ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.19 by dl, Sun Jan 25 13:25:28 2004 UTC vs.
Revision 1.48 by jsr166, Mon May 2 00:06:45 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 126 | Line 139 | public class ReentrantReadWriteLockTest
139		/**
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	+	}
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.getWriteHoldCount());
162	<	}
163	<	for(int i = SIZE; i > 0; i--) {
164	<	lock.writeLock().unlock();
165	<	assertEquals(i-1,lock.getWriteHoldCount());
166	<	}
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	<
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	>	}
182	>	}
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 {
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	<	}
200	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
201	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
202	>	lock.writeLock().lock();
203	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
204	>	public void realRun() throws InterruptedException {
205	>	lock.writeLock().lockInterruptibly();
206	>	}});
207	>
208	>	Thread.sleep(SHORT_DELAY_MS);
209	>	t.interrupt();
210	>	t.join();
211	>	releaseLock(lock.writeLock());
212	>	}
213
214		/**
215		* timed write-tryLock is interruptible
216		*/
217	<	public void testWriteTryLock_Interrupted() {
218	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
219	<	lock.writeLock().lock();
220	<	Thread t = new Thread(new Runnable() {
221	<	public void run() {
222	<	try {
223	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
224	<	} catch(InterruptedException success){}
225	<	}
226	<	});
227	<	try {
228	<	t.start();
195	<	t.interrupt();
196	<	lock.writeLock().unlock();
197	<	t.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
217	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
218	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
219	>	lock.writeLock().lock();
220	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
221	>	public void realRun() throws InterruptedException {
222	>	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
223	>	}});
224	>
225	>	Thread.sleep(SHORT_DELAY_MS);
226	>	t.interrupt();
227	>	t.join();
228	>	releaseLock(lock.writeLock());
229		}
230
231		/**
232		* read-lockInterruptibly is interruptible
233		*/
234	<	public void testReadLockInterruptibly_Interrupted() {
235	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
236	<	lock.writeLock().lock();
237	<	Thread t = new Thread(new Runnable() {
238	<	public void run() {
239	<	try {
240	<	lock.readLock().lockInterruptibly();
241	<	} catch(InterruptedException success){}
242	<	}
243	<	});
244	<	try {
245	<	t.start();
246	<	t.interrupt();
219	<	lock.writeLock().unlock();
220	<	t.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
234	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
235	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
236	>	lock.writeLock().lock();
237	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
238	>	public void realRun() throws InterruptedException {
239	>	lock.readLock().lockInterruptibly();
240	>	}});
241	>
242	>	Thread.sleep(SHORT_DELAY_MS);
243	>	t.interrupt();
244	>	t.join();
245	>	releaseLock(lock.writeLock());
246	>	}
247
248		/**
249		* timed read-tryLock is interruptible
250		*/
251	<	public void testReadTryLock_Interrupted() {
252	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	<	lock.writeLock().lock();
254	<	Thread t = new Thread(new Runnable() {
255	<	public void run() {
256	<	try {
257	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
258	<	threadShouldThrow();
259	<	} catch(InterruptedException success){}
260	<	}
261	<	});
240	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	t.join();
244	<	} catch(Exception e){
245	<	unexpectedException();
246	<	}
251	>	public void testReadTryLock_Interrupted() throws InterruptedException {
252	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	>	lock.writeLock().lock();
254	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
255	>	public void realRun() throws InterruptedException {
256	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
257	>	}});
258	>
259	>	Thread.sleep(SHORT_DELAY_MS);
260	>	t.interrupt();
261	>	t.join();
262		}
263
264	<
264	>
265		/**
266		* write-tryLock fails if locked
267		*/
268	<	public void testWriteTryLockWhenLocked() {
269	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
270	<	lock.writeLock().lock();
271	<	Thread t = new Thread(new Runnable() {
272	<	public void run() {
273	<	threadAssertFalse(lock.writeLock().tryLock());
274	<	}
275	<	});
276	<	try {
277	<	t.start();
278	<	t.join();
264	<	lock.writeLock().unlock();
265	<	} catch(Exception e){
266	<	unexpectedException();
267	<	}
268	<	}
268	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
269	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
270	>	lock.writeLock().lock();
271	>	Thread t = newStartedThread(new CheckedRunnable() {
272	>	public void realRun() {
273	>	assertFalse(lock.writeLock().tryLock());
274	>	}});
275	>
276	>	t.join();
277	>	lock.writeLock().unlock();
278	>	}
279
280		/**
281		* read-tryLock fails if locked
282		*/
283	<	public void testReadTryLockWhenLocked() {
284	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
285	<	lock.writeLock().lock();
286	<	Thread t = new Thread(new Runnable() {
287	<	public void run() {
288	<	threadAssertFalse(lock.readLock().tryLock());
289	<	}
290	<	});
291	<	try {
292	<	t.start();
293	<	t.join();
284	<	lock.writeLock().unlock();
285	<	} catch(Exception e){
286	<	unexpectedException();
287	<	}
288	<	}
283	>	public void testReadTryLockWhenLocked() throws InterruptedException {
284	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
285	>	lock.writeLock().lock();
286	>	Thread t = newStartedThread(new CheckedRunnable() {
287	>	public void realRun() {
288	>	assertFalse(lock.readLock().tryLock());
289	>	}});
290	>
291	>	t.join();
292	>	lock.writeLock().unlock();
293	>	}
294
295		/**
296		* Multiple threads can hold a read lock when not write-locked
297		*/
298	<	public void testMultipleReadLocks() {
299	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
300	<	lock.readLock().lock();
301	<	Thread t = new Thread(new Runnable() {
302	<	public void run() {
303	<	threadAssertTrue(lock.readLock().tryLock());
304	<	lock.readLock().unlock();
305	<	}
306	<	});
307	<	try {
308	<	t.start();
309	<	t.join();
305	<	lock.readLock().unlock();
306	<	} catch(Exception e){
307	<	unexpectedException();
308	<	}
309	<	}
298	>	public void testMultipleReadLocks() throws InterruptedException {
299	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
300	>	lock.readLock().lock();
301	>	Thread t = newStartedThread(new CheckedRunnable() {
302	>	public void realRun() {
303	>	assertTrue(lock.readLock().tryLock());
304	>	lock.readLock().unlock();
305	>	}});
306	>
307	>	t.join();
308	>	lock.readLock().unlock();
309	>	}
310
311		/**
312		* A writelock succeeds after reading threads unlock
313		*/
314	<	public void testWriteAfterMultipleReadLocks() {
315	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
316	<	lock.readLock().lock();
317	<	Thread t1 = new Thread(new Runnable() {
318	<	public void run() {
319	<	lock.readLock().lock();
320	<	lock.readLock().unlock();
321	<	}
322	<	});
323	<	Thread t2 = new Thread(new Runnable() {
324	<	public void run() {
325	<	lock.writeLock().lock();
326	<	lock.writeLock().unlock();
327	<	}
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	<	}
314	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
315	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
316	>	lock.readLock().lock();
317	>	Thread t1 = newStartedThread(new CheckedRunnable() {
318	>	public void realRun() {
319	>	lock.readLock().lock();
320	>	lock.readLock().unlock();
321	>	}});
322	>	Thread t2 = newStartedThread(new CheckedRunnable() {
323	>	public void realRun() {
324	>	lock.writeLock().lock();
325	>	lock.writeLock().unlock();
326	>	}});
327	>
328	>	Thread.sleep(SHORT_DELAY_MS);
329	>	lock.readLock().unlock();
330	>	t1.join(MEDIUM_DELAY_MS);
331	>	t2.join(MEDIUM_DELAY_MS);
332	>	assertTrue(!t1.isAlive());
333	>	assertTrue(!t2.isAlive());
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();
360	<	t1.join(MEDIUM_DELAY_MS);
361	<	t2.join(MEDIUM_DELAY_MS);
362	<	assertTrue(!t1.isAlive());
363	<	assertTrue(!t2.isAlive());
364	<
365	<	} catch(Exception e){
366	<	unexpectedException();
367	<	}
368	<	}
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	>	lock.writeLock().unlock();
355	>	t1.join(MEDIUM_DELAY_MS);
356	>	t2.join(MEDIUM_DELAY_MS);
357	>	assertTrue(!t1.isAlive());
358	>	assertTrue(!t2.isAlive());
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();
367	>	assertTrue(lock.readLock().tryLock());
368	>	lock.readLock().unlock();
369	>	lock.writeLock().unlock();
370	>	}
371	>
372	>	/**
373	>	* Read lock succeeds if write locked by current thread even if
374	>	* other threads are waiting for readlock
375	>	*/
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	>	t1.join(MEDIUM_DELAY_MS);
397	>	t2.join(MEDIUM_DELAY_MS);
398	>	assertTrue(!t1.isAlive());
399	>	assertTrue(!t2.isAlive());
400	>	}
401	>
402	>	/**
403	>	* Read lock succeeds if write locked by current thread even if
404	>	* other threads are waiting for writelock
405	>	*/
406	>	public void testReadHoldingWriteLock3() throws InterruptedException {
407	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
408	>	lock.writeLock().lock();
409	>	Thread t1 = newStartedThread(new CheckedRunnable() {
410	>	public void realRun() {
411	>	lock.writeLock().lock();
412	>	lock.writeLock().unlock();
413	>	}});
414	>	Thread t2 = newStartedThread(new CheckedRunnable() {
415	>	public void realRun() {
416	>	lock.writeLock().lock();
417	>	lock.writeLock().unlock();
418	>	}});
419	>
420	>	lock.readLock().lock();
421	>	lock.readLock().unlock();
422	>	Thread.sleep(SHORT_DELAY_MS);
423	>	lock.readLock().lock();
424	>	lock.readLock().unlock();
425	>	lock.writeLock().unlock();
426	>	t1.join(MEDIUM_DELAY_MS);
427	>	t2.join(MEDIUM_DELAY_MS);
428	>	assertTrue(!t1.isAlive());
429	>	assertTrue(!t2.isAlive());
430	>	}
431	>
432	>
433	>	/**
434	>	* Write lock succeeds if write locked by current thread even if
435	>	* other threads are waiting for writelock
436	>	*/
437	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
438	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
439	>	lock.writeLock().lock();
440	>	Thread t1 = newStartedThread(new CheckedRunnable() {
441	>	public void realRun() {
442	>	lock.writeLock().lock();
443	>	lock.writeLock().unlock();
444	>	}});
445	>	Thread t2 = newStartedThread(new CheckedRunnable() {
446	>	public void realRun() {
447	>	lock.writeLock().lock();
448	>	lock.writeLock().unlock();
449	>	}});
450	>
451	>	lock.writeLock().lock();
452	>	lock.writeLock().unlock();
453	>	Thread.sleep(SHORT_DELAY_MS);
454	>	lock.writeLock().lock();
455	>	lock.writeLock().unlock();
456	>	lock.writeLock().unlock();
457	>	t1.join(MEDIUM_DELAY_MS);
458	>	t2.join(MEDIUM_DELAY_MS);
459	>	assertTrue(!t1.isAlive());
460	>	assertTrue(!t2.isAlive());
461	>	}
462	>
463	>
464	>	/**
465	>	* Fair Read trylock succeeds if write locked by current thread
466	>	*/
467	>	public void testReadHoldingWriteLockFair() {
468	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
469	>	lock.writeLock().lock();
470	>	assertTrue(lock.readLock().tryLock());
471	>	lock.readLock().unlock();
472	>	lock.writeLock().unlock();
473	>	}
474	>
475	>	/**
476	>	* Fair Read lock succeeds if write locked by current thread even if
477	>	* other threads are waiting for readlock
478	>	*/
479	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
480	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
481	>	lock.writeLock().lock();
482	>	Thread t1 = newStartedThread(new CheckedRunnable() {
483	>	public void realRun() {
484	>	lock.readLock().lock();
485	>	lock.readLock().unlock();
486	>	}});
487	>	Thread t2 = newStartedThread(new CheckedRunnable() {
488	>	public void realRun() {
489	>	lock.readLock().lock();
490	>	lock.readLock().unlock();
491	>	}});
492	>
493	>	lock.readLock().lock();
494	>	lock.readLock().unlock();
495	>	Thread.sleep(SHORT_DELAY_MS);
496	>	lock.readLock().lock();
497	>	lock.readLock().unlock();
498	>	lock.writeLock().unlock();
499	>	t1.join(MEDIUM_DELAY_MS);
500	>	t2.join(MEDIUM_DELAY_MS);
501	>	assertTrue(!t1.isAlive());
502	>	assertTrue(!t2.isAlive());
503	>	}
504	>
505	>
506	>	/**
507	>	* Fair Read lock succeeds if write locked by current thread even if
508	>	* other threads are waiting for writelock
509	>	*/
510	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
511	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
512	>	lock.writeLock().lock();
513	>	Thread t1 = newStartedThread(new CheckedRunnable() {
514	>	public void realRun() {
515	>	lock.writeLock().lock();
516	>	lock.writeLock().unlock();
517	>	}});
518	>	Thread t2 = newStartedThread(new CheckedRunnable() {
519	>	public void realRun() {
520	>	lock.writeLock().lock();
521	>	lock.writeLock().unlock();
522	>	}});
523	>
524	>	lock.readLock().lock();
525	>	lock.readLock().unlock();
526	>	Thread.sleep(SHORT_DELAY_MS);
527	>	lock.readLock().lock();
528	>	lock.readLock().unlock();
529	>	lock.writeLock().unlock();
530	>	t1.join(MEDIUM_DELAY_MS);
531	>	t2.join(MEDIUM_DELAY_MS);
532	>	assertTrue(!t1.isAlive());
533	>	assertTrue(!t2.isAlive());
534	>	}
535	>
536	>
537	>	/**
538	>	* Fair Write lock succeeds if write locked by current thread even if
539	>	* other threads are waiting for writelock
540	>	*/
541	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
542	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
543	>	lock.writeLock().lock();
544	>	Thread t1 = newStartedThread(new CheckedRunnable() {
545	>	public void realRun() {
546	>	lock.writeLock().lock();
547	>	lock.writeLock().unlock();
548	>	}});
549	>	Thread t2 = newStartedThread(new CheckedRunnable() {
550	>	public void realRun() {
551	>	lock.writeLock().lock();
552	>	lock.writeLock().unlock();
553	>	}});
554	>
555	>	Thread.sleep(SHORT_DELAY_MS);
556	>	assertTrue(lock.isWriteLockedByCurrentThread());
557	>	assertEquals(1, lock.getWriteHoldCount());
558	>	lock.writeLock().lock();
559	>	assertEquals(2, lock.getWriteHoldCount());
560	>	lock.writeLock().unlock();
561	>	lock.writeLock().lock();
562	>	lock.writeLock().unlock();
563	>	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
570
571		/**
572		* Read tryLock succeeds if readlocked but not writelocked
573		*/
574	<	public void testTryLockWhenReadLocked() {
575	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
576	<	lock.readLock().lock();
577	<	Thread t = new Thread(new Runnable() {
578	<	public void run() {
579	<	threadAssertTrue(lock.readLock().tryLock());
580	<	lock.readLock().unlock();
581	<	}
391	<	});
392	<	try {
393	<	t.start();
394	<	t.join();
395	<	lock.readLock().unlock();
396	<	} catch(Exception e){
397	<	unexpectedException();
398	<	}
399	<	}
574	>	public void testTryLockWhenReadLocked() throws InterruptedException {
575	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
576	>	lock.readLock().lock();
577	>	Thread t = newStartedThread(new CheckedRunnable() {
578	>	public void realRun() {
579	>	assertTrue(lock.readLock().tryLock());
580	>	lock.readLock().unlock();
581	>	}});
582
583	<
583	>	t.join();
584	>	lock.readLock().unlock();
585	>	}
586
587		/**
588		* write tryLock fails when readlocked
589		*/
590	<	public void testWriteTryLockWhenReadLocked() {
591	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
592	<	lock.readLock().lock();
593	<	Thread t = new Thread(new Runnable() {
594	<	public void run() {
595	<	threadAssertFalse(lock.writeLock().tryLock());
596	<	}
597	<	});
598	<	try {
599	<	t.start();
600	<	t.join();
601	<	lock.readLock().unlock();
602	<	} catch(Exception e){
603	<	unexpectedException();
604	<	}
605	<	}
590	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
591	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
592	>	lock.readLock().lock();
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594	>	public void realRun() {
595	>	assertFalse(lock.writeLock().tryLock());
596	>	}});
597	>
598	>	t.join();
599	>	lock.readLock().unlock();
600	>	}
601	>
602	>
603	>	/**
604	>	* Fair Read tryLock succeeds if readlocked but not writelocked
605	>	*/
606	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
607	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
608	>	lock.readLock().lock();
609	>	Thread t = newStartedThread(new CheckedRunnable() {
610	>	public void realRun() {
611	>	assertTrue(lock.readLock().tryLock());
612	>	lock.readLock().unlock();
613	>	}});
614	>
615	>	t.join();
616	>	lock.readLock().unlock();
617	>	}
618	>
619	>
620	>
621	>	/**
622	>	* Fair write tryLock fails when readlocked
623	>	*/
624	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
625	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
626	>	lock.readLock().lock();
627	>	Thread t = newStartedThread(new CheckedRunnable() {
628	>	public void realRun() {
629	>	assertFalse(lock.writeLock().tryLock());
630	>	}});
631	>
632	>	t.join();
633	>	lock.readLock().unlock();
634	>	}
635	>
636
423	–
637
638		/**
639		* write timed tryLock times out if locked
640		*/
641	<	public void testWriteTryLock_Timeout() {
642	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
643	<	lock.writeLock().lock();
644	<	Thread t = new Thread(new Runnable() {
645	<	public void run() {
646	<	try {
647	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
648	<	} catch (Exception ex) {
649	<	threadUnexpectedException();
650	<	}
651	<	}
652	<	});
440	<	try {
441	<	t.start();
442	<	t.join();
443	<	lock.writeLock().unlock();
444	<	} catch(Exception e){
445	<	unexpectedException();
446	<	}
447	<	}
641	>	public void testWriteTryLock_Timeout() throws InterruptedException {
642	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
643	>	lock.writeLock().lock();
644	>	Thread t = newStartedThread(new CheckedRunnable() {
645	>	public void realRun() throws InterruptedException {
646	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
647	>	}});
648	>
649	>	t.join();
650	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
651	>	lock.writeLock().unlock();
652	>	}
653
654		/**
655		* read timed tryLock times out if write-locked
656		*/
657	<	public void testReadTryLock_Timeout() {
658	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
659	<	lock.writeLock().lock();
660	<	Thread t = new Thread(new Runnable() {
661	<	public void run() {
662	<	try {
663	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
664	<	} catch (Exception ex) {
665	<	threadUnexpectedException();
666	<	}
667	<	}
668	<	});
464	<	try {
465	<	t.start();
466	<	t.join();
467	<	lock.writeLock().unlock();
468	<	} catch(Exception e){
469	<	unexpectedException();
470	<	}
471	<	}
657	>	public void testReadTryLock_Timeout() throws InterruptedException {
658	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
659	>	lock.writeLock().lock();
660	>	Thread t = newStartedThread(new CheckedRunnable() {
661	>	public void realRun() throws InterruptedException {
662	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
663	>	}});
664	>
665	>	t.join();
666	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
667	>	lock.writeLock().unlock();
668	>	}
669
670
671		/**
672		* write lockInterruptibly succeeds if lock free else is interruptible
673		*/
674	<	public void testWriteLockInterruptibly() {
675	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
676	<	try {
677	<	lock.writeLock().lockInterruptibly();
678	<	} catch(Exception e) {
679	<	unexpectedException();
680	<	}
681	<	Thread t = new Thread(new Runnable() {
682	<	public void run() {
683	<	try {
684	<	lock.writeLock().lockInterruptibly();
685	<	threadShouldThrow();
686	<	}
490	<	catch(InterruptedException success) {
491	<	}
492	<	}
493	<	});
494	<	try {
495	<	t.start();
496	<	t.interrupt();
497	<	t.join();
498	<	lock.writeLock().unlock();
499	<	} catch(Exception e){
500	<	unexpectedException();
501	<	}
674	>	public void testWriteLockInterruptibly() throws InterruptedException {
675	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
676	>	lock.writeLock().lockInterruptibly();
677	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
678	>	public void realRun() throws InterruptedException {
679	>	lock.writeLock().lockInterruptibly();
680	>	}});
681	>
682	>	Thread.sleep(SHORT_DELAY_MS);
683	>	t.interrupt();
684	>	Thread.sleep(SHORT_DELAY_MS);
685	>	t.join();
686	>	lock.writeLock().unlock();
687		}
688
689		/**
690	<	*  read lockInterruptibly succeeds if lock free else is interruptible
691	<	*/
692	<	public void testReadLockInterruptibly() {
693	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	<	try {
695	<	lock.writeLock().lockInterruptibly();
696	<	} catch(Exception e) {
697	<	unexpectedException();
698	<	}
699	<	Thread t = new Thread(new Runnable() {
700	<	public void run() {
701	<	try {
702	<	lock.readLock().lockInterruptibly();
703	<	threadShouldThrow();
519	<	}
520	<	catch(InterruptedException success) {
521	<	}
522	<	}
523	<	});
524	<	try {
525	<	t.start();
526	<	t.interrupt();
527	<	t.join();
528	<	lock.writeLock().unlock();
529	<	} catch(Exception e){
530	<	unexpectedException();
531	<	}
690	>	* read lockInterruptibly succeeds if lock free else is interruptible
691	>	*/
692	>	public void testReadLockInterruptibly() throws InterruptedException {
693	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	>	lock.writeLock().lockInterruptibly();
695	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
696	>	public void realRun() throws InterruptedException {
697	>	lock.readLock().lockInterruptibly();
698	>	}});
699	>
700	>	Thread.sleep(SHORT_DELAY_MS);
701	>	t.interrupt();
702	>	t.join();
703	>	lock.writeLock().unlock();
704		}
705
706		/**
707		* Calling await without holding lock throws IllegalMonitorStateException
708		*/
709	<	public void testAwait_IllegalMonitor() {
710	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
709	>	public void testAwait_IllegalMonitor() throws InterruptedException {
710	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
711		final Condition c = lock.writeLock().newCondition();
712		try {
713		c.await();
714		shouldThrow();
715	<	}
544	<	catch (IllegalMonitorStateException success) {
545	<	}
546	<	catch (Exception ex) {
547	<	shouldThrow();
548	<	}
715	>	} catch (IllegalMonitorStateException success) {}
716		}
717
718		/**
719		* Calling signal without holding lock throws IllegalMonitorStateException
720		*/
721		public void testSignal_IllegalMonitor() {
722	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
723		final Condition c = lock.writeLock().newCondition();
724		try {
725		c.signal();
726		shouldThrow();
727	<	}
561	<	catch (IllegalMonitorStateException success) {
562	<	}
563	<	catch (Exception ex) {
564	<	unexpectedException();
565	<	}
727	>	} catch (IllegalMonitorStateException success) {}
728		}
729
730		/**
731		* awaitNanos without a signal times out
732		*/
733	<	public void testAwaitNanos_Timeout() {
734	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
733	>	public void testAwaitNanos_Timeout() throws InterruptedException {
734	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
735		final Condition c = lock.writeLock().newCondition();
736	<	try {
737	<	lock.writeLock().lock();
738	<	long t = c.awaitNanos(100);
739	<	assertTrue(t <= 0);
740	<	lock.writeLock().unlock();
579	<	}
580	<	catch (Exception ex) {
581	<	unexpectedException();
582	<	}
736	>
737	>	lock.writeLock().lock();
738	>	long t = c.awaitNanos(100);
739	>	assertTrue(t <= 0);
740	>	lock.writeLock().unlock();
741		}
742
743
744		/**
745	<	*  timed await without a signal times out
745	>	* timed await without a signal times out
746		*/
747	<	public void testAwait_Timeout() {
748	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
747	>	public void testAwait_Timeout() throws InterruptedException {
748	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749		final Condition c = lock.writeLock().newCondition();
750	<	try {
751	<	lock.writeLock().lock();
752	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
595	<	lock.writeLock().unlock();
596	<	}
597	<	catch (Exception ex) {
598	<	unexpectedException();
599	<	}
750	>	lock.writeLock().lock();
751	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
752	>	lock.writeLock().unlock();
753		}
754
755		/**
756		* awaitUntil without a signal times out
757		*/
758	<	public void testAwaitUntil_Timeout() {
759	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758	>	public void testAwaitUntil_Timeout() throws InterruptedException {
759	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
760		final Condition c = lock.writeLock().newCondition();
761	<	try {
762	<	lock.writeLock().lock();
763	<	java.util.Date d = new java.util.Date();
764	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
612	<	lock.writeLock().unlock();
613	<	}
614	<	catch (Exception ex) {
615	<	unexpectedException();
616	<	}
761	>	lock.writeLock().lock();
762	>	java.util.Date d = new java.util.Date();
763	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
764	>	lock.writeLock().unlock();
765		}
766
767		/**
768		* await returns when signalled
769		*/
770	<	public void testAwait() {
771	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
770	>	public void testAwait() throws InterruptedException {
771	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
772		final Condition c = lock.writeLock().newCondition();
773	<	Thread t = new Thread(new Runnable() {
774	<	public void run() {
775	<	try {
776	<	lock.writeLock().lock();
777	<	c.await();
778	<	lock.writeLock().unlock();
779	<	}
780	<	catch(InterruptedException e) {
781	<	threadUnexpectedException();
782	<	}
783	<	}
784	<	});
773	>	Thread t = newStartedThread(new CheckedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	lock.writeLock().lock();
776	>	c.await();
777	>	lock.writeLock().unlock();
778	>	}});
779	>
780	>	Thread.sleep(SHORT_DELAY_MS);
781	>	lock.writeLock().lock();
782	>	c.signal();
783	>	lock.writeLock().unlock();
784	>	t.join(SHORT_DELAY_MS);
785	>	assertFalse(t.isAlive());
786	>	}
787	>
788	>	/** A helper class for uninterruptible wait tests */
789	>	class UninterruptableThread extends Thread {
790	>	private Lock lock;
791	>	private Condition c;
792	>
793	>	public volatile boolean canAwake = false;
794	>	public volatile boolean interrupted = false;
795	>	public volatile boolean lockStarted = false;
796	>
797	>	public UninterruptableThread(Lock lock, Condition c) {
798	>	this.lock = lock;
799	>	this.c = c;
800	>	}
801	>
802	>	public synchronized void run() {
803	>	lock.lock();
804	>	lockStarted = true;
805	>
806	>	while (!canAwake) {
807	>	c.awaitUninterruptibly();
808	>	}
809
810	<	try {
811	<	t.start();
640	<	Thread.sleep(SHORT_DELAY_MS);
641	<	lock.writeLock().lock();
642	<	c.signal();
643	<	lock.writeLock().unlock();
644	<	t.join(SHORT_DELAY_MS);
645	<	assertFalse(t.isAlive());
646	<	}
647	<	catch (Exception ex) {
648	<	unexpectedException();
810	>	interrupted = isInterrupted();
811	>	lock.unlock();
812		}
813		}
814
815		/**
816		* awaitUninterruptibly doesn't abort on interrupt
817		*/
818	<	public void testAwaitUninterruptibly() {
819	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
818	>	public void testAwaitUninterruptibly() throws InterruptedException {
819	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
820		final Condition c = lock.writeLock().newCondition();
821	<	Thread t = new Thread(new Runnable() {
822	<	public void run() {
823	<	lock.writeLock().lock();
824	<	c.awaitUninterruptibly();
825	<	lock.writeLock().unlock();
826	<	}
827	<	});
821	>	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
822	>
823	>	thread.start();
824	>
825	>	while (!thread.lockStarted) {
826	>	Thread.sleep(100);
827	>	}
828
829	+	lock.writeLock().lock();
830		try {
831	<	t.start();
832	<	Thread.sleep(SHORT_DELAY_MS);
669	<	t.interrupt();
670	<	lock.writeLock().lock();
831	>	thread.interrupt();
832	>	thread.canAwake = true;
833		c.signal();
834	+	} finally {
835		lock.writeLock().unlock();
673	–	assert(t.isInterrupted());
674	–	t.join(SHORT_DELAY_MS);
675	–	assertFalse(t.isAlive());
676	–	}
677	–	catch (Exception ex) {
678	–	unexpectedException();
836		}
837	+
838	+	thread.join();
839	+	assertTrue(thread.interrupted);
840	+	assertFalse(thread.isAlive());
841		}
842
843		/**
844		* await is interruptible
845		*/
846	<	public void testAwait_Interrupt() {
847	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
846	>	public void testAwait_Interrupt() throws InterruptedException {
847	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848		final Condition c = lock.writeLock().newCondition();
849	<	Thread t = new Thread(new Runnable() {
850	<	public void run() {
851	<	try {
852	<	lock.writeLock().lock();
853	<	c.await();
854	<	lock.writeLock().unlock();
855	<	threadShouldThrow();
856	<	}
857	<	catch(InterruptedException success) {
858	<	}
859	<	}
699	<	});
700	<
701	<	try {
702	<	t.start();
703	<	Thread.sleep(SHORT_DELAY_MS);
704	<	t.interrupt();
705	<	t.join(SHORT_DELAY_MS);
706	<	assertFalse(t.isAlive());
707	<	}
708	<	catch (Exception ex) {
709	<	unexpectedException();
710	<	}
849	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
850	>	public void realRun() throws InterruptedException {
851	>	lock.writeLock().lock();
852	>	c.await();
853	>	lock.writeLock().unlock();
854	>	}});
855	>
856	>	Thread.sleep(SHORT_DELAY_MS);
857	>	t.interrupt();
858	>	t.join(SHORT_DELAY_MS);
859	>	assertFalse(t.isAlive());
860		}
861
862		/**
863		* awaitNanos is interruptible
864		*/
865	<	public void testAwaitNanos_Interrupt() {
866	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
865	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
866	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
867		final Condition c = lock.writeLock().newCondition();
868	<	Thread t = new Thread(new Runnable() {
869	<	public void run() {
870	<	try {
871	<	lock.writeLock().lock();
872	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
873	<	lock.writeLock().unlock();
874	<	threadShouldThrow();
875	<	}
876	<	catch(InterruptedException success) {
877	<	}
878	<	}
730	<	});
731	<
732	<	try {
733	<	t.start();
734	<	Thread.sleep(SHORT_DELAY_MS);
735	<	t.interrupt();
736	<	t.join(SHORT_DELAY_MS);
737	<	assertFalse(t.isAlive());
738	<	}
739	<	catch (Exception ex) {
740	<	unexpectedException();
741	<	}
868	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
869	>	public void realRun() throws InterruptedException {
870	>	lock.writeLock().lock();
871	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
872	>	lock.writeLock().unlock();
873	>	}});
874	>
875	>	Thread.sleep(SHORT_DELAY_MS);
876	>	t.interrupt();
877	>	t.join(SHORT_DELAY_MS);
878	>	assertFalse(t.isAlive());
879		}
880
881		/**
882		* awaitUntil is interruptible
883		*/
884	<	public void testAwaitUntil_Interrupt() {
885	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
884	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
885	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
886		final Condition c = lock.writeLock().newCondition();
887	<	Thread t = new Thread(new Runnable() {
888	<	public void run() {
889	<	try {
890	<	lock.writeLock().lock();
891	<	java.util.Date d = new java.util.Date();
892	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
893	<	lock.writeLock().unlock();
894	<	threadShouldThrow();
895	<	}
896	<	catch(InterruptedException success) {
897	<	}
898	<	}
762	<	});
763	<
764	<	try {
765	<	t.start();
766	<	Thread.sleep(SHORT_DELAY_MS);
767	<	t.interrupt();
768	<	t.join(SHORT_DELAY_MS);
769	<	assertFalse(t.isAlive());
770	<	}
771	<	catch (Exception ex) {
772	<	unexpectedException();
773	<	}
887	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
888	>	public void realRun() throws InterruptedException {
889	>	lock.writeLock().lock();
890	>	java.util.Date d = new java.util.Date();
891	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
892	>	lock.writeLock().unlock();
893	>	}});
894	>
895	>	Thread.sleep(SHORT_DELAY_MS);
896	>	t.interrupt();
897	>	t.join(SHORT_DELAY_MS);
898	>	assertFalse(t.isAlive());
899		}
900
901		/**
902		* signalAll wakes up all threads
903		*/
904	<	public void testSignalAll() {
905	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
904	>	public void testSignalAll() throws InterruptedException {
905	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
906		final Condition c = lock.writeLock().newCondition();
907	<	Thread t1 = new Thread(new Runnable() {
908	<	public void run() {
909	<	try {
910	<	lock.writeLock().lock();
911	<	c.await();
912	<	lock.writeLock().unlock();
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	<	}
927	<	catch(InterruptedException e) {
928	<	threadUnexpectedException();
804	<	}
805	<	}
806	<	});
807	<
808	<	try {
809	<	t1.start();
810	<	t2.start();
811	<	Thread.sleep(SHORT_DELAY_MS);
812	<	lock.writeLock().lock();
813	<	c.signalAll();
814	<	lock.writeLock().unlock();
815	<	t1.join(SHORT_DELAY_MS);
816	<	t2.join(SHORT_DELAY_MS);
817	<	assertFalse(t1.isAlive());
818	<	assertFalse(t2.isAlive());
819	<	}
820	<	catch (Exception ex) {
821	<	unexpectedException();
822	<	}
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	>	t1.join(SHORT_DELAY_MS);
926	>	t2.join(SHORT_DELAY_MS);
927	>	assertFalse(t1.isAlive());
928	>	assertFalse(t2.isAlive());
929		}
930
931		/**
932		* A serialized lock deserializes as unlocked
933		*/
934	<	public void testSerialization() {
934	>	public void testSerialization() throws Exception {
935		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
936		l.readLock().lock();
937		l.readLock().unlock();
938
939	<	try {
940	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
941	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
942	<	out.writeObject(l);
943	<	out.close();
944	<
945	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
946	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
947	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
948	<	r.readLock().lock();
843	<	r.readLock().unlock();
844	<	} catch(Exception e){
845	<	e.printStackTrace();
846	<	unexpectedException();
847	<	}
939	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
940	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
941	>	out.writeObject(l);
942	>	out.close();
943	>
944	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
945	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
946	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
947	>	r.readLock().lock();
948	>	r.readLock().unlock();
949		}
950
951		/**
952		* hasQueuedThreads reports whether there are waiting threads
953		*/
954	<	public void testhasQueuedThreads() {
955	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
954	>	public void testhasQueuedThreads() throws InterruptedException {
955	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
956		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
957		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
958	<	try {
959	<	assertFalse(lock.hasQueuedThreads());
960	<	lock.writeLock().lock();
961	<	t1.start();
962	<	Thread.sleep(SHORT_DELAY_MS);
963	<	assertTrue(lock.hasQueuedThreads());
964	<	t2.start();
965	<	Thread.sleep(SHORT_DELAY_MS);
966	<	assertTrue(lock.hasQueuedThreads());
967	<	t1.interrupt();
968	<	Thread.sleep(SHORT_DELAY_MS);
969	<	assertTrue(lock.hasQueuedThreads());
970	<	lock.writeLock().unlock();
971	<	Thread.sleep(SHORT_DELAY_MS);
972	<	assertFalse(lock.hasQueuedThreads());
973	<	t1.join();
974	<	t2.join();
874	<	} catch(Exception e){
875	<	unexpectedException();
876	<	}
877	<	}
958	>	assertFalse(lock.hasQueuedThreads());
959	>	lock.writeLock().lock();
960	>	t1.start();
961	>	Thread.sleep(SHORT_DELAY_MS);
962	>	assertTrue(lock.hasQueuedThreads());
963	>	t2.start();
964	>	Thread.sleep(SHORT_DELAY_MS);
965	>	assertTrue(lock.hasQueuedThreads());
966	>	t1.interrupt();
967	>	Thread.sleep(SHORT_DELAY_MS);
968	>	assertTrue(lock.hasQueuedThreads());
969	>	lock.writeLock().unlock();
970	>	Thread.sleep(SHORT_DELAY_MS);
971	>	assertFalse(lock.hasQueuedThreads());
972	>	t1.join();
973	>	t2.join();
974	>	}
975
976		/**
977		* hasQueuedThread(null) throws NPE
978		*/
979	<	public void testHasQueuedThreadNPE() {
980	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
979	>	public void testHasQueuedThreadNPE() {
980	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
981		try {
982		sync.hasQueuedThread(null);
983		shouldThrow();
984	<	} catch (NullPointerException success) {
888	<	}
984	>	} catch (NullPointerException success) {}
985		}
986
987		/**
988		* hasQueuedThread reports whether a thread is queued.
989		*/
990	<	public void testHasQueuedThread() {
991	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
990	>	public void testHasQueuedThread() throws InterruptedException {
991	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
992		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
993		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
994	<	try {
995	<	assertFalse(sync.hasQueuedThread(t1));
996	<	assertFalse(sync.hasQueuedThread(t2));
997	<	sync.writeLock().lock();
998	<	t1.start();
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	assertTrue(sync.hasQueuedThread(t1));
1001	<	t2.start();
1002	<	Thread.sleep(SHORT_DELAY_MS);
1003	<	assertTrue(sync.hasQueuedThread(t1));
1004	<	assertTrue(sync.hasQueuedThread(t2));
1005	<	t1.interrupt();
1006	<	Thread.sleep(SHORT_DELAY_MS);
1007	<	assertFalse(sync.hasQueuedThread(t1));
1008	<	assertTrue(sync.hasQueuedThread(t2));
1009	<	sync.writeLock().unlock();
1010	<	Thread.sleep(SHORT_DELAY_MS);
1011	<	assertFalse(sync.hasQueuedThread(t1));
1012	<	Thread.sleep(SHORT_DELAY_MS);
1013	<	assertFalse(sync.hasQueuedThread(t2));
1014	<	t1.join();
1015	<	t2.join();
920	<	} catch(Exception e){
921	<	unexpectedException();
922	<	}
923	<	}
994	>	assertFalse(sync.hasQueuedThread(t1));
995	>	assertFalse(sync.hasQueuedThread(t2));
996	>	sync.writeLock().lock();
997	>	t1.start();
998	>	Thread.sleep(SHORT_DELAY_MS);
999	>	assertTrue(sync.hasQueuedThread(t1));
1000	>	t2.start();
1001	>	Thread.sleep(SHORT_DELAY_MS);
1002	>	assertTrue(sync.hasQueuedThread(t1));
1003	>	assertTrue(sync.hasQueuedThread(t2));
1004	>	t1.interrupt();
1005	>	Thread.sleep(SHORT_DELAY_MS);
1006	>	assertFalse(sync.hasQueuedThread(t1));
1007	>	assertTrue(sync.hasQueuedThread(t2));
1008	>	sync.writeLock().unlock();
1009	>	Thread.sleep(SHORT_DELAY_MS);
1010	>	assertFalse(sync.hasQueuedThread(t1));
1011	>	Thread.sleep(SHORT_DELAY_MS);
1012	>	assertFalse(sync.hasQueuedThread(t2));
1013	>	t1.join();
1014	>	t2.join();
1015	>	}
1016
1017
1018		/**
1019		* getQueueLength reports number of waiting threads
1020		*/
1021	<	public void testGetQueueLength() {
1022	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1021	>	public void testGetQueueLength() throws InterruptedException {
1022	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1023		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1024		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1025	<	try {
1026	<	assertEquals(0, lock.getQueueLength());
1027	<	lock.writeLock().lock();
1028	<	t1.start();
1029	<	Thread.sleep(SHORT_DELAY_MS);
1030	<	assertEquals(1, lock.getQueueLength());
1031	<	t2.start();
1032	<	Thread.sleep(SHORT_DELAY_MS);
1033	<	assertEquals(2, lock.getQueueLength());
1034	<	t1.interrupt();
1035	<	Thread.sleep(SHORT_DELAY_MS);
1036	<	assertEquals(1, lock.getQueueLength());
1037	<	lock.writeLock().unlock();
1038	<	Thread.sleep(SHORT_DELAY_MS);
1039	<	assertEquals(0, lock.getQueueLength());
1040	<	t1.join();
1041	<	t2.join();
950	<	} catch(Exception e){
951	<	unexpectedException();
952	<	}
953	<	}
1025	>	assertEquals(0, lock.getQueueLength());
1026	>	lock.writeLock().lock();
1027	>	t1.start();
1028	>	Thread.sleep(SHORT_DELAY_MS);
1029	>	assertEquals(1, lock.getQueueLength());
1030	>	t2.start();
1031	>	Thread.sleep(SHORT_DELAY_MS);
1032	>	assertEquals(2, lock.getQueueLength());
1033	>	t1.interrupt();
1034	>	Thread.sleep(SHORT_DELAY_MS);
1035	>	assertEquals(1, lock.getQueueLength());
1036	>	lock.writeLock().unlock();
1037	>	Thread.sleep(SHORT_DELAY_MS);
1038	>	assertEquals(0, lock.getQueueLength());
1039	>	t1.join();
1040	>	t2.join();
1041	>	}
1042
1043		/**
1044		* getQueuedThreads includes waiting threads
1045		*/
1046	<	public void testGetQueuedThreads() {
1047	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1046	>	public void testGetQueuedThreads() throws InterruptedException {
1047	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1048		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1049		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1050	<	try {
1051	<	assertTrue(lock.getQueuedThreads().isEmpty());
1052	<	lock.writeLock().lock();
1053	<	assertTrue(lock.getQueuedThreads().isEmpty());
1054	<	t1.start();
1055	<	Thread.sleep(SHORT_DELAY_MS);
1056	<	assertTrue(lock.getQueuedThreads().contains(t1));
1057	<	t2.start();
1058	<	Thread.sleep(SHORT_DELAY_MS);
1059	<	assertTrue(lock.getQueuedThreads().contains(t1));
1060	<	assertTrue(lock.getQueuedThreads().contains(t2));
1061	<	t1.interrupt();
1062	<	Thread.sleep(SHORT_DELAY_MS);
1063	<	assertFalse(lock.getQueuedThreads().contains(t1));
1064	<	assertTrue(lock.getQueuedThreads().contains(t2));
1065	<	lock.writeLock().unlock();
1066	<	Thread.sleep(SHORT_DELAY_MS);
1067	<	assertTrue(lock.getQueuedThreads().isEmpty());
1068	<	t1.join();
1069	<	t2.join();
982	<	} catch(Exception e){
983	<	unexpectedException();
984	<	}
985	<	}
1050	>	assertTrue(lock.getQueuedThreads().isEmpty());
1051	>	lock.writeLock().lock();
1052	>	assertTrue(lock.getQueuedThreads().isEmpty());
1053	>	t1.start();
1054	>	Thread.sleep(SHORT_DELAY_MS);
1055	>	assertTrue(lock.getQueuedThreads().contains(t1));
1056	>	t2.start();
1057	>	Thread.sleep(SHORT_DELAY_MS);
1058	>	assertTrue(lock.getQueuedThreads().contains(t1));
1059	>	assertTrue(lock.getQueuedThreads().contains(t2));
1060	>	t1.interrupt();
1061	>	Thread.sleep(SHORT_DELAY_MS);
1062	>	assertFalse(lock.getQueuedThreads().contains(t1));
1063	>	assertTrue(lock.getQueuedThreads().contains(t2));
1064	>	lock.writeLock().unlock();
1065	>	Thread.sleep(SHORT_DELAY_MS);
1066	>	assertTrue(lock.getQueuedThreads().isEmpty());
1067	>	t1.join();
1068	>	t2.join();
1069	>	}
1070
1071		/**
1072		* hasWaiters throws NPE if null
1073		*/
1074		public void testHasWaitersNPE() {
1075	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1075	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1076		try {
1077		lock.hasWaiters(null);
1078		shouldThrow();
1079	<	} catch (NullPointerException success) {
996	<	} catch (Exception ex) {
997	<	unexpectedException();
998	<	}
1079	>	} catch (NullPointerException success) {}
1080		}
1081
1082		/**
1083		* getWaitQueueLength throws NPE if null
1084		*/
1085		public void testGetWaitQueueLengthNPE() {
1086	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1086	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1087		try {
1088		lock.getWaitQueueLength(null);
1089		shouldThrow();
1090	<	} catch (NullPointerException success) {
1010	<	} catch (Exception ex) {
1011	<	unexpectedException();
1012	<	}
1090	>	} catch (NullPointerException success) {}
1091		}
1092
1093
#	Line 1017 | Line 1095 | public class ReentrantReadWriteLockTest
1095		* getWaitingThreads throws NPE if null
1096		*/
1097		public void testGetWaitingThreadsNPE() {
1098	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1098	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1099		try {
1100		lock.getWaitingThreads(null);
1101		shouldThrow();
1102	<	} catch (NullPointerException success) {
1025	<	} catch (Exception ex) {
1026	<	unexpectedException();
1027	<	}
1102	>	} catch (NullPointerException success) {}
1103		}
1104
1105		/**
1106		* hasWaiters throws IAE if not owned
1107		*/
1108		public void testHasWaitersIAE() {
1109	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1110	<	final Condition c = (lock.writeLock().newCondition());
1111	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1109	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1110	>	final Condition c = lock.writeLock().newCondition();
1111	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1112		try {
1113		lock2.hasWaiters(c);
1114		shouldThrow();
1115	<	} catch (IllegalArgumentException success) {
1041	<	} catch (Exception ex) {
1042	<	unexpectedException();
1043	<	}
1115	>	} catch (IllegalArgumentException success) {}
1116		}
1117
1118		/**
1119		* hasWaiters throws IMSE if not locked
1120		*/
1121		public void testHasWaitersIMSE() {
1122	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1123	<	final Condition c = (lock.writeLock().newCondition());
1122	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1123	>	final Condition c = lock.writeLock().newCondition();
1124		try {
1125		lock.hasWaiters(c);
1126		shouldThrow();
1127	<	} catch (IllegalMonitorStateException success) {
1056	<	} catch (Exception ex) {
1057	<	unexpectedException();
1058	<	}
1127	>	} catch (IllegalMonitorStateException success) {}
1128		}
1129
1130
#	Line 1063 | Line 1132 | public class ReentrantReadWriteLockTest
1132		* getWaitQueueLength throws IAE if not owned
1133		*/
1134		public void testGetWaitQueueLengthIAE() {
1135	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1136	<	final Condition c = (lock.writeLock().newCondition());
1137	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1135	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1136	>	final Condition c = lock.writeLock().newCondition();
1137	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1138		try {
1139		lock2.getWaitQueueLength(c);
1140		shouldThrow();
1141	<	} catch (IllegalArgumentException success) {
1073	<	} catch (Exception ex) {
1074	<	unexpectedException();
1075	<	}
1141	>	} catch (IllegalArgumentException success) {}
1142		}
1143
1144		/**
1145		* getWaitQueueLength throws IMSE if not locked
1146		*/
1147		public void testGetWaitQueueLengthIMSE() {
1148	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1149	<	final Condition c = (lock.writeLock().newCondition());
1148	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1149	>	final Condition c = lock.writeLock().newCondition();
1150		try {
1151		lock.getWaitQueueLength(c);
1152		shouldThrow();
1153	<	} catch (IllegalMonitorStateException success) {
1088	<	} catch (Exception ex) {
1089	<	unexpectedException();
1090	<	}
1153	>	} catch (IllegalMonitorStateException success) {}
1154		}
1155
1156
#	Line 1095 | Line 1158 | public class ReentrantReadWriteLockTest
1158		* getWaitingThreads throws IAE if not owned
1159		*/
1160		public void testGetWaitingThreadsIAE() {
1161	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1162	<	final Condition c = (lock.writeLock().newCondition());
1163	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1161	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1162	>	final Condition c = lock.writeLock().newCondition();
1163	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1164		try {
1165		lock2.getWaitingThreads(c);
1166		shouldThrow();
1167	<	} catch (IllegalArgumentException success) {
1105	<	} catch (Exception ex) {
1106	<	unexpectedException();
1107	<	}
1167	>	} catch (IllegalArgumentException success) {}
1168		}
1169
1170		/**
1171		* getWaitingThreads throws IMSE if not locked
1172		*/
1173		public void testGetWaitingThreadsIMSE() {
1174	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1175	<	final Condition c = (lock.writeLock().newCondition());
1174	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1175	>	final Condition c = lock.writeLock().newCondition();
1176		try {
1177		lock.getWaitingThreads(c);
1178		shouldThrow();
1179	<	} catch (IllegalMonitorStateException success) {
1120	<	} catch (Exception ex) {
1121	<	unexpectedException();
1122	<	}
1179	>	} catch (IllegalMonitorStateException success) {}
1180		}
1181
1182
1183		/**
1184		* hasWaiters returns true when a thread is waiting, else false
1185		*/
1186	<	public void testHasWaiters() {
1187	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1188	<	final Condition c = (lock.writeLock().newCondition());
1189	<	Thread t = new Thread(new Runnable() {
1190	<	public void run() {
1191	<	try {
1192	<	lock.writeLock().lock();
1193	<	threadAssertFalse(lock.hasWaiters(c));
1194	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1195	<	c.await();
1196	<	lock.writeLock().unlock();
1197	<	}
1198	<	catch(InterruptedException e) {
1199	<	threadUnexpectedException();
1200	<	}
1201	<	}
1202	<	});
1203	<
1204	<	try {
1205	<	t.start();
1206	<	Thread.sleep(SHORT_DELAY_MS);
1207	<	lock.writeLock().lock();
1208	<	assertTrue(lock.hasWaiters(c));
1209	<	assertEquals(1, lock.getWaitQueueLength(c));
1210	<	c.signal();
1154	<	lock.writeLock().unlock();
1155	<	Thread.sleep(SHORT_DELAY_MS);
1156	<	lock.writeLock().lock();
1157	<	assertFalse(lock.hasWaiters(c));
1158	<	assertEquals(0, lock.getWaitQueueLength(c));
1159	<	lock.writeLock().unlock();
1160	<	t.join(SHORT_DELAY_MS);
1161	<	assertFalse(t.isAlive());
1162	<	}
1163	<	catch (Exception ex) {
1164	<	unexpectedException();
1165	<	}
1186	>	public void testHasWaiters() throws InterruptedException {
1187	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1188	>	final Condition c = lock.writeLock().newCondition();
1189	>	Thread t = newStartedThread(new CheckedRunnable() {
1190	>	public void realRun() throws InterruptedException {
1191	>	lock.writeLock().lock();
1192	>	assertFalse(lock.hasWaiters(c));
1193	>	assertEquals(0, lock.getWaitQueueLength(c));
1194	>	c.await();
1195	>	lock.writeLock().unlock();
1196	>	}});
1197	>
1198	>	Thread.sleep(SHORT_DELAY_MS);
1199	>	lock.writeLock().lock();
1200	>	assertTrue(lock.hasWaiters(c));
1201	>	assertEquals(1, lock.getWaitQueueLength(c));
1202	>	c.signal();
1203	>	lock.writeLock().unlock();
1204	>	Thread.sleep(SHORT_DELAY_MS);
1205	>	lock.writeLock().lock();
1206	>	assertFalse(lock.hasWaiters(c));
1207	>	assertEquals(0, lock.getWaitQueueLength(c));
1208	>	lock.writeLock().unlock();
1209	>	t.join(SHORT_DELAY_MS);
1210	>	assertFalse(t.isAlive());
1211		}
1212
1213		/**
1214		* getWaitQueueLength returns number of waiting threads
1215		*/
1216	<	public void testGetWaitQueueLength() {
1217	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1218	<	final Condition c = (lock.writeLock().newCondition());
1219	<	Thread t = new Thread(new Runnable() {
1220	<	public void run() {
1221	<	try {
1222	<	lock.writeLock().lock();
1223	<	threadAssertFalse(lock.hasWaiters(c));
1224	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1225	<	c.await();
1226	<	lock.writeLock().unlock();
1227	<	}
1228	<	catch(InterruptedException e) {
1229	<	threadUnexpectedException();
1230	<	}
1231	<	}
1232	<	});
1233	<
1234	<	try {
1235	<	t.start();
1236	<	Thread.sleep(SHORT_DELAY_MS);
1237	<	lock.writeLock().lock();
1238	<	assertTrue(lock.hasWaiters(c));
1239	<	assertEquals(1, lock.getWaitQueueLength(c));
1240	<	c.signal();
1196	<	lock.writeLock().unlock();
1197	<	Thread.sleep(SHORT_DELAY_MS);
1198	<	lock.writeLock().lock();
1199	<	assertFalse(lock.hasWaiters(c));
1200	<	assertEquals(0, lock.getWaitQueueLength(c));
1201	<	lock.writeLock().unlock();
1202	<	t.join(SHORT_DELAY_MS);
1203	<	assertFalse(t.isAlive());
1204	<	}
1205	<	catch (Exception ex) {
1206	<	unexpectedException();
1207	<	}
1216	>	public void testGetWaitQueueLength() throws InterruptedException {
1217	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1218	>	final Condition c = lock.writeLock().newCondition();
1219	>	Thread t = newStartedThread(new CheckedRunnable() {
1220	>	public void realRun() throws InterruptedException {
1221	>	lock.writeLock().lock();
1222	>	assertFalse(lock.hasWaiters(c));
1223	>	assertEquals(0, lock.getWaitQueueLength(c));
1224	>	c.await();
1225	>	lock.writeLock().unlock();
1226	>	}});
1227	>
1228	>	Thread.sleep(SHORT_DELAY_MS);
1229	>	lock.writeLock().lock();
1230	>	assertTrue(lock.hasWaiters(c));
1231	>	assertEquals(1, lock.getWaitQueueLength(c));
1232	>	c.signal();
1233	>	lock.writeLock().unlock();
1234	>	Thread.sleep(SHORT_DELAY_MS);
1235	>	lock.writeLock().lock();
1236	>	assertFalse(lock.hasWaiters(c));
1237	>	assertEquals(0, lock.getWaitQueueLength(c));
1238	>	lock.writeLock().unlock();
1239	>	t.join(SHORT_DELAY_MS);
1240	>	assertFalse(t.isAlive());
1241		}
1242
1243
1244		/**
1245		* getWaitingThreads returns only and all waiting threads
1246		*/
1247	<	public void testGetWaitingThreads() {
1248	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1247	>	public void testGetWaitingThreads() throws InterruptedException {
1248	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1249		final Condition c = lock.writeLock().newCondition();
1250	<	Thread t1 = new Thread(new Runnable() {
1251	<	public void run() {
1252	<	try {
1253	<	lock.writeLock().lock();
1254	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1255	<	c.await();
1256	<	lock.writeLock().unlock();
1257	<	}
1258	<	catch(InterruptedException e) {
1259	<	threadUnexpectedException();
1260	<	}
1261	<	}
1262	<	});
1263	<
1264	<	Thread t2 = new Thread(new Runnable() {
1265	<	public void run() {
1266	<	try {
1267	<	lock.writeLock().lock();
1268	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1269	<	c.await();
1270	<	lock.writeLock().unlock();
1271	<	}
1272	<	catch(InterruptedException e) {
1273	<	threadUnexpectedException();
1274	<	}
1275	<	}
1276	<	});
1277	<
1278	<	try {
1279	<	lock.writeLock().lock();
1280	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1281	<	lock.writeLock().unlock();
1282	<	t1.start();
1283	<	Thread.sleep(SHORT_DELAY_MS);
1284	<	t2.start();
1285	<	Thread.sleep(SHORT_DELAY_MS);
1286	<	lock.writeLock().lock();
1287	<	assertTrue(lock.hasWaiters(c));
1255	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1256	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1257	<	c.signalAll();
1258	<	lock.writeLock().unlock();
1259	<	Thread.sleep(SHORT_DELAY_MS);
1260	<	lock.writeLock().lock();
1261	<	assertFalse(lock.hasWaiters(c));
1262	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1263	<	lock.writeLock().unlock();
1264	<	t1.join(SHORT_DELAY_MS);
1265	<	t2.join(SHORT_DELAY_MS);
1266	<	assertFalse(t1.isAlive());
1267	<	assertFalse(t2.isAlive());
1268	<	}
1269	<	catch (Exception ex) {
1270	<	unexpectedException();
1271	<	}
1250	>	Thread t1 = new Thread(new CheckedRunnable() {
1251	>	public void realRun() throws InterruptedException {
1252	>	lock.writeLock().lock();
1253	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1254	>	c.await();
1255	>	lock.writeLock().unlock();
1256	>	}});
1257	>
1258	>	Thread t2 = new Thread(new CheckedRunnable() {
1259	>	public void realRun() throws InterruptedException {
1260	>	lock.writeLock().lock();
1261	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1262	>	c.await();
1263	>	lock.writeLock().unlock();
1264	>	}});
1265	>
1266	>	lock.writeLock().lock();
1267	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1268	>	lock.writeLock().unlock();
1269	>	t1.start();
1270	>	Thread.sleep(SHORT_DELAY_MS);
1271	>	t2.start();
1272	>	Thread.sleep(SHORT_DELAY_MS);
1273	>	lock.writeLock().lock();
1274	>	assertTrue(lock.hasWaiters(c));
1275	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1276	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1277	>	c.signalAll();
1278	>	lock.writeLock().unlock();
1279	>	Thread.sleep(SHORT_DELAY_MS);
1280	>	lock.writeLock().lock();
1281	>	assertFalse(lock.hasWaiters(c));
1282	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1283	>	lock.writeLock().unlock();
1284	>	t1.join(SHORT_DELAY_MS);
1285	>	t2.join(SHORT_DELAY_MS);
1286	>	assertFalse(t1.isAlive());
1287	>	assertFalse(t2.isAlive());
1288		}
1289
1290		/**

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines