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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 1.53 by jsr166, Mon May 2 00:49:26 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 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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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	>	awaitTermination(t, LONG_DELAY_MS);
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();
350	<	t1.join(MEDIUM_DELAY_MS);
351	<	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	>	awaitTermination(t1, LONG_DELAY_MS);
332	>	awaitTermination(t2, LONG_DELAY_MS);
333	>	}
334
335		/**
336		* Readlocks succeed after a writing thread unlocks
337		*/
338	<	public void testReadAfterWriteLock() {
339	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
340	<	lock.writeLock().lock();
341	<	Thread t1 = new Thread(new Runnable() {
342	<	public void run() {
343	<	lock.readLock().lock();
344	<	lock.readLock().unlock();
345	<	}
346	<	});
347	<	Thread t2 = new Thread(new Runnable() {
348	<	public void run() {
349	<	lock.readLock().lock();
350	<	lock.readLock().unlock();
376	<	}
377	<	});
338	>	public void testReadAfterWriteLock() throws InterruptedException {
339	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
340	>	lock.writeLock().lock();
341	>	Thread t1 = newStartedThread(new CheckedRunnable() {
342	>	public void realRun() {
343	>	lock.readLock().lock();
344	>	lock.readLock().unlock();
345	>	}});
346	>	Thread t2 = newStartedThread(new CheckedRunnable() {
347	>	public void realRun() {
348	>	lock.readLock().lock();
349	>	lock.readLock().unlock();
350	>	}});
351
352	<	try {
353	<	t1.start();
354	<	t2.start();
355	<	Thread.sleep(SHORT_DELAY_MS);
356	<	lock.writeLock().unlock();
384	<	t1.join(MEDIUM_DELAY_MS);
385	<	t2.join(MEDIUM_DELAY_MS);
386	<	assertTrue(!t1.isAlive());
387	<	assertTrue(!t2.isAlive());
388	<
389	<	} catch(Exception e){
390	<	unexpectedException();
391	<	}
392	<	}
352	>	Thread.sleep(SHORT_DELAY_MS);
353	>	lock.writeLock().unlock();
354	>	awaitTermination(t1, LONG_DELAY_MS);
355	>	awaitTermination(t2, LONG_DELAY_MS);
356	>	}
357
358		/**
359		* Read trylock succeeds if write locked by current thread
360		*/
361	<	public void testReadHoldingWriteLock() {
362	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
363	<	lock.writeLock().lock();
361	>	public void testReadHoldingWriteLock() {
362	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
363	>	lock.writeLock().lock();
364		assertTrue(lock.readLock().tryLock());
365		lock.readLock().unlock();
366		lock.writeLock().unlock();
367	<	}
367	>	}
368
369		/**
370		* Read lock succeeds if write locked by current thread even if
371		* other threads are waiting for readlock
372		*/
373	<	public void testReadHoldingWriteLock2() {
374	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
375	<	lock.writeLock().lock();
376	<	Thread t1 = new Thread(new Runnable() {
377	<	public void run() {
378	<	lock.readLock().lock();
379	<	lock.readLock().unlock();
380	<	}
381	<	});
382	<	Thread t2 = new Thread(new Runnable() {
383	<	public void run() {
384	<	lock.readLock().lock();
385	<	lock.readLock().unlock();
422	<	}
423	<	});
373	>	public void testReadHoldingWriteLock2() throws InterruptedException {
374	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
375	>	lock.writeLock().lock();
376	>	Thread t1 = newStartedThread(new CheckedRunnable() {
377	>	public void realRun() {
378	>	lock.readLock().lock();
379	>	lock.readLock().unlock();
380	>	}});
381	>	Thread t2 = newStartedThread(new CheckedRunnable() {
382	>	public void realRun() {
383	>	lock.readLock().lock();
384	>	lock.readLock().unlock();
385	>	}});
386
387	<	try {
388	<	t1.start();
389	<	t2.start();
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();
434	<	t1.join(MEDIUM_DELAY_MS);
435	<	t2.join(MEDIUM_DELAY_MS);
436	<	assertTrue(!t1.isAlive());
437	<	assertTrue(!t2.isAlive());
438	<
439	<	} catch(Exception e){
440	<	unexpectedException();
441	<	}
442	<	}
387	>	lock.readLock().lock();
388	>	lock.readLock().unlock();
389	>	Thread.sleep(SHORT_DELAY_MS);
390	>	lock.readLock().lock();
391	>	lock.readLock().unlock();
392	>	lock.writeLock().unlock();
393	>	awaitTermination(t1, LONG_DELAY_MS);
394	>	awaitTermination(t2, LONG_DELAY_MS);
395	>	}
396
397		/**
398	<	*  Read lock succeeds if write locked by current thread even if
398	>	* Read lock succeeds if write locked by current thread even if
399		* other threads are waiting for writelock
400		*/
401	<	public void testReadHoldingWriteLock3() {
402	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
403	<	lock.writeLock().lock();
404	<	Thread t1 = new Thread(new Runnable() {
405	<	public void run() {
406	<	lock.writeLock().lock();
407	<	lock.writeLock().unlock();
408	<	}
409	<	});
410	<	Thread t2 = new Thread(new Runnable() {
411	<	public void run() {
412	<	lock.writeLock().lock();
413	<	lock.writeLock().unlock();
461	<	}
462	<	});
401	>	public void testReadHoldingWriteLock3() throws InterruptedException {
402	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
403	>	lock.writeLock().lock();
404	>	Thread t1 = newStartedThread(new CheckedRunnable() {
405	>	public void realRun() {
406	>	lock.writeLock().lock();
407	>	lock.writeLock().unlock();
408	>	}});
409	>	Thread t2 = newStartedThread(new CheckedRunnable() {
410	>	public void realRun() {
411	>	lock.writeLock().lock();
412	>	lock.writeLock().unlock();
413	>	}});
414
415	<	try {
416	<	t1.start();
417	<	t2.start();
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();
473	<	t1.join(MEDIUM_DELAY_MS);
474	<	t2.join(MEDIUM_DELAY_MS);
475	<	assertTrue(!t1.isAlive());
476	<	assertTrue(!t2.isAlive());
477	<
478	<	} catch(Exception e){
479	<	unexpectedException();
480	<	}
481	<	}
415	>	lock.readLock().lock();
416	>	lock.readLock().unlock();
417	>	Thread.sleep(SHORT_DELAY_MS);
418	>	lock.readLock().lock();
419	>	lock.readLock().unlock();
420	>	lock.writeLock().unlock();
421	>	awaitTermination(t1, LONG_DELAY_MS);
422	>	awaitTermination(t2, LONG_DELAY_MS);
423	>	}
424
425
426		/**
427	<	*  Write lock succeeds if write locked by current thread even if
427	>	* Write lock succeeds if write locked by current thread even if
428		* other threads are waiting for writelock
429		*/
430	<	public void testWriteHoldingWriteLock4() {
431	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
432	<	lock.writeLock().lock();
433	<	Thread t1 = new Thread(new Runnable() {
434	<	public void run() {
435	<	lock.writeLock().lock();
436	<	lock.writeLock().unlock();
437	<	}
438	<	});
439	<	Thread t2 = new Thread(new Runnable() {
440	<	public void run() {
441	<	lock.writeLock().lock();
442	<	lock.writeLock().unlock();
501	<	}
502	<	});
430	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
431	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
432	>	lock.writeLock().lock();
433	>	Thread t1 = newStartedThread(new CheckedRunnable() {
434	>	public void realRun() {
435	>	lock.writeLock().lock();
436	>	lock.writeLock().unlock();
437	>	}});
438	>	Thread t2 = newStartedThread(new CheckedRunnable() {
439	>	public void realRun() {
440	>	lock.writeLock().lock();
441	>	lock.writeLock().unlock();
442	>	}});
443
444	<	try {
445	<	t1.start();
446	<	t2.start();
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();
513	<	t1.join(MEDIUM_DELAY_MS);
514	<	t2.join(MEDIUM_DELAY_MS);
515	<	assertTrue(!t1.isAlive());
516	<	assertTrue(!t2.isAlive());
517	<
518	<	} catch(Exception e){
519	<	unexpectedException();
520	<	}
521	<	}
444	>	lock.writeLock().lock();
445	>	lock.writeLock().unlock();
446	>	Thread.sleep(SHORT_DELAY_MS);
447	>	lock.writeLock().lock();
448	>	lock.writeLock().unlock();
449	>	lock.writeLock().unlock();
450	>	awaitTermination(t1, LONG_DELAY_MS);
451	>	awaitTermination(t2, LONG_DELAY_MS);
452	>	}
453
454
455		/**
456		* Fair Read trylock succeeds if write locked by current thread
457		*/
458	<	public void testReadHoldingWriteLockFair() {
459	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
460	<	lock.writeLock().lock();
458	>	public void testReadHoldingWriteLockFair() {
459	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
460	>	lock.writeLock().lock();
461		assertTrue(lock.readLock().tryLock());
462		lock.readLock().unlock();
463		lock.writeLock().unlock();
464	<	}
464	>	}
465
466		/**
467		* Fair Read lock succeeds if write locked by current thread even if
468		* other threads are waiting for readlock
469		*/
470	<	public void testReadHoldingWriteLockFair2() {
471	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
472	<	lock.writeLock().lock();
473	<	Thread t1 = new Thread(new Runnable() {
474	<	public void run() {
475	<	lock.readLock().lock();
476	<	lock.readLock().unlock();
477	<	}
478	<	});
479	<	Thread t2 = new Thread(new Runnable() {
480	<	public void run() {
481	<	lock.readLock().lock();
482	<	lock.readLock().unlock();
552	<	}
553	<	});
470	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
471	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
472	>	lock.writeLock().lock();
473	>	Thread t1 = newStartedThread(new CheckedRunnable() {
474	>	public void realRun() {
475	>	lock.readLock().lock();
476	>	lock.readLock().unlock();
477	>	}});
478	>	Thread t2 = newStartedThread(new CheckedRunnable() {
479	>	public void realRun() {
480	>	lock.readLock().lock();
481	>	lock.readLock().unlock();
482	>	}});
483
484	<	try {
485	<	t1.start();
486	<	t2.start();
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();
564	<	t1.join(MEDIUM_DELAY_MS);
565	<	t2.join(MEDIUM_DELAY_MS);
566	<	assertTrue(!t1.isAlive());
567	<	assertTrue(!t2.isAlive());
568	<
569	<	} catch(Exception e){
570	<	unexpectedException();
571	<	}
572	<	}
484	>	lock.readLock().lock();
485	>	lock.readLock().unlock();
486	>	Thread.sleep(SHORT_DELAY_MS);
487	>	lock.readLock().lock();
488	>	lock.readLock().unlock();
489	>	lock.writeLock().unlock();
490	>	awaitTermination(t1, LONG_DELAY_MS);
491	>	awaitTermination(t2, LONG_DELAY_MS);
492	>	}
493
494
495		/**
496		* Fair Read lock succeeds if write locked by current thread even if
497		* other threads are waiting for writelock
498		*/
499	<	public void testReadHoldingWriteLockFair3() {
500	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
501	<	lock.writeLock().lock();
502	<	Thread t1 = new Thread(new Runnable() {
503	<	public void run() {
504	<	lock.writeLock().lock();
505	<	lock.writeLock().unlock();
506	<	}
507	<	});
508	<	Thread t2 = new Thread(new Runnable() {
509	<	public void run() {
510	<	lock.writeLock().lock();
511	<	lock.writeLock().unlock();
592	<	}
593	<	});
499	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
500	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
501	>	lock.writeLock().lock();
502	>	Thread t1 = newStartedThread(new CheckedRunnable() {
503	>	public void realRun() {
504	>	lock.writeLock().lock();
505	>	lock.writeLock().unlock();
506	>	}});
507	>	Thread t2 = newStartedThread(new CheckedRunnable() {
508	>	public void realRun() {
509	>	lock.writeLock().lock();
510	>	lock.writeLock().unlock();
511	>	}});
512
513	<	try {
514	<	t1.start();
515	<	t2.start();
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();
604	<	t1.join(MEDIUM_DELAY_MS);
605	<	t2.join(MEDIUM_DELAY_MS);
606	<	assertTrue(!t1.isAlive());
607	<	assertTrue(!t2.isAlive());
608	<
609	<	} catch(Exception e){
610	<	unexpectedException();
611	<	}
612	<	}
513	>	lock.readLock().lock();
514	>	lock.readLock().unlock();
515	>	Thread.sleep(SHORT_DELAY_MS);
516	>	lock.readLock().lock();
517	>	lock.readLock().unlock();
518	>	lock.writeLock().unlock();
519	>	awaitTermination(t1, LONG_DELAY_MS);
520	>	awaitTermination(t2, LONG_DELAY_MS);
521	>	}
522
523
524		/**
525		* Fair Write lock succeeds if write locked by current thread even if
526		* other threads are waiting for writelock
527		*/
528	<	public void testWriteHoldingWriteLockFair4() {
529	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
530	<	lock.writeLock().lock();
531	<	Thread t1 = new Thread(new Runnable() {
532	<	public void run() {
533	<	lock.writeLock().lock();
534	<	lock.writeLock().unlock();
535	<	}
536	<	});
537	<	Thread t2 = new Thread(new Runnable() {
538	<	public void run() {
539	<	lock.writeLock().lock();
540	<	lock.writeLock().unlock();
632	<	}
633	<	});
528	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
529	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
530	>	lock.writeLock().lock();
531	>	Thread t1 = newStartedThread(new CheckedRunnable() {
532	>	public void realRun() {
533	>	lock.writeLock().lock();
534	>	lock.writeLock().unlock();
535	>	}});
536	>	Thread t2 = newStartedThread(new CheckedRunnable() {
537	>	public void realRun() {
538	>	lock.writeLock().lock();
539	>	lock.writeLock().unlock();
540	>	}});
541
542	<	try {
543	<	t1.start();
544	<	t2.start();
545	<	Thread.sleep(SHORT_DELAY_MS);
546	<	assertTrue(lock.isWriteLockedByCurrentThread());
547	<	assertTrue(lock.getWriteHoldCount() == 1);
548	<	lock.writeLock().lock();
549	<	assertTrue(lock.getWriteHoldCount() == 2);
550	<	lock.writeLock().unlock();
551	<	lock.writeLock().lock();
552	<	lock.writeLock().unlock();
553	<	lock.writeLock().unlock();
647	<	t1.join(MEDIUM_DELAY_MS);
648	<	t2.join(MEDIUM_DELAY_MS);
649	<	assertTrue(!t1.isAlive());
650	<	assertTrue(!t2.isAlive());
651	<
652	<	} catch(Exception e){
653	<	unexpectedException();
654	<	}
655	<	}
542	>	Thread.sleep(SHORT_DELAY_MS);
543	>	assertTrue(lock.isWriteLockedByCurrentThread());
544	>	assertEquals(1, lock.getWriteHoldCount());
545	>	lock.writeLock().lock();
546	>	assertEquals(2, lock.getWriteHoldCount());
547	>	lock.writeLock().unlock();
548	>	lock.writeLock().lock();
549	>	lock.writeLock().unlock();
550	>	lock.writeLock().unlock();
551	>	awaitTermination(t1, LONG_DELAY_MS);
552	>	awaitTermination(t2, LONG_DELAY_MS);
553	>	}
554
555
556		/**
557		* Read tryLock succeeds if readlocked but not writelocked
558		*/
559	<	public void testTryLockWhenReadLocked() {
560	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
561	<	lock.readLock().lock();
562	<	Thread t = new Thread(new Runnable() {
563	<	public void run() {
564	<	threadAssertTrue(lock.readLock().tryLock());
565	<	lock.readLock().unlock();
566	<	}
669	<	});
670	<	try {
671	<	t.start();
672	<	t.join();
673	<	lock.readLock().unlock();
674	<	} catch(Exception e){
675	<	unexpectedException();
676	<	}
677	<	}
559	>	public void testTryLockWhenReadLocked() throws InterruptedException {
560	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
561	>	lock.readLock().lock();
562	>	Thread t = newStartedThread(new CheckedRunnable() {
563	>	public void realRun() {
564	>	assertTrue(lock.readLock().tryLock());
565	>	lock.readLock().unlock();
566	>	}});
567
568	<
568	>	awaitTermination(t, LONG_DELAY_MS);
569	>	lock.readLock().unlock();
570	>	}
571
572		/**
573		* write tryLock fails when readlocked
574		*/
575	<	public void testWriteTryLockWhenReadLocked() {
576	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	<	lock.readLock().lock();
578	<	Thread t = new Thread(new Runnable() {
579	<	public void run() {
580	<	threadAssertFalse(lock.writeLock().tryLock());
581	<	}
582	<	});
583	<	try {
584	<	t.start();
585	<	t.join();
586	<	lock.readLock().unlock();
587	<	} catch(Exception e){
588	<	unexpectedException();
589	<	}
590	<	}
575	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
576	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	>	lock.readLock().lock();
578	>	Thread t = newStartedThread(new CheckedRunnable() {
579	>	public void realRun() {
580	>	assertFalse(lock.writeLock().tryLock());
581	>	}});
582	>
583	>	awaitTermination(t, LONG_DELAY_MS);
584	>	lock.readLock().unlock();
585	>	}
586	>
587	>
588	>	/**
589	>	* Fair Read tryLock succeeds if readlocked but not writelocked
590	>	*/
591	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
592	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
593	>	lock.readLock().lock();
594	>	Thread t = newStartedThread(new CheckedRunnable() {
595	>	public void realRun() {
596	>	assertTrue(lock.readLock().tryLock());
597	>	lock.readLock().unlock();
598	>	}});
599	>
600	>	awaitTermination(t, LONG_DELAY_MS);
601	>	lock.readLock().unlock();
602	>	}
603	>
604	>
605	>
606	>	/**
607	>	* Fair write tryLock fails when readlocked
608	>	*/
609	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
610	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
611	>	lock.readLock().lock();
612	>	Thread t = newStartedThread(new CheckedRunnable() {
613	>	public void realRun() {
614	>	assertFalse(lock.writeLock().tryLock());
615	>	}});
616	>
617	>	awaitTermination(t, LONG_DELAY_MS);
618	>	lock.readLock().unlock();
619	>	}
620	>
621
701	–
622
623		/**
624		* write timed tryLock times out if locked
625		*/
626	<	public void testWriteTryLock_Timeout() {
627	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
628	<	lock.writeLock().lock();
629	<	Thread t = new Thread(new Runnable() {
630	<	public void run() {
631	<	try {
632	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
633	<	} catch (Exception ex) {
634	<	threadUnexpectedException();
635	<	}
636	<	}
637	<	});
718	<	try {
719	<	t.start();
720	<	t.join();
721	<	lock.writeLock().unlock();
722	<	} catch(Exception e){
723	<	unexpectedException();
724	<	}
725	<	}
626	>	public void testWriteTryLock_Timeout() throws InterruptedException {
627	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
628	>	lock.writeLock().lock();
629	>	Thread t = newStartedThread(new CheckedRunnable() {
630	>	public void realRun() throws InterruptedException {
631	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
632	>	}});
633	>
634	>	awaitTermination(t, LONG_DELAY_MS);
635	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
636	>	lock.writeLock().unlock();
637	>	}
638
639		/**
640		* read timed tryLock times out if write-locked
641		*/
642	<	public void testReadTryLock_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.readLock().tryLock(1, TimeUnit.MILLISECONDS));
649	<	} catch (Exception ex) {
650	<	threadUnexpectedException();
651	<	}
652	<	}
653	<	});
742	<	try {
743	<	t.start();
744	<	t.join();
745	<	lock.writeLock().unlock();
746	<	} catch(Exception e){
747	<	unexpectedException();
748	<	}
749	<	}
642	>	public void testReadTryLock_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.readLock().tryLock(1, MILLISECONDS));
648	>	}});
649	>
650	>	awaitTermination(t, LONG_DELAY_MS);
651	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
652	>	lock.writeLock().unlock();
653	>	}
654
655
656		/**
657		* write lockInterruptibly succeeds if lock free else is interruptible
658		*/
659	<	public void testWriteLockInterruptibly() {
660	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
661	<	try {
662	<	lock.writeLock().lockInterruptibly();
663	<	} catch(Exception e) {
664	<	unexpectedException();
665	<	}
666	<	Thread t = new Thread(new Runnable() {
667	<	public void run() {
668	<	try {
669	<	lock.writeLock().lockInterruptibly();
670	<	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	<	}
659	>	public void testWriteLockInterruptibly() throws InterruptedException {
660	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
661	>	lock.writeLock().lockInterruptibly();
662	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
663	>	public void realRun() throws InterruptedException {
664	>	lock.writeLock().lockInterruptibly();
665	>	}});
666	>
667	>	Thread.sleep(SHORT_DELAY_MS);
668	>	t.interrupt();
669	>	awaitTermination(t, LONG_DELAY_MS);
670	>	releaseLock(lock.writeLock());
671		}
672
673		/**
674	<	*  read lockInterruptibly succeeds if lock free else is interruptible
674	>	* read lockInterruptibly succeeds if lock free else is interruptible
675		*/
676	<	public void testReadLockInterruptibly() {
677	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
678	<	try {
679	<	lock.writeLock().lockInterruptibly();
680	<	} catch(Exception e) {
681	<	unexpectedException();
682	<	}
683	<	Thread t = new Thread(new Runnable() {
684	<	public void run() {
685	<	try {
686	<	lock.readLock().lockInterruptibly();
687	<	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	<	}
676	>	public void testReadLockInterruptibly() throws InterruptedException {
677	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
678	>	lock.writeLock().lockInterruptibly();
679	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
680	>	public void realRun() throws InterruptedException {
681	>	lock.readLock().lockInterruptibly();
682	>	}});
683	>
684	>	Thread.sleep(SHORT_DELAY_MS);
685	>	t.interrupt();
686	>	awaitTermination(t, LONG_DELAY_MS);
687	>	releaseLock(lock.writeLock());
688		}
689
690		/**
691		* Calling await without holding lock throws IllegalMonitorStateException
692		*/
693	<	public void testAwait_IllegalMonitor() {
694	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
693	>	public void testAwait_IllegalMonitor() throws InterruptedException {
694	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
695		final Condition c = lock.writeLock().newCondition();
696		try {
697		c.await();
698		shouldThrow();
699	<	}
822	<	catch (IllegalMonitorStateException success) {
823	<	}
824	<	catch (Exception ex) {
825	<	shouldThrow();
826	<	}
699	>	} catch (IllegalMonitorStateException success) {}
700		}
701
702		/**
703		* Calling signal without holding lock throws IllegalMonitorStateException
704		*/
705		public void testSignal_IllegalMonitor() {
706	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
706	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
707		final Condition c = lock.writeLock().newCondition();
708		try {
709		c.signal();
710		shouldThrow();
711	<	}
839	<	catch (IllegalMonitorStateException success) {
840	<	}
841	<	catch (Exception ex) {
842	<	unexpectedException();
843	<	}
711	>	} catch (IllegalMonitorStateException success) {}
712		}
713
714		/**
715		* awaitNanos without a signal times out
716		*/
717	<	public void testAwaitNanos_Timeout() {
718	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
717	>	public void testAwaitNanos_Timeout() throws InterruptedException {
718	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
719		final Condition c = lock.writeLock().newCondition();
720	<	try {
721	<	lock.writeLock().lock();
722	<	long t = c.awaitNanos(100);
723	<	assertTrue(t <= 0);
724	<	lock.writeLock().unlock();
857	<	}
858	<	catch (Exception ex) {
859	<	unexpectedException();
860	<	}
720	>
721	>	lock.writeLock().lock();
722	>	long t = c.awaitNanos(100);
723	>	assertTrue(t <= 0);
724	>	lock.writeLock().unlock();
725		}
726
727
728		/**
729	<	*  timed await without a signal times out
729	>	* timed await without a signal times out
730		*/
731	<	public void testAwait_Timeout() {
732	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
731	>	public void testAwait_Timeout() throws InterruptedException {
732	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
733		final Condition c = lock.writeLock().newCondition();
734	<	try {
735	<	lock.writeLock().lock();
736	<	lock.writeLock().unlock();
873	<	}
874	<	catch (Exception ex) {
875	<	unexpectedException();
876	<	}
734	>	lock.writeLock().lock();
735	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
736	>	lock.writeLock().unlock();
737		}
738
739		/**
740		* awaitUntil without a signal times out
741		*/
742	<	public void testAwaitUntil_Timeout() {
743	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
742	>	public void testAwaitUntil_Timeout() throws InterruptedException {
743	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
744		final Condition c = lock.writeLock().newCondition();
745	<	try {
746	<	lock.writeLock().lock();
747	<	java.util.Date d = new java.util.Date();
748	<	lock.writeLock().unlock();
889	<	}
890	<	catch (Exception ex) {
891	<	unexpectedException();
892	<	}
745	>	lock.writeLock().lock();
746	>	java.util.Date d = new java.util.Date();
747	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
748	>	lock.writeLock().unlock();
749		}
750
751		/**
752		* await returns when signalled
753		*/
754	<	public void testAwait() {
755	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
754	>	public void testAwait() throws InterruptedException {
755	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
756		final Condition c = lock.writeLock().newCondition();
757	<	Thread t = new Thread(new Runnable() {
758	<	public void run() {
759	<	try {
760	<	lock.writeLock().lock();
761	<	c.await();
762	<	lock.writeLock().unlock();
907	<	}
908	<	catch(InterruptedException e) {
909	<	threadUnexpectedException();
910	<	}
911	<	}
912	<	});
757	>	Thread t = newStartedThread(new CheckedRunnable() {
758	>	public void realRun() throws InterruptedException {
759	>	lock.writeLock().lock();
760	>	c.await();
761	>	lock.writeLock().unlock();
762	>	}});
763
764	<	try {
765	<	t.start();
766	<	Thread.sleep(SHORT_DELAY_MS);
767	<	lock.writeLock().lock();
768	<	c.signal();
919	<	lock.writeLock().unlock();
920	<	t.join(SHORT_DELAY_MS);
921	<	assertFalse(t.isAlive());
922	<	}
923	<	catch (Exception ex) {
924	<	unexpectedException();
925	<	}
764	>	Thread.sleep(SHORT_DELAY_MS);
765	>	lock.writeLock().lock();
766	>	c.signal();
767	>	lock.writeLock().unlock();
768	>	awaitTermination(t, LONG_DELAY_MS);
769		}
770
771		/** A helper class for uninterruptible wait tests */
772		class UninterruptableThread extends Thread {
773		private Lock lock;
774		private Condition c;
775	<
775	>
776		public volatile boolean canAwake = false;
777		public volatile boolean interrupted = false;
778		public volatile boolean lockStarted = false;
779	<
779	>
780		public UninterruptableThread(Lock lock, Condition c) {
781		this.lock = lock;
782		this.c = c;
783		}
784	<
784	>
785		public synchronized void run() {
786		lock.lock();
787		lockStarted = true;
788	<
788	>
789		while (!canAwake) {
790		c.awaitUninterruptibly();
791		}
792	<
792	>
793		interrupted = isInterrupted();
794		lock.unlock();
795		}
#	Line 955 | Line 798 | public class ReentrantReadWriteLockTest
798		/**
799		* awaitUninterruptibly doesn't abort on interrupt
800		*/
801	<	public void testAwaitUninterruptibly() {
801	>	public void testAwaitUninterruptibly() throws InterruptedException {
802		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
803		final Condition c = lock.writeLock().newCondition();
804		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
805
806	<	try {
964	<	thread.start();
965	<
966	<	while (!thread.lockStarted) {
967	<	Thread.sleep(100);
968	<	}
806	>	thread.start();
807
808	<	lock.writeLock().lock();
809	<	try {
810	<	thread.interrupt();
973	<	thread.canAwake = true;
974	<	c.signal();
975	<	} finally {
976	<	lock.writeLock().unlock();
977	<	}
808	>	while (!thread.lockStarted) {
809	>	Thread.sleep(100);
810	>	}
811
812	<	thread.join();
813	<	assertTrue(thread.interrupted);
814	<	assertFalse(thread.isAlive());
815	<	} catch (Exception ex) {
816	<	unexpectedException();
812	>	lock.writeLock().lock();
813	>	try {
814	>	thread.interrupt();
815	>	thread.canAwake = true;
816	>	c.signal();
817	>	} finally {
818	>	lock.writeLock().unlock();
819		}
820	+
821	+	awaitTermination(thread, LONG_DELAY_MS);
822	+	assertTrue(thread.interrupted);
823		}
824
825		/**
826		* await is interruptible
827		*/
828	<	public void testAwait_Interrupt() {
829	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
828	>	public void testAwait_Interrupt() throws InterruptedException {
829	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
830		final Condition c = lock.writeLock().newCondition();
831	<	Thread t = new Thread(new Runnable() {
832	<	public void run() {
833	<	try {
834	<	lock.writeLock().lock();
835	<	c.await();
836	<	lock.writeLock().unlock();
837	<	threadShouldThrow();
838	<	}
839	<	catch(InterruptedException success) {
840	<	}
841	<	}
842	<	});
843	<
844	<	try {
845	<	t.start();
846	<	Thread.sleep(SHORT_DELAY_MS);
1009	<	t.interrupt();
1010	<	t.join(SHORT_DELAY_MS);
1011	<	assertFalse(t.isAlive());
1012	<	}
1013	<	catch (Exception ex) {
1014	<	unexpectedException();
1015	<	}
831	>	final CountDownLatch locked = new CountDownLatch(1);
832	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
833	>	public void realRun() throws InterruptedException {
834	>	lock.writeLock().lock();
835	>	assertTrue(lock.isWriteLocked());
836	>	locked.countDown();
837	>	try { c.await(); }
838	>	finally { lock.writeLock().unlock(); }
839	>	}});
840	>
841	>	locked.await();
842	>	while (lock.isWriteLocked())
843	>	Thread.yield();
844	>	t.interrupt();
845	>	awaitTermination(t, LONG_DELAY_MS);
846	>	assertFalse(lock.isWriteLocked());
847		}
848
849		/**
850		* awaitNanos is interruptible
851		*/
852	<	public void testAwaitNanos_Interrupt() {
853	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
852	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
853	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
854		final Condition c = lock.writeLock().newCondition();
855	<	Thread t = new Thread(new Runnable() {
856	<	public void run() {
857	<	try {
858	<	lock.writeLock().lock();
859	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
860	<	lock.writeLock().unlock();
861	<	threadShouldThrow();
862	<	}
863	<	catch(InterruptedException success) {
864	<	}
865	<	}
866	<	});
867	<
868	<	try {
869	<	t.start();
870	<	Thread.sleep(SHORT_DELAY_MS);
1040	<	t.interrupt();
1041	<	t.join(SHORT_DELAY_MS);
1042	<	assertFalse(t.isAlive());
1043	<	}
1044	<	catch (Exception ex) {
1045	<	unexpectedException();
1046	<	}
855	>	final CountDownLatch locked = new CountDownLatch(1);
856	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
857	>	public void realRun() throws InterruptedException {
858	>	lock.writeLock().lock();
859	>	assertTrue(lock.isWriteLocked());
860	>	locked.countDown();
861	>	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
862	>	finally { lock.writeLock().unlock(); }
863	>	}});
864	>
865	>	locked.await();
866	>	while (lock.isWriteLocked())
867	>	Thread.yield();
868	>	t.interrupt();
869	>	awaitTermination(t, LONG_DELAY_MS);
870	>	assertFalse(lock.isWriteLocked());
871		}
872
873		/**
874		* awaitUntil is interruptible
875		*/
876	<	public void testAwaitUntil_Interrupt() {
877	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
876	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
877	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
878		final Condition c = lock.writeLock().newCondition();
879	<	Thread t = new Thread(new Runnable() {
880	<	public void run() {
881	<	try {
882	<	lock.writeLock().lock();
883	<	java.util.Date d = new java.util.Date();
884	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
885	<	lock.writeLock().unlock();
886	<	threadShouldThrow();
887	<	}
888	<	catch(InterruptedException success) {
889	<	}
890	<	}
891	<	});
892	<
893	<	try {
894	<	t.start();
895	<	Thread.sleep(SHORT_DELAY_MS);
1072	<	t.interrupt();
1073	<	t.join(SHORT_DELAY_MS);
1074	<	assertFalse(t.isAlive());
1075	<	}
1076	<	catch (Exception ex) {
1077	<	unexpectedException();
1078	<	}
879	>	final CountDownLatch locked = new CountDownLatch(1);
880	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
881	>	public void realRun() throws InterruptedException {
882	>	lock.writeLock().lock();
883	>	assertTrue(lock.isWriteLocked());
884	>	locked.countDown();
885	>	java.util.Date d = new java.util.Date();
886	>	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
887	>	finally { lock.writeLock().unlock(); }
888	>	}});
889	>
890	>	locked.await();
891	>	while (lock.isWriteLocked())
892	>	Thread.yield();
893	>	t.interrupt();
894	>	awaitTermination(t, LONG_DELAY_MS);
895	>	assertFalse(lock.isWriteLocked());
896		}
897
898		/**
899		* signalAll wakes up all threads
900		*/
901	<	public void testSignalAll() {
902	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
901	>	public void testSignalAll() throws InterruptedException {
902	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
903		final Condition c = lock.writeLock().newCondition();
904	<	Thread t1 = new Thread(new Runnable() {
905	<	public void run() {
906	<	try {
907	<	lock.writeLock().lock();
908	<	c.await();
909	<	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	<	});
904	>	Thread t1 = newStartedThread(new CheckedRunnable() {
905	>	public void realRun() throws InterruptedException {
906	>	lock.writeLock().lock();
907	>	c.await();
908	>	lock.writeLock().unlock();
909	>	}});
910
911	<	try {
912	<	t1.start();
913	<	t2.start();
914	<	Thread.sleep(SHORT_DELAY_MS);
915	<	lock.writeLock().lock();
916	<	c.signalAll();
917	<	lock.writeLock().unlock();
918	<	t1.join(SHORT_DELAY_MS);
919	<	t2.join(SHORT_DELAY_MS);
920	<	assertFalse(t1.isAlive());
921	<	assertFalse(t2.isAlive());
922	<	}
923	<	catch (Exception ex) {
1126	<	unexpectedException();
1127	<	}
911	>	Thread t2 = newStartedThread(new CheckedRunnable() {
912	>	public void realRun() throws InterruptedException {
913	>	lock.writeLock().lock();
914	>	c.await();
915	>	lock.writeLock().unlock();
916	>	}});
917	>
918	>	Thread.sleep(SHORT_DELAY_MS);
919	>	lock.writeLock().lock();
920	>	c.signalAll();
921	>	lock.writeLock().unlock();
922	>	awaitTermination(t1, LONG_DELAY_MS);
923	>	awaitTermination(t2, LONG_DELAY_MS);
924		}
925
926		/**
927		* A serialized lock deserializes as unlocked
928		*/
929	<	public void testSerialization() {
929	>	public void testSerialization() throws Exception {
930		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
931		l.readLock().lock();
932		l.readLock().unlock();
933
934	<	try {
935	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
936	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
937	<	out.writeObject(l);
938	<	out.close();
939	<
940	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
941	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
942	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
943	<	r.readLock().lock();
1148	<	r.readLock().unlock();
1149	<	} catch(Exception e){
1150	<	e.printStackTrace();
1151	<	unexpectedException();
1152	<	}
934	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
935	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
936	>	out.writeObject(l);
937	>	out.close();
938	>
939	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
940	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
941	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
942	>	r.readLock().lock();
943	>	r.readLock().unlock();
944		}
945
946		/**
947		* hasQueuedThreads reports whether there are waiting threads
948		*/
949	<	public void testhasQueuedThreads() {
950	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
949	>	public void testhasQueuedThreads() throws InterruptedException {
950	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
951		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
952		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
953	<	try {
954	<	assertFalse(lock.hasQueuedThreads());
955	<	lock.writeLock().lock();
956	<	t1.start();
957	<	Thread.sleep(SHORT_DELAY_MS);
958	<	assertTrue(lock.hasQueuedThreads());
959	<	t2.start();
960	<	Thread.sleep(SHORT_DELAY_MS);
961	<	assertTrue(lock.hasQueuedThreads());
962	<	t1.interrupt();
963	<	Thread.sleep(SHORT_DELAY_MS);
964	<	assertTrue(lock.hasQueuedThreads());
965	<	lock.writeLock().unlock();
966	<	Thread.sleep(SHORT_DELAY_MS);
967	<	assertFalse(lock.hasQueuedThreads());
968	<	t1.join();
969	<	t2.join();
1179	<	} catch(Exception e){
1180	<	unexpectedException();
1181	<	}
1182	<	}
953	>	assertFalse(lock.hasQueuedThreads());
954	>	lock.writeLock().lock();
955	>	t1.start();
956	>	Thread.sleep(SHORT_DELAY_MS);
957	>	assertTrue(lock.hasQueuedThreads());
958	>	t2.start();
959	>	Thread.sleep(SHORT_DELAY_MS);
960	>	assertTrue(lock.hasQueuedThreads());
961	>	t1.interrupt();
962	>	Thread.sleep(SHORT_DELAY_MS);
963	>	assertTrue(lock.hasQueuedThreads());
964	>	lock.writeLock().unlock();
965	>	Thread.sleep(SHORT_DELAY_MS);
966	>	assertFalse(lock.hasQueuedThreads());
967	>	awaitTermination(t1, LONG_DELAY_MS);
968	>	awaitTermination(t2, LONG_DELAY_MS);
969	>	}
970
971		/**
972		* hasQueuedThread(null) throws NPE
973		*/
974	<	public void testHasQueuedThreadNPE() {
975	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
974	>	public void testHasQueuedThreadNPE() {
975	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
976		try {
977		sync.hasQueuedThread(null);
978		shouldThrow();
979	<	} catch (NullPointerException success) {
1193	<	}
979	>	} catch (NullPointerException success) {}
980		}
981
982		/**
983		* hasQueuedThread reports whether a thread is queued.
984		*/
985	<	public void testHasQueuedThread() {
986	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
985	>	public void testHasQueuedThread() throws InterruptedException {
986	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
987		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
988		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
989	<	try {
990	<	assertFalse(sync.hasQueuedThread(t1));
991	<	assertFalse(sync.hasQueuedThread(t2));
992	<	sync.writeLock().lock();
993	<	t1.start();
994	<	Thread.sleep(SHORT_DELAY_MS);
995	<	assertTrue(sync.hasQueuedThread(t1));
996	<	t2.start();
997	<	Thread.sleep(SHORT_DELAY_MS);
998	<	assertTrue(sync.hasQueuedThread(t1));
999	<	assertTrue(sync.hasQueuedThread(t2));
1000	<	t1.interrupt();
1001	<	Thread.sleep(SHORT_DELAY_MS);
1002	<	assertFalse(sync.hasQueuedThread(t1));
1003	<	assertTrue(sync.hasQueuedThread(t2));
1004	<	sync.writeLock().unlock();
1005	<	Thread.sleep(SHORT_DELAY_MS);
1006	<	assertFalse(sync.hasQueuedThread(t1));
1007	<	Thread.sleep(SHORT_DELAY_MS);
1008	<	assertFalse(sync.hasQueuedThread(t2));
1009	<	t1.join();
1010	<	t2.join();
1225	<	} catch(Exception e){
1226	<	unexpectedException();
1227	<	}
1228	<	}
989	>	assertFalse(sync.hasQueuedThread(t1));
990	>	assertFalse(sync.hasQueuedThread(t2));
991	>	sync.writeLock().lock();
992	>	t1.start();
993	>	Thread.sleep(SHORT_DELAY_MS);
994	>	assertTrue(sync.hasQueuedThread(t1));
995	>	t2.start();
996	>	Thread.sleep(SHORT_DELAY_MS);
997	>	assertTrue(sync.hasQueuedThread(t1));
998	>	assertTrue(sync.hasQueuedThread(t2));
999	>	t1.interrupt();
1000	>	Thread.sleep(SHORT_DELAY_MS);
1001	>	assertFalse(sync.hasQueuedThread(t1));
1002	>	assertTrue(sync.hasQueuedThread(t2));
1003	>	sync.writeLock().unlock();
1004	>	Thread.sleep(SHORT_DELAY_MS);
1005	>	assertFalse(sync.hasQueuedThread(t1));
1006	>	Thread.sleep(SHORT_DELAY_MS);
1007	>	assertFalse(sync.hasQueuedThread(t2));
1008	>	awaitTermination(t1, LONG_DELAY_MS);
1009	>	awaitTermination(t2, LONG_DELAY_MS);
1010	>	}
1011
1012
1013		/**
1014		* getQueueLength reports number of waiting threads
1015		*/
1016	<	public void testGetQueueLength() {
1017	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1016	>	public void testGetQueueLength() throws InterruptedException {
1017	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1018		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1019		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1020	<	try {
1021	<	assertEquals(0, lock.getQueueLength());
1022	<	lock.writeLock().lock();
1023	<	t1.start();
1024	<	Thread.sleep(SHORT_DELAY_MS);
1025	<	assertEquals(1, lock.getQueueLength());
1026	<	t2.start();
1027	<	Thread.sleep(SHORT_DELAY_MS);
1028	<	assertEquals(2, lock.getQueueLength());
1029	<	t1.interrupt();
1030	<	Thread.sleep(SHORT_DELAY_MS);
1031	<	assertEquals(1, lock.getQueueLength());
1032	<	lock.writeLock().unlock();
1033	<	Thread.sleep(SHORT_DELAY_MS);
1034	<	assertEquals(0, lock.getQueueLength());
1035	<	t1.join();
1036	<	t2.join();
1255	<	} catch(Exception e){
1256	<	unexpectedException();
1257	<	}
1258	<	}
1020	>	assertEquals(0, lock.getQueueLength());
1021	>	lock.writeLock().lock();
1022	>	t1.start();
1023	>	Thread.sleep(SHORT_DELAY_MS);
1024	>	assertEquals(1, lock.getQueueLength());
1025	>	t2.start();
1026	>	Thread.sleep(SHORT_DELAY_MS);
1027	>	assertEquals(2, lock.getQueueLength());
1028	>	t1.interrupt();
1029	>	Thread.sleep(SHORT_DELAY_MS);
1030	>	assertEquals(1, lock.getQueueLength());
1031	>	lock.writeLock().unlock();
1032	>	Thread.sleep(SHORT_DELAY_MS);
1033	>	assertEquals(0, lock.getQueueLength());
1034	>	awaitTermination(t1, LONG_DELAY_MS);
1035	>	awaitTermination(t2, LONG_DELAY_MS);
1036	>	}
1037
1038		/**
1039		* getQueuedThreads includes waiting threads
1040		*/
1041	<	public void testGetQueuedThreads() {
1042	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1041	>	public void testGetQueuedThreads() throws InterruptedException {
1042	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1043		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1044		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1045	<	try {
1046	<	assertTrue(lock.getQueuedThreads().isEmpty());
1047	<	lock.writeLock().lock();
1048	<	assertTrue(lock.getQueuedThreads().isEmpty());
1049	<	t1.start();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	assertTrue(lock.getQueuedThreads().contains(t1));
1052	<	t2.start();
1053	<	Thread.sleep(SHORT_DELAY_MS);
1054	<	assertTrue(lock.getQueuedThreads().contains(t1));
1055	<	assertTrue(lock.getQueuedThreads().contains(t2));
1056	<	t1.interrupt();
1057	<	Thread.sleep(SHORT_DELAY_MS);
1058	<	assertFalse(lock.getQueuedThreads().contains(t1));
1059	<	assertTrue(lock.getQueuedThreads().contains(t2));
1060	<	lock.writeLock().unlock();
1061	<	Thread.sleep(SHORT_DELAY_MS);
1062	<	assertTrue(lock.getQueuedThreads().isEmpty());
1063	<	t1.join();
1064	<	t2.join();
1287	<	} catch(Exception e){
1288	<	unexpectedException();
1289	<	}
1290	<	}
1045	>	assertTrue(lock.getQueuedThreads().isEmpty());
1046	>	lock.writeLock().lock();
1047	>	assertTrue(lock.getQueuedThreads().isEmpty());
1048	>	t1.start();
1049	>	Thread.sleep(SHORT_DELAY_MS);
1050	>	assertTrue(lock.getQueuedThreads().contains(t1));
1051	>	t2.start();
1052	>	Thread.sleep(SHORT_DELAY_MS);
1053	>	assertTrue(lock.getQueuedThreads().contains(t1));
1054	>	assertTrue(lock.getQueuedThreads().contains(t2));
1055	>	t1.interrupt();
1056	>	Thread.sleep(SHORT_DELAY_MS);
1057	>	assertFalse(lock.getQueuedThreads().contains(t1));
1058	>	assertTrue(lock.getQueuedThreads().contains(t2));
1059	>	lock.writeLock().unlock();
1060	>	Thread.sleep(SHORT_DELAY_MS);
1061	>	assertTrue(lock.getQueuedThreads().isEmpty());
1062	>	awaitTermination(t1, LONG_DELAY_MS);
1063	>	awaitTermination(t2, LONG_DELAY_MS);
1064	>	}
1065
1066		/**
1067		* hasWaiters throws NPE if null
1068		*/
1069		public void testHasWaitersNPE() {
1070	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1070	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1071		try {
1072		lock.hasWaiters(null);
1073		shouldThrow();
1074	<	} catch (NullPointerException success) {
1301	<	} catch (Exception ex) {
1302	<	unexpectedException();
1303	<	}
1074	>	} catch (NullPointerException success) {}
1075		}
1076
1077		/**
1078		* getWaitQueueLength throws NPE if null
1079		*/
1080		public void testGetWaitQueueLengthNPE() {
1081	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1081	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1082		try {
1083		lock.getWaitQueueLength(null);
1084		shouldThrow();
1085	<	} catch (NullPointerException success) {
1315	<	} catch (Exception ex) {
1316	<	unexpectedException();
1317	<	}
1085	>	} catch (NullPointerException success) {}
1086		}
1087
1088
#	Line 1322 | Line 1090 | public class ReentrantReadWriteLockTest
1090		* getWaitingThreads throws NPE if null
1091		*/
1092		public void testGetWaitingThreadsNPE() {
1093	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1093	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1094		try {
1095		lock.getWaitingThreads(null);
1096		shouldThrow();
1097	<	} catch (NullPointerException success) {
1330	<	} catch (Exception ex) {
1331	<	unexpectedException();
1332	<	}
1097	>	} catch (NullPointerException success) {}
1098		}
1099
1100		/**
1101		* hasWaiters throws IAE if not owned
1102		*/
1103		public void testHasWaitersIAE() {
1104	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1105	<	final Condition c = (lock.writeLock().newCondition());
1106	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1104	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1105	>	final Condition c = lock.writeLock().newCondition();
1106	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1107		try {
1108		lock2.hasWaiters(c);
1109		shouldThrow();
1110	<	} catch (IllegalArgumentException success) {
1346	<	} catch (Exception ex) {
1347	<	unexpectedException();
1348	<	}
1110	>	} catch (IllegalArgumentException success) {}
1111		}
1112
1113		/**
1114		* hasWaiters throws IMSE if not locked
1115		*/
1116		public void testHasWaitersIMSE() {
1117	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1118	<	final Condition c = (lock.writeLock().newCondition());
1117	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1118	>	final Condition c = lock.writeLock().newCondition();
1119		try {
1120		lock.hasWaiters(c);
1121		shouldThrow();
1122	<	} catch (IllegalMonitorStateException success) {
1361	<	} catch (Exception ex) {
1362	<	unexpectedException();
1363	<	}
1122	>	} catch (IllegalMonitorStateException success) {}
1123		}
1124
1125
#	Line 1368 | Line 1127 | public class ReentrantReadWriteLockTest
1127		* getWaitQueueLength throws IAE if not owned
1128		*/
1129		public void testGetWaitQueueLengthIAE() {
1130	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131	<	final Condition c = (lock.writeLock().newCondition());
1132	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1130	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131	>	final Condition c = lock.writeLock().newCondition();
1132	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1133		try {
1134		lock2.getWaitQueueLength(c);
1135		shouldThrow();
1136	<	} catch (IllegalArgumentException success) {
1378	<	} catch (Exception ex) {
1379	<	unexpectedException();
1380	<	}
1136	>	} catch (IllegalArgumentException success) {}
1137		}
1138
1139		/**
1140		* getWaitQueueLength throws IMSE if not locked
1141		*/
1142		public void testGetWaitQueueLengthIMSE() {
1143	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1144	<	final Condition c = (lock.writeLock().newCondition());
1143	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1144	>	final Condition c = lock.writeLock().newCondition();
1145		try {
1146		lock.getWaitQueueLength(c);
1147		shouldThrow();
1148	<	} catch (IllegalMonitorStateException success) {
1393	<	} catch (Exception ex) {
1394	<	unexpectedException();
1395	<	}
1148	>	} catch (IllegalMonitorStateException success) {}
1149		}
1150
1151
#	Line 1400 | Line 1153 | public class ReentrantReadWriteLockTest
1153		* getWaitingThreads throws IAE if not owned
1154		*/
1155		public void testGetWaitingThreadsIAE() {
1156	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1157	<	final Condition c = (lock.writeLock().newCondition());
1158	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1156	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1157	>	final Condition c = lock.writeLock().newCondition();
1158	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1159		try {
1160		lock2.getWaitingThreads(c);
1161		shouldThrow();
1162	<	} catch (IllegalArgumentException success) {
1410	<	} catch (Exception ex) {
1411	<	unexpectedException();
1412	<	}
1162	>	} catch (IllegalArgumentException success) {}
1163		}
1164
1165		/**
1166		* getWaitingThreads throws IMSE if not locked
1167		*/
1168		public void testGetWaitingThreadsIMSE() {
1169	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1170	<	final Condition c = (lock.writeLock().newCondition());
1169	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1170	>	final Condition c = lock.writeLock().newCondition();
1171		try {
1172		lock.getWaitingThreads(c);
1173		shouldThrow();
1174	<	} catch (IllegalMonitorStateException success) {
1425	<	} catch (Exception ex) {
1426	<	unexpectedException();
1427	<	}
1174	>	} catch (IllegalMonitorStateException success) {}
1175		}
1176
1177
1178		/**
1179		* hasWaiters returns true when a thread is waiting, else false
1180		*/
1181	<	public void testHasWaiters() {
1182	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1183	<	final Condition c = (lock.writeLock().newCondition());
1184	<	Thread t = new Thread(new Runnable() {
1185	<	public void run() {
1186	<	try {
1187	<	lock.writeLock().lock();
1188	<	threadAssertFalse(lock.hasWaiters(c));
1189	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1190	<	c.await();
1191	<	lock.writeLock().unlock();
1445	<	}
1446	<	catch(InterruptedException e) {
1447	<	threadUnexpectedException();
1448	<	}
1449	<	}
1450	<	});
1181	>	public void testHasWaiters() throws InterruptedException {
1182	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1183	>	final Condition c = lock.writeLock().newCondition();
1184	>	Thread t = newStartedThread(new CheckedRunnable() {
1185	>	public void realRun() throws InterruptedException {
1186	>	lock.writeLock().lock();
1187	>	assertFalse(lock.hasWaiters(c));
1188	>	assertEquals(0, lock.getWaitQueueLength(c));
1189	>	c.await();
1190	>	lock.writeLock().unlock();
1191	>	}});
1192
1193	<	try {
1194	<	t.start();
1195	<	Thread.sleep(SHORT_DELAY_MS);
1196	<	lock.writeLock().lock();
1197	<	assertTrue(lock.hasWaiters(c));
1198	<	assertEquals(1, lock.getWaitQueueLength(c));
1199	<	c.signal();
1200	<	lock.writeLock().unlock();
1201	<	Thread.sleep(SHORT_DELAY_MS);
1202	<	lock.writeLock().lock();
1203	<	assertFalse(lock.hasWaiters(c));
1204	<	assertEquals(0, lock.getWaitQueueLength(c));
1464	<	lock.writeLock().unlock();
1465	<	t.join(SHORT_DELAY_MS);
1466	<	assertFalse(t.isAlive());
1467	<	}
1468	<	catch (Exception ex) {
1469	<	unexpectedException();
1470	<	}
1193	>	Thread.sleep(SHORT_DELAY_MS);
1194	>	lock.writeLock().lock();
1195	>	assertTrue(lock.hasWaiters(c));
1196	>	assertEquals(1, lock.getWaitQueueLength(c));
1197	>	c.signal();
1198	>	lock.writeLock().unlock();
1199	>	Thread.sleep(SHORT_DELAY_MS);
1200	>	lock.writeLock().lock();
1201	>	assertFalse(lock.hasWaiters(c));
1202	>	assertEquals(0, lock.getWaitQueueLength(c));
1203	>	lock.writeLock().unlock();
1204	>	awaitTermination(t, LONG_DELAY_MS);
1205		}
1206
1207		/**
1208		* getWaitQueueLength returns number of waiting threads
1209		*/
1210	<	public void testGetWaitQueueLength() {
1211	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1212	<	final Condition c = (lock.writeLock().newCondition());
1213	<	Thread t = new Thread(new Runnable() {
1214	<	public void run() {
1215	<	try {
1216	<	lock.writeLock().lock();
1217	<	threadAssertFalse(lock.hasWaiters(c));
1218	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1219	<	c.await();
1220	<	lock.writeLock().unlock();
1487	<	}
1488	<	catch(InterruptedException e) {
1489	<	threadUnexpectedException();
1490	<	}
1491	<	}
1492	<	});
1210	>	public void testGetWaitQueueLength() throws InterruptedException {
1211	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1212	>	final Condition c = lock.writeLock().newCondition();
1213	>	Thread t = newStartedThread(new CheckedRunnable() {
1214	>	public void realRun() throws InterruptedException {
1215	>	lock.writeLock().lock();
1216	>	assertFalse(lock.hasWaiters(c));
1217	>	assertEquals(0, lock.getWaitQueueLength(c));
1218	>	c.await();
1219	>	lock.writeLock().unlock();
1220	>	}});
1221
1222	<	try {
1223	<	t.start();
1224	<	Thread.sleep(SHORT_DELAY_MS);
1225	<	lock.writeLock().lock();
1226	<	assertTrue(lock.hasWaiters(c));
1227	<	assertEquals(1, lock.getWaitQueueLength(c));
1228	<	c.signal();
1229	<	lock.writeLock().unlock();
1230	<	Thread.sleep(SHORT_DELAY_MS);
1231	<	lock.writeLock().lock();
1232	<	assertFalse(lock.hasWaiters(c));
1233	<	assertEquals(0, lock.getWaitQueueLength(c));
1506	<	lock.writeLock().unlock();
1507	<	t.join(SHORT_DELAY_MS);
1508	<	assertFalse(t.isAlive());
1509	<	}
1510	<	catch (Exception ex) {
1511	<	unexpectedException();
1512	<	}
1222	>	Thread.sleep(SHORT_DELAY_MS);
1223	>	lock.writeLock().lock();
1224	>	assertTrue(lock.hasWaiters(c));
1225	>	assertEquals(1, lock.getWaitQueueLength(c));
1226	>	c.signal();
1227	>	lock.writeLock().unlock();
1228	>	Thread.sleep(SHORT_DELAY_MS);
1229	>	lock.writeLock().lock();
1230	>	assertFalse(lock.hasWaiters(c));
1231	>	assertEquals(0, lock.getWaitQueueLength(c));
1232	>	lock.writeLock().unlock();
1233	>	awaitTermination(t, LONG_DELAY_MS);
1234		}
1235
1236
1237		/**
1238		* getWaitingThreads returns only and all waiting threads
1239		*/
1240	<	public void testGetWaitingThreads() {
1241	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1240	>	public void testGetWaitingThreads() throws InterruptedException {
1241	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1242		final Condition c = lock.writeLock().newCondition();
1243	<	Thread t1 = new Thread(new Runnable() {
1244	<	public void run() {
1245	<	try {
1246	<	lock.writeLock().lock();
1247	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1248	<	c.await();
1249	<	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	<	});
1243	>	Thread t1 = new Thread(new CheckedRunnable() {
1244	>	public void realRun() throws InterruptedException {
1245	>	lock.writeLock().lock();
1246	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1247	>	c.await();
1248	>	lock.writeLock().unlock();
1249	>	}});
1250
1251	<	try {
1252	<	lock.writeLock().lock();
1253	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1254	<	lock.writeLock().unlock();
1255	<	t1.start();
1256	<	Thread.sleep(SHORT_DELAY_MS);
1257	<	t2.start();
1258	<	Thread.sleep(SHORT_DELAY_MS);
1259	<	lock.writeLock().lock();
1260	<	assertTrue(lock.hasWaiters(c));
1261	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1262	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1263	<	c.signalAll();
1264	<	lock.writeLock().unlock();
1265	<	Thread.sleep(SHORT_DELAY_MS);
1266	<	lock.writeLock().lock();
1267	<	assertFalse(lock.hasWaiters(c));
1268	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1269	<	lock.writeLock().unlock();
1270	<	t1.join(SHORT_DELAY_MS);
1271	<	t2.join(SHORT_DELAY_MS);
1272	<	assertFalse(t1.isAlive());
1273	<	assertFalse(t2.isAlive());
1274	<	}
1275	<	catch (Exception ex) {
1276	<	unexpectedException();
1277	<	}
1251	>	Thread t2 = new Thread(new CheckedRunnable() {
1252	>	public void realRun() throws InterruptedException {
1253	>	lock.writeLock().lock();
1254	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1255	>	c.await();
1256	>	lock.writeLock().unlock();
1257	>	}});
1258	>
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	>	awaitTermination(t1, LONG_DELAY_MS);
1278	>	awaitTermination(t2, LONG_DELAY_MS);
1279		}
1280
1281		/**

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