ViewVC Help

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

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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.63 by jsr166, Sat May 21 06:24:33 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.atomic.AtomicBoolean;
11		import java.util.concurrent.locks.*;
12		import java.util.concurrent.*;
13	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14		import java.io.*;
15		import java.util.*;
16
17		public class ReentrantReadWriteLockTest extends JSR166TestCase {
18		public static void main(String[] args) {
19	<	junit.textui.TestRunner.run (suite());
19	>	junit.textui.TestRunner.run(suite());
20		}
21		public static Test suite() {
22	<	return new TestSuite(ReentrantReadWriteLockTest.class);
22	>	return new TestSuite(ReentrantReadWriteLockTest.class);
23		}
24
25		/**
26		* A runnable calling lockInterruptibly
27		*/
28	<	class InterruptibleLockRunnable implements Runnable {
28	>	class InterruptibleLockRunnable extends CheckedRunnable {
29		final ReentrantReadWriteLock lock;
30		InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
31	<	public void run() {
32	<	try {
31	<	lock.writeLock().lockInterruptibly();
32	<	} catch(InterruptedException success){}
31	>	public void realRun() throws InterruptedException {
32	>	lock.writeLock().lockInterruptibly();
33		}
34		}
35
36	–
36		/**
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	>	PublicReentrantReadWriteLock(boolean fair) { super(fair); }
54	>	public Thread getOwner() {
55	>	return super.getOwner();
56		}
57	<	public Collection<Thread> getWaitingThreads(Condition c) {
58	<	return super.getWaitingThreads(c);
57	>	public Collection<Thread> getQueuedThreads() {
58	>	return super.getQueuedThreads();
59	>	}
60	>	public Collection<Thread> getWaitingThreads(Condition c) {
61	>	return super.getWaitingThreads(c);
62		}
63		}
64
65		/**
66	<	* Constructor sets given fairness, and is in unlocked state
66	>	* Releases write lock, checking that it had a hold count of 1.
67		*/
68	<	public void testConstructor() {
69	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
70	<	assertFalse(rl.isFair());
71	<	assertFalse(rl.isWriteLocked());
72	<	assertEquals(0, rl.getReadLockCount());
73	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
74	<	assertTrue(r2.isFair());
75	<	assertFalse(r2.isWriteLocked());
76	<	assertEquals(0, r2.getReadLockCount());
68	>	void releaseWriteLock(PublicReentrantReadWriteLock lock) {
69	>	ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
70	>	assertWriteLockedByMoi(lock);
71	>	assertEquals(1, lock.getWriteHoldCount());
72	>	writeLock.unlock();
73	>	assertNotWriteLocked(lock);
74		}
75
76		/**
77	<	* write-locking and read-locking an unlocked lock succeed
77	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
78		*/
79	<	public void testLock() {
80	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
81	<	rl.writeLock().lock();
82	<	assertTrue(rl.isWriteLocked());
83	<	assertTrue(rl.isWriteLockedByCurrentThread());
84	<	assertEquals(0, rl.getReadLockCount());
85	<	rl.writeLock().unlock();
86	<	assertFalse(rl.isWriteLocked());
87	<	assertFalse(rl.isWriteLockedByCurrentThread());
91	<	assertEquals(0, rl.getReadLockCount());
92	<	rl.readLock().lock();
93	<	assertFalse(rl.isWriteLocked());
94	<	assertFalse(rl.isWriteLockedByCurrentThread());
95	<	assertEquals(1, rl.getReadLockCount());
96	<	rl.readLock().unlock();
97	<	assertFalse(rl.isWriteLocked());
98	<	assertFalse(rl.isWriteLockedByCurrentThread());
99	<	assertEquals(0, rl.getReadLockCount());
79	>	void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) {
80	>	long startTime = System.nanoTime();
81	>	while (!lock.hasQueuedThread(t)) {
82	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
83	>	throw new AssertionFailedError("timed out");
84	>	Thread.yield();
85	>	}
86	>	assertTrue(t.isAlive());
87	>	assertTrue(lock.getOwner() != t);
88		}
89
90	+	/**
91	+	* Checks that lock is not write-locked.
92	+	*/
93	+	void assertNotWriteLocked(PublicReentrantReadWriteLock lock) {
94	+	assertFalse(lock.isWriteLocked());
95	+	assertFalse(lock.isWriteLockedByCurrentThread());
96	+	assertFalse(lock.writeLock().isHeldByCurrentThread());
97	+	assertEquals(0, lock.getWriteHoldCount());
98	+	assertEquals(0, lock.writeLock().getHoldCount());
99	+	assertNull(lock.getOwner());
100	+	}
101
102		/**
103	<	* locking an unlocked fair lock succeeds
104	<	*/
105	<	public void testFairLock() {
106	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
107	<	rl.writeLock().lock();
108	<	assertTrue(rl.isWriteLocked());
109	<	assertTrue(rl.isWriteLockedByCurrentThread());
110	<	assertEquals(0, rl.getReadLockCount());
111	<	rl.writeLock().unlock();
112	<	assertFalse(rl.isWriteLocked());
113	<	assertFalse(rl.isWriteLockedByCurrentThread());
114	<	assertEquals(0, rl.getReadLockCount());
115	<	rl.readLock().lock();
116	<	assertFalse(rl.isWriteLocked());
118	<	assertFalse(rl.isWriteLockedByCurrentThread());
119	<	assertEquals(1, rl.getReadLockCount());
120	<	rl.readLock().unlock();
121	<	assertFalse(rl.isWriteLocked());
122	<	assertFalse(rl.isWriteLockedByCurrentThread());
123	<	assertEquals(0, rl.getReadLockCount());
103	>	* Checks that lock is write-locked by the given thread.
104	>	*/
105	>	void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) {
106	>	assertTrue(lock.isWriteLocked());
107	>	assertSame(t, lock.getOwner());
108	>	assertEquals(t == Thread.currentThread(),
109	>	lock.isWriteLockedByCurrentThread());
110	>	assertEquals(t == Thread.currentThread(),
111	>	lock.writeLock().isHeldByCurrentThread());
112	>	assertEquals(t == Thread.currentThread(),
113	>	lock.getWriteHoldCount() > 0);
114	>	assertEquals(t == Thread.currentThread(),
115	>	lock.writeLock().getHoldCount() > 0);
116	>	assertEquals(0, lock.getReadLockCount());
117		}
118
119		/**
120	<	* getWriteHoldCount returns number of recursive holds
120	>	* Checks that lock is write-locked by the current thread.
121		*/
122	<	public void testGetHoldCount() {
123	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
131	<	for(int i = 1; i <= SIZE; i++) {
132	<	lock.writeLock().lock();
133	<	assertEquals(i,lock.getWriteHoldCount());
134	<	}
135	<	for(int i = SIZE; i > 0; i--) {
136	<	lock.writeLock().unlock();
137	<	assertEquals(i-1,lock.getWriteHoldCount());
138	<	}
122	>	void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) {
123	>	assertWriteLockedBy(lock, Thread.currentThread());
124		}
140	–
125
126		/**
127	<	* write-unlocking an unlocked lock throws IllegalMonitorStateException
127	>	* Checks that condition c has no waiters.
128		*/
129	<	public void testUnlock_IllegalMonitorStateException() {
130	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
147	<	try {
148	<	rl.writeLock().unlock();
149	<	shouldThrow();
150	<	} catch(IllegalMonitorStateException success){}
129	>	void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) {
130	>	assertHasWaiters(lock, c, new Thread[] {});
131		}
132
133	+	/**
134	+	* Checks that condition c has exactly the given waiter threads.
135	+	*/
136	+	void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c,
137	+	Thread... threads) {
138	+	lock.writeLock().lock();
139	+	assertEquals(threads.length > 0, lock.hasWaiters(c));
140	+	assertEquals(threads.length, lock.getWaitQueueLength(c));
141	+	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
142	+	assertEquals(threads.length, lock.getWaitingThreads(c).size());
143	+	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
144	+	new HashSet<Thread>(Arrays.asList(threads)));
145	+	lock.writeLock().unlock();
146	+	}
147	+
148	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
149
150		/**
151	<	* write-lockInterruptibly is interruptible
151	>	* Awaits condition using the specified AwaitMethod.
152		*/
153	<	public void testWriteLockInterruptibly_Interrupted() {
154	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
155	<	lock.writeLock().lock();
156	<	Thread t = new Thread(new Runnable() {
157	<	public void run() {
158	<	try {
159	<	lock.writeLock().lockInterruptibly();
160	<	threadShouldThrow();
161	<	} catch(InterruptedException success){}
162	<	}
163	<	});
164	<	try {
165	<	t.start();
166	<	t.interrupt();
167	<	lock.writeLock().unlock();
168	<	t.join();
169	<	} catch(Exception e){
174	<	unexpectedException();
153	>	void await(Condition c, AwaitMethod awaitMethod)
154	>	throws InterruptedException {
155	>	switch (awaitMethod) {
156	>	case await:
157	>	c.await();
158	>	break;
159	>	case awaitTimed:
160	>	assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS));
161	>	break;
162	>	case awaitNanos:
163	>	long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
164	>	assertTrue(nanosRemaining > 0);
165	>	break;
166	>	case awaitUntil:
167	>	java.util.Date d = new java.util.Date();
168	>	assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)));
169	>	break;
170		}
171	<	}
171	>	}
172
173		/**
174	<	* timed write-tryLock is interruptible
174	>	* Constructor sets given fairness, and is in unlocked state
175		*/
176	<	public void testWriteTryLock_Interrupted() {
177	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
178	<	lock.writeLock().lock();
179	<	Thread t = new Thread(new Runnable() {
180	<	public void run() {
181	<	try {
182	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
183	<	threadShouldThrow();
184	<	} catch(InterruptedException success){}
185	<	}
186	<	});
187	<	try {
188	<	t.start();
189	<	t.interrupt();
190	<	lock.writeLock().unlock();
191	<	t.join();
192	<	} catch(Exception e){
198	<	unexpectedException();
199	<	}
176	>	public void testConstructor() {
177	>	PublicReentrantReadWriteLock lock;
178	>
179	>	lock = new PublicReentrantReadWriteLock();
180	>	assertFalse(lock.isFair());
181	>	assertNotWriteLocked(lock);
182	>	assertEquals(0, lock.getReadLockCount());
183	>
184	>	lock = new PublicReentrantReadWriteLock(true);
185	>	assertTrue(lock.isFair());
186	>	assertNotWriteLocked(lock);
187	>	assertEquals(0, lock.getReadLockCount());
188	>
189	>	lock = new PublicReentrantReadWriteLock(false);
190	>	assertFalse(lock.isFair());
191	>	assertNotWriteLocked(lock);
192	>	assertEquals(0, lock.getReadLockCount());
193		}
194
195		/**
196	<	* read-lockInterruptibly is interruptible
196	>	* write-locking and read-locking an unlocked lock succeed
197		*/
198	<	public void testReadLockInterruptibly_Interrupted() {
199	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
200	<	lock.writeLock().lock();
201	<	Thread t = new Thread(new Runnable() {
202	<	public void run() {
203	<	try {
204	<	lock.readLock().lockInterruptibly();
205	<	threadShouldThrow();
206	<	} catch(InterruptedException success){}
207	<	}
208	<	});
209	<	try {
210	<	t.start();
211	<	t.interrupt();
198	>	public void testLock()      { testLock(false); }
199	>	public void testLock_fair() { testLock(true); }
200	>	public void testLock(boolean fair) {
201	>	PublicReentrantReadWriteLock lock =
202	>	new PublicReentrantReadWriteLock(fair);
203	>	assertNotWriteLocked(lock);
204	>	lock.writeLock().lock();
205	>	assertWriteLockedByMoi(lock);
206	>	lock.writeLock().unlock();
207	>	assertNotWriteLocked(lock);
208	>	assertEquals(0, lock.getReadLockCount());
209	>	lock.readLock().lock();
210	>	assertNotWriteLocked(lock);
211	>	assertEquals(1, lock.getReadLockCount());
212	>	lock.readLock().unlock();
213	>	assertNotWriteLocked(lock);
214	>	assertEquals(0, lock.getReadLockCount());
215	>	}
216	>
217	>	/**
218	>	* getWriteHoldCount returns number of recursive holds
219	>	*/
220	>	public void testGetWriteHoldCount()      { testGetWriteHoldCount(false); }
221	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
222	>	public void testGetWriteHoldCount(boolean fair) {
223	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
224	>	for (int i = 1; i <= SIZE; i++) {
225	>	lock.writeLock().lock();
226	>	assertEquals(i,lock.getWriteHoldCount());
227	>	}
228	>	for (int i = SIZE; i > 0; i--) {
229		lock.writeLock().unlock();
230	<	t.join();
221	<	} catch(Exception e){
222	<	unexpectedException();
230	>	assertEquals(i-1,lock.getWriteHoldCount());
231		}
232	<	}
232	>	}
233
234		/**
235	<	* timed read-tryLock is interruptible
235	>	* writelock.getHoldCount returns number of recursive holds
236		*/
237	<	public void testReadTryLock_Interrupted() {
238	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
239	<	lock.writeLock().lock();
240	<	Thread t = new Thread(new Runnable() {
241	<	public void run() {
242	<	try {
243	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
244	<	threadShouldThrow();
245	<	} catch(InterruptedException success){}
246	<	}
247	<	});
240	<	try {
241	<	t.start();
242	<	t.interrupt();
243	<	t.join();
244	<	} catch(Exception e){
245	<	unexpectedException();
237	>	public void testGetHoldCount()      { testGetHoldCount(false); }
238	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
239	>	public void testGetHoldCount(boolean fair) {
240	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
241	>	for (int i = 1; i <= SIZE; i++) {
242	>	lock.writeLock().lock();
243	>	assertEquals(i,lock.writeLock().getHoldCount());
244	>	}
245	>	for (int i = SIZE; i > 0; i--) {
246	>	lock.writeLock().unlock();
247	>	assertEquals(i-1,lock.writeLock().getHoldCount());
248		}
249		}
250
249	–
251		/**
252	<	* write-tryLock fails if locked
252	>	* getReadHoldCount returns number of recursive holds
253		*/
254	<	public void testWriteTryLockWhenLocked() {
255	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
256	<	lock.writeLock().lock();
257	<	Thread t = new Thread(new Runnable() {
258	<	public void run() {
259	<	threadAssertFalse(lock.writeLock().tryLock());
260	<	}
260	<	});
261	<	try {
262	<	t.start();
263	<	t.join();
264	<	lock.writeLock().unlock();
265	<	} catch(Exception e){
266	<	unexpectedException();
254	>	public void testGetReadHoldCount()      { testGetReadHoldCount(false); }
255	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
256	>	public void testGetReadHoldCount(boolean fair) {
257	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
258	>	for (int i = 1; i <= SIZE; i++) {
259	>	lock.readLock().lock();
260	>	assertEquals(i,lock.getReadHoldCount());
261		}
262	<	}
262	>	for (int i = SIZE; i > 0; i--) {
263	>	lock.readLock().unlock();
264	>	assertEquals(i-1,lock.getReadHoldCount());
265	>	}
266	>	}
267
268		/**
269	<	* read-tryLock fails if locked
269	>	* write-unlocking an unlocked lock throws IllegalMonitorStateException
270		*/
271	<	public void testReadTryLockWhenLocked() {
272	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
273	<	lock.writeLock().lock();
274	<	Thread t = new Thread(new Runnable() {
277	<	public void run() {
278	<	threadAssertFalse(lock.readLock().tryLock());
279	<	}
280	<	});
271	>	public void testWriteUnlock_IMSE()      { testWriteUnlock_IMSE(false); }
272	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
273	>	public void testWriteUnlock_IMSE(boolean fair) {
274	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
275		try {
282	–	t.start();
283	–	t.join();
276		lock.writeLock().unlock();
277	<	} catch(Exception e){
278	<	unexpectedException();
279	<	}
288	<	}
277	>	shouldThrow();
278	>	} catch (IllegalMonitorStateException success) {}
279	>	}
280
281		/**
282	<	* Multiple threads can hold a read lock when not write-locked
282	>	* read-unlocking an unlocked lock throws IllegalMonitorStateException
283		*/
284	<	public void testMultipleReadLocks() {
285	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	<	lock.readLock().lock();
287	<	Thread t = new Thread(new Runnable() {
297	<	public void run() {
298	<	threadAssertTrue(lock.readLock().tryLock());
299	<	lock.readLock().unlock();
300	<	}
301	<	});
284	>	public void testReadUnlock_IMSE()      { testReadUnlock_IMSE(false); }
285	>	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
286	>	public void testReadUnlock_IMSE(boolean fair) {
287	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
288		try {
303	–	t.start();
304	–	t.join();
289		lock.readLock().unlock();
290	<	} catch(Exception e){
291	<	unexpectedException();
292	<	}
309	<	}
290	>	shouldThrow();
291	>	} catch (IllegalMonitorStateException success) {}
292	>	}
293
294		/**
295	<	* A writelock succeeds after reading threads unlock
295	>	* write-lockInterruptibly is interruptible
296		*/
297	<	public void testWriteAfterMultipleReadLocks() {
298	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
299	<	lock.readLock().lock();
300	<	Thread t1 = new Thread(new Runnable() {
301	<	public void run() {
302	<	lock.readLock().lock();
303	<	lock.readLock().unlock();
304	<	}
305	<	});
306	<	Thread t2 = new Thread(new Runnable() {
324	<	public void run() {
325	<	lock.writeLock().lock();
326	<	lock.writeLock().unlock();
327	<	}
328	<	});
297	>	public void testWriteLockInterruptibly_Interruptible()      { testWriteLockInterruptibly_Interruptible(false); }
298	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
299	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
300	>	final PublicReentrantReadWriteLock lock =
301	>	new PublicReentrantReadWriteLock(fair);
302	>	lock.writeLock().lock();
303	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
304	>	public void realRun() throws InterruptedException {
305	>	lock.writeLock().lockInterruptibly();
306	>	}});
307
308	<	try {
309	<	t1.start();
310	<	t2.start();
311	<	Thread.sleep(SHORT_DELAY_MS);
312	<	lock.readLock().unlock();
335	<	t1.join(MEDIUM_DELAY_MS);
336	<	t2.join(MEDIUM_DELAY_MS);
337	<	assertTrue(!t1.isAlive());
338	<	assertTrue(!t2.isAlive());
339	<
340	<	} catch(Exception e){
341	<	unexpectedException();
342	<	}
343	<	}
308	>	waitForQueuedThread(lock, t);
309	>	t.interrupt();
310	>	awaitTermination(t);
311	>	releaseWriteLock(lock);
312	>	}
313
314		/**
315	<	* Readlocks succeed after a writing thread unlocks
315	>	* timed write-tryLock is interruptible
316		*/
317	<	public void testReadAfterWriteLock() {
318	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319	<	lock.writeLock().lock();
320	<	Thread t1 = new Thread(new Runnable() {
321	<	public void run() {
322	<	lock.readLock().lock();
323	<	lock.readLock().unlock();
324	<	}
325	<	});
326	<	Thread t2 = new Thread(new Runnable() {
327	<	public void run() {
328	<	lock.readLock().lock();
329	<	lock.readLock().unlock();
330	<	}
331	<	});
317	>	public void testWriteTryLock_Interruptible()      { testWriteTryLock_Interruptible(false); }
318	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
319	>	public void testWriteTryLock_Interruptible(boolean fair) {
320	>	final PublicReentrantReadWriteLock lock =
321	>	new PublicReentrantReadWriteLock(fair);
322	>	lock.writeLock().lock();
323	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
324	>	public void realRun() throws InterruptedException {
325	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
326	>	}});
327	>
328	>	waitForQueuedThread(lock, t);
329	>	t.interrupt();
330	>	awaitTermination(t);
331	>	releaseWriteLock(lock);
332	>	}
333
334	<	try {
335	<	t1.start();
336	<	t2.start();
337	<	Thread.sleep(SHORT_DELAY_MS);
338	<	lock.writeLock().unlock();
339	<	t1.join(MEDIUM_DELAY_MS);
340	<	t2.join(MEDIUM_DELAY_MS);
341	<	assertTrue(!t1.isAlive());
342	<	assertTrue(!t2.isAlive());
343	<
344	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
347	<	}
334	>	/**
335	>	* read-lockInterruptibly is interruptible
336	>	*/
337	>	public void testReadLockInterruptibly_Interruptible()      { testReadLockInterruptibly_Interruptible(false); }
338	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
339	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
340	>	final PublicReentrantReadWriteLock lock =
341	>	new PublicReentrantReadWriteLock(fair);
342	>	lock.writeLock().lock();
343	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
344	>	public void realRun() throws InterruptedException {
345	>	lock.readLock().lockInterruptibly();
346	>	}});
347	>
348	>	waitForQueuedThread(lock, t);
349	>	t.interrupt();
350	>	awaitTermination(t);
351	>	releaseWriteLock(lock);
352	>	}
353
354	+	/**
355	+	* timed read-tryLock is interruptible
356	+	*/
357	+	public void testReadTryLock_Interruptible()      { testReadTryLock_Interruptible(false); }
358	+	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
359	+	public void testReadTryLock_Interruptible(boolean fair) {
360	+	final PublicReentrantReadWriteLock lock =
361	+	new PublicReentrantReadWriteLock(fair);
362	+	lock.writeLock().lock();
363	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
364	+	public void realRun() throws InterruptedException {
365	+	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
366	+	}});
367	+
368	+	waitForQueuedThread(lock, t);
369	+	t.interrupt();
370	+	awaitTermination(t);
371	+	releaseWriteLock(lock);
372	+	}
373	+
374	+	/**
375	+	* write-tryLock on an unlocked lock succeeds
376	+	*/
377	+	public void testWriteTryLock()      { testWriteTryLock(false); }
378	+	public void testWriteTryLock_fair() { testWriteTryLock(true); }
379	+	public void testWriteTryLock(boolean fair) {
380	+	final PublicReentrantReadWriteLock lock =
381	+	new PublicReentrantReadWriteLock(fair);
382	+	assertTrue(lock.writeLock().tryLock());
383	+	assertWriteLockedByMoi(lock);
384	+	assertTrue(lock.writeLock().tryLock());
385	+	assertWriteLockedByMoi(lock);
386	+	lock.writeLock().unlock();
387	+	releaseWriteLock(lock);
388	+	}
389	+
390	+	/**
391	+	* write-tryLock fails if locked
392	+	*/
393	+	public void testWriteTryLockWhenLocked()      { testWriteTryLockWhenLocked(false); }
394	+	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
395	+	public void testWriteTryLockWhenLocked(boolean fair) {
396	+	final PublicReentrantReadWriteLock lock =
397	+	new PublicReentrantReadWriteLock(fair);
398	+	lock.writeLock().lock();
399	+	Thread t = newStartedThread(new CheckedRunnable() {
400	+	public void realRun() {
401	+	assertFalse(lock.writeLock().tryLock());
402	+	}});
403	+
404	+	awaitTermination(t);
405	+	releaseWriteLock(lock);
406	+	}
407	+
408	+	/**
409	+	* read-tryLock fails if locked
410	+	*/
411	+	public void testReadTryLockWhenLocked()      { testReadTryLockWhenLocked(false); }
412	+	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
413	+	public void testReadTryLockWhenLocked(boolean fair) {
414	+	final PublicReentrantReadWriteLock lock =
415	+	new PublicReentrantReadWriteLock(fair);
416	+	lock.writeLock().lock();
417	+	Thread t = newStartedThread(new CheckedRunnable() {
418	+	public void realRun() {
419	+	assertFalse(lock.readLock().tryLock());
420	+	}});
421	+
422	+	awaitTermination(t);
423	+	releaseWriteLock(lock);
424	+	}
425	+
426	+	/**
427	+	* Multiple threads can hold a read lock when not write-locked
428	+	*/
429	+	public void testMultipleReadLocks()      { testMultipleReadLocks(false); }
430	+	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
431	+	public void testMultipleReadLocks(boolean fair) {
432	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
433	+	lock.readLock().lock();
434	+	Thread t = newStartedThread(new CheckedRunnable() {
435	+	public void realRun() throws InterruptedException {
436	+	assertTrue(lock.readLock().tryLock());
437	+	lock.readLock().unlock();
438	+	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
439	+	lock.readLock().unlock();
440	+	lock.readLock().lock();
441	+	lock.readLock().unlock();
442	+	}});
443	+
444	+	awaitTermination(t);
445	+	lock.readLock().unlock();
446	+	}
447	+
448	+	/**
449	+	* A writelock succeeds only after a reading thread unlocks
450	+	*/
451	+	public void testWriteAfterReadLock()      { testWriteAfterReadLock(false); }
452	+	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
453	+	public void testWriteAfterReadLock(boolean fair) {
454	+	final PublicReentrantReadWriteLock lock =
455	+	new PublicReentrantReadWriteLock(fair);
456	+	lock.readLock().lock();
457	+	Thread t = newStartedThread(new CheckedRunnable() {
458	+	public void realRun() {
459	+	assertEquals(1, lock.getReadLockCount());
460	+	lock.writeLock().lock();
461	+	assertEquals(0, lock.getReadLockCount());
462	+	lock.writeLock().unlock();
463	+	}});
464	+	waitForQueuedThread(lock, t);
465	+	assertNotWriteLocked(lock);
466	+	assertEquals(1, lock.getReadLockCount());
467	+	lock.readLock().unlock();
468	+	assertEquals(0, lock.getReadLockCount());
469	+	awaitTermination(t);
470	+	assertNotWriteLocked(lock);
471	+	}
472	+
473	+	/**
474	+	* A writelock succeeds only after reading threads unlock
475	+	*/
476	+	public void testWriteAfterMultipleReadLocks()      { testWriteAfterMultipleReadLocks(false); }
477	+	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
478	+	public void testWriteAfterMultipleReadLocks(boolean fair) {
479	+	final PublicReentrantReadWriteLock lock =
480	+	new PublicReentrantReadWriteLock(fair);
481	+	lock.readLock().lock();
482	+	lock.readLock().lock();
483	+	Thread t1 = newStartedThread(new CheckedRunnable() {
484	+	public void realRun() {
485	+	lock.readLock().lock();
486	+	assertEquals(3, lock.getReadLockCount());
487	+	lock.readLock().unlock();
488	+	}});
489	+	awaitTermination(t1);
490	+
491	+	Thread t2 = newStartedThread(new CheckedRunnable() {
492	+	public void realRun() {
493	+	assertEquals(2, lock.getReadLockCount());
494	+	lock.writeLock().lock();
495	+	assertEquals(0, lock.getReadLockCount());
496	+	lock.writeLock().unlock();
497	+	}});
498	+	waitForQueuedThread(lock, t2);
499	+	assertNotWriteLocked(lock);
500	+	assertEquals(2, lock.getReadLockCount());
501	+	lock.readLock().unlock();
502	+	lock.readLock().unlock();
503	+	assertEquals(0, lock.getReadLockCount());
504	+	awaitTermination(t2);
505	+	assertNotWriteLocked(lock);
506	+	}
507	+
508	+	/**
509	+	* A thread that tries to acquire a fair read lock (non-reentrantly)
510	+	* will block if there is a waiting writer thread.
511	+	*/
512	+	public void testReaderWriterReaderFairFifo() {
513	+	final PublicReentrantReadWriteLock lock =
514	+	new PublicReentrantReadWriteLock(true);
515	+	final AtomicBoolean t1GotLock = new AtomicBoolean(false);
516	+
517	+	lock.readLock().lock();
518	+	Thread t1 = newStartedThread(new CheckedRunnable() {
519	+	public void realRun() {
520	+	assertEquals(1, lock.getReadLockCount());
521	+	lock.writeLock().lock();
522	+	assertEquals(0, lock.getReadLockCount());
523	+	t1GotLock.set(true);
524	+	lock.writeLock().unlock();
525	+	}});
526	+	waitForQueuedThread(lock, t1);
527	+
528	+	Thread t2 = newStartedThread(new CheckedRunnable() {
529	+	public void realRun() {
530	+	assertEquals(1, lock.getReadLockCount());
531	+	lock.readLock().lock();
532	+	assertEquals(1, lock.getReadLockCount());
533	+	assertTrue(t1GotLock.get());
534	+	lock.readLock().unlock();
535	+	}});
536	+	waitForQueuedThread(lock, t2);
537	+	assertTrue(t1.isAlive());
538	+	assertNotWriteLocked(lock);
539	+	assertEquals(1, lock.getReadLockCount());
540	+	lock.readLock().unlock();
541	+	awaitTermination(t1);
542	+	awaitTermination(t2);
543	+	assertNotWriteLocked(lock);
544	+	}
545	+
546	+	/**
547	+	* Readlocks succeed only after a writing thread unlocks
548	+	*/
549	+	public void testReadAfterWriteLock()      { testReadAfterWriteLock(false); }
550	+	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
551	+	public void testReadAfterWriteLock(boolean fair) {
552	+	final PublicReentrantReadWriteLock lock =
553	+	new PublicReentrantReadWriteLock(fair);
554	+	lock.writeLock().lock();
555	+	Thread t1 = newStartedThread(new CheckedRunnable() {
556	+	public void realRun() {
557	+	lock.readLock().lock();
558	+	lock.readLock().unlock();
559	+	}});
560	+	Thread t2 = newStartedThread(new CheckedRunnable() {
561	+	public void realRun() {
562	+	lock.readLock().lock();
563	+	lock.readLock().unlock();
564	+	}});
565	+
566	+	waitForQueuedThread(lock, t1);
567	+	waitForQueuedThread(lock, t2);
568	+	releaseWriteLock(lock);
569	+	awaitTermination(t1);
570	+	awaitTermination(t2);
571	+	}
572	+
573	+	/**
574	+	* Read trylock succeeds if write locked by current thread
575	+	*/
576	+	public void testReadHoldingWriteLock()      { testReadHoldingWriteLock(false); }
577	+	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
578	+	public void testReadHoldingWriteLock(boolean fair) {
579	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
580	+	lock.writeLock().lock();
581	+	assertTrue(lock.readLock().tryLock());
582	+	lock.readLock().unlock();
583	+	lock.writeLock().unlock();
584	+	}
585	+
586	+	/**
587	+	* Read trylock succeeds (barging) even in the presence of waiting readers and/or writers.
588	+	*/
589	+	public void testReadTryLockBarging()      { testReadTryLockBarging(false); }
590	+	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
591	+	public void testReadTryLockBarging(boolean fair) {
592	+	final PublicReentrantReadWriteLock lock =
593	+	new PublicReentrantReadWriteLock(fair);
594	+	lock.readLock().lock();
595	+
596	+	Thread t1 = newStartedThread(new CheckedRunnable() {
597	+	public void realRun() {
598	+	lock.writeLock().lock();
599	+	lock.writeLock().unlock();
600	+	}});
601	+
602	+	waitForQueuedThread(lock, t1);
603	+
604	+	Thread t2 = newStartedThread(new CheckedRunnable() {
605	+	public void realRun() {
606	+	lock.readLock().lock();
607	+	lock.readLock().unlock();
608	+	}});
609	+
610	+	if (fair)
611	+	waitForQueuedThread(lock, t2);
612	+
613	+	Thread t3 = newStartedThread(new CheckedRunnable() {
614	+	public void realRun() {
615	+	lock.readLock().tryLock();
616	+	lock.readLock().unlock();
617	+	}});
618	+
619	+	assertTrue(lock.getReadLockCount() > 0);
620	+	awaitTermination(t3);
621	+	assertTrue(t1.isAlive());
622	+	if (fair) assertTrue(t2.isAlive());
623	+	lock.readLock().unlock();
624	+	awaitTermination(t1);
625	+	awaitTermination(t2);
626	+	}
627	+
628	+	/**
629	+	* Read lock succeeds if write locked by current thread even if
630	+	* other threads are waiting for readlock
631	+	*/
632	+	public void testReadHoldingWriteLock2()      { testReadHoldingWriteLock2(false); }
633	+	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
634	+	public void testReadHoldingWriteLock2(boolean fair) {
635	+	final PublicReentrantReadWriteLock lock =
636	+	new PublicReentrantReadWriteLock(fair);
637	+	lock.writeLock().lock();
638	+	lock.readLock().lock();
639	+	lock.readLock().unlock();
640	+
641	+	Thread t1 = newStartedThread(new CheckedRunnable() {
642	+	public void realRun() {
643	+	lock.readLock().lock();
644	+	lock.readLock().unlock();
645	+	}});
646	+	Thread t2 = newStartedThread(new CheckedRunnable() {
647	+	public void realRun() {
648	+	lock.readLock().lock();
649	+	lock.readLock().unlock();
650	+	}});
651	+
652	+	waitForQueuedThread(lock, t1);
653	+	waitForQueuedThread(lock, t2);
654	+	assertWriteLockedByMoi(lock);
655	+	lock.readLock().lock();
656	+	lock.readLock().unlock();
657	+	releaseWriteLock(lock);
658	+	awaitTermination(t1);
659	+	awaitTermination(t2);
660	+	}
661	+
662	+	/**
663	+	* Read lock succeeds if write locked by current thread even if
664	+	* other threads are waiting for writelock
665	+	*/
666	+	public void testReadHoldingWriteLock3()      { testReadHoldingWriteLock3(false); }
667	+	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
668	+	public void testReadHoldingWriteLock3(boolean fair) {
669	+	final PublicReentrantReadWriteLock lock =
670	+	new PublicReentrantReadWriteLock(fair);
671	+	lock.writeLock().lock();
672	+	lock.readLock().lock();
673	+	lock.readLock().unlock();
674	+
675	+	Thread t1 = newStartedThread(new CheckedRunnable() {
676	+	public void realRun() {
677	+	lock.writeLock().lock();
678	+	lock.writeLock().unlock();
679	+	}});
680	+	Thread t2 = newStartedThread(new CheckedRunnable() {
681	+	public void realRun() {
682	+	lock.writeLock().lock();
683	+	lock.writeLock().unlock();
684	+	}});
685	+
686	+	waitForQueuedThread(lock, t1);
687	+	waitForQueuedThread(lock, t2);
688	+	assertWriteLockedByMoi(lock);
689	+	lock.readLock().lock();
690	+	lock.readLock().unlock();
691	+	assertWriteLockedByMoi(lock);
692	+	lock.writeLock().unlock();
693	+	awaitTermination(t1);
694	+	awaitTermination(t2);
695	+	}
696	+
697	+	/**
698	+	* Write lock succeeds if write locked by current thread even if
699	+	* other threads are waiting for writelock
700	+	*/
701	+	public void testWriteHoldingWriteLock4()      { testWriteHoldingWriteLock4(false); }
702	+	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
703	+	public void testWriteHoldingWriteLock4(boolean fair) {
704	+	final PublicReentrantReadWriteLock lock =
705	+	new PublicReentrantReadWriteLock(fair);
706	+	lock.writeLock().lock();
707	+	lock.writeLock().lock();
708	+	lock.writeLock().unlock();
709	+
710	+	Thread t1 = newStartedThread(new CheckedRunnable() {
711	+	public void realRun() {
712	+	lock.writeLock().lock();
713	+	lock.writeLock().unlock();
714	+	}});
715	+	Thread t2 = newStartedThread(new CheckedRunnable() {
716	+	public void realRun() {
717	+	lock.writeLock().lock();
718	+	lock.writeLock().unlock();
719	+	}});
720	+
721	+	waitForQueuedThread(lock, t1);
722	+	waitForQueuedThread(lock, t2);
723	+	assertWriteLockedByMoi(lock);
724	+	assertEquals(1, lock.getWriteHoldCount());
725	+	lock.writeLock().lock();
726	+	assertWriteLockedByMoi(lock);
727	+	assertEquals(2, lock.getWriteHoldCount());
728	+	lock.writeLock().unlock();
729	+	assertWriteLockedByMoi(lock);
730	+	assertEquals(1, lock.getWriteHoldCount());
731	+	lock.writeLock().unlock();
732	+	awaitTermination(t1);
733	+	awaitTermination(t2);
734	+	}
735
736		/**
737		* Read tryLock succeeds if readlocked but not writelocked
738		*/
739	<	public void testTryLockWhenReadLocked() {
740	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
741	<	lock.readLock().lock();
742	<	Thread t = new Thread(new Runnable() {
743	<	public void run() {
744	<	threadAssertTrue(lock.readLock().tryLock());
745	<	lock.readLock().unlock();
746	<	}
747	<	});
748	<	try {
393	<	t.start();
394	<	t.join();
395	<	lock.readLock().unlock();
396	<	} catch(Exception e){
397	<	unexpectedException();
398	<	}
399	<	}
739	>	public void testTryLockWhenReadLocked()      { testTryLockWhenReadLocked(false); }
740	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
741	>	public void testTryLockWhenReadLocked(boolean fair) {
742	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
743	>	lock.readLock().lock();
744	>	Thread t = newStartedThread(new CheckedRunnable() {
745	>	public void realRun() {
746	>	assertTrue(lock.readLock().tryLock());
747	>	lock.readLock().unlock();
748	>	}});
749
750	<
750	>	awaitTermination(t);
751	>	lock.readLock().unlock();
752	>	}
753
754		/**
755		* write tryLock fails when readlocked
756		*/
757	<	public void testWriteTryLockWhenReadLocked() {
758	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
759	<	lock.readLock().lock();
760	<	Thread t = new Thread(new Runnable() {
761	<	public void run() {
762	<	threadAssertFalse(lock.writeLock().tryLock());
763	<	}
764	<	});
765	<	try {
415	<	t.start();
416	<	t.join();
417	<	lock.readLock().unlock();
418	<	} catch(Exception e){
419	<	unexpectedException();
420	<	}
421	<	}
757	>	public void testWriteTryLockWhenReadLocked()      { testWriteTryLockWhenReadLocked(false); }
758	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
759	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
760	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
761	>	lock.readLock().lock();
762	>	Thread t = newStartedThread(new CheckedRunnable() {
763	>	public void realRun() {
764	>	assertFalse(lock.writeLock().tryLock());
765	>	}});
766
767	<
767	>	awaitTermination(t);
768	>	lock.readLock().unlock();
769	>	}
770
771		/**
772		* write timed tryLock times out if locked
773		*/
774	<	public void testWriteTryLock_Timeout() {
775	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
776	<	lock.writeLock().lock();
777	<	Thread t = new Thread(new Runnable() {
778	<	public void run() {
779	<	try {
780	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
781	<	} catch (Exception ex) {
782	<	threadUnexpectedException();
783	<	}
784	<	}
785	<	});
786	<	try {
787	<	t.start();
788	<	t.join();
789	<	lock.writeLock().unlock();
790	<	} catch(Exception e){
445	<	unexpectedException();
446	<	}
447	<	}
774	>	public void testWriteTryLock_Timeout()      { testWriteTryLock_Timeout(false); }
775	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
776	>	public void testWriteTryLock_Timeout(boolean fair) {
777	>	final PublicReentrantReadWriteLock lock =
778	>	new PublicReentrantReadWriteLock(fair);
779	>	lock.writeLock().lock();
780	>	Thread t = newStartedThread(new CheckedRunnable() {
781	>	public void realRun() throws InterruptedException {
782	>	long startTime = System.nanoTime();
783	>	long timeoutMillis = 10;
784	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
785	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
786	>	}});
787	>
788	>	awaitTermination(t);
789	>	releaseWriteLock(lock);
790	>	}
791
792		/**
793		* read timed tryLock times out if write-locked
794		*/
795	<	public void testReadTryLock_Timeout() {
796	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
797	<	lock.writeLock().lock();
798	<	Thread t = new Thread(new Runnable() {
799	<	public void run() {
800	<	try {
801	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
802	<	} catch (Exception ex) {
803	<	threadUnexpectedException();
804	<	}
805	<	}
806	<	});
807	<	try {
808	<	t.start();
809	<	t.join();
810	<	lock.writeLock().unlock();
811	<	} catch(Exception e){
469	<	unexpectedException();
470	<	}
471	<	}
472	<
795	>	public void testReadTryLock_Timeout()      { testReadTryLock_Timeout(false); }
796	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
797	>	public void testReadTryLock_Timeout(boolean fair) {
798	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
799	>	lock.writeLock().lock();
800	>	Thread t = newStartedThread(new CheckedRunnable() {
801	>	public void realRun() throws InterruptedException {
802	>	long startTime = System.nanoTime();
803	>	long timeoutMillis = 10;
804	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
805	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
806	>	}});
807	>
808	>	awaitTermination(t);
809	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
810	>	lock.writeLock().unlock();
811	>	}
812
813		/**
814	<	* write lockInterruptibly succeeds if lock free else is interruptible
815	<	*/
816	<	public void testWriteLockInterruptibly() {
817	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
818	<	try {
819	<	lock.writeLock().lockInterruptibly();
820	<	} catch(Exception e) {
482	<	unexpectedException();
483	<	}
484	<	Thread t = new Thread(new Runnable() {
485	<	public void run() {
486	<	try {
487	<	lock.writeLock().lockInterruptibly();
488	<	threadShouldThrow();
489	<	}
490	<	catch(InterruptedException success) {
491	<	}
492	<	}
493	<	});
814	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
815	>	*/
816	>	public void testWriteLockInterruptibly()      { testWriteLockInterruptibly(false); }
817	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
818	>	public void testWriteLockInterruptibly(boolean fair) {
819	>	final PublicReentrantReadWriteLock lock =
820	>	new PublicReentrantReadWriteLock(fair);
821		try {
822	<	t.start();
823	<	t.interrupt();
824	<	t.join();
498	<	lock.writeLock().unlock();
499	<	} catch(Exception e){
500	<	unexpectedException();
822	>	lock.writeLock().lockInterruptibly();
823	>	} catch (InterruptedException ie) {
824	>	threadUnexpectedException(ie);
825		}
826	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
827	+	public void realRun() throws InterruptedException {
828	+	lock.writeLock().lockInterruptibly();
829	+	}});
830	+
831	+	waitForQueuedThread(lock, t);
832	+	t.interrupt();
833	+	assertTrue(lock.writeLock().isHeldByCurrentThread());
834	+	awaitTermination(t);
835	+	releaseWriteLock(lock);
836		}
837
838		/**
839	<	*  read lockInterruptibly succeeds if lock free else is interruptible
839	>	* read lockInterruptibly succeeds if lock free else is interruptible
840		*/
841	<	public void testReadLockInterruptibly() {
842	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
843	<	try {
844	<	lock.writeLock().lockInterruptibly();
845	<	} catch(Exception e) {
512	<	unexpectedException();
513	<	}
514	<	Thread t = new Thread(new Runnable() {
515	<	public void run() {
516	<	try {
517	<	lock.readLock().lockInterruptibly();
518	<	threadShouldThrow();
519	<	}
520	<	catch(InterruptedException success) {
521	<	}
522	<	}
523	<	});
841	>	public void testReadLockInterruptibly()      { testReadLockInterruptibly(false); }
842	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
843	>	public void testReadLockInterruptibly(boolean fair) {
844	>	final PublicReentrantReadWriteLock lock =
845	>	new PublicReentrantReadWriteLock(fair);
846		try {
847	<	t.start();
848	<	t.interrupt();
849	<	t.join();
850	<	lock.writeLock().unlock();
851	<	} catch(Exception e){
530	<	unexpectedException();
847	>	lock.readLock().lockInterruptibly();
848	>	lock.readLock().unlock();
849	>	lock.writeLock().lockInterruptibly();
850	>	} catch (InterruptedException ie) {
851	>	threadUnexpectedException(ie);
852		}
853	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
854	+	public void realRun() throws InterruptedException {
855	+	lock.readLock().lockInterruptibly();
856	+	}});
857	+
858	+	waitForQueuedThread(lock, t);
859	+	t.interrupt();
860	+	awaitTermination(t);
861	+	releaseWriteLock(lock);
862		}
863
864		/**
865		* Calling await without holding lock throws IllegalMonitorStateException
866		*/
867	<	public void testAwait_IllegalMonitor() {
868	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
867	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
868	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
869	>	public void testAwait_IMSE(boolean fair) {
870	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
871		final Condition c = lock.writeLock().newCondition();
872	<	try {
873	<	c.await();
874	<	shouldThrow();
875	<	}
876	<	catch (IllegalMonitorStateException success) {
877	<	}
878	<	catch (Exception ex) {
879	<	shouldThrow();
872	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
873	>	long startTime = System.nanoTime();
874	>	try {
875	>	await(c, awaitMethod);
876	>	shouldThrow();
877	>	} catch (IllegalMonitorStateException success) {
878	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
879	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
880		}
881		}
882
883		/**
884		* Calling signal without holding lock throws IllegalMonitorStateException
885		*/
886	<	public void testSignal_IllegalMonitor() {
887	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
886	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
887	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
888	>	public void testSignal_IMSE(boolean fair) {
889	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
890		final Condition c = lock.writeLock().newCondition();
891		try {
892		c.signal();
893		shouldThrow();
894	<	}
561	<	catch (IllegalMonitorStateException success) {
562	<	}
563	<	catch (Exception ex) {
564	<	unexpectedException();
565	<	}
894	>	} catch (IllegalMonitorStateException success) {}
895		}
896
897		/**
898	<	* awaitNanos without a signal times out
898	>	* Calling signalAll without holding lock throws IllegalMonitorStateException
899		*/
900	<	public void testAwaitNanos_Timeout() {
901	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
900	>	public void testSignalAll_IMSE()      { testSignalAll_IMSE(false); }
901	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
902	>	public void testSignalAll_IMSE(boolean fair) {
903	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
904		final Condition c = lock.writeLock().newCondition();
905		try {
906	+	c.signalAll();
907	+	shouldThrow();
908	+	} catch (IllegalMonitorStateException success) {}
909	+	}
910	+
911	+	/**
912	+	* awaitNanos without a signal times out
913	+	*/
914	+	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
915	+	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
916	+	public void testAwaitNanos_Timeout(boolean fair) {
917	+	try {
918	+	final ReentrantReadWriteLock lock =
919	+	new ReentrantReadWriteLock(fair);
920	+	final Condition c = lock.writeLock().newCondition();
921		lock.writeLock().lock();
922	<	long t = c.awaitNanos(100);
923	<	assertTrue(t <= 0);
922	>	long startTime = System.nanoTime();
923	>	long timeoutMillis = 10;
924	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
925	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
926	>	assertTrue(nanosRemaining <= 0);
927	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
928		lock.writeLock().unlock();
929	<	}
930	<	catch (Exception ex) {
581	<	unexpectedException();
929	>	} catch (InterruptedException e) {
930	>	threadUnexpectedException(e);
931		}
932		}
933
585	–
934		/**
935	<	*  timed await without a signal times out
935	>	* timed await without a signal times out
936		*/
937	<	public void testAwait_Timeout() {
938	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
939	<	final Condition c = lock.writeLock().newCondition();
937	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
938	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
939	>	public void testAwait_Timeout(boolean fair) {
940		try {
941	+	final ReentrantReadWriteLock lock =
942	+	new ReentrantReadWriteLock(fair);
943	+	final Condition c = lock.writeLock().newCondition();
944		lock.writeLock().lock();
945	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
945	>	long startTime = System.nanoTime();
946	>	long timeoutMillis = 10;
947	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
948	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
949		lock.writeLock().unlock();
950	<	}
951	<	catch (Exception ex) {
598	<	unexpectedException();
950	>	} catch (InterruptedException e) {
951	>	threadUnexpectedException(e);
952		}
953		}
954
955		/**
956		* awaitUntil without a signal times out
957		*/
958	<	public void testAwaitUntil_Timeout() {
959	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
960	<	final Condition c = lock.writeLock().newCondition();
961	<	try {
958	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
959	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
960	>	public void testAwaitUntil_Timeout(boolean fair) {
961	>	try {
962	>	final ReentrantReadWriteLock lock =
963	>	new ReentrantReadWriteLock(fair);
964	>	final Condition c = lock.writeLock().newCondition();
965		lock.writeLock().lock();
966	+	long startTime = System.nanoTime();
967	+	long timeoutMillis = 10;
968		java.util.Date d = new java.util.Date();
969	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
969	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
970	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
971		lock.writeLock().unlock();
972	<	}
973	<	catch (Exception ex) {
615	<	unexpectedException();
972	>	} catch (InterruptedException e) {
973	>	threadUnexpectedException(e);
974		}
975		}
976
977		/**
978		* await returns when signalled
979		*/
980	<	public void testAwait() {
981	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
980	>	public void testAwait()      { testAwait(false); }
981	>	public void testAwait_fair() { testAwait(true); }
982	>	public void testAwait(boolean fair) {
983	>	final PublicReentrantReadWriteLock lock =
984	>	new PublicReentrantReadWriteLock(fair);
985		final Condition c = lock.writeLock().newCondition();
986	<	Thread t = new Thread(new Runnable() {
987	<	public void run() {
988	<	try {
989	<	lock.writeLock().lock();
990	<	c.await();
991	<	lock.writeLock().unlock();
992	<	}
993	<	catch(InterruptedException e) {
994	<	threadUnexpectedException();
995	<	}
996	<	}
997	<	});
998	<
999	<	try {
1000	<	t.start();
1001	<	Thread.sleep(SHORT_DELAY_MS);
1002	<	lock.writeLock().lock();
642	<	c.signal();
643	<	lock.writeLock().unlock();
644	<	t.join(SHORT_DELAY_MS);
645	<	assertFalse(t.isAlive());
646	<	}
647	<	catch (Exception ex) {
648	<	unexpectedException();
649	<	}
986	>	final CountDownLatch locked = new CountDownLatch(1);
987	>	Thread t = newStartedThread(new CheckedRunnable() {
988	>	public void realRun() throws InterruptedException {
989	>	lock.writeLock().lock();
990	>	locked.countDown();
991	>	c.await();
992	>	lock.writeLock().unlock();
993	>	}});
994	>
995	>	await(locked);
996	>	lock.writeLock().lock();
997	>	assertHasWaiters(lock, c, t);
998	>	c.signal();
999	>	assertHasNoWaiters(lock, c);
1000	>	assertTrue(t.isAlive());
1001	>	lock.writeLock().unlock();
1002	>	awaitTermination(t);
1003		}
1004
1005		/**
1006		* awaitUninterruptibly doesn't abort on interrupt
1007		*/
1008	<	public void testAwaitUninterruptibly() {
1009	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1008	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
1009	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
1010	>	public void testAwaitUninterruptibly(boolean fair) {
1011	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1012		final Condition c = lock.writeLock().newCondition();
1013	<	Thread t = new Thread(new Runnable() {
1014	<	public void run() {
1015	<	lock.writeLock().lock();
1016	<	c.awaitUninterruptibly();
1017	<	lock.writeLock().unlock();
1018	<	}
1019	<	});
1020	<
1021	<	try {
1022	<	t.start();
1023	<	Thread.sleep(SHORT_DELAY_MS);
1024	<	t.interrupt();
1025	<	lock.writeLock().lock();
1026	<	c.signal();
1027	<	lock.writeLock().unlock();
1028	<	assert(t.isInterrupted());
1029	<	t.join(SHORT_DELAY_MS);
1030	<	assertFalse(t.isAlive());
1031	<	}
1032	<	catch (Exception ex) {
678	<	unexpectedException();
679	<	}
1013	>	final CountDownLatch locked = new CountDownLatch(1);
1014	>	Thread t = newStartedThread(new CheckedRunnable() {
1015	>	public void realRun() {
1016	>	lock.writeLock().lock();
1017	>	locked.countDown();
1018	>	c.awaitUninterruptibly();
1019	>	assertTrue(Thread.interrupted());
1020	>	lock.writeLock().unlock();
1021	>	}});
1022	>
1023	>	await(locked);
1024	>	lock.writeLock().lock();
1025	>	lock.writeLock().unlock();
1026	>	t.interrupt();
1027	>	long timeoutMillis = 10;
1028	>	assertThreadStaysAlive(t, timeoutMillis);
1029	>	lock.writeLock().lock();
1030	>	c.signal();
1031	>	lock.writeLock().unlock();
1032	>	awaitTermination(t);
1033		}
1034
1035		/**
1036	<	* await is interruptible
1037	<	*/
1038	<	public void testAwait_Interrupt() {
1039	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1036	>	* await/awaitNanos/awaitUntil is interruptible
1037	>	*/
1038	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
1039	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
1040	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
1041	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
1042	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
1043	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
1044	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
1045	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
1046	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
1047	>	final PublicReentrantReadWriteLock lock =
1048	>	new PublicReentrantReadWriteLock(fair);
1049		final Condition c = lock.writeLock().newCondition();
1050	<	Thread t = new Thread(new Runnable() {
1051	<	public void run() {
1052	<	try {
1053	<	lock.writeLock().lock();
1054	<	c.await();
1055	<	lock.writeLock().unlock();
1056	<	threadShouldThrow();
1057	<	}
1058	<	catch(InterruptedException success) {
1059	<	}
1060	<	}
1061	<	});
1062	<
1063	<	try {
1064	<	t.start();
1065	<	Thread.sleep(SHORT_DELAY_MS);
1066	<	t.interrupt();
1067	<	t.join(SHORT_DELAY_MS);
1068	<	assertFalse(t.isAlive());
1069	<	}
1070	<	catch (Exception ex) {
1071	<	unexpectedException();
710	<	}
1050	>	final CountDownLatch locked = new CountDownLatch(1);
1051	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1052	>	public void realRun() throws InterruptedException {
1053	>	lock.writeLock().lock();
1054	>	assertWriteLockedByMoi(lock);
1055	>	assertHasNoWaiters(lock, c);
1056	>	locked.countDown();
1057	>	try {
1058	>	await(c, awaitMethod);
1059	>	} finally {
1060	>	assertWriteLockedByMoi(lock);
1061	>	assertHasNoWaiters(lock, c);
1062	>	lock.writeLock().unlock();
1063	>	assertFalse(Thread.interrupted());
1064	>	}
1065	>	}});
1066	>
1067	>	await(locked);
1068	>	assertHasWaiters(lock, c, t);
1069	>	t.interrupt();
1070	>	awaitTermination(t);
1071	>	assertNotWriteLocked(lock);
1072		}
1073
1074		/**
1075	<	* awaitNanos is interruptible
1075	>	* signalAll wakes up all threads
1076		*/
1077	<	public void testAwaitNanos_Interrupt() {
1078	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1077	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
1078	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
1079	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
1080	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
1081	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
1082	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
1083	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
1084	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
1085	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
1086	>	final PublicReentrantReadWriteLock lock =
1087	>	new PublicReentrantReadWriteLock(fair);
1088		final Condition c = lock.writeLock().newCondition();
1089	<	Thread t = new Thread(new Runnable() {
1090	<	public void run() {
1091	<	try {
1092	<	lock.writeLock().lock();
1093	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
1094	<	lock.writeLock().unlock();
1095	<	threadShouldThrow();
1096	<	}
1097	<	catch(InterruptedException success) {
1098	<	}
1099	<	}
1100	<	});
1101	<
1102	<	try {
1103	<	t.start();
1104	<	Thread.sleep(SHORT_DELAY_MS);
1105	<	t.interrupt();
1106	<	t.join(SHORT_DELAY_MS);
1107	<	assertFalse(t.isAlive());
1108	<	}
1109	<	catch (Exception ex) {
1110	<	unexpectedException();
741	<	}
1089	>	final CountDownLatch locked = new CountDownLatch(2);
1090	>	final Lock writeLock = lock.writeLock();
1091	>	class Awaiter extends CheckedRunnable {
1092	>	public void realRun() throws InterruptedException {
1093	>	writeLock.lock();
1094	>	locked.countDown();
1095	>	await(c, awaitMethod);
1096	>	writeLock.unlock();
1097	>	}
1098	>	}
1099	>
1100	>	Thread t1 = newStartedThread(new Awaiter());
1101	>	Thread t2 = newStartedThread(new Awaiter());
1102	>
1103	>	await(locked);
1104	>	writeLock.lock();
1105	>	assertHasWaiters(lock, c, t1, t2);
1106	>	c.signalAll();
1107	>	assertHasNoWaiters(lock, c);
1108	>	writeLock.unlock();
1109	>	awaitTermination(t1);
1110	>	awaitTermination(t2);
1111		}
1112
1113		/**
1114	<	* awaitUntil is interruptible
1115	<	*/
1116	<	public void testAwaitUntil_Interrupt() {
1117	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1114	>	* signal wakes up waiting threads in FIFO order.
1115	>	*/
1116	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1117	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1118	>	public void testSignalWakesFifo(boolean fair) {
1119	>	final PublicReentrantReadWriteLock lock =
1120	>	new PublicReentrantReadWriteLock(fair);
1121		final Condition c = lock.writeLock().newCondition();
1122	<	Thread t = new Thread(new Runnable() {
1123	<	public void run() {
1124	<	try {
1125	<	lock.writeLock().lock();
1126	<	java.util.Date d = new java.util.Date();
1127	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1128	<	lock.writeLock().unlock();
1129	<	threadShouldThrow();
1130	<	}
1131	<	catch(InterruptedException success) {
1132	<	}
1133	<	}
1134	<	});
1135	<
1136	<	try {
1137	<	t.start();
1138	<	Thread.sleep(SHORT_DELAY_MS);
1139	<	t.interrupt();
1140	<	t.join(SHORT_DELAY_MS);
1141	<	assertFalse(t.isAlive());
1142	<	}
1143	<	catch (Exception ex) {
1144	<	unexpectedException();
1145	<	}
1122	>	final CountDownLatch locked1 = new CountDownLatch(1);
1123	>	final CountDownLatch locked2 = new CountDownLatch(1);
1124	>	final Lock writeLock = lock.writeLock();
1125	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1126	>	public void realRun() throws InterruptedException {
1127	>	writeLock.lock();
1128	>	locked1.countDown();
1129	>	c.await();
1130	>	writeLock.unlock();
1131	>	}});
1132	>
1133	>	await(locked1);
1134	>
1135	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1136	>	public void realRun() throws InterruptedException {
1137	>	writeLock.lock();
1138	>	locked2.countDown();
1139	>	c.await();
1140	>	writeLock.unlock();
1141	>	}});
1142	>
1143	>	await(locked2);
1144	>
1145	>	writeLock.lock();
1146	>	assertHasWaiters(lock, c, t1, t2);
1147	>	assertFalse(lock.hasQueuedThreads());
1148	>	c.signal();
1149	>	assertHasWaiters(lock, c, t2);
1150	>	assertTrue(lock.hasQueuedThread(t1));
1151	>	assertFalse(lock.hasQueuedThread(t2));
1152	>	c.signal();
1153	>	assertHasNoWaiters(lock, c);
1154	>	assertTrue(lock.hasQueuedThread(t1));
1155	>	assertTrue(lock.hasQueuedThread(t2));
1156	>	writeLock.unlock();
1157	>	awaitTermination(t1);
1158	>	awaitTermination(t2);
1159		}
1160
1161		/**
1162	<	* signalAll wakes up all threads
1163	<	*/
1164	<	public void testSignalAll() {
1165	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1162	>	* await after multiple reentrant locking preserves lock count
1163	>	*/
1164	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1165	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1166	>	public void testAwaitLockCount(boolean fair) {
1167	>	final PublicReentrantReadWriteLock lock =
1168	>	new PublicReentrantReadWriteLock(fair);
1169		final Condition c = lock.writeLock().newCondition();
1170	<	Thread t1 = 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	<	});
1182	<
1183	<	Thread t2 = new Thread(new Runnable() {
1184	<	public void run() {
1185	<	try {
1186	<	lock.writeLock().lock();
1187	<	c.await();
1188	<	lock.writeLock().unlock();
1189	<	}
1190	<	catch(InterruptedException e) {
1191	<	threadUnexpectedException();
1192	<	}
1193	<	}
1194	<	});
1195	<
1196	<	try {
1197	<	t1.start();
1198	<	t2.start();
1199	<	Thread.sleep(SHORT_DELAY_MS);
1200	<	lock.writeLock().lock();
1201	<	c.signalAll();
1202	<	lock.writeLock().unlock();
1203	<	t1.join(SHORT_DELAY_MS);
1204	<	t2.join(SHORT_DELAY_MS);
817	<	assertFalse(t1.isAlive());
818	<	assertFalse(t2.isAlive());
819	<	}
820	<	catch (Exception ex) {
821	<	unexpectedException();
822	<	}
1170	>	final CountDownLatch locked = new CountDownLatch(2);
1171	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1172	>	public void realRun() throws InterruptedException {
1173	>	lock.writeLock().lock();
1174	>	assertWriteLockedByMoi(lock);
1175	>	assertEquals(1, lock.writeLock().getHoldCount());
1176	>	locked.countDown();
1177	>	c.await();
1178	>	assertWriteLockedByMoi(lock);
1179	>	assertEquals(1, lock.writeLock().getHoldCount());
1180	>	lock.writeLock().unlock();
1181	>	}});
1182	>
1183	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1184	>	public void realRun() throws InterruptedException {
1185	>	lock.writeLock().lock();
1186	>	lock.writeLock().lock();
1187	>	assertWriteLockedByMoi(lock);
1188	>	assertEquals(2, lock.writeLock().getHoldCount());
1189	>	locked.countDown();
1190	>	c.await();
1191	>	assertWriteLockedByMoi(lock);
1192	>	assertEquals(2, lock.writeLock().getHoldCount());
1193	>	lock.writeLock().unlock();
1194	>	lock.writeLock().unlock();
1195	>	}});
1196	>
1197	>	await(locked);
1198	>	lock.writeLock().lock();
1199	>	assertHasWaiters(lock, c, t1, t2);
1200	>	c.signalAll();
1201	>	assertHasNoWaiters(lock, c);
1202	>	lock.writeLock().unlock();
1203	>	awaitTermination(t1);
1204	>	awaitTermination(t2);
1205		}
1206
1207		/**
1208		* A serialized lock deserializes as unlocked
1209		*/
1210	<	public void testSerialization() {
1211	<	ReentrantReadWriteLock l = new ReentrantReadWriteLock();
1212	<	l.readLock().lock();
1213	<	l.readLock().unlock();
1214	<
1215	<	try {
1216	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1217	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1218	<	out.writeObject(l);
1219	<	out.close();
1220	<
1221	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1222	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1223	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1224	<	r.readLock().lock();
1225	<	r.readLock().unlock();
1226	<	} catch(Exception e){
1227	<	e.printStackTrace();
1228	<	unexpectedException();
1229	<	}
1210	>	public void testSerialization()      { testSerialization(false); }
1211	>	public void testSerialization_fair() { testSerialization(true); }
1212	>	public void testSerialization(boolean fair) {
1213	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1214	>	lock.writeLock().lock();
1215	>	lock.readLock().lock();
1216	>
1217	>	ReentrantReadWriteLock clone = serialClone(lock);
1218	>	assertEquals(lock.isFair(), clone.isFair());
1219	>	assertTrue(lock.isWriteLocked());
1220	>	assertFalse(clone.isWriteLocked());
1221	>	assertEquals(1, lock.getReadLockCount());
1222	>	assertEquals(0, clone.getReadLockCount());
1223	>	clone.writeLock().lock();
1224	>	clone.readLock().lock();
1225	>	assertTrue(clone.isWriteLocked());
1226	>	assertEquals(1, clone.getReadLockCount());
1227	>	clone.readLock().unlock();
1228	>	clone.writeLock().unlock();
1229	>	assertFalse(clone.isWriteLocked());
1230	>	assertEquals(1, lock.getReadLockCount());
1231	>	assertEquals(0, clone.getReadLockCount());
1232		}
1233
1234		/**
1235		* hasQueuedThreads reports whether there are waiting threads
1236		*/
1237	<	public void testhasQueuedThreads() {
1238	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1237	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
1238	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
1239	>	public void testHasQueuedThreads(boolean fair) {
1240	>	final PublicReentrantReadWriteLock lock =
1241	>	new PublicReentrantReadWriteLock(fair);
1242		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1243		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1244	+	assertFalse(lock.hasQueuedThreads());
1245	+	lock.writeLock().lock();
1246	+	assertFalse(lock.hasQueuedThreads());
1247	+	t1.start();
1248	+	waitForQueuedThread(lock, t1);
1249	+	assertTrue(lock.hasQueuedThreads());
1250	+	t2.start();
1251	+	waitForQueuedThread(lock, t2);
1252	+	assertTrue(lock.hasQueuedThreads());
1253	+	t1.interrupt();
1254	+	awaitTermination(t1);
1255	+	assertTrue(lock.hasQueuedThreads());
1256	+	lock.writeLock().unlock();
1257	+	awaitTermination(t2);
1258	+	assertFalse(lock.hasQueuedThreads());
1259	+	}
1260	+
1261	+	/**
1262	+	* hasQueuedThread(null) throws NPE
1263	+	*/
1264	+	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
1265	+	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
1266	+	public void testHasQueuedThreadNPE(boolean fair) {
1267	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1268		try {
1269	<	assertFalse(lock.hasQueuedThreads());
1270	<	lock.writeLock().lock();
1271	<	t1.start();
1272	<	Thread.sleep(SHORT_DELAY_MS);
1273	<	assertTrue(lock.hasQueuedThreads());
1274	<	t2.start();
1275	<	Thread.sleep(SHORT_DELAY_MS);
1276	<	assertTrue(lock.hasQueuedThreads());
1277	<	t1.interrupt();
1278	<	Thread.sleep(SHORT_DELAY_MS);
1279	<	assertTrue(lock.hasQueuedThreads());
1280	<	lock.writeLock().unlock();
1281	<	Thread.sleep(SHORT_DELAY_MS);
1282	<	assertFalse(lock.hasQueuedThreads());
1283	<	t1.join();
1284	<	t2.join();
1285	<	} catch(Exception e){
1286	<	unexpectedException();
1287	<	}
1288	<	}
1269	>	lock.hasQueuedThread(null);
1270	>	shouldThrow();
1271	>	} catch (NullPointerException success) {}
1272	>	}
1273	>
1274	>	/**
1275	>	* hasQueuedThread reports whether a thread is queued.
1276	>	*/
1277	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
1278	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
1279	>	public void testHasQueuedThread(boolean fair) {
1280	>	final PublicReentrantReadWriteLock lock =
1281	>	new PublicReentrantReadWriteLock(fair);
1282	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1283	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1284	>	assertFalse(lock.hasQueuedThread(t1));
1285	>	assertFalse(lock.hasQueuedThread(t2));
1286	>	lock.writeLock().lock();
1287	>	t1.start();
1288	>	waitForQueuedThread(lock, t1);
1289	>	assertTrue(lock.hasQueuedThread(t1));
1290	>	assertFalse(lock.hasQueuedThread(t2));
1291	>	t2.start();
1292	>	waitForQueuedThread(lock, t2);
1293	>	assertTrue(lock.hasQueuedThread(t1));
1294	>	assertTrue(lock.hasQueuedThread(t2));
1295	>	t1.interrupt();
1296	>	awaitTermination(t1);
1297	>	assertFalse(lock.hasQueuedThread(t1));
1298	>	assertTrue(lock.hasQueuedThread(t2));
1299	>	lock.writeLock().unlock();
1300	>	awaitTermination(t2);
1301	>	assertFalse(lock.hasQueuedThread(t1));
1302	>	assertFalse(lock.hasQueuedThread(t2));
1303	>	}
1304
1305		/**
1306		* getQueueLength reports number of waiting threads
1307		*/
1308	<	public void testGetQueueLength() {
1309	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1308	>	public void testGetQueueLength()      { testGetQueueLength(false); }
1309	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
1310	>	public void testGetQueueLength(boolean fair) {
1311	>	final PublicReentrantReadWriteLock lock =
1312	>	new PublicReentrantReadWriteLock(fair);
1313		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1314		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1315	<	try {
1316	<	assertEquals(0, lock.getQueueLength());
1317	<	lock.writeLock().lock();
1318	<	t1.start();
1319	<	Thread.sleep(SHORT_DELAY_MS);
1320	<	assertEquals(1, lock.getQueueLength());
1321	<	t2.start();
1322	<	Thread.sleep(SHORT_DELAY_MS);
1323	<	assertEquals(2, lock.getQueueLength());
1324	<	t1.interrupt();
1325	<	Thread.sleep(SHORT_DELAY_MS);
1326	<	assertEquals(1, lock.getQueueLength());
1327	<	lock.writeLock().unlock();
1328	<	Thread.sleep(SHORT_DELAY_MS);
1329	<	assertEquals(0, lock.getQueueLength());
901	<	t1.join();
902	<	t2.join();
903	<	} catch(Exception e){
904	<	unexpectedException();
905	<	}
906	<	}
1315	>	assertEquals(0, lock.getQueueLength());
1316	>	lock.writeLock().lock();
1317	>	t1.start();
1318	>	waitForQueuedThread(lock, t1);
1319	>	assertEquals(1, lock.getQueueLength());
1320	>	t2.start();
1321	>	waitForQueuedThread(lock, t2);
1322	>	assertEquals(2, lock.getQueueLength());
1323	>	t1.interrupt();
1324	>	awaitTermination(t1);
1325	>	assertEquals(1, lock.getQueueLength());
1326	>	lock.writeLock().unlock();
1327	>	awaitTermination(t2);
1328	>	assertEquals(0, lock.getQueueLength());
1329	>	}
1330
1331		/**
1332		* getQueuedThreads includes waiting threads
1333		*/
1334	<	public void testGetQueuedThreads() {
1335	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1334	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
1335	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
1336	>	public void testGetQueuedThreads(boolean fair) {
1337	>	final PublicReentrantReadWriteLock lock =
1338	>	new PublicReentrantReadWriteLock(fair);
1339		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1340		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1341	<	try {
1342	<	assertTrue(lock.getQueuedThreads().isEmpty());
1343	<	lock.writeLock().lock();
1344	<	assertTrue(lock.getQueuedThreads().isEmpty());
1345	<	t1.start();
1346	<	Thread.sleep(SHORT_DELAY_MS);
1347	<	assertTrue(lock.getQueuedThreads().contains(t1));
1348	<	t2.start();
1349	<	Thread.sleep(SHORT_DELAY_MS);
1350	<	assertTrue(lock.getQueuedThreads().contains(t1));
1351	<	assertTrue(lock.getQueuedThreads().contains(t2));
1352	<	t1.interrupt();
1353	<	Thread.sleep(SHORT_DELAY_MS);
1354	<	assertFalse(lock.getQueuedThreads().contains(t1));
1355	<	assertTrue(lock.getQueuedThreads().contains(t2));
1356	<	lock.writeLock().unlock();
1357	<	Thread.sleep(SHORT_DELAY_MS);
1358	<	assertTrue(lock.getQueuedThreads().isEmpty());
1359	<	t1.join();
1360	<	t2.join();
1361	<	} catch(Exception e){
936	<	unexpectedException();
937	<	}
938	<	}
1341	>	assertTrue(lock.getQueuedThreads().isEmpty());
1342	>	lock.writeLock().lock();
1343	>	assertTrue(lock.getQueuedThreads().isEmpty());
1344	>	t1.start();
1345	>	waitForQueuedThread(lock, t1);
1346	>	assertEquals(1, lock.getQueuedThreads().size());
1347	>	assertTrue(lock.getQueuedThreads().contains(t1));
1348	>	t2.start();
1349	>	waitForQueuedThread(lock, t2);
1350	>	assertEquals(2, lock.getQueuedThreads().size());
1351	>	assertTrue(lock.getQueuedThreads().contains(t1));
1352	>	assertTrue(lock.getQueuedThreads().contains(t2));
1353	>	t1.interrupt();
1354	>	awaitTermination(t1);
1355	>	assertFalse(lock.getQueuedThreads().contains(t1));
1356	>	assertTrue(lock.getQueuedThreads().contains(t2));
1357	>	assertEquals(1, lock.getQueuedThreads().size());
1358	>	lock.writeLock().unlock();
1359	>	awaitTermination(t2);
1360	>	assertTrue(lock.getQueuedThreads().isEmpty());
1361	>	}
1362
1363		/**
1364		* hasWaiters throws NPE if null
1365		*/
1366	<	public void testHasWaitersNPE() {
1367	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1366	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
1367	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
1368	>	public void testHasWaitersNPE(boolean fair) {
1369	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1370		try {
1371		lock.hasWaiters(null);
1372		shouldThrow();
1373	<	} catch (NullPointerException success) {
949	<	} catch (Exception ex) {
950	<	unexpectedException();
951	<	}
1373	>	} catch (NullPointerException success) {}
1374		}
1375
1376		/**
1377		* getWaitQueueLength throws NPE if null
1378		*/
1379	<	public void testGetWaitQueueLengthNPE() {
1380	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1379	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
1380	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
1381	>	public void testGetWaitQueueLengthNPE(boolean fair) {
1382	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1383		try {
1384		lock.getWaitQueueLength(null);
1385		shouldThrow();
1386	<	} catch (NullPointerException success) {
963	<	} catch (Exception ex) {
964	<	unexpectedException();
965	<	}
1386	>	} catch (NullPointerException success) {}
1387		}
1388
968	–
1389		/**
1390		* getWaitingThreads throws NPE if null
1391		*/
1392	<	public void testGetWaitingThreadsNPE() {
1393	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1392	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
1393	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
1394	>	public void testGetWaitingThreadsNPE(boolean fair) {
1395	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair);
1396		try {
1397		lock.getWaitingThreads(null);
1398		shouldThrow();
1399	<	} catch (NullPointerException success) {
978	<	} catch (Exception ex) {
979	<	unexpectedException();
980	<	}
1399	>	} catch (NullPointerException success) {}
1400		}
1401
1402		/**
1403	<	* hasWaiters throws IAE if not owned
1403	>	* hasWaiters throws IllegalArgumentException if not owned
1404		*/
1405	<	public void testHasWaitersIAE() {
1406	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1407	<	final Condition c = (lock.writeLock().newCondition());
1408	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1405	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
1406	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
1407	>	public void testHasWaitersIAE(boolean fair) {
1408	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1409	>	final Condition c = lock.writeLock().newCondition();
1410	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1411		try {
1412		lock2.hasWaiters(c);
1413		shouldThrow();
1414	<	} catch (IllegalArgumentException success) {
994	<	} catch (Exception ex) {
995	<	unexpectedException();
996	<	}
1414	>	} catch (IllegalArgumentException success) {}
1415		}
1416
1417		/**
1418	<	* hasWaiters throws IMSE if not locked
1418	>	* hasWaiters throws IllegalMonitorStateException if not locked
1419		*/
1420	<	public void testHasWaitersIMSE() {
1421	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1422	<	final Condition c = (lock.writeLock().newCondition());
1420	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
1421	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
1422	>	public void testHasWaitersIMSE(boolean fair) {
1423	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1424	>	final Condition c = lock.writeLock().newCondition();
1425		try {
1426		lock.hasWaiters(c);
1427		shouldThrow();
1428	<	} catch (IllegalMonitorStateException success) {
1009	<	} catch (Exception ex) {
1010	<	unexpectedException();
1011	<	}
1428	>	} catch (IllegalMonitorStateException success) {}
1429		}
1430
1014	–
1431		/**
1432	<	* getWaitQueueLength throws IAE if not owned
1432	>	* getWaitQueueLength throws IllegalArgumentException if not owned
1433		*/
1434	<	public void testGetWaitQueueLengthIAE() {
1435	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1436	<	final Condition c = (lock.writeLock().newCondition());
1437	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1434	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
1435	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
1436	>	public void testGetWaitQueueLengthIAE(boolean fair) {
1437	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1438	>	final Condition c = lock.writeLock().newCondition();
1439	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1440		try {
1441		lock2.getWaitQueueLength(c);
1442		shouldThrow();
1443	<	} catch (IllegalArgumentException success) {
1026	<	} catch (Exception ex) {
1027	<	unexpectedException();
1028	<	}
1443	>	} catch (IllegalArgumentException success) {}
1444		}
1445
1446		/**
1447	<	* getWaitQueueLength throws IMSE if not locked
1447	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
1448		*/
1449	<	public void testGetWaitQueueLengthIMSE() {
1450	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1451	<	final Condition c = (lock.writeLock().newCondition());
1449	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
1450	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
1451	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
1452	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1453	>	final Condition c = lock.writeLock().newCondition();
1454		try {
1455		lock.getWaitQueueLength(c);
1456		shouldThrow();
1457	<	} catch (IllegalMonitorStateException success) {
1041	<	} catch (Exception ex) {
1042	<	unexpectedException();
1043	<	}
1457	>	} catch (IllegalMonitorStateException success) {}
1458		}
1459
1046	–
1460		/**
1461	<	* getWaitingThreads throws IAE if not owned
1461	>	* getWaitingThreads throws IllegalArgumentException if not owned
1462		*/
1463	<	public void testGetWaitingThreadsIAE() {
1464	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1465	<	final Condition c = (lock.writeLock().newCondition());
1466	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1463	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
1464	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
1465	>	public void testGetWaitingThreadsIAE(boolean fair) {
1466	>	final PublicReentrantReadWriteLock lock =
1467	>	new PublicReentrantReadWriteLock(fair);
1468	>	final Condition c = lock.writeLock().newCondition();
1469	>	final PublicReentrantReadWriteLock lock2 =
1470	>	new PublicReentrantReadWriteLock(fair);
1471		try {
1472		lock2.getWaitingThreads(c);
1473		shouldThrow();
1474	<	} catch (IllegalArgumentException success) {
1058	<	} catch (Exception ex) {
1059	<	unexpectedException();
1060	<	}
1474	>	} catch (IllegalArgumentException success) {}
1475		}
1476
1477		/**
1478	<	* getWaitingThreads throws IMSE if not locked
1478	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
1479		*/
1480	<	public void testGetWaitingThreadsIMSE() {
1481	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1482	<	final Condition c = (lock.writeLock().newCondition());
1480	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
1481	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
1482	>	public void testGetWaitingThreadsIMSE(boolean fair) {
1483	>	final PublicReentrantReadWriteLock lock =
1484	>	new PublicReentrantReadWriteLock(fair);
1485	>	final Condition c = lock.writeLock().newCondition();
1486		try {
1487		lock.getWaitingThreads(c);
1488		shouldThrow();
1489	<	} catch (IllegalMonitorStateException success) {
1073	<	} catch (Exception ex) {
1074	<	unexpectedException();
1075	<	}
1489	>	} catch (IllegalMonitorStateException success) {}
1490		}
1491
1078	–
1492		/**
1493		* hasWaiters returns true when a thread is waiting, else false
1494		*/
1495	<	public void testHasWaiters() {
1496	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1497	<	final Condition c = (lock.writeLock().newCondition());
1498	<	Thread t = new Thread(new Runnable() {
1499	<	public void run() {
1500	<	try {
1501	<	lock.writeLock().lock();
1502	<	threadAssertFalse(lock.hasWaiters(c));
1503	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1504	<	c.await();
1505	<	lock.writeLock().unlock();
1506	<	}
1507	<	catch(InterruptedException e) {
1508	<	threadUnexpectedException();
1509	<	}
1510	<	}
1511	<	});
1512	<
1513	<	try {
1514	<	t.start();
1515	<	Thread.sleep(SHORT_DELAY_MS);
1516	<	lock.writeLock().lock();
1517	<	assertTrue(lock.hasWaiters(c));
1518	<	assertEquals(1, lock.getWaitQueueLength(c));
1519	<	c.signal();
1520	<	lock.writeLock().unlock();
1521	<	Thread.sleep(SHORT_DELAY_MS);
1522	<	lock.writeLock().lock();
1523	<	assertFalse(lock.hasWaiters(c));
1111	<	assertEquals(0, lock.getWaitQueueLength(c));
1112	<	lock.writeLock().unlock();
1113	<	t.join(SHORT_DELAY_MS);
1114	<	assertFalse(t.isAlive());
1115	<	}
1116	<	catch (Exception ex) {
1117	<	unexpectedException();
1118	<	}
1495	>	public void testHasWaiters()      { testHasWaiters(false); }
1496	>	public void testHasWaiters_fair() { testHasWaiters(true); }
1497	>	public void testHasWaiters(boolean fair) {
1498	>	final PublicReentrantReadWriteLock lock =
1499	>	new PublicReentrantReadWriteLock(fair);
1500	>	final Condition c = lock.writeLock().newCondition();
1501	>	final CountDownLatch locked = new CountDownLatch(1);
1502	>	Thread t = newStartedThread(new CheckedRunnable() {
1503	>	public void realRun() throws InterruptedException {
1504	>	lock.writeLock().lock();
1505	>	assertHasNoWaiters(lock, c);
1506	>	assertFalse(lock.hasWaiters(c));
1507	>	locked.countDown();
1508	>	c.await();
1509	>	assertHasNoWaiters(lock, c);
1510	>	assertFalse(lock.hasWaiters(c));
1511	>	lock.writeLock().unlock();
1512	>	}});
1513	>
1514	>	await(locked);
1515	>	lock.writeLock().lock();
1516	>	assertHasWaiters(lock, c, t);
1517	>	assertTrue(lock.hasWaiters(c));
1518	>	c.signal();
1519	>	assertHasNoWaiters(lock, c);
1520	>	assertFalse(lock.hasWaiters(c));
1521	>	lock.writeLock().unlock();
1522	>	awaitTermination(t);
1523	>	assertHasNoWaiters(lock, c);
1524		}
1525
1526		/**
1527		* getWaitQueueLength returns number of waiting threads
1528		*/
1529	<	public void testGetWaitQueueLength() {
1530	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1531	<	final Condition c = (lock.writeLock().newCondition());
1532	<	Thread t = new Thread(new Runnable() {
1533	<	public void run() {
1534	<	try {
1535	<	lock.writeLock().lock();
1536	<	threadAssertFalse(lock.hasWaiters(c));
1537	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1538	<	c.await();
1539	<	lock.writeLock().unlock();
1540	<	}
1541	<	catch(InterruptedException e) {
1542	<	threadUnexpectedException();
1543	<	}
1544	<	}
1545	<	});
1546	<
1547	<	try {
1548	<	t.start();
1549	<	Thread.sleep(SHORT_DELAY_MS);
1550	<	lock.writeLock().lock();
1551	<	assertTrue(lock.hasWaiters(c));
1552	<	assertEquals(1, lock.getWaitQueueLength(c));
1553	<	c.signal();
1149	<	lock.writeLock().unlock();
1150	<	Thread.sleep(SHORT_DELAY_MS);
1151	<	lock.writeLock().lock();
1152	<	assertFalse(lock.hasWaiters(c));
1153	<	assertEquals(0, lock.getWaitQueueLength(c));
1154	<	lock.writeLock().unlock();
1155	<	t.join(SHORT_DELAY_MS);
1156	<	assertFalse(t.isAlive());
1157	<	}
1158	<	catch (Exception ex) {
1159	<	unexpectedException();
1160	<	}
1529	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
1530	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
1531	>	public void testGetWaitQueueLength(boolean fair) {
1532	>	final PublicReentrantReadWriteLock lock =
1533	>	new PublicReentrantReadWriteLock(fair);
1534	>	final Condition c = lock.writeLock().newCondition();
1535	>	final CountDownLatch locked = new CountDownLatch(1);
1536	>	Thread t = newStartedThread(new CheckedRunnable() {
1537	>	public void realRun() throws InterruptedException {
1538	>	lock.writeLock().lock();
1539	>	assertEquals(0, lock.getWaitQueueLength(c));
1540	>	locked.countDown();
1541	>	c.await();
1542	>	lock.writeLock().unlock();
1543	>	}});
1544	>
1545	>	await(locked);
1546	>	lock.writeLock().lock();
1547	>	assertHasWaiters(lock, c, t);
1548	>	assertEquals(1, lock.getWaitQueueLength(c));
1549	>	c.signal();
1550	>	assertHasNoWaiters(lock, c);
1551	>	assertEquals(0, lock.getWaitQueueLength(c));
1552	>	lock.writeLock().unlock();
1553	>	awaitTermination(t);
1554		}
1555
1163	–
1556		/**
1557		* getWaitingThreads returns only and all waiting threads
1558		*/
1559	<	public void testGetWaitingThreads() {
1560	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1559	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
1560	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
1561	>	public void testGetWaitingThreads(boolean fair) {
1562	>	final PublicReentrantReadWriteLock lock =
1563	>	new PublicReentrantReadWriteLock(fair);
1564		final Condition c = lock.writeLock().newCondition();
1565	<	Thread t1 = new Thread(new Runnable() {
1566	<	public void run() {
1567	<	try {
1568	<	lock.writeLock().lock();
1569	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1570	<	c.await();
1571	<	lock.writeLock().unlock();
1572	<	}
1573	<	catch(InterruptedException e) {
1574	<	threadUnexpectedException();
1575	<	}
1576	<	}
1577	<	});
1578	<
1579	<	Thread t2 = new Thread(new Runnable() {
1580	<	public void run() {
1581	<	try {
1582	<	lock.writeLock().lock();
1583	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1584	<	c.await();
1585	<	lock.writeLock().unlock();
1586	<	}
1587	<	catch(InterruptedException e) {
1588	<	threadUnexpectedException();
1589	<	}
1590	<	}
1591	<	});
1592	<
1593	<	try {
1594	<	lock.writeLock().lock();
1595	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1596	<	lock.writeLock().unlock();
1597	<	t1.start();
1598	<	Thread.sleep(SHORT_DELAY_MS);
1599	<	t2.start();
1600	<	Thread.sleep(SHORT_DELAY_MS);
1601	<	lock.writeLock().lock();
1602	<	assertTrue(lock.hasWaiters(c));
1603	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1604	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1605	<	c.signalAll();
1606	<	lock.writeLock().unlock();
1607	<	Thread.sleep(SHORT_DELAY_MS);
1608	<	lock.writeLock().lock();
1609	<	assertFalse(lock.hasWaiters(c));
1610	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1611	<	lock.writeLock().unlock();
1612	<	t1.join(SHORT_DELAY_MS);
1613	<	t2.join(SHORT_DELAY_MS);
1614	<	assertFalse(t1.isAlive());
1615	<	assertFalse(t2.isAlive());
1616	<	}
1617	<	catch (Exception ex) {
1618	<	unexpectedException();
1619	<	}
1565	>	final CountDownLatch locked1 = new CountDownLatch(1);
1566	>	final CountDownLatch locked2 = new CountDownLatch(1);
1567	>	Thread t1 = new Thread(new CheckedRunnable() {
1568	>	public void realRun() throws InterruptedException {
1569	>	lock.writeLock().lock();
1570	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1571	>	locked1.countDown();
1572	>	c.await();
1573	>	lock.writeLock().unlock();
1574	>	}});
1575	>
1576	>	Thread t2 = new Thread(new CheckedRunnable() {
1577	>	public void realRun() throws InterruptedException {
1578	>	lock.writeLock().lock();
1579	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1580	>	locked2.countDown();
1581	>	c.await();
1582	>	lock.writeLock().unlock();
1583	>	}});
1584	>
1585	>	lock.writeLock().lock();
1586	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1587	>	lock.writeLock().unlock();
1588	>
1589	>	t1.start();
1590	>	await(locked1);
1591	>	t2.start();
1592	>	await(locked2);
1593	>
1594	>	lock.writeLock().lock();
1595	>	assertTrue(lock.hasWaiters(c));
1596	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1597	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1598	>	assertEquals(2, lock.getWaitingThreads(c).size());
1599	>	c.signalAll();
1600	>	assertHasNoWaiters(lock, c);
1601	>	lock.writeLock().unlock();
1602	>
1603	>	awaitTermination(t1);
1604	>	awaitTermination(t2);
1605	>
1606	>	assertHasNoWaiters(lock, c);
1607	>	}
1608	>
1609	>	/**
1610	>	* toString indicates current lock state
1611	>	*/
1612	>	public void testToString()      { testToString(false); }
1613	>	public void testToString_fair() { testToString(true); }
1614	>	public void testToString(boolean fair) {
1615	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1616	>	String us = lock.toString();
1617	>	assertTrue(us.indexOf("Write locks = 0") >= 0);
1618	>	assertTrue(us.indexOf("Read locks = 0") >= 0);
1619	>	lock.writeLock().lock();
1620	>	String ws = lock.toString();
1621	>	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1622	>	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1623	>	lock.writeLock().unlock();
1624	>	lock.readLock().lock();
1625	>	lock.readLock().lock();
1626	>	String rs = lock.toString();
1627	>	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1628	>	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1629	>	}
1630	>
1631	>	/**
1632	>	* readLock.toString indicates current lock state
1633	>	*/
1634	>	public void testReadLockToString()      { testReadLockToString(false); }
1635	>	public void testReadLockToString_fair() { testReadLockToString(true); }
1636	>	public void testReadLockToString(boolean fair) {
1637	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1638	>	String us = lock.readLock().toString();
1639	>	assertTrue(us.indexOf("Read locks = 0") >= 0);
1640	>	lock.readLock().lock();
1641	>	lock.readLock().lock();
1642	>	String rs = lock.readLock().toString();
1643	>	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1644	>	}
1645	>
1646	>	/**
1647	>	* writeLock.toString indicates current lock state
1648	>	*/
1649	>	public void testWriteLockToString()      { testWriteLockToString(false); }
1650	>	public void testWriteLockToString_fair() { testWriteLockToString(true); }
1651	>	public void testWriteLockToString(boolean fair) {
1652	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1653	>	String us = lock.writeLock().toString();
1654	>	assertTrue(us.indexOf("Unlocked") >= 0);
1655	>	lock.writeLock().lock();
1656	>	String ls = lock.writeLock().toString();
1657	>	assertTrue(ls.indexOf("Locked") >= 0);
1658		}
1659
1660		}

Diff Legend

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