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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 1.52 by jsr166, Mon May 2 00:34:12 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);
255	<	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	>	t.join();
245	>	releaseLock(lock.writeLock());
246	>	}
247
248		/**
249		* timed read-tryLock is interruptible
250		*/
251	<	public void testReadTryLock_Interrupted() {
252	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	<	lock.writeLock().lock();
254	<	Thread t = new Thread(new Runnable() {
255	<	public void run() {
256	<	try {
257	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
258	<	threadShouldThrow();
259	<	} catch(InterruptedException success){}
260	<	}
261	<	});
262	<	try {
279	<	t.start();
280	<	t.interrupt();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
251	>	public void testReadTryLock_Interrupted() throws InterruptedException {
252	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
253	>	lock.writeLock().lock();
254	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
255	>	public void realRun() throws InterruptedException {
256	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
257	>	}});
258	>
259	>	Thread.sleep(SHORT_DELAY_MS);
260	>	t.interrupt();
261	>	t.join();
262	>	releaseLock(lock.writeLock());
263		}
264
265	<
265	>
266		/**
267		* write-tryLock fails if locked
268		*/
269	<	public void testWriteTryLockWhenLocked() {
270	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
271	<	lock.writeLock().lock();
272	<	Thread t = new Thread(new Runnable() {
273	<	public void run() {
274	<	threadAssertFalse(lock.writeLock().tryLock());
275	<	}
276	<	});
277	<	try {
278	<	t.start();
279	<	t.join();
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();
834	<	}
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	>	t.join();
686	>	releaseLock(lock.writeLock());
687		}
688
689		/**
690	<	*  read lockInterruptibly succeeds if lock free else is interruptible
690	>	* read lockInterruptibly succeeds if lock free else is interruptible
691		*/
692	<	public void testReadLockInterruptibly() {
693	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	<	try {
695	<	lock.writeLock().lockInterruptibly();
696	<	} catch(Exception e) {
697	<	unexpectedException();
698	<	}
699	<	Thread t = new Thread(new Runnable() {
700	<	public void run() {
701	<	try {
702	<	lock.readLock().lockInterruptibly();
703	<	threadShouldThrow();
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	<	}
692	>	public void testReadLockInterruptibly() throws InterruptedException {
693	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
694	>	lock.writeLock().lockInterruptibly();
695	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
696	>	public void realRun() throws InterruptedException {
697	>	lock.readLock().lockInterruptibly();
698	>	}});
699	>
700	>	Thread.sleep(SHORT_DELAY_MS);
701	>	t.interrupt();
702	>	t.join();
703	>	releaseLock(lock.writeLock());
704		}
705
706		/**
707		* Calling await without holding lock throws IllegalMonitorStateException
708		*/
709	<	public void testAwait_IllegalMonitor() {
710	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
709	>	public void testAwait_IllegalMonitor() throws InterruptedException {
710	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
711		final Condition c = lock.writeLock().newCondition();
712		try {
713		c.await();
714		shouldThrow();
715	<	}
892	<	catch (IllegalMonitorStateException success) {
893	<	}
894	<	catch (Exception ex) {
895	<	shouldThrow();
896	<	}
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	<	}
909	<	catch (IllegalMonitorStateException success) {
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
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();
927	<	}
928	<	catch (Exception ex) {
929	<	unexpectedException();
930	<	}
736	>
737	>	lock.writeLock().lock();
738	>	long t = c.awaitNanos(100);
739	>	assertTrue(t <= 0);
740	>	lock.writeLock().unlock();
741		}
742
743
744		/**
745	<	*  timed await without a signal times out
745	>	* timed await without a signal times out
746		*/
747	<	public void testAwait_Timeout() {
748	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
747	>	public void testAwait_Timeout() throws InterruptedException {
748	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749		final Condition c = lock.writeLock().newCondition();
750	<	try {
751	<	lock.writeLock().lock();
752	<	lock.writeLock().unlock();
943	<	}
944	<	catch (Exception ex) {
945	<	unexpectedException();
946	<	}
750	>	lock.writeLock().lock();
751	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
752	>	lock.writeLock().unlock();
753		}
754
755		/**
756		* awaitUntil without a signal times out
757		*/
758	<	public void testAwaitUntil_Timeout() {
759	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758	>	public void testAwaitUntil_Timeout() throws InterruptedException {
759	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
760		final Condition c = lock.writeLock().newCondition();
761	<	try {
762	<	lock.writeLock().lock();
763	<	java.util.Date d = new java.util.Date();
764	<	lock.writeLock().unlock();
959	<	}
960	<	catch (Exception ex) {
961	<	unexpectedException();
962	<	}
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();
977	<	}
978	<	catch(InterruptedException e) {
979	<	threadUnexpectedException();
980	<	}
981	<	}
982	<	});
773	>	Thread t = newStartedThread(new CheckedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	lock.writeLock().lock();
776	>	c.await();
777	>	lock.writeLock().unlock();
778	>	}});
779
780	<	try {
781	<	t.start();
782	<	Thread.sleep(SHORT_DELAY_MS);
783	<	lock.writeLock().lock();
784	<	c.signal();
785	<	lock.writeLock().unlock();
990	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
780	>	Thread.sleep(SHORT_DELAY_MS);
781	>	lock.writeLock().lock();
782	>	c.signal();
783	>	lock.writeLock().unlock();
784	>	t.join(SHORT_DELAY_MS);
785	>	assertFalse(t.isAlive());
786		}
787
788		/** A helper class for uninterruptible wait tests */
789		class UninterruptableThread extends Thread {
790		private Lock lock;
791		private Condition c;
792	<
792	>
793		public volatile boolean canAwake = false;
794		public volatile boolean interrupted = false;
795		public volatile boolean lockStarted = false;
796	<
796	>
797		public UninterruptableThread(Lock lock, Condition c) {
798		this.lock = lock;
799		this.c = c;
800		}
801	<
801	>
802		public synchronized void run() {
803		lock.lock();
804		lockStarted = true;
805	<
805	>
806		while (!canAwake) {
807		c.awaitUninterruptibly();
808		}
809	<
809	>
810		interrupted = isInterrupted();
811		lock.unlock();
812		}
#	Line 1025 | Line 815 | public class ReentrantReadWriteLockTest
815		/**
816		* awaitUninterruptibly doesn't abort on interrupt
817		*/
818	<	public void testAwaitUninterruptibly() {
818	>	public void testAwaitUninterruptibly() throws InterruptedException {
819		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
820		final Condition c = lock.writeLock().newCondition();
821		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
822
823	<	try {
1034	<	thread.start();
1035	<
1036	<	while (!thread.lockStarted) {
1037	<	Thread.sleep(100);
1038	<	}
823	>	thread.start();
824
825	<	lock.writeLock().lock();
826	<	try {
827	<	thread.interrupt();
1043	<	thread.canAwake = true;
1044	<	c.signal();
1045	<	} finally {
1046	<	lock.writeLock().unlock();
1047	<	}
825	>	while (!thread.lockStarted) {
826	>	Thread.sleep(100);
827	>	}
828
829	<	thread.join();
830	<	assertTrue(thread.interrupted);
831	<	assertFalse(thread.isAlive());
832	<	} catch (Exception ex) {
833	<	unexpectedException();
829	>	lock.writeLock().lock();
830	>	try {
831	>	thread.interrupt();
832	>	thread.canAwake = true;
833	>	c.signal();
834	>	} finally {
835	>	lock.writeLock().unlock();
836		}
837	+
838	+	thread.join();
839	+	assertTrue(thread.interrupted);
840	+	assertFalse(thread.isAlive());
841		}
842
843		/**
844		* await is interruptible
845		*/
846	<	public void testAwait_Interrupt() {
847	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
846	>	public void testAwait_Interrupt() throws InterruptedException {
847	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848		final Condition c = lock.writeLock().newCondition();
849	<	Thread t = new Thread(new Runnable() {
850	<	public void run() {
851	<	try {
852	<	lock.writeLock().lock();
853	<	c.await();
854	<	lock.writeLock().unlock();
855	<	threadShouldThrow();
856	<	}
857	<	catch(InterruptedException success) {
858	<	}
859	<	}
860	<	});
861	<
862	<	try {
863	<	t.start();
864	<	Thread.sleep(SHORT_DELAY_MS);
1079	<	t.interrupt();
1080	<	t.join(SHORT_DELAY_MS);
1081	<	assertFalse(t.isAlive());
1082	<	}
1083	<	catch (Exception ex) {
1084	<	unexpectedException();
1085	<	}
849	>	final CountDownLatch locked = new CountDownLatch(1);
850	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
851	>	public void realRun() throws InterruptedException {
852	>	lock.writeLock().lock();
853	>	assertTrue(lock.isWriteLocked());
854	>	locked.countDown();
855	>	try { c.await(); }
856	>	finally { lock.writeLock().unlock(); }
857	>	}});
858	>
859	>	locked.await();
860	>	while (lock.isWriteLocked())
861	>	Thread.yield();
862	>	t.interrupt();
863	>	awaitTermination(t, LONG_DELAY_MS);
864	>	assertFalse(lock.isWriteLocked());
865		}
866
867		/**
868		* awaitNanos is interruptible
869		*/
870	<	public void testAwaitNanos_Interrupt() {
871	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
870	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
871	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
872		final Condition c = lock.writeLock().newCondition();
873	<	Thread t = new Thread(new Runnable() {
874	<	public void run() {
875	<	try {
876	<	lock.writeLock().lock();
877	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
878	<	lock.writeLock().unlock();
879	<	threadShouldThrow();
880	<	}
881	<	catch(InterruptedException success) {
882	<	}
883	<	}
884	<	});
885	<
886	<	try {
887	<	t.start();
888	<	Thread.sleep(SHORT_DELAY_MS);
1110	<	t.interrupt();
1111	<	t.join(SHORT_DELAY_MS);
1112	<	assertFalse(t.isAlive());
1113	<	}
1114	<	catch (Exception ex) {
1115	<	unexpectedException();
1116	<	}
873	>	final CountDownLatch locked = new CountDownLatch(1);
874	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
875	>	public void realRun() throws InterruptedException {
876	>	lock.writeLock().lock();
877	>	assertTrue(lock.isWriteLocked());
878	>	locked.countDown();
879	>	try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); }
880	>	finally { lock.writeLock().unlock(); }
881	>	}});
882	>
883	>	locked.await();
884	>	while (lock.isWriteLocked())
885	>	Thread.yield();
886	>	t.interrupt();
887	>	awaitTermination(t, LONG_DELAY_MS);
888	>	assertFalse(lock.isWriteLocked());
889		}
890
891		/**
892		* awaitUntil is interruptible
893		*/
894	<	public void testAwaitUntil_Interrupt() {
895	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
895	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
896		final Condition c = lock.writeLock().newCondition();
897	<	Thread t = new Thread(new Runnable() {
898	<	public void run() {
899	<	try {
900	<	lock.writeLock().lock();
901	<	java.util.Date d = new java.util.Date();
902	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
903	<	lock.writeLock().unlock();
904	<	threadShouldThrow();
905	<	}
906	<	catch(InterruptedException success) {
907	<	}
908	<	}
909	<	});
910	<
911	<	try {
912	<	t.start();
913	<	Thread.sleep(SHORT_DELAY_MS);
1142	<	t.interrupt();
1143	<	t.join(SHORT_DELAY_MS);
1144	<	assertFalse(t.isAlive());
1145	<	}
1146	<	catch (Exception ex) {
1147	<	unexpectedException();
1148	<	}
897	>	final CountDownLatch locked = new CountDownLatch(1);
898	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
899	>	public void realRun() throws InterruptedException {
900	>	lock.writeLock().lock();
901	>	assertTrue(lock.isWriteLocked());
902	>	locked.countDown();
903	>	java.util.Date d = new java.util.Date();
904	>	try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); }
905	>	finally { lock.writeLock().unlock(); }
906	>	}});
907	>
908	>	locked.await();
909	>	while (lock.isWriteLocked())
910	>	Thread.yield();
911	>	t.interrupt();
912	>	awaitTermination(t, LONG_DELAY_MS);
913	>	assertFalse(lock.isWriteLocked());
914		}
915
916		/**
917		* signalAll wakes up all threads
918		*/
919	<	public void testSignalAll() {
920	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
919	>	public void testSignalAll() throws InterruptedException {
920	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
921		final Condition c = lock.writeLock().newCondition();
922	<	Thread t1 = new Thread(new Runnable() {
923	<	public void run() {
924	<	try {
925	<	lock.writeLock().lock();
926	<	c.await();
927	<	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	<	});
922	>	Thread t1 = newStartedThread(new CheckedRunnable() {
923	>	public void realRun() throws InterruptedException {
924	>	lock.writeLock().lock();
925	>	c.await();
926	>	lock.writeLock().unlock();
927	>	}});
928
929	<	try {
930	<	t1.start();
931	<	t2.start();
932	<	Thread.sleep(SHORT_DELAY_MS);
933	<	lock.writeLock().lock();
934	<	c.signalAll();
935	<	lock.writeLock().unlock();
936	<	t1.join(SHORT_DELAY_MS);
937	<	t2.join(SHORT_DELAY_MS);
938	<	assertFalse(t1.isAlive());
939	<	assertFalse(t2.isAlive());
940	<	}
941	<	catch (Exception ex) {
942	<	unexpectedException();
943	<	}
929	>	Thread t2 = newStartedThread(new CheckedRunnable() {
930	>	public void realRun() throws InterruptedException {
931	>	lock.writeLock().lock();
932	>	c.await();
933	>	lock.writeLock().unlock();
934	>	}});
935	>
936	>	Thread.sleep(SHORT_DELAY_MS);
937	>	lock.writeLock().lock();
938	>	c.signalAll();
939	>	lock.writeLock().unlock();
940	>	t1.join(SHORT_DELAY_MS);
941	>	t2.join(SHORT_DELAY_MS);
942	>	assertFalse(t1.isAlive());
943	>	assertFalse(t2.isAlive());
944		}
945
946		/**
947		* A serialized lock deserializes as unlocked
948		*/
949	<	public void testSerialization() {
949	>	public void testSerialization() throws Exception {
950		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
951		l.readLock().lock();
952		l.readLock().unlock();
953
954	<	try {
955	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
956	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
957	<	out.writeObject(l);
958	<	out.close();
959	<
960	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
961	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
962	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
963	<	r.readLock().lock();
1218	<	r.readLock().unlock();
1219	<	} catch(Exception e){
1220	<	e.printStackTrace();
1221	<	unexpectedException();
1222	<	}
954	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
955	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
956	>	out.writeObject(l);
957	>	out.close();
958	>
959	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
960	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
961	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
962	>	r.readLock().lock();
963	>	r.readLock().unlock();
964		}
965
966		/**
967		* hasQueuedThreads reports whether there are waiting threads
968		*/
969	<	public void testhasQueuedThreads() {
970	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
969	>	public void testhasQueuedThreads() throws InterruptedException {
970	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
971		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
972		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
973	<	try {
974	<	assertFalse(lock.hasQueuedThreads());
975	<	lock.writeLock().lock();
976	<	t1.start();
977	<	Thread.sleep(SHORT_DELAY_MS);
978	<	assertTrue(lock.hasQueuedThreads());
979	<	t2.start();
980	<	Thread.sleep(SHORT_DELAY_MS);
981	<	assertTrue(lock.hasQueuedThreads());
982	<	t1.interrupt();
983	<	Thread.sleep(SHORT_DELAY_MS);
984	<	assertTrue(lock.hasQueuedThreads());
985	<	lock.writeLock().unlock();
986	<	Thread.sleep(SHORT_DELAY_MS);
987	<	assertFalse(lock.hasQueuedThreads());
988	<	t1.join();
989	<	t2.join();
1249	<	} catch(Exception e){
1250	<	unexpectedException();
1251	<	}
1252	<	}
973	>	assertFalse(lock.hasQueuedThreads());
974	>	lock.writeLock().lock();
975	>	t1.start();
976	>	Thread.sleep(SHORT_DELAY_MS);
977	>	assertTrue(lock.hasQueuedThreads());
978	>	t2.start();
979	>	Thread.sleep(SHORT_DELAY_MS);
980	>	assertTrue(lock.hasQueuedThreads());
981	>	t1.interrupt();
982	>	Thread.sleep(SHORT_DELAY_MS);
983	>	assertTrue(lock.hasQueuedThreads());
984	>	lock.writeLock().unlock();
985	>	Thread.sleep(SHORT_DELAY_MS);
986	>	assertFalse(lock.hasQueuedThreads());
987	>	t1.join();
988	>	t2.join();
989	>	}
990
991		/**
992		* hasQueuedThread(null) throws NPE
993		*/
994	<	public void testHasQueuedThreadNPE() {
995	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
994	>	public void testHasQueuedThreadNPE() {
995	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
996		try {
997		sync.hasQueuedThread(null);
998		shouldThrow();
999	<	} catch (NullPointerException success) {
1263	<	}
999	>	} catch (NullPointerException success) {}
1000		}
1001
1002		/**
1003		* hasQueuedThread reports whether a thread is queued.
1004		*/
1005	<	public void testHasQueuedThread() {
1006	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1005	>	public void testHasQueuedThread() throws InterruptedException {
1006	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1007		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1008		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1009	<	try {
1010	<	assertFalse(sync.hasQueuedThread(t1));
1011	<	assertFalse(sync.hasQueuedThread(t2));
1012	<	sync.writeLock().lock();
1013	<	t1.start();
1014	<	Thread.sleep(SHORT_DELAY_MS);
1015	<	assertTrue(sync.hasQueuedThread(t1));
1016	<	t2.start();
1017	<	Thread.sleep(SHORT_DELAY_MS);
1018	<	assertTrue(sync.hasQueuedThread(t1));
1019	<	assertTrue(sync.hasQueuedThread(t2));
1020	<	t1.interrupt();
1021	<	Thread.sleep(SHORT_DELAY_MS);
1022	<	assertFalse(sync.hasQueuedThread(t1));
1023	<	assertTrue(sync.hasQueuedThread(t2));
1024	<	sync.writeLock().unlock();
1025	<	Thread.sleep(SHORT_DELAY_MS);
1026	<	assertFalse(sync.hasQueuedThread(t1));
1027	<	Thread.sleep(SHORT_DELAY_MS);
1028	<	assertFalse(sync.hasQueuedThread(t2));
1029	<	t1.join();
1030	<	t2.join();
1295	<	} catch(Exception e){
1296	<	unexpectedException();
1297	<	}
1298	<	}
1009	>	assertFalse(sync.hasQueuedThread(t1));
1010	>	assertFalse(sync.hasQueuedThread(t2));
1011	>	sync.writeLock().lock();
1012	>	t1.start();
1013	>	Thread.sleep(SHORT_DELAY_MS);
1014	>	assertTrue(sync.hasQueuedThread(t1));
1015	>	t2.start();
1016	>	Thread.sleep(SHORT_DELAY_MS);
1017	>	assertTrue(sync.hasQueuedThread(t1));
1018	>	assertTrue(sync.hasQueuedThread(t2));
1019	>	t1.interrupt();
1020	>	Thread.sleep(SHORT_DELAY_MS);
1021	>	assertFalse(sync.hasQueuedThread(t1));
1022	>	assertTrue(sync.hasQueuedThread(t2));
1023	>	sync.writeLock().unlock();
1024	>	Thread.sleep(SHORT_DELAY_MS);
1025	>	assertFalse(sync.hasQueuedThread(t1));
1026	>	Thread.sleep(SHORT_DELAY_MS);
1027	>	assertFalse(sync.hasQueuedThread(t2));
1028	>	t1.join();
1029	>	t2.join();
1030	>	}
1031
1032
1033		/**
1034		* getQueueLength reports number of waiting threads
1035		*/
1036	<	public void testGetQueueLength() {
1037	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1036	>	public void testGetQueueLength() throws InterruptedException {
1037	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1038		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1039		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1040	<	try {
1041	<	assertEquals(0, lock.getQueueLength());
1042	<	lock.writeLock().lock();
1043	<	t1.start();
1044	<	Thread.sleep(SHORT_DELAY_MS);
1045	<	assertEquals(1, lock.getQueueLength());
1046	<	t2.start();
1047	<	Thread.sleep(SHORT_DELAY_MS);
1048	<	assertEquals(2, lock.getQueueLength());
1049	<	t1.interrupt();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	assertEquals(1, lock.getQueueLength());
1052	<	lock.writeLock().unlock();
1053	<	Thread.sleep(SHORT_DELAY_MS);
1054	<	assertEquals(0, lock.getQueueLength());
1055	<	t1.join();
1056	<	t2.join();
1325	<	} catch(Exception e){
1326	<	unexpectedException();
1327	<	}
1328	<	}
1040	>	assertEquals(0, lock.getQueueLength());
1041	>	lock.writeLock().lock();
1042	>	t1.start();
1043	>	Thread.sleep(SHORT_DELAY_MS);
1044	>	assertEquals(1, lock.getQueueLength());
1045	>	t2.start();
1046	>	Thread.sleep(SHORT_DELAY_MS);
1047	>	assertEquals(2, lock.getQueueLength());
1048	>	t1.interrupt();
1049	>	Thread.sleep(SHORT_DELAY_MS);
1050	>	assertEquals(1, lock.getQueueLength());
1051	>	lock.writeLock().unlock();
1052	>	Thread.sleep(SHORT_DELAY_MS);
1053	>	assertEquals(0, lock.getQueueLength());
1054	>	t1.join();
1055	>	t2.join();
1056	>	}
1057
1058		/**
1059		* getQueuedThreads includes waiting threads
1060		*/
1061	<	public void testGetQueuedThreads() {
1062	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1061	>	public void testGetQueuedThreads() throws InterruptedException {
1062	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1063		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1064		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1065	<	try {
1066	<	assertTrue(lock.getQueuedThreads().isEmpty());
1067	<	lock.writeLock().lock();
1068	<	assertTrue(lock.getQueuedThreads().isEmpty());
1069	<	t1.start();
1070	<	Thread.sleep(SHORT_DELAY_MS);
1071	<	assertTrue(lock.getQueuedThreads().contains(t1));
1072	<	t2.start();
1073	<	Thread.sleep(SHORT_DELAY_MS);
1074	<	assertTrue(lock.getQueuedThreads().contains(t1));
1075	<	assertTrue(lock.getQueuedThreads().contains(t2));
1076	<	t1.interrupt();
1077	<	Thread.sleep(SHORT_DELAY_MS);
1078	<	assertFalse(lock.getQueuedThreads().contains(t1));
1079	<	assertTrue(lock.getQueuedThreads().contains(t2));
1080	<	lock.writeLock().unlock();
1081	<	Thread.sleep(SHORT_DELAY_MS);
1082	<	assertTrue(lock.getQueuedThreads().isEmpty());
1083	<	t1.join();
1084	<	t2.join();
1357	<	} catch(Exception e){
1358	<	unexpectedException();
1359	<	}
1360	<	}
1065	>	assertTrue(lock.getQueuedThreads().isEmpty());
1066	>	lock.writeLock().lock();
1067	>	assertTrue(lock.getQueuedThreads().isEmpty());
1068	>	t1.start();
1069	>	Thread.sleep(SHORT_DELAY_MS);
1070	>	assertTrue(lock.getQueuedThreads().contains(t1));
1071	>	t2.start();
1072	>	Thread.sleep(SHORT_DELAY_MS);
1073	>	assertTrue(lock.getQueuedThreads().contains(t1));
1074	>	assertTrue(lock.getQueuedThreads().contains(t2));
1075	>	t1.interrupt();
1076	>	Thread.sleep(SHORT_DELAY_MS);
1077	>	assertFalse(lock.getQueuedThreads().contains(t1));
1078	>	assertTrue(lock.getQueuedThreads().contains(t2));
1079	>	lock.writeLock().unlock();
1080	>	Thread.sleep(SHORT_DELAY_MS);
1081	>	assertTrue(lock.getQueuedThreads().isEmpty());
1082	>	t1.join();
1083	>	t2.join();
1084	>	}
1085
1086		/**
1087		* hasWaiters throws NPE if null
1088		*/
1089		public void testHasWaitersNPE() {
1090	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1090	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1091		try {
1092		lock.hasWaiters(null);
1093		shouldThrow();
1094	<	} catch (NullPointerException success) {
1371	<	} catch (Exception ex) {
1372	<	unexpectedException();
1373	<	}
1094	>	} catch (NullPointerException success) {}
1095		}
1096
1097		/**
1098		* getWaitQueueLength throws NPE if null
1099		*/
1100		public void testGetWaitQueueLengthNPE() {
1101	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1101	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1102		try {
1103		lock.getWaitQueueLength(null);
1104		shouldThrow();
1105	<	} catch (NullPointerException success) {
1385	<	} catch (Exception ex) {
1386	<	unexpectedException();
1387	<	}
1105	>	} catch (NullPointerException success) {}
1106		}
1107
1108
#	Line 1392 | Line 1110 | public class ReentrantReadWriteLockTest
1110		* getWaitingThreads throws NPE if null
1111		*/
1112		public void testGetWaitingThreadsNPE() {
1113	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1113	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1114		try {
1115		lock.getWaitingThreads(null);
1116		shouldThrow();
1117	<	} catch (NullPointerException success) {
1400	<	} catch (Exception ex) {
1401	<	unexpectedException();
1402	<	}
1117	>	} catch (NullPointerException success) {}
1118		}
1119
1120		/**
1121		* hasWaiters throws IAE if not owned
1122		*/
1123		public void testHasWaitersIAE() {
1124	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1125	<	final Condition c = (lock.writeLock().newCondition());
1126	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1124	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1125	>	final Condition c = lock.writeLock().newCondition();
1126	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1127		try {
1128		lock2.hasWaiters(c);
1129		shouldThrow();
1130	<	} catch (IllegalArgumentException success) {
1416	<	} catch (Exception ex) {
1417	<	unexpectedException();
1418	<	}
1130	>	} catch (IllegalArgumentException success) {}
1131		}
1132
1133		/**
1134		* hasWaiters throws IMSE if not locked
1135		*/
1136		public void testHasWaitersIMSE() {
1137	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1138	<	final Condition c = (lock.writeLock().newCondition());
1137	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1138	>	final Condition c = lock.writeLock().newCondition();
1139		try {
1140		lock.hasWaiters(c);
1141		shouldThrow();
1142	<	} catch (IllegalMonitorStateException success) {
1431	<	} catch (Exception ex) {
1432	<	unexpectedException();
1433	<	}
1142	>	} catch (IllegalMonitorStateException success) {}
1143		}
1144
1145
#	Line 1438 | Line 1147 | public class ReentrantReadWriteLockTest
1147		* getWaitQueueLength throws IAE if not owned
1148		*/
1149		public void testGetWaitQueueLengthIAE() {
1150	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1151	<	final Condition c = (lock.writeLock().newCondition());
1152	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1150	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1151	>	final Condition c = lock.writeLock().newCondition();
1152	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1153		try {
1154		lock2.getWaitQueueLength(c);
1155		shouldThrow();
1156	<	} catch (IllegalArgumentException success) {
1448	<	} catch (Exception ex) {
1449	<	unexpectedException();
1450	<	}
1156	>	} catch (IllegalArgumentException success) {}
1157		}
1158
1159		/**
1160		* getWaitQueueLength throws IMSE if not locked
1161		*/
1162		public void testGetWaitQueueLengthIMSE() {
1163	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1164	<	final Condition c = (lock.writeLock().newCondition());
1163	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1164	>	final Condition c = lock.writeLock().newCondition();
1165		try {
1166		lock.getWaitQueueLength(c);
1167		shouldThrow();
1168	<	} catch (IllegalMonitorStateException success) {
1463	<	} catch (Exception ex) {
1464	<	unexpectedException();
1465	<	}
1168	>	} catch (IllegalMonitorStateException success) {}
1169		}
1170
1171
#	Line 1470 | Line 1173 | public class ReentrantReadWriteLockTest
1173		* getWaitingThreads throws IAE if not owned
1174		*/
1175		public void testGetWaitingThreadsIAE() {
1176	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1177	<	final Condition c = (lock.writeLock().newCondition());
1178	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1176	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1177	>	final Condition c = lock.writeLock().newCondition();
1178	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1179		try {
1180		lock2.getWaitingThreads(c);
1181		shouldThrow();
1182	<	} catch (IllegalArgumentException success) {
1480	<	} catch (Exception ex) {
1481	<	unexpectedException();
1482	<	}
1182	>	} catch (IllegalArgumentException success) {}
1183		}
1184
1185		/**
1186		* getWaitingThreads throws IMSE if not locked
1187		*/
1188		public void testGetWaitingThreadsIMSE() {
1189	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1190	<	final Condition c = (lock.writeLock().newCondition());
1189	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1190	>	final Condition c = lock.writeLock().newCondition();
1191		try {
1192		lock.getWaitingThreads(c);
1193		shouldThrow();
1194	<	} catch (IllegalMonitorStateException success) {
1495	<	} catch (Exception ex) {
1496	<	unexpectedException();
1497	<	}
1194	>	} catch (IllegalMonitorStateException success) {}
1195		}
1196
1197
1198		/**
1199		* hasWaiters returns true when a thread is waiting, else false
1200		*/
1201	<	public void testHasWaiters() {
1202	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1203	<	final Condition c = (lock.writeLock().newCondition());
1204	<	Thread t = new Thread(new Runnable() {
1205	<	public void run() {
1206	<	try {
1207	<	lock.writeLock().lock();
1208	<	threadAssertFalse(lock.hasWaiters(c));
1209	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1210	<	c.await();
1211	<	lock.writeLock().unlock();
1515	<	}
1516	<	catch(InterruptedException e) {
1517	<	threadUnexpectedException();
1518	<	}
1519	<	}
1520	<	});
1201	>	public void testHasWaiters() throws InterruptedException {
1202	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1203	>	final Condition c = lock.writeLock().newCondition();
1204	>	Thread t = newStartedThread(new CheckedRunnable() {
1205	>	public void realRun() throws InterruptedException {
1206	>	lock.writeLock().lock();
1207	>	assertFalse(lock.hasWaiters(c));
1208	>	assertEquals(0, lock.getWaitQueueLength(c));
1209	>	c.await();
1210	>	lock.writeLock().unlock();
1211	>	}});
1212
1213	<	try {
1214	<	t.start();
1215	<	Thread.sleep(SHORT_DELAY_MS);
1216	<	lock.writeLock().lock();
1217	<	assertTrue(lock.hasWaiters(c));
1218	<	assertEquals(1, lock.getWaitQueueLength(c));
1219	<	c.signal();
1220	<	lock.writeLock().unlock();
1221	<	Thread.sleep(SHORT_DELAY_MS);
1222	<	lock.writeLock().lock();
1223	<	assertFalse(lock.hasWaiters(c));
1224	<	assertEquals(0, lock.getWaitQueueLength(c));
1225	<	lock.writeLock().unlock();
1535	<	t.join(SHORT_DELAY_MS);
1536	<	assertFalse(t.isAlive());
1537	<	}
1538	<	catch (Exception ex) {
1539	<	unexpectedException();
1540	<	}
1213	>	Thread.sleep(SHORT_DELAY_MS);
1214	>	lock.writeLock().lock();
1215	>	assertTrue(lock.hasWaiters(c));
1216	>	assertEquals(1, lock.getWaitQueueLength(c));
1217	>	c.signal();
1218	>	lock.writeLock().unlock();
1219	>	Thread.sleep(SHORT_DELAY_MS);
1220	>	lock.writeLock().lock();
1221	>	assertFalse(lock.hasWaiters(c));
1222	>	assertEquals(0, lock.getWaitQueueLength(c));
1223	>	lock.writeLock().unlock();
1224	>	t.join(SHORT_DELAY_MS);
1225	>	assertFalse(t.isAlive());
1226		}
1227
1228		/**
1229		* getWaitQueueLength returns number of waiting threads
1230		*/
1231	<	public void testGetWaitQueueLength() {
1232	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1233	<	final Condition c = (lock.writeLock().newCondition());
1234	<	Thread t = new Thread(new Runnable() {
1235	<	public void run() {
1236	<	try {
1237	<	lock.writeLock().lock();
1238	<	threadAssertFalse(lock.hasWaiters(c));
1239	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1240	<	c.await();
1241	<	lock.writeLock().unlock();
1557	<	}
1558	<	catch(InterruptedException e) {
1559	<	threadUnexpectedException();
1560	<	}
1561	<	}
1562	<	});
1231	>	public void testGetWaitQueueLength() throws InterruptedException {
1232	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1233	>	final Condition c = lock.writeLock().newCondition();
1234	>	Thread t = newStartedThread(new CheckedRunnable() {
1235	>	public void realRun() throws InterruptedException {
1236	>	lock.writeLock().lock();
1237	>	assertFalse(lock.hasWaiters(c));
1238	>	assertEquals(0, lock.getWaitQueueLength(c));
1239	>	c.await();
1240	>	lock.writeLock().unlock();
1241	>	}});
1242
1243	<	try {
1244	<	t.start();
1245	<	Thread.sleep(SHORT_DELAY_MS);
1246	<	lock.writeLock().lock();
1247	<	assertTrue(lock.hasWaiters(c));
1248	<	assertEquals(1, lock.getWaitQueueLength(c));
1249	<	c.signal();
1250	<	lock.writeLock().unlock();
1251	<	Thread.sleep(SHORT_DELAY_MS);
1252	<	lock.writeLock().lock();
1253	<	assertFalse(lock.hasWaiters(c));
1254	<	assertEquals(0, lock.getWaitQueueLength(c));
1255	<	lock.writeLock().unlock();
1577	<	t.join(SHORT_DELAY_MS);
1578	<	assertFalse(t.isAlive());
1579	<	}
1580	<	catch (Exception ex) {
1581	<	unexpectedException();
1582	<	}
1243	>	Thread.sleep(SHORT_DELAY_MS);
1244	>	lock.writeLock().lock();
1245	>	assertTrue(lock.hasWaiters(c));
1246	>	assertEquals(1, lock.getWaitQueueLength(c));
1247	>	c.signal();
1248	>	lock.writeLock().unlock();
1249	>	Thread.sleep(SHORT_DELAY_MS);
1250	>	lock.writeLock().lock();
1251	>	assertFalse(lock.hasWaiters(c));
1252	>	assertEquals(0, lock.getWaitQueueLength(c));
1253	>	lock.writeLock().unlock();
1254	>	t.join(SHORT_DELAY_MS);
1255	>	assertFalse(t.isAlive());
1256		}
1257
1258
1259		/**
1260		* getWaitingThreads returns only and all waiting threads
1261		*/
1262	<	public void testGetWaitingThreads() {
1263	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1262	>	public void testGetWaitingThreads() throws InterruptedException {
1263	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1264		final Condition c = lock.writeLock().newCondition();
1265	<	Thread t1 = new Thread(new Runnable() {
1266	<	public void run() {
1267	<	try {
1268	<	lock.writeLock().lock();
1269	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1270	<	c.await();
1271	<	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	<	});
1265	>	Thread t1 = new Thread(new CheckedRunnable() {
1266	>	public void realRun() throws InterruptedException {
1267	>	lock.writeLock().lock();
1268	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1269	>	c.await();
1270	>	lock.writeLock().unlock();
1271	>	}});
1272
1273	<	try {
1274	<	lock.writeLock().lock();
1275	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1276	<	lock.writeLock().unlock();
1277	<	t1.start();
1278	<	Thread.sleep(SHORT_DELAY_MS);
1279	<	t2.start();
1280	<	Thread.sleep(SHORT_DELAY_MS);
1281	<	lock.writeLock().lock();
1282	<	assertTrue(lock.hasWaiters(c));
1283	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1284	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1285	<	c.signalAll();
1286	<	lock.writeLock().unlock();
1287	<	Thread.sleep(SHORT_DELAY_MS);
1288	<	lock.writeLock().lock();
1289	<	assertFalse(lock.hasWaiters(c));
1290	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1291	<	lock.writeLock().unlock();
1292	<	t1.join(SHORT_DELAY_MS);
1293	<	t2.join(SHORT_DELAY_MS);
1294	<	assertFalse(t1.isAlive());
1295	<	assertFalse(t2.isAlive());
1296	<	}
1297	<	catch (Exception ex) {
1298	<	unexpectedException();
1299	<	}
1273	>	Thread t2 = new Thread(new CheckedRunnable() {
1274	>	public void realRun() throws InterruptedException {
1275	>	lock.writeLock().lock();
1276	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1277	>	c.await();
1278	>	lock.writeLock().unlock();
1279	>	}});
1280	>
1281	>	lock.writeLock().lock();
1282	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1283	>	lock.writeLock().unlock();
1284	>	t1.start();
1285	>	Thread.sleep(SHORT_DELAY_MS);
1286	>	t2.start();
1287	>	Thread.sleep(SHORT_DELAY_MS);
1288	>	lock.writeLock().lock();
1289	>	assertTrue(lock.hasWaiters(c));
1290	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1291	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1292	>	c.signalAll();
1293	>	lock.writeLock().unlock();
1294	>	Thread.sleep(SHORT_DELAY_MS);
1295	>	lock.writeLock().lock();
1296	>	assertFalse(lock.hasWaiters(c));
1297	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1298	>	lock.writeLock().unlock();
1299	>	t1.join(SHORT_DELAY_MS);
1300	>	t2.join(SHORT_DELAY_MS);
1301	>	assertFalse(t1.isAlive());
1302	>	assertFalse(t2.isAlive());
1303		}
1304
1305		/**

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