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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.21 by dl, Thu Jan 20 00:39:13 2005 UTC vs.
Revision 1.55 by jsr166, Mon May 2 01:15:26 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 write lock, checking that it had a hold count of 1.
63	+	*/
64	+	void releaseWriteLock(ReentrantReadWriteLock lock) {
65	+	ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
66	+	assertTrue(writeLock.isHeldByCurrentThread());
67	+	writeLock.unlock();
68	+	assertFalse(writeLock.isHeldByCurrentThread());
69	+	}
70	+
71	+	/**
72		* Constructor sets given fairness, and is in unlocked state
73		*/
74	<	public void testConstructor() {
75	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
74	>	public void testConstructor() {
75	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
76		assertFalse(rl.isFair());
77		assertFalse(rl.isWriteLocked());
78		assertEquals(0, rl.getReadLockCount());
79	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
79	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
80		assertTrue(r2.isFair());
81		assertFalse(r2.isWriteLocked());
82		assertEquals(0, r2.getReadLockCount());
83	+	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
84	+	assertFalse(r3.isFair());
85	+	assertFalse(r3.isWriteLocked());
86	+	assertEquals(0, r3.getReadLockCount());
87		}
88
89		/**
90		* write-locking and read-locking an unlocked lock succeed
91		*/
92	<	public void testLock() {
93	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
92	>	public void testLock() {
93	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
94		rl.writeLock().lock();
95		assertTrue(rl.isWriteLocked());
96		assertTrue(rl.isWriteLockedByCurrentThread());
97	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
98		assertEquals(0, rl.getReadLockCount());
99		rl.writeLock().unlock();
100		assertFalse(rl.isWriteLocked());
101		assertFalse(rl.isWriteLockedByCurrentThread());
102	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
103		assertEquals(0, rl.getReadLockCount());
104		rl.readLock().lock();
105		assertFalse(rl.isWriteLocked());
#	Line 103 | Line 115 | public class ReentrantReadWriteLockTest
115		/**
116		* locking an unlocked fair lock succeeds
117		*/
118	<	public void testFairLock() {
119	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
118	>	public void testFairLock() {
119	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
120		rl.writeLock().lock();
121		assertTrue(rl.isWriteLocked());
122		assertTrue(rl.isWriteLockedByCurrentThread());
123	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
124		assertEquals(0, rl.getReadLockCount());
125		rl.writeLock().unlock();
126		assertFalse(rl.isWriteLocked());
127		assertFalse(rl.isWriteLockedByCurrentThread());
128	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
129		assertEquals(0, rl.getReadLockCount());
130		rl.readLock().lock();
131		assertFalse(rl.isWriteLocked());
#	Line 126 | Line 140 | public class ReentrantReadWriteLockTest
140		/**
141		* getWriteHoldCount returns number of recursive holds
142		*/
143	+	public void testGetWriteHoldCount() {
144	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
145	+	for (int i = 1; i <= SIZE; i++) {
146	+	lock.writeLock().lock();
147	+	assertEquals(i,lock.getWriteHoldCount());
148	+	}
149	+	for (int i = SIZE; i > 0; i--) {
150	+	lock.writeLock().unlock();
151	+	assertEquals(i-1,lock.getWriteHoldCount());
152	+	}
153	+	}
154	+
155	+	/**
156	+	* WriteLock.getHoldCount returns number of recursive holds
157	+	*/
158		public void testGetHoldCount() {
159	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
160	<	for(int i = 1; i <= SIZE; i++) {
161	<	lock.writeLock().lock();
162	<	assertEquals(i,lock.getWriteHoldCount());
163	<	}
164	<	for(int i = SIZE; i > 0; i--) {
165	<	lock.writeLock().unlock();
166	<	assertEquals(i-1,lock.getWriteHoldCount());
167	<	}
159	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
160	>	for (int i = 1; i <= SIZE; i++) {
161	>	lock.writeLock().lock();
162	>	assertEquals(i,lock.writeLock().getHoldCount());
163	>	}
164	>	for (int i = SIZE; i > 0; i--) {
165	>	lock.writeLock().unlock();
166	>	assertEquals(i-1,lock.writeLock().getHoldCount());
167	>	}
168		}
169	<
169	>
170	>	/**
171	>	* getReadHoldCount returns number of recursive holds
172	>	*/
173	>	public void testGetReadHoldCount() {
174	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
175	>	for (int i = 1; i <= SIZE; i++) {
176	>	lock.readLock().lock();
177	>	assertEquals(i,lock.getReadHoldCount());
178	>	}
179	>	for (int i = SIZE; i > 0; i--) {
180	>	lock.readLock().unlock();
181	>	assertEquals(i-1,lock.getReadHoldCount());
182	>	}
183	>	}
184	>
185
186		/**
187		* write-unlocking an unlocked lock throws IllegalMonitorStateException
188		*/
189	<	public void testUnlock_IllegalMonitorStateException() {
190	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
191	<	try {
192	<	rl.writeLock().unlock();
193	<	shouldThrow();
194	<	} catch(IllegalMonitorStateException success){}
189	>	public void testUnlock_IllegalMonitorStateException() {
190	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
191	>	try {
192	>	rl.writeLock().unlock();
193	>	shouldThrow();
194	>	} catch (IllegalMonitorStateException success) {}
195		}
196
197
198		/**
199		* write-lockInterruptibly is interruptible
200		*/
201	<	public void testWriteLockInterruptibly_Interrupted() {
202	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
203	<	Thread t = new Thread(new Runnable() {
204	<	public void run() {
205	<	try {
206	<	lock.writeLock().lockInterruptibly();
207	<	lock.writeLock().unlock();
208	<	lock.writeLock().lockInterruptibly();
209	<	lock.writeLock().unlock();
210	<	} catch(InterruptedException success){}
211	<	}
212	<	});
213	<	try {
170	<	lock.writeLock().lock();
171	<	t.start();
172	<	t.interrupt();
173	<	lock.writeLock().unlock();
174	<	t.join();
175	<	} catch(Exception e){
176	<	unexpectedException();
177	<	}
178	<	}
201	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
202	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
203	>	lock.writeLock().lock();
204	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
205	>	public void realRun() throws InterruptedException {
206	>	lock.writeLock().lockInterruptibly();
207	>	}});
208	>
209	>	Thread.sleep(SHORT_DELAY_MS);
210	>	t.interrupt();
211	>	awaitTermination(t, LONG_DELAY_MS);
212	>	releaseWriteLock(lock);
213	>	}
214
215		/**
216		* timed write-tryLock is interruptible
217		*/
218	<	public void testWriteTryLock_Interrupted() {
219	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
220	<	lock.writeLock().lock();
221	<	Thread t = new Thread(new Runnable() {
222	<	public void run() {
223	<	try {
224	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
225	<	} catch(InterruptedException success){}
226	<	}
227	<	});
228	<	try {
229	<	t.start();
195	<	t.interrupt();
196	<	lock.writeLock().unlock();
197	<	t.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
218	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
219	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
220	>	lock.writeLock().lock();
221	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
222	>	public void realRun() throws InterruptedException {
223	>	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
224	>	}});
225	>
226	>	Thread.sleep(SHORT_DELAY_MS);
227	>	t.interrupt();
228	>	awaitTermination(t, LONG_DELAY_MS);
229	>	releaseWriteLock(lock);
230		}
231
232		/**
233		* read-lockInterruptibly is interruptible
234		*/
235	<	public void testReadLockInterruptibly_Interrupted() {
236	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
237	<	lock.writeLock().lock();
238	<	Thread t = new Thread(new Runnable() {
239	<	public void run() {
240	<	try {
241	<	lock.readLock().lockInterruptibly();
242	<	} catch(InterruptedException success){}
243	<	}
244	<	});
245	<	try {
246	<	t.start();
247	<	t.interrupt();
219	<	lock.writeLock().unlock();
220	<	t.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
235	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
236	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
237	>	lock.writeLock().lock();
238	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
239	>	public void realRun() throws InterruptedException {
240	>	lock.readLock().lockInterruptibly();
241	>	}});
242	>
243	>	Thread.sleep(SHORT_DELAY_MS);
244	>	t.interrupt();
245	>	awaitTermination(t, LONG_DELAY_MS);
246	>	releaseWriteLock(lock);
247	>	}
248
249		/**
250		* timed read-tryLock is interruptible
251		*/
252	<	public void testReadTryLock_Interrupted() {
253	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	<	lock.writeLock().lock();
255	<	Thread t = new Thread(new Runnable() {
256	<	public void run() {
257	<	try {
258	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
259	<	threadShouldThrow();
260	<	} catch(InterruptedException success){}
261	<	}
262	<	});
263	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	t.join();
244	<	} catch(Exception e){
245	<	unexpectedException();
246	<	}
252	>	public void testReadTryLock_Interrupted() throws InterruptedException {
253	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	>	lock.writeLock().lock();
255	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
256	>	public void realRun() throws InterruptedException {
257	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
258	>	}});
259	>
260	>	Thread.sleep(SHORT_DELAY_MS);
261	>	t.interrupt();
262	>	awaitTermination(t, LONG_DELAY_MS);
263	>	releaseWriteLock(lock);
264		}
265
266	<
266	>
267		/**
268		* write-tryLock fails if locked
269		*/
270	<	public void testWriteTryLockWhenLocked() {
271	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
272	<	lock.writeLock().lock();
273	<	Thread t = new Thread(new Runnable() {
274	<	public void run() {
275	<	threadAssertFalse(lock.writeLock().tryLock());
276	<	}
277	<	});
278	<	try {
279	<	t.start();
280	<	t.join();
264	<	lock.writeLock().unlock();
265	<	} catch(Exception e){
266	<	unexpectedException();
267	<	}
268	<	}
270	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
271	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
272	>	lock.writeLock().lock();
273	>	Thread t = newStartedThread(new CheckedRunnable() {
274	>	public void realRun() {
275	>	assertFalse(lock.writeLock().tryLock());
276	>	}});
277	>
278	>	awaitTermination(t, LONG_DELAY_MS);
279	>	releaseWriteLock(lock);
280	>	}
281
282		/**
283		* read-tryLock fails if locked
284		*/
285	<	public void testReadTryLockWhenLocked() {
286	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
287	<	lock.writeLock().lock();
288	<	Thread t = new Thread(new Runnable() {
289	<	public void run() {
290	<	threadAssertFalse(lock.readLock().tryLock());
291	<	}
292	<	});
293	<	try {
294	<	t.start();
295	<	t.join();
284	<	lock.writeLock().unlock();
285	<	} catch(Exception e){
286	<	unexpectedException();
287	<	}
288	<	}
285	>	public void testReadTryLockWhenLocked() throws InterruptedException {
286	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
287	>	lock.writeLock().lock();
288	>	Thread t = newStartedThread(new CheckedRunnable() {
289	>	public void realRun() {
290	>	assertFalse(lock.readLock().tryLock());
291	>	}});
292	>
293	>	awaitTermination(t, LONG_DELAY_MS);
294	>	releaseWriteLock(lock);
295	>	}
296
297		/**
298		* Multiple threads can hold a read lock when not write-locked
299		*/
300	<	public void testMultipleReadLocks() {
301	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	<	lock.readLock().lock();
303	<	Thread t = new Thread(new Runnable() {
304	<	public void run() {
305	<	threadAssertTrue(lock.readLock().tryLock());
306	<	lock.readLock().unlock();
307	<	}
308	<	});
309	<	try {
310	<	t.start();
311	<	t.join();
305	<	lock.readLock().unlock();
306	<	} catch(Exception e){
307	<	unexpectedException();
308	<	}
309	<	}
300	>	public void testMultipleReadLocks() throws InterruptedException {
301	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	>	lock.readLock().lock();
303	>	Thread t = newStartedThread(new CheckedRunnable() {
304	>	public void realRun() {
305	>	assertTrue(lock.readLock().tryLock());
306	>	lock.readLock().unlock();
307	>	}});
308	>
309	>	awaitTermination(t, LONG_DELAY_MS);
310	>	lock.readLock().unlock();
311	>	}
312
313		/**
314		* A writelock succeeds after reading threads unlock
315		*/
316	<	public void testWriteAfterMultipleReadLocks() {
317	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
318	<	lock.readLock().lock();
319	<	Thread t1 = new Thread(new Runnable() {
320	<	public void run() {
321	<	lock.readLock().lock();
322	<	lock.readLock().unlock();
323	<	}
324	<	});
325	<	Thread t2 = new Thread(new Runnable() {
326	<	public void run() {
327	<	lock.writeLock().lock();
328	<	lock.writeLock().unlock();
327	<	}
328	<	});
316	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
317	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
318	>	lock.readLock().lock();
319	>	Thread t1 = newStartedThread(new CheckedRunnable() {
320	>	public void realRun() {
321	>	lock.readLock().lock();
322	>	lock.readLock().unlock();
323	>	}});
324	>	Thread t2 = newStartedThread(new CheckedRunnable() {
325	>	public void realRun() {
326	>	lock.writeLock().lock();
327	>	lock.writeLock().unlock();
328	>	}});
329
330	<	try {
331	<	t1.start();
332	<	t2.start();
333	<	Thread.sleep(SHORT_DELAY_MS);
334	<	lock.readLock().unlock();
335	<	t1.join(MEDIUM_DELAY_MS);
336	<	t2.join(MEDIUM_DELAY_MS);
337	<	assertTrue(!t1.isAlive());
338	<	assertTrue(!t2.isAlive());
339	<
340	<	} catch(Exception e){
341	<	unexpectedException();
342	<	}
343	<	}
330	>	Thread.sleep(SHORT_DELAY_MS);
331	>	lock.readLock().unlock();
332	>	awaitTermination(t1, LONG_DELAY_MS);
333	>	awaitTermination(t2, LONG_DELAY_MS);
334	>	}
335
336		/**
337		* Readlocks succeed after a writing thread unlocks
338		*/
339	<	public void testReadAfterWriteLock() {
340	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
341	<	lock.writeLock().lock();
342	<	Thread t1 = new Thread(new Runnable() {
343	<	public void run() {
344	<	lock.readLock().lock();
345	<	lock.readLock().unlock();
346	<	}
347	<	});
348	<	Thread t2 = new Thread(new Runnable() {
349	<	public void run() {
350	<	lock.readLock().lock();
351	<	lock.readLock().unlock();
352	<	}
353	<	});
354	<
355	<	try {
356	<	t1.start();
357	<	t2.start();
358	<	Thread.sleep(SHORT_DELAY_MS);
359	<	lock.writeLock().unlock();
369	<	t1.join(MEDIUM_DELAY_MS);
370	<	t2.join(MEDIUM_DELAY_MS);
371	<	assertTrue(!t1.isAlive());
372	<	assertTrue(!t2.isAlive());
373	<
374	<	} catch(Exception e){
375	<	unexpectedException();
376	<	}
377	<	}
339	>	public void testReadAfterWriteLock() throws InterruptedException {
340	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
341	>	lock.writeLock().lock();
342	>	Thread t1 = newStartedThread(new CheckedRunnable() {
343	>	public void realRun() {
344	>	lock.readLock().lock();
345	>	lock.readLock().unlock();
346	>	}});
347	>	Thread t2 = newStartedThread(new CheckedRunnable() {
348	>	public void realRun() {
349	>	lock.readLock().lock();
350	>	lock.readLock().unlock();
351	>	}});
352	>
353	>	Thread.sleep(SHORT_DELAY_MS);
354	>	assertTrue(t1.isAlive());
355	>	assertTrue(t2.isAlive());
356	>	releaseWriteLock(lock);
357	>	awaitTermination(t1, LONG_DELAY_MS);
358	>	awaitTermination(t2, LONG_DELAY_MS);
359	>	}
360
361		/**
362		* Read trylock succeeds if write locked by current thread
363		*/
364	<	public void testReadHoldingWriteLock() {
365	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
366	<	lock.writeLock().lock();
364	>	public void testReadHoldingWriteLock() {
365	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
366	>	lock.writeLock().lock();
367		assertTrue(lock.readLock().tryLock());
368		lock.readLock().unlock();
369		lock.writeLock().unlock();
370	<	}
370	>	}
371
372		/**
373		* Read lock succeeds if write locked by current thread even if
374	<	* other threads are waiting
374	>	* other threads are waiting for readlock
375		*/
376	<	public void testReadHoldingWriteLock2() {
377	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	<	lock.writeLock().lock();
379	<	Thread t1 = new Thread(new Runnable() {
380	<	public void run() {
381	<	lock.readLock().lock();
382	<	lock.readLock().unlock();
383	<	}
384	<	});
385	<	Thread t2 = new Thread(new Runnable() {
386	<	public void run() {
387	<	lock.readLock().lock();
388	<	lock.readLock().unlock();
389	<	}
390	<	});
376	>	public void testReadHoldingWriteLock2() throws InterruptedException {
377	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
378	>	lock.writeLock().lock();
379	>	Thread t1 = newStartedThread(new CheckedRunnable() {
380	>	public void realRun() {
381	>	lock.readLock().lock();
382	>	lock.readLock().unlock();
383	>	}});
384	>	Thread t2 = newStartedThread(new CheckedRunnable() {
385	>	public void realRun() {
386	>	lock.readLock().lock();
387	>	lock.readLock().unlock();
388	>	}});
389	>
390	>	lock.readLock().lock();
391	>	lock.readLock().unlock();
392	>	Thread.sleep(SHORT_DELAY_MS);
393	>	lock.readLock().lock();
394	>	lock.readLock().unlock();
395	>	lock.writeLock().unlock();
396	>	awaitTermination(t1, LONG_DELAY_MS);
397	>	awaitTermination(t2, LONG_DELAY_MS);
398	>	}
399	>
400	>	/**
401	>	* Read lock succeeds if write locked by current thread even if
402	>	* other threads are waiting for writelock
403	>	*/
404	>	public void testReadHoldingWriteLock3() throws InterruptedException {
405	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
406	>	lock.writeLock().lock();
407	>	Thread t1 = newStartedThread(new CheckedRunnable() {
408	>	public void realRun() {
409	>	lock.writeLock().lock();
410	>	lock.writeLock().unlock();
411	>	}});
412	>	Thread t2 = newStartedThread(new CheckedRunnable() {
413	>	public void realRun() {
414	>	lock.writeLock().lock();
415	>	lock.writeLock().unlock();
416	>	}});
417	>
418	>	lock.readLock().lock();
419	>	lock.readLock().unlock();
420	>	Thread.sleep(SHORT_DELAY_MS);
421	>	lock.readLock().lock();
422	>	lock.readLock().unlock();
423	>	lock.writeLock().unlock();
424	>	awaitTermination(t1, LONG_DELAY_MS);
425	>	awaitTermination(t2, LONG_DELAY_MS);
426	>	}
427	>
428	>
429	>	/**
430	>	* Write lock succeeds if write locked by current thread even if
431	>	* other threads are waiting for writelock
432	>	*/
433	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
434	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
435	>	lock.writeLock().lock();
436	>	Thread t1 = newStartedThread(new CheckedRunnable() {
437	>	public void realRun() {
438	>	lock.writeLock().lock();
439	>	lock.writeLock().unlock();
440	>	}});
441	>	Thread t2 = newStartedThread(new CheckedRunnable() {
442	>	public void realRun() {
443	>	lock.writeLock().lock();
444	>	lock.writeLock().unlock();
445	>	}});
446	>
447	>	lock.writeLock().lock();
448	>	lock.writeLock().unlock();
449	>	Thread.sleep(SHORT_DELAY_MS);
450	>	lock.writeLock().lock();
451	>	lock.writeLock().unlock();
452	>	lock.writeLock().unlock();
453	>	awaitTermination(t1, LONG_DELAY_MS);
454	>	awaitTermination(t2, LONG_DELAY_MS);
455	>	}
456
410	–	try {
411	–	t1.start();
412	–	t2.start();
413	–	lock.readLock().lock();
414	–	lock.readLock().unlock();
415	–	Thread.sleep(SHORT_DELAY_MS);
416	–	lock.readLock().lock();
417	–	lock.readLock().unlock();
418	–	lock.writeLock().unlock();
419	–	t1.join(MEDIUM_DELAY_MS);
420	–	t2.join(MEDIUM_DELAY_MS);
421	–	assertTrue(!t1.isAlive());
422	–	assertTrue(!t2.isAlive());
423	–
424	–	} catch(Exception e){
425	–	unexpectedException();
426	–	}
427	–	}
457
458		/**
459		* Fair Read trylock succeeds if write locked by current thread
460		*/
461	<	public void testReadHoldingWriteLockFair() {
462	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
463	<	lock.writeLock().lock();
461	>	public void testReadHoldingWriteLockFair() {
462	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
463	>	lock.writeLock().lock();
464		assertTrue(lock.readLock().tryLock());
465		lock.readLock().unlock();
466		lock.writeLock().unlock();
467	<	}
467	>	}
468
469		/**
470		* Fair Read lock succeeds if write locked by current thread even if
471	<	* other threads are waiting
471	>	* other threads are waiting for readlock
472		*/
473	<	public void testReadHoldingWriteLockFair2() {
474	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
475	<	lock.writeLock().lock();
476	<	Thread t1 = new Thread(new Runnable() {
477	<	public void run() {
478	<	lock.readLock().lock();
479	<	lock.readLock().unlock();
480	<	}
481	<	});
482	<	Thread t2 = new Thread(new Runnable() {
483	<	public void run() {
484	<	lock.readLock().lock();
485	<	lock.readLock().unlock();
457	<	}
458	<	});
473	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
474	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
475	>	lock.writeLock().lock();
476	>	Thread t1 = newStartedThread(new CheckedRunnable() {
477	>	public void realRun() {
478	>	lock.readLock().lock();
479	>	lock.readLock().unlock();
480	>	}});
481	>	Thread t2 = newStartedThread(new CheckedRunnable() {
482	>	public void realRun() {
483	>	lock.readLock().lock();
484	>	lock.readLock().unlock();
485	>	}});
486
487	<	try {
488	<	t1.start();
489	<	t2.start();
490	<	lock.readLock().lock();
491	<	lock.readLock().unlock();
492	<	Thread.sleep(SHORT_DELAY_MS);
493	<	lock.readLock().lock();
494	<	lock.readLock().unlock();
495	<	lock.writeLock().unlock();
496	<	t1.join(MEDIUM_DELAY_MS);
497	<	t2.join(MEDIUM_DELAY_MS);
498	<	assertTrue(!t1.isAlive());
499	<	assertTrue(!t2.isAlive());
500	<
501	<	} catch(Exception e){
502	<	unexpectedException();
503	<	}
504	<	}
487	>	lock.readLock().lock();
488	>	lock.readLock().unlock();
489	>	Thread.sleep(SHORT_DELAY_MS);
490	>	lock.readLock().lock();
491	>	lock.readLock().unlock();
492	>	lock.writeLock().unlock();
493	>	awaitTermination(t1, LONG_DELAY_MS);
494	>	awaitTermination(t2, LONG_DELAY_MS);
495	>	}
496	>
497	>
498	>	/**
499	>	* Fair Read lock succeeds if write locked by current thread even if
500	>	* other threads are waiting for writelock
501	>	*/
502	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
503	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504	>	lock.writeLock().lock();
505	>	Thread t1 = newStartedThread(new CheckedRunnable() {
506	>	public void realRun() {
507	>	lock.writeLock().lock();
508	>	lock.writeLock().unlock();
509	>	}});
510	>	Thread t2 = newStartedThread(new CheckedRunnable() {
511	>	public void realRun() {
512	>	lock.writeLock().lock();
513	>	lock.writeLock().unlock();
514	>	}});
515	>
516	>	lock.readLock().lock();
517	>	lock.readLock().unlock();
518	>	Thread.sleep(SHORT_DELAY_MS);
519	>	lock.readLock().lock();
520	>	lock.readLock().unlock();
521	>	lock.writeLock().unlock();
522	>	awaitTermination(t1, LONG_DELAY_MS);
523	>	awaitTermination(t2, LONG_DELAY_MS);
524	>	}
525	>
526	>
527	>	/**
528	>	* Fair Write lock succeeds if write locked by current thread even if
529	>	* other threads are waiting for writelock
530	>	*/
531	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
532	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
533	>	lock.writeLock().lock();
534	>	Thread t1 = newStartedThread(new CheckedRunnable() {
535	>	public void realRun() {
536	>	lock.writeLock().lock();
537	>	lock.writeLock().unlock();
538	>	}});
539	>	Thread t2 = newStartedThread(new CheckedRunnable() {
540	>	public void realRun() {
541	>	lock.writeLock().lock();
542	>	lock.writeLock().unlock();
543	>	}});
544	>
545	>	Thread.sleep(SHORT_DELAY_MS);
546	>	assertTrue(lock.isWriteLockedByCurrentThread());
547	>	assertEquals(1, lock.getWriteHoldCount());
548	>	lock.writeLock().lock();
549	>	assertEquals(2, lock.getWriteHoldCount());
550	>	lock.writeLock().unlock();
551	>	lock.writeLock().lock();
552	>	lock.writeLock().unlock();
553	>	lock.writeLock().unlock();
554	>	awaitTermination(t1, LONG_DELAY_MS);
555	>	awaitTermination(t2, LONG_DELAY_MS);
556	>	}
557
558
559		/**
560		* Read tryLock succeeds if readlocked but not writelocked
561		*/
562	<	public void testTryLockWhenReadLocked() {
563	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
564	<	lock.readLock().lock();
565	<	Thread t = new Thread(new Runnable() {
566	<	public void run() {
567	<	threadAssertTrue(lock.readLock().tryLock());
568	<	lock.readLock().unlock();
569	<	}
491	<	});
492	<	try {
493	<	t.start();
494	<	t.join();
495	<	lock.readLock().unlock();
496	<	} catch(Exception e){
497	<	unexpectedException();
498	<	}
499	<	}
562	>	public void testTryLockWhenReadLocked() throws InterruptedException {
563	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
564	>	lock.readLock().lock();
565	>	Thread t = newStartedThread(new CheckedRunnable() {
566	>	public void realRun() {
567	>	assertTrue(lock.readLock().tryLock());
568	>	lock.readLock().unlock();
569	>	}});
570
571	<
571	>	awaitTermination(t, LONG_DELAY_MS);
572	>	lock.readLock().unlock();
573	>	}
574
575		/**
576		* write tryLock fails when readlocked
577		*/
578	<	public void testWriteTryLockWhenReadLocked() {
579	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
580	<	lock.readLock().lock();
581	<	Thread t = new Thread(new Runnable() {
582	<	public void run() {
583	<	threadAssertFalse(lock.writeLock().tryLock());
584	<	}
585	<	});
586	<	try {
587	<	t.start();
588	<	t.join();
589	<	lock.readLock().unlock();
590	<	} catch(Exception e){
591	<	unexpectedException();
592	<	}
593	<	}
578	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
579	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
580	>	lock.readLock().lock();
581	>	Thread t = newStartedThread(new CheckedRunnable() {
582	>	public void realRun() {
583	>	assertFalse(lock.writeLock().tryLock());
584	>	}});
585	>
586	>	awaitTermination(t, LONG_DELAY_MS);
587	>	lock.readLock().unlock();
588	>	}
589	>
590	>
591	>	/**
592	>	* Fair Read tryLock succeeds if readlocked but not writelocked
593	>	*/
594	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
595	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
596	>	lock.readLock().lock();
597	>	Thread t = newStartedThread(new CheckedRunnable() {
598	>	public void realRun() {
599	>	assertTrue(lock.readLock().tryLock());
600	>	lock.readLock().unlock();
601	>	}});
602	>
603	>	awaitTermination(t, LONG_DELAY_MS);
604	>	lock.readLock().unlock();
605	>	}
606	>
607	>
608	>
609	>	/**
610	>	* Fair write tryLock fails when readlocked
611	>	*/
612	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
613	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
614	>	lock.readLock().lock();
615	>	Thread t = newStartedThread(new CheckedRunnable() {
616	>	public void realRun() {
617	>	assertFalse(lock.writeLock().tryLock());
618	>	}});
619	>
620	>	awaitTermination(t, LONG_DELAY_MS);
621	>	lock.readLock().unlock();
622	>	}
623	>
624
523	–
625
626		/**
627		* write timed tryLock times out if locked
628		*/
629	<	public void testWriteTryLock_Timeout() {
630	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	<	lock.writeLock().lock();
632	<	Thread t = new Thread(new Runnable() {
633	<	public void run() {
634	<	try {
635	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
636	<	} catch (Exception ex) {
637	<	threadUnexpectedException();
638	<	}
639	<	}
640	<	});
540	<	try {
541	<	t.start();
542	<	t.join();
543	<	lock.writeLock().unlock();
544	<	} catch(Exception e){
545	<	unexpectedException();
546	<	}
547	<	}
629	>	public void testWriteTryLock_Timeout() throws InterruptedException {
630	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631	>	lock.writeLock().lock();
632	>	Thread t = newStartedThread(new CheckedRunnable() {
633	>	public void realRun() throws InterruptedException {
634	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
635	>	}});
636	>
637	>	awaitTermination(t, LONG_DELAY_MS);
638	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
639	>	lock.writeLock().unlock();
640	>	}
641
642		/**
643		* read timed tryLock times out if write-locked
644		*/
645	<	public void testReadTryLock_Timeout() {
646	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
647	<	lock.writeLock().lock();
648	<	Thread t = new Thread(new Runnable() {
649	<	public void run() {
650	<	try {
651	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
652	<	} catch (Exception ex) {
653	<	threadUnexpectedException();
654	<	}
655	<	}
656	<	});
564	<	try {
565	<	t.start();
566	<	t.join();
567	<	lock.writeLock().unlock();
568	<	} catch(Exception e){
569	<	unexpectedException();
570	<	}
571	<	}
645	>	public void testReadTryLock_Timeout() throws InterruptedException {
646	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
647	>	lock.writeLock().lock();
648	>	Thread t = newStartedThread(new CheckedRunnable() {
649	>	public void realRun() throws InterruptedException {
650	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
651	>	}});
652	>
653	>	awaitTermination(t, LONG_DELAY_MS);
654	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
655	>	lock.writeLock().unlock();
656	>	}
657
658
659		/**
660		* write lockInterruptibly succeeds if lock free else is interruptible
661		*/
662	<	public void testWriteLockInterruptibly() {
663	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
664	<	try {
665	<	lock.writeLock().lockInterruptibly();
666	<	} catch(Exception e) {
667	<	unexpectedException();
668	<	}
669	<	Thread t = new Thread(new Runnable() {
670	<	public void run() {
671	<	try {
672	<	lock.writeLock().lockInterruptibly();
673	<	threadShouldThrow();
589	<	}
590	<	catch(InterruptedException success) {
591	<	}
592	<	}
593	<	});
594	<	try {
595	<	t.start();
596	<	t.interrupt();
597	<	t.join();
598	<	lock.writeLock().unlock();
599	<	} catch(Exception e){
600	<	unexpectedException();
601	<	}
662	>	public void testWriteLockInterruptibly() throws InterruptedException {
663	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
664	>	lock.writeLock().lockInterruptibly();
665	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
666	>	public void realRun() throws InterruptedException {
667	>	lock.writeLock().lockInterruptibly();
668	>	}});
669	>
670	>	Thread.sleep(SHORT_DELAY_MS);
671	>	t.interrupt();
672	>	awaitTermination(t, LONG_DELAY_MS);
673	>	releaseWriteLock(lock);
674		}
675
676		/**
677	<	*  read lockInterruptibly succeeds if lock free else is interruptible
677	>	* read lockInterruptibly succeeds if lock free else is interruptible
678		*/
679	<	public void testReadLockInterruptibly() {
680	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
681	<	try {
682	<	lock.writeLock().lockInterruptibly();
683	<	} catch(Exception e) {
684	<	unexpectedException();
685	<	}
686	<	Thread t = new Thread(new Runnable() {
687	<	public void run() {
688	<	try {
689	<	lock.readLock().lockInterruptibly();
690	<	threadShouldThrow();
619	<	}
620	<	catch(InterruptedException success) {
621	<	}
622	<	}
623	<	});
624	<	try {
625	<	t.start();
626	<	t.interrupt();
627	<	t.join();
628	<	lock.writeLock().unlock();
629	<	} catch(Exception e){
630	<	unexpectedException();
631	<	}
679	>	public void testReadLockInterruptibly() throws InterruptedException {
680	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
681	>	lock.writeLock().lockInterruptibly();
682	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
683	>	public void realRun() throws InterruptedException {
684	>	lock.readLock().lockInterruptibly();
685	>	}});
686	>
687	>	Thread.sleep(SHORT_DELAY_MS);
688	>	t.interrupt();
689	>	awaitTermination(t, LONG_DELAY_MS);
690	>	releaseWriteLock(lock);
691		}
692
693		/**
694		* Calling await without holding lock throws IllegalMonitorStateException
695		*/
696	<	public void testAwait_IllegalMonitor() {
697	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
696	>	public void testAwait_IllegalMonitor() throws InterruptedException {
697	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
698		final Condition c = lock.writeLock().newCondition();
699		try {
700		c.await();
701		shouldThrow();
702	<	}
644	<	catch (IllegalMonitorStateException success) {
645	<	}
646	<	catch (Exception ex) {
647	<	shouldThrow();
648	<	}
702	>	} catch (IllegalMonitorStateException success) {}
703		}
704
705		/**
706		* Calling signal without holding lock throws IllegalMonitorStateException
707		*/
708		public void testSignal_IllegalMonitor() {
709	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
709	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
710		final Condition c = lock.writeLock().newCondition();
711		try {
712		c.signal();
713		shouldThrow();
714	<	}
661	<	catch (IllegalMonitorStateException success) {
662	<	}
663	<	catch (Exception ex) {
664	<	unexpectedException();
665	<	}
714	>	} catch (IllegalMonitorStateException success) {}
715		}
716
717		/**
718		* awaitNanos without a signal times out
719		*/
720	<	public void testAwaitNanos_Timeout() {
721	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
720	>	public void testAwaitNanos_Timeout() throws InterruptedException {
721	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722		final Condition c = lock.writeLock().newCondition();
723	<	try {
724	<	lock.writeLock().lock();
725	<	long t = c.awaitNanos(100);
726	<	assertTrue(t <= 0);
727	<	lock.writeLock().unlock();
679	<	}
680	<	catch (Exception ex) {
681	<	unexpectedException();
682	<	}
723	>
724	>	lock.writeLock().lock();
725	>	long t = c.awaitNanos(100);
726	>	assertTrue(t <= 0);
727	>	lock.writeLock().unlock();
728		}
729
730
731		/**
732	<	*  timed await without a signal times out
732	>	* timed await without a signal times out
733		*/
734	<	public void testAwait_Timeout() {
735	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
734	>	public void testAwait_Timeout() throws InterruptedException {
735	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
736		final Condition c = lock.writeLock().newCondition();
737	<	try {
738	<	lock.writeLock().lock();
739	<	lock.writeLock().unlock();
695	<	}
696	<	catch (Exception ex) {
697	<	unexpectedException();
698	<	}
737	>	lock.writeLock().lock();
738	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
739	>	lock.writeLock().unlock();
740		}
741
742		/**
743		* awaitUntil without a signal times out
744		*/
745	<	public void testAwaitUntil_Timeout() {
746	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
745	>	public void testAwaitUntil_Timeout() throws InterruptedException {
746	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
747		final Condition c = lock.writeLock().newCondition();
748	<	try {
749	<	lock.writeLock().lock();
750	<	java.util.Date d = new java.util.Date();
751	<	lock.writeLock().unlock();
711	<	}
712	<	catch (Exception ex) {
713	<	unexpectedException();
714	<	}
748	>	lock.writeLock().lock();
749	>	java.util.Date d = new java.util.Date();
750	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
751	>	lock.writeLock().unlock();
752		}
753
754		/**
755		* await returns when signalled
756		*/
757	<	public void testAwait() {
758	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
757	>	public void testAwait() throws InterruptedException {
758	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
759		final Condition c = lock.writeLock().newCondition();
760	<	Thread t = new Thread(new Runnable() {
761	<	public void run() {
762	<	try {
763	<	lock.writeLock().lock();
764	<	c.await();
765	<	lock.writeLock().unlock();
766	<	}
767	<	catch(InterruptedException e) {
768	<	threadUnexpectedException();
769	<	}
770	<	}
771	<	});
760	>	Thread t = newStartedThread(new CheckedRunnable() {
761	>	public void realRun() throws InterruptedException {
762	>	lock.writeLock().lock();
763	>	c.await();
764	>	lock.writeLock().unlock();
765	>	}});
766	>
767	>	Thread.sleep(SHORT_DELAY_MS);
768	>	lock.writeLock().lock();
769	>	c.signal();
770	>	lock.writeLock().unlock();
771	>	awaitTermination(t, LONG_DELAY_MS);
772	>	}
773
774	<	try {
775	<	t.start();
776	<	Thread.sleep(SHORT_DELAY_MS);
777	<	lock.writeLock().lock();
778	<	c.signal();
779	<	lock.writeLock().unlock();
780	<	t.join(SHORT_DELAY_MS);
781	<	assertFalse(t.isAlive());
774	>	/** A helper class for uninterruptible wait tests */
775	>	class UninterruptableThread extends Thread {
776	>	private Lock lock;
777	>	private Condition c;
778	>
779	>	public volatile boolean canAwake = false;
780	>	public volatile boolean interrupted = false;
781	>	public volatile boolean lockStarted = false;
782	>
783	>	public UninterruptableThread(Lock lock, Condition c) {
784	>	this.lock = lock;
785	>	this.c = c;
786		}
787	<	catch (Exception ex) {
788	<	unexpectedException();
787	>
788	>	public synchronized void run() {
789	>	lock.lock();
790	>	lockStarted = true;
791	>
792	>	while (!canAwake) {
793	>	c.awaitUninterruptibly();
794	>	}
795	>
796	>	interrupted = isInterrupted();
797	>	lock.unlock();
798		}
799		}
800
801		/**
802		* awaitUninterruptibly doesn't abort on interrupt
803		*/
804	<	public void testAwaitUninterruptibly() {
805	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
804	>	public void testAwaitUninterruptibly() throws InterruptedException {
805	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
806		final Condition c = lock.writeLock().newCondition();
807	<	Thread t = new Thread(new Runnable() {
808	<	public void run() {
809	<	lock.writeLock().lock();
759	<	c.awaitUninterruptibly();
760	<	lock.writeLock().unlock();
761	<	}
762	<	});
807	>	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
808	>
809	>	thread.start();
810
811	+	while (!thread.lockStarted) {
812	+	Thread.sleep(100);
813	+	}
814	+
815	+	lock.writeLock().lock();
816		try {
817	<	t.start();
818	<	Thread.sleep(SHORT_DELAY_MS);
767	<	t.interrupt();
768	<	lock.writeLock().lock();
817	>	thread.interrupt();
818	>	thread.canAwake = true;
819		c.signal();
820	+	} finally {
821		lock.writeLock().unlock();
771	–	assert(t.isInterrupted());
772	–	t.join(SHORT_DELAY_MS);
773	–	assertFalse(t.isAlive());
774	–	}
775	–	catch (Exception ex) {
776	–	unexpectedException();
822		}
823	+
824	+	awaitTermination(thread, LONG_DELAY_MS);
825	+	assertTrue(thread.interrupted);
826		}
827
828		/**
829		* await is interruptible
830		*/
831	<	public void testAwait_Interrupt() {
832	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
831	>	public void testAwait_Interrupt() throws InterruptedException {
832	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
833		final Condition c = lock.writeLock().newCondition();
834	<	Thread t = new Thread(new Runnable() {
835	<	public void run() {
836	<	try {
837	<	lock.writeLock().lock();
838	<	c.await();
839	<	lock.writeLock().unlock();
840	<	threadShouldThrow();
841	<	}
842	<	catch(InterruptedException success) {
843	<	}
844	<	}
845	<	});
846	<
847	<	try {
848	<	t.start();
849	<	Thread.sleep(SHORT_DELAY_MS);
802	<	t.interrupt();
803	<	t.join(SHORT_DELAY_MS);
804	<	assertFalse(t.isAlive());
805	<	}
806	<	catch (Exception ex) {
807	<	unexpectedException();
808	<	}
834	>	final CountDownLatch locked = new CountDownLatch(1);
835	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
836	>	public void realRun() throws InterruptedException {
837	>	lock.writeLock().lock();
838	>	assertTrue(lock.isWriteLocked());
839	>	locked.countDown();
840	>	try { c.await(); }
841	>	finally { lock.writeLock().unlock(); }
842	>	}});
843	>
844	>	locked.await();
845	>	while (lock.isWriteLocked())
846	>	Thread.yield();
847	>	t.interrupt();
848	>	awaitTermination(t, LONG_DELAY_MS);
849	>	assertFalse(lock.isWriteLocked());
850		}
851
852		/**
853		* awaitNanos is interruptible
854		*/
855	<	public void testAwaitNanos_Interrupt() {
856	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
855	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
856	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
857		final Condition c = lock.writeLock().newCondition();
858	<	Thread t = new Thread(new Runnable() {
859	<	public void run() {
860	<	try {
861	<	lock.writeLock().lock();
862	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
863	<	lock.writeLock().unlock();
864	<	threadShouldThrow();
865	<	}
866	<	catch(InterruptedException success) {
867	<	}
868	<	}
869	<	});
870	<
871	<	try {
872	<	t.start();
873	<	Thread.sleep(SHORT_DELAY_MS);
833	<	t.interrupt();
834	<	t.join(SHORT_DELAY_MS);
835	<	assertFalse(t.isAlive());
836	<	}
837	<	catch (Exception ex) {
838	<	unexpectedException();
839	<	}
858	>	final CountDownLatch locked = new CountDownLatch(1);
859	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	lock.writeLock().lock();
862	>	assertTrue(lock.isWriteLocked());
863	>	locked.countDown();
864	>	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
865	>	finally { lock.writeLock().unlock(); }
866	>	}});
867	>
868	>	locked.await();
869	>	while (lock.isWriteLocked())
870	>	Thread.yield();
871	>	t.interrupt();
872	>	awaitTermination(t, LONG_DELAY_MS);
873	>	assertFalse(lock.isWriteLocked());
874		}
875
876		/**
877		* awaitUntil is interruptible
878		*/
879	<	public void testAwaitUntil_Interrupt() {
880	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
879	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
880	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
881		final Condition c = lock.writeLock().newCondition();
882	<	Thread t = new Thread(new Runnable() {
883	<	public void run() {
884	<	try {
885	<	lock.writeLock().lock();
886	<	java.util.Date d = new java.util.Date();
887	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
888	<	lock.writeLock().unlock();
889	<	threadShouldThrow();
890	<	}
891	<	catch(InterruptedException success) {
892	<	}
893	<	}
894	<	});
895	<
896	<	try {
897	<	t.start();
898	<	Thread.sleep(SHORT_DELAY_MS);
865	<	t.interrupt();
866	<	t.join(SHORT_DELAY_MS);
867	<	assertFalse(t.isAlive());
868	<	}
869	<	catch (Exception ex) {
870	<	unexpectedException();
871	<	}
882	>	final CountDownLatch locked = new CountDownLatch(1);
883	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
884	>	public void realRun() throws InterruptedException {
885	>	lock.writeLock().lock();
886	>	assertTrue(lock.isWriteLocked());
887	>	locked.countDown();
888	>	java.util.Date d = new java.util.Date();
889	>	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
890	>	finally { lock.writeLock().unlock(); }
891	>	}});
892	>
893	>	locked.await();
894	>	while (lock.isWriteLocked())
895	>	Thread.yield();
896	>	t.interrupt();
897	>	awaitTermination(t, LONG_DELAY_MS);
898	>	assertFalse(lock.isWriteLocked());
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();
913	<	}
914	<	catch(InterruptedException e) {
915	<	threadUnexpectedException();
916	<	}
917	<	}
918	<	});
919	<
920	<	Thread t2 = new Thread(new Runnable() {
921	<	public void run() {
922	<	try {
923	<	lock.writeLock().lock();
924	<	c.await();
925	<	lock.writeLock().unlock();
926	<	}
900	<	catch(InterruptedException e) {
901	<	threadUnexpectedException();
902	<	}
903	<	}
904	<	});
905	<
906	<	try {
907	<	t1.start();
908	<	t2.start();
909	<	Thread.sleep(SHORT_DELAY_MS);
910	<	lock.writeLock().lock();
911	<	c.signalAll();
912	<	lock.writeLock().unlock();
913	<	t1.join(SHORT_DELAY_MS);
914	<	t2.join(SHORT_DELAY_MS);
915	<	assertFalse(t1.isAlive());
916	<	assertFalse(t2.isAlive());
917	<	}
918	<	catch (Exception ex) {
919	<	unexpectedException();
920	<	}
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	>	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	>	awaitTermination(t1, LONG_DELAY_MS);
926	>	awaitTermination(t2, LONG_DELAY_MS);
927		}
928
929		/**
930		* A serialized lock deserializes as unlocked
931		*/
932	<	public void testSerialization() {
932	>	public void testSerialization() throws Exception {
933		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
934		l.readLock().lock();
935		l.readLock().unlock();
936
937	<	try {
938	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
939	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
940	<	out.writeObject(l);
941	<	out.close();
942	<
943	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
944	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
945	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
946	<	r.readLock().lock();
941	<	r.readLock().unlock();
942	<	} catch(Exception e){
943	<	e.printStackTrace();
944	<	unexpectedException();
945	<	}
937	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
938	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
939	>	out.writeObject(l);
940	>	out.close();
941	>
942	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
943	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
944	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
945	>	r.readLock().lock();
946	>	r.readLock().unlock();
947		}
948
949		/**
950		* hasQueuedThreads reports whether there are waiting threads
951		*/
952	<	public void testhasQueuedThreads() {
953	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
952	>	public void testhasQueuedThreads() throws InterruptedException {
953	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
954		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
955		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
956	<	try {
957	<	assertFalse(lock.hasQueuedThreads());
958	<	lock.writeLock().lock();
959	<	t1.start();
960	<	Thread.sleep(SHORT_DELAY_MS);
961	<	assertTrue(lock.hasQueuedThreads());
962	<	t2.start();
963	<	Thread.sleep(SHORT_DELAY_MS);
964	<	assertTrue(lock.hasQueuedThreads());
965	<	t1.interrupt();
966	<	Thread.sleep(SHORT_DELAY_MS);
967	<	assertTrue(lock.hasQueuedThreads());
968	<	lock.writeLock().unlock();
969	<	Thread.sleep(SHORT_DELAY_MS);
970	<	assertFalse(lock.hasQueuedThreads());
971	<	t1.join();
972	<	t2.join();
972	<	} catch(Exception e){
973	<	unexpectedException();
974	<	}
975	<	}
956	>	assertFalse(lock.hasQueuedThreads());
957	>	lock.writeLock().lock();
958	>	t1.start();
959	>	Thread.sleep(SHORT_DELAY_MS);
960	>	assertTrue(lock.hasQueuedThreads());
961	>	t2.start();
962	>	Thread.sleep(SHORT_DELAY_MS);
963	>	assertTrue(lock.hasQueuedThreads());
964	>	t1.interrupt();
965	>	Thread.sleep(SHORT_DELAY_MS);
966	>	assertTrue(lock.hasQueuedThreads());
967	>	lock.writeLock().unlock();
968	>	Thread.sleep(SHORT_DELAY_MS);
969	>	assertFalse(lock.hasQueuedThreads());
970	>	awaitTermination(t1, LONG_DELAY_MS);
971	>	awaitTermination(t2, LONG_DELAY_MS);
972	>	}
973
974		/**
975		* hasQueuedThread(null) throws NPE
976		*/
977	<	public void testHasQueuedThreadNPE() {
978	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
977	>	public void testHasQueuedThreadNPE() {
978	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
979		try {
980		sync.hasQueuedThread(null);
981		shouldThrow();
982	<	} catch (NullPointerException success) {
986	<	}
982	>	} catch (NullPointerException success) {}
983		}
984
985		/**
986		* hasQueuedThread reports whether a thread is queued.
987		*/
988	<	public void testHasQueuedThread() {
989	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
988	>	public void testHasQueuedThread() throws InterruptedException {
989	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
990		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
991		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
992	<	try {
993	<	assertFalse(sync.hasQueuedThread(t1));
994	<	assertFalse(sync.hasQueuedThread(t2));
995	<	sync.writeLock().lock();
996	<	t1.start();
997	<	Thread.sleep(SHORT_DELAY_MS);
998	<	assertTrue(sync.hasQueuedThread(t1));
999	<	t2.start();
1000	<	Thread.sleep(SHORT_DELAY_MS);
1001	<	assertTrue(sync.hasQueuedThread(t1));
1002	<	assertTrue(sync.hasQueuedThread(t2));
1003	<	t1.interrupt();
1004	<	Thread.sleep(SHORT_DELAY_MS);
1005	<	assertFalse(sync.hasQueuedThread(t1));
1006	<	assertTrue(sync.hasQueuedThread(t2));
1007	<	sync.writeLock().unlock();
1008	<	Thread.sleep(SHORT_DELAY_MS);
1009	<	assertFalse(sync.hasQueuedThread(t1));
1010	<	Thread.sleep(SHORT_DELAY_MS);
1011	<	assertFalse(sync.hasQueuedThread(t2));
1012	<	t1.join();
1013	<	t2.join();
1018	<	} catch(Exception e){
1019	<	unexpectedException();
1020	<	}
1021	<	}
992	>	assertFalse(sync.hasQueuedThread(t1));
993	>	assertFalse(sync.hasQueuedThread(t2));
994	>	sync.writeLock().lock();
995	>	t1.start();
996	>	Thread.sleep(SHORT_DELAY_MS);
997	>	assertTrue(sync.hasQueuedThread(t1));
998	>	t2.start();
999	>	Thread.sleep(SHORT_DELAY_MS);
1000	>	assertTrue(sync.hasQueuedThread(t1));
1001	>	assertTrue(sync.hasQueuedThread(t2));
1002	>	t1.interrupt();
1003	>	Thread.sleep(SHORT_DELAY_MS);
1004	>	assertFalse(sync.hasQueuedThread(t1));
1005	>	assertTrue(sync.hasQueuedThread(t2));
1006	>	sync.writeLock().unlock();
1007	>	Thread.sleep(SHORT_DELAY_MS);
1008	>	assertFalse(sync.hasQueuedThread(t1));
1009	>	Thread.sleep(SHORT_DELAY_MS);
1010	>	assertFalse(sync.hasQueuedThread(t2));
1011	>	awaitTermination(t1, LONG_DELAY_MS);
1012	>	awaitTermination(t2, LONG_DELAY_MS);
1013	>	}
1014
1015
1016		/**
1017		* getQueueLength reports number of waiting threads
1018		*/
1019	<	public void testGetQueueLength() {
1020	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1019	>	public void testGetQueueLength() throws InterruptedException {
1020	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1021		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1022		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1023	<	try {
1024	<	assertEquals(0, lock.getQueueLength());
1025	<	lock.writeLock().lock();
1026	<	t1.start();
1027	<	Thread.sleep(SHORT_DELAY_MS);
1028	<	assertEquals(1, lock.getQueueLength());
1029	<	t2.start();
1030	<	Thread.sleep(SHORT_DELAY_MS);
1031	<	assertEquals(2, lock.getQueueLength());
1032	<	t1.interrupt();
1033	<	Thread.sleep(SHORT_DELAY_MS);
1034	<	assertEquals(1, lock.getQueueLength());
1035	<	lock.writeLock().unlock();
1036	<	Thread.sleep(SHORT_DELAY_MS);
1037	<	assertEquals(0, lock.getQueueLength());
1038	<	t1.join();
1039	<	t2.join();
1048	<	} catch(Exception e){
1049	<	unexpectedException();
1050	<	}
1051	<	}
1023	>	assertEquals(0, lock.getQueueLength());
1024	>	lock.writeLock().lock();
1025	>	t1.start();
1026	>	Thread.sleep(SHORT_DELAY_MS);
1027	>	assertEquals(1, lock.getQueueLength());
1028	>	t2.start();
1029	>	Thread.sleep(SHORT_DELAY_MS);
1030	>	assertEquals(2, lock.getQueueLength());
1031	>	t1.interrupt();
1032	>	Thread.sleep(SHORT_DELAY_MS);
1033	>	assertEquals(1, lock.getQueueLength());
1034	>	lock.writeLock().unlock();
1035	>	Thread.sleep(SHORT_DELAY_MS);
1036	>	assertEquals(0, lock.getQueueLength());
1037	>	awaitTermination(t1, LONG_DELAY_MS);
1038	>	awaitTermination(t2, LONG_DELAY_MS);
1039	>	}
1040
1041		/**
1042		* getQueuedThreads includes waiting threads
1043		*/
1044	<	public void testGetQueuedThreads() {
1045	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1044	>	public void testGetQueuedThreads() throws InterruptedException {
1045	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1046		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1047		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1048	<	try {
1049	<	assertTrue(lock.getQueuedThreads().isEmpty());
1050	<	lock.writeLock().lock();
1051	<	assertTrue(lock.getQueuedThreads().isEmpty());
1052	<	t1.start();
1053	<	Thread.sleep(SHORT_DELAY_MS);
1054	<	assertTrue(lock.getQueuedThreads().contains(t1));
1055	<	t2.start();
1056	<	Thread.sleep(SHORT_DELAY_MS);
1057	<	assertTrue(lock.getQueuedThreads().contains(t1));
1058	<	assertTrue(lock.getQueuedThreads().contains(t2));
1059	<	t1.interrupt();
1060	<	Thread.sleep(SHORT_DELAY_MS);
1061	<	assertFalse(lock.getQueuedThreads().contains(t1));
1062	<	assertTrue(lock.getQueuedThreads().contains(t2));
1063	<	lock.writeLock().unlock();
1064	<	Thread.sleep(SHORT_DELAY_MS);
1065	<	assertTrue(lock.getQueuedThreads().isEmpty());
1066	<	t1.join();
1067	<	t2.join();
1080	<	} catch(Exception e){
1081	<	unexpectedException();
1082	<	}
1083	<	}
1048	>	assertTrue(lock.getQueuedThreads().isEmpty());
1049	>	lock.writeLock().lock();
1050	>	assertTrue(lock.getQueuedThreads().isEmpty());
1051	>	t1.start();
1052	>	Thread.sleep(SHORT_DELAY_MS);
1053	>	assertTrue(lock.getQueuedThreads().contains(t1));
1054	>	t2.start();
1055	>	Thread.sleep(SHORT_DELAY_MS);
1056	>	assertTrue(lock.getQueuedThreads().contains(t1));
1057	>	assertTrue(lock.getQueuedThreads().contains(t2));
1058	>	t1.interrupt();
1059	>	Thread.sleep(SHORT_DELAY_MS);
1060	>	assertFalse(lock.getQueuedThreads().contains(t1));
1061	>	assertTrue(lock.getQueuedThreads().contains(t2));
1062	>	lock.writeLock().unlock();
1063	>	Thread.sleep(SHORT_DELAY_MS);
1064	>	assertTrue(lock.getQueuedThreads().isEmpty());
1065	>	awaitTermination(t1, LONG_DELAY_MS);
1066	>	awaitTermination(t2, LONG_DELAY_MS);
1067	>	}
1068
1069		/**
1070		* hasWaiters throws NPE if null
1071		*/
1072		public void testHasWaitersNPE() {
1073	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1073	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1074		try {
1075		lock.hasWaiters(null);
1076		shouldThrow();
1077	<	} catch (NullPointerException success) {
1094	<	} catch (Exception ex) {
1095	<	unexpectedException();
1096	<	}
1077	>	} catch (NullPointerException success) {}
1078		}
1079
1080		/**
1081		* getWaitQueueLength throws NPE if null
1082		*/
1083		public void testGetWaitQueueLengthNPE() {
1084	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1084	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1085		try {
1086		lock.getWaitQueueLength(null);
1087		shouldThrow();
1088	<	} catch (NullPointerException success) {
1108	<	} catch (Exception ex) {
1109	<	unexpectedException();
1110	<	}
1088	>	} catch (NullPointerException success) {}
1089		}
1090
1091
#	Line 1115 | Line 1093 | public class ReentrantReadWriteLockTest
1093		* getWaitingThreads throws NPE if null
1094		*/
1095		public void testGetWaitingThreadsNPE() {
1096	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1096	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1097		try {
1098		lock.getWaitingThreads(null);
1099		shouldThrow();
1100	<	} catch (NullPointerException success) {
1123	<	} catch (Exception ex) {
1124	<	unexpectedException();
1125	<	}
1100	>	} catch (NullPointerException success) {}
1101		}
1102
1103		/**
1104		* hasWaiters throws IAE if not owned
1105		*/
1106		public void testHasWaitersIAE() {
1107	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1108	<	final Condition c = (lock.writeLock().newCondition());
1109	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1107	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1108	>	final Condition c = lock.writeLock().newCondition();
1109	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1110		try {
1111		lock2.hasWaiters(c);
1112		shouldThrow();
1113	<	} catch (IllegalArgumentException success) {
1139	<	} catch (Exception ex) {
1140	<	unexpectedException();
1141	<	}
1113	>	} catch (IllegalArgumentException success) {}
1114		}
1115
1116		/**
1117		* hasWaiters throws IMSE if not locked
1118		*/
1119		public void testHasWaitersIMSE() {
1120	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1121	<	final Condition c = (lock.writeLock().newCondition());
1120	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1121	>	final Condition c = lock.writeLock().newCondition();
1122		try {
1123		lock.hasWaiters(c);
1124		shouldThrow();
1125	<	} catch (IllegalMonitorStateException success) {
1154	<	} catch (Exception ex) {
1155	<	unexpectedException();
1156	<	}
1125	>	} catch (IllegalMonitorStateException success) {}
1126		}
1127
1128
#	Line 1161 | Line 1130 | public class ReentrantReadWriteLockTest
1130		* getWaitQueueLength throws IAE if not owned
1131		*/
1132		public void testGetWaitQueueLengthIAE() {
1133	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1134	<	final Condition c = (lock.writeLock().newCondition());
1135	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1133	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1134	>	final Condition c = lock.writeLock().newCondition();
1135	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1136		try {
1137		lock2.getWaitQueueLength(c);
1138		shouldThrow();
1139	<	} catch (IllegalArgumentException success) {
1171	<	} catch (Exception ex) {
1172	<	unexpectedException();
1173	<	}
1139	>	} catch (IllegalArgumentException success) {}
1140		}
1141
1142		/**
1143		* getWaitQueueLength throws IMSE if not locked
1144		*/
1145		public void testGetWaitQueueLengthIMSE() {
1146	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1147	<	final Condition c = (lock.writeLock().newCondition());
1146	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1147	>	final Condition c = lock.writeLock().newCondition();
1148		try {
1149		lock.getWaitQueueLength(c);
1150		shouldThrow();
1151	<	} catch (IllegalMonitorStateException success) {
1186	<	} catch (Exception ex) {
1187	<	unexpectedException();
1188	<	}
1151	>	} catch (IllegalMonitorStateException success) {}
1152		}
1153
1154
#	Line 1193 | Line 1156 | public class ReentrantReadWriteLockTest
1156		* getWaitingThreads throws IAE if not owned
1157		*/
1158		public void testGetWaitingThreadsIAE() {
1159	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1160	<	final Condition c = (lock.writeLock().newCondition());
1161	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1159	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1160	>	final Condition c = lock.writeLock().newCondition();
1161	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1162		try {
1163		lock2.getWaitingThreads(c);
1164		shouldThrow();
1165	<	} catch (IllegalArgumentException success) {
1203	<	} catch (Exception ex) {
1204	<	unexpectedException();
1205	<	}
1165	>	} catch (IllegalArgumentException success) {}
1166		}
1167
1168		/**
1169		* getWaitingThreads throws IMSE if not locked
1170		*/
1171		public void testGetWaitingThreadsIMSE() {
1172	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1173	<	final Condition c = (lock.writeLock().newCondition());
1172	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1173	>	final Condition c = lock.writeLock().newCondition();
1174		try {
1175		lock.getWaitingThreads(c);
1176		shouldThrow();
1177	<	} catch (IllegalMonitorStateException success) {
1218	<	} catch (Exception ex) {
1219	<	unexpectedException();
1220	<	}
1177	>	} catch (IllegalMonitorStateException success) {}
1178		}
1179
1180
1181		/**
1182		* hasWaiters returns true when a thread is waiting, else false
1183		*/
1184	<	public void testHasWaiters() {
1185	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1186	<	final Condition c = (lock.writeLock().newCondition());
1187	<	Thread t = new Thread(new Runnable() {
1188	<	public void run() {
1189	<	try {
1190	<	lock.writeLock().lock();
1191	<	threadAssertFalse(lock.hasWaiters(c));
1192	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1193	<	c.await();
1194	<	lock.writeLock().unlock();
1195	<	}
1196	<	catch(InterruptedException e) {
1197	<	threadUnexpectedException();
1198	<	}
1199	<	}
1200	<	});
1201	<
1202	<	try {
1203	<	t.start();
1204	<	Thread.sleep(SHORT_DELAY_MS);
1205	<	lock.writeLock().lock();
1206	<	assertTrue(lock.hasWaiters(c));
1207	<	assertEquals(1, lock.getWaitQueueLength(c));
1251	<	c.signal();
1252	<	lock.writeLock().unlock();
1253	<	Thread.sleep(SHORT_DELAY_MS);
1254	<	lock.writeLock().lock();
1255	<	assertFalse(lock.hasWaiters(c));
1256	<	assertEquals(0, lock.getWaitQueueLength(c));
1257	<	lock.writeLock().unlock();
1258	<	t.join(SHORT_DELAY_MS);
1259	<	assertFalse(t.isAlive());
1260	<	}
1261	<	catch (Exception ex) {
1262	<	unexpectedException();
1263	<	}
1184	>	public void testHasWaiters() throws InterruptedException {
1185	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1186	>	final Condition c = lock.writeLock().newCondition();
1187	>	Thread t = newStartedThread(new CheckedRunnable() {
1188	>	public void realRun() throws InterruptedException {
1189	>	lock.writeLock().lock();
1190	>	assertFalse(lock.hasWaiters(c));
1191	>	assertEquals(0, lock.getWaitQueueLength(c));
1192	>	c.await();
1193	>	lock.writeLock().unlock();
1194	>	}});
1195	>
1196	>	Thread.sleep(SHORT_DELAY_MS);
1197	>	lock.writeLock().lock();
1198	>	assertTrue(lock.hasWaiters(c));
1199	>	assertEquals(1, lock.getWaitQueueLength(c));
1200	>	c.signal();
1201	>	lock.writeLock().unlock();
1202	>	Thread.sleep(SHORT_DELAY_MS);
1203	>	lock.writeLock().lock();
1204	>	assertFalse(lock.hasWaiters(c));
1205	>	assertEquals(0, lock.getWaitQueueLength(c));
1206	>	lock.writeLock().unlock();
1207	>	awaitTermination(t, LONG_DELAY_MS);
1208		}
1209
1210		/**
1211		* getWaitQueueLength returns number of waiting threads
1212		*/
1213	<	public void testGetWaitQueueLength() {
1214	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1215	<	final Condition c = (lock.writeLock().newCondition());
1216	<	Thread t = new Thread(new Runnable() {
1217	<	public void run() {
1218	<	try {
1219	<	lock.writeLock().lock();
1220	<	threadAssertFalse(lock.hasWaiters(c));
1221	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1222	<	c.await();
1223	<	lock.writeLock().unlock();
1224	<	}
1225	<	catch(InterruptedException e) {
1226	<	threadUnexpectedException();
1227	<	}
1228	<	}
1229	<	});
1230	<
1231	<	try {
1232	<	t.start();
1233	<	Thread.sleep(SHORT_DELAY_MS);
1234	<	lock.writeLock().lock();
1235	<	assertTrue(lock.hasWaiters(c));
1236	<	assertEquals(1, lock.getWaitQueueLength(c));
1293	<	c.signal();
1294	<	lock.writeLock().unlock();
1295	<	Thread.sleep(SHORT_DELAY_MS);
1296	<	lock.writeLock().lock();
1297	<	assertFalse(lock.hasWaiters(c));
1298	<	assertEquals(0, lock.getWaitQueueLength(c));
1299	<	lock.writeLock().unlock();
1300	<	t.join(SHORT_DELAY_MS);
1301	<	assertFalse(t.isAlive());
1302	<	}
1303	<	catch (Exception ex) {
1304	<	unexpectedException();
1305	<	}
1213	>	public void testGetWaitQueueLength() throws InterruptedException {
1214	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1215	>	final Condition c = lock.writeLock().newCondition();
1216	>	Thread t = newStartedThread(new CheckedRunnable() {
1217	>	public void realRun() throws InterruptedException {
1218	>	lock.writeLock().lock();
1219	>	assertFalse(lock.hasWaiters(c));
1220	>	assertEquals(0, lock.getWaitQueueLength(c));
1221	>	c.await();
1222	>	lock.writeLock().unlock();
1223	>	}});
1224	>
1225	>	Thread.sleep(SHORT_DELAY_MS);
1226	>	lock.writeLock().lock();
1227	>	assertTrue(lock.hasWaiters(c));
1228	>	assertEquals(1, lock.getWaitQueueLength(c));
1229	>	c.signal();
1230	>	lock.writeLock().unlock();
1231	>	Thread.sleep(SHORT_DELAY_MS);
1232	>	lock.writeLock().lock();
1233	>	assertFalse(lock.hasWaiters(c));
1234	>	assertEquals(0, lock.getWaitQueueLength(c));
1235	>	lock.writeLock().unlock();
1236	>	awaitTermination(t, LONG_DELAY_MS);
1237		}
1238
1239
1240		/**
1241		* getWaitingThreads returns only and all waiting threads
1242		*/
1243	<	public void testGetWaitingThreads() {
1244	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1243	>	public void testGetWaitingThreads() throws InterruptedException {
1244	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1245		final Condition c = lock.writeLock().newCondition();
1246	<	Thread t1 = new Thread(new Runnable() {
1247	<	public void run() {
1248	<	try {
1249	<	lock.writeLock().lock();
1250	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1251	<	c.await();
1252	<	lock.writeLock().unlock();
1253	<	}
1254	<	catch(InterruptedException e) {
1255	<	threadUnexpectedException();
1256	<	}
1257	<	}
1258	<	});
1259	<
1260	<	Thread t2 = new Thread(new Runnable() {
1330	<	public void run() {
1331	<	try {
1332	<	lock.writeLock().lock();
1333	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1334	<	c.await();
1335	<	lock.writeLock().unlock();
1336	<	}
1337	<	catch(InterruptedException e) {
1338	<	threadUnexpectedException();
1339	<	}
1340	<	}
1341	<	});
1246	>	Thread t1 = new Thread(new CheckedRunnable() {
1247	>	public void realRun() throws InterruptedException {
1248	>	lock.writeLock().lock();
1249	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1250	>	c.await();
1251	>	lock.writeLock().unlock();
1252	>	}});
1253	>
1254	>	Thread t2 = new Thread(new CheckedRunnable() {
1255	>	public void realRun() throws InterruptedException {
1256	>	lock.writeLock().lock();
1257	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1258	>	c.await();
1259	>	lock.writeLock().unlock();
1260	>	}});
1261
1262	<	try {
1263	<	lock.writeLock().lock();
1264	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1265	<	lock.writeLock().unlock();
1266	<	t1.start();
1267	<	Thread.sleep(SHORT_DELAY_MS);
1268	<	t2.start();
1269	<	Thread.sleep(SHORT_DELAY_MS);
1270	<	lock.writeLock().lock();
1271	<	assertTrue(lock.hasWaiters(c));
1272	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1273	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1274	<	c.signalAll();
1275	<	lock.writeLock().unlock();
1276	<	Thread.sleep(SHORT_DELAY_MS);
1277	<	lock.writeLock().lock();
1278	<	assertFalse(lock.hasWaiters(c));
1279	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1280	<	lock.writeLock().unlock();
1281	<	t1.join(SHORT_DELAY_MS);
1363	<	t2.join(SHORT_DELAY_MS);
1364	<	assertFalse(t1.isAlive());
1365	<	assertFalse(t2.isAlive());
1366	<	}
1367	<	catch (Exception ex) {
1368	<	unexpectedException();
1369	<	}
1262	>	lock.writeLock().lock();
1263	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1264	>	lock.writeLock().unlock();
1265	>	t1.start();
1266	>	Thread.sleep(SHORT_DELAY_MS);
1267	>	t2.start();
1268	>	Thread.sleep(SHORT_DELAY_MS);
1269	>	lock.writeLock().lock();
1270	>	assertTrue(lock.hasWaiters(c));
1271	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1272	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1273	>	c.signalAll();
1274	>	lock.writeLock().unlock();
1275	>	Thread.sleep(SHORT_DELAY_MS);
1276	>	lock.writeLock().lock();
1277	>	assertFalse(lock.hasWaiters(c));
1278	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1279	>	lock.writeLock().unlock();
1280	>	awaitTermination(t1, LONG_DELAY_MS);
1281	>	awaitTermination(t2, LONG_DELAY_MS);
1282		}
1283
1284		/**

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