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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.23 by dl, Mon Aug 1 19:53:01 2005 UTC vs.
Revision 1.51 by jsr166, Mon May 2 00:14:09 2011 UTC

#	Line 1 | Line 1
1		/*
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.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
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	+	* Releases lock, checking that it had a hold count of 1.
63	+	*/
64	+	void releaseLock(ReentrantReadWriteLock.WriteLock lock) {
65	+	assertTrue(lock.isHeldByCurrentThread());
66	+	lock.unlock();
67	+	assertFalse(lock.isHeldByCurrentThread());
68	+	}
69	+
70	+	/**
71		* Constructor sets given fairness, and is in unlocked state
72		*/
73	<	public void testConstructor() {
74	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
73	>	public void testConstructor() {
74	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
75		assertFalse(rl.isFair());
76		assertFalse(rl.isWriteLocked());
77		assertEquals(0, rl.getReadLockCount());
78	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
78	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
79		assertTrue(r2.isFair());
80		assertFalse(r2.isWriteLocked());
81		assertEquals(0, r2.getReadLockCount());
82	+	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
83	+	assertFalse(r3.isFair());
84	+	assertFalse(r3.isWriteLocked());
85	+	assertEquals(0, r3.getReadLockCount());
86		}
87
88		/**
89		* write-locking and read-locking an unlocked lock succeed
90		*/
91	<	public void testLock() {
92	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
91	>	public void testLock() {
92	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
93		rl.writeLock().lock();
94		assertTrue(rl.isWriteLocked());
95		assertTrue(rl.isWriteLockedByCurrentThread());
96	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
97		assertEquals(0, rl.getReadLockCount());
98		rl.writeLock().unlock();
99		assertFalse(rl.isWriteLocked());
100		assertFalse(rl.isWriteLockedByCurrentThread());
101	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
102		assertEquals(0, rl.getReadLockCount());
103		rl.readLock().lock();
104		assertFalse(rl.isWriteLocked());
#	Line 103 | Line 114 | public class ReentrantReadWriteLockTest
114		/**
115		* locking an unlocked fair lock succeeds
116		*/
117	<	public void testFairLock() {
118	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
117	>	public void testFairLock() {
118	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
119		rl.writeLock().lock();
120		assertTrue(rl.isWriteLocked());
121		assertTrue(rl.isWriteLockedByCurrentThread());
122	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
123		assertEquals(0, rl.getReadLockCount());
124		rl.writeLock().unlock();
125		assertFalse(rl.isWriteLocked());
126		assertFalse(rl.isWriteLockedByCurrentThread());
127	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
128		assertEquals(0, rl.getReadLockCount());
129		rl.readLock().lock();
130		assertFalse(rl.isWriteLocked());
#	Line 127 | Line 140 | public class ReentrantReadWriteLockTest
140		* getWriteHoldCount returns number of recursive holds
141		*/
142		public void testGetWriteHoldCount() {
143	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
144	<	for(int i = 1; i <= SIZE; i++) {
145	<	lock.writeLock().lock();
146	<	assertEquals(i,lock.getWriteHoldCount());
147	<	}
148	<	for(int i = SIZE; i > 0; i--) {
149	<	lock.writeLock().unlock();
150	<	assertEquals(i-1,lock.getWriteHoldCount());
151	<	}
143	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
144	>	for (int i = 1; i <= SIZE; i++) {
145	>	lock.writeLock().lock();
146	>	assertEquals(i,lock.getWriteHoldCount());
147	>	}
148	>	for (int i = SIZE; i > 0; i--) {
149	>	lock.writeLock().unlock();
150	>	assertEquals(i-1,lock.getWriteHoldCount());
151	>	}
152	>	}
153	>
154	>	/**
155	>	* WriteLock.getHoldCount returns number of recursive holds
156	>	*/
157	>	public void testGetHoldCount() {
158	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
159	>	for (int i = 1; i <= SIZE; i++) {
160	>	lock.writeLock().lock();
161	>	assertEquals(i,lock.writeLock().getHoldCount());
162	>	}
163	>	for (int i = SIZE; i > 0; i--) {
164	>	lock.writeLock().unlock();
165	>	assertEquals(i-1,lock.writeLock().getHoldCount());
166	>	}
167		}
168
169		/**
170		* getReadHoldCount returns number of recursive holds
171		*/
172		public void testGetReadHoldCount() {
173	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
174	<	for(int i = 1; i <= SIZE; i++) {
175	<	lock.readLock().lock();
176	<	assertEquals(i,lock.getReadHoldCount());
177	<	}
178	<	for(int i = SIZE; i > 0; i--) {
179	<	lock.readLock().unlock();
180	<	assertEquals(i-1,lock.getReadHoldCount());
181	<	}
173	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
174	>	for (int i = 1; i <= SIZE; i++) {
175	>	lock.readLock().lock();
176	>	assertEquals(i,lock.getReadHoldCount());
177	>	}
178	>	for (int i = SIZE; i > 0; i--) {
179	>	lock.readLock().unlock();
180	>	assertEquals(i-1,lock.getReadHoldCount());
181	>	}
182		}
183	<
183	>
184
185		/**
186		* write-unlocking an unlocked lock throws IllegalMonitorStateException
187		*/
188	<	public void testUnlock_IllegalMonitorStateException() {
189	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
190	<	try {
191	<	rl.writeLock().unlock();
192	<	shouldThrow();
193	<	} catch(IllegalMonitorStateException success){}
188	>	public void testUnlock_IllegalMonitorStateException() {
189	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
190	>	try {
191	>	rl.writeLock().unlock();
192	>	shouldThrow();
193	>	} catch (IllegalMonitorStateException success) {}
194		}
195
196
197		/**
198		* write-lockInterruptibly is interruptible
199		*/
200	<	public void testWriteLockInterruptibly_Interrupted() {
201	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
202	<	Thread t = new Thread(new Runnable() {
203	<	public void run() {
204	<	try {
205	<	lock.writeLock().lockInterruptibly();
206	<	lock.writeLock().unlock();
207	<	lock.writeLock().lockInterruptibly();
208	<	lock.writeLock().unlock();
209	<	} catch(InterruptedException success){}
210	<	}
211	<	});
212	<	try {
185	<	lock.writeLock().lock();
186	<	t.start();
187	<	t.interrupt();
188	<	lock.writeLock().unlock();
189	<	t.join();
190	<	} catch(Exception e){
191	<	unexpectedException();
192	<	}
193	<	}
200	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
201	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
202	>	lock.writeLock().lock();
203	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
204	>	public void realRun() throws InterruptedException {
205	>	lock.writeLock().lockInterruptibly();
206	>	}});
207	>
208	>	Thread.sleep(SHORT_DELAY_MS);
209	>	t.interrupt();
210	>	t.join();
211	>	releaseLock(lock.writeLock());
212	>	}
213
214		/**
215		* timed write-tryLock is interruptible
216		*/
217	<	public void testWriteTryLock_Interrupted() {
218	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
219	<	lock.writeLock().lock();
220	<	Thread t = new Thread(new Runnable() {
221	<	public void run() {
222	<	try {
223	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
224	<	} catch(InterruptedException success){}
225	<	}
226	<	});
227	<	try {
228	<	t.start();
210	<	t.interrupt();
211	<	lock.writeLock().unlock();
212	<	t.join();
213	<	} catch(Exception e){
214	<	unexpectedException();
215	<	}
217	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
218	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
219	>	lock.writeLock().lock();
220	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
221	>	public void realRun() throws InterruptedException {
222	>	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
223	>	}});
224	>
225	>	Thread.sleep(SHORT_DELAY_MS);
226	>	t.interrupt();
227	>	t.join();
228	>	releaseLock(lock.writeLock());
229		}
230
231		/**
232		* read-lockInterruptibly is interruptible
233		*/
234	<	public void testReadLockInterruptibly_Interrupted() {
235	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
236	<	lock.writeLock().lock();
237	<	Thread t = new Thread(new Runnable() {
238	<	public void run() {
239	<	try {
240	<	lock.readLock().lockInterruptibly();
241	<	} catch(InterruptedException success){}
242	<	}
243	<	});
244	<	try {
245	<	t.start();
246	<	t.interrupt();
234	<	lock.writeLock().unlock();
235	<	t.join();
236	<	} catch(Exception e){
237	<	unexpectedException();
238	<	}
239	<	}
234	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
235	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
236	>	lock.writeLock().lock();
237	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
238	>	public void realRun() throws InterruptedException {
239	>	lock.readLock().lockInterruptibly();
240	>	}});
241	>
242	>	Thread.sleep(SHORT_DELAY_MS);
243	>	t.interrupt();
244	>	t.join();
245	>	releaseLock(lock.writeLock());
246	>	}
247
248		/**
249		* timed read-tryLock is interruptible
250		*/
251	<	public void testReadTryLock_Interrupted() {
252	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	<	lock.writeLock().lock();
254	<	Thread t = new Thread(new Runnable() {
255	<	public void run() {
256	<	try {
257	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
258	<	threadShouldThrow();
259	<	} catch(InterruptedException success){}
260	<	}
261	<	});
262	<	try {
256	<	t.start();
257	<	t.interrupt();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
251	>	public void testReadTryLock_Interrupted() throws InterruptedException {
252	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	>	lock.writeLock().lock();
254	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
255	>	public void realRun() throws InterruptedException {
256	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
257	>	}});
258	>
259	>	Thread.sleep(SHORT_DELAY_MS);
260	>	t.interrupt();
261	>	t.join();
262	>	releaseLock(lock.writeLock());
263		}
264
265	<
265	>
266		/**
267		* write-tryLock fails if locked
268		*/
269	<	public void testWriteTryLockWhenLocked() {
270	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
271	<	lock.writeLock().lock();
272	<	Thread t = new Thread(new Runnable() {
273	<	public void run() {
274	<	threadAssertFalse(lock.writeLock().tryLock());
275	<	}
276	<	});
277	<	try {
278	<	t.start();
279	<	t.join();
279	<	lock.writeLock().unlock();
280	<	} catch(Exception e){
281	<	unexpectedException();
282	<	}
283	<	}
269	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
270	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
271	>	lock.writeLock().lock();
272	>	Thread t = newStartedThread(new CheckedRunnable() {
273	>	public void realRun() {
274	>	assertFalse(lock.writeLock().tryLock());
275	>	}});
276	>
277	>	t.join();
278	>	lock.writeLock().unlock();
279	>	}
280
281		/**
282		* read-tryLock fails if locked
283		*/
284	<	public void testReadTryLockWhenLocked() {
285	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	<	lock.writeLock().lock();
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	threadAssertFalse(lock.readLock().tryLock());
290	<	}
291	<	});
292	<	try {
293	<	t.start();
294	<	t.join();
299	<	lock.writeLock().unlock();
300	<	} catch(Exception e){
301	<	unexpectedException();
302	<	}
303	<	}
284	>	public void testReadTryLockWhenLocked() throws InterruptedException {
285	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	>	lock.writeLock().lock();
287	>	Thread t = newStartedThread(new CheckedRunnable() {
288	>	public void realRun() {
289	>	assertFalse(lock.readLock().tryLock());
290	>	}});
291	>
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() {
303	<	public void run() {
304	<	threadAssertTrue(lock.readLock().tryLock());
305	<	lock.readLock().unlock();
306	<	}
307	<	});
308	<	try {
309	<	t.start();
310	<	t.join();
320	<	lock.readLock().unlock();
321	<	} catch(Exception e){
322	<	unexpectedException();
323	<	}
324	<	}
299	>	public void testMultipleReadLocks() throws InterruptedException {
300	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301	>	lock.readLock().lock();
302	>	Thread t = newStartedThread(new CheckedRunnable() {
303	>	public void realRun() {
304	>	assertTrue(lock.readLock().tryLock());
305	>	lock.readLock().unlock();
306	>	}});
307	>
308	>	t.join();
309	>	lock.readLock().unlock();
310	>	}
311
312		/**
313		* A writelock succeeds after reading threads unlock
314		*/
315	<	public void testWriteAfterMultipleReadLocks() {
316	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	<	lock.readLock().lock();
318	<	Thread t1 = new Thread(new Runnable() {
319	<	public void run() {
320	<	lock.readLock().lock();
321	<	lock.readLock().unlock();
322	<	}
323	<	});
324	<	Thread t2 = new Thread(new Runnable() {
325	<	public void run() {
326	<	lock.writeLock().lock();
327	<	lock.writeLock().unlock();
342	<	}
343	<	});
315	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
316	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	>	lock.readLock().lock();
318	>	Thread t1 = newStartedThread(new CheckedRunnable() {
319	>	public void realRun() {
320	>	lock.readLock().lock();
321	>	lock.readLock().unlock();
322	>	}});
323	>	Thread t2 = newStartedThread(new CheckedRunnable() {
324	>	public void realRun() {
325	>	lock.writeLock().lock();
326	>	lock.writeLock().unlock();
327	>	}});
328
329	<	try {
330	<	t1.start();
331	<	t2.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
333	<	lock.readLock().unlock();
334	<	t1.join(MEDIUM_DELAY_MS);
335	<	t2.join(MEDIUM_DELAY_MS);
352	<	assertTrue(!t1.isAlive());
353	<	assertTrue(!t2.isAlive());
354	<
355	<	} catch(Exception e){
356	<	unexpectedException();
357	<	}
358	<	}
329	>	Thread.sleep(SHORT_DELAY_MS);
330	>	lock.readLock().unlock();
331	>	t1.join(MEDIUM_DELAY_MS);
332	>	t2.join(MEDIUM_DELAY_MS);
333	>	assertTrue(!t1.isAlive());
334	>	assertTrue(!t2.isAlive());
335	>	}
336
337		/**
338		* Readlocks succeed after a writing thread unlocks
339		*/
340	<	public void testReadAfterWriteLock() {
341	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
342	<	lock.writeLock().lock();
343	<	Thread t1 = new Thread(new Runnable() {
344	<	public void run() {
345	<	lock.readLock().lock();
346	<	lock.readLock().unlock();
347	<	}
348	<	});
349	<	Thread t2 = new Thread(new Runnable() {
350	<	public void run() {
351	<	lock.readLock().lock();
352	<	lock.readLock().unlock();
376	<	}
377	<	});
340	>	public void testReadAfterWriteLock() throws InterruptedException {
341	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
342	>	lock.writeLock().lock();
343	>	Thread t1 = newStartedThread(new CheckedRunnable() {
344	>	public void realRun() {
345	>	lock.readLock().lock();
346	>	lock.readLock().unlock();
347	>	}});
348	>	Thread t2 = newStartedThread(new CheckedRunnable() {
349	>	public void realRun() {
350	>	lock.readLock().lock();
351	>	lock.readLock().unlock();
352	>	}});
353
354	<	try {
355	<	t1.start();
356	<	t2.start();
357	<	Thread.sleep(SHORT_DELAY_MS);
358	<	lock.writeLock().unlock();
359	<	t1.join(MEDIUM_DELAY_MS);
360	<	t2.join(MEDIUM_DELAY_MS);
386	<	assertTrue(!t1.isAlive());
387	<	assertTrue(!t2.isAlive());
388	<
389	<	} catch(Exception e){
390	<	unexpectedException();
391	<	}
392	<	}
354	>	Thread.sleep(SHORT_DELAY_MS);
355	>	lock.writeLock().unlock();
356	>	t1.join(MEDIUM_DELAY_MS);
357	>	t2.join(MEDIUM_DELAY_MS);
358	>	assertTrue(!t1.isAlive());
359	>	assertTrue(!t2.isAlive());
360	>	}
361
362		/**
363		* Read trylock succeeds if write locked by current thread
364		*/
365	<	public void testReadHoldingWriteLock() {
366	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
367	<	lock.writeLock().lock();
365	>	public void testReadHoldingWriteLock() {
366	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
367	>	lock.writeLock().lock();
368		assertTrue(lock.readLock().tryLock());
369		lock.readLock().unlock();
370		lock.writeLock().unlock();
371	<	}
371	>	}
372
373		/**
374		* Read lock succeeds if write locked by current thread even if
375		* other threads are waiting for readlock
376		*/
377	<	public void testReadHoldingWriteLock2() {
378	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
379	<	lock.writeLock().lock();
380	<	Thread t1 = new Thread(new Runnable() {
381	<	public void run() {
382	<	lock.readLock().lock();
383	<	lock.readLock().unlock();
384	<	}
385	<	});
386	<	Thread t2 = new Thread(new Runnable() {
387	<	public void run() {
388	<	lock.readLock().lock();
389	<	lock.readLock().unlock();
422	<	}
423	<	});
377	>	public void testReadHoldingWriteLock2() throws InterruptedException {
378	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
379	>	lock.writeLock().lock();
380	>	Thread t1 = newStartedThread(new CheckedRunnable() {
381	>	public void realRun() {
382	>	lock.readLock().lock();
383	>	lock.readLock().unlock();
384	>	}});
385	>	Thread t2 = newStartedThread(new CheckedRunnable() {
386	>	public void realRun() {
387	>	lock.readLock().lock();
388	>	lock.readLock().unlock();
389	>	}});
390
391	<	try {
392	<	t1.start();
393	<	t2.start();
394	<	lock.readLock().lock();
395	<	lock.readLock().unlock();
396	<	Thread.sleep(SHORT_DELAY_MS);
397	<	lock.readLock().lock();
398	<	lock.readLock().unlock();
399	<	lock.writeLock().unlock();
400	<	t1.join(MEDIUM_DELAY_MS);
401	<	t2.join(MEDIUM_DELAY_MS);
436	<	assertTrue(!t1.isAlive());
437	<	assertTrue(!t2.isAlive());
438	<
439	<	} catch(Exception e){
440	<	unexpectedException();
441	<	}
442	<	}
391	>	lock.readLock().lock();
392	>	lock.readLock().unlock();
393	>	Thread.sleep(SHORT_DELAY_MS);
394	>	lock.readLock().lock();
395	>	lock.readLock().unlock();
396	>	lock.writeLock().unlock();
397	>	t1.join(MEDIUM_DELAY_MS);
398	>	t2.join(MEDIUM_DELAY_MS);
399	>	assertTrue(!t1.isAlive());
400	>	assertTrue(!t2.isAlive());
401	>	}
402
403		/**
404	<	*  Read lock succeeds if write locked by current thread even if
404	>	* Read lock succeeds if write locked by current thread even if
405		* other threads are waiting for writelock
406		*/
407	<	public void testReadHoldingWriteLock3() {
408	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409	<	lock.writeLock().lock();
410	<	Thread t1 = new Thread(new Runnable() {
411	<	public void run() {
412	<	lock.writeLock().lock();
413	<	lock.writeLock().unlock();
414	<	}
415	<	});
416	<	Thread t2 = new Thread(new Runnable() {
417	<	public void run() {
418	<	lock.writeLock().lock();
419	<	lock.writeLock().unlock();
461	<	}
462	<	});
407	>	public void testReadHoldingWriteLock3() throws InterruptedException {
408	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409	>	lock.writeLock().lock();
410	>	Thread t1 = newStartedThread(new CheckedRunnable() {
411	>	public void realRun() {
412	>	lock.writeLock().lock();
413	>	lock.writeLock().unlock();
414	>	}});
415	>	Thread t2 = newStartedThread(new CheckedRunnable() {
416	>	public void realRun() {
417	>	lock.writeLock().lock();
418	>	lock.writeLock().unlock();
419	>	}});
420
421	<	try {
422	<	t1.start();
423	<	t2.start();
424	<	lock.readLock().lock();
425	<	lock.readLock().unlock();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	lock.readLock().lock();
428	<	lock.readLock().unlock();
429	<	lock.writeLock().unlock();
430	<	t1.join(MEDIUM_DELAY_MS);
431	<	t2.join(MEDIUM_DELAY_MS);
475	<	assertTrue(!t1.isAlive());
476	<	assertTrue(!t2.isAlive());
477	<
478	<	} catch(Exception e){
479	<	unexpectedException();
480	<	}
481	<	}
421	>	lock.readLock().lock();
422	>	lock.readLock().unlock();
423	>	Thread.sleep(SHORT_DELAY_MS);
424	>	lock.readLock().lock();
425	>	lock.readLock().unlock();
426	>	lock.writeLock().unlock();
427	>	t1.join(MEDIUM_DELAY_MS);
428	>	t2.join(MEDIUM_DELAY_MS);
429	>	assertTrue(!t1.isAlive());
430	>	assertTrue(!t2.isAlive());
431	>	}
432
433
434		/**
435	<	*  Write lock succeeds if write locked by current thread even if
435	>	* Write lock succeeds if write locked by current thread even if
436		* other threads are waiting for writelock
437		*/
438	<	public void testWriteHoldingWriteLock4() {
439	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	<	lock.writeLock().lock();
441	<	Thread t1 = new Thread(new Runnable() {
442	<	public void run() {
443	<	lock.writeLock().lock();
444	<	lock.writeLock().unlock();
445	<	}
446	<	});
447	<	Thread t2 = new Thread(new Runnable() {
448	<	public void run() {
449	<	lock.writeLock().lock();
450	<	lock.writeLock().unlock();
501	<	}
502	<	});
438	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
439	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	>	lock.writeLock().lock();
441	>	Thread t1 = newStartedThread(new CheckedRunnable() {
442	>	public void realRun() {
443	>	lock.writeLock().lock();
444	>	lock.writeLock().unlock();
445	>	}});
446	>	Thread t2 = newStartedThread(new CheckedRunnable() {
447	>	public void realRun() {
448	>	lock.writeLock().lock();
449	>	lock.writeLock().unlock();
450	>	}});
451
452	<	try {
453	<	t1.start();
454	<	t2.start();
455	<	lock.writeLock().lock();
456	<	lock.writeLock().unlock();
457	<	Thread.sleep(SHORT_DELAY_MS);
458	<	lock.writeLock().lock();
459	<	lock.writeLock().unlock();
460	<	lock.writeLock().unlock();
461	<	t1.join(MEDIUM_DELAY_MS);
462	<	t2.join(MEDIUM_DELAY_MS);
515	<	assertTrue(!t1.isAlive());
516	<	assertTrue(!t2.isAlive());
517	<
518	<	} catch(Exception e){
519	<	unexpectedException();
520	<	}
521	<	}
452	>	lock.writeLock().lock();
453	>	lock.writeLock().unlock();
454	>	Thread.sleep(SHORT_DELAY_MS);
455	>	lock.writeLock().lock();
456	>	lock.writeLock().unlock();
457	>	lock.writeLock().unlock();
458	>	t1.join(MEDIUM_DELAY_MS);
459	>	t2.join(MEDIUM_DELAY_MS);
460	>	assertTrue(!t1.isAlive());
461	>	assertTrue(!t2.isAlive());
462	>	}
463
464
465		/**
466		* Fair Read trylock succeeds if write locked by current thread
467		*/
468	<	public void testReadHoldingWriteLockFair() {
469	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
470	<	lock.writeLock().lock();
468	>	public void testReadHoldingWriteLockFair() {
469	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
470	>	lock.writeLock().lock();
471		assertTrue(lock.readLock().tryLock());
472		lock.readLock().unlock();
473		lock.writeLock().unlock();
474	<	}
474	>	}
475
476		/**
477		* Fair Read lock succeeds if write locked by current thread even if
478		* other threads are waiting for readlock
479		*/
480	<	public void testReadHoldingWriteLockFair2() {
481	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	<	lock.writeLock().lock();
483	<	Thread t1 = new Thread(new Runnable() {
484	<	public void run() {
485	<	lock.readLock().lock();
486	<	lock.readLock().unlock();
487	<	}
488	<	});
489	<	Thread t2 = new Thread(new Runnable() {
490	<	public void run() {
491	<	lock.readLock().lock();
492	<	lock.readLock().unlock();
552	<	}
553	<	});
480	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
481	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	>	lock.writeLock().lock();
483	>	Thread t1 = newStartedThread(new CheckedRunnable() {
484	>	public void realRun() {
485	>	lock.readLock().lock();
486	>	lock.readLock().unlock();
487	>	}});
488	>	Thread t2 = newStartedThread(new CheckedRunnable() {
489	>	public void realRun() {
490	>	lock.readLock().lock();
491	>	lock.readLock().unlock();
492	>	}});
493
494	<	try {
495	<	t1.start();
496	<	t2.start();
497	<	lock.readLock().lock();
498	<	lock.readLock().unlock();
499	<	Thread.sleep(SHORT_DELAY_MS);
500	<	lock.readLock().lock();
501	<	lock.readLock().unlock();
502	<	lock.writeLock().unlock();
503	<	t1.join(MEDIUM_DELAY_MS);
504	<	t2.join(MEDIUM_DELAY_MS);
566	<	assertTrue(!t1.isAlive());
567	<	assertTrue(!t2.isAlive());
568	<
569	<	} catch(Exception e){
570	<	unexpectedException();
571	<	}
572	<	}
494	>	lock.readLock().lock();
495	>	lock.readLock().unlock();
496	>	Thread.sleep(SHORT_DELAY_MS);
497	>	lock.readLock().lock();
498	>	lock.readLock().unlock();
499	>	lock.writeLock().unlock();
500	>	t1.join(MEDIUM_DELAY_MS);
501	>	t2.join(MEDIUM_DELAY_MS);
502	>	assertTrue(!t1.isAlive());
503	>	assertTrue(!t2.isAlive());
504	>	}
505
506
507		/**
508		* Fair Read lock succeeds if write locked by current thread even if
509		* other threads are waiting for writelock
510		*/
511	<	public void testReadHoldingWriteLockFair3() {
512	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
513	<	lock.writeLock().lock();
514	<	Thread t1 = new Thread(new Runnable() {
515	<	public void run() {
516	<	lock.writeLock().lock();
517	<	lock.writeLock().unlock();
518	<	}
519	<	});
520	<	Thread t2 = new Thread(new Runnable() {
521	<	public void run() {
522	<	lock.writeLock().lock();
523	<	lock.writeLock().unlock();
592	<	}
593	<	});
511	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
512	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
513	>	lock.writeLock().lock();
514	>	Thread t1 = newStartedThread(new CheckedRunnable() {
515	>	public void realRun() {
516	>	lock.writeLock().lock();
517	>	lock.writeLock().unlock();
518	>	}});
519	>	Thread t2 = newStartedThread(new CheckedRunnable() {
520	>	public void realRun() {
521	>	lock.writeLock().lock();
522	>	lock.writeLock().unlock();
523	>	}});
524
525	<	try {
526	<	t1.start();
527	<	t2.start();
528	<	lock.readLock().lock();
529	<	lock.readLock().unlock();
530	<	Thread.sleep(SHORT_DELAY_MS);
531	<	lock.readLock().lock();
532	<	lock.readLock().unlock();
533	<	lock.writeLock().unlock();
534	<	t1.join(MEDIUM_DELAY_MS);
535	<	t2.join(MEDIUM_DELAY_MS);
606	<	assertTrue(!t1.isAlive());
607	<	assertTrue(!t2.isAlive());
608	<
609	<	} catch(Exception e){
610	<	unexpectedException();
611	<	}
612	<	}
525	>	lock.readLock().lock();
526	>	lock.readLock().unlock();
527	>	Thread.sleep(SHORT_DELAY_MS);
528	>	lock.readLock().lock();
529	>	lock.readLock().unlock();
530	>	lock.writeLock().unlock();
531	>	t1.join(MEDIUM_DELAY_MS);
532	>	t2.join(MEDIUM_DELAY_MS);
533	>	assertTrue(!t1.isAlive());
534	>	assertTrue(!t2.isAlive());
535	>	}
536
537
538		/**
539		* Fair Write lock succeeds if write locked by current thread even if
540		* other threads are waiting for writelock
541		*/
542	<	public void testWriteHoldingWriteLockFair4() {
543	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
544	<	lock.writeLock().lock();
545	<	Thread t1 = new Thread(new Runnable() {
546	<	public void run() {
547	<	lock.writeLock().lock();
548	<	lock.writeLock().unlock();
549	<	}
550	<	});
551	<	Thread t2 = new Thread(new Runnable() {
552	<	public void run() {
553	<	lock.writeLock().lock();
554	<	lock.writeLock().unlock();
632	<	}
633	<	});
542	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
543	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
544	>	lock.writeLock().lock();
545	>	Thread t1 = newStartedThread(new CheckedRunnable() {
546	>	public void realRun() {
547	>	lock.writeLock().lock();
548	>	lock.writeLock().unlock();
549	>	}});
550	>	Thread t2 = newStartedThread(new CheckedRunnable() {
551	>	public void realRun() {
552	>	lock.writeLock().lock();
553	>	lock.writeLock().unlock();
554	>	}});
555
556	<	try {
557	<	t1.start();
558	<	t2.start();
559	<	Thread.sleep(SHORT_DELAY_MS);
560	<	assertTrue(lock.isWriteLockedByCurrentThread());
561	<	assertTrue(lock.getWriteHoldCount() == 1);
562	<	lock.writeLock().lock();
563	<	assertTrue(lock.getWriteHoldCount() == 2);
564	<	lock.writeLock().unlock();
565	<	lock.writeLock().lock();
566	<	lock.writeLock().unlock();
567	<	lock.writeLock().unlock();
568	<	t1.join(MEDIUM_DELAY_MS);
569	<	t2.join(MEDIUM_DELAY_MS);
649	<	assertTrue(!t1.isAlive());
650	<	assertTrue(!t2.isAlive());
651	<
652	<	} catch(Exception e){
653	<	unexpectedException();
654	<	}
655	<	}
556	>	Thread.sleep(SHORT_DELAY_MS);
557	>	assertTrue(lock.isWriteLockedByCurrentThread());
558	>	assertEquals(1, lock.getWriteHoldCount());
559	>	lock.writeLock().lock();
560	>	assertEquals(2, lock.getWriteHoldCount());
561	>	lock.writeLock().unlock();
562	>	lock.writeLock().lock();
563	>	lock.writeLock().unlock();
564	>	lock.writeLock().unlock();
565	>	t1.join(MEDIUM_DELAY_MS);
566	>	t2.join(MEDIUM_DELAY_MS);
567	>	assertTrue(!t1.isAlive());
568	>	assertTrue(!t2.isAlive());
569	>	}
570
571
572		/**
573		* Read tryLock succeeds if readlocked but not writelocked
574		*/
575	<	public void testTryLockWhenReadLocked() {
576	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	<	lock.readLock().lock();
578	<	Thread t = new Thread(new Runnable() {
579	<	public void run() {
580	<	threadAssertTrue(lock.readLock().tryLock());
581	<	lock.readLock().unlock();
582	<	}
669	<	});
670	<	try {
671	<	t.start();
672	<	t.join();
673	<	lock.readLock().unlock();
674	<	} catch(Exception e){
675	<	unexpectedException();
676	<	}
677	<	}
575	>	public void testTryLockWhenReadLocked() throws InterruptedException {
576	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	>	lock.readLock().lock();
578	>	Thread t = newStartedThread(new CheckedRunnable() {
579	>	public void realRun() {
580	>	assertTrue(lock.readLock().tryLock());
581	>	lock.readLock().unlock();
582	>	}});
583
584	<
584	>	t.join();
585	>	lock.readLock().unlock();
586	>	}
587
588		/**
589		* write tryLock fails when readlocked
590		*/
591	<	public void testWriteTryLockWhenReadLocked() {
592	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	<	lock.readLock().lock();
594	<	Thread t = new Thread(new Runnable() {
595	<	public void run() {
596	<	threadAssertFalse(lock.writeLock().tryLock());
597	<	}
598	<	});
599	<	try {
600	<	t.start();
601	<	t.join();
602	<	lock.readLock().unlock();
603	<	} catch(Exception e){
604	<	unexpectedException();
605	<	}
606	<	}
591	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
592	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	>	lock.readLock().lock();
594	>	Thread t = newStartedThread(new CheckedRunnable() {
595	>	public void realRun() {
596	>	assertFalse(lock.writeLock().tryLock());
597	>	}});
598	>
599	>	t.join();
600	>	lock.readLock().unlock();
601	>	}
602	>
603	>
604	>	/**
605	>	* Fair Read tryLock succeeds if readlocked but not writelocked
606	>	*/
607	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
608	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
609	>	lock.readLock().lock();
610	>	Thread t = newStartedThread(new CheckedRunnable() {
611	>	public void realRun() {
612	>	assertTrue(lock.readLock().tryLock());
613	>	lock.readLock().unlock();
614	>	}});
615	>
616	>	t.join();
617	>	lock.readLock().unlock();
618	>	}
619	>
620	>
621	>
622	>	/**
623	>	* Fair write tryLock fails when readlocked
624	>	*/
625	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
626	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
627	>	lock.readLock().lock();
628	>	Thread t = newStartedThread(new CheckedRunnable() {
629	>	public void realRun() {
630	>	assertFalse(lock.writeLock().tryLock());
631	>	}});
632	>
633	>	t.join();
634	>	lock.readLock().unlock();
635	>	}
636	>
637
701	–
638
639		/**
640		* write timed tryLock times out if locked
641		*/
642	<	public void testWriteTryLock_Timeout() {
643	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644	<	lock.writeLock().lock();
645	<	Thread t = new Thread(new Runnable() {
646	<	public void run() {
647	<	try {
648	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
649	<	} catch (Exception ex) {
650	<	threadUnexpectedException();
651	<	}
652	<	}
653	<	});
718	<	try {
719	<	t.start();
720	<	t.join();
721	<	lock.writeLock().unlock();
722	<	} catch(Exception e){
723	<	unexpectedException();
724	<	}
725	<	}
642	>	public void testWriteTryLock_Timeout() throws InterruptedException {
643	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644	>	lock.writeLock().lock();
645	>	Thread t = newStartedThread(new CheckedRunnable() {
646	>	public void realRun() throws InterruptedException {
647	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
648	>	}});
649	>
650	>	t.join();
651	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
652	>	lock.writeLock().unlock();
653	>	}
654
655		/**
656		* read timed tryLock times out if write-locked
657		*/
658	<	public void testReadTryLock_Timeout() {
659	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
660	<	lock.writeLock().lock();
661	<	Thread t = new Thread(new Runnable() {
662	<	public void run() {
663	<	try {
664	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
665	<	} catch (Exception ex) {
666	<	threadUnexpectedException();
667	<	}
668	<	}
669	<	});
742	<	try {
743	<	t.start();
744	<	t.join();
745	<	lock.writeLock().unlock();
746	<	} catch(Exception e){
747	<	unexpectedException();
748	<	}
749	<	}
658	>	public void testReadTryLock_Timeout() throws InterruptedException {
659	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
660	>	lock.writeLock().lock();
661	>	Thread t = newStartedThread(new CheckedRunnable() {
662	>	public void realRun() throws InterruptedException {
663	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
664	>	}});
665	>
666	>	t.join();
667	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
668	>	lock.writeLock().unlock();
669	>	}
670
671
672		/**
673		* write lockInterruptibly succeeds if lock free else is interruptible
674		*/
675	<	public void testWriteLockInterruptibly() {
676	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
677	<	try {
678	<	lock.writeLock().lockInterruptibly();
679	<	} catch(Exception e) {
680	<	unexpectedException();
681	<	}
682	<	Thread t = new Thread(new Runnable() {
683	<	public void run() {
684	<	try {
685	<	lock.writeLock().lockInterruptibly();
686	<	threadShouldThrow();
767	<	}
768	<	catch(InterruptedException success) {
769	<	}
770	<	}
771	<	});
772	<	try {
773	<	t.start();
774	<	t.interrupt();
775	<	t.join();
776	<	lock.writeLock().unlock();
777	<	} catch(Exception e){
778	<	unexpectedException();
779	<	}
675	>	public void testWriteLockInterruptibly() throws InterruptedException {
676	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
677	>	lock.writeLock().lockInterruptibly();
678	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
679	>	public void realRun() throws InterruptedException {
680	>	lock.writeLock().lockInterruptibly();
681	>	}});
682	>
683	>	Thread.sleep(SHORT_DELAY_MS);
684	>	t.interrupt();
685	>	t.join();
686	>	releaseLock(lock.writeLock());
687		}
688
689		/**
690	<	*  read lockInterruptibly succeeds if lock free else is interruptible
690	>	* read lockInterruptibly succeeds if lock free else is interruptible
691		*/
692	<	public void testReadLockInterruptibly() {
693	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	<	try {
695	<	lock.writeLock().lockInterruptibly();
696	<	} catch(Exception e) {
697	<	unexpectedException();
698	<	}
699	<	Thread t = new Thread(new Runnable() {
700	<	public void run() {
701	<	try {
702	<	lock.readLock().lockInterruptibly();
703	<	threadShouldThrow();
797	<	}
798	<	catch(InterruptedException success) {
799	<	}
800	<	}
801	<	});
802	<	try {
803	<	t.start();
804	<	t.interrupt();
805	<	t.join();
806	<	lock.writeLock().unlock();
807	<	} catch(Exception e){
808	<	unexpectedException();
809	<	}
692	>	public void testReadLockInterruptibly() throws InterruptedException {
693	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	>	lock.writeLock().lockInterruptibly();
695	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
696	>	public void realRun() throws InterruptedException {
697	>	lock.readLock().lockInterruptibly();
698	>	}});
699	>
700	>	Thread.sleep(SHORT_DELAY_MS);
701	>	t.interrupt();
702	>	t.join();
703	>	releaseLock(lock.writeLock());
704		}
705
706		/**
707		* Calling await without holding lock throws IllegalMonitorStateException
708		*/
709	<	public void testAwait_IllegalMonitor() {
710	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
709	>	public void testAwait_IllegalMonitor() throws InterruptedException {
710	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
711		final Condition c = lock.writeLock().newCondition();
712		try {
713		c.await();
714		shouldThrow();
715	<	}
822	<	catch (IllegalMonitorStateException success) {
823	<	}
824	<	catch (Exception ex) {
825	<	shouldThrow();
826	<	}
715	>	} catch (IllegalMonitorStateException success) {}
716		}
717
718		/**
719		* Calling signal without holding lock throws IllegalMonitorStateException
720		*/
721		public void testSignal_IllegalMonitor() {
722	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
723		final Condition c = lock.writeLock().newCondition();
724		try {
725		c.signal();
726		shouldThrow();
727	<	}
839	<	catch (IllegalMonitorStateException success) {
840	<	}
841	<	catch (Exception ex) {
842	<	unexpectedException();
843	<	}
727	>	} catch (IllegalMonitorStateException success) {}
728		}
729
730		/**
731		* awaitNanos without a signal times out
732		*/
733	<	public void testAwaitNanos_Timeout() {
734	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
733	>	public void testAwaitNanos_Timeout() throws InterruptedException {
734	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
735		final Condition c = lock.writeLock().newCondition();
736	<	try {
737	<	lock.writeLock().lock();
738	<	long t = c.awaitNanos(100);
739	<	assertTrue(t <= 0);
740	<	lock.writeLock().unlock();
857	<	}
858	<	catch (Exception ex) {
859	<	unexpectedException();
860	<	}
736	>
737	>	lock.writeLock().lock();
738	>	long t = c.awaitNanos(100);
739	>	assertTrue(t <= 0);
740	>	lock.writeLock().unlock();
741		}
742
743
744		/**
745	<	*  timed await without a signal times out
745	>	* timed await without a signal times out
746		*/
747	<	public void testAwait_Timeout() {
748	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
747	>	public void testAwait_Timeout() throws InterruptedException {
748	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749		final Condition c = lock.writeLock().newCondition();
750	<	try {
751	<	lock.writeLock().lock();
752	<	lock.writeLock().unlock();
873	<	}
874	<	catch (Exception ex) {
875	<	unexpectedException();
876	<	}
750	>	lock.writeLock().lock();
751	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
752	>	lock.writeLock().unlock();
753		}
754
755		/**
756		* awaitUntil without a signal times out
757		*/
758	<	public void testAwaitUntil_Timeout() {
759	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758	>	public void testAwaitUntil_Timeout() throws InterruptedException {
759	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
760		final Condition c = lock.writeLock().newCondition();
761	<	try {
762	<	lock.writeLock().lock();
763	<	java.util.Date d = new java.util.Date();
764	<	lock.writeLock().unlock();
889	<	}
890	<	catch (Exception ex) {
891	<	unexpectedException();
892	<	}
761	>	lock.writeLock().lock();
762	>	java.util.Date d = new java.util.Date();
763	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
764	>	lock.writeLock().unlock();
765		}
766
767		/**
768		* await returns when signalled
769		*/
770	<	public void testAwait() {
771	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
770	>	public void testAwait() throws InterruptedException {
771	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
772		final Condition c = lock.writeLock().newCondition();
773	<	Thread t = new Thread(new Runnable() {
774	<	public void run() {
775	<	try {
776	<	lock.writeLock().lock();
777	<	c.await();
778	<	lock.writeLock().unlock();
907	<	}
908	<	catch(InterruptedException e) {
909	<	threadUnexpectedException();
910	<	}
911	<	}
912	<	});
773	>	Thread t = newStartedThread(new CheckedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	lock.writeLock().lock();
776	>	c.await();
777	>	lock.writeLock().unlock();
778	>	}});
779
780	<	try {
781	<	t.start();
782	<	Thread.sleep(SHORT_DELAY_MS);
783	<	lock.writeLock().lock();
784	<	c.signal();
785	<	lock.writeLock().unlock();
920	<	t.join(SHORT_DELAY_MS);
921	<	assertFalse(t.isAlive());
922	<	}
923	<	catch (Exception ex) {
924	<	unexpectedException();
925	<	}
780	>	Thread.sleep(SHORT_DELAY_MS);
781	>	lock.writeLock().lock();
782	>	c.signal();
783	>	lock.writeLock().unlock();
784	>	t.join(SHORT_DELAY_MS);
785	>	assertFalse(t.isAlive());
786		}
787
788		/** A helper class for uninterruptible wait tests */
789		class UninterruptableThread extends Thread {
790		private Lock lock;
791		private Condition c;
792	<
792	>
793		public volatile boolean canAwake = false;
794		public volatile boolean interrupted = false;
795		public volatile boolean lockStarted = false;
796	<
796	>
797		public UninterruptableThread(Lock lock, Condition c) {
798		this.lock = lock;
799		this.c = c;
800		}
801	<
801	>
802		public synchronized void run() {
803		lock.lock();
804		lockStarted = true;
805	<
805	>
806		while (!canAwake) {
807		c.awaitUninterruptibly();
808		}
809	<
809	>
810		interrupted = isInterrupted();
811		lock.unlock();
812		}
#	Line 955 | Line 815 | public class ReentrantReadWriteLockTest
815		/**
816		* awaitUninterruptibly doesn't abort on interrupt
817		*/
818	<	public void testAwaitUninterruptibly() {
818	>	public void testAwaitUninterruptibly() throws InterruptedException {
819		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
820		final Condition c = lock.writeLock().newCondition();
821		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
822
823	<	try {
964	<	thread.start();
965	<
966	<	while (!thread.lockStarted) {
967	<	Thread.sleep(100);
968	<	}
823	>	thread.start();
824
825	<	lock.writeLock().lock();
826	<	try {
827	<	thread.interrupt();
973	<	thread.canAwake = true;
974	<	c.signal();
975	<	} finally {
976	<	lock.writeLock().unlock();
977	<	}
825	>	while (!thread.lockStarted) {
826	>	Thread.sleep(100);
827	>	}
828
829	<	thread.join();
830	<	assertTrue(thread.interrupted);
831	<	assertFalse(thread.isAlive());
832	<	} catch (Exception ex) {
833	<	unexpectedException();
829	>	lock.writeLock().lock();
830	>	try {
831	>	thread.interrupt();
832	>	thread.canAwake = true;
833	>	c.signal();
834	>	} finally {
835	>	lock.writeLock().unlock();
836		}
837	+
838	+	thread.join();
839	+	assertTrue(thread.interrupted);
840	+	assertFalse(thread.isAlive());
841		}
842
843		/**
844		* await is interruptible
845		*/
846	<	public void testAwait_Interrupt() {
847	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
846	>	public void testAwait_Interrupt() throws InterruptedException {
847	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848		final Condition c = lock.writeLock().newCondition();
849	<	Thread t = new Thread(new Runnable() {
850	<	public void run() {
851	<	try {
852	<	lock.writeLock().lock();
853	<	c.await();
854	<	lock.writeLock().unlock();
999	<	threadShouldThrow();
1000	<	}
1001	<	catch(InterruptedException success) {
1002	<	}
1003	<	}
1004	<	});
849	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
850	>	public void realRun() throws InterruptedException {
851	>	lock.writeLock().lock();
852	>	c.await();
853	>	lock.writeLock().unlock();
854	>	}});
855
856	<	try {
857	<	t.start();
858	<	Thread.sleep(SHORT_DELAY_MS);
859	<	t.interrupt();
1010	<	t.join(SHORT_DELAY_MS);
1011	<	assertFalse(t.isAlive());
1012	<	}
1013	<	catch (Exception ex) {
1014	<	unexpectedException();
1015	<	}
856	>	Thread.sleep(SHORT_DELAY_MS);
857	>	t.interrupt();
858	>	t.join(SHORT_DELAY_MS);
859	>	assertFalse(t.isAlive());
860		}
861
862		/**
863		* awaitNanos is interruptible
864		*/
865	<	public void testAwaitNanos_Interrupt() {
866	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
865	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
866	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
867		final Condition c = lock.writeLock().newCondition();
868	<	Thread t = new Thread(new Runnable() {
869	<	public void run() {
870	<	try {
871	<	lock.writeLock().lock();
872	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
873	<	lock.writeLock().unlock();
1030	<	threadShouldThrow();
1031	<	}
1032	<	catch(InterruptedException success) {
1033	<	}
1034	<	}
1035	<	});
868	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
869	>	public void realRun() throws InterruptedException {
870	>	lock.writeLock().lock();
871	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
872	>	lock.writeLock().unlock();
873	>	}});
874
875	<	try {
876	<	t.start();
877	<	Thread.sleep(SHORT_DELAY_MS);
878	<	t.interrupt();
1041	<	t.join(SHORT_DELAY_MS);
1042	<	assertFalse(t.isAlive());
1043	<	}
1044	<	catch (Exception ex) {
1045	<	unexpectedException();
1046	<	}
875	>	Thread.sleep(SHORT_DELAY_MS);
876	>	t.interrupt();
877	>	t.join(SHORT_DELAY_MS);
878	>	assertFalse(t.isAlive());
879		}
880
881		/**
882		* awaitUntil is interruptible
883		*/
884	<	public void testAwaitUntil_Interrupt() {
885	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
884	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
885	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
886		final Condition c = lock.writeLock().newCondition();
887	<	Thread t = new Thread(new Runnable() {
888	<	public void run() {
889	<	try {
890	<	lock.writeLock().lock();
891	<	java.util.Date d = new java.util.Date();
892	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
893	<	lock.writeLock().unlock();
1062	<	threadShouldThrow();
1063	<	}
1064	<	catch(InterruptedException success) {
1065	<	}
1066	<	}
1067	<	});
887	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
888	>	public void realRun() throws InterruptedException {
889	>	lock.writeLock().lock();
890	>	java.util.Date d = new java.util.Date();
891	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
892	>	lock.writeLock().unlock();
893	>	}});
894
895	<	try {
896	<	t.start();
897	<	Thread.sleep(SHORT_DELAY_MS);
898	<	t.interrupt();
1073	<	t.join(SHORT_DELAY_MS);
1074	<	assertFalse(t.isAlive());
1075	<	}
1076	<	catch (Exception ex) {
1077	<	unexpectedException();
1078	<	}
895	>	Thread.sleep(SHORT_DELAY_MS);
896	>	t.interrupt();
897	>	t.join(SHORT_DELAY_MS);
898	>	assertFalse(t.isAlive());
899		}
900
901		/**
902		* signalAll wakes up all threads
903		*/
904	<	public void testSignalAll() {
905	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
904	>	public void testSignalAll() throws InterruptedException {
905	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
906		final Condition c = lock.writeLock().newCondition();
907	<	Thread t1 = new Thread(new Runnable() {
908	<	public void run() {
909	<	try {
910	<	lock.writeLock().lock();
911	<	c.await();
912	<	lock.writeLock().unlock();
1093	<	}
1094	<	catch(InterruptedException e) {
1095	<	threadUnexpectedException();
1096	<	}
1097	<	}
1098	<	});
1099	<
1100	<	Thread t2 = new Thread(new Runnable() {
1101	<	public void run() {
1102	<	try {
1103	<	lock.writeLock().lock();
1104	<	c.await();
1105	<	lock.writeLock().unlock();
1106	<	}
1107	<	catch(InterruptedException e) {
1108	<	threadUnexpectedException();
1109	<	}
1110	<	}
1111	<	});
907	>	Thread t1 = newStartedThread(new CheckedRunnable() {
908	>	public void realRun() throws InterruptedException {
909	>	lock.writeLock().lock();
910	>	c.await();
911	>	lock.writeLock().unlock();
912	>	}});
913
914	<	try {
915	<	t1.start();
916	<	t2.start();
917	<	Thread.sleep(SHORT_DELAY_MS);
918	<	lock.writeLock().lock();
919	<	c.signalAll();
920	<	lock.writeLock().unlock();
921	<	t1.join(SHORT_DELAY_MS);
922	<	t2.join(SHORT_DELAY_MS);
923	<	assertFalse(t1.isAlive());
924	<	assertFalse(t2.isAlive());
925	<	}
926	<	catch (Exception ex) {
927	<	unexpectedException();
928	<	}
914	>	Thread t2 = newStartedThread(new CheckedRunnable() {
915	>	public void realRun() throws InterruptedException {
916	>	lock.writeLock().lock();
917	>	c.await();
918	>	lock.writeLock().unlock();
919	>	}});
920	>
921	>	Thread.sleep(SHORT_DELAY_MS);
922	>	lock.writeLock().lock();
923	>	c.signalAll();
924	>	lock.writeLock().unlock();
925	>	t1.join(SHORT_DELAY_MS);
926	>	t2.join(SHORT_DELAY_MS);
927	>	assertFalse(t1.isAlive());
928	>	assertFalse(t2.isAlive());
929		}
930
931		/**
932		* A serialized lock deserializes as unlocked
933		*/
934	<	public void testSerialization() {
934	>	public void testSerialization() throws Exception {
935		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
936		l.readLock().lock();
937		l.readLock().unlock();
938
939	<	try {
940	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
941	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
942	<	out.writeObject(l);
943	<	out.close();
944	<
945	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
946	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
947	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
948	<	r.readLock().lock();
1148	<	r.readLock().unlock();
1149	<	} catch(Exception e){
1150	<	e.printStackTrace();
1151	<	unexpectedException();
1152	<	}
939	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
940	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
941	>	out.writeObject(l);
942	>	out.close();
943	>
944	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
945	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
946	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
947	>	r.readLock().lock();
948	>	r.readLock().unlock();
949		}
950
951		/**
952		* hasQueuedThreads reports whether there are waiting threads
953		*/
954	<	public void testhasQueuedThreads() {
955	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
954	>	public void testhasQueuedThreads() throws InterruptedException {
955	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
956		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
957		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
958	<	try {
959	<	assertFalse(lock.hasQueuedThreads());
960	<	lock.writeLock().lock();
961	<	t1.start();
962	<	Thread.sleep(SHORT_DELAY_MS);
963	<	assertTrue(lock.hasQueuedThreads());
964	<	t2.start();
965	<	Thread.sleep(SHORT_DELAY_MS);
966	<	assertTrue(lock.hasQueuedThreads());
967	<	t1.interrupt();
968	<	Thread.sleep(SHORT_DELAY_MS);
969	<	assertTrue(lock.hasQueuedThreads());
970	<	lock.writeLock().unlock();
971	<	Thread.sleep(SHORT_DELAY_MS);
972	<	assertFalse(lock.hasQueuedThreads());
973	<	t1.join();
974	<	t2.join();
1179	<	} catch(Exception e){
1180	<	unexpectedException();
1181	<	}
1182	<	}
958	>	assertFalse(lock.hasQueuedThreads());
959	>	lock.writeLock().lock();
960	>	t1.start();
961	>	Thread.sleep(SHORT_DELAY_MS);
962	>	assertTrue(lock.hasQueuedThreads());
963	>	t2.start();
964	>	Thread.sleep(SHORT_DELAY_MS);
965	>	assertTrue(lock.hasQueuedThreads());
966	>	t1.interrupt();
967	>	Thread.sleep(SHORT_DELAY_MS);
968	>	assertTrue(lock.hasQueuedThreads());
969	>	lock.writeLock().unlock();
970	>	Thread.sleep(SHORT_DELAY_MS);
971	>	assertFalse(lock.hasQueuedThreads());
972	>	t1.join();
973	>	t2.join();
974	>	}
975
976		/**
977		* hasQueuedThread(null) throws NPE
978		*/
979	<	public void testHasQueuedThreadNPE() {
980	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
979	>	public void testHasQueuedThreadNPE() {
980	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
981		try {
982		sync.hasQueuedThread(null);
983		shouldThrow();
984	<	} catch (NullPointerException success) {
1193	<	}
984	>	} catch (NullPointerException success) {}
985		}
986
987		/**
988		* hasQueuedThread reports whether a thread is queued.
989		*/
990	<	public void testHasQueuedThread() {
991	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
990	>	public void testHasQueuedThread() throws InterruptedException {
991	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
992		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
993		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
994	<	try {
995	<	assertFalse(sync.hasQueuedThread(t1));
996	<	assertFalse(sync.hasQueuedThread(t2));
997	<	sync.writeLock().lock();
998	<	t1.start();
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	assertTrue(sync.hasQueuedThread(t1));
1001	<	t2.start();
1002	<	Thread.sleep(SHORT_DELAY_MS);
1003	<	assertTrue(sync.hasQueuedThread(t1));
1004	<	assertTrue(sync.hasQueuedThread(t2));
1005	<	t1.interrupt();
1006	<	Thread.sleep(SHORT_DELAY_MS);
1007	<	assertFalse(sync.hasQueuedThread(t1));
1008	<	assertTrue(sync.hasQueuedThread(t2));
1009	<	sync.writeLock().unlock();
1010	<	Thread.sleep(SHORT_DELAY_MS);
1011	<	assertFalse(sync.hasQueuedThread(t1));
1012	<	Thread.sleep(SHORT_DELAY_MS);
1013	<	assertFalse(sync.hasQueuedThread(t2));
1014	<	t1.join();
1015	<	t2.join();
1225	<	} catch(Exception e){
1226	<	unexpectedException();
1227	<	}
1228	<	}
994	>	assertFalse(sync.hasQueuedThread(t1));
995	>	assertFalse(sync.hasQueuedThread(t2));
996	>	sync.writeLock().lock();
997	>	t1.start();
998	>	Thread.sleep(SHORT_DELAY_MS);
999	>	assertTrue(sync.hasQueuedThread(t1));
1000	>	t2.start();
1001	>	Thread.sleep(SHORT_DELAY_MS);
1002	>	assertTrue(sync.hasQueuedThread(t1));
1003	>	assertTrue(sync.hasQueuedThread(t2));
1004	>	t1.interrupt();
1005	>	Thread.sleep(SHORT_DELAY_MS);
1006	>	assertFalse(sync.hasQueuedThread(t1));
1007	>	assertTrue(sync.hasQueuedThread(t2));
1008	>	sync.writeLock().unlock();
1009	>	Thread.sleep(SHORT_DELAY_MS);
1010	>	assertFalse(sync.hasQueuedThread(t1));
1011	>	Thread.sleep(SHORT_DELAY_MS);
1012	>	assertFalse(sync.hasQueuedThread(t2));
1013	>	t1.join();
1014	>	t2.join();
1015	>	}
1016
1017
1018		/**
1019		* getQueueLength reports number of waiting threads
1020		*/
1021	<	public void testGetQueueLength() {
1022	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1021	>	public void testGetQueueLength() throws InterruptedException {
1022	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1023		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1024		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1025	<	try {
1026	<	assertEquals(0, lock.getQueueLength());
1027	<	lock.writeLock().lock();
1028	<	t1.start();
1029	<	Thread.sleep(SHORT_DELAY_MS);
1030	<	assertEquals(1, lock.getQueueLength());
1031	<	t2.start();
1032	<	Thread.sleep(SHORT_DELAY_MS);
1033	<	assertEquals(2, lock.getQueueLength());
1034	<	t1.interrupt();
1035	<	Thread.sleep(SHORT_DELAY_MS);
1036	<	assertEquals(1, lock.getQueueLength());
1037	<	lock.writeLock().unlock();
1038	<	Thread.sleep(SHORT_DELAY_MS);
1039	<	assertEquals(0, lock.getQueueLength());
1040	<	t1.join();
1041	<	t2.join();
1255	<	} catch(Exception e){
1256	<	unexpectedException();
1257	<	}
1258	<	}
1025	>	assertEquals(0, lock.getQueueLength());
1026	>	lock.writeLock().lock();
1027	>	t1.start();
1028	>	Thread.sleep(SHORT_DELAY_MS);
1029	>	assertEquals(1, lock.getQueueLength());
1030	>	t2.start();
1031	>	Thread.sleep(SHORT_DELAY_MS);
1032	>	assertEquals(2, lock.getQueueLength());
1033	>	t1.interrupt();
1034	>	Thread.sleep(SHORT_DELAY_MS);
1035	>	assertEquals(1, lock.getQueueLength());
1036	>	lock.writeLock().unlock();
1037	>	Thread.sleep(SHORT_DELAY_MS);
1038	>	assertEquals(0, lock.getQueueLength());
1039	>	t1.join();
1040	>	t2.join();
1041	>	}
1042
1043		/**
1044		* getQueuedThreads includes waiting threads
1045		*/
1046	<	public void testGetQueuedThreads() {
1047	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1046	>	public void testGetQueuedThreads() throws InterruptedException {
1047	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1048		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1049		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1050	<	try {
1051	<	assertTrue(lock.getQueuedThreads().isEmpty());
1052	<	lock.writeLock().lock();
1053	<	assertTrue(lock.getQueuedThreads().isEmpty());
1054	<	t1.start();
1055	<	Thread.sleep(SHORT_DELAY_MS);
1056	<	assertTrue(lock.getQueuedThreads().contains(t1));
1057	<	t2.start();
1058	<	Thread.sleep(SHORT_DELAY_MS);
1059	<	assertTrue(lock.getQueuedThreads().contains(t1));
1060	<	assertTrue(lock.getQueuedThreads().contains(t2));
1061	<	t1.interrupt();
1062	<	Thread.sleep(SHORT_DELAY_MS);
1063	<	assertFalse(lock.getQueuedThreads().contains(t1));
1064	<	assertTrue(lock.getQueuedThreads().contains(t2));
1065	<	lock.writeLock().unlock();
1066	<	Thread.sleep(SHORT_DELAY_MS);
1067	<	assertTrue(lock.getQueuedThreads().isEmpty());
1068	<	t1.join();
1069	<	t2.join();
1287	<	} catch(Exception e){
1288	<	unexpectedException();
1289	<	}
1290	<	}
1050	>	assertTrue(lock.getQueuedThreads().isEmpty());
1051	>	lock.writeLock().lock();
1052	>	assertTrue(lock.getQueuedThreads().isEmpty());
1053	>	t1.start();
1054	>	Thread.sleep(SHORT_DELAY_MS);
1055	>	assertTrue(lock.getQueuedThreads().contains(t1));
1056	>	t2.start();
1057	>	Thread.sleep(SHORT_DELAY_MS);
1058	>	assertTrue(lock.getQueuedThreads().contains(t1));
1059	>	assertTrue(lock.getQueuedThreads().contains(t2));
1060	>	t1.interrupt();
1061	>	Thread.sleep(SHORT_DELAY_MS);
1062	>	assertFalse(lock.getQueuedThreads().contains(t1));
1063	>	assertTrue(lock.getQueuedThreads().contains(t2));
1064	>	lock.writeLock().unlock();
1065	>	Thread.sleep(SHORT_DELAY_MS);
1066	>	assertTrue(lock.getQueuedThreads().isEmpty());
1067	>	t1.join();
1068	>	t2.join();
1069	>	}
1070
1071		/**
1072		* hasWaiters throws NPE if null
1073		*/
1074		public void testHasWaitersNPE() {
1075	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1075	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1076		try {
1077		lock.hasWaiters(null);
1078		shouldThrow();
1079	<	} catch (NullPointerException success) {
1301	<	} catch (Exception ex) {
1302	<	unexpectedException();
1303	<	}
1079	>	} catch (NullPointerException success) {}
1080		}
1081
1082		/**
1083		* getWaitQueueLength throws NPE if null
1084		*/
1085		public void testGetWaitQueueLengthNPE() {
1086	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1086	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1087		try {
1088		lock.getWaitQueueLength(null);
1089		shouldThrow();
1090	<	} catch (NullPointerException success) {
1315	<	} catch (Exception ex) {
1316	<	unexpectedException();
1317	<	}
1090	>	} catch (NullPointerException success) {}
1091		}
1092
1093
#	Line 1322 | Line 1095 | public class ReentrantReadWriteLockTest
1095		* getWaitingThreads throws NPE if null
1096		*/
1097		public void testGetWaitingThreadsNPE() {
1098	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1098	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1099		try {
1100		lock.getWaitingThreads(null);
1101		shouldThrow();
1102	<	} catch (NullPointerException success) {
1330	<	} catch (Exception ex) {
1331	<	unexpectedException();
1332	<	}
1102	>	} catch (NullPointerException success) {}
1103		}
1104
1105		/**
1106		* hasWaiters throws IAE if not owned
1107		*/
1108		public void testHasWaitersIAE() {
1109	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1110	<	final Condition c = (lock.writeLock().newCondition());
1111	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1109	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1110	>	final Condition c = lock.writeLock().newCondition();
1111	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1112		try {
1113		lock2.hasWaiters(c);
1114		shouldThrow();
1115	<	} catch (IllegalArgumentException success) {
1346	<	} catch (Exception ex) {
1347	<	unexpectedException();
1348	<	}
1115	>	} catch (IllegalArgumentException success) {}
1116		}
1117
1118		/**
1119		* hasWaiters throws IMSE if not locked
1120		*/
1121		public void testHasWaitersIMSE() {
1122	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1123	<	final Condition c = (lock.writeLock().newCondition());
1122	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1123	>	final Condition c = lock.writeLock().newCondition();
1124		try {
1125		lock.hasWaiters(c);
1126		shouldThrow();
1127	<	} catch (IllegalMonitorStateException success) {
1361	<	} catch (Exception ex) {
1362	<	unexpectedException();
1363	<	}
1127	>	} catch (IllegalMonitorStateException success) {}
1128		}
1129
1130
#	Line 1368 | Line 1132 | public class ReentrantReadWriteLockTest
1132		* getWaitQueueLength throws IAE if not owned
1133		*/
1134		public void testGetWaitQueueLengthIAE() {
1135	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1136	<	final Condition c = (lock.writeLock().newCondition());
1137	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1135	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1136	>	final Condition c = lock.writeLock().newCondition();
1137	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1138		try {
1139		lock2.getWaitQueueLength(c);
1140		shouldThrow();
1141	<	} catch (IllegalArgumentException success) {
1378	<	} catch (Exception ex) {
1379	<	unexpectedException();
1380	<	}
1141	>	} catch (IllegalArgumentException success) {}
1142		}
1143
1144		/**
1145		* getWaitQueueLength throws IMSE if not locked
1146		*/
1147		public void testGetWaitQueueLengthIMSE() {
1148	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1149	<	final Condition c = (lock.writeLock().newCondition());
1148	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1149	>	final Condition c = lock.writeLock().newCondition();
1150		try {
1151		lock.getWaitQueueLength(c);
1152		shouldThrow();
1153	<	} catch (IllegalMonitorStateException success) {
1393	<	} catch (Exception ex) {
1394	<	unexpectedException();
1395	<	}
1153	>	} catch (IllegalMonitorStateException success) {}
1154		}
1155
1156
#	Line 1400 | Line 1158 | public class ReentrantReadWriteLockTest
1158		* getWaitingThreads throws IAE if not owned
1159		*/
1160		public void testGetWaitingThreadsIAE() {
1161	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1162	<	final Condition c = (lock.writeLock().newCondition());
1163	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1161	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1162	>	final Condition c = lock.writeLock().newCondition();
1163	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1164		try {
1165		lock2.getWaitingThreads(c);
1166		shouldThrow();
1167	<	} catch (IllegalArgumentException success) {
1410	<	} catch (Exception ex) {
1411	<	unexpectedException();
1412	<	}
1167	>	} catch (IllegalArgumentException success) {}
1168		}
1169
1170		/**
1171		* getWaitingThreads throws IMSE if not locked
1172		*/
1173		public void testGetWaitingThreadsIMSE() {
1174	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1175	<	final Condition c = (lock.writeLock().newCondition());
1174	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1175	>	final Condition c = lock.writeLock().newCondition();
1176		try {
1177		lock.getWaitingThreads(c);
1178		shouldThrow();
1179	<	} catch (IllegalMonitorStateException success) {
1425	<	} catch (Exception ex) {
1426	<	unexpectedException();
1427	<	}
1179	>	} catch (IllegalMonitorStateException success) {}
1180		}
1181
1182
1183		/**
1184		* hasWaiters returns true when a thread is waiting, else false
1185		*/
1186	<	public void testHasWaiters() {
1187	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1188	<	final Condition c = (lock.writeLock().newCondition());
1189	<	Thread t = new Thread(new Runnable() {
1190	<	public void run() {
1191	<	try {
1192	<	lock.writeLock().lock();
1193	<	threadAssertFalse(lock.hasWaiters(c));
1194	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1195	<	c.await();
1196	<	lock.writeLock().unlock();
1445	<	}
1446	<	catch(InterruptedException e) {
1447	<	threadUnexpectedException();
1448	<	}
1449	<	}
1450	<	});
1186	>	public void testHasWaiters() throws InterruptedException {
1187	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1188	>	final Condition c = lock.writeLock().newCondition();
1189	>	Thread t = newStartedThread(new CheckedRunnable() {
1190	>	public void realRun() throws InterruptedException {
1191	>	lock.writeLock().lock();
1192	>	assertFalse(lock.hasWaiters(c));
1193	>	assertEquals(0, lock.getWaitQueueLength(c));
1194	>	c.await();
1195	>	lock.writeLock().unlock();
1196	>	}});
1197
1198	<	try {
1199	<	t.start();
1200	<	Thread.sleep(SHORT_DELAY_MS);
1201	<	lock.writeLock().lock();
1202	<	assertTrue(lock.hasWaiters(c));
1203	<	assertEquals(1, lock.getWaitQueueLength(c));
1204	<	c.signal();
1205	<	lock.writeLock().unlock();
1206	<	Thread.sleep(SHORT_DELAY_MS);
1207	<	lock.writeLock().lock();
1208	<	assertFalse(lock.hasWaiters(c));
1209	<	assertEquals(0, lock.getWaitQueueLength(c));
1210	<	lock.writeLock().unlock();
1465	<	t.join(SHORT_DELAY_MS);
1466	<	assertFalse(t.isAlive());
1467	<	}
1468	<	catch (Exception ex) {
1469	<	unexpectedException();
1470	<	}
1198	>	Thread.sleep(SHORT_DELAY_MS);
1199	>	lock.writeLock().lock();
1200	>	assertTrue(lock.hasWaiters(c));
1201	>	assertEquals(1, lock.getWaitQueueLength(c));
1202	>	c.signal();
1203	>	lock.writeLock().unlock();
1204	>	Thread.sleep(SHORT_DELAY_MS);
1205	>	lock.writeLock().lock();
1206	>	assertFalse(lock.hasWaiters(c));
1207	>	assertEquals(0, lock.getWaitQueueLength(c));
1208	>	lock.writeLock().unlock();
1209	>	t.join(SHORT_DELAY_MS);
1210	>	assertFalse(t.isAlive());
1211		}
1212
1213		/**
1214		* getWaitQueueLength returns number of waiting threads
1215		*/
1216	<	public void testGetWaitQueueLength() {
1217	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1218	<	final Condition c = (lock.writeLock().newCondition());
1219	<	Thread t = new Thread(new Runnable() {
1220	<	public void run() {
1221	<	try {
1222	<	lock.writeLock().lock();
1223	<	threadAssertFalse(lock.hasWaiters(c));
1224	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1225	<	c.await();
1226	<	lock.writeLock().unlock();
1487	<	}
1488	<	catch(InterruptedException e) {
1489	<	threadUnexpectedException();
1490	<	}
1491	<	}
1492	<	});
1216	>	public void testGetWaitQueueLength() throws InterruptedException {
1217	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1218	>	final Condition c = lock.writeLock().newCondition();
1219	>	Thread t = newStartedThread(new CheckedRunnable() {
1220	>	public void realRun() throws InterruptedException {
1221	>	lock.writeLock().lock();
1222	>	assertFalse(lock.hasWaiters(c));
1223	>	assertEquals(0, lock.getWaitQueueLength(c));
1224	>	c.await();
1225	>	lock.writeLock().unlock();
1226	>	}});
1227
1228	<	try {
1229	<	t.start();
1230	<	Thread.sleep(SHORT_DELAY_MS);
1231	<	lock.writeLock().lock();
1232	<	assertTrue(lock.hasWaiters(c));
1233	<	assertEquals(1, lock.getWaitQueueLength(c));
1234	<	c.signal();
1235	<	lock.writeLock().unlock();
1236	<	Thread.sleep(SHORT_DELAY_MS);
1237	<	lock.writeLock().lock();
1238	<	assertFalse(lock.hasWaiters(c));
1239	<	assertEquals(0, lock.getWaitQueueLength(c));
1240	<	lock.writeLock().unlock();
1507	<	t.join(SHORT_DELAY_MS);
1508	<	assertFalse(t.isAlive());
1509	<	}
1510	<	catch (Exception ex) {
1511	<	unexpectedException();
1512	<	}
1228	>	Thread.sleep(SHORT_DELAY_MS);
1229	>	lock.writeLock().lock();
1230	>	assertTrue(lock.hasWaiters(c));
1231	>	assertEquals(1, lock.getWaitQueueLength(c));
1232	>	c.signal();
1233	>	lock.writeLock().unlock();
1234	>	Thread.sleep(SHORT_DELAY_MS);
1235	>	lock.writeLock().lock();
1236	>	assertFalse(lock.hasWaiters(c));
1237	>	assertEquals(0, lock.getWaitQueueLength(c));
1238	>	lock.writeLock().unlock();
1239	>	t.join(SHORT_DELAY_MS);
1240	>	assertFalse(t.isAlive());
1241		}
1242
1243
1244		/**
1245		* getWaitingThreads returns only and all waiting threads
1246		*/
1247	<	public void testGetWaitingThreads() {
1248	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1247	>	public void testGetWaitingThreads() throws InterruptedException {
1248	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1249		final Condition c = lock.writeLock().newCondition();
1250	<	Thread t1 = new Thread(new Runnable() {
1251	<	public void run() {
1252	<	try {
1253	<	lock.writeLock().lock();
1254	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1255	<	c.await();
1256	<	lock.writeLock().unlock();
1529	<	}
1530	<	catch(InterruptedException e) {
1531	<	threadUnexpectedException();
1532	<	}
1533	<	}
1534	<	});
1535	<
1536	<	Thread t2 = new Thread(new Runnable() {
1537	<	public void run() {
1538	<	try {
1539	<	lock.writeLock().lock();
1540	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1541	<	c.await();
1542	<	lock.writeLock().unlock();
1543	<	}
1544	<	catch(InterruptedException e) {
1545	<	threadUnexpectedException();
1546	<	}
1547	<	}
1548	<	});
1250	>	Thread t1 = new Thread(new CheckedRunnable() {
1251	>	public void realRun() throws InterruptedException {
1252	>	lock.writeLock().lock();
1253	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1254	>	c.await();
1255	>	lock.writeLock().unlock();
1256	>	}});
1257
1258	<	try {
1259	<	lock.writeLock().lock();
1260	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1261	<	lock.writeLock().unlock();
1262	<	t1.start();
1263	<	Thread.sleep(SHORT_DELAY_MS);
1264	<	t2.start();
1265	<	Thread.sleep(SHORT_DELAY_MS);
1266	<	lock.writeLock().lock();
1267	<	assertTrue(lock.hasWaiters(c));
1268	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1269	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1270	<	c.signalAll();
1271	<	lock.writeLock().unlock();
1272	<	Thread.sleep(SHORT_DELAY_MS);
1273	<	lock.writeLock().lock();
1274	<	assertFalse(lock.hasWaiters(c));
1275	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1276	<	lock.writeLock().unlock();
1277	<	t1.join(SHORT_DELAY_MS);
1278	<	t2.join(SHORT_DELAY_MS);
1279	<	assertFalse(t1.isAlive());
1280	<	assertFalse(t2.isAlive());
1281	<	}
1282	<	catch (Exception ex) {
1283	<	unexpectedException();
1284	<	}
1258	>	Thread t2 = new Thread(new CheckedRunnable() {
1259	>	public void realRun() throws InterruptedException {
1260	>	lock.writeLock().lock();
1261	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1262	>	c.await();
1263	>	lock.writeLock().unlock();
1264	>	}});
1265	>
1266	>	lock.writeLock().lock();
1267	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1268	>	lock.writeLock().unlock();
1269	>	t1.start();
1270	>	Thread.sleep(SHORT_DELAY_MS);
1271	>	t2.start();
1272	>	Thread.sleep(SHORT_DELAY_MS);
1273	>	lock.writeLock().lock();
1274	>	assertTrue(lock.hasWaiters(c));
1275	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1276	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1277	>	c.signalAll();
1278	>	lock.writeLock().unlock();
1279	>	Thread.sleep(SHORT_DELAY_MS);
1280	>	lock.writeLock().lock();
1281	>	assertFalse(lock.hasWaiters(c));
1282	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1283	>	lock.writeLock().unlock();
1284	>	t1.join(SHORT_DELAY_MS);
1285	>	t2.join(SHORT_DELAY_MS);
1286	>	assertFalse(t1.isAlive());
1287	>	assertFalse(t2.isAlive());
1288		}
1289
1290		/**

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