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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.27 by dl, Thu May 18 10:29:23 2006 UTC vs.
Revision 1.47 by jsr166, Mon May 2 00:04:49 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());
#	Line 105 | 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());
#	Line 131 | 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	<	}
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 {
204	<	lock.writeLock().lock();
205	<	t.start();
206	<	Thread.sleep(SHORT_DELAY_MS);
207	<	t.interrupt();
208	<	Thread.sleep(SHORT_DELAY_MS);
209	<	lock.writeLock().unlock();
210	<	t.join();
211	<	} catch(Exception e){
212	<	unexpectedException();
213	<	}
214	<	}
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();
231	<	t.interrupt();
232	<	lock.writeLock().unlock();
233	<	t.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
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	<	Thread.sleep(SHORT_DELAY_MS);
247	<	t.interrupt();
256	<	Thread.sleep(SHORT_DELAY_MS);
257	<	lock.writeLock().unlock();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
262	<	}
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	>	Thread.sleep(SHORT_DELAY_MS);
245	>	lock.writeLock().unlock();
246	>	t.join();
247	>	}
248
249		/**
250		* timed read-tryLock is interruptible
251		*/
252	<	public void testReadTryLock_Interrupted() {
253	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	<	lock.writeLock().lock();
255	<	Thread t = new Thread(new Runnable() {
256	<	public void run() {
257	<	try {
258	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
259	<	threadShouldThrow();
260	<	} catch(InterruptedException success){}
261	<	}
262	<	});
278	<	try {
279	<	t.start();
280	<	t.interrupt();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
252	>	public void testReadTryLock_Interrupted() throws InterruptedException {
253	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
254	>	lock.writeLock().lock();
255	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
256	>	public void realRun() throws InterruptedException {
257	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
258	>	}});
259	>
260	>	Thread.sleep(SHORT_DELAY_MS);
261	>	t.interrupt();
262	>	t.join();
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();
302	<	lock.writeLock().unlock();
303	<	} catch(Exception e){
304	<	unexpectedException();
305	<	}
306	<	}
269	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
270	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
271	>	lock.writeLock().lock();
272	>	Thread t = newStartedThread(new CheckedRunnable() {
273	>	public void realRun() {
274	>	assertFalse(lock.writeLock().tryLock());
275	>	}});
276	>
277	>	t.join();
278	>	lock.writeLock().unlock();
279	>	}
280
281		/**
282		* read-tryLock fails if locked
283		*/
284	<	public void testReadTryLockWhenLocked() {
285	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	<	lock.writeLock().lock();
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	threadAssertFalse(lock.readLock().tryLock());
290	<	}
291	<	});
292	<	try {
293	<	t.start();
294	<	t.join();
322	<	lock.writeLock().unlock();
323	<	} catch(Exception e){
324	<	unexpectedException();
325	<	}
326	<	}
284	>	public void testReadTryLockWhenLocked() throws InterruptedException {
285	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	>	lock.writeLock().lock();
287	>	Thread t = newStartedThread(new CheckedRunnable() {
288	>	public void realRun() {
289	>	assertFalse(lock.readLock().tryLock());
290	>	}});
291	>
292	>	t.join();
293	>	lock.writeLock().unlock();
294	>	}
295
296		/**
297		* Multiple threads can hold a read lock when not write-locked
298		*/
299	<	public void testMultipleReadLocks() {
300	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301	<	lock.readLock().lock();
302	<	Thread t = new Thread(new Runnable() {
303	<	public void run() {
304	<	threadAssertTrue(lock.readLock().tryLock());
305	<	lock.readLock().unlock();
306	<	}
307	<	});
308	<	try {
309	<	t.start();
310	<	t.join();
343	<	lock.readLock().unlock();
344	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
347	<	}
299	>	public void testMultipleReadLocks() throws InterruptedException {
300	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301	>	lock.readLock().lock();
302	>	Thread t = newStartedThread(new CheckedRunnable() {
303	>	public void realRun() {
304	>	assertTrue(lock.readLock().tryLock());
305	>	lock.readLock().unlock();
306	>	}});
307	>
308	>	t.join();
309	>	lock.readLock().unlock();
310	>	}
311
312		/**
313		* A writelock succeeds after reading threads unlock
314		*/
315	<	public void testWriteAfterMultipleReadLocks() {
316	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	<	lock.readLock().lock();
318	<	Thread t1 = new Thread(new Runnable() {
319	<	public void run() {
320	<	lock.readLock().lock();
321	<	lock.readLock().unlock();
322	<	}
323	<	});
324	<	Thread t2 = new Thread(new Runnable() {
325	<	public void run() {
326	<	lock.writeLock().lock();
327	<	lock.writeLock().unlock();
365	<	}
366	<	});
315	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
316	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	>	lock.readLock().lock();
318	>	Thread t1 = newStartedThread(new CheckedRunnable() {
319	>	public void realRun() {
320	>	lock.readLock().lock();
321	>	lock.readLock().unlock();
322	>	}});
323	>	Thread t2 = newStartedThread(new CheckedRunnable() {
324	>	public void realRun() {
325	>	lock.writeLock().lock();
326	>	lock.writeLock().unlock();
327	>	}});
328
329	<	try {
330	<	t1.start();
331	<	t2.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
333	<	lock.readLock().unlock();
334	<	t1.join(MEDIUM_DELAY_MS);
335	<	t2.join(MEDIUM_DELAY_MS);
375	<	assertTrue(!t1.isAlive());
376	<	assertTrue(!t2.isAlive());
377	<
378	<	} catch(Exception e){
379	<	unexpectedException();
380	<	}
381	<	}
329	>	Thread.sleep(SHORT_DELAY_MS);
330	>	lock.readLock().unlock();
331	>	t1.join(MEDIUM_DELAY_MS);
332	>	t2.join(MEDIUM_DELAY_MS);
333	>	assertTrue(!t1.isAlive());
334	>	assertTrue(!t2.isAlive());
335	>	}
336
337		/**
338		* Readlocks succeed after a writing thread unlocks
339		*/
340	<	public void testReadAfterWriteLock() {
341	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
342	<	lock.writeLock().lock();
343	<	Thread t1 = new Thread(new Runnable() {
344	<	public void run() {
345	<	lock.readLock().lock();
346	<	lock.readLock().unlock();
347	<	}
348	<	});
349	<	Thread t2 = new Thread(new Runnable() {
350	<	public void run() {
351	<	lock.readLock().lock();
352	<	lock.readLock().unlock();
399	<	}
400	<	});
340	>	public void testReadAfterWriteLock() throws InterruptedException {
341	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
342	>	lock.writeLock().lock();
343	>	Thread t1 = newStartedThread(new CheckedRunnable() {
344	>	public void realRun() {
345	>	lock.readLock().lock();
346	>	lock.readLock().unlock();
347	>	}});
348	>	Thread t2 = newStartedThread(new CheckedRunnable() {
349	>	public void realRun() {
350	>	lock.readLock().lock();
351	>	lock.readLock().unlock();
352	>	}});
353
354	<	try {
355	<	t1.start();
356	<	t2.start();
357	<	Thread.sleep(SHORT_DELAY_MS);
358	<	lock.writeLock().unlock();
359	<	t1.join(MEDIUM_DELAY_MS);
360	<	t2.join(MEDIUM_DELAY_MS);
409	<	assertTrue(!t1.isAlive());
410	<	assertTrue(!t2.isAlive());
411	<
412	<	} catch(Exception e){
413	<	unexpectedException();
414	<	}
415	<	}
354	>	Thread.sleep(SHORT_DELAY_MS);
355	>	lock.writeLock().unlock();
356	>	t1.join(MEDIUM_DELAY_MS);
357	>	t2.join(MEDIUM_DELAY_MS);
358	>	assertTrue(!t1.isAlive());
359	>	assertTrue(!t2.isAlive());
360	>	}
361
362		/**
363		* Read trylock succeeds if write locked by current thread
364		*/
365	<	public void testReadHoldingWriteLock() {
366	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
367	<	lock.writeLock().lock();
365	>	public void testReadHoldingWriteLock() {
366	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
367	>	lock.writeLock().lock();
368		assertTrue(lock.readLock().tryLock());
369		lock.readLock().unlock();
370		lock.writeLock().unlock();
371	<	}
371	>	}
372
373		/**
374		* Read lock succeeds if write locked by current thread even if
375		* other threads are waiting for readlock
376		*/
377	<	public void testReadHoldingWriteLock2() {
378	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
379	<	lock.writeLock().lock();
380	<	Thread t1 = new Thread(new Runnable() {
381	<	public void run() {
382	<	lock.readLock().lock();
383	<	lock.readLock().unlock();
384	<	}
385	<	});
386	<	Thread t2 = new Thread(new Runnable() {
387	<	public void run() {
388	<	lock.readLock().lock();
389	<	lock.readLock().unlock();
445	<	}
446	<	});
377	>	public void testReadHoldingWriteLock2() throws InterruptedException {
378	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
379	>	lock.writeLock().lock();
380	>	Thread t1 = newStartedThread(new CheckedRunnable() {
381	>	public void realRun() {
382	>	lock.readLock().lock();
383	>	lock.readLock().unlock();
384	>	}});
385	>	Thread t2 = newStartedThread(new CheckedRunnable() {
386	>	public void realRun() {
387	>	lock.readLock().lock();
388	>	lock.readLock().unlock();
389	>	}});
390
391	<	try {
392	<	t1.start();
393	<	t2.start();
394	<	lock.readLock().lock();
395	<	lock.readLock().unlock();
396	<	Thread.sleep(SHORT_DELAY_MS);
397	<	lock.readLock().lock();
398	<	lock.readLock().unlock();
399	<	lock.writeLock().unlock();
400	<	t1.join(MEDIUM_DELAY_MS);
401	<	t2.join(MEDIUM_DELAY_MS);
459	<	assertTrue(!t1.isAlive());
460	<	assertTrue(!t2.isAlive());
461	<
462	<	} catch(Exception e){
463	<	unexpectedException();
464	<	}
465	<	}
391	>	lock.readLock().lock();
392	>	lock.readLock().unlock();
393	>	Thread.sleep(SHORT_DELAY_MS);
394	>	lock.readLock().lock();
395	>	lock.readLock().unlock();
396	>	lock.writeLock().unlock();
397	>	t1.join(MEDIUM_DELAY_MS);
398	>	t2.join(MEDIUM_DELAY_MS);
399	>	assertTrue(!t1.isAlive());
400	>	assertTrue(!t2.isAlive());
401	>	}
402
403		/**
404	<	*  Read lock succeeds if write locked by current thread even if
404	>	* Read lock succeeds if write locked by current thread even if
405		* other threads are waiting for writelock
406		*/
407	<	public void testReadHoldingWriteLock3() {
408	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409	<	lock.writeLock().lock();
410	<	Thread t1 = new Thread(new Runnable() {
411	<	public void run() {
412	<	lock.writeLock().lock();
413	<	lock.writeLock().unlock();
414	<	}
415	<	});
416	<	Thread t2 = new Thread(new Runnable() {
417	<	public void run() {
418	<	lock.writeLock().lock();
419	<	lock.writeLock().unlock();
484	<	}
485	<	});
407	>	public void testReadHoldingWriteLock3() throws InterruptedException {
408	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409	>	lock.writeLock().lock();
410	>	Thread t1 = newStartedThread(new CheckedRunnable() {
411	>	public void realRun() {
412	>	lock.writeLock().lock();
413	>	lock.writeLock().unlock();
414	>	}});
415	>	Thread t2 = newStartedThread(new CheckedRunnable() {
416	>	public void realRun() {
417	>	lock.writeLock().lock();
418	>	lock.writeLock().unlock();
419	>	}});
420
421	<	try {
422	<	t1.start();
423	<	t2.start();
424	<	lock.readLock().lock();
425	<	lock.readLock().unlock();
426	<	Thread.sleep(SHORT_DELAY_MS);
427	<	lock.readLock().lock();
428	<	lock.readLock().unlock();
429	<	lock.writeLock().unlock();
430	<	t1.join(MEDIUM_DELAY_MS);
431	<	t2.join(MEDIUM_DELAY_MS);
498	<	assertTrue(!t1.isAlive());
499	<	assertTrue(!t2.isAlive());
500	<
501	<	} catch(Exception e){
502	<	unexpectedException();
503	<	}
504	<	}
421	>	lock.readLock().lock();
422	>	lock.readLock().unlock();
423	>	Thread.sleep(SHORT_DELAY_MS);
424	>	lock.readLock().lock();
425	>	lock.readLock().unlock();
426	>	lock.writeLock().unlock();
427	>	t1.join(MEDIUM_DELAY_MS);
428	>	t2.join(MEDIUM_DELAY_MS);
429	>	assertTrue(!t1.isAlive());
430	>	assertTrue(!t2.isAlive());
431	>	}
432
433
434		/**
435	<	*  Write lock succeeds if write locked by current thread even if
435	>	* Write lock succeeds if write locked by current thread even if
436		* other threads are waiting for writelock
437		*/
438	<	public void testWriteHoldingWriteLock4() {
439	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	<	lock.writeLock().lock();
441	<	Thread t1 = new Thread(new Runnable() {
442	<	public void run() {
443	<	lock.writeLock().lock();
444	<	lock.writeLock().unlock();
445	<	}
446	<	});
447	<	Thread t2 = new Thread(new Runnable() {
448	<	public void run() {
449	<	lock.writeLock().lock();
450	<	lock.writeLock().unlock();
524	<	}
525	<	});
438	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
439	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	>	lock.writeLock().lock();
441	>	Thread t1 = newStartedThread(new CheckedRunnable() {
442	>	public void realRun() {
443	>	lock.writeLock().lock();
444	>	lock.writeLock().unlock();
445	>	}});
446	>	Thread t2 = newStartedThread(new CheckedRunnable() {
447	>	public void realRun() {
448	>	lock.writeLock().lock();
449	>	lock.writeLock().unlock();
450	>	}});
451
452	<	try {
453	<	t1.start();
454	<	t2.start();
455	<	lock.writeLock().lock();
456	<	lock.writeLock().unlock();
457	<	Thread.sleep(SHORT_DELAY_MS);
458	<	lock.writeLock().lock();
459	<	lock.writeLock().unlock();
460	<	lock.writeLock().unlock();
461	<	t1.join(MEDIUM_DELAY_MS);
462	<	t2.join(MEDIUM_DELAY_MS);
538	<	assertTrue(!t1.isAlive());
539	<	assertTrue(!t2.isAlive());
540	<
541	<	} catch(Exception e){
542	<	unexpectedException();
543	<	}
544	<	}
452	>	lock.writeLock().lock();
453	>	lock.writeLock().unlock();
454	>	Thread.sleep(SHORT_DELAY_MS);
455	>	lock.writeLock().lock();
456	>	lock.writeLock().unlock();
457	>	lock.writeLock().unlock();
458	>	t1.join(MEDIUM_DELAY_MS);
459	>	t2.join(MEDIUM_DELAY_MS);
460	>	assertTrue(!t1.isAlive());
461	>	assertTrue(!t2.isAlive());
462	>	}
463
464
465		/**
466		* Fair Read trylock succeeds if write locked by current thread
467		*/
468	<	public void testReadHoldingWriteLockFair() {
469	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
470	<	lock.writeLock().lock();
468	>	public void testReadHoldingWriteLockFair() {
469	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
470	>	lock.writeLock().lock();
471		assertTrue(lock.readLock().tryLock());
472		lock.readLock().unlock();
473		lock.writeLock().unlock();
474	<	}
474	>	}
475
476		/**
477		* Fair Read lock succeeds if write locked by current thread even if
478		* other threads are waiting for readlock
479		*/
480	<	public void testReadHoldingWriteLockFair2() {
481	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	<	lock.writeLock().lock();
483	<	Thread t1 = new Thread(new Runnable() {
484	<	public void run() {
485	<	lock.readLock().lock();
486	<	lock.readLock().unlock();
487	<	}
488	<	});
489	<	Thread t2 = new Thread(new Runnable() {
490	<	public void run() {
491	<	lock.readLock().lock();
492	<	lock.readLock().unlock();
575	<	}
576	<	});
480	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
481	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	>	lock.writeLock().lock();
483	>	Thread t1 = newStartedThread(new CheckedRunnable() {
484	>	public void realRun() {
485	>	lock.readLock().lock();
486	>	lock.readLock().unlock();
487	>	}});
488	>	Thread t2 = newStartedThread(new CheckedRunnable() {
489	>	public void realRun() {
490	>	lock.readLock().lock();
491	>	lock.readLock().unlock();
492	>	}});
493
494	<	try {
495	<	t1.start();
496	<	t2.start();
497	<	lock.readLock().lock();
498	<	lock.readLock().unlock();
499	<	Thread.sleep(SHORT_DELAY_MS);
500	<	lock.readLock().lock();
501	<	lock.readLock().unlock();
502	<	lock.writeLock().unlock();
503	<	t1.join(MEDIUM_DELAY_MS);
504	<	t2.join(MEDIUM_DELAY_MS);
589	<	assertTrue(!t1.isAlive());
590	<	assertTrue(!t2.isAlive());
591	<
592	<	} catch(Exception e){
593	<	unexpectedException();
594	<	}
595	<	}
494	>	lock.readLock().lock();
495	>	lock.readLock().unlock();
496	>	Thread.sleep(SHORT_DELAY_MS);
497	>	lock.readLock().lock();
498	>	lock.readLock().unlock();
499	>	lock.writeLock().unlock();
500	>	t1.join(MEDIUM_DELAY_MS);
501	>	t2.join(MEDIUM_DELAY_MS);
502	>	assertTrue(!t1.isAlive());
503	>	assertTrue(!t2.isAlive());
504	>	}
505
506
507		/**
508		* Fair Read lock succeeds if write locked by current thread even if
509		* other threads are waiting for writelock
510		*/
511	<	public void testReadHoldingWriteLockFair3() {
512	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
513	<	lock.writeLock().lock();
514	<	Thread t1 = new Thread(new Runnable() {
515	<	public void run() {
516	<	lock.writeLock().lock();
517	<	lock.writeLock().unlock();
518	<	}
519	<	});
520	<	Thread t2 = new Thread(new Runnable() {
521	<	public void run() {
522	<	lock.writeLock().lock();
523	<	lock.writeLock().unlock();
615	<	}
616	<	});
511	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
512	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
513	>	lock.writeLock().lock();
514	>	Thread t1 = newStartedThread(new CheckedRunnable() {
515	>	public void realRun() {
516	>	lock.writeLock().lock();
517	>	lock.writeLock().unlock();
518	>	}});
519	>	Thread t2 = newStartedThread(new CheckedRunnable() {
520	>	public void realRun() {
521	>	lock.writeLock().lock();
522	>	lock.writeLock().unlock();
523	>	}});
524
525	<	try {
526	<	t1.start();
527	<	t2.start();
528	<	lock.readLock().lock();
529	<	lock.readLock().unlock();
530	<	Thread.sleep(SHORT_DELAY_MS);
531	<	lock.readLock().lock();
532	<	lock.readLock().unlock();
533	<	lock.writeLock().unlock();
534	<	t1.join(MEDIUM_DELAY_MS);
535	<	t2.join(MEDIUM_DELAY_MS);
629	<	assertTrue(!t1.isAlive());
630	<	assertTrue(!t2.isAlive());
631	<
632	<	} catch(Exception e){
633	<	unexpectedException();
634	<	}
635	<	}
525	>	lock.readLock().lock();
526	>	lock.readLock().unlock();
527	>	Thread.sleep(SHORT_DELAY_MS);
528	>	lock.readLock().lock();
529	>	lock.readLock().unlock();
530	>	lock.writeLock().unlock();
531	>	t1.join(MEDIUM_DELAY_MS);
532	>	t2.join(MEDIUM_DELAY_MS);
533	>	assertTrue(!t1.isAlive());
534	>	assertTrue(!t2.isAlive());
535	>	}
536
537
538		/**
539		* Fair Write lock succeeds if write locked by current thread even if
540		* other threads are waiting for writelock
541		*/
542	<	public void testWriteHoldingWriteLockFair4() {
543	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
544	<	lock.writeLock().lock();
545	<	Thread t1 = new Thread(new Runnable() {
546	<	public void run() {
547	<	lock.writeLock().lock();
548	<	lock.writeLock().unlock();
549	<	}
550	<	});
551	<	Thread t2 = new Thread(new Runnable() {
552	<	public void run() {
553	<	lock.writeLock().lock();
554	<	lock.writeLock().unlock();
655	<	}
656	<	});
542	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
543	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
544	>	lock.writeLock().lock();
545	>	Thread t1 = newStartedThread(new CheckedRunnable() {
546	>	public void realRun() {
547	>	lock.writeLock().lock();
548	>	lock.writeLock().unlock();
549	>	}});
550	>	Thread t2 = newStartedThread(new CheckedRunnable() {
551	>	public void realRun() {
552	>	lock.writeLock().lock();
553	>	lock.writeLock().unlock();
554	>	}});
555
556	<	try {
557	<	t1.start();
558	<	t2.start();
559	<	Thread.sleep(SHORT_DELAY_MS);
560	<	assertTrue(lock.isWriteLockedByCurrentThread());
561	<	assertTrue(lock.getWriteHoldCount() == 1);
562	<	lock.writeLock().lock();
563	<	assertTrue(lock.getWriteHoldCount() == 2);
564	<	lock.writeLock().unlock();
565	<	lock.writeLock().lock();
566	<	lock.writeLock().unlock();
567	<	lock.writeLock().unlock();
568	<	t1.join(MEDIUM_DELAY_MS);
569	<	t2.join(MEDIUM_DELAY_MS);
672	<	assertTrue(!t1.isAlive());
673	<	assertTrue(!t2.isAlive());
674	<
675	<	} catch(Exception e){
676	<	unexpectedException();
677	<	}
678	<	}
556	>	Thread.sleep(SHORT_DELAY_MS);
557	>	assertTrue(lock.isWriteLockedByCurrentThread());
558	>	assertEquals(1, lock.getWriteHoldCount());
559	>	lock.writeLock().lock();
560	>	assertEquals(2, lock.getWriteHoldCount());
561	>	lock.writeLock().unlock();
562	>	lock.writeLock().lock();
563	>	lock.writeLock().unlock();
564	>	lock.writeLock().unlock();
565	>	t1.join(MEDIUM_DELAY_MS);
566	>	t2.join(MEDIUM_DELAY_MS);
567	>	assertTrue(!t1.isAlive());
568	>	assertTrue(!t2.isAlive());
569	>	}
570
571
572		/**
573		* Read tryLock succeeds if readlocked but not writelocked
574		*/
575	<	public void testTryLockWhenReadLocked() {
576	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	<	lock.readLock().lock();
578	<	Thread t = new Thread(new Runnable() {
579	<	public void run() {
580	<	threadAssertTrue(lock.readLock().tryLock());
581	<	lock.readLock().unlock();
582	<	}
692	<	});
693	<	try {
694	<	t.start();
695	<	t.join();
696	<	lock.readLock().unlock();
697	<	} catch(Exception e){
698	<	unexpectedException();
699	<	}
700	<	}
575	>	public void testTryLockWhenReadLocked() throws InterruptedException {
576	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
577	>	lock.readLock().lock();
578	>	Thread t = newStartedThread(new CheckedRunnable() {
579	>	public void realRun() {
580	>	assertTrue(lock.readLock().tryLock());
581	>	lock.readLock().unlock();
582	>	}});
583
584	<
584	>	t.join();
585	>	lock.readLock().unlock();
586	>	}
587
588		/**
589		* write tryLock fails when readlocked
590		*/
591	<	public void testWriteTryLockWhenReadLocked() {
592	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	<	lock.readLock().lock();
594	<	Thread t = new Thread(new Runnable() {
595	<	public void run() {
596	<	threadAssertFalse(lock.writeLock().tryLock());
597	<	}
598	<	});
599	<	try {
600	<	t.start();
601	<	t.join();
718	<	lock.readLock().unlock();
719	<	} catch(Exception e){
720	<	unexpectedException();
721	<	}
722	<	}
591	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
592	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	>	lock.readLock().lock();
594	>	Thread t = newStartedThread(new CheckedRunnable() {
595	>	public void realRun() {
596	>	assertFalse(lock.writeLock().tryLock());
597	>	}});
598	>
599	>	t.join();
600	>	lock.readLock().unlock();
601	>	}
602
603
604		/**
605		* Fair Read tryLock succeeds if readlocked but not writelocked
606		*/
607	<	public void testTryLockWhenReadLockedFair() {
608	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
609	<	lock.readLock().lock();
610	<	Thread t = new Thread(new Runnable() {
611	<	public void run() {
612	<	threadAssertTrue(lock.readLock().tryLock());
613	<	lock.readLock().unlock();
614	<	}
615	<	});
616	<	try {
617	<	t.start();
618	<	t.join();
619	<	lock.readLock().unlock();
741	<	} catch(Exception e){
742	<	unexpectedException();
743	<	}
744	<	}
607	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
608	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
609	>	lock.readLock().lock();
610	>	Thread t = newStartedThread(new CheckedRunnable() {
611	>	public void realRun() {
612	>	assertTrue(lock.readLock().tryLock());
613	>	lock.readLock().unlock();
614	>	}});
615	>
616	>	t.join();
617	>	lock.readLock().unlock();
618	>	}
619	>
620
746	–
621
622		/**
623		* Fair write tryLock fails when readlocked
624		*/
625	<	public void testWriteTryLockWhenReadLockedFair() {
626	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
627	<	lock.readLock().lock();
628	<	Thread t = new Thread(new Runnable() {
629	<	public void run() {
630	<	threadAssertFalse(lock.writeLock().tryLock());
631	<	}
632	<	});
633	<	try {
634	<	t.start();
635	<	t.join();
636	<	lock.readLock().unlock();
763	<	} catch(Exception e){
764	<	unexpectedException();
765	<	}
766	<	}
625	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
626	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
627	>	lock.readLock().lock();
628	>	Thread t = newStartedThread(new CheckedRunnable() {
629	>	public void realRun() {
630	>	assertFalse(lock.writeLock().tryLock());
631	>	}});
632	>
633	>	t.join();
634	>	lock.readLock().unlock();
635	>	}
636	>
637
768	–
638
639		/**
640		* write timed tryLock times out if locked
641		*/
642	<	public void testWriteTryLock_Timeout() {
643	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644	<	lock.writeLock().lock();
645	<	Thread t = new Thread(new Runnable() {
646	<	public void run() {
647	<	try {
648	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
649	<	} catch (Exception ex) {
650	<	threadUnexpectedException();
651	<	}
652	<	}
653	<	});
785	<	try {
786	<	t.start();
787	<	t.join();
788	<	lock.writeLock().unlock();
789	<	} catch(Exception e){
790	<	unexpectedException();
791	<	}
792	<	}
642	>	public void testWriteTryLock_Timeout() throws InterruptedException {
643	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644	>	lock.writeLock().lock();
645	>	Thread t = newStartedThread(new CheckedRunnable() {
646	>	public void realRun() throws InterruptedException {
647	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
648	>	}});
649	>
650	>	t.join();
651	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
652	>	lock.writeLock().unlock();
653	>	}
654
655		/**
656		* read timed tryLock times out if write-locked
657		*/
658	<	public void testReadTryLock_Timeout() {
659	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
660	<	lock.writeLock().lock();
661	<	Thread t = new Thread(new Runnable() {
662	<	public void run() {
663	<	try {
664	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
665	<	} catch (Exception ex) {
666	<	threadUnexpectedException();
667	<	}
668	<	}
669	<	});
809	<	try {
810	<	t.start();
811	<	t.join();
812	<	lock.writeLock().unlock();
813	<	} catch(Exception e){
814	<	unexpectedException();
815	<	}
816	<	}
658	>	public void testReadTryLock_Timeout() throws InterruptedException {
659	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
660	>	lock.writeLock().lock();
661	>	Thread t = newStartedThread(new CheckedRunnable() {
662	>	public void realRun() throws InterruptedException {
663	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
664	>	}});
665	>
666	>	t.join();
667	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
668	>	lock.writeLock().unlock();
669	>	}
670
671
672		/**
673		* write lockInterruptibly succeeds if lock free else is interruptible
674		*/
675	<	public void testWriteLockInterruptibly() {
676	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
677	<	try {
678	<	lock.writeLock().lockInterruptibly();
679	<	} catch(Exception e) {
680	<	unexpectedException();
681	<	}
682	<	Thread t = new Thread(new Runnable() {
683	<	public void run() {
684	<	try {
685	<	lock.writeLock().lockInterruptibly();
686	<	threadShouldThrow();
687	<	}
835	<	catch(InterruptedException success) {
836	<	}
837	<	}
838	<	});
839	<	try {
840	<	t.start();
841	<	Thread.sleep(SHORT_DELAY_MS);
842	<	t.interrupt();
843	<	Thread.sleep(SHORT_DELAY_MS);
844	<	t.join();
845	<	lock.writeLock().unlock();
846	<	} catch(Exception e){
847	<	unexpectedException();
848	<	}
675	>	public void testWriteLockInterruptibly() throws InterruptedException {
676	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
677	>	lock.writeLock().lockInterruptibly();
678	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
679	>	public void realRun() throws InterruptedException {
680	>	lock.writeLock().lockInterruptibly();
681	>	}});
682	>
683	>	Thread.sleep(SHORT_DELAY_MS);
684	>	t.interrupt();
685	>	Thread.sleep(SHORT_DELAY_MS);
686	>	t.join();
687	>	lock.writeLock().unlock();
688		}
689
690		/**
691	<	*  read lockInterruptibly succeeds if lock free else is interruptible
691	>	* read lockInterruptibly succeeds if lock free else is interruptible
692		*/
693	<	public void testReadLockInterruptibly() {
694	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
695	<	try {
696	<	lock.writeLock().lockInterruptibly();
697	<	} catch(Exception e) {
698	<	unexpectedException();
699	<	}
700	<	Thread t = new Thread(new Runnable() {
701	<	public void run() {
702	<	try {
703	<	lock.readLock().lockInterruptibly();
704	<	threadShouldThrow();
866	<	}
867	<	catch(InterruptedException success) {
868	<	}
869	<	}
870	<	});
871	<	try {
872	<	t.start();
873	<	Thread.sleep(SHORT_DELAY_MS);
874	<	t.interrupt();
875	<	t.join();
876	<	lock.writeLock().unlock();
877	<	} catch(Exception e){
878	<	unexpectedException();
879	<	}
693	>	public void testReadLockInterruptibly() throws InterruptedException {
694	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
695	>	lock.writeLock().lockInterruptibly();
696	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
697	>	public void realRun() throws InterruptedException {
698	>	lock.readLock().lockInterruptibly();
699	>	}});
700	>
701	>	Thread.sleep(SHORT_DELAY_MS);
702	>	t.interrupt();
703	>	t.join();
704	>	lock.writeLock().unlock();
705		}
706
707		/**
708		* Calling await without holding lock throws IllegalMonitorStateException
709		*/
710	<	public void testAwait_IllegalMonitor() {
711	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
710	>	public void testAwait_IllegalMonitor() throws InterruptedException {
711	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
712		final Condition c = lock.writeLock().newCondition();
713		try {
714		c.await();
715		shouldThrow();
716	<	}
892	<	catch (IllegalMonitorStateException success) {
893	<	}
894	<	catch (Exception ex) {
895	<	shouldThrow();
896	<	}
716	>	} catch (IllegalMonitorStateException success) {}
717		}
718
719		/**
720		* Calling signal without holding lock throws IllegalMonitorStateException
721		*/
722		public void testSignal_IllegalMonitor() {
723	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
723	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
724		final Condition c = lock.writeLock().newCondition();
725		try {
726		c.signal();
727		shouldThrow();
728	<	}
909	<	catch (IllegalMonitorStateException success) {
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
728	>	} catch (IllegalMonitorStateException success) {}
729		}
730
731		/**
732		* awaitNanos without a signal times out
733		*/
734	<	public void testAwaitNanos_Timeout() {
735	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
734	>	public void testAwaitNanos_Timeout() throws InterruptedException {
735	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
736		final Condition c = lock.writeLock().newCondition();
737	<	try {
738	<	lock.writeLock().lock();
739	<	long t = c.awaitNanos(100);
740	<	assertTrue(t <= 0);
741	<	lock.writeLock().unlock();
927	<	}
928	<	catch (Exception ex) {
929	<	unexpectedException();
930	<	}
737	>
738	>	lock.writeLock().lock();
739	>	long t = c.awaitNanos(100);
740	>	assertTrue(t <= 0);
741	>	lock.writeLock().unlock();
742		}
743
744
745		/**
746	<	*  timed await without a signal times out
746	>	* timed await without a signal times out
747		*/
748	<	public void testAwait_Timeout() {
749	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
748	>	public void testAwait_Timeout() throws InterruptedException {
749	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
750		final Condition c = lock.writeLock().newCondition();
751	<	try {
752	<	lock.writeLock().lock();
753	<	lock.writeLock().unlock();
943	<	}
944	<	catch (Exception ex) {
945	<	unexpectedException();
946	<	}
751	>	lock.writeLock().lock();
752	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
753	>	lock.writeLock().unlock();
754		}
755
756		/**
757		* awaitUntil without a signal times out
758		*/
759	<	public void testAwaitUntil_Timeout() {
760	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
759	>	public void testAwaitUntil_Timeout() throws InterruptedException {
760	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
761		final Condition c = lock.writeLock().newCondition();
762	<	try {
763	<	lock.writeLock().lock();
764	<	java.util.Date d = new java.util.Date();
765	<	lock.writeLock().unlock();
959	<	}
960	<	catch (Exception ex) {
961	<	unexpectedException();
962	<	}
762	>	lock.writeLock().lock();
763	>	java.util.Date d = new java.util.Date();
764	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
765	>	lock.writeLock().unlock();
766		}
767
768		/**
769		* await returns when signalled
770		*/
771	<	public void testAwait() {
772	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
771	>	public void testAwait() throws InterruptedException {
772	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
773		final Condition c = lock.writeLock().newCondition();
774	<	Thread t = new Thread(new Runnable() {
775	<	public void run() {
776	<	try {
777	<	lock.writeLock().lock();
778	<	c.await();
779	<	lock.writeLock().unlock();
977	<	}
978	<	catch(InterruptedException e) {
979	<	threadUnexpectedException();
980	<	}
981	<	}
982	<	});
774	>	Thread t = newStartedThread(new CheckedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.writeLock().lock();
777	>	c.await();
778	>	lock.writeLock().unlock();
779	>	}});
780
781	<	try {
782	<	t.start();
783	<	Thread.sleep(SHORT_DELAY_MS);
784	<	lock.writeLock().lock();
785	<	c.signal();
786	<	lock.writeLock().unlock();
990	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
781	>	Thread.sleep(SHORT_DELAY_MS);
782	>	lock.writeLock().lock();
783	>	c.signal();
784	>	lock.writeLock().unlock();
785	>	t.join(SHORT_DELAY_MS);
786	>	assertFalse(t.isAlive());
787		}
788
789		/** A helper class for uninterruptible wait tests */
790		class UninterruptableThread extends Thread {
791		private Lock lock;
792		private Condition c;
793	<
793	>
794		public volatile boolean canAwake = false;
795		public volatile boolean interrupted = false;
796		public volatile boolean lockStarted = false;
797	<
797	>
798		public UninterruptableThread(Lock lock, Condition c) {
799		this.lock = lock;
800		this.c = c;
801		}
802	<
802	>
803		public synchronized void run() {
804		lock.lock();
805		lockStarted = true;
806	<
806	>
807		while (!canAwake) {
808		c.awaitUninterruptibly();
809		}
810	<
810	>
811		interrupted = isInterrupted();
812		lock.unlock();
813		}
#	Line 1025 | Line 816 | public class ReentrantReadWriteLockTest
816		/**
817		* awaitUninterruptibly doesn't abort on interrupt
818		*/
819	<	public void testAwaitUninterruptibly() {
819	>	public void testAwaitUninterruptibly() throws InterruptedException {
820		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
821		final Condition c = lock.writeLock().newCondition();
822		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
823
824	<	try {
1034	<	thread.start();
1035	<
1036	<	while (!thread.lockStarted) {
1037	<	Thread.sleep(100);
1038	<	}
824	>	thread.start();
825
826	<	lock.writeLock().lock();
827	<	try {
828	<	thread.interrupt();
1043	<	thread.canAwake = true;
1044	<	c.signal();
1045	<	} finally {
1046	<	lock.writeLock().unlock();
1047	<	}
826	>	while (!thread.lockStarted) {
827	>	Thread.sleep(100);
828	>	}
829
830	<	thread.join();
831	<	assertTrue(thread.interrupted);
832	<	assertFalse(thread.isAlive());
833	<	} catch (Exception ex) {
834	<	unexpectedException();
830	>	lock.writeLock().lock();
831	>	try {
832	>	thread.interrupt();
833	>	thread.canAwake = true;
834	>	c.signal();
835	>	} finally {
836	>	lock.writeLock().unlock();
837		}
838	+
839	+	thread.join();
840	+	assertTrue(thread.interrupted);
841	+	assertFalse(thread.isAlive());
842		}
843
844		/**
845		* await is interruptible
846		*/
847	<	public void testAwait_Interrupt() {
848	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
847	>	public void testAwait_Interrupt() throws InterruptedException {
848	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
849		final Condition c = lock.writeLock().newCondition();
850	<	Thread t = new Thread(new Runnable() {
851	<	public void run() {
852	<	try {
853	<	lock.writeLock().lock();
854	<	c.await();
855	<	lock.writeLock().unlock();
1069	<	threadShouldThrow();
1070	<	}
1071	<	catch(InterruptedException success) {
1072	<	}
1073	<	}
1074	<	});
850	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
851	>	public void realRun() throws InterruptedException {
852	>	lock.writeLock().lock();
853	>	c.await();
854	>	lock.writeLock().unlock();
855	>	}});
856
857	<	try {
858	<	t.start();
859	<	Thread.sleep(SHORT_DELAY_MS);
860	<	t.interrupt();
1080	<	t.join(SHORT_DELAY_MS);
1081	<	assertFalse(t.isAlive());
1082	<	}
1083	<	catch (Exception ex) {
1084	<	unexpectedException();
1085	<	}
857	>	Thread.sleep(SHORT_DELAY_MS);
858	>	t.interrupt();
859	>	t.join(SHORT_DELAY_MS);
860	>	assertFalse(t.isAlive());
861		}
862
863		/**
864		* awaitNanos is interruptible
865		*/
866	<	public void testAwaitNanos_Interrupt() {
867	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
866	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
867	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
868		final Condition c = lock.writeLock().newCondition();
869	<	Thread t = new Thread(new Runnable() {
870	<	public void run() {
871	<	try {
872	<	lock.writeLock().lock();
873	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
874	<	lock.writeLock().unlock();
1100	<	threadShouldThrow();
1101	<	}
1102	<	catch(InterruptedException success) {
1103	<	}
1104	<	}
1105	<	});
869	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
870	>	public void realRun() throws InterruptedException {
871	>	lock.writeLock().lock();
872	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
873	>	lock.writeLock().unlock();
874	>	}});
875
876	<	try {
877	<	t.start();
878	<	Thread.sleep(SHORT_DELAY_MS);
879	<	t.interrupt();
1111	<	t.join(SHORT_DELAY_MS);
1112	<	assertFalse(t.isAlive());
1113	<	}
1114	<	catch (Exception ex) {
1115	<	unexpectedException();
1116	<	}
876	>	Thread.sleep(SHORT_DELAY_MS);
877	>	t.interrupt();
878	>	t.join(SHORT_DELAY_MS);
879	>	assertFalse(t.isAlive());
880		}
881
882		/**
883		* awaitUntil is interruptible
884		*/
885	<	public void testAwaitUntil_Interrupt() {
886	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
885	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
886	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
887		final Condition c = lock.writeLock().newCondition();
888	<	Thread t = new Thread(new Runnable() {
889	<	public void run() {
890	<	try {
891	<	lock.writeLock().lock();
892	<	java.util.Date d = new java.util.Date();
893	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
894	<	lock.writeLock().unlock();
1132	<	threadShouldThrow();
1133	<	}
1134	<	catch(InterruptedException success) {
1135	<	}
1136	<	}
1137	<	});
888	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
889	>	public void realRun() throws InterruptedException {
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	>	}});
895
896	<	try {
897	<	t.start();
898	<	Thread.sleep(SHORT_DELAY_MS);
899	<	t.interrupt();
1143	<	t.join(SHORT_DELAY_MS);
1144	<	assertFalse(t.isAlive());
1145	<	}
1146	<	catch (Exception ex) {
1147	<	unexpectedException();
1148	<	}
896	>	Thread.sleep(SHORT_DELAY_MS);
897	>	t.interrupt();
898	>	t.join(SHORT_DELAY_MS);
899	>	assertFalse(t.isAlive());
900		}
901
902		/**
903		* signalAll wakes up all threads
904		*/
905	<	public void testSignalAll() {
906	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
905	>	public void testSignalAll() throws InterruptedException {
906	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
907		final Condition c = lock.writeLock().newCondition();
908	<	Thread t1 = new Thread(new Runnable() {
909	<	public void run() {
910	<	try {
911	<	lock.writeLock().lock();
912	<	c.await();
913	<	lock.writeLock().unlock();
1163	<	}
1164	<	catch(InterruptedException e) {
1165	<	threadUnexpectedException();
1166	<	}
1167	<	}
1168	<	});
1169	<
1170	<	Thread t2 = new Thread(new Runnable() {
1171	<	public void run() {
1172	<	try {
1173	<	lock.writeLock().lock();
1174	<	c.await();
1175	<	lock.writeLock().unlock();
1176	<	}
1177	<	catch(InterruptedException e) {
1178	<	threadUnexpectedException();
1179	<	}
1180	<	}
1181	<	});
908	>	Thread t1 = newStartedThread(new CheckedRunnable() {
909	>	public void realRun() throws InterruptedException {
910	>	lock.writeLock().lock();
911	>	c.await();
912	>	lock.writeLock().unlock();
913	>	}});
914
915	<	try {
916	<	t1.start();
917	<	t2.start();
918	<	Thread.sleep(SHORT_DELAY_MS);
919	<	lock.writeLock().lock();
920	<	c.signalAll();
921	<	lock.writeLock().unlock();
922	<	t1.join(SHORT_DELAY_MS);
923	<	t2.join(SHORT_DELAY_MS);
924	<	assertFalse(t1.isAlive());
925	<	assertFalse(t2.isAlive());
926	<	}
927	<	catch (Exception ex) {
928	<	unexpectedException();
929	<	}
915	>	Thread t2 = newStartedThread(new CheckedRunnable() {
916	>	public void realRun() throws InterruptedException {
917	>	lock.writeLock().lock();
918	>	c.await();
919	>	lock.writeLock().unlock();
920	>	}});
921	>
922	>	Thread.sleep(SHORT_DELAY_MS);
923	>	lock.writeLock().lock();
924	>	c.signalAll();
925	>	lock.writeLock().unlock();
926	>	t1.join(SHORT_DELAY_MS);
927	>	t2.join(SHORT_DELAY_MS);
928	>	assertFalse(t1.isAlive());
929	>	assertFalse(t2.isAlive());
930		}
931
932		/**
933		* A serialized lock deserializes as unlocked
934		*/
935	<	public void testSerialization() {
935	>	public void testSerialization() throws Exception {
936		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
937		l.readLock().lock();
938		l.readLock().unlock();
939
940	<	try {
941	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
942	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
943	<	out.writeObject(l);
944	<	out.close();
945	<
946	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
947	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
948	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
949	<	r.readLock().lock();
1218	<	r.readLock().unlock();
1219	<	} catch(Exception e){
1220	<	e.printStackTrace();
1221	<	unexpectedException();
1222	<	}
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();
949	>	r.readLock().unlock();
950		}
951
952		/**
953		* hasQueuedThreads reports whether there are waiting threads
954		*/
955	<	public void testhasQueuedThreads() {
956	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
955	>	public void testhasQueuedThreads() throws InterruptedException {
956	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
957		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
958		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
959	<	try {
960	<	assertFalse(lock.hasQueuedThreads());
961	<	lock.writeLock().lock();
962	<	t1.start();
963	<	Thread.sleep(SHORT_DELAY_MS);
964	<	assertTrue(lock.hasQueuedThreads());
965	<	t2.start();
966	<	Thread.sleep(SHORT_DELAY_MS);
967	<	assertTrue(lock.hasQueuedThreads());
968	<	t1.interrupt();
969	<	Thread.sleep(SHORT_DELAY_MS);
970	<	assertTrue(lock.hasQueuedThreads());
971	<	lock.writeLock().unlock();
972	<	Thread.sleep(SHORT_DELAY_MS);
973	<	assertFalse(lock.hasQueuedThreads());
974	<	t1.join();
975	<	t2.join();
1249	<	} catch(Exception e){
1250	<	unexpectedException();
1251	<	}
1252	<	}
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();
975	>	}
976
977		/**
978		* hasQueuedThread(null) throws NPE
979		*/
980	<	public void testHasQueuedThreadNPE() {
981	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
980	>	public void testHasQueuedThreadNPE() {
981	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
982		try {
983		sync.hasQueuedThread(null);
984		shouldThrow();
985	<	} catch (NullPointerException success) {
1263	<	}
985	>	} catch (NullPointerException success) {}
986		}
987
988		/**
989		* hasQueuedThread reports whether a thread is queued.
990		*/
991	<	public void testHasQueuedThread() {
992	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
991	>	public void testHasQueuedThread() throws InterruptedException {
992	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
993		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
994		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
995	<	try {
996	<	assertFalse(sync.hasQueuedThread(t1));
997	<	assertFalse(sync.hasQueuedThread(t2));
998	<	sync.writeLock().lock();
999	<	t1.start();
1000	<	Thread.sleep(SHORT_DELAY_MS);
1001	<	assertTrue(sync.hasQueuedThread(t1));
1002	<	t2.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
1004	<	assertTrue(sync.hasQueuedThread(t1));
1005	<	assertTrue(sync.hasQueuedThread(t2));
1006	<	t1.interrupt();
1007	<	Thread.sleep(SHORT_DELAY_MS);
1008	<	assertFalse(sync.hasQueuedThread(t1));
1009	<	assertTrue(sync.hasQueuedThread(t2));
1010	<	sync.writeLock().unlock();
1011	<	Thread.sleep(SHORT_DELAY_MS);
1012	<	assertFalse(sync.hasQueuedThread(t1));
1013	<	Thread.sleep(SHORT_DELAY_MS);
1014	<	assertFalse(sync.hasQueuedThread(t2));
1015	<	t1.join();
1016	<	t2.join();
1295	<	} catch(Exception e){
1296	<	unexpectedException();
1297	<	}
1298	<	}
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();
1016	>	}
1017
1018
1019		/**
1020		* getQueueLength reports number of waiting threads
1021		*/
1022	<	public void testGetQueueLength() {
1023	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1022	>	public void testGetQueueLength() throws InterruptedException {
1023	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1024		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1025		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1026	<	try {
1027	<	assertEquals(0, lock.getQueueLength());
1028	<	lock.writeLock().lock();
1029	<	t1.start();
1030	<	Thread.sleep(SHORT_DELAY_MS);
1031	<	assertEquals(1, lock.getQueueLength());
1032	<	t2.start();
1033	<	Thread.sleep(SHORT_DELAY_MS);
1034	<	assertEquals(2, lock.getQueueLength());
1035	<	t1.interrupt();
1036	<	Thread.sleep(SHORT_DELAY_MS);
1037	<	assertEquals(1, lock.getQueueLength());
1038	<	lock.writeLock().unlock();
1039	<	Thread.sleep(SHORT_DELAY_MS);
1040	<	assertEquals(0, lock.getQueueLength());
1041	<	t1.join();
1042	<	t2.join();
1325	<	} catch(Exception e){
1326	<	unexpectedException();
1327	<	}
1328	<	}
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();
1042	>	}
1043
1044		/**
1045		* getQueuedThreads includes waiting threads
1046		*/
1047	<	public void testGetQueuedThreads() {
1048	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1047	>	public void testGetQueuedThreads() throws InterruptedException {
1048	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1049		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1050		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1051	<	try {
1052	<	assertTrue(lock.getQueuedThreads().isEmpty());
1053	<	lock.writeLock().lock();
1054	<	assertTrue(lock.getQueuedThreads().isEmpty());
1055	<	t1.start();
1056	<	Thread.sleep(SHORT_DELAY_MS);
1057	<	assertTrue(lock.getQueuedThreads().contains(t1));
1058	<	t2.start();
1059	<	Thread.sleep(SHORT_DELAY_MS);
1060	<	assertTrue(lock.getQueuedThreads().contains(t1));
1061	<	assertTrue(lock.getQueuedThreads().contains(t2));
1062	<	t1.interrupt();
1063	<	Thread.sleep(SHORT_DELAY_MS);
1064	<	assertFalse(lock.getQueuedThreads().contains(t1));
1065	<	assertTrue(lock.getQueuedThreads().contains(t2));
1066	<	lock.writeLock().unlock();
1067	<	Thread.sleep(SHORT_DELAY_MS);
1068	<	assertTrue(lock.getQueuedThreads().isEmpty());
1069	<	t1.join();
1070	<	t2.join();
1357	<	} catch(Exception e){
1358	<	unexpectedException();
1359	<	}
1360	<	}
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();
1070	>	}
1071
1072		/**
1073		* hasWaiters throws NPE if null
1074		*/
1075		public void testHasWaitersNPE() {
1076	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1076	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1077		try {
1078		lock.hasWaiters(null);
1079		shouldThrow();
1080	<	} catch (NullPointerException success) {
1371	<	} catch (Exception ex) {
1372	<	unexpectedException();
1373	<	}
1080	>	} catch (NullPointerException success) {}
1081		}
1082
1083		/**
1084		* getWaitQueueLength throws NPE if null
1085		*/
1086		public void testGetWaitQueueLengthNPE() {
1087	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1087	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1088		try {
1089		lock.getWaitQueueLength(null);
1090		shouldThrow();
1091	<	} catch (NullPointerException success) {
1385	<	} catch (Exception ex) {
1386	<	unexpectedException();
1387	<	}
1091	>	} catch (NullPointerException success) {}
1092		}
1093
1094
#	Line 1392 | Line 1096 | public class ReentrantReadWriteLockTest
1096		* getWaitingThreads throws NPE if null
1097		*/
1098		public void testGetWaitingThreadsNPE() {
1099	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1099	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1100		try {
1101		lock.getWaitingThreads(null);
1102		shouldThrow();
1103	<	} catch (NullPointerException success) {
1400	<	} catch (Exception ex) {
1401	<	unexpectedException();
1402	<	}
1103	>	} catch (NullPointerException success) {}
1104		}
1105
1106		/**
1107		* hasWaiters throws IAE if not owned
1108		*/
1109		public void testHasWaitersIAE() {
1110	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1111	<	final Condition c = (lock.writeLock().newCondition());
1112	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1110	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1111	>	final Condition c = lock.writeLock().newCondition();
1112	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1113		try {
1114		lock2.hasWaiters(c);
1115		shouldThrow();
1116	<	} catch (IllegalArgumentException success) {
1416	<	} catch (Exception ex) {
1417	<	unexpectedException();
1418	<	}
1116	>	} catch (IllegalArgumentException success) {}
1117		}
1118
1119		/**
1120		* hasWaiters throws IMSE if not locked
1121		*/
1122		public void testHasWaitersIMSE() {
1123	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1124	<	final Condition c = (lock.writeLock().newCondition());
1123	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1124	>	final Condition c = lock.writeLock().newCondition();
1125		try {
1126		lock.hasWaiters(c);
1127		shouldThrow();
1128	<	} catch (IllegalMonitorStateException success) {
1431	<	} catch (Exception ex) {
1432	<	unexpectedException();
1433	<	}
1128	>	} catch (IllegalMonitorStateException success) {}
1129		}
1130
1131
#	Line 1438 | Line 1133 | public class ReentrantReadWriteLockTest
1133		* getWaitQueueLength throws IAE if not owned
1134		*/
1135		public void testGetWaitQueueLengthIAE() {
1136	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1137	<	final Condition c = (lock.writeLock().newCondition());
1138	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1136	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1137	>	final Condition c = lock.writeLock().newCondition();
1138	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1139		try {
1140		lock2.getWaitQueueLength(c);
1141		shouldThrow();
1142	<	} catch (IllegalArgumentException success) {
1448	<	} catch (Exception ex) {
1449	<	unexpectedException();
1450	<	}
1142	>	} catch (IllegalArgumentException success) {}
1143		}
1144
1145		/**
1146		* getWaitQueueLength throws IMSE if not locked
1147		*/
1148		public void testGetWaitQueueLengthIMSE() {
1149	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1150	<	final Condition c = (lock.writeLock().newCondition());
1149	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1150	>	final Condition c = lock.writeLock().newCondition();
1151		try {
1152		lock.getWaitQueueLength(c);
1153		shouldThrow();
1154	<	} catch (IllegalMonitorStateException success) {
1463	<	} catch (Exception ex) {
1464	<	unexpectedException();
1465	<	}
1154	>	} catch (IllegalMonitorStateException success) {}
1155		}
1156
1157
#	Line 1470 | Line 1159 | public class ReentrantReadWriteLockTest
1159		* getWaitingThreads throws IAE if not owned
1160		*/
1161		public void testGetWaitingThreadsIAE() {
1162	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1163	<	final Condition c = (lock.writeLock().newCondition());
1164	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1162	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1163	>	final Condition c = lock.writeLock().newCondition();
1164	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1165		try {
1166		lock2.getWaitingThreads(c);
1167		shouldThrow();
1168	<	} catch (IllegalArgumentException success) {
1480	<	} catch (Exception ex) {
1481	<	unexpectedException();
1482	<	}
1168	>	} catch (IllegalArgumentException success) {}
1169		}
1170
1171		/**
1172		* getWaitingThreads throws IMSE if not locked
1173		*/
1174		public void testGetWaitingThreadsIMSE() {
1175	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1176	<	final Condition c = (lock.writeLock().newCondition());
1175	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1176	>	final Condition c = lock.writeLock().newCondition();
1177		try {
1178		lock.getWaitingThreads(c);
1179		shouldThrow();
1180	<	} catch (IllegalMonitorStateException success) {
1495	<	} catch (Exception ex) {
1496	<	unexpectedException();
1497	<	}
1180	>	} catch (IllegalMonitorStateException success) {}
1181		}
1182
1183
1184		/**
1185		* hasWaiters returns true when a thread is waiting, else false
1186		*/
1187	<	public void testHasWaiters() {
1188	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1189	<	final Condition c = (lock.writeLock().newCondition());
1190	<	Thread t = new Thread(new Runnable() {
1191	<	public void run() {
1192	<	try {
1193	<	lock.writeLock().lock();
1194	<	threadAssertFalse(lock.hasWaiters(c));
1195	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1196	<	c.await();
1197	<	lock.writeLock().unlock();
1515	<	}
1516	<	catch(InterruptedException e) {
1517	<	threadUnexpectedException();
1518	<	}
1519	<	}
1520	<	});
1187	>	public void testHasWaiters() throws InterruptedException {
1188	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1189	>	final Condition c = lock.writeLock().newCondition();
1190	>	Thread t = newStartedThread(new CheckedRunnable() {
1191	>	public void realRun() throws InterruptedException {
1192	>	lock.writeLock().lock();
1193	>	assertFalse(lock.hasWaiters(c));
1194	>	assertEquals(0, lock.getWaitQueueLength(c));
1195	>	c.await();
1196	>	lock.writeLock().unlock();
1197	>	}});
1198
1199	<	try {
1200	<	t.start();
1201	<	Thread.sleep(SHORT_DELAY_MS);
1202	<	lock.writeLock().lock();
1203	<	assertTrue(lock.hasWaiters(c));
1204	<	assertEquals(1, lock.getWaitQueueLength(c));
1205	<	c.signal();
1206	<	lock.writeLock().unlock();
1207	<	Thread.sleep(SHORT_DELAY_MS);
1208	<	lock.writeLock().lock();
1209	<	assertFalse(lock.hasWaiters(c));
1210	<	assertEquals(0, lock.getWaitQueueLength(c));
1211	<	lock.writeLock().unlock();
1535	<	t.join(SHORT_DELAY_MS);
1536	<	assertFalse(t.isAlive());
1537	<	}
1538	<	catch (Exception ex) {
1539	<	unexpectedException();
1540	<	}
1199	>	Thread.sleep(SHORT_DELAY_MS);
1200	>	lock.writeLock().lock();
1201	>	assertTrue(lock.hasWaiters(c));
1202	>	assertEquals(1, lock.getWaitQueueLength(c));
1203	>	c.signal();
1204	>	lock.writeLock().unlock();
1205	>	Thread.sleep(SHORT_DELAY_MS);
1206	>	lock.writeLock().lock();
1207	>	assertFalse(lock.hasWaiters(c));
1208	>	assertEquals(0, lock.getWaitQueueLength(c));
1209	>	lock.writeLock().unlock();
1210	>	t.join(SHORT_DELAY_MS);
1211	>	assertFalse(t.isAlive());
1212		}
1213
1214		/**
1215		* getWaitQueueLength returns number of waiting threads
1216		*/
1217	<	public void testGetWaitQueueLength() {
1218	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1219	<	final Condition c = (lock.writeLock().newCondition());
1220	<	Thread t = new Thread(new Runnable() {
1221	<	public void run() {
1222	<	try {
1223	<	lock.writeLock().lock();
1224	<	threadAssertFalse(lock.hasWaiters(c));
1225	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1226	<	c.await();
1227	<	lock.writeLock().unlock();
1557	<	}
1558	<	catch(InterruptedException e) {
1559	<	threadUnexpectedException();
1560	<	}
1561	<	}
1562	<	});
1217	>	public void testGetWaitQueueLength() throws InterruptedException {
1218	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1219	>	final Condition c = lock.writeLock().newCondition();
1220	>	Thread t = newStartedThread(new CheckedRunnable() {
1221	>	public void realRun() throws InterruptedException {
1222	>	lock.writeLock().lock();
1223	>	assertFalse(lock.hasWaiters(c));
1224	>	assertEquals(0, lock.getWaitQueueLength(c));
1225	>	c.await();
1226	>	lock.writeLock().unlock();
1227	>	}});
1228
1229	<	try {
1230	<	t.start();
1231	<	Thread.sleep(SHORT_DELAY_MS);
1232	<	lock.writeLock().lock();
1233	<	assertTrue(lock.hasWaiters(c));
1234	<	assertEquals(1, lock.getWaitQueueLength(c));
1235	<	c.signal();
1236	<	lock.writeLock().unlock();
1237	<	Thread.sleep(SHORT_DELAY_MS);
1238	<	lock.writeLock().lock();
1239	<	assertFalse(lock.hasWaiters(c));
1240	<	assertEquals(0, lock.getWaitQueueLength(c));
1241	<	lock.writeLock().unlock();
1577	<	t.join(SHORT_DELAY_MS);
1578	<	assertFalse(t.isAlive());
1579	<	}
1580	<	catch (Exception ex) {
1581	<	unexpectedException();
1582	<	}
1229	>	Thread.sleep(SHORT_DELAY_MS);
1230	>	lock.writeLock().lock();
1231	>	assertTrue(lock.hasWaiters(c));
1232	>	assertEquals(1, lock.getWaitQueueLength(c));
1233	>	c.signal();
1234	>	lock.writeLock().unlock();
1235	>	Thread.sleep(SHORT_DELAY_MS);
1236	>	lock.writeLock().lock();
1237	>	assertFalse(lock.hasWaiters(c));
1238	>	assertEquals(0, lock.getWaitQueueLength(c));
1239	>	lock.writeLock().unlock();
1240	>	t.join(SHORT_DELAY_MS);
1241	>	assertFalse(t.isAlive());
1242		}
1243
1244
1245		/**
1246		* getWaitingThreads returns only and all waiting threads
1247		*/
1248	<	public void testGetWaitingThreads() {
1249	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1248	>	public void testGetWaitingThreads() throws InterruptedException {
1249	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1250		final Condition c = lock.writeLock().newCondition();
1251	<	Thread t1 = new Thread(new Runnable() {
1252	<	public void run() {
1253	<	try {
1254	<	lock.writeLock().lock();
1255	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1256	<	c.await();
1257	<	lock.writeLock().unlock();
1599	<	}
1600	<	catch(InterruptedException e) {
1601	<	threadUnexpectedException();
1602	<	}
1603	<	}
1604	<	});
1605	<
1606	<	Thread t2 = new Thread(new Runnable() {
1607	<	public void run() {
1608	<	try {
1609	<	lock.writeLock().lock();
1610	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1611	<	c.await();
1612	<	lock.writeLock().unlock();
1613	<	}
1614	<	catch(InterruptedException e) {
1615	<	threadUnexpectedException();
1616	<	}
1617	<	}
1618	<	});
1251	>	Thread t1 = new Thread(new CheckedRunnable() {
1252	>	public void realRun() throws InterruptedException {
1253	>	lock.writeLock().lock();
1254	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1255	>	c.await();
1256	>	lock.writeLock().unlock();
1257	>	}});
1258
1259	<	try {
1260	<	lock.writeLock().lock();
1261	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1262	<	lock.writeLock().unlock();
1263	<	t1.start();
1264	<	Thread.sleep(SHORT_DELAY_MS);
1265	<	t2.start();
1266	<	Thread.sleep(SHORT_DELAY_MS);
1267	<	lock.writeLock().lock();
1268	<	assertTrue(lock.hasWaiters(c));
1269	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1270	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1271	<	c.signalAll();
1272	<	lock.writeLock().unlock();
1273	<	Thread.sleep(SHORT_DELAY_MS);
1274	<	lock.writeLock().lock();
1275	<	assertFalse(lock.hasWaiters(c));
1276	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1277	<	lock.writeLock().unlock();
1278	<	t1.join(SHORT_DELAY_MS);
1279	<	t2.join(SHORT_DELAY_MS);
1280	<	assertFalse(t1.isAlive());
1281	<	assertFalse(t2.isAlive());
1282	<	}
1283	<	catch (Exception ex) {
1284	<	unexpectedException();
1285	<	}
1259	>	Thread t2 = new Thread(new CheckedRunnable() {
1260	>	public void realRun() throws InterruptedException {
1261	>	lock.writeLock().lock();
1262	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1263	>	c.await();
1264	>	lock.writeLock().unlock();
1265	>	}});
1266	>
1267	>	lock.writeLock().lock();
1268	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1269	>	lock.writeLock().unlock();
1270	>	t1.start();
1271	>	Thread.sleep(SHORT_DELAY_MS);
1272	>	t2.start();
1273	>	Thread.sleep(SHORT_DELAY_MS);
1274	>	lock.writeLock().lock();
1275	>	assertTrue(lock.hasWaiters(c));
1276	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1277	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1278	>	c.signalAll();
1279	>	lock.writeLock().unlock();
1280	>	Thread.sleep(SHORT_DELAY_MS);
1281	>	lock.writeLock().lock();
1282	>	assertFalse(lock.hasWaiters(c));
1283	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1284	>	lock.writeLock().unlock();
1285	>	t1.join(SHORT_DELAY_MS);
1286	>	t2.join(SHORT_DELAY_MS);
1287	>	assertFalse(t1.isAlive());
1288	>	assertFalse(t2.isAlive());
1289		}
1290
1291		/**

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