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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.24 by dl, Tue Aug 2 11:34:04 2005 UTC vs.
Revision 1.35 by jsr166, Sat Nov 21 02:07:27 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);
20	>	return new TestSuite(ReentrantReadWriteLockTest.class);
21		}
22
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() {
64	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
63	>	public void testConstructor() {
64	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
65		assertFalse(rl.isFair());
66		assertFalse(rl.isWriteLocked());
67		assertEquals(0, rl.getReadLockCount());
68	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
68	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
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() {
82	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
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() {
108	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
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 127 | Line 130 | public class ReentrantReadWriteLockTest
130		* getWriteHoldCount returns number of recursive holds
131		*/
132		public void testGetWriteHoldCount() {
133	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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--) {
139	<	lock.writeLock().unlock();
140	<	assertEquals(i-1,lock.getWriteHoldCount());
141	<	}
133	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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--) {
139	>	lock.writeLock().unlock();
140	>	assertEquals(i-1,lock.getWriteHoldCount());
141	>	}
142	>	}
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	<	}
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	<
173	>
174
175		/**
176		* write-unlocking an unlocked lock throws IllegalMonitorStateException
177		*/
178	<	public void testUnlock_IllegalMonitorStateException() {
179	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
180	<	try {
181	<	rl.writeLock().unlock();
182	<	shouldThrow();
183	<	} catch(IllegalMonitorStateException success){}
178	>	public void testUnlock_IllegalMonitorStateException() {
179	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
180	>	try {
181	>	rl.writeLock().unlock();
182	>	shouldThrow();
183	>	} catch (IllegalMonitorStateException success) {}
184		}
185
186
187		/**
188		* write-lockInterruptibly is interruptible
189		*/
190	<	public void testWriteLockInterruptibly_Interrupted() {
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();
190	<	} catch(Exception e){
191	<	unexpectedException();
192	<	}
193	<	}
190	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
191	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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() {
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();
210	<	t.interrupt();
211	<	lock.writeLock().unlock();
212	<	t.join();
213	<	} catch(Exception e){
214	<	unexpectedException();
215	<	}
212	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
213	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
214	>	lock.writeLock().lock();
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() {
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();
236	<	} catch(Exception e){
237	<	unexpectedException();
238	<	}
239	<	}
229	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
230	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
231	>	lock.writeLock().lock();
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() {
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	<	});
255	<	try {
256	<	t.start();
257	<	t.interrupt();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
248	>	public void testReadTryLock_Interrupted() throws InterruptedException {
249	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
250	>	lock.writeLock().lock();
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() {
266	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
267	<	lock.writeLock().lock();
268	<	Thread t = new Thread(new Runnable() {
265	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
266	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
267	>	lock.writeLock().lock();
268	>	Thread t = new Thread(new Runnable() {
269		public void run() {
270		threadAssertFalse(lock.writeLock().tryLock());
271	<	}
272	<	});
273	<	try {
274	<	t.start();
275	<	t.join();
276	<	lock.writeLock().unlock();
277	<	} catch(Exception e){
281	<	unexpectedException();
282	<	}
283	<	}
271	>	}
272	>	});
273	>
274	>	t.start();
275	>	t.join();
276	>	lock.writeLock().unlock();
277	>	}
278
279		/**
280		* read-tryLock fails if locked
281		*/
282	<	public void testReadTryLockWhenLocked() {
283	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
284	<	lock.writeLock().lock();
285	<	Thread t = new Thread(new Runnable() {
282	>	public void testReadTryLockWhenLocked() throws InterruptedException {
283	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
284	>	lock.writeLock().lock();
285	>	Thread t = new Thread(new Runnable() {
286		public void run() {
287		threadAssertFalse(lock.readLock().tryLock());
288	<	}
289	<	});
290	<	try {
291	<	t.start();
292	<	t.join();
293	<	lock.writeLock().unlock();
294	<	} catch(Exception e){
301	<	unexpectedException();
302	<	}
303	<	}
288	>	}
289	>	});
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() {
300	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301	<	lock.readLock().lock();
302	<	Thread t = new Thread(new Runnable() {
299	>	public void testMultipleReadLocks() throws InterruptedException {
300	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301	>	lock.readLock().lock();
302	>	Thread t = new Thread(new Runnable() {
303		public void run() {
304		threadAssertTrue(lock.readLock().tryLock());
305		lock.readLock().unlock();
306	<	}
307	<	});
308	<	try {
309	<	t.start();
310	<	t.join();
311	<	lock.readLock().unlock();
312	<	} catch(Exception e){
322	<	unexpectedException();
323	<	}
324	<	}
306	>	}
307	>	});
308	>
309	>	t.start();
310	>	t.join();
311	>	lock.readLock().unlock();
312	>	}
313
314		/**
315		* A writelock succeeds after reading threads unlock
316		*/
317	<	public void testWriteAfterMultipleReadLocks() {
318	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319	<	lock.readLock().lock();
320	<	Thread t1 = new Thread(new Runnable() {
317	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
318	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319	>	lock.readLock().lock();
320	>	Thread t1 = new Thread(new Runnable() {
321		public void run() {
322		lock.readLock().lock();
323		lock.readLock().unlock();
324	<	}
325	<	});
326	<	Thread t2 = new Thread(new Runnable() {
324	>	}
325	>	});
326	>	Thread t2 = new Thread(new Runnable() {
327		public void run() {
328		lock.writeLock().lock();
329		lock.writeLock().unlock();
330	<	}
331	<	});
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());
354	<
355	<	} catch(Exception e){
356	<	unexpectedException();
357	<	}
358	<	}
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() {
347	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
348	<	lock.writeLock().lock();
349	<	Thread t1 = new Thread(new Runnable() {
346	>	public void testReadAfterWriteLock() throws InterruptedException {
347	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
348	>	lock.writeLock().lock();
349	>	Thread t1 = new Thread(new Runnable() {
350		public void run() {
351		lock.readLock().lock();
352		lock.readLock().unlock();
353	<	}
354	<	});
355	<	Thread t2 = new Thread(new Runnable() {
353	>	}
354	>	});
355	>	Thread t2 = new Thread(new Runnable() {
356		public void run() {
357		lock.readLock().lock();
358		lock.readLock().unlock();
359	<	}
360	<	});
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());
388	<
389	<	} catch(Exception e){
390	<	unexpectedException();
391	<	}
392	<	}
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();
375	>	public void testReadHoldingWriteLock() {
376	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
377	>	lock.writeLock().lock();
378		assertTrue(lock.readLock().tryLock());
379		lock.readLock().unlock();
380		lock.writeLock().unlock();
381	<	}
381	>	}
382
383		/**
384		* Read lock succeeds if write locked by current thread even if
385		* other threads are waiting for readlock
386		*/
387	<	public void testReadHoldingWriteLock2() {
388	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
389	<	lock.writeLock().lock();
390	<	Thread t1 = new Thread(new Runnable() {
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() {
394	>	}
395	>	});
396	>	Thread t2 = new Thread(new Runnable() {
397		public void run() {
398		lock.readLock().lock();
399		lock.readLock().unlock();
400	<	}
401	<	});
400	>	}
401	>	});
402
403	<	try {
404	<	t1.start();
405	<	t2.start();
406	<	lock.readLock().lock();
407	<	lock.readLock().unlock();
408	<	Thread.sleep(SHORT_DELAY_MS);
409	<	lock.readLock().lock();
410	<	lock.readLock().unlock();
411	<	lock.writeLock().unlock();
412	<	t1.join(MEDIUM_DELAY_MS);
413	<	t2.join(MEDIUM_DELAY_MS);
414	<	assertTrue(!t1.isAlive());
415	<	assertTrue(!t2.isAlive());
438	<
439	<	} catch(Exception e){
440	<	unexpectedException();
441	<	}
442	<	}
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() {
422	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
423	<	lock.writeLock().lock();
424	<	Thread t1 = new Thread(new Runnable() {
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() {
428	>	}
429	>	});
430	>	Thread t2 = new Thread(new Runnable() {
431		public void run() {
432		lock.writeLock().lock();
433		lock.writeLock().unlock();
434	<	}
435	<	});
434	>	}
435	>	});
436
437	<	try {
438	<	t1.start();
439	<	t2.start();
440	<	lock.readLock().lock();
441	<	lock.readLock().unlock();
442	<	Thread.sleep(SHORT_DELAY_MS);
443	<	lock.readLock().lock();
444	<	lock.readLock().unlock();
445	<	lock.writeLock().unlock();
446	<	t1.join(MEDIUM_DELAY_MS);
447	<	t2.join(MEDIUM_DELAY_MS);
448	<	assertTrue(!t1.isAlive());
449	<	assertTrue(!t2.isAlive());
477	<
478	<	} catch(Exception e){
479	<	unexpectedException();
480	<	}
481	<	}
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() {
457	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
458	<	lock.writeLock().lock();
459	<	Thread t1 = new Thread(new Runnable() {
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() {
463	>	}
464	>	});
465	>	Thread t2 = new Thread(new Runnable() {
466		public void run() {
467		lock.writeLock().lock();
468		lock.writeLock().unlock();
469	<	}
470	<	});
469	>	}
470	>	});
471
472	<	try {
473	<	t1.start();
474	<	t2.start();
475	<	lock.writeLock().lock();
476	<	lock.writeLock().unlock();
477	<	Thread.sleep(SHORT_DELAY_MS);
478	<	lock.writeLock().lock();
479	<	lock.writeLock().unlock();
480	<	lock.writeLock().unlock();
481	<	t1.join(MEDIUM_DELAY_MS);
482	<	t2.join(MEDIUM_DELAY_MS);
483	<	assertTrue(!t1.isAlive());
484	<	assertTrue(!t2.isAlive());
517	<
518	<	} catch(Exception e){
519	<	unexpectedException();
520	<	}
521	<	}
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();
490	>	public void testReadHoldingWriteLockFair() {
491	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
492	>	lock.writeLock().lock();
493		assertTrue(lock.readLock().tryLock());
494		lock.readLock().unlock();
495		lock.writeLock().unlock();
496	<	}
496	>	}
497
498		/**
499		* Fair Read lock succeeds if write locked by current thread even if
500		* other threads are waiting for readlock
501		*/
502	<	public void testReadHoldingWriteLockFair2() {
503	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504	<	lock.writeLock().lock();
505	<	Thread t1 = new Thread(new Runnable() {
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() {
509	>	}
510	>	});
511	>	Thread t2 = new Thread(new Runnable() {
512		public void run() {
513		lock.readLock().lock();
514		lock.readLock().unlock();
515	<	}
516	<	});
515	>	}
516	>	});
517
518	<	try {
519	<	t1.start();
520	<	t2.start();
521	<	lock.readLock().lock();
522	<	lock.readLock().unlock();
523	<	Thread.sleep(SHORT_DELAY_MS);
524	<	lock.readLock().lock();
525	<	lock.readLock().unlock();
526	<	lock.writeLock().unlock();
527	<	t1.join(MEDIUM_DELAY_MS);
528	<	t2.join(MEDIUM_DELAY_MS);
529	<	assertTrue(!t1.isAlive());
530	<	assertTrue(!t2.isAlive());
568	<
569	<	} catch(Exception e){
570	<	unexpectedException();
571	<	}
572	<	}
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() {
538	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
539	<	lock.writeLock().lock();
540	<	Thread t1 = new Thread(new Runnable() {
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() {
544	>	}
545	>	});
546	>	Thread t2 = new Thread(new Runnable() {
547		public void run() {
548		lock.writeLock().lock();
549		lock.writeLock().unlock();
550	<	}
551	<	});
550	>	}
551	>	});
552
553	<	try {
554	<	t1.start();
555	<	t2.start();
556	<	lock.readLock().lock();
557	<	lock.readLock().unlock();
558	<	Thread.sleep(SHORT_DELAY_MS);
559	<	lock.readLock().lock();
560	<	lock.readLock().unlock();
561	<	lock.writeLock().unlock();
562	<	t1.join(MEDIUM_DELAY_MS);
563	<	t2.join(MEDIUM_DELAY_MS);
564	<	assertTrue(!t1.isAlive());
565	<	assertTrue(!t2.isAlive());
608	<
609	<	} catch(Exception e){
610	<	unexpectedException();
611	<	}
612	<	}
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() {
573	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
574	<	lock.writeLock().lock();
575	<	Thread t1 = new Thread(new Runnable() {
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() {
579	>	}
580	>	});
581	>	Thread t2 = new Thread(new Runnable() {
582		public void run() {
583		lock.writeLock().lock();
584		lock.writeLock().unlock();
585	<	}
586	<	});
585	>	}
586	>	});
587
588	<	try {
589	<	t1.start();
590	<	t2.start();
591	<	Thread.sleep(SHORT_DELAY_MS);
592	<	assertTrue(lock.isWriteLockedByCurrentThread());
593	<	assertTrue(lock.getWriteHoldCount() == 1);
594	<	lock.writeLock().lock();
595	<	assertTrue(lock.getWriteHoldCount() == 2);
596	<	lock.writeLock().unlock();
597	<	lock.writeLock().lock();
598	<	lock.writeLock().unlock();
599	<	lock.writeLock().unlock();
600	<	t1.join(MEDIUM_DELAY_MS);
601	<	t2.join(MEDIUM_DELAY_MS);
602	<	assertTrue(!t1.isAlive());
603	<	assertTrue(!t2.isAlive());
651	<
652	<	} catch(Exception e){
653	<	unexpectedException();
654	<	}
655	<	}
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() {
610	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
611	<	lock.readLock().lock();
612	<	Thread t = new Thread(new Runnable() {
609	>	public void testTryLockWhenReadLocked() throws InterruptedException {
610	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
611	>	lock.readLock().lock();
612	>	Thread t = new Thread(new Runnable() {
613		public void run() {
614		threadAssertTrue(lock.readLock().tryLock());
615		lock.readLock().unlock();
616	<	}
617	<	});
618	<	try {
619	<	t.start();
620	<	t.join();
621	<	lock.readLock().unlock();
622	<	} catch(Exception e){
623	<	unexpectedException();
676	<	}
677	<	}
616	>	}
617	>	});
618	>
619	>	t.start();
620	>	t.join();
621	>	lock.readLock().unlock();
622	>	}
623	>
624
679	–
625
626		/**
627		* write tryLock fails when readlocked
628		*/
629	<	public void testWriteTryLockWhenReadLocked() {
630	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	<	lock.readLock().lock();
632	<	Thread t = new Thread(new Runnable() {
629	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
630	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	>	lock.readLock().lock();
632	>	Thread t = new Thread(new Runnable() {
633		public void run() {
634		threadAssertFalse(lock.writeLock().tryLock());
635	<	}
636	<	});
637	<	try {
638	<	t.start();
639	<	t.join();
640	<	lock.readLock().unlock();
641	<	} catch(Exception e){
697	<	unexpectedException();
698	<	}
699	<	}
635	>	}
636	>	});
637	>
638	>	t.start();
639	>	t.join();
640	>	lock.readLock().unlock();
641	>	}
642
643
644		/**
645		* Fair Read tryLock succeeds if readlocked but not writelocked
646		*/
647	<	public void testTryLockWhenReadLockedFair() {
648	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
649	<	lock.readLock().lock();
650	<	Thread t = new Thread(new Runnable() {
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		threadAssertTrue(lock.readLock().tryLock());
653		lock.readLock().unlock();
654	<	}
655	<	});
656	<	try {
657	<	t.start();
658	<	t.join();
659	<	lock.readLock().unlock();
660	<	} catch(Exception e){
661	<	unexpectedException();
720	<	}
721	<	}
654	>	}
655	>	});
656	>
657	>	t.start();
658	>	t.join();
659	>	lock.readLock().unlock();
660	>	}
661	>
662
723	–
663
664		/**
665		* Fair write tryLock fails when readlocked
666		*/
667	<	public void testWriteTryLockWhenReadLockedFair() {
668	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
669	<	lock.readLock().lock();
670	<	Thread t = new Thread(new Runnable() {
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		threadAssertFalse(lock.writeLock().tryLock());
673	<	}
674	<	});
675	<	try {
676	<	t.start();
677	<	t.join();
678	<	lock.readLock().unlock();
679	<	} catch(Exception e){
680	<	unexpectedException();
742	<	}
743	<	}
673	>	}
674	>	});
675	>
676	>	t.start();
677	>	t.join();
678	>	lock.readLock().unlock();
679	>	}
680	>
681
745	–
682
683		/**
684		* write timed tryLock times out if locked
685		*/
686	<	public void testWriteTryLock_Timeout() {
687	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
688	<	lock.writeLock().lock();
689	<	Thread t = new Thread(new Runnable() {
690	<	public void run() {
691	<	try {
692	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
693	<	} catch (Exception ex) {
694	<	threadUnexpectedException();
695	<	}
696	<	}
697	<	});
698	<	try {
763	<	t.start();
764	<	t.join();
765	<	lock.writeLock().unlock();
766	<	} catch(Exception e){
767	<	unexpectedException();
768	<	}
769	<	}
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	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
697	>	lock.writeLock().unlock();
698	>	}
699
700		/**
701		* read timed tryLock times out if write-locked
702		*/
703	<	public void testReadTryLock_Timeout() {
704	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
705	<	lock.writeLock().lock();
706	<	Thread t = new Thread(new Runnable() {
707	<	public void run() {
708	<	try {
709	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
710	<	} catch (Exception ex) {
711	<	threadUnexpectedException();
712	<	}
713	<	}
714	<	});
715	<	try {
787	<	t.start();
788	<	t.join();
789	<	lock.writeLock().unlock();
790	<	} catch(Exception e){
791	<	unexpectedException();
792	<	}
793	<	}
703	>	public void testReadTryLock_Timeout() throws InterruptedException {
704	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
705	>	lock.writeLock().lock();
706	>	Thread t = new Thread(new CheckedRunnable() {
707	>	public void realRun() throws InterruptedException {
708	>	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
709	>	}});
710	>
711	>	t.start();
712	>	t.join();
713	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
714	>	lock.writeLock().unlock();
715	>	}
716
717
718		/**
719		* write lockInterruptibly succeeds if lock free else is interruptible
720		*/
721	<	public void testWriteLockInterruptibly() {
722	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
723	<	try {
724	<	lock.writeLock().lockInterruptibly();
725	<	} catch(Exception e) {
726	<	unexpectedException();
727	<	}
728	<	Thread t = new Thread(new Runnable() {
729	<	public void run() {
730	<	try {
731	<	lock.writeLock().lockInterruptibly();
732	<	threadShouldThrow();
733	<	}
734	<	catch(InterruptedException success) {
813	<	}
814	<	}
815	<	});
816	<	try {
817	<	t.start();
818	<	t.interrupt();
819	<	t.join();
820	<	lock.writeLock().unlock();
821	<	} catch(Exception e){
822	<	unexpectedException();
823	<	}
721	>	public void testWriteLockInterruptibly() throws InterruptedException {
722	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
723	>	lock.writeLock().lockInterruptibly();
724	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
725	>	public void realRun() throws InterruptedException {
726	>	lock.writeLock().lockInterruptibly();
727	>	}});
728	>
729	>	t.start();
730	>	Thread.sleep(SHORT_DELAY_MS);
731	>	t.interrupt();
732	>	Thread.sleep(SHORT_DELAY_MS);
733	>	t.join();
734	>	lock.writeLock().unlock();
735		}
736
737		/**
738		*  read lockInterruptibly succeeds if lock free else is interruptible
739		*/
740	<	public void testReadLockInterruptibly() {
741	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
742	<	try {
743	<	lock.writeLock().lockInterruptibly();
744	<	} catch(Exception e) {
745	<	unexpectedException();
746	<	}
747	<	Thread t = new Thread(new Runnable() {
748	<	public void run() {
749	<	try {
750	<	lock.readLock().lockInterruptibly();
751	<	threadShouldThrow();
752	<	}
842	<	catch(InterruptedException success) {
843	<	}
844	<	}
845	<	});
846	<	try {
847	<	t.start();
848	<	t.interrupt();
849	<	t.join();
850	<	lock.writeLock().unlock();
851	<	} catch(Exception e){
852	<	unexpectedException();
853	<	}
740	>	public void testReadLockInterruptibly() throws InterruptedException {
741	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
742	>	lock.writeLock().lockInterruptibly();
743	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
744	>	public void realRun() throws InterruptedException {
745	>	lock.readLock().lockInterruptibly();
746	>	}});
747	>
748	>	t.start();
749	>	Thread.sleep(SHORT_DELAY_MS);
750	>	t.interrupt();
751	>	t.join();
752	>	lock.writeLock().unlock();
753		}
754
755		/**
756		* Calling await without holding lock throws IllegalMonitorStateException
757		*/
758	<	public void testAwait_IllegalMonitor() {
759	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758	>	public void testAwait_IllegalMonitor() throws InterruptedException {
759	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
760		final Condition c = lock.writeLock().newCondition();
761		try {
762		c.await();
763		shouldThrow();
764	<	}
866	<	catch (IllegalMonitorStateException success) {
867	<	}
868	<	catch (Exception ex) {
869	<	shouldThrow();
870	<	}
764	>	} catch (IllegalMonitorStateException success) {}
765		}
766
767		/**
768		* Calling signal without holding lock throws IllegalMonitorStateException
769		*/
770		public void testSignal_IllegalMonitor() {
771	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
771	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
772		final Condition c = lock.writeLock().newCondition();
773		try {
774		c.signal();
775		shouldThrow();
776	<	}
883	<	catch (IllegalMonitorStateException success) {
884	<	}
885	<	catch (Exception ex) {
886	<	unexpectedException();
887	<	}
776	>	} catch (IllegalMonitorStateException success) {}
777		}
778
779		/**
780		* awaitNanos without a signal times out
781		*/
782	<	public void testAwaitNanos_Timeout() {
783	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
782	>	public void testAwaitNanos_Timeout() throws InterruptedException {
783	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
784		final Condition c = lock.writeLock().newCondition();
785	<	try {
786	<	lock.writeLock().lock();
787	<	long t = c.awaitNanos(100);
788	<	assertTrue(t <= 0);
789	<	lock.writeLock().unlock();
901	<	}
902	<	catch (Exception ex) {
903	<	unexpectedException();
904	<	}
785	>
786	>	lock.writeLock().lock();
787	>	long t = c.awaitNanos(100);
788	>	assertTrue(t <= 0);
789	>	lock.writeLock().unlock();
790		}
791
792
793		/**
794		*  timed await without a signal times out
795		*/
796	<	public void testAwait_Timeout() {
797	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
796	>	public void testAwait_Timeout() throws InterruptedException {
797	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
798		final Condition c = lock.writeLock().newCondition();
799	<	try {
800	<	lock.writeLock().lock();
801	<	lock.writeLock().unlock();
917	<	}
918	<	catch (Exception ex) {
919	<	unexpectedException();
920	<	}
799	>	lock.writeLock().lock();
800	>	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
801	>	lock.writeLock().unlock();
802		}
803
804		/**
805		* awaitUntil without a signal times out
806		*/
807	<	public void testAwaitUntil_Timeout() {
808	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
807	>	public void testAwaitUntil_Timeout() throws InterruptedException {
808	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
809		final Condition c = lock.writeLock().newCondition();
810	<	try {
811	<	lock.writeLock().lock();
812	<	java.util.Date d = new java.util.Date();
813	<	lock.writeLock().unlock();
933	<	}
934	<	catch (Exception ex) {
935	<	unexpectedException();
936	<	}
810	>	lock.writeLock().lock();
811	>	java.util.Date d = new java.util.Date();
812	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
813	>	lock.writeLock().unlock();
814		}
815
816		/**
817		* await returns when signalled
818		*/
819	<	public void testAwait() {
820	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
819	>	public void testAwait() throws InterruptedException {
820	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
821		final Condition c = lock.writeLock().newCondition();
822	<	Thread t = new Thread(new Runnable() {
823	<	public void run() {
824	<	try {
825	<	lock.writeLock().lock();
826	<	c.await();
827	<	lock.writeLock().unlock();
951	<	}
952	<	catch(InterruptedException e) {
953	<	threadUnexpectedException();
954	<	}
955	<	}
956	<	});
822	>	Thread t = new Thread(new CheckedRunnable() {
823	>	public void realRun() throws InterruptedException {
824	>	lock.writeLock().lock();
825	>	c.await();
826	>	lock.writeLock().unlock();
827	>	}});
828
829	<	try {
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);
965	<	assertFalse(t.isAlive());
966	<	}
967	<	catch (Exception ex) {
968	<	unexpectedException();
969	<	}
829	>	t.start();
830	>	Thread.sleep(SHORT_DELAY_MS);
831	>	lock.writeLock().lock();
832	>	c.signal();
833	>	lock.writeLock().unlock();
834	>	t.join(SHORT_DELAY_MS);
835	>	assertFalse(t.isAlive());
836		}
837
838		/** A helper class for uninterruptible wait tests */
839		class UninterruptableThread extends Thread {
840		private Lock lock;
841		private Condition c;
842	<
842	>
843		public volatile boolean canAwake = false;
844		public volatile boolean interrupted = false;
845		public volatile boolean lockStarted = false;
846	<
846	>
847		public UninterruptableThread(Lock lock, Condition c) {
848		this.lock = lock;
849		this.c = c;
850		}
851	<
851	>
852		public synchronized void run() {
853		lock.lock();
854		lockStarted = true;
855	<
855	>
856		while (!canAwake) {
857		c.awaitUninterruptibly();
858		}
859	<
859	>
860		interrupted = isInterrupted();
861		lock.unlock();
862		}
#	Line 999 | Line 865 | public class ReentrantReadWriteLockTest
865		/**
866		* awaitUninterruptibly doesn't abort on interrupt
867		*/
868	<	public void testAwaitUninterruptibly() {
868	>	public void testAwaitUninterruptibly() throws InterruptedException {
869		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
870		final Condition c = lock.writeLock().newCondition();
871		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
872
873	<	try {
1008	<	thread.start();
1009	<
1010	<	while (!thread.lockStarted) {
1011	<	Thread.sleep(100);
1012	<	}
873	>	thread.start();
874
875	<	lock.writeLock().lock();
876	<	try {
877	<	thread.interrupt();
1017	<	thread.canAwake = true;
1018	<	c.signal();
1019	<	} finally {
1020	<	lock.writeLock().unlock();
1021	<	}
875	>	while (!thread.lockStarted) {
876	>	Thread.sleep(100);
877	>	}
878
879	<	thread.join();
880	<	assertTrue(thread.interrupted);
881	<	assertFalse(thread.isAlive());
882	<	} catch (Exception ex) {
883	<	unexpectedException();
879	>	lock.writeLock().lock();
880	>	try {
881	>	thread.interrupt();
882	>	thread.canAwake = true;
883	>	c.signal();
884	>	} finally {
885	>	lock.writeLock().unlock();
886		}
887	+
888	+	thread.join();
889	+	assertTrue(thread.interrupted);
890	+	assertFalse(thread.isAlive());
891		}
892
893		/**
894		* await is interruptible
895		*/
896	<	public void testAwait_Interrupt() {
897	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
896	>	public void testAwait_Interrupt() throws InterruptedException {
897	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
898		final Condition c = lock.writeLock().newCondition();
899	<	Thread t = new Thread(new Runnable() {
900	<	public void run() {
901	<	try {
902	<	lock.writeLock().lock();
903	<	c.await();
904	<	lock.writeLock().unlock();
1043	<	threadShouldThrow();
1044	<	}
1045	<	catch(InterruptedException success) {
1046	<	}
1047	<	}
1048	<	});
899	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
900	>	public void realRun() throws InterruptedException {
901	>	lock.writeLock().lock();
902	>	c.await();
903	>	lock.writeLock().unlock();
904	>	}});
905
906	<	try {
907	<	t.start();
908	<	Thread.sleep(SHORT_DELAY_MS);
909	<	t.interrupt();
910	<	t.join(SHORT_DELAY_MS);
1055	<	assertFalse(t.isAlive());
1056	<	}
1057	<	catch (Exception ex) {
1058	<	unexpectedException();
1059	<	}
906	>	t.start();
907	>	Thread.sleep(SHORT_DELAY_MS);
908	>	t.interrupt();
909	>	t.join(SHORT_DELAY_MS);
910	>	assertFalse(t.isAlive());
911		}
912
913		/**
914		* awaitNanos is interruptible
915		*/
916	<	public void testAwaitNanos_Interrupt() {
917	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
916	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
917	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
918		final Condition c = lock.writeLock().newCondition();
919	<	Thread t = new Thread(new Runnable() {
920	<	public void run() {
921	<	try {
922	<	lock.writeLock().lock();
923	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
924	<	lock.writeLock().unlock();
1074	<	threadShouldThrow();
1075	<	}
1076	<	catch(InterruptedException success) {
1077	<	}
1078	<	}
1079	<	});
919	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
920	>	public void realRun() throws InterruptedException {
921	>	lock.writeLock().lock();
922	>	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
923	>	lock.writeLock().unlock();
924	>	}});
925
926	<	try {
927	<	t.start();
928	<	Thread.sleep(SHORT_DELAY_MS);
929	<	t.interrupt();
930	<	t.join(SHORT_DELAY_MS);
1086	<	assertFalse(t.isAlive());
1087	<	}
1088	<	catch (Exception ex) {
1089	<	unexpectedException();
1090	<	}
926	>	t.start();
927	>	Thread.sleep(SHORT_DELAY_MS);
928	>	t.interrupt();
929	>	t.join(SHORT_DELAY_MS);
930	>	assertFalse(t.isAlive());
931		}
932
933		/**
934		* awaitUntil is interruptible
935		*/
936	<	public void testAwaitUntil_Interrupt() {
937	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
936	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
937	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
938		final Condition c = lock.writeLock().newCondition();
939	<	Thread t = new Thread(new Runnable() {
940	<	public void run() {
941	<	try {
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();
1106	<	threadShouldThrow();
1107	<	}
1108	<	catch(InterruptedException success) {
1109	<	}
1110	<	}
1111	<	});
939	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
940	>	public void realRun() throws InterruptedException {
941	>	lock.writeLock().lock();
942	>	java.util.Date d = new java.util.Date();
943	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
944	>	lock.writeLock().unlock();
945	>	}});
946
947	<	try {
948	<	t.start();
949	<	Thread.sleep(SHORT_DELAY_MS);
950	<	t.interrupt();
951	<	t.join(SHORT_DELAY_MS);
1118	<	assertFalse(t.isAlive());
1119	<	}
1120	<	catch (Exception ex) {
1121	<	unexpectedException();
1122	<	}
947	>	t.start();
948	>	Thread.sleep(SHORT_DELAY_MS);
949	>	t.interrupt();
950	>	t.join(SHORT_DELAY_MS);
951	>	assertFalse(t.isAlive());
952		}
953
954		/**
955		* signalAll wakes up all threads
956		*/
957	<	public void testSignalAll() {
958	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
957	>	public void testSignalAll() throws InterruptedException {
958	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
959		final Condition c = lock.writeLock().newCondition();
960	<	Thread t1 = new Thread(new Runnable() {
961	<	public void run() {
962	<	try {
963	<	lock.writeLock().lock();
964	<	c.await();
965	<	lock.writeLock().unlock();
1137	<	}
1138	<	catch(InterruptedException e) {
1139	<	threadUnexpectedException();
1140	<	}
1141	<	}
1142	<	});
1143	<
1144	<	Thread t2 = new Thread(new Runnable() {
1145	<	public void run() {
1146	<	try {
1147	<	lock.writeLock().lock();
1148	<	c.await();
1149	<	lock.writeLock().unlock();
1150	<	}
1151	<	catch(InterruptedException e) {
1152	<	threadUnexpectedException();
1153	<	}
1154	<	}
1155	<	});
960	>	Thread t1 = new Thread(new CheckedRunnable() {
961	>	public void realRun() throws InterruptedException {
962	>	lock.writeLock().lock();
963	>	c.await();
964	>	lock.writeLock().unlock();
965	>	}});
966
967	<	try {
968	<	t1.start();
969	<	t2.start();
970	<	Thread.sleep(SHORT_DELAY_MS);
971	<	lock.writeLock().lock();
972	<	c.signalAll();
973	<	lock.writeLock().unlock();
974	<	t1.join(SHORT_DELAY_MS);
975	<	t2.join(SHORT_DELAY_MS);
976	<	assertFalse(t1.isAlive());
977	<	assertFalse(t2.isAlive());
978	<	}
979	<	catch (Exception ex) {
980	<	unexpectedException();
981	<	}
967	>	Thread t2 = new Thread(new CheckedRunnable() {
968	>	public void realRun() throws InterruptedException {
969	>	lock.writeLock().lock();
970	>	c.await();
971	>	lock.writeLock().unlock();
972	>	}});
973	>
974	>	t1.start();
975	>	t2.start();
976	>	Thread.sleep(SHORT_DELAY_MS);
977	>	lock.writeLock().lock();
978	>	c.signalAll();
979	>	lock.writeLock().unlock();
980	>	t1.join(SHORT_DELAY_MS);
981	>	t2.join(SHORT_DELAY_MS);
982	>	assertFalse(t1.isAlive());
983	>	assertFalse(t2.isAlive());
984		}
985
986		/**
987		* A serialized lock deserializes as unlocked
988		*/
989	<	public void testSerialization() {
989	>	public void testSerialization() throws Exception {
990		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
991		l.readLock().lock();
992		l.readLock().unlock();
993
994	<	try {
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();
1192	<	r.readLock().unlock();
1193	<	} catch(Exception e){
1194	<	e.printStackTrace();
1195	<	unexpectedException();
1196	<	}
994	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
995	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
996	>	out.writeObject(l);
997	>	out.close();
998	>
999	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1000	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1001	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1002	>	r.readLock().lock();
1003	>	r.readLock().unlock();
1004		}
1005
1006		/**
1007		* hasQueuedThreads reports whether there are waiting threads
1008		*/
1009	<	public void testhasQueuedThreads() {
1010	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1009	>	public void testhasQueuedThreads() throws InterruptedException {
1010	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1011		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1012		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1013	<	try {
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();
1223	<	} catch(Exception e){
1224	<	unexpectedException();
1225	<	}
1226	<	}
1013	>	assertFalse(lock.hasQueuedThreads());
1014	>	lock.writeLock().lock();
1015	>	t1.start();
1016	>	Thread.sleep(SHORT_DELAY_MS);
1017	>	assertTrue(lock.hasQueuedThreads());
1018	>	t2.start();
1019	>	Thread.sleep(SHORT_DELAY_MS);
1020	>	assertTrue(lock.hasQueuedThreads());
1021	>	t1.interrupt();
1022	>	Thread.sleep(SHORT_DELAY_MS);
1023	>	assertTrue(lock.hasQueuedThreads());
1024	>	lock.writeLock().unlock();
1025	>	Thread.sleep(SHORT_DELAY_MS);
1026	>	assertFalse(lock.hasQueuedThreads());
1027	>	t1.join();
1028	>	t2.join();
1029	>	}
1030
1031		/**
1032		* hasQueuedThread(null) throws NPE
1033		*/
1034	<	public void testHasQueuedThreadNPE() {
1035	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1034	>	public void testHasQueuedThreadNPE() {
1035	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1036		try {
1037		sync.hasQueuedThread(null);
1038		shouldThrow();
1039	<	} catch (NullPointerException success) {
1237	<	}
1039	>	} catch (NullPointerException success) {}
1040		}
1041
1042		/**
1043		* hasQueuedThread reports whether a thread is queued.
1044		*/
1045	<	public void testHasQueuedThread() {
1046	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1045	>	public void testHasQueuedThread() throws InterruptedException {
1046	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1047		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1048		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1049	<	try {
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();
1269	<	} catch(Exception e){
1270	<	unexpectedException();
1271	<	}
1272	<	}
1049	>	assertFalse(sync.hasQueuedThread(t1));
1050	>	assertFalse(sync.hasQueuedThread(t2));
1051	>	sync.writeLock().lock();
1052	>	t1.start();
1053	>	Thread.sleep(SHORT_DELAY_MS);
1054	>	assertTrue(sync.hasQueuedThread(t1));
1055	>	t2.start();
1056	>	Thread.sleep(SHORT_DELAY_MS);
1057	>	assertTrue(sync.hasQueuedThread(t1));
1058	>	assertTrue(sync.hasQueuedThread(t2));
1059	>	t1.interrupt();
1060	>	Thread.sleep(SHORT_DELAY_MS);
1061	>	assertFalse(sync.hasQueuedThread(t1));
1062	>	assertTrue(sync.hasQueuedThread(t2));
1063	>	sync.writeLock().unlock();
1064	>	Thread.sleep(SHORT_DELAY_MS);
1065	>	assertFalse(sync.hasQueuedThread(t1));
1066	>	Thread.sleep(SHORT_DELAY_MS);
1067	>	assertFalse(sync.hasQueuedThread(t2));
1068	>	t1.join();
1069	>	t2.join();
1070	>	}
1071
1072
1073		/**
1074		* getQueueLength reports number of waiting threads
1075		*/
1076	<	public void testGetQueueLength() {
1077	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1076	>	public void testGetQueueLength() throws InterruptedException {
1077	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1078		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1079		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1080	<	try {
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();
1299	<	} catch(Exception e){
1300	<	unexpectedException();
1301	<	}
1302	<	}
1080	>	assertEquals(0, lock.getQueueLength());
1081	>	lock.writeLock().lock();
1082	>	t1.start();
1083	>	Thread.sleep(SHORT_DELAY_MS);
1084	>	assertEquals(1, lock.getQueueLength());
1085	>	t2.start();
1086	>	Thread.sleep(SHORT_DELAY_MS);
1087	>	assertEquals(2, lock.getQueueLength());
1088	>	t1.interrupt();
1089	>	Thread.sleep(SHORT_DELAY_MS);
1090	>	assertEquals(1, lock.getQueueLength());
1091	>	lock.writeLock().unlock();
1092	>	Thread.sleep(SHORT_DELAY_MS);
1093	>	assertEquals(0, lock.getQueueLength());
1094	>	t1.join();
1095	>	t2.join();
1096	>	}
1097
1098		/**
1099		* getQueuedThreads includes waiting threads
1100		*/
1101	<	public void testGetQueuedThreads() {
1102	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1101	>	public void testGetQueuedThreads() throws InterruptedException {
1102	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1103		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1104		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1105	<	try {
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();
1331	<	} catch(Exception e){
1332	<	unexpectedException();
1333	<	}
1334	<	}
1105	>	assertTrue(lock.getQueuedThreads().isEmpty());
1106	>	lock.writeLock().lock();
1107	>	assertTrue(lock.getQueuedThreads().isEmpty());
1108	>	t1.start();
1109	>	Thread.sleep(SHORT_DELAY_MS);
1110	>	assertTrue(lock.getQueuedThreads().contains(t1));
1111	>	t2.start();
1112	>	Thread.sleep(SHORT_DELAY_MS);
1113	>	assertTrue(lock.getQueuedThreads().contains(t1));
1114	>	assertTrue(lock.getQueuedThreads().contains(t2));
1115	>	t1.interrupt();
1116	>	Thread.sleep(SHORT_DELAY_MS);
1117	>	assertFalse(lock.getQueuedThreads().contains(t1));
1118	>	assertTrue(lock.getQueuedThreads().contains(t2));
1119	>	lock.writeLock().unlock();
1120	>	Thread.sleep(SHORT_DELAY_MS);
1121	>	assertTrue(lock.getQueuedThreads().isEmpty());
1122	>	t1.join();
1123	>	t2.join();
1124	>	}
1125
1126		/**
1127		* hasWaiters throws NPE if null
1128		*/
1129		public void testHasWaitersNPE() {
1130	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1130	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131		try {
1132		lock.hasWaiters(null);
1133		shouldThrow();
1134	<	} catch (NullPointerException success) {
1345	<	} catch (Exception ex) {
1346	<	unexpectedException();
1347	<	}
1134	>	} catch (NullPointerException success) {}
1135		}
1136
1137		/**
1138		* getWaitQueueLength throws NPE if null
1139		*/
1140		public void testGetWaitQueueLengthNPE() {
1141	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1141	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1142		try {
1143		lock.getWaitQueueLength(null);
1144		shouldThrow();
1145	<	} catch (NullPointerException success) {
1359	<	} catch (Exception ex) {
1360	<	unexpectedException();
1361	<	}
1145	>	} catch (NullPointerException success) {}
1146		}
1147
1148
#	Line 1366 | Line 1150 | public class ReentrantReadWriteLockTest
1150		* getWaitingThreads throws NPE if null
1151		*/
1152		public void testGetWaitingThreadsNPE() {
1153	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1153	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1154		try {
1155		lock.getWaitingThreads(null);
1156		shouldThrow();
1157	<	} catch (NullPointerException success) {
1374	<	} catch (Exception ex) {
1375	<	unexpectedException();
1376	<	}
1157	>	} catch (NullPointerException success) {}
1158		}
1159
1160		/**
1161		* hasWaiters throws IAE if not owned
1162		*/
1163		public void testHasWaitersIAE() {
1164	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1165	<	final Condition c = (lock.writeLock().newCondition());
1166	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1164	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1165	>	final Condition c = lock.writeLock().newCondition();
1166	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1167		try {
1168		lock2.hasWaiters(c);
1169		shouldThrow();
1170	<	} catch (IllegalArgumentException success) {
1390	<	} catch (Exception ex) {
1391	<	unexpectedException();
1392	<	}
1170	>	} catch (IllegalArgumentException success) {}
1171		}
1172
1173		/**
1174		* hasWaiters throws IMSE if not locked
1175		*/
1176		public void testHasWaitersIMSE() {
1177	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1178	<	final Condition c = (lock.writeLock().newCondition());
1177	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1178	>	final Condition c = lock.writeLock().newCondition();
1179		try {
1180		lock.hasWaiters(c);
1181		shouldThrow();
1182	<	} catch (IllegalMonitorStateException success) {
1405	<	} catch (Exception ex) {
1406	<	unexpectedException();
1407	<	}
1182	>	} catch (IllegalMonitorStateException success) {}
1183		}
1184
1185
#	Line 1412 | Line 1187 | public class ReentrantReadWriteLockTest
1187		* getWaitQueueLength throws IAE if not owned
1188		*/
1189		public void testGetWaitQueueLengthIAE() {
1190	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1191	<	final Condition c = (lock.writeLock().newCondition());
1192	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1190	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1191	>	final Condition c = lock.writeLock().newCondition();
1192	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1193		try {
1194		lock2.getWaitQueueLength(c);
1195		shouldThrow();
1196	<	} catch (IllegalArgumentException success) {
1422	<	} catch (Exception ex) {
1423	<	unexpectedException();
1424	<	}
1196	>	} catch (IllegalArgumentException success) {}
1197		}
1198
1199		/**
1200		* getWaitQueueLength throws IMSE if not locked
1201		*/
1202		public void testGetWaitQueueLengthIMSE() {
1203	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1204	<	final Condition c = (lock.writeLock().newCondition());
1203	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1204	>	final Condition c = lock.writeLock().newCondition();
1205		try {
1206		lock.getWaitQueueLength(c);
1207		shouldThrow();
1208	<	} catch (IllegalMonitorStateException success) {
1437	<	} catch (Exception ex) {
1438	<	unexpectedException();
1439	<	}
1208	>	} catch (IllegalMonitorStateException success) {}
1209		}
1210
1211
#	Line 1444 | Line 1213 | public class ReentrantReadWriteLockTest
1213		* getWaitingThreads throws IAE if not owned
1214		*/
1215		public void testGetWaitingThreadsIAE() {
1216	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1217	<	final Condition c = (lock.writeLock().newCondition());
1218	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1216	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1217	>	final Condition c = lock.writeLock().newCondition();
1218	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1219		try {
1220		lock2.getWaitingThreads(c);
1221		shouldThrow();
1222	<	} catch (IllegalArgumentException success) {
1454	<	} catch (Exception ex) {
1455	<	unexpectedException();
1456	<	}
1222	>	} catch (IllegalArgumentException success) {}
1223		}
1224
1225		/**
1226		* getWaitingThreads throws IMSE if not locked
1227		*/
1228		public void testGetWaitingThreadsIMSE() {
1229	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1230	<	final Condition c = (lock.writeLock().newCondition());
1229	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1230	>	final Condition c = lock.writeLock().newCondition();
1231		try {
1232		lock.getWaitingThreads(c);
1233		shouldThrow();
1234	<	} catch (IllegalMonitorStateException success) {
1469	<	} catch (Exception ex) {
1470	<	unexpectedException();
1471	<	}
1234	>	} catch (IllegalMonitorStateException success) {}
1235		}
1236
1237
1238		/**
1239		* hasWaiters returns true when a thread is waiting, else false
1240		*/
1241	<	public void testHasWaiters() {
1242	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1243	<	final Condition c = (lock.writeLock().newCondition());
1244	<	Thread t = new Thread(new Runnable() {
1245	<	public void run() {
1246	<	try {
1247	<	lock.writeLock().lock();
1248	<	threadAssertFalse(lock.hasWaiters(c));
1249	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1250	<	c.await();
1251	<	lock.writeLock().unlock();
1489	<	}
1490	<	catch(InterruptedException e) {
1491	<	threadUnexpectedException();
1492	<	}
1493	<	}
1494	<	});
1241	>	public void testHasWaiters() throws InterruptedException {
1242	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1243	>	final Condition c = lock.writeLock().newCondition();
1244	>	Thread t = new Thread(new CheckedRunnable() {
1245	>	public void realRun() throws InterruptedException {
1246	>	lock.writeLock().lock();
1247	>	threadAssertFalse(lock.hasWaiters(c));
1248	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1249	>	c.await();
1250	>	lock.writeLock().unlock();
1251	>	}});
1252
1253	<	try {
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);
1510	<	assertFalse(t.isAlive());
1511	<	}
1512	<	catch (Exception ex) {
1513	<	unexpectedException();
1514	<	}
1253	>	t.start();
1254	>	Thread.sleep(SHORT_DELAY_MS);
1255	>	lock.writeLock().lock();
1256	>	assertTrue(lock.hasWaiters(c));
1257	>	assertEquals(1, lock.getWaitQueueLength(c));
1258	>	c.signal();
1259	>	lock.writeLock().unlock();
1260	>	Thread.sleep(SHORT_DELAY_MS);
1261	>	lock.writeLock().lock();
1262	>	assertFalse(lock.hasWaiters(c));
1263	>	assertEquals(0, lock.getWaitQueueLength(c));
1264	>	lock.writeLock().unlock();
1265	>	t.join(SHORT_DELAY_MS);
1266	>	assertFalse(t.isAlive());
1267		}
1268
1269		/**
1270		* getWaitQueueLength returns number of waiting threads
1271		*/
1272	<	public void testGetWaitQueueLength() {
1273	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1274	<	final Condition c = (lock.writeLock().newCondition());
1275	<	Thread t = new Thread(new Runnable() {
1276	<	public void run() {
1277	<	try {
1278	<	lock.writeLock().lock();
1279	<	threadAssertFalse(lock.hasWaiters(c));
1280	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1281	<	c.await();
1282	<	lock.writeLock().unlock();
1531	<	}
1532	<	catch(InterruptedException e) {
1533	<	threadUnexpectedException();
1534	<	}
1535	<	}
1536	<	});
1272	>	public void testGetWaitQueueLength() throws InterruptedException {
1273	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1274	>	final Condition c = lock.writeLock().newCondition();
1275	>	Thread t = new Thread(new CheckedRunnable() {
1276	>	public void realRun() throws InterruptedException {
1277	>	lock.writeLock().lock();
1278	>	threadAssertFalse(lock.hasWaiters(c));
1279	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1280	>	c.await();
1281	>	lock.writeLock().unlock();
1282	>	}});
1283
1284	<	try {
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);
1552	<	assertFalse(t.isAlive());
1553	<	}
1554	<	catch (Exception ex) {
1555	<	unexpectedException();
1556	<	}
1284	>	t.start();
1285	>	Thread.sleep(SHORT_DELAY_MS);
1286	>	lock.writeLock().lock();
1287	>	assertTrue(lock.hasWaiters(c));
1288	>	assertEquals(1, lock.getWaitQueueLength(c));
1289	>	c.signal();
1290	>	lock.writeLock().unlock();
1291	>	Thread.sleep(SHORT_DELAY_MS);
1292	>	lock.writeLock().lock();
1293	>	assertFalse(lock.hasWaiters(c));
1294	>	assertEquals(0, lock.getWaitQueueLength(c));
1295	>	lock.writeLock().unlock();
1296	>	t.join(SHORT_DELAY_MS);
1297	>	assertFalse(t.isAlive());
1298		}
1299
1300
1301		/**
1302		* getWaitingThreads returns only and all waiting threads
1303		*/
1304	<	public void testGetWaitingThreads() {
1305	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1304	>	public void testGetWaitingThreads() throws InterruptedException {
1305	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1306		final Condition c = lock.writeLock().newCondition();
1307	<	Thread t1 = new Thread(new Runnable() {
1308	<	public void run() {
1309	<	try {
1310	<	lock.writeLock().lock();
1311	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1312	<	c.await();
1313	<	lock.writeLock().unlock();
1573	<	}
1574	<	catch(InterruptedException e) {
1575	<	threadUnexpectedException();
1576	<	}
1577	<	}
1578	<	});
1579	<
1580	<	Thread t2 = new Thread(new Runnable() {
1581	<	public void run() {
1582	<	try {
1583	<	lock.writeLock().lock();
1584	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1585	<	c.await();
1586	<	lock.writeLock().unlock();
1587	<	}
1588	<	catch(InterruptedException e) {
1589	<	threadUnexpectedException();
1590	<	}
1591	<	}
1592	<	});
1307	>	Thread t1 = new Thread(new CheckedRunnable() {
1308	>	public void realRun() throws InterruptedException {
1309	>	lock.writeLock().lock();
1310	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1311	>	c.await();
1312	>	lock.writeLock().unlock();
1313	>	}});
1314
1315	<	try {
1316	<	lock.writeLock().lock();
1317	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1318	<	lock.writeLock().unlock();
1319	<	t1.start();
1320	<	Thread.sleep(SHORT_DELAY_MS);
1321	<	t2.start();
1322	<	Thread.sleep(SHORT_DELAY_MS);
1323	<	lock.writeLock().lock();
1324	<	assertTrue(lock.hasWaiters(c));
1325	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1326	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1327	<	c.signalAll();
1328	<	lock.writeLock().unlock();
1329	<	Thread.sleep(SHORT_DELAY_MS);
1330	<	lock.writeLock().lock();
1331	<	assertFalse(lock.hasWaiters(c));
1332	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1333	<	lock.writeLock().unlock();
1334	<	t1.join(SHORT_DELAY_MS);
1335	<	t2.join(SHORT_DELAY_MS);
1336	<	assertFalse(t1.isAlive());
1337	<	assertFalse(t2.isAlive());
1338	<	}
1339	<	catch (Exception ex) {
1340	<	unexpectedException();
1341	<	}
1315	>	Thread t2 = new Thread(new CheckedRunnable() {
1316	>	public void realRun() throws InterruptedException {
1317	>	lock.writeLock().lock();
1318	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1319	>	c.await();
1320	>	lock.writeLock().unlock();
1321	>	}});
1322	>
1323	>	lock.writeLock().lock();
1324	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1325	>	lock.writeLock().unlock();
1326	>	t1.start();
1327	>	Thread.sleep(SHORT_DELAY_MS);
1328	>	t2.start();
1329	>	Thread.sleep(SHORT_DELAY_MS);
1330	>	lock.writeLock().lock();
1331	>	assertTrue(lock.hasWaiters(c));
1332	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1333	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1334	>	c.signalAll();
1335	>	lock.writeLock().unlock();
1336	>	Thread.sleep(SHORT_DELAY_MS);
1337	>	lock.writeLock().lock();
1338	>	assertFalse(lock.hasWaiters(c));
1339	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1340	>	lock.writeLock().unlock();
1341	>	t1.join(SHORT_DELAY_MS);
1342	>	t2.join(SHORT_DELAY_MS);
1343	>	assertFalse(t1.isAlive());
1344	>	assertFalse(t2.isAlive());
1345		}
1346
1347		/**

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