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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.19 by dl, Sun Jan 25 13:25:28 2004 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());
85		assertTrue(rl.isWriteLockedByCurrentThread());
86	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
87		assertEquals(0, rl.getReadLockCount());
88		rl.writeLock().unlock();
89		assertFalse(rl.isWriteLocked());
90		assertFalse(rl.isWriteLockedByCurrentThread());
91	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
92		assertEquals(0, rl.getReadLockCount());
93		rl.readLock().lock();
94		assertFalse(rl.isWriteLocked());
#	Line 103 | 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());
111		assertTrue(rl.isWriteLockedByCurrentThread());
112	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
113		assertEquals(0, rl.getReadLockCount());
114		rl.writeLock().unlock();
115		assertFalse(rl.isWriteLocked());
116		assertFalse(rl.isWriteLockedByCurrentThread());
117	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
118		assertEquals(0, rl.getReadLockCount());
119		rl.readLock().lock();
120		assertFalse(rl.isWriteLocked());
#	Line 126 | Line 129 | public class ReentrantReadWriteLockTest
129		/**
130		* getWriteHoldCount returns number of recursive holds
131		*/
132	<	public void testGetHoldCount() {
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		}
142		}
143	<
143	>
144	>	/**
145	>	* WriteLock.getHoldCount returns number of recursive holds
146	>	*/
147	>	public void testGetHoldCount() {
148	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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--) {
154	>	lock.writeLock().unlock();
155	>	assertEquals(i-1,lock.writeLock().getHoldCount());
156	>	}
157	>	}
158	>
159	>	/**
160	>	* getReadHoldCount returns number of recursive holds
161	>	*/
162	>	public void testGetReadHoldCount() {
163	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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--) {
169	>	lock.readLock().unlock();
170	>	assertEquals(i-1,lock.getReadHoldCount());
171	>	}
172	>	}
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	<	t.interrupt();
206	<	lock.writeLock().unlock();
207	<	t.join();
175	<	} catch(Exception e){
176	<	unexpectedException();
177	<	}
178	<	}
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();
195	<	t.interrupt();
196	<	lock.writeLock().unlock();
197	<	t.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
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	<	t.interrupt();
242	<	lock.writeLock().unlock();
243	<	t.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
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	<	});
240	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	t.join();
244	<	} catch(Exception e){
245	<	unexpectedException();
246	<	}
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 258 | 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){
266	<	unexpectedException();
267	<	}
268	<	}
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 278 | 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){
286	<	unexpectedException();
287	<	}
288	<	}
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 299 | 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){
307	<	unexpectedException();
308	<	}
309	<	}
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 327 | 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());
339	<
340	<	} catch(Exception e){
341	<	unexpectedException();
342	<	}
343	<	}
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 361 | 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());
371	<
372	<	} catch(Exception e){
373	<	unexpectedException();
374	<	}
375	<	}
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() {
376	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
377	>	lock.writeLock().lock();
378	>	assertTrue(lock.readLock().tryLock());
379	>	lock.readLock().unlock();
380	>	lock.writeLock().unlock();
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() throws InterruptedException {
388	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
389	>	lock.writeLock().lock();
390	>	Thread t1 = new Thread(new Runnable() {
391	>	public void run() {
392	>	lock.readLock().lock();
393	>	lock.readLock().unlock();
394	>	}
395	>	});
396	>	Thread t2 = new Thread(new Runnable() {
397	>	public void run() {
398	>	lock.readLock().lock();
399	>	lock.readLock().unlock();
400	>	}
401	>	});
402	>
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() throws InterruptedException {
422	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
423	>	lock.writeLock().lock();
424	>	Thread t1 = new Thread(new Runnable() {
425	>	public void run() {
426	>	lock.writeLock().lock();
427	>	lock.writeLock().unlock();
428	>	}
429	>	});
430	>	Thread t2 = new Thread(new Runnable() {
431	>	public void run() {
432	>	lock.writeLock().lock();
433	>	lock.writeLock().unlock();
434	>	}
435	>	});
436	>
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() throws InterruptedException {
457	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
458	>	lock.writeLock().lock();
459	>	Thread t1 = new Thread(new Runnable() {
460	>	public void run() {
461	>	lock.writeLock().lock();
462	>	lock.writeLock().unlock();
463	>	}
464	>	});
465	>	Thread t2 = new Thread(new Runnable() {
466	>	public void run() {
467	>	lock.writeLock().lock();
468	>	lock.writeLock().unlock();
469	>	}
470	>	});
471	>
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() {
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	>	}
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() throws InterruptedException {
503	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504	>	lock.writeLock().lock();
505	>	Thread t1 = new Thread(new Runnable() {
506	>	public void run() {
507	>	lock.readLock().lock();
508	>	lock.readLock().unlock();
509	>	}
510	>	});
511	>	Thread t2 = new Thread(new Runnable() {
512	>	public void run() {
513	>	lock.readLock().lock();
514	>	lock.readLock().unlock();
515	>	}
516	>	});
517	>
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() throws InterruptedException {
538	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
539	>	lock.writeLock().lock();
540	>	Thread t1 = new Thread(new Runnable() {
541	>	public void run() {
542	>	lock.writeLock().lock();
543	>	lock.writeLock().unlock();
544	>	}
545	>	});
546	>	Thread t2 = new Thread(new Runnable() {
547	>	public void run() {
548	>	lock.writeLock().lock();
549	>	lock.writeLock().unlock();
550	>	}
551	>	});
552	>
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() throws InterruptedException {
573	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
574	>	lock.writeLock().lock();
575	>	Thread t1 = new Thread(new Runnable() {
576	>	public void run() {
577	>	lock.writeLock().lock();
578	>	lock.writeLock().unlock();
579	>	}
580	>	});
581	>	Thread t2 = new Thread(new Runnable() {
582	>	public void run() {
583	>	lock.writeLock().lock();
584	>	lock.writeLock().unlock();
585	>	}
586	>	});
587	>
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 389 | Line 615 | public class ReentrantReadWriteLockTest
615		lock.readLock().unlock();
616		}
617		});
392	–	try {
393	–	t.start();
394	–	t.join();
395	–	lock.readLock().unlock();
396	–	} catch(Exception e){
397	–	unexpectedException();
398	–	}
399	–	}
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 411 | Line 634 | public class ReentrantReadWriteLockTest
634		threadAssertFalse(lock.writeLock().tryLock());
635		}
636		});
414	–	try {
415	–	t.start();
416	–	t.join();
417	–	lock.readLock().unlock();
418	–	} catch(Exception e){
419	–	unexpectedException();
420	–	}
421	–	}
637
638	<
638	>	t.start();
639	>	t.join();
640	>	lock.readLock().unlock();
641	>	}
642	>
643
644		/**
645	<	* write timed tryLock times out if locked
645	>	* Fair Read tryLock succeeds if readlocked but not writelocked
646		*/
647	<	public void testWriteTryLock_Timeout() {
648	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
649	<	lock.writeLock().lock();
647	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
648	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
649	>	lock.readLock().lock();
650		Thread t = new Thread(new Runnable() {
651		public void run() {
652	<	try {
653	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
435	<	} catch (Exception ex) {
436	<	threadUnexpectedException();
437	<	}
652	>	threadAssertTrue(lock.readLock().tryLock());
653	>	lock.readLock().unlock();
654		}
655		});
656	<	try {
657	<	t.start();
658	<	t.join();
659	<	lock.writeLock().unlock();
660	<	} catch(Exception e){
661	<	unexpectedException();
662	<	}
447	<	}
656	>
657	>	t.start();
658	>	t.join();
659	>	lock.readLock().unlock();
660	>	}
661	>
662	>
663
664		/**
665	<	* read timed tryLock times out if write-locked
665	>	* Fair write tryLock fails when readlocked
666		*/
667	<	public void testReadTryLock_Timeout() {
668	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
669	<	lock.writeLock().lock();
667	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
668	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
669	>	lock.readLock().lock();
670		Thread t = new Thread(new Runnable() {
671		public void run() {
672	<	try {
458	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
459	<	} catch (Exception ex) {
460	<	threadUnexpectedException();
461	<	}
672	>	threadAssertFalse(lock.writeLock().tryLock());
673		}
674		});
675	<	try {
676	<	t.start();
677	<	t.join();
678	<	lock.writeLock().unlock();
679	<	} catch(Exception e){
680	<	unexpectedException();
681	<	}
682	<	}
675	>
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() throws InterruptedException {
687	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
688	>	lock.writeLock().lock();
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() throws InterruptedException {
703	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
704	>	lock.writeLock().lock();
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) {
491	<	}
492	<	}
493	<	});
494	<	try {
495	<	t.start();
496	<	t.interrupt();
497	<	t.join();
498	<	lock.writeLock().unlock();
499	<	} catch(Exception e){
500	<	unexpectedException();
501	<	}
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	<	}
520	<	catch(InterruptedException success) {
521	<	}
522	<	}
523	<	});
524	<	try {
525	<	t.start();
526	<	t.interrupt();
527	<	t.join();
528	<	lock.writeLock().unlock();
529	<	} catch(Exception e){
530	<	unexpectedException();
531	<	}
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	<	}
544	<	catch (IllegalMonitorStateException success) {
545	<	}
546	<	catch (Exception ex) {
547	<	shouldThrow();
548	<	}
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	<	}
561	<	catch (IllegalMonitorStateException success) {
562	<	}
563	<	catch (Exception ex) {
564	<	unexpectedException();
565	<	}
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();
579	<	}
580	<	catch (Exception ex) {
581	<	unexpectedException();
582	<	}
783	>
784	>	lock.writeLock().lock();
785	>	long t = c.awaitNanos(100);
786	>	assertTrue(t <= 0);
787	>	lock.writeLock().unlock();
788		}
789
790
#	Line 587 | 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();
594	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
595	<	lock.writeLock().unlock();
596	<	}
597	<	catch (Exception ex) {
598	<	unexpectedException();
599	<	}
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();
611	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
612	<	lock.writeLock().unlock();
613	<	}
614	<	catch (Exception ex) {
615	<	unexpectedException();
616	<	}
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();
824	<	}
825	<	catch(InterruptedException e) {
826	<	threadUnexpectedException();
827	<	}
828	<	}
829	<	});
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	>	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	>
839	>	public volatile boolean canAwake = false;
840	>	public volatile boolean interrupted = false;
841	>	public volatile boolean lockStarted = false;
842	>
843	>	public UninterruptableThread(Lock lock, Condition c) {
844	>	this.lock = lock;
845	>	this.c = c;
846	>	}
847	>
848	>	public synchronized void run() {
849	>	lock.lock();
850	>	lockStarted = true;
851	>
852	>	while (!canAwake) {
853	>	c.awaitUninterruptibly();
854	>	}
855
856	<	try {
857	<	t.start();
640	<	Thread.sleep(SHORT_DELAY_MS);
641	<	lock.writeLock().lock();
642	<	c.signal();
643	<	lock.writeLock().unlock();
644	<	t.join(SHORT_DELAY_MS);
645	<	assertFalse(t.isAlive());
646	<	}
647	<	catch (Exception ex) {
648	<	unexpectedException();
856	>	interrupted = isInterrupted();
857	>	lock.unlock();
858		}
859		}
860
861		/**
862		* awaitUninterruptibly doesn't abort on interrupt
863		*/
864	<	public void testAwaitUninterruptibly() {
865	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
864	>	public void testAwaitUninterruptibly() throws InterruptedException {
865	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
866		final Condition c = lock.writeLock().newCondition();
867	<	Thread t = new Thread(new Runnable() {
868	<	public void run() {
869	<	lock.writeLock().lock();
870	<	c.awaitUninterruptibly();
871	<	lock.writeLock().unlock();
872	<	}
873	<	});
867	>	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
868	>
869	>	thread.start();
870	>
871	>	while (!thread.lockStarted) {
872	>	Thread.sleep(100);
873	>	}
874
875	+	lock.writeLock().lock();
876		try {
877	<	t.start();
878	<	Thread.sleep(SHORT_DELAY_MS);
669	<	t.interrupt();
670	<	lock.writeLock().lock();
877	>	thread.interrupt();
878	>	thread.canAwake = true;
879		c.signal();
880	+	} finally {
881		lock.writeLock().unlock();
673	–	assert(t.isInterrupted());
674	–	t.join(SHORT_DELAY_MS);
675	–	assertFalse(t.isAlive());
676	–	}
677	–	catch (Exception ex) {
678	–	unexpectedException();
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();
901	<	threadShouldThrow();
902	<	}
903	<	catch(InterruptedException success) {
904	<	}
905	<	}
906	<	});
700	<
701	<	try {
702	<	t.start();
703	<	Thread.sleep(SHORT_DELAY_MS);
704	<	t.interrupt();
705	<	t.join(SHORT_DELAY_MS);
706	<	assertFalse(t.isAlive());
707	<	}
708	<	catch (Exception ex) {
709	<	unexpectedException();
710	<	}
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	>	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();
921	<	threadShouldThrow();
922	<	}
923	<	catch(InterruptedException success) {
924	<	}
925	<	}
926	<	});
731	<
732	<	try {
733	<	t.start();
734	<	Thread.sleep(SHORT_DELAY_MS);
735	<	t.interrupt();
736	<	t.join(SHORT_DELAY_MS);
737	<	assertFalse(t.isAlive());
738	<	}
739	<	catch (Exception ex) {
740	<	unexpectedException();
741	<	}
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	>	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();
942	<	threadShouldThrow();
943	<	}
944	<	catch(InterruptedException success) {
945	<	}
946	<	}
947	<	});
763	<
764	<	try {
765	<	t.start();
766	<	Thread.sleep(SHORT_DELAY_MS);
767	<	t.interrupt();
768	<	t.join(SHORT_DELAY_MS);
769	<	assertFalse(t.isAlive());
770	<	}
771	<	catch (Exception ex) {
772	<	unexpectedException();
773	<	}
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	>	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();
962	<	}
963	<	catch(InterruptedException e) {
964	<	threadUnexpectedException();
965	<	}
966	<	}
967	<	});
968	<
969	<	Thread t2 = new Thread(new Runnable() {
970	<	public void run() {
971	<	try {
972	<	lock.writeLock().lock();
973	<	c.await();
974	<	lock.writeLock().unlock();
975	<	}
976	<	catch(InterruptedException e) {
977	<	threadUnexpectedException();
978	<	}
979	<	}
806	<	});
807	<
808	<	try {
809	<	t1.start();
810	<	t2.start();
811	<	Thread.sleep(SHORT_DELAY_MS);
812	<	lock.writeLock().lock();
813	<	c.signalAll();
814	<	lock.writeLock().unlock();
815	<	t1.join(SHORT_DELAY_MS);
816	<	t2.join(SHORT_DELAY_MS);
817	<	assertFalse(t1.isAlive());
818	<	assertFalse(t2.isAlive());
819	<	}
820	<	catch (Exception ex) {
821	<	unexpectedException();
822	<	}
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 CheckedRunnable() {
964	>	public void realRun() throws InterruptedException {
965	>	lock.writeLock().lock();
966	>	c.await();
967	>	lock.writeLock().unlock();
968	>	}});
969	>
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();
843	<	r.readLock().unlock();
844	<	} catch(Exception e){
845	<	e.printStackTrace();
846	<	unexpectedException();
847	<	}
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();
874	<	} catch(Exception e){
875	<	unexpectedException();
876	<	}
877	<	}
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) {
888	<	}
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();
920	<	} catch(Exception e){
921	<	unexpectedException();
922	<	}
923	<	}
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();
950	<	} catch(Exception e){
951	<	unexpectedException();
952	<	}
953	<	}
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();
982	<	} catch(Exception e){
983	<	unexpectedException();
984	<	}
985	<	}
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 992 | Line 1127 | public class ReentrantReadWriteLockTest
1127		try {
1128		lock.hasWaiters(null);
1129		shouldThrow();
1130	<	} catch (NullPointerException success) {
996	<	} catch (Exception ex) {
997	<	unexpectedException();
998	<	}
1130	>	} catch (NullPointerException success) {}
1131		}
1132
1133		/**
#	Line 1006 | Line 1138 | public class ReentrantReadWriteLockTest
1138		try {
1139		lock.getWaitQueueLength(null);
1140		shouldThrow();
1141	<	} catch (NullPointerException success) {
1010	<	} catch (Exception ex) {
1011	<	unexpectedException();
1012	<	}
1141	>	} catch (NullPointerException success) {}
1142		}
1143
1144
#	Line 1021 | Line 1150 | public class ReentrantReadWriteLockTest
1150		try {
1151		lock.getWaitingThreads(null);
1152		shouldThrow();
1153	<	} catch (NullPointerException success) {
1025	<	} catch (Exception ex) {
1026	<	unexpectedException();
1027	<	}
1153	>	} catch (NullPointerException success) {}
1154		}
1155
1156		/**
#	Line 1032 | 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) {
1041	<	} catch (Exception ex) {
1042	<	unexpectedException();
1043	<	}
1166	>	} catch (IllegalArgumentException success) {}
1167		}
1168
1169		/**
#	Line 1048 | 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) {
1056	<	} catch (Exception ex) {
1057	<	unexpectedException();
1058	<	}
1178	>	} catch (IllegalMonitorStateException success) {}
1179		}
1180
1181
#	Line 1064 | 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) {
1073	<	} catch (Exception ex) {
1074	<	unexpectedException();
1075	<	}
1192	>	} catch (IllegalArgumentException success) {}
1193		}
1194
1195		/**
#	Line 1080 | 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) {
1088	<	} catch (Exception ex) {
1089	<	unexpectedException();
1090	<	}
1204	>	} catch (IllegalMonitorStateException success) {}
1205		}
1206
1207
#	Line 1095 | 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) {
1105	<	} catch (Exception ex) {
1106	<	unexpectedException();
1107	<	}
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) {
1120	<	} catch (Exception ex) {
1121	<	unexpectedException();
1122	<	}
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();
1248	<	}
1249	<	catch(InterruptedException e) {
1250	<	threadUnexpectedException();
1251	<	}
1252	<	}
1253	<	});
1254	<
1255	<	try {
1256	<	t.start();
1257	<	Thread.sleep(SHORT_DELAY_MS);
1258	<	lock.writeLock().lock();
1259	<	assertTrue(lock.hasWaiters(c));
1260	<	assertEquals(1, lock.getWaitQueueLength(c));
1261	<	c.signal();
1262	<	lock.writeLock().unlock();
1155	<	Thread.sleep(SHORT_DELAY_MS);
1156	<	lock.writeLock().lock();
1157	<	assertFalse(lock.hasWaiters(c));
1158	<	assertEquals(0, lock.getWaitQueueLength(c));
1159	<	lock.writeLock().unlock();
1160	<	t.join(SHORT_DELAY_MS);
1161	<	assertFalse(t.isAlive());
1162	<	}
1163	<	catch (Exception ex) {
1164	<	unexpectedException();
1165	<	}
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	>	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();
1279	<	}
1280	<	catch(InterruptedException e) {
1281	<	threadUnexpectedException();
1282	<	}
1283	<	}
1284	<	});
1285	<
1286	<	try {
1287	<	t.start();
1288	<	Thread.sleep(SHORT_DELAY_MS);
1289	<	lock.writeLock().lock();
1290	<	assertTrue(lock.hasWaiters(c));
1291	<	assertEquals(1, lock.getWaitQueueLength(c));
1292	<	c.signal();
1293	<	lock.writeLock().unlock();
1197	<	Thread.sleep(SHORT_DELAY_MS);
1198	<	lock.writeLock().lock();
1199	<	assertFalse(lock.hasWaiters(c));
1200	<	assertEquals(0, lock.getWaitQueueLength(c));
1201	<	lock.writeLock().unlock();
1202	<	t.join(SHORT_DELAY_MS);
1203	<	assertFalse(t.isAlive());
1204	<	}
1205	<	catch (Exception ex) {
1206	<	unexpectedException();
1207	<	}
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	>	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();
1310	<	}
1311	<	catch(InterruptedException e) {
1312	<	threadUnexpectedException();
1313	<	}
1314	<	}
1315	<	});
1316	<
1317	<	Thread t2 = new Thread(new Runnable() {
1318	<	public void run() {
1319	<	try {
1320	<	lock.writeLock().lock();
1321	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1322	<	c.await();
1323	<	lock.writeLock().unlock();
1324	<	}
1325	<	catch(InterruptedException e) {
1326	<	threadUnexpectedException();
1327	<	}
1328	<	}
1329	<	});
1330	<
1331	<	try {
1332	<	lock.writeLock().lock();
1333	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1334	<	lock.writeLock().unlock();
1335	<	t1.start();
1336	<	Thread.sleep(SHORT_DELAY_MS);
1337	<	t2.start();
1338	<	Thread.sleep(SHORT_DELAY_MS);
1339	<	lock.writeLock().lock();
1340	<	assertTrue(lock.hasWaiters(c));
1255	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1256	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1257	<	c.signalAll();
1258	<	lock.writeLock().unlock();
1259	<	Thread.sleep(SHORT_DELAY_MS);
1260	<	lock.writeLock().lock();
1261	<	assertFalse(lock.hasWaiters(c));
1262	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1263	<	lock.writeLock().unlock();
1264	<	t1.join(SHORT_DELAY_MS);
1265	<	t2.join(SHORT_DELAY_MS);
1266	<	assertFalse(t1.isAlive());
1267	<	assertFalse(t2.isAlive());
1268	<	}
1269	<	catch (Exception ex) {
1270	<	unexpectedException();
1271	<	}
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 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	>	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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