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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.21 by dl, Thu Jan 20 00:39:13 2005 UTC vs.
Revision 1.36 by jsr166, Sat Nov 21 02:33:20 2009 UTC

#	Line 2 | Line 2
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4		* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.io.*;
14		import java.util.*;
15
16		public class ReentrantReadWriteLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run (suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantReadWriteLockTest.class);
21	>	return new TestSuite(ReentrantReadWriteLockTest.class);
22		}
23
24		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantReadWriteLock lock;
29		InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
30	<	public void run() {
31	<	try {
31	<	lock.writeLock().lockInterruptibly();
32	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.writeLock().lockInterruptibly();
32		}
33		}
34
#	Line 38 | Line 37 | public class ReentrantReadWriteLockTest
37		* A runnable calling lockInterruptibly that expects to be
38		* interrupted
39		*/
40	<	class InterruptedLockRunnable implements Runnable {
40	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
41		final ReentrantReadWriteLock lock;
42		InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; }
43	<	public void run() {
44	<	try {
46	<	lock.writeLock().lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
43	>	public void realRun() throws InterruptedException {
44	>	lock.writeLock().lockInterruptibly();
45		}
46		}
47
#	Line 54 | Line 50 | public class ReentrantReadWriteLockTest
50		*/
51		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
52		PublicReentrantReadWriteLock() { super(); }
53	<	public Collection<Thread> getQueuedThreads() {
54	<	return super.getQueuedThreads();
53	>	public Collection<Thread> getQueuedThreads() {
54	>	return super.getQueuedThreads();
55		}
56	<	public Collection<Thread> getWaitingThreads(Condition c) {
57	<	return super.getWaitingThreads(c);
56	>	public Collection<Thread> getWaitingThreads(Condition c) {
57	>	return super.getWaitingThreads(c);
58		}
59		}
60
61		/**
62		* Constructor sets given fairness, and is in unlocked state
63		*/
64	<	public void testConstructor() {
65	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
64	>	public void testConstructor() {
65	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
66		assertFalse(rl.isFair());
67		assertFalse(rl.isWriteLocked());
68		assertEquals(0, rl.getReadLockCount());
69	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
69	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
70		assertTrue(r2.isFair());
71		assertFalse(r2.isWriteLocked());
72		assertEquals(0, r2.getReadLockCount());
73	+	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
74	+	assertFalse(r3.isFair());
75	+	assertFalse(r3.isWriteLocked());
76	+	assertEquals(0, r3.getReadLockCount());
77		}
78
79		/**
80		* write-locking and read-locking an unlocked lock succeed
81		*/
82	<	public void testLock() {
83	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
82	>	public void testLock() {
83	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
84		rl.writeLock().lock();
85		assertTrue(rl.isWriteLocked());
86		assertTrue(rl.isWriteLockedByCurrentThread());
87	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
88		assertEquals(0, rl.getReadLockCount());
89		rl.writeLock().unlock();
90		assertFalse(rl.isWriteLocked());
91		assertFalse(rl.isWriteLockedByCurrentThread());
92	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
93		assertEquals(0, rl.getReadLockCount());
94		rl.readLock().lock();
95		assertFalse(rl.isWriteLocked());
#	Line 103 | Line 105 | public class ReentrantReadWriteLockTest
105		/**
106		* locking an unlocked fair lock succeeds
107		*/
108	<	public void testFairLock() {
109	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
108	>	public void testFairLock() {
109	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
110		rl.writeLock().lock();
111		assertTrue(rl.isWriteLocked());
112		assertTrue(rl.isWriteLockedByCurrentThread());
113	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
114		assertEquals(0, rl.getReadLockCount());
115		rl.writeLock().unlock();
116		assertFalse(rl.isWriteLocked());
117		assertFalse(rl.isWriteLockedByCurrentThread());
118	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
119		assertEquals(0, rl.getReadLockCount());
120		rl.readLock().lock();
121		assertFalse(rl.isWriteLocked());
#	Line 126 | Line 130 | public class ReentrantReadWriteLockTest
130		/**
131		* getWriteHoldCount returns number of recursive holds
132		*/
133	+	public void testGetWriteHoldCount() {
134	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
135	+	for (int i = 1; i <= SIZE; i++) {
136	+	lock.writeLock().lock();
137	+	assertEquals(i,lock.getWriteHoldCount());
138	+	}
139	+	for (int i = SIZE; i > 0; i--) {
140	+	lock.writeLock().unlock();
141	+	assertEquals(i-1,lock.getWriteHoldCount());
142	+	}
143	+	}
144	+
145	+	/**
146	+	* WriteLock.getHoldCount returns number of recursive holds
147	+	*/
148		public void testGetHoldCount() {
149	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
150	<	for(int i = 1; i <= SIZE; i++) {
151	<	lock.writeLock().lock();
152	<	assertEquals(i,lock.getWriteHoldCount());
153	<	}
154	<	for(int i = SIZE; i > 0; i--) {
155	<	lock.writeLock().unlock();
156	<	assertEquals(i-1,lock.getWriteHoldCount());
157	<	}
149	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
150	>	for (int i = 1; i <= SIZE; i++) {
151	>	lock.writeLock().lock();
152	>	assertEquals(i,lock.writeLock().getHoldCount());
153	>	}
154	>	for (int i = SIZE; i > 0; i--) {
155	>	lock.writeLock().unlock();
156	>	assertEquals(i-1,lock.writeLock().getHoldCount());
157	>	}
158		}
159	<
159	>
160	>	/**
161	>	* getReadHoldCount returns number of recursive holds
162	>	*/
163	>	public void testGetReadHoldCount() {
164	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
165	>	for (int i = 1; i <= SIZE; i++) {
166	>	lock.readLock().lock();
167	>	assertEquals(i,lock.getReadHoldCount());
168	>	}
169	>	for (int i = SIZE; i > 0; i--) {
170	>	lock.readLock().unlock();
171	>	assertEquals(i-1,lock.getReadHoldCount());
172	>	}
173	>	}
174	>
175
176		/**
177		* write-unlocking an unlocked lock throws IllegalMonitorStateException
178		*/
179	<	public void testUnlock_IllegalMonitorStateException() {
180	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
181	<	try {
182	<	rl.writeLock().unlock();
183	<	shouldThrow();
184	<	} catch(IllegalMonitorStateException success){}
179	>	public void testUnlock_IllegalMonitorStateException() {
180	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
181	>	try {
182	>	rl.writeLock().unlock();
183	>	shouldThrow();
184	>	} catch (IllegalMonitorStateException success) {}
185		}
186
187
188		/**
189		* write-lockInterruptibly is interruptible
190		*/
191	<	public void testWriteLockInterruptibly_Interrupted() {
192	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
193	<	Thread t = new Thread(new Runnable() {
194	<	public void run() {
195	<	try {
196	<	lock.writeLock().lockInterruptibly();
197	<	lock.writeLock().unlock();
198	<	lock.writeLock().lockInterruptibly();
199	<	lock.writeLock().unlock();
200	<	} catch(InterruptedException success){}
201	<	}
202	<	});
203	<	try {
204	<	lock.writeLock().lock();
205	<	t.start();
206	<	t.interrupt();
207	<	lock.writeLock().unlock();
208	<	t.join();
175	<	} catch(Exception e){
176	<	unexpectedException();
177	<	}
178	<	}
191	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
192	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
193	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
194	>	public void realRun() throws InterruptedException {
195	>	lock.writeLock().lockInterruptibly();
196	>	lock.writeLock().unlock();
197	>	lock.writeLock().lockInterruptibly();
198	>	lock.writeLock().unlock();
199	>	}});
200	>
201	>	lock.writeLock().lock();
202	>	t.start();
203	>	Thread.sleep(SHORT_DELAY_MS);
204	>	t.interrupt();
205	>	Thread.sleep(SHORT_DELAY_MS);
206	>	lock.writeLock().unlock();
207	>	t.join();
208	>	}
209
210		/**
211		* timed write-tryLock is interruptible
212		*/
213	<	public void testWriteTryLock_Interrupted() {
214	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
215	<	lock.writeLock().lock();
216	<	Thread t = new Thread(new Runnable() {
217	<	public void run() {
218	<	try {
219	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
220	<	} catch(InterruptedException success){}
221	<	}
222	<	});
223	<	try {
224	<	t.start();
195	<	t.interrupt();
196	<	lock.writeLock().unlock();
197	<	t.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
213	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
214	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
215	>	lock.writeLock().lock();
216	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
217	>	public void realRun() throws InterruptedException {
218	>	lock.writeLock().tryLock(1000,MILLISECONDS);
219	>	}});
220	>
221	>	t.start();
222	>	t.interrupt();
223	>	lock.writeLock().unlock();
224	>	t.join();
225		}
226
227		/**
228		* read-lockInterruptibly is interruptible
229		*/
230	<	public void testReadLockInterruptibly_Interrupted() {
231	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
232	<	lock.writeLock().lock();
233	<	Thread t = new Thread(new Runnable() {
234	<	public void run() {
235	<	try {
236	<	lock.readLock().lockInterruptibly();
237	<	} catch(InterruptedException success){}
238	<	}
239	<	});
240	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	lock.writeLock().unlock();
244	<	t.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
230	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
231	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
232	>	lock.writeLock().lock();
233	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
234	>	public void realRun() throws InterruptedException {
235	>	lock.readLock().lockInterruptibly();
236	>	}});
237	>
238	>	t.start();
239	>	Thread.sleep(SHORT_DELAY_MS);
240	>	t.interrupt();
241	>	Thread.sleep(SHORT_DELAY_MS);
242	>	lock.writeLock().unlock();
243	>	t.join();
244	>	}
245
246		/**
247		* timed read-tryLock is interruptible
248		*/
249	<	public void testReadTryLock_Interrupted() {
250	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
251	<	lock.writeLock().lock();
252	<	Thread t = new Thread(new Runnable() {
253	<	public void run() {
254	<	try {
255	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
256	<	threadShouldThrow();
257	<	} catch(InterruptedException success){}
258	<	}
259	<	});
240	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	t.join();
244	<	} catch(Exception e){
245	<	unexpectedException();
246	<	}
249	>	public void testReadTryLock_Interrupted() throws InterruptedException {
250	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
251	>	lock.writeLock().lock();
252	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
253	>	public void realRun() throws InterruptedException {
254	>	lock.readLock().tryLock(1000,MILLISECONDS);
255	>	}});
256	>
257	>	t.start();
258	>	t.interrupt();
259	>	t.join();
260		}
261
262	<
262	>
263		/**
264		* write-tryLock fails if locked
265		*/
266	<	public void testWriteTryLockWhenLocked() {
267	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
268	<	lock.writeLock().lock();
269	<	Thread t = new Thread(new Runnable() {
266	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
267	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
268	>	lock.writeLock().lock();
269	>	Thread t = new Thread(new Runnable() {
270		public void run() {
271		threadAssertFalse(lock.writeLock().tryLock());
272	<	}
273	<	});
274	<	try {
275	<	t.start();
276	<	t.join();
277	<	lock.writeLock().unlock();
278	<	} catch(Exception e){
266	<	unexpectedException();
267	<	}
268	<	}
272	>	}
273	>	});
274	>
275	>	t.start();
276	>	t.join();
277	>	lock.writeLock().unlock();
278	>	}
279
280		/**
281		* read-tryLock fails if locked
282		*/
283	<	public void testReadTryLockWhenLocked() {
284	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
285	<	lock.writeLock().lock();
286	<	Thread t = new Thread(new Runnable() {
283	>	public void testReadTryLockWhenLocked() throws InterruptedException {
284	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
285	>	lock.writeLock().lock();
286	>	Thread t = new Thread(new Runnable() {
287		public void run() {
288		threadAssertFalse(lock.readLock().tryLock());
289	<	}
290	<	});
291	<	try {
292	<	t.start();
293	<	t.join();
294	<	lock.writeLock().unlock();
295	<	} catch(Exception e){
286	<	unexpectedException();
287	<	}
288	<	}
289	>	}
290	>	});
291	>
292	>	t.start();
293	>	t.join();
294	>	lock.writeLock().unlock();
295	>	}
296
297		/**
298		* Multiple threads can hold a read lock when not write-locked
299		*/
300	<	public void testMultipleReadLocks() {
301	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	<	lock.readLock().lock();
303	<	Thread t = new Thread(new Runnable() {
300	>	public void testMultipleReadLocks() throws InterruptedException {
301	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	>	lock.readLock().lock();
303	>	Thread t = new Thread(new Runnable() {
304		public void run() {
305		threadAssertTrue(lock.readLock().tryLock());
306		lock.readLock().unlock();
307	<	}
308	<	});
309	<	try {
310	<	t.start();
311	<	t.join();
312	<	lock.readLock().unlock();
313	<	} catch(Exception e){
307	<	unexpectedException();
308	<	}
309	<	}
307	>	}
308	>	});
309	>
310	>	t.start();
311	>	t.join();
312	>	lock.readLock().unlock();
313	>	}
314
315		/**
316		* A writelock succeeds after reading threads unlock
317		*/
318	<	public void testWriteAfterMultipleReadLocks() {
319	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
320	<	lock.readLock().lock();
321	<	Thread t1 = new Thread(new Runnable() {
318	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
319	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
320	>	lock.readLock().lock();
321	>	Thread t1 = new Thread(new Runnable() {
322		public void run() {
323		lock.readLock().lock();
324		lock.readLock().unlock();
325	<	}
326	<	});
327	<	Thread t2 = new Thread(new Runnable() {
325	>	}
326	>	});
327	>	Thread t2 = new Thread(new Runnable() {
328		public void run() {
329		lock.writeLock().lock();
330		lock.writeLock().unlock();
331	<	}
332	<	});
331	>	}
332	>	});
333
334	<	try {
335	<	t1.start();
336	<	t2.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
338	<	lock.readLock().unlock();
339	<	t1.join(MEDIUM_DELAY_MS);
340	<	t2.join(MEDIUM_DELAY_MS);
341	<	assertTrue(!t1.isAlive());
342	<	assertTrue(!t2.isAlive());
339	<
340	<	} catch(Exception e){
341	<	unexpectedException();
342	<	}
343	<	}
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());
342	>	}
343
344		/**
345		* Readlocks succeed after a writing thread unlocks
346		*/
347	<	public void testReadAfterWriteLock() {
348	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
349	<	lock.writeLock().lock();
350	<	Thread t1 = new Thread(new Runnable() {
347	>	public void testReadAfterWriteLock() throws InterruptedException {
348	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
349	>	lock.writeLock().lock();
350	>	Thread t1 = new Thread(new Runnable() {
351		public void run() {
352		lock.readLock().lock();
353		lock.readLock().unlock();
354	<	}
355	<	});
356	<	Thread t2 = new Thread(new Runnable() {
354	>	}
355	>	});
356	>	Thread t2 = new Thread(new Runnable() {
357		public void run() {
358		lock.readLock().lock();
359		lock.readLock().unlock();
360	<	}
361	<	});
360	>	}
361	>	});
362
363	<	try {
364	<	t1.start();
365	<	t2.start();
366	<	Thread.sleep(SHORT_DELAY_MS);
367	<	lock.writeLock().unlock();
368	<	t1.join(MEDIUM_DELAY_MS);
369	<	t2.join(MEDIUM_DELAY_MS);
370	<	assertTrue(!t1.isAlive());
371	<	assertTrue(!t2.isAlive());
373	<
374	<	} catch(Exception e){
375	<	unexpectedException();
376	<	}
377	<	}
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
373		/**
374		* Read trylock succeeds if write locked by current thread
375		*/
376	<	public void testReadHoldingWriteLock() {
377	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	<	lock.writeLock().lock();
376	>	public void testReadHoldingWriteLock() {
377	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	>	lock.writeLock().lock();
379		assertTrue(lock.readLock().tryLock());
380		lock.readLock().unlock();
381		lock.writeLock().unlock();
382	<	}
382	>	}
383
384		/**
385		* Read lock succeeds if write locked by current thread even if
386	<	* other threads are waiting
386	>	* other threads are waiting for readlock
387		*/
388	<	public void testReadHoldingWriteLock2() {
389	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
390	<	lock.writeLock().lock();
391	<	Thread t1 = new Thread(new Runnable() {
388	>	public void testReadHoldingWriteLock2() throws InterruptedException {
389	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
390	>	lock.writeLock().lock();
391	>	Thread t1 = new Thread(new Runnable() {
392		public void run() {
393		lock.readLock().lock();
394		lock.readLock().unlock();
395	<	}
396	<	});
397	<	Thread t2 = new Thread(new Runnable() {
395	>	}
396	>	});
397	>	Thread t2 = new Thread(new Runnable() {
398		public void run() {
399		lock.readLock().lock();
400		lock.readLock().unlock();
401	<	}
402	<	});
401	>	}
402	>	});
403	>
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());
416	>	}
417	>
418	>	/**
419	>	*  Read lock succeeds if write locked by current thread even if
420	>	* other threads are waiting for writelock
421	>	*/
422	>	public void testReadHoldingWriteLock3() throws InterruptedException {
423	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
424	>	lock.writeLock().lock();
425	>	Thread t1 = new Thread(new Runnable() {
426	>	public void run() {
427	>	lock.writeLock().lock();
428	>	lock.writeLock().unlock();
429	>	}
430	>	});
431	>	Thread t2 = new Thread(new Runnable() {
432	>	public void run() {
433	>	lock.writeLock().lock();
434	>	lock.writeLock().unlock();
435	>	}
436	>	});
437	>
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());
450	>	}
451	>
452	>
453	>	/**
454	>	*  Write lock succeeds if write locked by current thread even if
455	>	* other threads are waiting for writelock
456	>	*/
457	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
458	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
459	>	lock.writeLock().lock();
460	>	Thread t1 = new Thread(new Runnable() {
461	>	public void run() {
462	>	lock.writeLock().lock();
463	>	lock.writeLock().unlock();
464	>	}
465	>	});
466	>	Thread t2 = new Thread(new Runnable() {
467	>	public void run() {
468	>	lock.writeLock().lock();
469	>	lock.writeLock().unlock();
470	>	}
471	>	});
472	>
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());
485	>	}
486
410	–	try {
411	–	t1.start();
412	–	t2.start();
413	–	lock.readLock().lock();
414	–	lock.readLock().unlock();
415	–	Thread.sleep(SHORT_DELAY_MS);
416	–	lock.readLock().lock();
417	–	lock.readLock().unlock();
418	–	lock.writeLock().unlock();
419	–	t1.join(MEDIUM_DELAY_MS);
420	–	t2.join(MEDIUM_DELAY_MS);
421	–	assertTrue(!t1.isAlive());
422	–	assertTrue(!t2.isAlive());
423	–
424	–	} catch(Exception e){
425	–	unexpectedException();
426	–	}
427	–	}
487
488		/**
489		* Fair Read trylock succeeds if write locked by current thread
490		*/
491	<	public void testReadHoldingWriteLockFair() {
492	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
493	<	lock.writeLock().lock();
491	>	public void testReadHoldingWriteLockFair() {
492	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
493	>	lock.writeLock().lock();
494		assertTrue(lock.readLock().tryLock());
495		lock.readLock().unlock();
496		lock.writeLock().unlock();
497	<	}
497	>	}
498
499		/**
500		* Fair Read lock succeeds if write locked by current thread even if
501	<	* other threads are waiting
501	>	* other threads are waiting for readlock
502		*/
503	<	public void testReadHoldingWriteLockFair2() {
504	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
505	<	lock.writeLock().lock();
506	<	Thread t1 = new Thread(new Runnable() {
503	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
504	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
505	>	lock.writeLock().lock();
506	>	Thread t1 = new Thread(new Runnable() {
507		public void run() {
508		lock.readLock().lock();
509		lock.readLock().unlock();
510	<	}
511	<	});
512	<	Thread t2 = new Thread(new Runnable() {
510	>	}
511	>	});
512	>	Thread t2 = new Thread(new Runnable() {
513		public void run() {
514		lock.readLock().lock();
515		lock.readLock().unlock();
516	<	}
517	<	});
516	>	}
517	>	});
518
519	<	try {
520	<	t1.start();
521	<	t2.start();
522	<	lock.readLock().lock();
523	<	lock.readLock().unlock();
524	<	Thread.sleep(SHORT_DELAY_MS);
525	<	lock.readLock().lock();
526	<	lock.readLock().unlock();
527	<	lock.writeLock().unlock();
528	<	t1.join(MEDIUM_DELAY_MS);
529	<	t2.join(MEDIUM_DELAY_MS);
530	<	assertTrue(!t1.isAlive());
531	<	assertTrue(!t2.isAlive());
532	<
533	<	} catch(Exception e){
534	<	unexpectedException();
535	<	}
536	<	}
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());
531	>	}
532	>
533	>
534	>	/**
535	>	* Fair Read lock succeeds if write locked by current thread even if
536	>	* other threads are waiting for writelock
537	>	*/
538	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
539	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
540	>	lock.writeLock().lock();
541	>	Thread t1 = new Thread(new Runnable() {
542	>	public void run() {
543	>	lock.writeLock().lock();
544	>	lock.writeLock().unlock();
545	>	}
546	>	});
547	>	Thread t2 = new Thread(new Runnable() {
548	>	public void run() {
549	>	lock.writeLock().lock();
550	>	lock.writeLock().unlock();
551	>	}
552	>	});
553	>
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());
566	>	}
567	>
568	>
569	>	/**
570	>	* Fair Write lock succeeds if write locked by current thread even if
571	>	* other threads are waiting for writelock
572	>	*/
573	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
574	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
575	>	lock.writeLock().lock();
576	>	Thread t1 = new Thread(new Runnable() {
577	>	public void run() {
578	>	lock.writeLock().lock();
579	>	lock.writeLock().unlock();
580	>	}
581	>	});
582	>	Thread t2 = new Thread(new Runnable() {
583	>	public void run() {
584	>	lock.writeLock().lock();
585	>	lock.writeLock().unlock();
586	>	}
587	>	});
588	>
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());
604	>	}
605
606
607		/**
608		* Read tryLock succeeds if readlocked but not writelocked
609		*/
610	<	public void testTryLockWhenReadLocked() {
611	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
612	<	lock.readLock().lock();
613	<	Thread t = new Thread(new Runnable() {
610	>	public void testTryLockWhenReadLocked() throws InterruptedException {
611	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
612	>	lock.readLock().lock();
613	>	Thread t = new Thread(new Runnable() {
614		public void run() {
615		threadAssertTrue(lock.readLock().tryLock());
616		lock.readLock().unlock();
617	<	}
618	<	});
619	<	try {
620	<	t.start();
621	<	t.join();
622	<	lock.readLock().unlock();
623	<	} catch(Exception e){
624	<	unexpectedException();
498	<	}
499	<	}
617	>	}
618	>	});
619	>
620	>	t.start();
621	>	t.join();
622	>	lock.readLock().unlock();
623	>	}
624	>
625
501	–
626
627		/**
628		* write tryLock fails when readlocked
629		*/
630	<	public void testWriteTryLockWhenReadLocked() {
631	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
632	<	lock.readLock().lock();
633	<	Thread t = new Thread(new Runnable() {
630	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
631	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
632	>	lock.readLock().lock();
633	>	Thread t = new Thread(new Runnable() {
634		public void run() {
635		threadAssertFalse(lock.writeLock().tryLock());
636	<	}
637	<	});
638	<	try {
639	<	t.start();
640	<	t.join();
641	<	lock.readLock().unlock();
642	<	} catch(Exception e){
643	<	unexpectedException();
644	<	}
645	<	}
636	>	}
637	>	});
638	>
639	>	t.start();
640	>	t.join();
641	>	lock.readLock().unlock();
642	>	}
643	>
644	>
645	>	/**
646	>	* Fair Read tryLock succeeds if readlocked but not writelocked
647	>	*/
648	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
649	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
650	>	lock.readLock().lock();
651	>	Thread t = new Thread(new Runnable() {
652	>	public void run() {
653	>	threadAssertTrue(lock.readLock().tryLock());
654	>	lock.readLock().unlock();
655	>	}
656	>	});
657	>
658	>	t.start();
659	>	t.join();
660	>	lock.readLock().unlock();
661	>	}
662	>
663	>
664	>
665	>	/**
666	>	* Fair write tryLock fails when readlocked
667	>	*/
668	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
669	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
670	>	lock.readLock().lock();
671	>	Thread t = new Thread(new Runnable() {
672	>	public void run() {
673	>	threadAssertFalse(lock.writeLock().tryLock());
674	>	}
675	>	});
676	>
677	>	t.start();
678	>	t.join();
679	>	lock.readLock().unlock();
680	>	}
681	>
682
523	–
683
684		/**
685		* write timed tryLock times out if locked
686		*/
687	<	public void testWriteTryLock_Timeout() {
688	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
689	<	lock.writeLock().lock();
690	<	Thread t = new Thread(new Runnable() {
691	<	public void run() {
692	<	try {
693	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
694	<	} catch (Exception ex) {
695	<	threadUnexpectedException();
696	<	}
697	<	}
698	<	});
699	<	try {
541	<	t.start();
542	<	t.join();
543	<	lock.writeLock().unlock();
544	<	} catch(Exception e){
545	<	unexpectedException();
546	<	}
547	<	}
687	>	public void testWriteTryLock_Timeout() throws InterruptedException {
688	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
689	>	lock.writeLock().lock();
690	>	Thread t = new Thread(new CheckedRunnable() {
691	>	public void realRun() throws InterruptedException {
692	>	threadAssertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
693	>	}});
694	>
695	>	t.start();
696	>	t.join();
697	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
698	>	lock.writeLock().unlock();
699	>	}
700
701		/**
702		* read timed tryLock times out if write-locked
703		*/
704	<	public void testReadTryLock_Timeout() {
705	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
706	<	lock.writeLock().lock();
707	<	Thread t = new Thread(new Runnable() {
708	<	public void run() {
709	<	try {
710	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
711	<	} catch (Exception ex) {
712	<	threadUnexpectedException();
713	<	}
714	<	}
715	<	});
716	<	try {
565	<	t.start();
566	<	t.join();
567	<	lock.writeLock().unlock();
568	<	} catch(Exception e){
569	<	unexpectedException();
570	<	}
571	<	}
704	>	public void testReadTryLock_Timeout() throws InterruptedException {
705	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
706	>	lock.writeLock().lock();
707	>	Thread t = new Thread(new CheckedRunnable() {
708	>	public void realRun() throws InterruptedException {
709	>	threadAssertFalse(lock.readLock().tryLock(1, MILLISECONDS));
710	>	}});
711	>
712	>	t.start();
713	>	t.join();
714	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
715	>	lock.writeLock().unlock();
716	>	}
717
718
719		/**
720		* write lockInterruptibly succeeds if lock free else is interruptible
721		*/
722	<	public void testWriteLockInterruptibly() {
723	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
724	<	try {
725	<	lock.writeLock().lockInterruptibly();
726	<	} catch(Exception e) {
727	<	unexpectedException();
728	<	}
729	<	Thread t = new Thread(new Runnable() {
730	<	public void run() {
731	<	try {
732	<	lock.writeLock().lockInterruptibly();
733	<	threadShouldThrow();
734	<	}
735	<	catch(InterruptedException success) {
591	<	}
592	<	}
593	<	});
594	<	try {
595	<	t.start();
596	<	t.interrupt();
597	<	t.join();
598	<	lock.writeLock().unlock();
599	<	} catch(Exception e){
600	<	unexpectedException();
601	<	}
722	>	public void testWriteLockInterruptibly() throws InterruptedException {
723	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
724	>	lock.writeLock().lockInterruptibly();
725	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
726	>	public void realRun() throws InterruptedException {
727	>	lock.writeLock().lockInterruptibly();
728	>	}});
729	>
730	>	t.start();
731	>	Thread.sleep(SHORT_DELAY_MS);
732	>	t.interrupt();
733	>	Thread.sleep(SHORT_DELAY_MS);
734	>	t.join();
735	>	lock.writeLock().unlock();
736		}
737
738		/**
739		*  read lockInterruptibly succeeds if lock free else is interruptible
740		*/
741	<	public void testReadLockInterruptibly() {
742	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
743	<	try {
744	<	lock.writeLock().lockInterruptibly();
745	<	} catch(Exception e) {
746	<	unexpectedException();
747	<	}
748	<	Thread t = new Thread(new Runnable() {
749	<	public void run() {
750	<	try {
751	<	lock.readLock().lockInterruptibly();
752	<	threadShouldThrow();
753	<	}
620	<	catch(InterruptedException success) {
621	<	}
622	<	}
623	<	});
624	<	try {
625	<	t.start();
626	<	t.interrupt();
627	<	t.join();
628	<	lock.writeLock().unlock();
629	<	} catch(Exception e){
630	<	unexpectedException();
631	<	}
741	>	public void testReadLockInterruptibly() throws InterruptedException {
742	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
743	>	lock.writeLock().lockInterruptibly();
744	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
745	>	public void realRun() throws InterruptedException {
746	>	lock.readLock().lockInterruptibly();
747	>	}});
748	>
749	>	t.start();
750	>	Thread.sleep(SHORT_DELAY_MS);
751	>	t.interrupt();
752	>	t.join();
753	>	lock.writeLock().unlock();
754		}
755
756		/**
757		* Calling await without holding lock throws IllegalMonitorStateException
758		*/
759	<	public void testAwait_IllegalMonitor() {
760	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
759	>	public void testAwait_IllegalMonitor() throws InterruptedException {
760	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
761		final Condition c = lock.writeLock().newCondition();
762		try {
763		c.await();
764		shouldThrow();
765	<	}
644	<	catch (IllegalMonitorStateException success) {
645	<	}
646	<	catch (Exception ex) {
647	<	shouldThrow();
648	<	}
765	>	} catch (IllegalMonitorStateException success) {}
766		}
767
768		/**
769		* Calling signal without holding lock throws IllegalMonitorStateException
770		*/
771		public void testSignal_IllegalMonitor() {
772	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
772	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
773		final Condition c = lock.writeLock().newCondition();
774		try {
775		c.signal();
776		shouldThrow();
777	<	}
661	<	catch (IllegalMonitorStateException success) {
662	<	}
663	<	catch (Exception ex) {
664	<	unexpectedException();
665	<	}
777	>	} catch (IllegalMonitorStateException success) {}
778		}
779
780		/**
781		* awaitNanos without a signal times out
782		*/
783	<	public void testAwaitNanos_Timeout() {
784	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
783	>	public void testAwaitNanos_Timeout() throws InterruptedException {
784	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
785		final Condition c = lock.writeLock().newCondition();
786	<	try {
787	<	lock.writeLock().lock();
788	<	long t = c.awaitNanos(100);
789	<	assertTrue(t <= 0);
790	<	lock.writeLock().unlock();
679	<	}
680	<	catch (Exception ex) {
681	<	unexpectedException();
682	<	}
786	>
787	>	lock.writeLock().lock();
788	>	long t = c.awaitNanos(100);
789	>	assertTrue(t <= 0);
790	>	lock.writeLock().unlock();
791		}
792
793
794		/**
795		*  timed await without a signal times out
796		*/
797	<	public void testAwait_Timeout() {
798	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
797	>	public void testAwait_Timeout() throws InterruptedException {
798	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
799		final Condition c = lock.writeLock().newCondition();
800	<	try {
801	<	lock.writeLock().lock();
802	<	lock.writeLock().unlock();
695	<	}
696	<	catch (Exception ex) {
697	<	unexpectedException();
698	<	}
800	>	lock.writeLock().lock();
801	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
802	>	lock.writeLock().unlock();
803		}
804
805		/**
806		* awaitUntil without a signal times out
807		*/
808	<	public void testAwaitUntil_Timeout() {
809	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
808	>	public void testAwaitUntil_Timeout() throws InterruptedException {
809	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
810		final Condition c = lock.writeLock().newCondition();
811	<	try {
812	<	lock.writeLock().lock();
813	<	java.util.Date d = new java.util.Date();
814	<	lock.writeLock().unlock();
711	<	}
712	<	catch (Exception ex) {
713	<	unexpectedException();
714	<	}
811	>	lock.writeLock().lock();
812	>	java.util.Date d = new java.util.Date();
813	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
814	>	lock.writeLock().unlock();
815		}
816
817		/**
818		* await returns when signalled
819		*/
820	<	public void testAwait() {
821	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
820	>	public void testAwait() throws InterruptedException {
821	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
822		final Condition c = lock.writeLock().newCondition();
823	<	Thread t = new Thread(new Runnable() {
824	<	public void run() {
825	<	try {
826	<	lock.writeLock().lock();
827	<	c.await();
828	<	lock.writeLock().unlock();
829	<	}
830	<	catch(InterruptedException e) {
831	<	threadUnexpectedException();
832	<	}
833	<	}
834	<	});
823	>	Thread t = new Thread(new CheckedRunnable() {
824	>	public void realRun() throws InterruptedException {
825	>	lock.writeLock().lock();
826	>	c.await();
827	>	lock.writeLock().unlock();
828	>	}});
829	>
830	>	t.start();
831	>	Thread.sleep(SHORT_DELAY_MS);
832	>	lock.writeLock().lock();
833	>	c.signal();
834	>	lock.writeLock().unlock();
835	>	t.join(SHORT_DELAY_MS);
836	>	assertFalse(t.isAlive());
837	>	}
838
839	<	try {
840	<	t.start();
841	<	Thread.sleep(SHORT_DELAY_MS);
842	<	lock.writeLock().lock();
843	<	c.signal();
844	<	lock.writeLock().unlock();
845	<	t.join(SHORT_DELAY_MS);
846	<	assertFalse(t.isAlive());
839	>	/** A helper class for uninterruptible wait tests */
840	>	class UninterruptableThread extends Thread {
841	>	private Lock lock;
842	>	private Condition c;
843	>
844	>	public volatile boolean canAwake = false;
845	>	public volatile boolean interrupted = false;
846	>	public volatile boolean lockStarted = false;
847	>
848	>	public UninterruptableThread(Lock lock, Condition c) {
849	>	this.lock = lock;
850	>	this.c = c;
851		}
852	<	catch (Exception ex) {
853	<	unexpectedException();
852	>
853	>	public synchronized void run() {
854	>	lock.lock();
855	>	lockStarted = true;
856	>
857	>	while (!canAwake) {
858	>	c.awaitUninterruptibly();
859	>	}
860	>
861	>	interrupted = isInterrupted();
862	>	lock.unlock();
863		}
864		}
865
866		/**
867		* awaitUninterruptibly doesn't abort on interrupt
868		*/
869	<	public void testAwaitUninterruptibly() {
870	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
869	>	public void testAwaitUninterruptibly() throws InterruptedException {
870	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
871		final Condition c = lock.writeLock().newCondition();
872	<	Thread t = new Thread(new Runnable() {
757	<	public void run() {
758	<	lock.writeLock().lock();
759	<	c.awaitUninterruptibly();
760	<	lock.writeLock().unlock();
761	<	}
762	<	});
872	>	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
873
874	+	thread.start();
875	+
876	+	while (!thread.lockStarted) {
877	+	Thread.sleep(100);
878	+	}
879	+
880	+	lock.writeLock().lock();
881		try {
882	<	t.start();
883	<	Thread.sleep(SHORT_DELAY_MS);
767	<	t.interrupt();
768	<	lock.writeLock().lock();
882	>	thread.interrupt();
883	>	thread.canAwake = true;
884		c.signal();
885	+	} finally {
886		lock.writeLock().unlock();
771	–	assert(t.isInterrupted());
772	–	t.join(SHORT_DELAY_MS);
773	–	assertFalse(t.isAlive());
774	–	}
775	–	catch (Exception ex) {
776	–	unexpectedException();
887		}
888	+
889	+	thread.join();
890	+	assertTrue(thread.interrupted);
891	+	assertFalse(thread.isAlive());
892		}
893
894		/**
895		* await is interruptible
896		*/
897	<	public void testAwait_Interrupt() {
898	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
897	>	public void testAwait_Interrupt() throws InterruptedException {
898	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
899		final Condition c = lock.writeLock().newCondition();
900	<	Thread t = new Thread(new Runnable() {
901	<	public void run() {
902	<	try {
903	<	lock.writeLock().lock();
904	<	c.await();
905	<	lock.writeLock().unlock();
906	<	threadShouldThrow();
907	<	}
908	<	catch(InterruptedException success) {
909	<	}
910	<	}
911	<	});
798	<
799	<	try {
800	<	t.start();
801	<	Thread.sleep(SHORT_DELAY_MS);
802	<	t.interrupt();
803	<	t.join(SHORT_DELAY_MS);
804	<	assertFalse(t.isAlive());
805	<	}
806	<	catch (Exception ex) {
807	<	unexpectedException();
808	<	}
900	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
901	>	public void realRun() throws InterruptedException {
902	>	lock.writeLock().lock();
903	>	c.await();
904	>	lock.writeLock().unlock();
905	>	}});
906	>
907	>	t.start();
908	>	Thread.sleep(SHORT_DELAY_MS);
909	>	t.interrupt();
910	>	t.join(SHORT_DELAY_MS);
911	>	assertFalse(t.isAlive());
912		}
913
914		/**
915		* awaitNanos is interruptible
916		*/
917	<	public void testAwaitNanos_Interrupt() {
918	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
917	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
918	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
919		final Condition c = lock.writeLock().newCondition();
920	<	Thread t = new Thread(new Runnable() {
921	<	public void run() {
922	<	try {
923	<	lock.writeLock().lock();
924	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
925	<	lock.writeLock().unlock();
926	<	threadShouldThrow();
927	<	}
928	<	catch(InterruptedException success) {
929	<	}
930	<	}
931	<	});
829	<
830	<	try {
831	<	t.start();
832	<	Thread.sleep(SHORT_DELAY_MS);
833	<	t.interrupt();
834	<	t.join(SHORT_DELAY_MS);
835	<	assertFalse(t.isAlive());
836	<	}
837	<	catch (Exception ex) {
838	<	unexpectedException();
839	<	}
920	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
921	>	public void realRun() throws InterruptedException {
922	>	lock.writeLock().lock();
923	>	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
924	>	lock.writeLock().unlock();
925	>	}});
926	>
927	>	t.start();
928	>	Thread.sleep(SHORT_DELAY_MS);
929	>	t.interrupt();
930	>	t.join(SHORT_DELAY_MS);
931	>	assertFalse(t.isAlive());
932		}
933
934		/**
935		* awaitUntil is interruptible
936		*/
937	<	public void testAwaitUntil_Interrupt() {
938	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
937	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
938	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
939		final Condition c = lock.writeLock().newCondition();
940	<	Thread t = new Thread(new Runnable() {
941	<	public void run() {
942	<	try {
943	<	lock.writeLock().lock();
944	<	java.util.Date d = new java.util.Date();
945	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
946	<	lock.writeLock().unlock();
947	<	threadShouldThrow();
948	<	}
949	<	catch(InterruptedException success) {
950	<	}
951	<	}
952	<	});
861	<
862	<	try {
863	<	t.start();
864	<	Thread.sleep(SHORT_DELAY_MS);
865	<	t.interrupt();
866	<	t.join(SHORT_DELAY_MS);
867	<	assertFalse(t.isAlive());
868	<	}
869	<	catch (Exception ex) {
870	<	unexpectedException();
871	<	}
940	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
941	>	public void realRun() throws InterruptedException {
942	>	lock.writeLock().lock();
943	>	java.util.Date d = new java.util.Date();
944	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
945	>	lock.writeLock().unlock();
946	>	}});
947	>
948	>	t.start();
949	>	Thread.sleep(SHORT_DELAY_MS);
950	>	t.interrupt();
951	>	t.join(SHORT_DELAY_MS);
952	>	assertFalse(t.isAlive());
953		}
954
955		/**
956		* signalAll wakes up all threads
957		*/
958	<	public void testSignalAll() {
959	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
958	>	public void testSignalAll() throws InterruptedException {
959	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
960		final Condition c = lock.writeLock().newCondition();
961	<	Thread t1 = new Thread(new Runnable() {
962	<	public void run() {
963	<	try {
964	<	lock.writeLock().lock();
965	<	c.await();
966	<	lock.writeLock().unlock();
967	<	}
968	<	catch(InterruptedException e) {
969	<	threadUnexpectedException();
970	<	}
971	<	}
972	<	});
973	<
974	<	Thread t2 = new Thread(new Runnable() {
975	<	public void run() {
976	<	try {
977	<	lock.writeLock().lock();
978	<	c.await();
979	<	lock.writeLock().unlock();
980	<	}
981	<	catch(InterruptedException e) {
982	<	threadUnexpectedException();
983	<	}
984	<	}
904	<	});
905	<
906	<	try {
907	<	t1.start();
908	<	t2.start();
909	<	Thread.sleep(SHORT_DELAY_MS);
910	<	lock.writeLock().lock();
911	<	c.signalAll();
912	<	lock.writeLock().unlock();
913	<	t1.join(SHORT_DELAY_MS);
914	<	t2.join(SHORT_DELAY_MS);
915	<	assertFalse(t1.isAlive());
916	<	assertFalse(t2.isAlive());
917	<	}
918	<	catch (Exception ex) {
919	<	unexpectedException();
920	<	}
961	>	Thread t1 = new Thread(new CheckedRunnable() {
962	>	public void realRun() throws InterruptedException {
963	>	lock.writeLock().lock();
964	>	c.await();
965	>	lock.writeLock().unlock();
966	>	}});
967	>
968	>	Thread t2 = new Thread(new CheckedRunnable() {
969	>	public void realRun() throws InterruptedException {
970	>	lock.writeLock().lock();
971	>	c.await();
972	>	lock.writeLock().unlock();
973	>	}});
974	>
975	>	t1.start();
976	>	t2.start();
977	>	Thread.sleep(SHORT_DELAY_MS);
978	>	lock.writeLock().lock();
979	>	c.signalAll();
980	>	lock.writeLock().unlock();
981	>	t1.join(SHORT_DELAY_MS);
982	>	t2.join(SHORT_DELAY_MS);
983	>	assertFalse(t1.isAlive());
984	>	assertFalse(t2.isAlive());
985		}
986
987		/**
988		* A serialized lock deserializes as unlocked
989		*/
990	<	public void testSerialization() {
990	>	public void testSerialization() throws Exception {
991		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
992		l.readLock().lock();
993		l.readLock().unlock();
994
995	<	try {
996	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
997	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
998	<	out.writeObject(l);
999	<	out.close();
1000	<
1001	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1002	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1003	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1004	<	r.readLock().lock();
941	<	r.readLock().unlock();
942	<	} catch(Exception e){
943	<	e.printStackTrace();
944	<	unexpectedException();
945	<	}
995	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
996	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
997	>	out.writeObject(l);
998	>	out.close();
999	>
1000	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1001	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1002	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1003	>	r.readLock().lock();
1004	>	r.readLock().unlock();
1005		}
1006
1007		/**
1008		* hasQueuedThreads reports whether there are waiting threads
1009		*/
1010	<	public void testhasQueuedThreads() {
1011	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1010	>	public void testhasQueuedThreads() throws InterruptedException {
1011	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1012		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1013		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1014	<	try {
1015	<	assertFalse(lock.hasQueuedThreads());
1016	<	lock.writeLock().lock();
1017	<	t1.start();
1018	<	Thread.sleep(SHORT_DELAY_MS);
1019	<	assertTrue(lock.hasQueuedThreads());
1020	<	t2.start();
1021	<	Thread.sleep(SHORT_DELAY_MS);
1022	<	assertTrue(lock.hasQueuedThreads());
1023	<	t1.interrupt();
1024	<	Thread.sleep(SHORT_DELAY_MS);
1025	<	assertTrue(lock.hasQueuedThreads());
1026	<	lock.writeLock().unlock();
1027	<	Thread.sleep(SHORT_DELAY_MS);
1028	<	assertFalse(lock.hasQueuedThreads());
1029	<	t1.join();
1030	<	t2.join();
972	<	} catch(Exception e){
973	<	unexpectedException();
974	<	}
975	<	}
1014	>	assertFalse(lock.hasQueuedThreads());
1015	>	lock.writeLock().lock();
1016	>	t1.start();
1017	>	Thread.sleep(SHORT_DELAY_MS);
1018	>	assertTrue(lock.hasQueuedThreads());
1019	>	t2.start();
1020	>	Thread.sleep(SHORT_DELAY_MS);
1021	>	assertTrue(lock.hasQueuedThreads());
1022	>	t1.interrupt();
1023	>	Thread.sleep(SHORT_DELAY_MS);
1024	>	assertTrue(lock.hasQueuedThreads());
1025	>	lock.writeLock().unlock();
1026	>	Thread.sleep(SHORT_DELAY_MS);
1027	>	assertFalse(lock.hasQueuedThreads());
1028	>	t1.join();
1029	>	t2.join();
1030	>	}
1031
1032		/**
1033		* hasQueuedThread(null) throws NPE
1034		*/
1035	<	public void testHasQueuedThreadNPE() {
1036	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1035	>	public void testHasQueuedThreadNPE() {
1036	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1037		try {
1038		sync.hasQueuedThread(null);
1039		shouldThrow();
1040	<	} catch (NullPointerException success) {
986	<	}
1040	>	} catch (NullPointerException success) {}
1041		}
1042
1043		/**
1044		* hasQueuedThread reports whether a thread is queued.
1045		*/
1046	<	public void testHasQueuedThread() {
1047	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1046	>	public void testHasQueuedThread() throws InterruptedException {
1047	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1048		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1049		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1050	<	try {
1051	<	assertFalse(sync.hasQueuedThread(t1));
1052	<	assertFalse(sync.hasQueuedThread(t2));
1053	<	sync.writeLock().lock();
1054	<	t1.start();
1055	<	Thread.sleep(SHORT_DELAY_MS);
1056	<	assertTrue(sync.hasQueuedThread(t1));
1057	<	t2.start();
1058	<	Thread.sleep(SHORT_DELAY_MS);
1059	<	assertTrue(sync.hasQueuedThread(t1));
1060	<	assertTrue(sync.hasQueuedThread(t2));
1061	<	t1.interrupt();
1062	<	Thread.sleep(SHORT_DELAY_MS);
1063	<	assertFalse(sync.hasQueuedThread(t1));
1064	<	assertTrue(sync.hasQueuedThread(t2));
1065	<	sync.writeLock().unlock();
1066	<	Thread.sleep(SHORT_DELAY_MS);
1067	<	assertFalse(sync.hasQueuedThread(t1));
1068	<	Thread.sleep(SHORT_DELAY_MS);
1069	<	assertFalse(sync.hasQueuedThread(t2));
1070	<	t1.join();
1071	<	t2.join();
1018	<	} catch(Exception e){
1019	<	unexpectedException();
1020	<	}
1021	<	}
1050	>	assertFalse(sync.hasQueuedThread(t1));
1051	>	assertFalse(sync.hasQueuedThread(t2));
1052	>	sync.writeLock().lock();
1053	>	t1.start();
1054	>	Thread.sleep(SHORT_DELAY_MS);
1055	>	assertTrue(sync.hasQueuedThread(t1));
1056	>	t2.start();
1057	>	Thread.sleep(SHORT_DELAY_MS);
1058	>	assertTrue(sync.hasQueuedThread(t1));
1059	>	assertTrue(sync.hasQueuedThread(t2));
1060	>	t1.interrupt();
1061	>	Thread.sleep(SHORT_DELAY_MS);
1062	>	assertFalse(sync.hasQueuedThread(t1));
1063	>	assertTrue(sync.hasQueuedThread(t2));
1064	>	sync.writeLock().unlock();
1065	>	Thread.sleep(SHORT_DELAY_MS);
1066	>	assertFalse(sync.hasQueuedThread(t1));
1067	>	Thread.sleep(SHORT_DELAY_MS);
1068	>	assertFalse(sync.hasQueuedThread(t2));
1069	>	t1.join();
1070	>	t2.join();
1071	>	}
1072
1073
1074		/**
1075		* getQueueLength reports number of waiting threads
1076		*/
1077	<	public void testGetQueueLength() {
1078	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1077	>	public void testGetQueueLength() throws InterruptedException {
1078	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1079		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1080		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1081	<	try {
1082	<	assertEquals(0, lock.getQueueLength());
1083	<	lock.writeLock().lock();
1084	<	t1.start();
1085	<	Thread.sleep(SHORT_DELAY_MS);
1086	<	assertEquals(1, lock.getQueueLength());
1087	<	t2.start();
1088	<	Thread.sleep(SHORT_DELAY_MS);
1089	<	assertEquals(2, lock.getQueueLength());
1090	<	t1.interrupt();
1091	<	Thread.sleep(SHORT_DELAY_MS);
1092	<	assertEquals(1, lock.getQueueLength());
1093	<	lock.writeLock().unlock();
1094	<	Thread.sleep(SHORT_DELAY_MS);
1095	<	assertEquals(0, lock.getQueueLength());
1096	<	t1.join();
1097	<	t2.join();
1048	<	} catch(Exception e){
1049	<	unexpectedException();
1050	<	}
1051	<	}
1081	>	assertEquals(0, lock.getQueueLength());
1082	>	lock.writeLock().lock();
1083	>	t1.start();
1084	>	Thread.sleep(SHORT_DELAY_MS);
1085	>	assertEquals(1, lock.getQueueLength());
1086	>	t2.start();
1087	>	Thread.sleep(SHORT_DELAY_MS);
1088	>	assertEquals(2, lock.getQueueLength());
1089	>	t1.interrupt();
1090	>	Thread.sleep(SHORT_DELAY_MS);
1091	>	assertEquals(1, lock.getQueueLength());
1092	>	lock.writeLock().unlock();
1093	>	Thread.sleep(SHORT_DELAY_MS);
1094	>	assertEquals(0, lock.getQueueLength());
1095	>	t1.join();
1096	>	t2.join();
1097	>	}
1098
1099		/**
1100		* getQueuedThreads includes waiting threads
1101		*/
1102	<	public void testGetQueuedThreads() {
1103	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1102	>	public void testGetQueuedThreads() throws InterruptedException {
1103	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1104		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1105		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1106	<	try {
1107	<	assertTrue(lock.getQueuedThreads().isEmpty());
1108	<	lock.writeLock().lock();
1109	<	assertTrue(lock.getQueuedThreads().isEmpty());
1110	<	t1.start();
1111	<	Thread.sleep(SHORT_DELAY_MS);
1112	<	assertTrue(lock.getQueuedThreads().contains(t1));
1113	<	t2.start();
1114	<	Thread.sleep(SHORT_DELAY_MS);
1115	<	assertTrue(lock.getQueuedThreads().contains(t1));
1116	<	assertTrue(lock.getQueuedThreads().contains(t2));
1117	<	t1.interrupt();
1118	<	Thread.sleep(SHORT_DELAY_MS);
1119	<	assertFalse(lock.getQueuedThreads().contains(t1));
1120	<	assertTrue(lock.getQueuedThreads().contains(t2));
1121	<	lock.writeLock().unlock();
1122	<	Thread.sleep(SHORT_DELAY_MS);
1123	<	assertTrue(lock.getQueuedThreads().isEmpty());
1124	<	t1.join();
1125	<	t2.join();
1080	<	} catch(Exception e){
1081	<	unexpectedException();
1082	<	}
1083	<	}
1106	>	assertTrue(lock.getQueuedThreads().isEmpty());
1107	>	lock.writeLock().lock();
1108	>	assertTrue(lock.getQueuedThreads().isEmpty());
1109	>	t1.start();
1110	>	Thread.sleep(SHORT_DELAY_MS);
1111	>	assertTrue(lock.getQueuedThreads().contains(t1));
1112	>	t2.start();
1113	>	Thread.sleep(SHORT_DELAY_MS);
1114	>	assertTrue(lock.getQueuedThreads().contains(t1));
1115	>	assertTrue(lock.getQueuedThreads().contains(t2));
1116	>	t1.interrupt();
1117	>	Thread.sleep(SHORT_DELAY_MS);
1118	>	assertFalse(lock.getQueuedThreads().contains(t1));
1119	>	assertTrue(lock.getQueuedThreads().contains(t2));
1120	>	lock.writeLock().unlock();
1121	>	Thread.sleep(SHORT_DELAY_MS);
1122	>	assertTrue(lock.getQueuedThreads().isEmpty());
1123	>	t1.join();
1124	>	t2.join();
1125	>	}
1126
1127		/**
1128		* hasWaiters throws NPE if null
1129		*/
1130		public void testHasWaitersNPE() {
1131	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1132		try {
1133		lock.hasWaiters(null);
1134		shouldThrow();
1135	<	} catch (NullPointerException success) {
1094	<	} catch (Exception ex) {
1095	<	unexpectedException();
1096	<	}
1135	>	} catch (NullPointerException success) {}
1136		}
1137
1138		/**
1139		* getWaitQueueLength throws NPE if null
1140		*/
1141		public void testGetWaitQueueLengthNPE() {
1142	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1142	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1143		try {
1144		lock.getWaitQueueLength(null);
1145		shouldThrow();
1146	<	} catch (NullPointerException success) {
1108	<	} catch (Exception ex) {
1109	<	unexpectedException();
1110	<	}
1146	>	} catch (NullPointerException success) {}
1147		}
1148
1149
#	Line 1115 | Line 1151 | public class ReentrantReadWriteLockTest
1151		* getWaitingThreads throws NPE if null
1152		*/
1153		public void testGetWaitingThreadsNPE() {
1154	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1154	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1155		try {
1156		lock.getWaitingThreads(null);
1157		shouldThrow();
1158	<	} catch (NullPointerException success) {
1123	<	} catch (Exception ex) {
1124	<	unexpectedException();
1125	<	}
1158	>	} catch (NullPointerException success) {}
1159		}
1160
1161		/**
1162		* hasWaiters throws IAE if not owned
1163		*/
1164		public void testHasWaitersIAE() {
1165	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1166	<	final Condition c = (lock.writeLock().newCondition());
1167	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1165	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1166	>	final Condition c = lock.writeLock().newCondition();
1167	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1168		try {
1169		lock2.hasWaiters(c);
1170		shouldThrow();
1171	<	} catch (IllegalArgumentException success) {
1139	<	} catch (Exception ex) {
1140	<	unexpectedException();
1141	<	}
1171	>	} catch (IllegalArgumentException success) {}
1172		}
1173
1174		/**
1175		* hasWaiters throws IMSE if not locked
1176		*/
1177		public void testHasWaitersIMSE() {
1178	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1179	<	final Condition c = (lock.writeLock().newCondition());
1178	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1179	>	final Condition c = lock.writeLock().newCondition();
1180		try {
1181		lock.hasWaiters(c);
1182		shouldThrow();
1183	<	} catch (IllegalMonitorStateException success) {
1154	<	} catch (Exception ex) {
1155	<	unexpectedException();
1156	<	}
1183	>	} catch (IllegalMonitorStateException success) {}
1184		}
1185
1186
#	Line 1161 | Line 1188 | public class ReentrantReadWriteLockTest
1188		* getWaitQueueLength throws IAE if not owned
1189		*/
1190		public void testGetWaitQueueLengthIAE() {
1191	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1192	<	final Condition c = (lock.writeLock().newCondition());
1193	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1191	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1192	>	final Condition c = lock.writeLock().newCondition();
1193	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1194		try {
1195		lock2.getWaitQueueLength(c);
1196		shouldThrow();
1197	<	} catch (IllegalArgumentException success) {
1171	<	} catch (Exception ex) {
1172	<	unexpectedException();
1173	<	}
1197	>	} catch (IllegalArgumentException success) {}
1198		}
1199
1200		/**
1201		* getWaitQueueLength throws IMSE if not locked
1202		*/
1203		public void testGetWaitQueueLengthIMSE() {
1204	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1205	<	final Condition c = (lock.writeLock().newCondition());
1204	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1205	>	final Condition c = lock.writeLock().newCondition();
1206		try {
1207		lock.getWaitQueueLength(c);
1208		shouldThrow();
1209	<	} catch (IllegalMonitorStateException success) {
1186	<	} catch (Exception ex) {
1187	<	unexpectedException();
1188	<	}
1209	>	} catch (IllegalMonitorStateException success) {}
1210		}
1211
1212
#	Line 1193 | Line 1214 | public class ReentrantReadWriteLockTest
1214		* getWaitingThreads throws IAE if not owned
1215		*/
1216		public void testGetWaitingThreadsIAE() {
1217	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1218	<	final Condition c = (lock.writeLock().newCondition());
1219	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1217	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1218	>	final Condition c = lock.writeLock().newCondition();
1219	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1220		try {
1221		lock2.getWaitingThreads(c);
1222		shouldThrow();
1223	<	} catch (IllegalArgumentException success) {
1203	<	} catch (Exception ex) {
1204	<	unexpectedException();
1205	<	}
1223	>	} catch (IllegalArgumentException success) {}
1224		}
1225
1226		/**
1227		* getWaitingThreads throws IMSE if not locked
1228		*/
1229		public void testGetWaitingThreadsIMSE() {
1230	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1231	<	final Condition c = (lock.writeLock().newCondition());
1230	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1231	>	final Condition c = lock.writeLock().newCondition();
1232		try {
1233		lock.getWaitingThreads(c);
1234		shouldThrow();
1235	<	} catch (IllegalMonitorStateException success) {
1218	<	} catch (Exception ex) {
1219	<	unexpectedException();
1220	<	}
1235	>	} catch (IllegalMonitorStateException success) {}
1236		}
1237
1238
1239		/**
1240		* hasWaiters returns true when a thread is waiting, else false
1241		*/
1242	<	public void testHasWaiters() {
1243	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1244	<	final Condition c = (lock.writeLock().newCondition());
1245	<	Thread t = new Thread(new Runnable() {
1246	<	public void run() {
1247	<	try {
1248	<	lock.writeLock().lock();
1249	<	threadAssertFalse(lock.hasWaiters(c));
1250	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1251	<	c.await();
1252	<	lock.writeLock().unlock();
1253	<	}
1254	<	catch(InterruptedException e) {
1255	<	threadUnexpectedException();
1256	<	}
1257	<	}
1258	<	});
1259	<
1260	<	try {
1261	<	t.start();
1262	<	Thread.sleep(SHORT_DELAY_MS);
1263	<	lock.writeLock().lock();
1264	<	assertTrue(lock.hasWaiters(c));
1265	<	assertEquals(1, lock.getWaitQueueLength(c));
1266	<	c.signal();
1267	<	lock.writeLock().unlock();
1253	<	Thread.sleep(SHORT_DELAY_MS);
1254	<	lock.writeLock().lock();
1255	<	assertFalse(lock.hasWaiters(c));
1256	<	assertEquals(0, lock.getWaitQueueLength(c));
1257	<	lock.writeLock().unlock();
1258	<	t.join(SHORT_DELAY_MS);
1259	<	assertFalse(t.isAlive());
1260	<	}
1261	<	catch (Exception ex) {
1262	<	unexpectedException();
1263	<	}
1242	>	public void testHasWaiters() throws InterruptedException {
1243	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1244	>	final Condition c = lock.writeLock().newCondition();
1245	>	Thread t = new Thread(new CheckedRunnable() {
1246	>	public void realRun() throws InterruptedException {
1247	>	lock.writeLock().lock();
1248	>	threadAssertFalse(lock.hasWaiters(c));
1249	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1250	>	c.await();
1251	>	lock.writeLock().unlock();
1252	>	}});
1253	>
1254	>	t.start();
1255	>	Thread.sleep(SHORT_DELAY_MS);
1256	>	lock.writeLock().lock();
1257	>	assertTrue(lock.hasWaiters(c));
1258	>	assertEquals(1, lock.getWaitQueueLength(c));
1259	>	c.signal();
1260	>	lock.writeLock().unlock();
1261	>	Thread.sleep(SHORT_DELAY_MS);
1262	>	lock.writeLock().lock();
1263	>	assertFalse(lock.hasWaiters(c));
1264	>	assertEquals(0, lock.getWaitQueueLength(c));
1265	>	lock.writeLock().unlock();
1266	>	t.join(SHORT_DELAY_MS);
1267	>	assertFalse(t.isAlive());
1268		}
1269
1270		/**
1271		* getWaitQueueLength returns number of waiting threads
1272		*/
1273	<	public void testGetWaitQueueLength() {
1274	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1275	<	final Condition c = (lock.writeLock().newCondition());
1276	<	Thread t = new Thread(new Runnable() {
1277	<	public void run() {
1278	<	try {
1279	<	lock.writeLock().lock();
1280	<	threadAssertFalse(lock.hasWaiters(c));
1281	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1282	<	c.await();
1283	<	lock.writeLock().unlock();
1284	<	}
1285	<	catch(InterruptedException e) {
1286	<	threadUnexpectedException();
1287	<	}
1288	<	}
1289	<	});
1290	<
1291	<	try {
1292	<	t.start();
1293	<	Thread.sleep(SHORT_DELAY_MS);
1294	<	lock.writeLock().lock();
1295	<	assertTrue(lock.hasWaiters(c));
1296	<	assertEquals(1, lock.getWaitQueueLength(c));
1297	<	c.signal();
1298	<	lock.writeLock().unlock();
1295	<	Thread.sleep(SHORT_DELAY_MS);
1296	<	lock.writeLock().lock();
1297	<	assertFalse(lock.hasWaiters(c));
1298	<	assertEquals(0, lock.getWaitQueueLength(c));
1299	<	lock.writeLock().unlock();
1300	<	t.join(SHORT_DELAY_MS);
1301	<	assertFalse(t.isAlive());
1302	<	}
1303	<	catch (Exception ex) {
1304	<	unexpectedException();
1305	<	}
1273	>	public void testGetWaitQueueLength() throws InterruptedException {
1274	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1275	>	final Condition c = lock.writeLock().newCondition();
1276	>	Thread t = new Thread(new CheckedRunnable() {
1277	>	public void realRun() throws InterruptedException {
1278	>	lock.writeLock().lock();
1279	>	threadAssertFalse(lock.hasWaiters(c));
1280	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1281	>	c.await();
1282	>	lock.writeLock().unlock();
1283	>	}});
1284	>
1285	>	t.start();
1286	>	Thread.sleep(SHORT_DELAY_MS);
1287	>	lock.writeLock().lock();
1288	>	assertTrue(lock.hasWaiters(c));
1289	>	assertEquals(1, lock.getWaitQueueLength(c));
1290	>	c.signal();
1291	>	lock.writeLock().unlock();
1292	>	Thread.sleep(SHORT_DELAY_MS);
1293	>	lock.writeLock().lock();
1294	>	assertFalse(lock.hasWaiters(c));
1295	>	assertEquals(0, lock.getWaitQueueLength(c));
1296	>	lock.writeLock().unlock();
1297	>	t.join(SHORT_DELAY_MS);
1298	>	assertFalse(t.isAlive());
1299		}
1300
1301
1302		/**
1303		* getWaitingThreads returns only and all waiting threads
1304		*/
1305	<	public void testGetWaitingThreads() {
1306	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1305	>	public void testGetWaitingThreads() throws InterruptedException {
1306	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1307		final Condition c = lock.writeLock().newCondition();
1308	<	Thread t1 = new Thread(new Runnable() {
1309	<	public void run() {
1310	<	try {
1311	<	lock.writeLock().lock();
1312	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1313	<	c.await();
1314	<	lock.writeLock().unlock();
1315	<	}
1316	<	catch(InterruptedException e) {
1317	<	threadUnexpectedException();
1318	<	}
1319	<	}
1320	<	});
1321	<
1322	<	Thread t2 = new Thread(new Runnable() {
1330	<	public void run() {
1331	<	try {
1332	<	lock.writeLock().lock();
1333	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1334	<	c.await();
1335	<	lock.writeLock().unlock();
1336	<	}
1337	<	catch(InterruptedException e) {
1338	<	threadUnexpectedException();
1339	<	}
1340	<	}
1341	<	});
1308	>	Thread t1 = new Thread(new CheckedRunnable() {
1309	>	public void realRun() throws InterruptedException {
1310	>	lock.writeLock().lock();
1311	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1312	>	c.await();
1313	>	lock.writeLock().unlock();
1314	>	}});
1315	>
1316	>	Thread t2 = new Thread(new CheckedRunnable() {
1317	>	public void realRun() throws InterruptedException {
1318	>	lock.writeLock().lock();
1319	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1320	>	c.await();
1321	>	lock.writeLock().unlock();
1322	>	}});
1323
1324	<	try {
1325	<	lock.writeLock().lock();
1326	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1327	<	lock.writeLock().unlock();
1328	<	t1.start();
1329	<	Thread.sleep(SHORT_DELAY_MS);
1330	<	t2.start();
1331	<	Thread.sleep(SHORT_DELAY_MS);
1332	<	lock.writeLock().lock();
1333	<	assertTrue(lock.hasWaiters(c));
1334	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1335	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1336	<	c.signalAll();
1337	<	lock.writeLock().unlock();
1338	<	Thread.sleep(SHORT_DELAY_MS);
1339	<	lock.writeLock().lock();
1340	<	assertFalse(lock.hasWaiters(c));
1341	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1342	<	lock.writeLock().unlock();
1343	<	t1.join(SHORT_DELAY_MS);
1344	<	t2.join(SHORT_DELAY_MS);
1345	<	assertFalse(t1.isAlive());
1365	<	assertFalse(t2.isAlive());
1366	<	}
1367	<	catch (Exception ex) {
1368	<	unexpectedException();
1369	<	}
1324	>	lock.writeLock().lock();
1325	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1326	>	lock.writeLock().unlock();
1327	>	t1.start();
1328	>	Thread.sleep(SHORT_DELAY_MS);
1329	>	t2.start();
1330	>	Thread.sleep(SHORT_DELAY_MS);
1331	>	lock.writeLock().lock();
1332	>	assertTrue(lock.hasWaiters(c));
1333	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1334	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1335	>	c.signalAll();
1336	>	lock.writeLock().unlock();
1337	>	Thread.sleep(SHORT_DELAY_MS);
1338	>	lock.writeLock().lock();
1339	>	assertFalse(lock.hasWaiters(c));
1340	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1341	>	lock.writeLock().unlock();
1342	>	t1.join(SHORT_DELAY_MS);
1343	>	t2.join(SHORT_DELAY_MS);
1344	>	assertFalse(t1.isAlive());
1345	>	assertFalse(t2.isAlive());
1346		}
1347
1348		/**

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