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 1.20 by dl, Fri Jul 2 10:24:00 2004 UTC vs.
Revision 1.73 by jsr166, Sat Apr 25 04:55:31 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.concurrent.locks.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.util.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>
11	>	import java.util.Arrays;
12	>	import java.util.Collection;
13	>	import java.util.HashSet;
14	>	import java.util.concurrent.CountDownLatch;
15	>	import java.util.concurrent.atomic.AtomicBoolean;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.Lock;
18	>	import java.util.concurrent.locks.ReentrantReadWriteLock;
19	>
20	>	import junit.framework.AssertionFailedError;
21	>	import junit.framework.Test;
22	>	import junit.framework.TestSuite;
23
24		public class ReentrantReadWriteLockTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run (suite());
26	>	main(suite(), args);
27		}
28		public static Test suite() {
29	<	return new TestSuite(ReentrantReadWriteLockTest.class);
29	>	return new TestSuite(ReentrantReadWriteLockTest.class);
30		}
31
32		/**
33		* A runnable calling lockInterruptibly
34		*/
35	<	class InterruptibleLockRunnable implements Runnable {
35	>	class InterruptibleLockRunnable extends CheckedRunnable {
36		final ReentrantReadWriteLock lock;
37		InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
38	<	public void run() {
39	<	try {
31	<	lock.writeLock().lockInterruptibly();
32	<	} catch(InterruptedException success){}
38	>	public void realRun() throws InterruptedException {
39	>	lock.writeLock().lockInterruptibly();
40		}
41		}
42
36	–
43		/**
44		* A runnable calling lockInterruptibly that expects to be
45		* interrupted
46		*/
47	<	class InterruptedLockRunnable implements Runnable {
47	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
48		final ReentrantReadWriteLock lock;
49		InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; }
50	<	public void run() {
51	<	try {
46	<	lock.writeLock().lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
50	>	public void realRun() throws InterruptedException {
51	>	lock.writeLock().lockInterruptibly();
52		}
53		}
54
#	Line 54 | Line 57 | public class ReentrantReadWriteLockTest
57		*/
58		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
59		PublicReentrantReadWriteLock() { super(); }
60	<	public Collection<Thread> getQueuedThreads() {
61	<	return super.getQueuedThreads();
60	>	PublicReentrantReadWriteLock(boolean fair) { super(fair); }
61	>	public Thread getOwner() {
62	>	return super.getOwner();
63	>	}
64	>	public Collection<Thread> getQueuedThreads() {
65	>	return super.getQueuedThreads();
66		}
67	<	public Collection<Thread> getWaitingThreads(Condition c) {
68	<	return super.getWaitingThreads(c);
67	>	public Collection<Thread> getWaitingThreads(Condition c) {
68	>	return super.getWaitingThreads(c);
69		}
70		}
71
72		/**
73	<	* Constructor sets given fairness, and is in unlocked state
73	>	* Releases write lock, checking that it had a hold count of 1.
74		*/
75	<	public void testConstructor() {
76	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
77	<	assertFalse(rl.isFair());
78	<	assertFalse(rl.isWriteLocked());
79	<	assertEquals(0, rl.getReadLockCount());
80	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
74	<	assertTrue(r2.isFair());
75	<	assertFalse(r2.isWriteLocked());
76	<	assertEquals(0, r2.getReadLockCount());
75	>	void releaseWriteLock(PublicReentrantReadWriteLock lock) {
76	>	ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock();
77	>	assertWriteLockedByMoi(lock);
78	>	assertEquals(1, lock.getWriteHoldCount());
79	>	writeLock.unlock();
80	>	assertNotWriteLocked(lock);
81		}
82
83		/**
84	<	* write-locking and read-locking an unlocked lock succeed
84	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
85		*/
86	<	public void testLock() {
87	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
88	<	rl.writeLock().lock();
89	<	assertTrue(rl.isWriteLocked());
90	<	assertTrue(rl.isWriteLockedByCurrentThread());
91	<	assertEquals(0, rl.getReadLockCount());
92	<	rl.writeLock().unlock();
93	<	assertFalse(rl.isWriteLocked());
94	<	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());
86	>	void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) {
87	>	long startTime = System.nanoTime();
88	>	while (!lock.hasQueuedThread(t)) {
89	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
90	>	throw new AssertionFailedError("timed out");
91	>	Thread.yield();
92	>	}
93	>	assertTrue(t.isAlive());
94	>	assertNotSame(t, lock.getOwner());
95		}
96
97	+	/**
98	+	* Checks that lock is not write-locked.
99	+	*/
100	+	void assertNotWriteLocked(PublicReentrantReadWriteLock lock) {
101	+	assertFalse(lock.isWriteLocked());
102	+	assertFalse(lock.isWriteLockedByCurrentThread());
103	+	assertFalse(lock.writeLock().isHeldByCurrentThread());
104	+	assertEquals(0, lock.getWriteHoldCount());
105	+	assertEquals(0, lock.writeLock().getHoldCount());
106	+	assertNull(lock.getOwner());
107	+	}
108
109		/**
110	<	* locking an unlocked fair lock succeeds
111	<	*/
112	<	public void testFairLock() {
113	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
114	<	rl.writeLock().lock();
115	<	assertTrue(rl.isWriteLocked());
116	<	assertTrue(rl.isWriteLockedByCurrentThread());
117	<	assertEquals(0, rl.getReadLockCount());
118	<	rl.writeLock().unlock();
119	<	assertFalse(rl.isWriteLocked());
120	<	assertFalse(rl.isWriteLockedByCurrentThread());
121	<	assertEquals(0, rl.getReadLockCount());
122	<	rl.readLock().lock();
123	<	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());
110	>	* Checks that lock is write-locked by the given thread.
111	>	*/
112	>	void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) {
113	>	assertTrue(lock.isWriteLocked());
114	>	assertSame(t, lock.getOwner());
115	>	assertEquals(t == Thread.currentThread(),
116	>	lock.isWriteLockedByCurrentThread());
117	>	assertEquals(t == Thread.currentThread(),
118	>	lock.writeLock().isHeldByCurrentThread());
119	>	assertEquals(t == Thread.currentThread(),
120	>	lock.getWriteHoldCount() > 0);
121	>	assertEquals(t == Thread.currentThread(),
122	>	lock.writeLock().getHoldCount() > 0);
123	>	assertEquals(0, lock.getReadLockCount());
124		}
125
126		/**
127	<	* getWriteHoldCount returns number of recursive holds
127	>	* Checks that lock is write-locked by the current thread.
128		*/
129	<	public void testGetHoldCount() {
130	<	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	<	}
129	>	void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) {
130	>	assertWriteLockedBy(lock, Thread.currentThread());
131		}
140	–
132
133		/**
134	<	* write-unlocking an unlocked lock throws IllegalMonitorStateException
134	>	* Checks that condition c has no waiters.
135	>	*/
136	>	void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) {
137	>	assertHasWaiters(lock, c, new Thread[] {});
138	>	}
139	>
140	>	/**
141	>	* Checks that condition c has exactly the given waiter threads.
142		*/
143	<	public void testUnlock_IllegalMonitorStateException() {
144	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
145	<	try {
146	<	rl.writeLock().unlock();
147	<	shouldThrow();
148	<	} catch(IllegalMonitorStateException success){}
143	>	void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c,
144	>	Thread... threads) {
145	>	lock.writeLock().lock();
146	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
147	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
148	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
149	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
150	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
151	>	new HashSet<Thread>(Arrays.asList(threads)));
152	>	lock.writeLock().unlock();
153		}
154
155	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
156
157		/**
158	<	* write-lockInterruptibly is interruptible
158	>	* Awaits condition using the specified AwaitMethod.
159		*/
160	<	public void testWriteLockInterruptibly_Interrupted() {
161	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
162	<	Thread t = new Thread(new Runnable() {
163	<	public void run() {
164	<	try {
165	<	lock.writeLock().lockInterruptibly();
166	<	lock.writeLock().unlock();
167	<	lock.writeLock().lockInterruptibly();
168	<	lock.writeLock().unlock();
169	<	} catch(InterruptedException success){}
170	<	}
171	<	});
172	<	try {
160	>	void await(Condition c, AwaitMethod awaitMethod)
161	>	throws InterruptedException {
162	>	switch (awaitMethod) {
163	>	case await:
164	>	c.await();
165	>	break;
166	>	case awaitTimed:
167	>	assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS));
168	>	break;
169	>	case awaitNanos:
170	>	long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
171	>	assertTrue(nanosRemaining > 0);
172	>	break;
173	>	case awaitUntil:
174	>	java.util.Date d = new java.util.Date();
175	>	assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS)));
176	>	break;
177	>	default:
178	>	throw new AssertionError();
179	>	}
180	>	}
181	>
182	>	/**
183	>	* Constructor sets given fairness, and is in unlocked state
184	>	*/
185	>	public void testConstructor() {
186	>	PublicReentrantReadWriteLock lock;
187	>
188	>	lock = new PublicReentrantReadWriteLock();
189	>	assertFalse(lock.isFair());
190	>	assertNotWriteLocked(lock);
191	>	assertEquals(0, lock.getReadLockCount());
192	>
193	>	lock = new PublicReentrantReadWriteLock(true);
194	>	assertTrue(lock.isFair());
195	>	assertNotWriteLocked(lock);
196	>	assertEquals(0, lock.getReadLockCount());
197	>
198	>	lock = new PublicReentrantReadWriteLock(false);
199	>	assertFalse(lock.isFair());
200	>	assertNotWriteLocked(lock);
201	>	assertEquals(0, lock.getReadLockCount());
202	>	}
203	>
204	>	/**
205	>	* write-locking and read-locking an unlocked lock succeed
206	>	*/
207	>	public void testLock()      { testLock(false); }
208	>	public void testLock_fair() { testLock(true); }
209	>	public void testLock(boolean fair) {
210	>	PublicReentrantReadWriteLock lock =
211	>	new PublicReentrantReadWriteLock(fair);
212	>	assertNotWriteLocked(lock);
213	>	lock.writeLock().lock();
214	>	assertWriteLockedByMoi(lock);
215	>	lock.writeLock().unlock();
216	>	assertNotWriteLocked(lock);
217	>	assertEquals(0, lock.getReadLockCount());
218	>	lock.readLock().lock();
219	>	assertNotWriteLocked(lock);
220	>	assertEquals(1, lock.getReadLockCount());
221	>	lock.readLock().unlock();
222	>	assertNotWriteLocked(lock);
223	>	assertEquals(0, lock.getReadLockCount());
224	>	}
225	>
226	>	/**
227	>	* getWriteHoldCount returns number of recursive holds
228	>	*/
229	>	public void testGetWriteHoldCount()      { testGetWriteHoldCount(false); }
230	>	public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); }
231	>	public void testGetWriteHoldCount(boolean fair) {
232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
233	>	for (int i = 1; i <= SIZE; i++) {
234		lock.writeLock().lock();
235	<	t.start();
236	<	t.interrupt();
235	>	assertEquals(i,lock.getWriteHoldCount());
236	>	}
237	>	for (int i = SIZE; i > 0; i--) {
238		lock.writeLock().unlock();
239	<	t.join();
175	<	} catch(Exception e){
176	<	unexpectedException();
239	>	assertEquals(i-1,lock.getWriteHoldCount());
240		}
241	<	}
241	>	}
242
243		/**
244	<	* timed write-tryLock is interruptible
244	>	* writelock.getHoldCount returns number of recursive holds
245		*/
246	<	public void testWriteTryLock_Interrupted() {
247	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
248	<	lock.writeLock().lock();
249	<	Thread t = new Thread(new Runnable() {
250	<	public void run() {
251	<	try {
252	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
253	<	} catch(InterruptedException success){}
254	<	}
192	<	});
193	<	try {
194	<	t.start();
195	<	t.interrupt();
246	>	public void testGetHoldCount()      { testGetHoldCount(false); }
247	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
248	>	public void testGetHoldCount(boolean fair) {
249	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
250	>	for (int i = 1; i <= SIZE; i++) {
251	>	lock.writeLock().lock();
252	>	assertEquals(i,lock.writeLock().getHoldCount());
253	>	}
254	>	for (int i = SIZE; i > 0; i--) {
255		lock.writeLock().unlock();
256	<	t.join();
198	<	} catch(Exception e){
199	<	unexpectedException();
256	>	assertEquals(i-1,lock.writeLock().getHoldCount());
257		}
258		}
259
260		/**
261	<	* read-lockInterruptibly is interruptible
261	>	* getReadHoldCount returns number of recursive holds
262		*/
263	<	public void testReadLockInterruptibly_Interrupted() {
264	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
265	<	lock.writeLock().lock();
266	<	Thread t = new Thread(new Runnable() {
267	<	public void run() {
268	<	try {
269	<	lock.readLock().lockInterruptibly();
270	<	} catch(InterruptedException success){}
271	<	}
272	<	});
263	>	public void testGetReadHoldCount()      { testGetReadHoldCount(false); }
264	>	public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); }
265	>	public void testGetReadHoldCount(boolean fair) {
266	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
267	>	for (int i = 1; i <= SIZE; i++) {
268	>	lock.readLock().lock();
269	>	assertEquals(i,lock.getReadHoldCount());
270	>	}
271	>	for (int i = SIZE; i > 0; i--) {
272	>	lock.readLock().unlock();
273	>	assertEquals(i-1,lock.getReadHoldCount());
274	>	}
275	>	}
276	>
277	>	/**
278	>	* write-unlocking an unlocked lock throws IllegalMonitorStateException
279	>	*/
280	>	public void testWriteUnlock_IMSE()      { testWriteUnlock_IMSE(false); }
281	>	public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); }
282	>	public void testWriteUnlock_IMSE(boolean fair) {
283	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
284		try {
217	–	t.start();
218	–	t.interrupt();
285		lock.writeLock().unlock();
286	<	t.join();
287	<	} catch(Exception e){
288	<	unexpectedException();
223	<	}
224	<	}
286	>	shouldThrow();
287	>	} catch (IllegalMonitorStateException success) {}
288	>	}
289
290		/**
291	<	* timed read-tryLock is interruptible
291	>	* read-unlocking an unlocked lock throws IllegalMonitorStateException
292		*/
293	<	public void testReadTryLock_Interrupted() {
294	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
295	<	lock.writeLock().lock();
296	<	Thread t = new Thread(new Runnable() {
233	<	public void run() {
234	<	try {
235	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
236	<	threadShouldThrow();
237	<	} catch(InterruptedException success){}
238	<	}
239	<	});
293	>	public void testReadUnlock_IMSE()      { testReadUnlock_IMSE(false); }
294	>	public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); }
295	>	public void testReadUnlock_IMSE(boolean fair) {
296	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
297		try {
298	<	t.start();
299	<	t.interrupt();
300	<	t.join();
301	<	} catch(Exception e){
302	<	unexpectedException();
303	<	}
298	>	lock.readLock().unlock();
299	>	shouldThrow();
300	>	} catch (IllegalMonitorStateException success) {}
301	>	}
302	>
303	>	/**
304	>	* write-lockInterruptibly is interruptible
305	>	*/
306	>	public void testWriteLockInterruptibly_Interruptible()      { testWriteLockInterruptibly_Interruptible(false); }
307	>	public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); }
308	>	public void testWriteLockInterruptibly_Interruptible(boolean fair) {
309	>	final PublicReentrantReadWriteLock lock =
310	>	new PublicReentrantReadWriteLock(fair);
311	>	lock.writeLock().lock();
312	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
313	>	public void realRun() throws InterruptedException {
314	>	lock.writeLock().lockInterruptibly();
315	>	}});
316	>
317	>	waitForQueuedThread(lock, t);
318	>	t.interrupt();
319	>	awaitTermination(t);
320	>	releaseWriteLock(lock);
321	>	}
322	>
323	>	/**
324	>	* timed write-tryLock is interruptible
325	>	*/
326	>	public void testWriteTryLock_Interruptible()      { testWriteTryLock_Interruptible(false); }
327	>	public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); }
328	>	public void testWriteTryLock_Interruptible(boolean fair) {
329	>	final PublicReentrantReadWriteLock lock =
330	>	new PublicReentrantReadWriteLock(fair);
331	>	lock.writeLock().lock();
332	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
333	>	public void realRun() throws InterruptedException {
334	>	lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
335	>	}});
336	>
337	>	waitForQueuedThread(lock, t);
338	>	t.interrupt();
339	>	awaitTermination(t);
340	>	releaseWriteLock(lock);
341	>	}
342	>
343	>	/**
344	>	* read-lockInterruptibly is interruptible
345	>	*/
346	>	public void testReadLockInterruptibly_Interruptible()      { testReadLockInterruptibly_Interruptible(false); }
347	>	public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); }
348	>	public void testReadLockInterruptibly_Interruptible(boolean fair) {
349	>	final PublicReentrantReadWriteLock lock =
350	>	new PublicReentrantReadWriteLock(fair);
351	>	lock.writeLock().lock();
352	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
353	>	public void realRun() throws InterruptedException {
354	>	lock.readLock().lockInterruptibly();
355	>	}});
356	>
357	>	waitForQueuedThread(lock, t);
358	>	t.interrupt();
359	>	awaitTermination(t);
360	>	releaseWriteLock(lock);
361	>	}
362	>
363	>	/**
364	>	* timed read-tryLock is interruptible
365	>	*/
366	>	public void testReadTryLock_Interruptible()      { testReadTryLock_Interruptible(false); }
367	>	public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); }
368	>	public void testReadTryLock_Interruptible(boolean fair) {
369	>	final PublicReentrantReadWriteLock lock =
370	>	new PublicReentrantReadWriteLock(fair);
371	>	lock.writeLock().lock();
372	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
373	>	public void realRun() throws InterruptedException {
374	>	lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
375	>	}});
376	>
377	>	waitForQueuedThread(lock, t);
378	>	t.interrupt();
379	>	awaitTermination(t);
380	>	releaseWriteLock(lock);
381	>	}
382	>
383	>	/**
384	>	* write-tryLock on an unlocked lock succeeds
385	>	*/
386	>	public void testWriteTryLock()      { testWriteTryLock(false); }
387	>	public void testWriteTryLock_fair() { testWriteTryLock(true); }
388	>	public void testWriteTryLock(boolean fair) {
389	>	final PublicReentrantReadWriteLock lock =
390	>	new PublicReentrantReadWriteLock(fair);
391	>	assertTrue(lock.writeLock().tryLock());
392	>	assertWriteLockedByMoi(lock);
393	>	assertTrue(lock.writeLock().tryLock());
394	>	assertWriteLockedByMoi(lock);
395	>	lock.writeLock().unlock();
396	>	releaseWriteLock(lock);
397		}
398
249	–
399		/**
400		* write-tryLock fails if locked
401		*/
402	<	public void testWriteTryLockWhenLocked() {
403	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
404	<	lock.writeLock().lock();
405	<	Thread t = new Thread(new Runnable() {
406	<	public void run() {
407	<	threadAssertFalse(lock.writeLock().tryLock());
408	<	}
409	<	});
410	<	try {
411	<	t.start();
412	<	t.join();
413	<	lock.writeLock().unlock();
414	<	} catch(Exception e){
415	<	unexpectedException();
267	<	}
268	<	}
402	>	public void testWriteTryLockWhenLocked()      { testWriteTryLockWhenLocked(false); }
403	>	public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); }
404	>	public void testWriteTryLockWhenLocked(boolean fair) {
405	>	final PublicReentrantReadWriteLock lock =
406	>	new PublicReentrantReadWriteLock(fair);
407	>	lock.writeLock().lock();
408	>	Thread t = newStartedThread(new CheckedRunnable() {
409	>	public void realRun() {
410	>	assertFalse(lock.writeLock().tryLock());
411	>	}});
412	>
413	>	awaitTermination(t);
414	>	releaseWriteLock(lock);
415	>	}
416
417		/**
418		* read-tryLock fails if locked
419		*/
420	<	public void testReadTryLockWhenLocked() {
421	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
422	<	lock.writeLock().lock();
423	<	Thread t = new Thread(new Runnable() {
424	<	public void run() {
425	<	threadAssertFalse(lock.readLock().tryLock());
426	<	}
427	<	});
428	<	try {
429	<	t.start();
430	<	t.join();
431	<	lock.writeLock().unlock();
432	<	} catch(Exception e){
433	<	unexpectedException();
287	<	}
288	<	}
420	>	public void testReadTryLockWhenLocked()      { testReadTryLockWhenLocked(false); }
421	>	public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); }
422	>	public void testReadTryLockWhenLocked(boolean fair) {
423	>	final PublicReentrantReadWriteLock lock =
424	>	new PublicReentrantReadWriteLock(fair);
425	>	lock.writeLock().lock();
426	>	Thread t = newStartedThread(new CheckedRunnable() {
427	>	public void realRun() {
428	>	assertFalse(lock.readLock().tryLock());
429	>	}});
430	>
431	>	awaitTermination(t);
432	>	releaseWriteLock(lock);
433	>	}
434
435		/**
436		* Multiple threads can hold a read lock when not write-locked
437		*/
438	<	public void testMultipleReadLocks() {
439	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
440	<	lock.readLock().lock();
441	<	Thread t = new Thread(new Runnable() {
442	<	public void run() {
443	<	threadAssertTrue(lock.readLock().tryLock());
444	<	lock.readLock().unlock();
445	<	}
446	<	});
447	<	try {
448	<	t.start();
449	<	t.join();
450	<	lock.readLock().unlock();
451	<	} catch(Exception e){
452	<	unexpectedException();
453	<	}
454	<	}
438	>	public void testMultipleReadLocks()      { testMultipleReadLocks(false); }
439	>	public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); }
440	>	public void testMultipleReadLocks(boolean fair) {
441	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
442	>	lock.readLock().lock();
443	>	Thread t = newStartedThread(new CheckedRunnable() {
444	>	public void realRun() throws InterruptedException {
445	>	assertTrue(lock.readLock().tryLock());
446	>	lock.readLock().unlock();
447	>	assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS));
448	>	lock.readLock().unlock();
449	>	lock.readLock().lock();
450	>	lock.readLock().unlock();
451	>	}});
452	>
453	>	awaitTermination(t);
454	>	lock.readLock().unlock();
455	>	}
456
457		/**
458	<	* A writelock succeeds after reading threads unlock
458	>	* A writelock succeeds only after a reading thread unlocks
459		*/
460	<	public void testWriteAfterMultipleReadLocks() {
461	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
462	<	lock.readLock().lock();
463	<	Thread t1 = new Thread(new Runnable() {
464	<	public void run() {
465	<	lock.readLock().lock();
466	<	lock.readLock().unlock();
467	<	}
468	<	});
469	<	Thread t2 = new Thread(new Runnable() {
470	<	public void run() {
471	<	lock.writeLock().lock();
472	<	lock.writeLock().unlock();
473	<	}
474	<	});
460	>	public void testWriteAfterReadLock()      { testWriteAfterReadLock(false); }
461	>	public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); }
462	>	public void testWriteAfterReadLock(boolean fair) {
463	>	final PublicReentrantReadWriteLock lock =
464	>	new PublicReentrantReadWriteLock(fair);
465	>	lock.readLock().lock();
466	>	Thread t = newStartedThread(new CheckedRunnable() {
467	>	public void realRun() {
468	>	assertEquals(1, lock.getReadLockCount());
469	>	lock.writeLock().lock();
470	>	assertEquals(0, lock.getReadLockCount());
471	>	lock.writeLock().unlock();
472	>	}});
473	>	waitForQueuedThread(lock, t);
474	>	assertNotWriteLocked(lock);
475	>	assertEquals(1, lock.getReadLockCount());
476	>	lock.readLock().unlock();
477	>	assertEquals(0, lock.getReadLockCount());
478	>	awaitTermination(t);
479	>	assertNotWriteLocked(lock);
480	>	}
481
482	<	try {
483	<	t1.start();
484	<	t2.start();
485	<	Thread.sleep(SHORT_DELAY_MS);
486	<	lock.readLock().unlock();
487	<	t1.join(MEDIUM_DELAY_MS);
488	<	t2.join(MEDIUM_DELAY_MS);
489	<	assertTrue(!t1.isAlive());
490	<	assertTrue(!t2.isAlive());
491	<
492	<	} catch(Exception e){
493	<	unexpectedException();
494	<	}
495	<	}
482	>	/**
483	>	* A writelock succeeds only after reading threads unlock
484	>	*/
485	>	public void testWriteAfterMultipleReadLocks()      { testWriteAfterMultipleReadLocks(false); }
486	>	public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); }
487	>	public void testWriteAfterMultipleReadLocks(boolean fair) {
488	>	final PublicReentrantReadWriteLock lock =
489	>	new PublicReentrantReadWriteLock(fair);
490	>	lock.readLock().lock();
491	>	lock.readLock().lock();
492	>	Thread t1 = newStartedThread(new CheckedRunnable() {
493	>	public void realRun() {
494	>	lock.readLock().lock();
495	>	assertEquals(3, lock.getReadLockCount());
496	>	lock.readLock().unlock();
497	>	}});
498	>	awaitTermination(t1);
499	>
500	>	Thread t2 = newStartedThread(new CheckedRunnable() {
501	>	public void realRun() {
502	>	assertEquals(2, lock.getReadLockCount());
503	>	lock.writeLock().lock();
504	>	assertEquals(0, lock.getReadLockCount());
505	>	lock.writeLock().unlock();
506	>	}});
507	>	waitForQueuedThread(lock, t2);
508	>	assertNotWriteLocked(lock);
509	>	assertEquals(2, lock.getReadLockCount());
510	>	lock.readLock().unlock();
511	>	lock.readLock().unlock();
512	>	assertEquals(0, lock.getReadLockCount());
513	>	awaitTermination(t2);
514	>	assertNotWriteLocked(lock);
515	>	}
516
517		/**
518	<	* Readlocks succeed after a writing thread unlocks
518	>	* A thread that tries to acquire a fair read lock (non-reentrantly)
519	>	* will block if there is a waiting writer thread
520		*/
521	<	public void testReadAfterWriteLock() {
522	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
523	<	lock.writeLock().lock();
524	<	Thread t1 = new Thread(new Runnable() {
352	<	public void run() {
353	<	lock.readLock().lock();
354	<	lock.readLock().unlock();
355	<	}
356	<	});
357	<	Thread t2 = new Thread(new Runnable() {
358	<	public void run() {
359	<	lock.readLock().lock();
360	<	lock.readLock().unlock();
361	<	}
362	<	});
521	>	public void testReaderWriterReaderFairFifo() {
522	>	final PublicReentrantReadWriteLock lock =
523	>	new PublicReentrantReadWriteLock(true);
524	>	final AtomicBoolean t1GotLock = new AtomicBoolean(false);
525
526	<	try {
527	<	t1.start();
528	<	t2.start();
529	<	Thread.sleep(SHORT_DELAY_MS);
530	<	lock.writeLock().unlock();
531	<	t1.join(MEDIUM_DELAY_MS);
532	<	t2.join(MEDIUM_DELAY_MS);
533	<	assertTrue(!t1.isAlive());
534	<	assertTrue(!t2.isAlive());
535	<
536	<	} catch(Exception e){
537	<	unexpectedException();
538	<	}
539	<	}
526	>	lock.readLock().lock();
527	>	Thread t1 = newStartedThread(new CheckedRunnable() {
528	>	public void realRun() {
529	>	assertEquals(1, lock.getReadLockCount());
530	>	lock.writeLock().lock();
531	>	assertEquals(0, lock.getReadLockCount());
532	>	t1GotLock.set(true);
533	>	lock.writeLock().unlock();
534	>	}});
535	>	waitForQueuedThread(lock, t1);
536	>
537	>	Thread t2 = newStartedThread(new CheckedRunnable() {
538	>	public void realRun() {
539	>	assertEquals(1, lock.getReadLockCount());
540	>	lock.readLock().lock();
541	>	assertEquals(1, lock.getReadLockCount());
542	>	assertTrue(t1GotLock.get());
543	>	lock.readLock().unlock();
544	>	}});
545	>	waitForQueuedThread(lock, t2);
546	>	assertTrue(t1.isAlive());
547	>	assertNotWriteLocked(lock);
548	>	assertEquals(1, lock.getReadLockCount());
549	>	lock.readLock().unlock();
550	>	awaitTermination(t1);
551	>	awaitTermination(t2);
552	>	assertNotWriteLocked(lock);
553	>	}
554	>
555	>	/**
556	>	* Readlocks succeed only after a writing thread unlocks
557	>	*/
558	>	public void testReadAfterWriteLock()      { testReadAfterWriteLock(false); }
559	>	public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); }
560	>	public void testReadAfterWriteLock(boolean fair) {
561	>	final PublicReentrantReadWriteLock lock =
562	>	new PublicReentrantReadWriteLock(fair);
563	>	lock.writeLock().lock();
564	>	Thread t1 = newStartedThread(new CheckedRunnable() {
565	>	public void realRun() {
566	>	lock.readLock().lock();
567	>	lock.readLock().unlock();
568	>	}});
569	>	Thread t2 = newStartedThread(new CheckedRunnable() {
570	>	public void realRun() {
571	>	lock.readLock().lock();
572	>	lock.readLock().unlock();
573	>	}});
574	>
575	>	waitForQueuedThread(lock, t1);
576	>	waitForQueuedThread(lock, t2);
577	>	releaseWriteLock(lock);
578	>	awaitTermination(t1);
579	>	awaitTermination(t2);
580	>	}
581
582		/**
583		* Read trylock succeeds if write locked by current thread
584		*/
585	<	public void testReadHoldingWriteLock() {
586	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
587	<	lock.writeLock().lock();
585	>	public void testReadHoldingWriteLock()      { testReadHoldingWriteLock(false); }
586	>	public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); }
587	>	public void testReadHoldingWriteLock(boolean fair) {
588	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
589	>	lock.writeLock().lock();
590		assertTrue(lock.readLock().tryLock());
591		lock.readLock().unlock();
592		lock.writeLock().unlock();
593	<	}
593	>	}
594	>
595	>	/**
596	>	* Read trylock succeeds (barging) even in the presence of waiting
597	>	* readers and/or writers
598	>	*/
599	>	public void testReadTryLockBarging()      { testReadTryLockBarging(false); }
600	>	public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); }
601	>	public void testReadTryLockBarging(boolean fair) {
602	>	final PublicReentrantReadWriteLock lock =
603	>	new PublicReentrantReadWriteLock(fair);
604	>	lock.readLock().lock();
605	>
606	>	Thread t1 = newStartedThread(new CheckedRunnable() {
607	>	public void realRun() {
608	>	lock.writeLock().lock();
609	>	lock.writeLock().unlock();
610	>	}});
611	>
612	>	waitForQueuedThread(lock, t1);
613	>
614	>	Thread t2 = newStartedThread(new CheckedRunnable() {
615	>	public void realRun() {
616	>	lock.readLock().lock();
617	>	lock.readLock().unlock();
618	>	}});
619	>
620	>	if (fair)
621	>	waitForQueuedThread(lock, t2);
622	>
623	>	Thread t3 = newStartedThread(new CheckedRunnable() {
624	>	public void realRun() {
625	>	lock.readLock().tryLock();
626	>	lock.readLock().unlock();
627	>	}});
628	>
629	>	assertTrue(lock.getReadLockCount() > 0);
630	>	awaitTermination(t3);
631	>	assertTrue(t1.isAlive());
632	>	if (fair) assertTrue(t2.isAlive());
633	>	lock.readLock().unlock();
634	>	awaitTermination(t1);
635	>	awaitTermination(t2);
636	>	}
637
638		/**
639		* Read lock succeeds if write locked by current thread even if
640	<	* other threads are waiting
640	>	* other threads are waiting for readlock
641		*/
642	<	public void testReadHoldingWriteLock2() {
643	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
644	<	lock.writeLock().lock();
645	<	Thread t1 = new Thread(new Runnable() {
646	<	public void run() {
647	<	lock.readLock().lock();
648	<	lock.readLock().unlock();
649	<	}
402	<	});
403	<	Thread t2 = new Thread(new Runnable() {
404	<	public void run() {
405	<	lock.readLock().lock();
406	<	lock.readLock().unlock();
407	<	}
408	<	});
642	>	public void testReadHoldingWriteLock2()      { testReadHoldingWriteLock2(false); }
643	>	public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); }
644	>	public void testReadHoldingWriteLock2(boolean fair) {
645	>	final PublicReentrantReadWriteLock lock =
646	>	new PublicReentrantReadWriteLock(fair);
647	>	lock.writeLock().lock();
648	>	lock.readLock().lock();
649	>	lock.readLock().unlock();
650
651	<	try {
652	<	t1.start();
653	<	t2.start();
654	<	lock.readLock().lock();
655	<	lock.readLock().unlock();
656	<	Thread.sleep(SHORT_DELAY_MS);
657	<	lock.readLock().lock();
658	<	lock.readLock().unlock();
659	<	lock.writeLock().unlock();
660	<	t1.join(MEDIUM_DELAY_MS);
661	<	t2.join(MEDIUM_DELAY_MS);
662	<	assertTrue(!t1.isAlive());
663	<	assertTrue(!t2.isAlive());
664	<
665	<	} catch(Exception e){
666	<	unexpectedException();
667	<	}
668	<	}
651	>	Thread t1 = newStartedThread(new CheckedRunnable() {
652	>	public void realRun() {
653	>	lock.readLock().lock();
654	>	lock.readLock().unlock();
655	>	}});
656	>	Thread t2 = newStartedThread(new CheckedRunnable() {
657	>	public void realRun() {
658	>	lock.readLock().lock();
659	>	lock.readLock().unlock();
660	>	}});
661	>
662	>	waitForQueuedThread(lock, t1);
663	>	waitForQueuedThread(lock, t2);
664	>	assertWriteLockedByMoi(lock);
665	>	lock.readLock().lock();
666	>	lock.readLock().unlock();
667	>	releaseWriteLock(lock);
668	>	awaitTermination(t1);
669	>	awaitTermination(t2);
670	>	}
671
672		/**
673	<	* Fair Read trylock succeeds if write locked by current thread
673	>	* Read lock succeeds if write locked by current thread even if
674	>	* other threads are waiting for writelock
675		*/
676	<	public void testReadHoldingWriteLockFair() {
677	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
678	<	lock.writeLock().lock();
679	<	assertTrue(lock.readLock().tryLock());
676	>	public void testReadHoldingWriteLock3()      { testReadHoldingWriteLock3(false); }
677	>	public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); }
678	>	public void testReadHoldingWriteLock3(boolean fair) {
679	>	final PublicReentrantReadWriteLock lock =
680	>	new PublicReentrantReadWriteLock(fair);
681	>	lock.writeLock().lock();
682	>	lock.readLock().lock();
683	>	lock.readLock().unlock();
684	>
685	>	Thread t1 = newStartedThread(new CheckedRunnable() {
686	>	public void realRun() {
687	>	lock.writeLock().lock();
688	>	lock.writeLock().unlock();
689	>	}});
690	>	Thread t2 = newStartedThread(new CheckedRunnable() {
691	>	public void realRun() {
692	>	lock.writeLock().lock();
693	>	lock.writeLock().unlock();
694	>	}});
695	>
696	>	waitForQueuedThread(lock, t1);
697	>	waitForQueuedThread(lock, t2);
698	>	assertWriteLockedByMoi(lock);
699	>	lock.readLock().lock();
700		lock.readLock().unlock();
701	+	assertWriteLockedByMoi(lock);
702		lock.writeLock().unlock();
703	<	}
703	>	awaitTermination(t1);
704	>	awaitTermination(t2);
705	>	}
706
707		/**
708	<	* Fair Read lock succeeds if write locked by current thread even if
709	<	* other threads are waiting
708	>	* Write lock succeeds if write locked by current thread even if
709	>	* other threads are waiting for writelock
710		*/
711	<	public void testReadHoldingWriteLockFair2() {
712	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
713	<	lock.writeLock().lock();
714	<	Thread t1 = new Thread(new Runnable() {
715	<	public void run() {
716	<	lock.readLock().lock();
717	<	lock.readLock().unlock();
718	<	}
452	<	});
453	<	Thread t2 = new Thread(new Runnable() {
454	<	public void run() {
455	<	lock.readLock().lock();
456	<	lock.readLock().unlock();
457	<	}
458	<	});
459	<
460	<	try {
461	<	t1.start();
462	<	t2.start();
463	<	lock.readLock().lock();
464	<	lock.readLock().unlock();
465	<	Thread.sleep(SHORT_DELAY_MS);
466	<	lock.readLock().lock();
467	<	lock.readLock().unlock();
468	<	lock.writeLock().unlock();
469	<	t1.join(MEDIUM_DELAY_MS);
470	<	t2.join(MEDIUM_DELAY_MS);
471	<	assertTrue(!t1.isAlive());
472	<	assertTrue(!t2.isAlive());
473	<
474	<	} catch(Exception e){
475	<	unexpectedException();
476	<	}
477	<	}
711	>	public void testWriteHoldingWriteLock4()      { testWriteHoldingWriteLock4(false); }
712	>	public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); }
713	>	public void testWriteHoldingWriteLock4(boolean fair) {
714	>	final PublicReentrantReadWriteLock lock =
715	>	new PublicReentrantReadWriteLock(fair);
716	>	lock.writeLock().lock();
717	>	lock.writeLock().lock();
718	>	lock.writeLock().unlock();
719
720	+	Thread t1 = newStartedThread(new CheckedRunnable() {
721	+	public void realRun() {
722	+	lock.writeLock().lock();
723	+	lock.writeLock().unlock();
724	+	}});
725	+	Thread t2 = newStartedThread(new CheckedRunnable() {
726	+	public void realRun() {
727	+	lock.writeLock().lock();
728	+	lock.writeLock().unlock();
729	+	}});
730	+
731	+	waitForQueuedThread(lock, t1);
732	+	waitForQueuedThread(lock, t2);
733	+	assertWriteLockedByMoi(lock);
734	+	assertEquals(1, lock.getWriteHoldCount());
735	+	lock.writeLock().lock();
736	+	assertWriteLockedByMoi(lock);
737	+	assertEquals(2, lock.getWriteHoldCount());
738	+	lock.writeLock().unlock();
739	+	assertWriteLockedByMoi(lock);
740	+	assertEquals(1, lock.getWriteHoldCount());
741	+	lock.writeLock().unlock();
742	+	awaitTermination(t1);
743	+	awaitTermination(t2);
744	+	}
745
746		/**
747		* Read tryLock succeeds if readlocked but not writelocked
748		*/
749	<	public void testTryLockWhenReadLocked() {
750	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
751	<	lock.readLock().lock();
752	<	Thread t = new Thread(new Runnable() {
753	<	public void run() {
754	<	threadAssertTrue(lock.readLock().tryLock());
755	<	lock.readLock().unlock();
756	<	}
757	<	});
758	<	try {
493	<	t.start();
494	<	t.join();
495	<	lock.readLock().unlock();
496	<	} catch(Exception e){
497	<	unexpectedException();
498	<	}
499	<	}
749	>	public void testTryLockWhenReadLocked()      { testTryLockWhenReadLocked(false); }
750	>	public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); }
751	>	public void testTryLockWhenReadLocked(boolean fair) {
752	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
753	>	lock.readLock().lock();
754	>	Thread t = newStartedThread(new CheckedRunnable() {
755	>	public void realRun() {
756	>	assertTrue(lock.readLock().tryLock());
757	>	lock.readLock().unlock();
758	>	}});
759
760	<
760	>	awaitTermination(t);
761	>	lock.readLock().unlock();
762	>	}
763
764		/**
765		* write tryLock fails when readlocked
766		*/
767	<	public void testWriteTryLockWhenReadLocked() {
768	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
769	<	lock.readLock().lock();
770	<	Thread t = new Thread(new Runnable() {
771	<	public void run() {
772	<	threadAssertFalse(lock.writeLock().tryLock());
773	<	}
774	<	});
775	<	try {
515	<	t.start();
516	<	t.join();
517	<	lock.readLock().unlock();
518	<	} catch(Exception e){
519	<	unexpectedException();
520	<	}
521	<	}
767	>	public void testWriteTryLockWhenReadLocked()      { testWriteTryLockWhenReadLocked(false); }
768	>	public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); }
769	>	public void testWriteTryLockWhenReadLocked(boolean fair) {
770	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
771	>	lock.readLock().lock();
772	>	Thread t = newStartedThread(new CheckedRunnable() {
773	>	public void realRun() {
774	>	assertFalse(lock.writeLock().tryLock());
775	>	}});
776
777	<
777	>	awaitTermination(t);
778	>	lock.readLock().unlock();
779	>	}
780
781		/**
782		* write timed tryLock times out if locked
783		*/
784	<	public void testWriteTryLock_Timeout() {
785	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
786	<	lock.writeLock().lock();
787	<	Thread t = new Thread(new Runnable() {
788	<	public void run() {
789	<	try {
790	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
791	<	} catch (Exception ex) {
792	<	threadUnexpectedException();
793	<	}
794	<	}
795	<	});
796	<	try {
797	<	t.start();
798	<	t.join();
799	<	lock.writeLock().unlock();
800	<	} catch(Exception e){
545	<	unexpectedException();
546	<	}
547	<	}
784	>	public void testWriteTryLock_Timeout()      { testWriteTryLock_Timeout(false); }
785	>	public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); }
786	>	public void testWriteTryLock_Timeout(boolean fair) {
787	>	final PublicReentrantReadWriteLock lock =
788	>	new PublicReentrantReadWriteLock(fair);
789	>	lock.writeLock().lock();
790	>	Thread t = newStartedThread(new CheckedRunnable() {
791	>	public void realRun() throws InterruptedException {
792	>	long startTime = System.nanoTime();
793	>	long timeoutMillis = 10;
794	>	assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS));
795	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
796	>	}});
797	>
798	>	awaitTermination(t);
799	>	releaseWriteLock(lock);
800	>	}
801
802		/**
803		* read timed tryLock times out if write-locked
804		*/
805	<	public void testReadTryLock_Timeout() {
806	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
807	<	lock.writeLock().lock();
808	<	Thread t = new Thread(new Runnable() {
809	<	public void run() {
810	<	try {
811	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
812	<	} catch (Exception ex) {
813	<	threadUnexpectedException();
814	<	}
815	<	}
816	<	});
564	<	try {
565	<	t.start();
566	<	t.join();
567	<	lock.writeLock().unlock();
568	<	} catch(Exception e){
569	<	unexpectedException();
570	<	}
571	<	}
805	>	public void testReadTryLock_Timeout()      { testReadTryLock_Timeout(false); }
806	>	public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); }
807	>	public void testReadTryLock_Timeout(boolean fair) {
808	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
809	>	lock.writeLock().lock();
810	>	Thread t = newStartedThread(new CheckedRunnable() {
811	>	public void realRun() throws InterruptedException {
812	>	long startTime = System.nanoTime();
813	>	long timeoutMillis = 10;
814	>	assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS));
815	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
816	>	}});
817
818	+	awaitTermination(t);
819	+	assertTrue(lock.writeLock().isHeldByCurrentThread());
820	+	lock.writeLock().unlock();
821	+	}
822
823		/**
824	<	* write lockInterruptibly succeeds if lock free else is interruptible
824	>	* write lockInterruptibly succeeds if unlocked, else is interruptible
825		*/
826	<	public void testWriteLockInterruptibly() {
827	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
828	<	try {
829	<	lock.writeLock().lockInterruptibly();
830	<	} catch(Exception e) {
582	<	unexpectedException();
583	<	}
584	<	Thread t = new Thread(new Runnable() {
585	<	public void run() {
586	<	try {
587	<	lock.writeLock().lockInterruptibly();
588	<	threadShouldThrow();
589	<	}
590	<	catch(InterruptedException success) {
591	<	}
592	<	}
593	<	});
826	>	public void testWriteLockInterruptibly()      { testWriteLockInterruptibly(false); }
827	>	public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); }
828	>	public void testWriteLockInterruptibly(boolean fair) {
829	>	final PublicReentrantReadWriteLock lock =
830	>	new PublicReentrantReadWriteLock(fair);
831		try {
832	<	t.start();
833	<	t.interrupt();
834	<	t.join();
835	<	lock.writeLock().unlock();
836	<	} catch(Exception e){
837	<	unexpectedException();
838	<	}
832	>	lock.writeLock().lockInterruptibly();
833	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
834	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
835	>	public void realRun() throws InterruptedException {
836	>	lock.writeLock().lockInterruptibly();
837	>	}});
838	>
839	>	waitForQueuedThread(lock, t);
840	>	t.interrupt();
841	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
842	>	awaitTermination(t);
843	>	releaseWriteLock(lock);
844		}
845
846		/**
847	<	*  read lockInterruptibly succeeds if lock free else is interruptible
847	>	* read lockInterruptibly succeeds if lock free else is interruptible
848		*/
849	<	public void testReadLockInterruptibly() {
850	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
851	<	try {
852	<	lock.writeLock().lockInterruptibly();
853	<	} catch(Exception e) {
612	<	unexpectedException();
613	<	}
614	<	Thread t = new Thread(new Runnable() {
615	<	public void run() {
616	<	try {
617	<	lock.readLock().lockInterruptibly();
618	<	threadShouldThrow();
619	<	}
620	<	catch(InterruptedException success) {
621	<	}
622	<	}
623	<	});
849	>	public void testReadLockInterruptibly()      { testReadLockInterruptibly(false); }
850	>	public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); }
851	>	public void testReadLockInterruptibly(boolean fair) {
852	>	final PublicReentrantReadWriteLock lock =
853	>	new PublicReentrantReadWriteLock(fair);
854		try {
855	<	t.start();
856	<	t.interrupt();
857	<	t.join();
858	<	lock.writeLock().unlock();
859	<	} catch(Exception e){
860	<	unexpectedException();
861	<	}
855	>	lock.readLock().lockInterruptibly();
856	>	lock.readLock().unlock();
857	>	lock.writeLock().lockInterruptibly();
858	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
859	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
860	>	public void realRun() throws InterruptedException {
861	>	lock.readLock().lockInterruptibly();
862	>	}});
863	>
864	>	waitForQueuedThread(lock, t);
865	>	t.interrupt();
866	>	awaitTermination(t);
867	>	releaseWriteLock(lock);
868		}
869
870		/**
871		* Calling await without holding lock throws IllegalMonitorStateException
872		*/
873	<	public void testAwait_IllegalMonitor() {
874	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
873	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
874	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
875	>	public void testAwait_IMSE(boolean fair) {
876	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
877		final Condition c = lock.writeLock().newCondition();
878	<	try {
879	<	c.await();
880	<	shouldThrow();
881	<	}
882	<	catch (IllegalMonitorStateException success) {
883	<	}
884	<	catch (Exception ex) {
885	<	shouldThrow();
878	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
879	>	long startTime = System.nanoTime();
880	>	try {
881	>	await(c, awaitMethod);
882	>	shouldThrow();
883	>	} catch (IllegalMonitorStateException success) {
884	>	} catch (InterruptedException fail) {
885	>	threadUnexpectedException(fail);
886	>	}
887	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
888		}
889		}
890
891		/**
892		* Calling signal without holding lock throws IllegalMonitorStateException
893		*/
894	<	public void testSignal_IllegalMonitor() {
895	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
895	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
896	>	public void testSignal_IMSE(boolean fair) {
897	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
898		final Condition c = lock.writeLock().newCondition();
899		try {
900		c.signal();
901		shouldThrow();
902	<	}
661	<	catch (IllegalMonitorStateException success) {
662	<	}
663	<	catch (Exception ex) {
664	<	unexpectedException();
665	<	}
902	>	} catch (IllegalMonitorStateException success) {}
903		}
904
905		/**
906	<	* awaitNanos without a signal times out
906	>	* Calling signalAll without holding lock throws IllegalMonitorStateException
907		*/
908	<	public void testAwaitNanos_Timeout() {
909	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
908	>	public void testSignalAll_IMSE()      { testSignalAll_IMSE(false); }
909	>	public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); }
910	>	public void testSignalAll_IMSE(boolean fair) {
911	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
912		final Condition c = lock.writeLock().newCondition();
913		try {
914	+	c.signalAll();
915	+	shouldThrow();
916	+	} catch (IllegalMonitorStateException success) {}
917	+	}
918	+
919	+	/**
920	+	* awaitNanos without a signal times out
921	+	*/
922	+	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
923	+	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
924	+	public void testAwaitNanos_Timeout(boolean fair) {
925	+	try {
926	+	final ReentrantReadWriteLock lock =
927	+	new ReentrantReadWriteLock(fair);
928	+	final Condition c = lock.writeLock().newCondition();
929		lock.writeLock().lock();
930	<	long t = c.awaitNanos(100);
931	<	assertTrue(t <= 0);
930	>	long startTime = System.nanoTime();
931	>	long timeoutMillis = 10;
932	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
933	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
934	>	assertTrue(nanosRemaining <= 0);
935	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
936		lock.writeLock().unlock();
937	<	}
680	<	catch (Exception ex) {
681	<	unexpectedException();
682	<	}
937	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
938		}
939
685	–
940		/**
941	<	*  timed await without a signal times out
941	>	* timed await without a signal times out
942		*/
943	<	public void testAwait_Timeout() {
944	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
945	<	final Condition c = lock.writeLock().newCondition();
943	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
944	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
945	>	public void testAwait_Timeout(boolean fair) {
946		try {
947	+	final ReentrantReadWriteLock lock =
948	+	new ReentrantReadWriteLock(fair);
949	+	final Condition c = lock.writeLock().newCondition();
950		lock.writeLock().lock();
951	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
951	>	long startTime = System.nanoTime();
952	>	long timeoutMillis = 10;
953	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
954	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
955		lock.writeLock().unlock();
956	<	}
697	<	catch (Exception ex) {
698	<	unexpectedException();
699	<	}
956	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
957		}
958
959		/**
960		* awaitUntil without a signal times out
961		*/
962	<	public void testAwaitUntil_Timeout() {
963	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
964	<	final Condition c = lock.writeLock().newCondition();
965	<	try {
962	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
963	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
964	>	public void testAwaitUntil_Timeout(boolean fair) {
965	>	try {
966	>	final ReentrantReadWriteLock lock =
967	>	new ReentrantReadWriteLock(fair);
968	>	final Condition c = lock.writeLock().newCondition();
969		lock.writeLock().lock();
970	+	long startTime = System.nanoTime();
971	+	long timeoutMillis = 10;
972		java.util.Date d = new java.util.Date();
973	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
973	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
974	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
975		lock.writeLock().unlock();
976	<	}
714	<	catch (Exception ex) {
715	<	unexpectedException();
716	<	}
976	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
977		}
978
979		/**
980		* await returns when signalled
981		*/
982	<	public void testAwait() {
983	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
982	>	public void testAwait()      { testAwait(false); }
983	>	public void testAwait_fair() { testAwait(true); }
984	>	public void testAwait(boolean fair) {
985	>	final PublicReentrantReadWriteLock lock =
986	>	new PublicReentrantReadWriteLock(fair);
987		final Condition c = lock.writeLock().newCondition();
988	<	Thread t = new Thread(new Runnable() {
989	<	public void run() {
990	<	try {
991	<	lock.writeLock().lock();
992	<	c.await();
993	<	lock.writeLock().unlock();
994	<	}
995	<	catch(InterruptedException e) {
733	<	threadUnexpectedException();
734	<	}
735	<	}
736	<	});
988	>	final CountDownLatch locked = new CountDownLatch(1);
989	>	Thread t = newStartedThread(new CheckedRunnable() {
990	>	public void realRun() throws InterruptedException {
991	>	lock.writeLock().lock();
992	>	locked.countDown();
993	>	c.await();
994	>	lock.writeLock().unlock();
995	>	}});
996
997	<	try {
998	<	t.start();
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	lock.writeLock().lock();
1001	<	c.signal();
1002	<	lock.writeLock().unlock();
1003	<	t.join(SHORT_DELAY_MS);
1004	<	assertFalse(t.isAlive());
746	<	}
747	<	catch (Exception ex) {
748	<	unexpectedException();
749	<	}
997	>	await(locked);
998	>	lock.writeLock().lock();
999	>	assertHasWaiters(lock, c, t);
1000	>	c.signal();
1001	>	assertHasNoWaiters(lock, c);
1002	>	assertTrue(t.isAlive());
1003	>	lock.writeLock().unlock();
1004	>	awaitTermination(t);
1005		}
1006
1007		/**
1008	<	* awaitUninterruptibly doesn't abort on interrupt
1008	>	* awaitUninterruptibly is uninterruptible
1009		*/
1010	<	public void testAwaitUninterruptibly() {
1011	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1010	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
1011	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
1012	>	public void testAwaitUninterruptibly(boolean fair) {
1013	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1014		final Condition c = lock.writeLock().newCondition();
1015	<	Thread t = new Thread(new Runnable() {
759	<	public void run() {
760	<	lock.writeLock().lock();
761	<	c.awaitUninterruptibly();
762	<	lock.writeLock().unlock();
763	<	}
764	<	});
1015	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
1016
1017	<	try {
1018	<	t.start();
1019	<	Thread.sleep(SHORT_DELAY_MS);
1020	<	t.interrupt();
1021	<	lock.writeLock().lock();
1022	<	c.signal();
1023	<	lock.writeLock().unlock();
1024	<	assert(t.isInterrupted());
1025	<	t.join(SHORT_DELAY_MS);
1026	<	assertFalse(t.isAlive());
1027	<	}
1028	<	catch (Exception ex) {
1029	<	unexpectedException();
1030	<	}
1017	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1018	>	public void realRun() {
1019	>	// Interrupt before awaitUninterruptibly
1020	>	lock.writeLock().lock();
1021	>	pleaseInterrupt.countDown();
1022	>	Thread.currentThread().interrupt();
1023	>	c.awaitUninterruptibly();
1024	>	assertTrue(Thread.interrupted());
1025	>	lock.writeLock().unlock();
1026	>	}});
1027	>
1028	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1029	>	public void realRun() {
1030	>	// Interrupt during awaitUninterruptibly
1031	>	lock.writeLock().lock();
1032	>	pleaseInterrupt.countDown();
1033	>	c.awaitUninterruptibly();
1034	>	assertTrue(Thread.interrupted());
1035	>	lock.writeLock().unlock();
1036	>	}});
1037	>
1038	>	await(pleaseInterrupt);
1039	>	lock.writeLock().lock();
1040	>	lock.writeLock().unlock();
1041	>	t2.interrupt();
1042	>
1043	>	assertThreadStaysAlive(t1);
1044	>	assertTrue(t2.isAlive());
1045	>
1046	>	lock.writeLock().lock();
1047	>	c.signalAll();
1048	>	lock.writeLock().unlock();
1049	>
1050	>	awaitTermination(t1);
1051	>	awaitTermination(t2);
1052		}
1053
1054		/**
1055	<	* await is interruptible
1055	>	* await/awaitNanos/awaitUntil is interruptible
1056		*/
1057	<	public void testAwait_Interrupt() {
1058	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1057	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
1058	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
1059	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
1060	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
1061	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
1062	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
1063	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
1064	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
1065	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
1066	>	final PublicReentrantReadWriteLock lock =
1067	>	new PublicReentrantReadWriteLock(fair);
1068		final Condition c = lock.writeLock().newCondition();
1069	<	Thread t = new Thread(new Runnable() {
1070	<	public void run() {
1071	<	try {
1072	<	lock.writeLock().lock();
1073	<	c.await();
1074	<	lock.writeLock().unlock();
1075	<	threadShouldThrow();
1076	<	}
1077	<	catch(InterruptedException success) {
1078	<	}
1079	<	}
1080	<	});
1081	<
1082	<	try {
1083	<	t.start();
1084	<	Thread.sleep(SHORT_DELAY_MS);
1085	<	t.interrupt();
1086	<	t.join(SHORT_DELAY_MS);
1087	<	assertFalse(t.isAlive());
1088	<	}
1089	<	catch (Exception ex) {
1090	<	unexpectedException();
810	<	}
1069	>	final CountDownLatch locked = new CountDownLatch(1);
1070	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
1071	>	public void realRun() throws InterruptedException {
1072	>	lock.writeLock().lock();
1073	>	assertWriteLockedByMoi(lock);
1074	>	assertHasNoWaiters(lock, c);
1075	>	locked.countDown();
1076	>	try {
1077	>	await(c, awaitMethod);
1078	>	} finally {
1079	>	assertWriteLockedByMoi(lock);
1080	>	assertHasNoWaiters(lock, c);
1081	>	lock.writeLock().unlock();
1082	>	assertFalse(Thread.interrupted());
1083	>	}
1084	>	}});
1085	>
1086	>	await(locked);
1087	>	assertHasWaiters(lock, c, t);
1088	>	t.interrupt();
1089	>	awaitTermination(t);
1090	>	assertNotWriteLocked(lock);
1091		}
1092
1093		/**
1094	<	* awaitNanos is interruptible
1094	>	* signalAll wakes up all threads
1095		*/
1096	<	public void testAwaitNanos_Interrupt() {
1097	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1096	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
1097	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
1098	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
1099	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
1100	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
1101	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
1102	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
1103	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
1104	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
1105	>	final PublicReentrantReadWriteLock lock =
1106	>	new PublicReentrantReadWriteLock(fair);
1107		final Condition c = lock.writeLock().newCondition();
1108	<	Thread t = new Thread(new Runnable() {
1109	<	public void run() {
1110	<	try {
1111	<	lock.writeLock().lock();
1112	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
1113	<	lock.writeLock().unlock();
1114	<	threadShouldThrow();
1115	<	}
1116	<	catch(InterruptedException success) {
1117	<	}
1118	<	}
1119	<	});
1120	<
1121	<	try {
1122	<	t.start();
1123	<	Thread.sleep(SHORT_DELAY_MS);
1124	<	t.interrupt();
1125	<	t.join(SHORT_DELAY_MS);
1126	<	assertFalse(t.isAlive());
1127	<	}
1128	<	catch (Exception ex) {
1129	<	unexpectedException();
841	<	}
1108	>	final CountDownLatch locked = new CountDownLatch(2);
1109	>	final Lock writeLock = lock.writeLock();
1110	>	class Awaiter extends CheckedRunnable {
1111	>	public void realRun() throws InterruptedException {
1112	>	writeLock.lock();
1113	>	locked.countDown();
1114	>	await(c, awaitMethod);
1115	>	writeLock.unlock();
1116	>	}
1117	>	}
1118	>
1119	>	Thread t1 = newStartedThread(new Awaiter());
1120	>	Thread t2 = newStartedThread(new Awaiter());
1121	>
1122	>	await(locked);
1123	>	writeLock.lock();
1124	>	assertHasWaiters(lock, c, t1, t2);
1125	>	c.signalAll();
1126	>	assertHasNoWaiters(lock, c);
1127	>	writeLock.unlock();
1128	>	awaitTermination(t1);
1129	>	awaitTermination(t2);
1130		}
1131
1132		/**
1133	<	* awaitUntil is interruptible
1134	<	*/
1135	<	public void testAwaitUntil_Interrupt() {
1136	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1133	>	* signal wakes up waiting threads in FIFO order
1134	>	*/
1135	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1136	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1137	>	public void testSignalWakesFifo(boolean fair) {
1138	>	final PublicReentrantReadWriteLock lock =
1139	>	new PublicReentrantReadWriteLock(fair);
1140		final Condition c = lock.writeLock().newCondition();
1141	<	Thread t = new Thread(new Runnable() {
1142	<	public void run() {
1143	<	try {
1144	<	lock.writeLock().lock();
1145	<	java.util.Date d = new java.util.Date();
1146	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1147	<	lock.writeLock().unlock();
1148	<	threadShouldThrow();
1149	<	}
1150	<	catch(InterruptedException success) {
1151	<	}
1152	<	}
1153	<	});
1154	<
1155	<	try {
1156	<	t.start();
1157	<	Thread.sleep(SHORT_DELAY_MS);
1158	<	t.interrupt();
1159	<	t.join(SHORT_DELAY_MS);
1160	<	assertFalse(t.isAlive());
1161	<	}
1162	<	catch (Exception ex) {
1163	<	unexpectedException();
1164	<	}
1141	>	final CountDownLatch locked1 = new CountDownLatch(1);
1142	>	final CountDownLatch locked2 = new CountDownLatch(1);
1143	>	final Lock writeLock = lock.writeLock();
1144	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1145	>	public void realRun() throws InterruptedException {
1146	>	writeLock.lock();
1147	>	locked1.countDown();
1148	>	c.await();
1149	>	writeLock.unlock();
1150	>	}});
1151	>
1152	>	await(locked1);
1153	>
1154	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1155	>	public void realRun() throws InterruptedException {
1156	>	writeLock.lock();
1157	>	locked2.countDown();
1158	>	c.await();
1159	>	writeLock.unlock();
1160	>	}});
1161	>
1162	>	await(locked2);
1163	>
1164	>	writeLock.lock();
1165	>	assertHasWaiters(lock, c, t1, t2);
1166	>	assertFalse(lock.hasQueuedThreads());
1167	>	c.signal();
1168	>	assertHasWaiters(lock, c, t2);
1169	>	assertTrue(lock.hasQueuedThread(t1));
1170	>	assertFalse(lock.hasQueuedThread(t2));
1171	>	c.signal();
1172	>	assertHasNoWaiters(lock, c);
1173	>	assertTrue(lock.hasQueuedThread(t1));
1174	>	assertTrue(lock.hasQueuedThread(t2));
1175	>	writeLock.unlock();
1176	>	awaitTermination(t1);
1177	>	awaitTermination(t2);
1178		}
1179
1180		/**
1181	<	* signalAll wakes up all threads
1182	<	*/
1183	<	public void testSignalAll() {
1184	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1181	>	* await after multiple reentrant locking preserves lock count
1182	>	*/
1183	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1184	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1185	>	public void testAwaitLockCount(boolean fair) {
1186	>	final PublicReentrantReadWriteLock lock =
1187	>	new PublicReentrantReadWriteLock(fair);
1188		final Condition c = lock.writeLock().newCondition();
1189	<	Thread t1 = new Thread(new Runnable() {
1190	<	public void run() {
1191	<	try {
1192	<	lock.writeLock().lock();
1193	<	c.await();
1194	<	lock.writeLock().unlock();
1195	<	}
1196	<	catch(InterruptedException e) {
1197	<	threadUnexpectedException();
1198	<	}
1199	<	}
1200	<	});
1201	<
1202	<	Thread t2 = new Thread(new Runnable() {
1203	<	public void run() {
1204	<	try {
1205	<	lock.writeLock().lock();
1206	<	c.await();
1207	<	lock.writeLock().unlock();
1208	<	}
1209	<	catch(InterruptedException e) {
1210	<	threadUnexpectedException();
1211	<	}
1212	<	}
1213	<	});
1189	>	final CountDownLatch locked = new CountDownLatch(2);
1190	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1191	>	public void realRun() throws InterruptedException {
1192	>	lock.writeLock().lock();
1193	>	assertWriteLockedByMoi(lock);
1194	>	assertEquals(1, lock.writeLock().getHoldCount());
1195	>	locked.countDown();
1196	>	c.await();
1197	>	assertWriteLockedByMoi(lock);
1198	>	assertEquals(1, lock.writeLock().getHoldCount());
1199	>	lock.writeLock().unlock();
1200	>	}});
1201	>
1202	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1203	>	public void realRun() throws InterruptedException {
1204	>	lock.writeLock().lock();
1205	>	lock.writeLock().lock();
1206	>	assertWriteLockedByMoi(lock);
1207	>	assertEquals(2, lock.writeLock().getHoldCount());
1208	>	locked.countDown();
1209	>	c.await();
1210	>	assertWriteLockedByMoi(lock);
1211	>	assertEquals(2, lock.writeLock().getHoldCount());
1212	>	lock.writeLock().unlock();
1213	>	lock.writeLock().unlock();
1214	>	}});
1215
1216	<	try {
1217	<	t1.start();
1218	<	t2.start();
1219	<	Thread.sleep(SHORT_DELAY_MS);
1220	<	lock.writeLock().lock();
1221	<	c.signalAll();
1222	<	lock.writeLock().unlock();
1223	<	t1.join(SHORT_DELAY_MS);
916	<	t2.join(SHORT_DELAY_MS);
917	<	assertFalse(t1.isAlive());
918	<	assertFalse(t2.isAlive());
919	<	}
920	<	catch (Exception ex) {
921	<	unexpectedException();
922	<	}
1216	>	await(locked);
1217	>	lock.writeLock().lock();
1218	>	assertHasWaiters(lock, c, t1, t2);
1219	>	c.signalAll();
1220	>	assertHasNoWaiters(lock, c);
1221	>	lock.writeLock().unlock();
1222	>	awaitTermination(t1);
1223	>	awaitTermination(t2);
1224		}
1225
1226		/**
1227		* A serialized lock deserializes as unlocked
1228		*/
1229	<	public void testSerialization() {
1230	<	ReentrantReadWriteLock l = new ReentrantReadWriteLock();
1231	<	l.readLock().lock();
1232	<	l.readLock().unlock();
1229	>	public void testSerialization()      { testSerialization(false); }
1230	>	public void testSerialization_fair() { testSerialization(true); }
1231	>	public void testSerialization(boolean fair) {
1232	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1233	>	lock.writeLock().lock();
1234	>	lock.readLock().lock();
1235
1236	<	try {
1237	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1238	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1239	<	out.writeObject(l);
1240	<	out.close();
1241	<
1242	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1243	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1244	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
1245	<	r.readLock().lock();
1246	<	r.readLock().unlock();
1247	<	} catch(Exception e){
1248	<	e.printStackTrace();
1249	<	unexpectedException();
1250	<	}
1236	>	ReentrantReadWriteLock clone = serialClone(lock);
1237	>	assertEquals(lock.isFair(), clone.isFair());
1238	>	assertTrue(lock.isWriteLocked());
1239	>	assertFalse(clone.isWriteLocked());
1240	>	assertEquals(1, lock.getReadLockCount());
1241	>	assertEquals(0, clone.getReadLockCount());
1242	>	clone.writeLock().lock();
1243	>	clone.readLock().lock();
1244	>	assertTrue(clone.isWriteLocked());
1245	>	assertEquals(1, clone.getReadLockCount());
1246	>	clone.readLock().unlock();
1247	>	clone.writeLock().unlock();
1248	>	assertFalse(clone.isWriteLocked());
1249	>	assertEquals(1, lock.getReadLockCount());
1250	>	assertEquals(0, clone.getReadLockCount());
1251		}
1252
1253		/**
1254		* hasQueuedThreads reports whether there are waiting threads
1255		*/
1256	<	public void testhasQueuedThreads() {
1257	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1256	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
1257	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
1258	>	public void testHasQueuedThreads(boolean fair) {
1259	>	final PublicReentrantReadWriteLock lock =
1260	>	new PublicReentrantReadWriteLock(fair);
1261		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1262		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1263	<	try {
1264	<	assertFalse(lock.hasQueuedThreads());
1265	<	lock.writeLock().lock();
1266	<	t1.start();
1267	<	Thread.sleep(SHORT_DELAY_MS);
1268	<	assertTrue(lock.hasQueuedThreads());
1269	<	t2.start();
1270	<	Thread.sleep(SHORT_DELAY_MS);
1271	<	assertTrue(lock.hasQueuedThreads());
1272	<	t1.interrupt();
1273	<	Thread.sleep(SHORT_DELAY_MS);
1274	<	assertTrue(lock.hasQueuedThreads());
1275	<	lock.writeLock().unlock();
1276	<	Thread.sleep(SHORT_DELAY_MS);
1277	<	assertFalse(lock.hasQueuedThreads());
1278	<	t1.join();
973	<	t2.join();
974	<	} catch(Exception e){
975	<	unexpectedException();
976	<	}
977	<	}
1263	>	assertFalse(lock.hasQueuedThreads());
1264	>	lock.writeLock().lock();
1265	>	assertFalse(lock.hasQueuedThreads());
1266	>	t1.start();
1267	>	waitForQueuedThread(lock, t1);
1268	>	assertTrue(lock.hasQueuedThreads());
1269	>	t2.start();
1270	>	waitForQueuedThread(lock, t2);
1271	>	assertTrue(lock.hasQueuedThreads());
1272	>	t1.interrupt();
1273	>	awaitTermination(t1);
1274	>	assertTrue(lock.hasQueuedThreads());
1275	>	lock.writeLock().unlock();
1276	>	awaitTermination(t2);
1277	>	assertFalse(lock.hasQueuedThreads());
1278	>	}
1279
1280		/**
1281		* hasQueuedThread(null) throws NPE
1282		*/
1283	<	public void testHasQueuedThreadNPE() {
1284	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1283	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
1284	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
1285	>	public void testHasQueuedThreadNPE(boolean fair) {
1286	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1287		try {
1288	<	sync.hasQueuedThread(null);
1288	>	lock.hasQueuedThread(null);
1289		shouldThrow();
1290	<	} catch (NullPointerException success) {
988	<	}
1290	>	} catch (NullPointerException success) {}
1291		}
1292
1293		/**
1294	<	* hasQueuedThread reports whether a thread is queued.
1294	>	* hasQueuedThread reports whether a thread is queued
1295		*/
1296	<	public void testHasQueuedThread() {
1297	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1298	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1299	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1300	<	try {
1301	<	assertFalse(sync.hasQueuedThread(t1));
1302	<	assertFalse(sync.hasQueuedThread(t2));
1303	<	sync.writeLock().lock();
1304	<	t1.start();
1305	<	Thread.sleep(SHORT_DELAY_MS);
1306	<	assertTrue(sync.hasQueuedThread(t1));
1307	<	t2.start();
1308	<	Thread.sleep(SHORT_DELAY_MS);
1309	<	assertTrue(sync.hasQueuedThread(t1));
1310	<	assertTrue(sync.hasQueuedThread(t2));
1311	<	t1.interrupt();
1312	<	Thread.sleep(SHORT_DELAY_MS);
1313	<	assertFalse(sync.hasQueuedThread(t1));
1314	<	assertTrue(sync.hasQueuedThread(t2));
1315	<	sync.writeLock().unlock();
1316	<	Thread.sleep(SHORT_DELAY_MS);
1317	<	assertFalse(sync.hasQueuedThread(t1));
1318	<	Thread.sleep(SHORT_DELAY_MS);
1319	<	assertFalse(sync.hasQueuedThread(t2));
1320	<	t1.join();
1321	<	t2.join();
1322	<	} catch(Exception e){
1021	<	unexpectedException();
1022	<	}
1023	<	}
1024	<
1296	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
1297	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
1298	>	public void testHasQueuedThread(boolean fair) {
1299	>	final PublicReentrantReadWriteLock lock =
1300	>	new PublicReentrantReadWriteLock(fair);
1301	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1302	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1303	>	assertFalse(lock.hasQueuedThread(t1));
1304	>	assertFalse(lock.hasQueuedThread(t2));
1305	>	lock.writeLock().lock();
1306	>	t1.start();
1307	>	waitForQueuedThread(lock, t1);
1308	>	assertTrue(lock.hasQueuedThread(t1));
1309	>	assertFalse(lock.hasQueuedThread(t2));
1310	>	t2.start();
1311	>	waitForQueuedThread(lock, t2);
1312	>	assertTrue(lock.hasQueuedThread(t1));
1313	>	assertTrue(lock.hasQueuedThread(t2));
1314	>	t1.interrupt();
1315	>	awaitTermination(t1);
1316	>	assertFalse(lock.hasQueuedThread(t1));
1317	>	assertTrue(lock.hasQueuedThread(t2));
1318	>	lock.writeLock().unlock();
1319	>	awaitTermination(t2);
1320	>	assertFalse(lock.hasQueuedThread(t1));
1321	>	assertFalse(lock.hasQueuedThread(t2));
1322	>	}
1323
1324		/**
1325		* getQueueLength reports number of waiting threads
1326		*/
1327	<	public void testGetQueueLength() {
1328	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1327	>	public void testGetQueueLength()      { testGetQueueLength(false); }
1328	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
1329	>	public void testGetQueueLength(boolean fair) {
1330	>	final PublicReentrantReadWriteLock lock =
1331	>	new PublicReentrantReadWriteLock(fair);
1332		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1333		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1334	<	try {
1335	<	assertEquals(0, lock.getQueueLength());
1336	<	lock.writeLock().lock();
1337	<	t1.start();
1338	<	Thread.sleep(SHORT_DELAY_MS);
1339	<	assertEquals(1, lock.getQueueLength());
1340	<	t2.start();
1341	<	Thread.sleep(SHORT_DELAY_MS);
1342	<	assertEquals(2, lock.getQueueLength());
1343	<	t1.interrupt();
1344	<	Thread.sleep(SHORT_DELAY_MS);
1345	<	assertEquals(1, lock.getQueueLength());
1346	<	lock.writeLock().unlock();
1347	<	Thread.sleep(SHORT_DELAY_MS);
1348	<	assertEquals(0, lock.getQueueLength());
1048	<	t1.join();
1049	<	t2.join();
1050	<	} catch(Exception e){
1051	<	unexpectedException();
1052	<	}
1053	<	}
1334	>	assertEquals(0, lock.getQueueLength());
1335	>	lock.writeLock().lock();
1336	>	t1.start();
1337	>	waitForQueuedThread(lock, t1);
1338	>	assertEquals(1, lock.getQueueLength());
1339	>	t2.start();
1340	>	waitForQueuedThread(lock, t2);
1341	>	assertEquals(2, lock.getQueueLength());
1342	>	t1.interrupt();
1343	>	awaitTermination(t1);
1344	>	assertEquals(1, lock.getQueueLength());
1345	>	lock.writeLock().unlock();
1346	>	awaitTermination(t2);
1347	>	assertEquals(0, lock.getQueueLength());
1348	>	}
1349
1350		/**
1351		* getQueuedThreads includes waiting threads
1352		*/
1353	<	public void testGetQueuedThreads() {
1354	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1353	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
1354	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
1355	>	public void testGetQueuedThreads(boolean fair) {
1356	>	final PublicReentrantReadWriteLock lock =
1357	>	new PublicReentrantReadWriteLock(fair);
1358		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1359		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1360	<	try {
1361	<	assertTrue(lock.getQueuedThreads().isEmpty());
1362	<	lock.writeLock().lock();
1363	<	assertTrue(lock.getQueuedThreads().isEmpty());
1364	<	t1.start();
1365	<	Thread.sleep(SHORT_DELAY_MS);
1366	<	assertTrue(lock.getQueuedThreads().contains(t1));
1367	<	t2.start();
1368	<	Thread.sleep(SHORT_DELAY_MS);
1369	<	assertTrue(lock.getQueuedThreads().contains(t1));
1370	<	assertTrue(lock.getQueuedThreads().contains(t2));
1371	<	t1.interrupt();
1372	<	Thread.sleep(SHORT_DELAY_MS);
1373	<	assertFalse(lock.getQueuedThreads().contains(t1));
1374	<	assertTrue(lock.getQueuedThreads().contains(t2));
1375	<	lock.writeLock().unlock();
1376	<	Thread.sleep(SHORT_DELAY_MS);
1377	<	assertTrue(lock.getQueuedThreads().isEmpty());
1378	<	t1.join();
1379	<	t2.join();
1380	<	} catch(Exception e){
1083	<	unexpectedException();
1084	<	}
1085	<	}
1360	>	assertTrue(lock.getQueuedThreads().isEmpty());
1361	>	lock.writeLock().lock();
1362	>	assertTrue(lock.getQueuedThreads().isEmpty());
1363	>	t1.start();
1364	>	waitForQueuedThread(lock, t1);
1365	>	assertEquals(1, lock.getQueuedThreads().size());
1366	>	assertTrue(lock.getQueuedThreads().contains(t1));
1367	>	t2.start();
1368	>	waitForQueuedThread(lock, t2);
1369	>	assertEquals(2, lock.getQueuedThreads().size());
1370	>	assertTrue(lock.getQueuedThreads().contains(t1));
1371	>	assertTrue(lock.getQueuedThreads().contains(t2));
1372	>	t1.interrupt();
1373	>	awaitTermination(t1);
1374	>	assertFalse(lock.getQueuedThreads().contains(t1));
1375	>	assertTrue(lock.getQueuedThreads().contains(t2));
1376	>	assertEquals(1, lock.getQueuedThreads().size());
1377	>	lock.writeLock().unlock();
1378	>	awaitTermination(t2);
1379	>	assertTrue(lock.getQueuedThreads().isEmpty());
1380	>	}
1381
1382		/**
1383		* hasWaiters throws NPE if null
1384		*/
1385	<	public void testHasWaitersNPE() {
1386	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1385	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
1386	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
1387	>	public void testHasWaitersNPE(boolean fair) {
1388	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1389		try {
1390		lock.hasWaiters(null);
1391		shouldThrow();
1392	<	} catch (NullPointerException success) {
1096	<	} catch (Exception ex) {
1097	<	unexpectedException();
1098	<	}
1392	>	} catch (NullPointerException success) {}
1393		}
1394
1395		/**
1396		* getWaitQueueLength throws NPE if null
1397		*/
1398	<	public void testGetWaitQueueLengthNPE() {
1399	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1398	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
1399	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
1400	>	public void testGetWaitQueueLengthNPE(boolean fair) {
1401	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1402		try {
1403		lock.getWaitQueueLength(null);
1404		shouldThrow();
1405	<	} catch (NullPointerException success) {
1110	<	} catch (Exception ex) {
1111	<	unexpectedException();
1112	<	}
1405	>	} catch (NullPointerException success) {}
1406		}
1407
1115	–
1408		/**
1409		* getWaitingThreads throws NPE if null
1410		*/
1411	<	public void testGetWaitingThreadsNPE() {
1412	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1411	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
1412	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
1413	>	public void testGetWaitingThreadsNPE(boolean fair) {
1414	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair);
1415		try {
1416		lock.getWaitingThreads(null);
1417		shouldThrow();
1418	<	} catch (NullPointerException success) {
1125	<	} catch (Exception ex) {
1126	<	unexpectedException();
1127	<	}
1418	>	} catch (NullPointerException success) {}
1419		}
1420
1421		/**
1422	<	* hasWaiters throws IAE if not owned
1422	>	* hasWaiters throws IllegalArgumentException if not owned
1423		*/
1424	<	public void testHasWaitersIAE() {
1425	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1426	<	final Condition c = (lock.writeLock().newCondition());
1427	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1424	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
1425	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
1426	>	public void testHasWaitersIAE(boolean fair) {
1427	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1428	>	final Condition c = lock.writeLock().newCondition();
1429	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1430		try {
1431		lock2.hasWaiters(c);
1432		shouldThrow();
1433	<	} catch (IllegalArgumentException success) {
1141	<	} catch (Exception ex) {
1142	<	unexpectedException();
1143	<	}
1433	>	} catch (IllegalArgumentException success) {}
1434		}
1435
1436		/**
1437	<	* hasWaiters throws IMSE if not locked
1437	>	* hasWaiters throws IllegalMonitorStateException if not locked
1438		*/
1439	<	public void testHasWaitersIMSE() {
1440	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1441	<	final Condition c = (lock.writeLock().newCondition());
1439	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
1440	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
1441	>	public void testHasWaitersIMSE(boolean fair) {
1442	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1443	>	final Condition c = lock.writeLock().newCondition();
1444		try {
1445		lock.hasWaiters(c);
1446		shouldThrow();
1447	<	} catch (IllegalMonitorStateException success) {
1156	<	} catch (Exception ex) {
1157	<	unexpectedException();
1158	<	}
1447	>	} catch (IllegalMonitorStateException success) {}
1448		}
1449
1161	–
1450		/**
1451	<	* getWaitQueueLength throws IAE if not owned
1451	>	* getWaitQueueLength throws IllegalArgumentException if not owned
1452		*/
1453	<	public void testGetWaitQueueLengthIAE() {
1454	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1455	<	final Condition c = (lock.writeLock().newCondition());
1456	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1453	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
1454	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
1455	>	public void testGetWaitQueueLengthIAE(boolean fair) {
1456	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1457	>	final Condition c = lock.writeLock().newCondition();
1458	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair);
1459		try {
1460		lock2.getWaitQueueLength(c);
1461		shouldThrow();
1462	<	} catch (IllegalArgumentException success) {
1173	<	} catch (Exception ex) {
1174	<	unexpectedException();
1175	<	}
1462	>	} catch (IllegalArgumentException success) {}
1463		}
1464
1465		/**
1466	<	* getWaitQueueLength throws IMSE if not locked
1466	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
1467		*/
1468	<	public void testGetWaitQueueLengthIMSE() {
1469	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1470	<	final Condition c = (lock.writeLock().newCondition());
1468	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
1469	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
1470	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
1471	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1472	>	final Condition c = lock.writeLock().newCondition();
1473		try {
1474		lock.getWaitQueueLength(c);
1475		shouldThrow();
1476	<	} catch (IllegalMonitorStateException success) {
1188	<	} catch (Exception ex) {
1189	<	unexpectedException();
1190	<	}
1476	>	} catch (IllegalMonitorStateException success) {}
1477		}
1478
1193	–
1479		/**
1480	<	* getWaitingThreads throws IAE if not owned
1480	>	* getWaitingThreads throws IllegalArgumentException if not owned
1481		*/
1482	<	public void testGetWaitingThreadsIAE() {
1483	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1484	<	final Condition c = (lock.writeLock().newCondition());
1485	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1482	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
1483	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
1484	>	public void testGetWaitingThreadsIAE(boolean fair) {
1485	>	final PublicReentrantReadWriteLock lock =
1486	>	new PublicReentrantReadWriteLock(fair);
1487	>	final Condition c = lock.writeLock().newCondition();
1488	>	final PublicReentrantReadWriteLock lock2 =
1489	>	new PublicReentrantReadWriteLock(fair);
1490		try {
1491		lock2.getWaitingThreads(c);
1492		shouldThrow();
1493	<	} catch (IllegalArgumentException success) {
1205	<	} catch (Exception ex) {
1206	<	unexpectedException();
1207	<	}
1493	>	} catch (IllegalArgumentException success) {}
1494		}
1495
1496		/**
1497	<	* getWaitingThreads throws IMSE if not locked
1497	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
1498		*/
1499	<	public void testGetWaitingThreadsIMSE() {
1500	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1501	<	final Condition c = (lock.writeLock().newCondition());
1499	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
1500	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
1501	>	public void testGetWaitingThreadsIMSE(boolean fair) {
1502	>	final PublicReentrantReadWriteLock lock =
1503	>	new PublicReentrantReadWriteLock(fair);
1504	>	final Condition c = lock.writeLock().newCondition();
1505		try {
1506		lock.getWaitingThreads(c);
1507		shouldThrow();
1508	<	} catch (IllegalMonitorStateException success) {
1220	<	} catch (Exception ex) {
1221	<	unexpectedException();
1222	<	}
1508	>	} catch (IllegalMonitorStateException success) {}
1509		}
1510
1225	–
1511		/**
1512		* hasWaiters returns true when a thread is waiting, else false
1513		*/
1514	<	public void testHasWaiters() {
1515	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1516	<	final Condition c = (lock.writeLock().newCondition());
1517	<	Thread t = new Thread(new Runnable() {
1518	<	public void run() {
1519	<	try {
1520	<	lock.writeLock().lock();
1521	<	threadAssertFalse(lock.hasWaiters(c));
1522	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1523	<	c.await();
1524	<	lock.writeLock().unlock();
1525	<	}
1526	<	catch(InterruptedException e) {
1527	<	threadUnexpectedException();
1528	<	}
1529	<	}
1530	<	});
1514	>	public void testHasWaiters()      { testHasWaiters(false); }
1515	>	public void testHasWaiters_fair() { testHasWaiters(true); }
1516	>	public void testHasWaiters(boolean fair) {
1517	>	final PublicReentrantReadWriteLock lock =
1518	>	new PublicReentrantReadWriteLock(fair);
1519	>	final Condition c = lock.writeLock().newCondition();
1520	>	final CountDownLatch locked = new CountDownLatch(1);
1521	>	Thread t = newStartedThread(new CheckedRunnable() {
1522	>	public void realRun() throws InterruptedException {
1523	>	lock.writeLock().lock();
1524	>	assertHasNoWaiters(lock, c);
1525	>	assertFalse(lock.hasWaiters(c));
1526	>	locked.countDown();
1527	>	c.await();
1528	>	assertHasNoWaiters(lock, c);
1529	>	assertFalse(lock.hasWaiters(c));
1530	>	lock.writeLock().unlock();
1531	>	}});
1532
1533	<	try {
1534	<	t.start();
1535	<	Thread.sleep(SHORT_DELAY_MS);
1536	<	lock.writeLock().lock();
1537	<	assertTrue(lock.hasWaiters(c));
1538	<	assertEquals(1, lock.getWaitQueueLength(c));
1539	<	c.signal();
1540	<	lock.writeLock().unlock();
1541	<	Thread.sleep(SHORT_DELAY_MS);
1542	<	lock.writeLock().lock();
1257	<	assertFalse(lock.hasWaiters(c));
1258	<	assertEquals(0, lock.getWaitQueueLength(c));
1259	<	lock.writeLock().unlock();
1260	<	t.join(SHORT_DELAY_MS);
1261	<	assertFalse(t.isAlive());
1262	<	}
1263	<	catch (Exception ex) {
1264	<	unexpectedException();
1265	<	}
1533	>	await(locked);
1534	>	lock.writeLock().lock();
1535	>	assertHasWaiters(lock, c, t);
1536	>	assertTrue(lock.hasWaiters(c));
1537	>	c.signal();
1538	>	assertHasNoWaiters(lock, c);
1539	>	assertFalse(lock.hasWaiters(c));
1540	>	lock.writeLock().unlock();
1541	>	awaitTermination(t);
1542	>	assertHasNoWaiters(lock, c);
1543		}
1544
1545		/**
1546		* getWaitQueueLength returns number of waiting threads
1547		*/
1548	<	public void testGetWaitQueueLength() {
1549	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1550	<	final Condition c = (lock.writeLock().newCondition());
1551	<	Thread t = new Thread(new Runnable() {
1552	<	public void run() {
1553	<	try {
1554	<	lock.writeLock().lock();
1555	<	threadAssertFalse(lock.hasWaiters(c));
1556	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1557	<	c.await();
1558	<	lock.writeLock().unlock();
1559	<	}
1560	<	catch(InterruptedException e) {
1561	<	threadUnexpectedException();
1562	<	}
1286	<	}
1287	<	});
1548	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
1549	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
1550	>	public void testGetWaitQueueLength(boolean fair) {
1551	>	final PublicReentrantReadWriteLock lock =
1552	>	new PublicReentrantReadWriteLock(fair);
1553	>	final Condition c = lock.writeLock().newCondition();
1554	>	final CountDownLatch locked = new CountDownLatch(1);
1555	>	Thread t = newStartedThread(new CheckedRunnable() {
1556	>	public void realRun() throws InterruptedException {
1557	>	lock.writeLock().lock();
1558	>	assertEquals(0, lock.getWaitQueueLength(c));
1559	>	locked.countDown();
1560	>	c.await();
1561	>	lock.writeLock().unlock();
1562	>	}});
1563
1564	<	try {
1565	<	t.start();
1566	<	Thread.sleep(SHORT_DELAY_MS);
1567	<	lock.writeLock().lock();
1568	<	assertTrue(lock.hasWaiters(c));
1569	<	assertEquals(1, lock.getWaitQueueLength(c));
1570	<	c.signal();
1571	<	lock.writeLock().unlock();
1572	<	Thread.sleep(SHORT_DELAY_MS);
1298	<	lock.writeLock().lock();
1299	<	assertFalse(lock.hasWaiters(c));
1300	<	assertEquals(0, lock.getWaitQueueLength(c));
1301	<	lock.writeLock().unlock();
1302	<	t.join(SHORT_DELAY_MS);
1303	<	assertFalse(t.isAlive());
1304	<	}
1305	<	catch (Exception ex) {
1306	<	unexpectedException();
1307	<	}
1564	>	await(locked);
1565	>	lock.writeLock().lock();
1566	>	assertHasWaiters(lock, c, t);
1567	>	assertEquals(1, lock.getWaitQueueLength(c));
1568	>	c.signal();
1569	>	assertHasNoWaiters(lock, c);
1570	>	assertEquals(0, lock.getWaitQueueLength(c));
1571	>	lock.writeLock().unlock();
1572	>	awaitTermination(t);
1573		}
1574
1310	–
1575		/**
1576		* getWaitingThreads returns only and all waiting threads
1577		*/
1578	<	public void testGetWaitingThreads() {
1579	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1578	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
1579	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
1580	>	public void testGetWaitingThreads(boolean fair) {
1581	>	final PublicReentrantReadWriteLock lock =
1582	>	new PublicReentrantReadWriteLock(fair);
1583		final Condition c = lock.writeLock().newCondition();
1584	<	Thread t1 = new Thread(new Runnable() {
1585	<	public void run() {
1586	<	try {
1587	<	lock.writeLock().lock();
1588	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1589	<	c.await();
1590	<	lock.writeLock().unlock();
1591	<	}
1592	<	catch(InterruptedException e) {
1593	<	threadUnexpectedException();
1594	<	}
1595	<	}
1596	<	});
1597	<
1598	<	Thread t2 = new Thread(new Runnable() {
1599	<	public void run() {
1600	<	try {
1601	<	lock.writeLock().lock();
1602	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1336	<	c.await();
1337	<	lock.writeLock().unlock();
1338	<	}
1339	<	catch(InterruptedException e) {
1340	<	threadUnexpectedException();
1341	<	}
1342	<	}
1343	<	});
1584	>	final CountDownLatch locked1 = new CountDownLatch(1);
1585	>	final CountDownLatch locked2 = new CountDownLatch(1);
1586	>	Thread t1 = new Thread(new CheckedRunnable() {
1587	>	public void realRun() throws InterruptedException {
1588	>	lock.writeLock().lock();
1589	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1590	>	locked1.countDown();
1591	>	c.await();
1592	>	lock.writeLock().unlock();
1593	>	}});
1594	>
1595	>	Thread t2 = new Thread(new CheckedRunnable() {
1596	>	public void realRun() throws InterruptedException {
1597	>	lock.writeLock().lock();
1598	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1599	>	locked2.countDown();
1600	>	c.await();
1601	>	lock.writeLock().unlock();
1602	>	}});
1603
1604	<	try {
1605	<	lock.writeLock().lock();
1606	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1607	<	lock.writeLock().unlock();
1608	<	t1.start();
1609	<	Thread.sleep(SHORT_DELAY_MS);
1610	<	t2.start();
1611	<	Thread.sleep(SHORT_DELAY_MS);
1612	<	lock.writeLock().lock();
1613	<	assertTrue(lock.hasWaiters(c));
1614	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1615	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1616	<	c.signalAll();
1617	<	lock.writeLock().unlock();
1618	<	Thread.sleep(SHORT_DELAY_MS);
1619	<	lock.writeLock().lock();
1620	<	assertFalse(lock.hasWaiters(c));
1621	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1622	<	lock.writeLock().unlock();
1623	<	t1.join(SHORT_DELAY_MS);
1624	<	t2.join(SHORT_DELAY_MS);
1625	<	assertFalse(t1.isAlive());
1367	<	assertFalse(t2.isAlive());
1368	<	}
1369	<	catch (Exception ex) {
1370	<	unexpectedException();
1371	<	}
1604	>	lock.writeLock().lock();
1605	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1606	>	lock.writeLock().unlock();
1607	>
1608	>	t1.start();
1609	>	await(locked1);
1610	>	t2.start();
1611	>	await(locked2);
1612	>
1613	>	lock.writeLock().lock();
1614	>	assertTrue(lock.hasWaiters(c));
1615	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1616	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1617	>	assertEquals(2, lock.getWaitingThreads(c).size());
1618	>	c.signalAll();
1619	>	assertHasNoWaiters(lock, c);
1620	>	lock.writeLock().unlock();
1621	>
1622	>	awaitTermination(t1);
1623	>	awaitTermination(t2);
1624	>
1625	>	assertHasNoWaiters(lock, c);
1626		}
1627
1628		/**
1629		* toString indicates current lock state
1630		*/
1631	<	public void testToString() {
1632	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1633	<	String us = lock.toString();
1634	<	assertTrue(us.indexOf("Write locks = 0") >= 0);
1635	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1636	<	lock.writeLock().lock();
1637	<	String ws = lock.toString();
1638	<	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1639	<	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1631	>	public void testToString()      { testToString(false); }
1632	>	public void testToString_fair() { testToString(true); }
1633	>	public void testToString(boolean fair) {
1634	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1635	>	assertTrue(lock.toString().contains("Write locks = 0"));
1636	>	assertTrue(lock.toString().contains("Read locks = 0"));
1637	>	lock.writeLock().lock();
1638	>	assertTrue(lock.toString().contains("Write locks = 1"));
1639	>	assertTrue(lock.toString().contains("Read locks = 0"));
1640		lock.writeLock().unlock();
1641		lock.readLock().lock();
1642		lock.readLock().lock();
1643	<	String rs = lock.toString();
1644	<	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1391	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1643	>	assertTrue(lock.toString().contains("Write locks = 0"));
1644	>	assertTrue(lock.toString().contains("Read locks = 2"));
1645		}
1646
1647		/**
1648		* readLock.toString indicates current lock state
1649		*/
1650	<	public void testReadLockToString() {
1651	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1652	<	String us = lock.readLock().toString();
1653	<	assertTrue(us.indexOf("Read locks = 0") >= 0);
1650	>	public void testReadLockToString()      { testReadLockToString(false); }
1651	>	public void testReadLockToString_fair() { testReadLockToString(true); }
1652	>	public void testReadLockToString(boolean fair) {
1653	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1654	>	assertTrue(lock.readLock().toString().contains("Read locks = 0"));
1655		lock.readLock().lock();
1656		lock.readLock().lock();
1657	<	String rs = lock.readLock().toString();
1404	<	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1657	>	assertTrue(lock.readLock().toString().contains("Read locks = 2"));
1658		}
1659
1660		/**
1661		* writeLock.toString indicates current lock state
1662		*/
1663	<	public void testWriteLockToString() {
1664	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1665	<	String us = lock.writeLock().toString();
1666	<	assertTrue(us.indexOf("Unlocked") >= 0);
1663	>	public void testWriteLockToString()      { testWriteLockToString(false); }
1664	>	public void testWriteLockToString_fair() { testWriteLockToString(true); }
1665	>	public void testWriteLockToString(boolean fair) {
1666	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair);
1667	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1668		lock.writeLock().lock();
1669	<	String ls = lock.writeLock().toString();
1670	<	assertTrue(ls.indexOf("Locked") >= 0);
1669	>	assertTrue(lock.writeLock().toString().contains("Locked"));
1670	>	lock.writeLock().unlock();
1671	>	assertTrue(lock.writeLock().toString().contains("Unlocked"));
1672		}
1673
1674		}

Diff Legend

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