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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.20 by dl, Sun Dec 5 21:56:41 2004 UTC vs.
Revision 1.49 by jsr166, Tue May 24 23:40:14 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.util.*;
14		import java.io.*;
15
16		public class ReentrantLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantLockTest.class);
21	>	return new TestSuite(ReentrantLockTest.class);
22		}
23
24		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantLock lock;
29		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
30	<	public void run() {
31	<	try {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.lockInterruptibly();
32		}
33		}
34
36	–
35		/**
36		* A runnable calling lockInterruptibly that expects to be
37		* interrupted
38		*/
39	<	class InterruptedLockRunnable implements Runnable {
39	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
40		final ReentrantLock lock;
41		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
42	<	public void run() {
43	<	try {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
42	>	public void realRun() throws InterruptedException {
43	>	lock.lockInterruptibly();
44		}
45		}
46
#	Line 54 | Line 49 | public class ReentrantLockTest extends J
49		*/
50		static class PublicReentrantLock extends ReentrantLock {
51		PublicReentrantLock() { super(); }
52	<	public Collection<Thread> getQueuedThreads() {
53	<	return super.getQueuedThreads();
52	>	PublicReentrantLock(boolean fair) { super(fair); }
53	>	public Thread getOwner() {
54	>	return super.getOwner();
55		}
56	<	public Collection<Thread> getWaitingThreads(Condition c) {
57	<	return super.getWaitingThreads(c);
56	>	public Collection<Thread> getQueuedThreads() {
57	>	return super.getQueuedThreads();
58		}
59	+	public Collection<Thread> getWaitingThreads(Condition c) {
60	+	return super.getWaitingThreads(c);
61	+	}
62	+	}
63
64	+	/**
65	+	* Releases write lock, checking that it had a hold count of 1.
66	+	*/
67	+	void releaseLock(PublicReentrantLock lock) {
68	+	assertLockedByMoi(lock);
69	+	lock.unlock();
70	+	assertFalse(lock.isHeldByCurrentThread());
71	+	assertNotLocked(lock);
72	+	}
73
74	+	/**
75	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
76	+	*/
77	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
78	+	long startTime = System.nanoTime();
79	+	while (!lock.hasQueuedThread(t)) {
80	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
81	+	throw new AssertionFailedError("timed out");
82	+	Thread.yield();
83	+	}
84	+	assertTrue(t.isAlive());
85	+	assertTrue(lock.getOwner() != t);
86		}
87
88		/**
89	<	* Constructor sets given fairness
89	>	* Checks that lock is not locked.
90		*/
91	<	public void testConstructor() {
92	<	ReentrantLock rl = new ReentrantLock();
93	<	assertFalse(rl.isFair());
94	<	ReentrantLock r2 = new ReentrantLock(true);
95	<	assertTrue(r2.isFair());
91	>	void assertNotLocked(PublicReentrantLock lock) {
92	>	assertFalse(lock.isLocked());
93	>	assertFalse(lock.isHeldByCurrentThread());
94	>	assertNull(lock.getOwner());
95	>	assertEquals(0, lock.getHoldCount());
96		}
97
98		/**
99	<	* locking an unlocked lock succeeds
99	>	* Checks that lock is locked by the given thread.
100		*/
101	<	public void testLock() {
102	<	ReentrantLock rl = new ReentrantLock();
103	<	rl.lock();
104	<	assertTrue(rl.isLocked());
105	<	rl.unlock();
101	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
102	>	assertTrue(lock.isLocked());
103	>	assertSame(t, lock.getOwner());
104	>	assertEquals(t == Thread.currentThread(),
105	>	lock.isHeldByCurrentThread());
106	>	assertEquals(t == Thread.currentThread(),
107	>	lock.getHoldCount() > 0);
108		}
109
110		/**
111	<	* locking an unlocked fair lock succeeds
111	>	* Checks that lock is locked by the current thread.
112		*/
113	<	public void testFairLock() {
114	<	ReentrantLock rl = new ReentrantLock(true);
92	<	rl.lock();
93	<	assertTrue(rl.isLocked());
94	<	rl.unlock();
113	>	void assertLockedByMoi(PublicReentrantLock lock) {
114	>	assertLockedBy(lock, Thread.currentThread());
115		}
116
117		/**
118	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
118	>	* Checks that condition c has no waiters.
119		*/
120	<	public void testUnlock_IllegalMonitorStateException() {
121	<	ReentrantLock rl = new ReentrantLock();
122	<	try {
103	<	rl.unlock();
104	<	shouldThrow();
120	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
121	>	assertHasWaiters(lock, c, new Thread[] {});
122	>	}
123
124	<	} catch(IllegalMonitorStateException success){}
124	>	/**
125	>	* Checks that condition c has exactly the given waiter threads.
126	>	*/
127	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
128	>	Thread... threads) {
129	>	lock.lock();
130	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
131	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
132	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
133	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
134	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
135	>	new HashSet<Thread>(Arrays.asList(threads)));
136	>	lock.unlock();
137		}
138
139	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
140	+
141		/**
142	<	* tryLock on an unlocked lock succeeds
142	>	* Awaits condition using the specified AwaitMethod.
143		*/
144	<	public void testTryLock() {
145	<	ReentrantLock rl = new ReentrantLock();
146	<	assertTrue(rl.tryLock());
147	<	assertTrue(rl.isLocked());
148	<	rl.unlock();
144	>	void await(Condition c, AwaitMethod awaitMethod)
145	>	throws InterruptedException {
146	>	long timeoutMillis = 2 * LONG_DELAY_MS;
147	>	switch (awaitMethod) {
148	>	case await:
149	>	c.await();
150	>	break;
151	>	case awaitTimed:
152	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
153	>	break;
154	>	case awaitNanos:
155	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
156	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
157	>	assertTrue(nanosRemaining > 0);
158	>	break;
159	>	case awaitUntil:
160	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
161	>	break;
162	>	}
163		}
164
165	+	/**
166	+	* Constructor sets given fairness, and is in unlocked state
167	+	*/
168	+	public void testConstructor() {
169	+	PublicReentrantLock lock;
170	+
171	+	lock = new PublicReentrantLock();
172	+	assertFalse(lock.isFair());
173	+	assertNotLocked(lock);
174	+
175	+	lock = new PublicReentrantLock(true);
176	+	assertTrue(lock.isFair());
177	+	assertNotLocked(lock);
178	+
179	+	lock = new PublicReentrantLock(false);
180	+	assertFalse(lock.isFair());
181	+	assertNotLocked(lock);
182	+	}
183
184		/**
185	<	* hasQueuedThreads reports whether there are waiting threads
185	>	* locking an unlocked lock succeeds
186		*/
187	<	public void testhasQueuedThreads() {
188	<	final ReentrantLock lock = new ReentrantLock();
189	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
190	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
187	>	public void testLock()      { testLock(false); }
188	>	public void testLock_fair() { testLock(true); }
189	>	public void testLock(boolean fair) {
190	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
191	>	lock.lock();
192	>	assertLockedByMoi(lock);
193	>	releaseLock(lock);
194	>	}
195	>
196	>	/**
197	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
198	>	*/
199	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
200	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
201	>	public void testUnlock_IMSE(boolean fair) {
202	>	ReentrantLock lock = new ReentrantLock(fair);
203		try {
128	–	assertFalse(lock.hasQueuedThreads());
129	–	lock.lock();
130	–	t1.start();
131	–	Thread.sleep(SHORT_DELAY_MS);
132	–	assertTrue(lock.hasQueuedThreads());
133	–	t2.start();
134	–	Thread.sleep(SHORT_DELAY_MS);
135	–	assertTrue(lock.hasQueuedThreads());
136	–	t1.interrupt();
137	–	Thread.sleep(SHORT_DELAY_MS);
138	–	assertTrue(lock.hasQueuedThreads());
204		lock.unlock();
205	<	Thread.sleep(SHORT_DELAY_MS);
206	<	assertFalse(lock.hasQueuedThreads());
207	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
205	>	shouldThrow();
206	>	} catch (IllegalMonitorStateException success) {}
207	>	}
208
209		/**
210	<	* getQueueLength reports number of waiting threads
210	>	* tryLock on an unlocked lock succeeds
211		*/
212	<	public void testGetQueueLength() {
213	<	final ReentrantLock lock = new ReentrantLock();
212	>	public void testTryLock()      { testTryLock(false); }
213	>	public void testTryLock_fair() { testTryLock(true); }
214	>	public void testTryLock(boolean fair) {
215	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
216	>	assertTrue(lock.tryLock());
217	>	assertLockedByMoi(lock);
218	>	assertTrue(lock.tryLock());
219	>	assertLockedByMoi(lock);
220	>	lock.unlock();
221	>	releaseLock(lock);
222	>	}
223	>
224	>	/**
225	>	* hasQueuedThreads reports whether there are waiting threads
226	>	*/
227	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
228	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
229	>	public void testHasQueuedThreads(boolean fair) {
230	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
231		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
232		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
233	<	try {
234	<	assertEquals(0, lock.getQueueLength());
235	<	lock.lock();
236	<	t1.start();
237	<	Thread.sleep(SHORT_DELAY_MS);
238	<	assertEquals(1, lock.getQueueLength());
239	<	t2.start();
240	<	Thread.sleep(SHORT_DELAY_MS);
241	<	assertEquals(2, lock.getQueueLength());
242	<	t1.interrupt();
243	<	Thread.sleep(SHORT_DELAY_MS);
244	<	assertEquals(1, lock.getQueueLength());
245	<	lock.unlock();
246	<	Thread.sleep(SHORT_DELAY_MS);
247	<	assertEquals(0, lock.getQueueLength());
248	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
233	>	assertFalse(lock.hasQueuedThreads());
234	>	lock.lock();
235	>	assertFalse(lock.hasQueuedThreads());
236	>	t1.start();
237	>	waitForQueuedThread(lock, t1);
238	>	assertTrue(lock.hasQueuedThreads());
239	>	t2.start();
240	>	waitForQueuedThread(lock, t2);
241	>	assertTrue(lock.hasQueuedThreads());
242	>	t1.interrupt();
243	>	awaitTermination(t1);
244	>	assertTrue(lock.hasQueuedThreads());
245	>	lock.unlock();
246	>	awaitTermination(t2);
247	>	assertFalse(lock.hasQueuedThreads());
248	>	}
249
250		/**
251		* getQueueLength reports number of waiting threads
252		*/
253	<	public void testGetQueueLength_fair() {
254	<	final ReentrantLock lock = new ReentrantLock(true);
253	>	public void testGetQueueLength()      { testGetQueueLength(false); }
254	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
255	>	public void testGetQueueLength(boolean fair) {
256	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
257		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
258		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
259	<	try {
260	<	assertEquals(0, lock.getQueueLength());
261	<	lock.lock();
262	<	t1.start();
263	<	Thread.sleep(SHORT_DELAY_MS);
264	<	assertEquals(1, lock.getQueueLength());
265	<	t2.start();
266	<	Thread.sleep(SHORT_DELAY_MS);
267	<	assertEquals(2, lock.getQueueLength());
268	<	t1.interrupt();
269	<	Thread.sleep(SHORT_DELAY_MS);
270	<	assertEquals(1, lock.getQueueLength());
271	<	lock.unlock();
272	<	Thread.sleep(SHORT_DELAY_MS);
273	<	assertEquals(0, lock.getQueueLength());
200	<	t1.join();
201	<	t2.join();
202	<	} catch(Exception e){
203	<	unexpectedException();
204	<	}
205	<	}
259	>	assertEquals(0, lock.getQueueLength());
260	>	lock.lock();
261	>	t1.start();
262	>	waitForQueuedThread(lock, t1);
263	>	assertEquals(1, lock.getQueueLength());
264	>	t2.start();
265	>	waitForQueuedThread(lock, t2);
266	>	assertEquals(2, lock.getQueueLength());
267	>	t1.interrupt();
268	>	awaitTermination(t1);
269	>	assertEquals(1, lock.getQueueLength());
270	>	lock.unlock();
271	>	awaitTermination(t2);
272	>	assertEquals(0, lock.getQueueLength());
273	>	}
274
275		/**
276		* hasQueuedThread(null) throws NPE
277		*/
278	<	public void testHasQueuedThreadNPE() {
279	<	final ReentrantLock sync = new ReentrantLock();
278	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
279	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
280	>	public void testHasQueuedThreadNPE(boolean fair) {
281	>	final ReentrantLock lock = new ReentrantLock(fair);
282		try {
283	<	sync.hasQueuedThread(null);
283	>	lock.hasQueuedThread(null);
284		shouldThrow();
285	<	} catch (NullPointerException success) {
216	<	}
285	>	} catch (NullPointerException success) {}
286		}
287
288		/**
289	<	* hasQueuedThread reports whether a thread is queued.
289	>	* hasQueuedThread reports whether a thread is queued
290		*/
291	<	public void testHasQueuedThread() {
292	<	final ReentrantLock sync = new ReentrantLock();
293	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
294	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
295	<	try {
296	<	assertFalse(sync.hasQueuedThread(t1));
297	<	assertFalse(sync.hasQueuedThread(t2));
298	<	sync.lock();
299	<	t1.start();
300	<	Thread.sleep(SHORT_DELAY_MS);
301	<	assertTrue(sync.hasQueuedThread(t1));
302	<	t2.start();
303	<	Thread.sleep(SHORT_DELAY_MS);
304	<	assertTrue(sync.hasQueuedThread(t1));
305	<	assertTrue(sync.hasQueuedThread(t2));
306	<	t1.interrupt();
307	<	Thread.sleep(SHORT_DELAY_MS);
308	<	assertFalse(sync.hasQueuedThread(t1));
309	<	assertTrue(sync.hasQueuedThread(t2));
310	<	sync.unlock();
311	<	Thread.sleep(SHORT_DELAY_MS);
312	<	assertFalse(sync.hasQueuedThread(t1));
313	<	Thread.sleep(SHORT_DELAY_MS);
314	<	assertFalse(sync.hasQueuedThread(t2));
315	<	t1.join();
316	<	t2.join();
248	<	} catch(Exception e){
249	<	unexpectedException();
250	<	}
251	<	}
252	<
291	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
292	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
293	>	public void testHasQueuedThread(boolean fair) {
294	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
295	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
296	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
297	>	assertFalse(lock.hasQueuedThread(t1));
298	>	assertFalse(lock.hasQueuedThread(t2));
299	>	lock.lock();
300	>	t1.start();
301	>	waitForQueuedThread(lock, t1);
302	>	assertTrue(lock.hasQueuedThread(t1));
303	>	assertFalse(lock.hasQueuedThread(t2));
304	>	t2.start();
305	>	waitForQueuedThread(lock, t2);
306	>	assertTrue(lock.hasQueuedThread(t1));
307	>	assertTrue(lock.hasQueuedThread(t2));
308	>	t1.interrupt();
309	>	awaitTermination(t1);
310	>	assertFalse(lock.hasQueuedThread(t1));
311	>	assertTrue(lock.hasQueuedThread(t2));
312	>	lock.unlock();
313	>	awaitTermination(t2);
314	>	assertFalse(lock.hasQueuedThread(t1));
315	>	assertFalse(lock.hasQueuedThread(t2));
316	>	}
317
318		/**
319		* getQueuedThreads includes waiting threads
320		*/
321	<	public void testGetQueuedThreads() {
322	<	final PublicReentrantLock lock = new PublicReentrantLock();
321	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
322	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
323	>	public void testGetQueuedThreads(boolean fair) {
324	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
325		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
326		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
327	<	try {
328	<	assertTrue(lock.getQueuedThreads().isEmpty());
329	<	lock.lock();
330	<	assertTrue(lock.getQueuedThreads().isEmpty());
331	<	t1.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
333	<	assertTrue(lock.getQueuedThreads().contains(t1));
334	<	t2.start();
335	<	Thread.sleep(SHORT_DELAY_MS);
336	<	assertTrue(lock.getQueuedThreads().contains(t1));
337	<	assertTrue(lock.getQueuedThreads().contains(t2));
338	<	t1.interrupt();
339	<	Thread.sleep(SHORT_DELAY_MS);
340	<	assertFalse(lock.getQueuedThreads().contains(t1));
341	<	assertTrue(lock.getQueuedThreads().contains(t2));
342	<	lock.unlock();
343	<	Thread.sleep(SHORT_DELAY_MS);
344	<	assertTrue(lock.getQueuedThreads().isEmpty());
345	<	t1.join();
346	<	t2.join();
347	<	} catch(Exception e){
282	<	unexpectedException();
283	<	}
284	<	}
285	<
327	>	assertTrue(lock.getQueuedThreads().isEmpty());
328	>	lock.lock();
329	>	assertTrue(lock.getQueuedThreads().isEmpty());
330	>	t1.start();
331	>	waitForQueuedThread(lock, t1);
332	>	assertEquals(1, lock.getQueuedThreads().size());
333	>	assertTrue(lock.getQueuedThreads().contains(t1));
334	>	t2.start();
335	>	waitForQueuedThread(lock, t2);
336	>	assertEquals(2, lock.getQueuedThreads().size());
337	>	assertTrue(lock.getQueuedThreads().contains(t1));
338	>	assertTrue(lock.getQueuedThreads().contains(t2));
339	>	t1.interrupt();
340	>	awaitTermination(t1);
341	>	assertFalse(lock.getQueuedThreads().contains(t1));
342	>	assertTrue(lock.getQueuedThreads().contains(t2));
343	>	assertEquals(1, lock.getQueuedThreads().size());
344	>	lock.unlock();
345	>	awaitTermination(t2);
346	>	assertTrue(lock.getQueuedThreads().isEmpty());
347	>	}
348
349		/**
350	<	* timed tryLock is interruptible.
351	<	*/
352	<	public void testInterruptedException2() {
353	<	final ReentrantLock lock = new ReentrantLock();
354	<	lock.lock();
355	<	Thread t = new Thread(new Runnable() {
356	<	public void run() {
357	<	try {
358	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
359	<	threadShouldThrow();
360	<	} catch(InterruptedException success){}
299	<	}
300	<	});
301	<	try {
302	<	t.start();
303	<	t.interrupt();
304	<	} catch(Exception e){
305	<	unexpectedException();
306	<	}
307	<	}
350	>	* timed tryLock is interruptible
351	>	*/
352	>	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
353	>	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
354	>	public void testTryLock_Interruptible(boolean fair) {
355	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
356	>	lock.lock();
357	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
358	>	public void realRun() throws InterruptedException {
359	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
360	>	}});
361
362	+	waitForQueuedThread(lock, t);
363	+	t.interrupt();
364	+	awaitTermination(t);
365	+	releaseLock(lock);
366	+	}
367
368		/**
369	<	* TryLock on a locked lock fails
369	>	* tryLock on a locked lock fails
370		*/
371	<	public void testTryLockWhenLocked() {
372	<	final ReentrantLock lock = new ReentrantLock();
373	<	lock.lock();
374	<	Thread t = new Thread(new Runnable() {
375	<	public void run() {
376	<	threadAssertFalse(lock.tryLock());
377	<	}
378	<	});
379	<	try {
380	<	t.start();
381	<	t.join();
382	<	lock.unlock();
383	<	} catch(Exception e){
326	<	unexpectedException();
327	<	}
328	<	}
371	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
372	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
373	>	public void testTryLockWhenLocked(boolean fair) {
374	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
375	>	lock.lock();
376	>	Thread t = newStartedThread(new CheckedRunnable() {
377	>	public void realRun() {
378	>	assertFalse(lock.tryLock());
379	>	}});
380	>
381	>	awaitTermination(t);
382	>	releaseLock(lock);
383	>	}
384
385		/**
386		* Timed tryLock on a locked lock times out
387		*/
388	<	public void testTryLock_Timeout() {
389	<	final ReentrantLock lock = new ReentrantLock();
390	<	lock.lock();
391	<	Thread t = new Thread(new Runnable() {
392	<	public void run() {
393	<	try {
394	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
395	<	} catch (Exception ex) {
396	<	threadUnexpectedException();
397	<	}
398	<	}
399	<	});
400	<	try {
401	<	t.start();
402	<	t.join();
348	<	lock.unlock();
349	<	} catch(Exception e){
350	<	unexpectedException();
351	<	}
352	<	}
353	<
354	<	/**
355	<	* getHoldCount returns number of recursive holds
356	<	*/
357	<	public void testGetHoldCount() {
358	<	ReentrantLock lock = new ReentrantLock();
359	<	for(int i = 1; i <= SIZE; i++) {
360	<	lock.lock();
361	<	assertEquals(i,lock.getHoldCount());
362	<	}
363	<	for(int i = SIZE; i > 0; i--) {
364	<	lock.unlock();
365	<	assertEquals(i-1,lock.getHoldCount());
366	<	}
388	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
389	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
390	>	public void testTryLock_Timeout(boolean fair) {
391	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
392	>	lock.lock();
393	>	Thread t = newStartedThread(new CheckedRunnable() {
394	>	public void realRun() throws InterruptedException {
395	>	long startTime = System.nanoTime();
396	>	long timeoutMillis = 10;
397	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
398	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
399	>	}});
400	>
401	>	awaitTermination(t);
402	>	releaseLock(lock);
403		}
404	<
369	<
404	>
405		/**
406	<	* isLocked is true when locked and false when not
406	>	* getHoldCount returns number of recursive holds
407		*/
408	<	public void testIsLocked() {
409	<	final ReentrantLock lock = new ReentrantLock();
410	<	lock.lock();
411	<	assertTrue(lock.isLocked());
412	<	lock.unlock();
413	<	assertFalse(lock.isLocked());
414	<	Thread t = new Thread(new Runnable() {
415	<	public void run() {
416	<	lock.lock();
417	<	try {
418	<	Thread.sleep(SMALL_DELAY_MS);
384	<	}
385	<	catch(Exception e) {
386	<	threadUnexpectedException();
387	<	}
388	<	lock.unlock();
389	<	}
390	<	});
391	<	try {
392	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
394	<	assertTrue(lock.isLocked());
395	<	t.join();
396	<	assertFalse(lock.isLocked());
397	<	} catch(Exception e){
398	<	unexpectedException();
408	>	public void testGetHoldCount()      { testGetHoldCount(false); }
409	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
410	>	public void testGetHoldCount(boolean fair) {
411	>	ReentrantLock lock = new ReentrantLock(fair);
412	>	for (int i = 1; i <= SIZE; i++) {
413	>	lock.lock();
414	>	assertEquals(i, lock.getHoldCount());
415	>	}
416	>	for (int i = SIZE; i > 0; i--) {
417	>	lock.unlock();
418	>	assertEquals(i-1, lock.getHoldCount());
419		}
420		}
421
402	–
422		/**
423	<	* lockInterruptibly is interruptible.
423	>	* isLocked is true when locked and false when not
424		*/
425	<	public void testLockInterruptibly1() {
426	<	final ReentrantLock lock = new ReentrantLock();
427	<	lock.lock();
409	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
425	>	public void testIsLocked()      { testIsLocked(false); }
426	>	public void testIsLocked_fair() { testIsLocked(true); }
427	>	public void testIsLocked(boolean fair) {
428		try {
429	<	t.start();
430	<	t.interrupt();
429	>	final ReentrantLock lock = new ReentrantLock(fair);
430	>	assertFalse(lock.isLocked());
431	>	lock.lock();
432	>	assertTrue(lock.isLocked());
433	>	lock.lock();
434	>	assertTrue(lock.isLocked());
435	>	lock.unlock();
436	>	assertTrue(lock.isLocked());
437		lock.unlock();
438	<	t.join();
439	<	} catch(Exception e){
440	<	unexpectedException();
438	>	assertFalse(lock.isLocked());
439	>	final CyclicBarrier barrier = new CyclicBarrier(2);
440	>	Thread t = newStartedThread(new CheckedRunnable() {
441	>	public void realRun() throws Exception {
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444	>	barrier.await();
445	>	barrier.await();
446	>	lock.unlock();
447	>	}});
448	>
449	>	barrier.await();
450	>	assertTrue(lock.isLocked());
451	>	barrier.await();
452	>	awaitTermination(t);
453	>	assertFalse(lock.isLocked());
454	>	} catch (Exception e) {
455	>	threadUnexpectedException(e);
456		}
457	<	}
457	>	}
458
459		/**
460		* lockInterruptibly succeeds when unlocked, else is interruptible
461		*/
462	<	public void testLockInterruptibly2() {
463	<	final ReentrantLock lock = new ReentrantLock();
464	<	try {
465	<	lock.lockInterruptibly();
427	<	} catch(Exception e) {
428	<	unexpectedException();
429	<	}
430	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
462	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
463	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
464	>	public void testLockInterruptibly(boolean fair) {
465	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
466		try {
467	<	t.start();
468	<	t.interrupt();
469	<	assertTrue(lock.isLocked());
435	<	assertTrue(lock.isHeldByCurrentThread());
436	<	t.join();
437	<	} catch(Exception e){
438	<	unexpectedException();
467	>	lock.lockInterruptibly();
468	>	} catch (InterruptedException ie) {
469	>	threadUnexpectedException(ie);
470		}
471	+	assertLockedByMoi(lock);
472	+	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
473	+	waitForQueuedThread(lock, t);
474	+	t.interrupt();
475	+	assertTrue(lock.isLocked());
476	+	assertTrue(lock.isHeldByCurrentThread());
477	+	awaitTermination(t);
478	+	releaseLock(lock);
479		}
480
481		/**
482		* Calling await without holding lock throws IllegalMonitorStateException
483		*/
484	<	public void testAwait_IllegalMonitor() {
485	<	final ReentrantLock lock = new ReentrantLock();
484	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
485	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
486	>	public void testAwait_IMSE(boolean fair) {
487	>	final ReentrantLock lock = new ReentrantLock(fair);
488		final Condition c = lock.newCondition();
489	<	try {
490	<	c.await();
491	<	shouldThrow();
492	<	}
493	<	catch (IllegalMonitorStateException success) {
494	<	}
495	<	catch (Exception ex) {
496	<	unexpectedException();
489	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
490	>	long startTime = System.nanoTime();
491	>	try {
492	>	await(c, awaitMethod);
493	>	shouldThrow();
494	>	} catch (IllegalMonitorStateException success) {
495	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
496	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
497		}
498		}
499
500		/**
501		* Calling signal without holding lock throws IllegalMonitorStateException
502		*/
503	<	public void testSignal_IllegalMonitor() {
504	<	final ReentrantLock lock = new ReentrantLock();
503	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
504	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
505	>	public void testSignal_IMSE(boolean fair) {
506	>	final ReentrantLock lock = new ReentrantLock(fair);
507		final Condition c = lock.newCondition();
508		try {
509		c.signal();
510		shouldThrow();
511	<	}
469	<	catch (IllegalMonitorStateException success) {
470	<	}
471	<	catch (Exception ex) {
472	<	unexpectedException();
473	<	}
511	>	} catch (IllegalMonitorStateException success) {}
512		}
513
514		/**
515		* awaitNanos without a signal times out
516		*/
517	<	public void testAwaitNanos_Timeout() {
518	<	final ReentrantLock lock = new ReentrantLock();
519	<	final Condition c = lock.newCondition();
517	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
518	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
519	>	public void testAwaitNanos_Timeout(boolean fair) {
520		try {
521	+	final ReentrantLock lock = new ReentrantLock(fair);
522	+	final Condition c = lock.newCondition();
523		lock.lock();
524	<	long t = c.awaitNanos(100);
525	<	assertTrue(t <= 0);
524	>	long startTime = System.nanoTime();
525	>	long timeoutMillis = 10;
526	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
527	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
528	>	assertTrue(nanosRemaining <= 0);
529	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
530		lock.unlock();
531	<	}
532	<	catch (Exception ex) {
489	<	unexpectedException();
531	>	} catch (InterruptedException e) {
532	>	threadUnexpectedException(e);
533		}
534		}
535
536		/**
537	<	*  timed await without a signal times out
537	>	* timed await without a signal times out
538		*/
539	<	public void testAwait_Timeout() {
540	<	final ReentrantLock lock = new ReentrantLock();
541	<	final Condition c = lock.newCondition();
539	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
540	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
541	>	public void testAwait_Timeout(boolean fair) {
542		try {
543	+	final ReentrantLock lock = new ReentrantLock(fair);
544	+	final Condition c = lock.newCondition();
545		lock.lock();
546	<	c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
546	>	long startTime = System.nanoTime();
547	>	long timeoutMillis = 10;
548	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
549	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
550		lock.unlock();
551	<	}
552	<	catch (Exception ex) {
505	<	unexpectedException();
551	>	} catch (InterruptedException e) {
552	>	threadUnexpectedException(e);
553		}
554		}
555
556		/**
557		* awaitUntil without a signal times out
558		*/
559	<	public void testAwaitUntil_Timeout() {
560	<	final ReentrantLock lock = new ReentrantLock();
561	<	final Condition c = lock.newCondition();
559	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
560	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
561	>	public void testAwaitUntil_Timeout(boolean fair) {
562		try {
563	+	final ReentrantLock lock = new ReentrantLock(fair);
564	+	final Condition c = lock.newCondition();
565		lock.lock();
566	+	long startTime = System.nanoTime();
567	+	long timeoutMillis = 10;
568		java.util.Date d = new java.util.Date();
569	<	c.awaitUntil(new java.util.Date(d.getTime() + 10));
569	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
570	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
571		lock.unlock();
572	<	}
573	<	catch (Exception ex) {
522	<	unexpectedException();
572	>	} catch (InterruptedException e) {
573	>	threadUnexpectedException(e);
574		}
575		}
576
577		/**
578		* await returns when signalled
579		*/
580	<	public void testAwait() {
581	<	final ReentrantLock lock = new ReentrantLock();
580	>	public void testAwait()      { testAwait(false); }
581	>	public void testAwait_fair() { testAwait(true); }
582	>	public void testAwait(boolean fair) {
583	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
584		final Condition c = lock.newCondition();
585	<	Thread t = new Thread(new Runnable() {
586	<	public void run() {
587	<	try {
588	<	lock.lock();
589	<	c.await();
590	<	lock.unlock();
591	<	}
592	<	catch(InterruptedException e) {
540	<	threadUnexpectedException();
541	<	}
542	<	}
543	<	});
585	>	final CountDownLatch locked = new CountDownLatch(1);
586	>	Thread t = newStartedThread(new CheckedRunnable() {
587	>	public void realRun() throws InterruptedException {
588	>	lock.lock();
589	>	locked.countDown();
590	>	c.await();
591	>	lock.unlock();
592	>	}});
593
594	<	try {
595	<	t.start();
596	<	Thread.sleep(SHORT_DELAY_MS);
597	<	lock.lock();
598	<	c.signal();
599	<	lock.unlock();
600	<	t.join(SHORT_DELAY_MS);
601	<	assertFalse(t.isAlive());
553	<	}
554	<	catch (Exception ex) {
555	<	unexpectedException();
556	<	}
594	>	await(locked);
595	>	lock.lock();
596	>	assertHasWaiters(lock, c, t);
597	>	c.signal();
598	>	assertHasNoWaiters(lock, c);
599	>	assertTrue(t.isAlive());
600	>	lock.unlock();
601	>	awaitTermination(t);
602		}
603
604		/**
605		* hasWaiters throws NPE if null
606		*/
607	<	public void testHasWaitersNPE() {
608	<	final ReentrantLock lock = new ReentrantLock();
607	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
608	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
609	>	public void testHasWaitersNPE(boolean fair) {
610	>	final ReentrantLock lock = new ReentrantLock(fair);
611		try {
612		lock.hasWaiters(null);
613		shouldThrow();
614	<	} catch (NullPointerException success) {
568	<	} catch (Exception ex) {
569	<	unexpectedException();
570	<	}
614	>	} catch (NullPointerException success) {}
615		}
616
617		/**
618		* getWaitQueueLength throws NPE if null
619		*/
620	<	public void testGetWaitQueueLengthNPE() {
621	<	final ReentrantLock lock = new ReentrantLock();
620	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
621	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
622	>	public void testGetWaitQueueLengthNPE(boolean fair) {
623	>	final ReentrantLock lock = new ReentrantLock(fair);
624		try {
625		lock.getWaitQueueLength(null);
626		shouldThrow();
627	<	} catch (NullPointerException success) {
582	<	} catch (Exception ex) {
583	<	unexpectedException();
584	<	}
627	>	} catch (NullPointerException success) {}
628		}
629
587	–
630		/**
631		* getWaitingThreads throws NPE if null
632		*/
633	<	public void testGetWaitingThreadsNPE() {
634	<	final PublicReentrantLock lock = new PublicReentrantLock();
633	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
634	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
635	>	public void testGetWaitingThreadsNPE(boolean fair) {
636	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
637		try {
638		lock.getWaitingThreads(null);
639		shouldThrow();
640	<	} catch (NullPointerException success) {
597	<	} catch (Exception ex) {
598	<	unexpectedException();
599	<	}
640	>	} catch (NullPointerException success) {}
641		}
642
602	–
643		/**
644	<	* hasWaiters throws IAE if not owned
644	>	* hasWaiters throws IllegalArgumentException if not owned
645		*/
646	<	public void testHasWaitersIAE() {
647	<	final ReentrantLock lock = new ReentrantLock();
648	<	final Condition c = (lock.newCondition());
649	<	final ReentrantLock lock2 = new ReentrantLock();
646	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
647	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
648	>	public void testHasWaitersIAE(boolean fair) {
649	>	final ReentrantLock lock = new ReentrantLock(fair);
650	>	final Condition c = lock.newCondition();
651	>	final ReentrantLock lock2 = new ReentrantLock(fair);
652		try {
653		lock2.hasWaiters(c);
654		shouldThrow();
655	<	} catch (IllegalArgumentException success) {
614	<	} catch (Exception ex) {
615	<	unexpectedException();
616	<	}
655	>	} catch (IllegalArgumentException success) {}
656		}
657
658		/**
659	<	* hasWaiters throws IMSE if not locked
659	>	* hasWaiters throws IllegalMonitorStateException if not locked
660		*/
661	<	public void testHasWaitersIMSE() {
662	<	final ReentrantLock lock = new ReentrantLock();
663	<	final Condition c = (lock.newCondition());
661	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
662	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
663	>	public void testHasWaitersIMSE(boolean fair) {
664	>	final ReentrantLock lock = new ReentrantLock(fair);
665	>	final Condition c = lock.newCondition();
666		try {
667		lock.hasWaiters(c);
668		shouldThrow();
669	<	} catch (IllegalMonitorStateException success) {
629	<	} catch (Exception ex) {
630	<	unexpectedException();
631	<	}
669	>	} catch (IllegalMonitorStateException success) {}
670		}
671
634	–
672		/**
673	<	* getWaitQueueLength throws IAE if not owned
673	>	* getWaitQueueLength throws IllegalArgumentException if not owned
674		*/
675	<	public void testGetWaitQueueLengthIAE() {
676	<	final ReentrantLock lock = new ReentrantLock();
677	<	final Condition c = (lock.newCondition());
678	<	final ReentrantLock lock2 = new ReentrantLock();
675	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
676	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
677	>	public void testGetWaitQueueLengthIAE(boolean fair) {
678	>	final ReentrantLock lock = new ReentrantLock(fair);
679	>	final Condition c = lock.newCondition();
680	>	final ReentrantLock lock2 = new ReentrantLock(fair);
681		try {
682		lock2.getWaitQueueLength(c);
683		shouldThrow();
684	<	} catch (IllegalArgumentException success) {
646	<	} catch (Exception ex) {
647	<	unexpectedException();
648	<	}
684	>	} catch (IllegalArgumentException success) {}
685		}
686
687		/**
688	<	* getWaitQueueLength throws IMSE if not locked
688	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
689		*/
690	<	public void testGetWaitQueueLengthIMSE() {
691	<	final ReentrantLock lock = new ReentrantLock();
692	<	final Condition c = (lock.newCondition());
690	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
691	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
692	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
693	>	final ReentrantLock lock = new ReentrantLock(fair);
694	>	final Condition c = lock.newCondition();
695		try {
696		lock.getWaitQueueLength(c);
697		shouldThrow();
698	<	} catch (IllegalMonitorStateException success) {
661	<	} catch (Exception ex) {
662	<	unexpectedException();
663	<	}
698	>	} catch (IllegalMonitorStateException success) {}
699		}
700
666	–
701		/**
702	<	* getWaitingThreads throws IAE if not owned
702	>	* getWaitingThreads throws IllegalArgumentException if not owned
703		*/
704	<	public void testGetWaitingThreadsIAE() {
705	<	final PublicReentrantLock lock = new PublicReentrantLock();
706	<	final Condition c = (lock.newCondition());
707	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
704	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
705	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
706	>	public void testGetWaitingThreadsIAE(boolean fair) {
707	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
708	>	final Condition c = lock.newCondition();
709	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
710		try {
711		lock2.getWaitingThreads(c);
712		shouldThrow();
713	<	} catch (IllegalArgumentException success) {
678	<	} catch (Exception ex) {
679	<	unexpectedException();
680	<	}
713	>	} catch (IllegalArgumentException success) {}
714		}
715
716		/**
717	<	* getWaitingThreads throws IMSE if not locked
717	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
718		*/
719	<	public void testGetWaitingThreadsIMSE() {
720	<	final PublicReentrantLock lock = new PublicReentrantLock();
721	<	final Condition c = (lock.newCondition());
719	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
720	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
721	>	public void testGetWaitingThreadsIMSE(boolean fair) {
722	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
723	>	final Condition c = lock.newCondition();
724		try {
725		lock.getWaitingThreads(c);
726		shouldThrow();
727	<	} catch (IllegalMonitorStateException success) {
693	<	} catch (Exception ex) {
694	<	unexpectedException();
695	<	}
727	>	} catch (IllegalMonitorStateException success) {}
728		}
729
698	–
699	–
730		/**
731		* hasWaiters returns true when a thread is waiting, else false
732		*/
733	<	public void testHasWaiters() {
734	<	final ReentrantLock lock = new ReentrantLock();
733	>	public void testHasWaiters()      { testHasWaiters(false); }
734	>	public void testHasWaiters_fair() { testHasWaiters(true); }
735	>	public void testHasWaiters(boolean fair) {
736	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
737		final Condition c = lock.newCondition();
738	<	Thread t = new Thread(new Runnable() {
739	<	public void run() {
740	<	try {
741	<	lock.lock();
742	<	threadAssertFalse(lock.hasWaiters(c));
743	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
744	<	c.await();
745	<	lock.unlock();
746	<	}
747	<	catch(InterruptedException e) {
748	<	threadUnexpectedException();
749	<	}
718	<	}
719	<	});
738	>	final CountDownLatch locked = new CountDownLatch(1);
739	>	Thread t = newStartedThread(new CheckedRunnable() {
740	>	public void realRun() throws InterruptedException {
741	>	lock.lock();
742	>	assertHasNoWaiters(lock, c);
743	>	assertFalse(lock.hasWaiters(c));
744	>	locked.countDown();
745	>	c.await();
746	>	assertHasNoWaiters(lock, c);
747	>	assertFalse(lock.hasWaiters(c));
748	>	lock.unlock();
749	>	}});
750
751	<	try {
752	<	t.start();
753	<	Thread.sleep(SHORT_DELAY_MS);
754	<	lock.lock();
755	<	assertTrue(lock.hasWaiters(c));
756	<	assertEquals(1, lock.getWaitQueueLength(c));
757	<	c.signal();
758	<	lock.unlock();
759	<	Thread.sleep(SHORT_DELAY_MS);
760	<	lock.lock();
731	<	assertFalse(lock.hasWaiters(c));
732	<	assertEquals(0, lock.getWaitQueueLength(c));
733	<	lock.unlock();
734	<	t.join(SHORT_DELAY_MS);
735	<	assertFalse(t.isAlive());
736	<	}
737	<	catch (Exception ex) {
738	<	unexpectedException();
739	<	}
751	>	await(locked);
752	>	lock.lock();
753	>	assertHasWaiters(lock, c, t);
754	>	assertTrue(lock.hasWaiters(c));
755	>	c.signal();
756	>	assertHasNoWaiters(lock, c);
757	>	assertFalse(lock.hasWaiters(c));
758	>	lock.unlock();
759	>	awaitTermination(t);
760	>	assertHasNoWaiters(lock, c);
761		}
762
763		/**
764		* getWaitQueueLength returns number of waiting threads
765		*/
766	<	public void testGetWaitQueueLength() {
767	<	final ReentrantLock lock = new ReentrantLock();
766	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
767	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
768	>	public void testGetWaitQueueLength(boolean fair) {
769	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
770		final Condition c = lock.newCondition();
771	<	Thread t1 = new Thread(new Runnable() {
772	<	public void run() {
773	<	try {
774	<	lock.lock();
775	<	threadAssertFalse(lock.hasWaiters(c));
776	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
777	<	c.await();
778	<	lock.unlock();
779	<	}
780	<	catch(InterruptedException e) {
781	<	threadUnexpectedException();
782	<	}
783	<	}
784	<	});
785	<
786	<	Thread t2 = new Thread(new Runnable() {
787	<	public void run() {
788	<	try {
789	<	lock.lock();
790	<	threadAssertTrue(lock.hasWaiters(c));
791	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
769	<	c.await();
770	<	lock.unlock();
771	<	}
772	<	catch(InterruptedException e) {
773	<	threadUnexpectedException();
774	<	}
775	<	}
776	<	});
771	>	final CountDownLatch locked1 = new CountDownLatch(1);
772	>	final CountDownLatch locked2 = new CountDownLatch(1);
773	>	Thread t1 = new Thread(new CheckedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	lock.lock();
776	>	assertFalse(lock.hasWaiters(c));
777	>	assertEquals(0, lock.getWaitQueueLength(c));
778	>	locked1.countDown();
779	>	c.await();
780	>	lock.unlock();
781	>	}});
782	>
783	>	Thread t2 = new Thread(new CheckedRunnable() {
784	>	public void realRun() throws InterruptedException {
785	>	lock.lock();
786	>	assertTrue(lock.hasWaiters(c));
787	>	assertEquals(1, lock.getWaitQueueLength(c));
788	>	locked2.countDown();
789	>	c.await();
790	>	lock.unlock();
791	>	}});
792
793	<	try {
794	<	t1.start();
795	<	Thread.sleep(SHORT_DELAY_MS);
796	<	t2.start();
797	<	Thread.sleep(SHORT_DELAY_MS);
798	<	lock.lock();
799	<	assertTrue(lock.hasWaiters(c));
800	<	assertEquals(2, lock.getWaitQueueLength(c));
801	<	c.signalAll();
802	<	lock.unlock();
803	<	Thread.sleep(SHORT_DELAY_MS);
804	<	lock.lock();
805	<	assertFalse(lock.hasWaiters(c));
806	<	assertEquals(0, lock.getWaitQueueLength(c));
807	<	lock.unlock();
808	<	t1.join(SHORT_DELAY_MS);
809	<	t2.join(SHORT_DELAY_MS);
810	<	assertFalse(t1.isAlive());
811	<	assertFalse(t2.isAlive());
812	<	}
813	<	catch (Exception ex) {
814	<	unexpectedException();
815	<	}
793	>	lock.lock();
794	>	assertEquals(0, lock.getWaitQueueLength(c));
795	>	lock.unlock();
796	>
797	>	t1.start();
798	>	await(locked1);
799	>
800	>	lock.lock();
801	>	assertHasWaiters(lock, c, t1);
802	>	assertEquals(1, lock.getWaitQueueLength(c));
803	>	lock.unlock();
804	>
805	>	t2.start();
806	>	await(locked2);
807	>
808	>	lock.lock();
809	>	assertHasWaiters(lock, c, t1, t2);
810	>	assertEquals(2, lock.getWaitQueueLength(c));
811	>	c.signalAll();
812	>	assertHasNoWaiters(lock, c);
813	>	lock.unlock();
814	>
815	>	awaitTermination(t1);
816	>	awaitTermination(t2);
817	>
818	>	assertHasNoWaiters(lock, c);
819		}
820
821		/**
822		* getWaitingThreads returns only and all waiting threads
823		*/
824	<	public void testGetWaitingThreads() {
825	<	final PublicReentrantLock lock = new PublicReentrantLock();
824	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
825	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
826	>	public void testGetWaitingThreads(boolean fair) {
827	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
828		final Condition c = lock.newCondition();
829	<	Thread t1 = new Thread(new Runnable() {
830	<	public void run() {
831	<	try {
832	<	lock.lock();
833	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
834	<	c.await();
835	<	lock.unlock();
836	<	}
837	<	catch(InterruptedException e) {
838	<	threadUnexpectedException();
839	<	}
840	<	}
841	<	});
842	<
843	<	Thread t2 = new Thread(new Runnable() {
844	<	public void run() {
845	<	try {
846	<	lock.lock();
847	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
828	<	c.await();
829	<	lock.unlock();
830	<	}
831	<	catch(InterruptedException e) {
832	<	threadUnexpectedException();
833	<	}
834	<	}
835	<	});
829	>	final CountDownLatch locked1 = new CountDownLatch(1);
830	>	final CountDownLatch locked2 = new CountDownLatch(1);
831	>	Thread t1 = new Thread(new CheckedRunnable() {
832	>	public void realRun() throws InterruptedException {
833	>	lock.lock();
834	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
835	>	locked1.countDown();
836	>	c.await();
837	>	lock.unlock();
838	>	}});
839	>
840	>	Thread t2 = new Thread(new CheckedRunnable() {
841	>	public void realRun() throws InterruptedException {
842	>	lock.lock();
843	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
844	>	locked2.countDown();
845	>	c.await();
846	>	lock.unlock();
847	>	}});
848
849	<	try {
850	<	lock.lock();
851	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
852	<	lock.unlock();
853	<	t1.start();
854	<	Thread.sleep(SHORT_DELAY_MS);
855	<	t2.start();
856	<	Thread.sleep(SHORT_DELAY_MS);
857	<	lock.lock();
858	<	assertTrue(lock.hasWaiters(c));
859	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
860	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
861	<	c.signalAll();
862	<	lock.unlock();
863	<	Thread.sleep(SHORT_DELAY_MS);
864	<	lock.lock();
853	<	assertFalse(lock.hasWaiters(c));
854	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
855	<	lock.unlock();
856	<	t1.join(SHORT_DELAY_MS);
857	<	t2.join(SHORT_DELAY_MS);
858	<	assertFalse(t1.isAlive());
859	<	assertFalse(t2.isAlive());
860	<	}
861	<	catch (Exception ex) {
862	<	unexpectedException();
863	<	}
864	<	}
849	>	lock.lock();
850	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
851	>	lock.unlock();
852	>
853	>	t1.start();
854	>	await(locked1);
855	>
856	>	lock.lock();
857	>	assertHasWaiters(lock, c, t1);
858	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
859	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
860	>	assertEquals(1, lock.getWaitingThreads(c).size());
861	>	lock.unlock();
862	>
863	>	t2.start();
864	>	await(locked2);
865
866	+	lock.lock();
867	+	assertHasWaiters(lock, c, t1, t2);
868	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
869	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
870	+	assertEquals(2, lock.getWaitingThreads(c).size());
871	+	c.signalAll();
872	+	assertHasNoWaiters(lock, c);
873	+	lock.unlock();
874	+
875	+	awaitTermination(t1);
876	+	awaitTermination(t2);
877
878	+	assertHasNoWaiters(lock, c);
879	+	}
880
881		/**
882		* awaitUninterruptibly doesn't abort on interrupt
883		*/
884	<	public void testAwaitUninterruptibly() {
885	<	final ReentrantLock lock = new ReentrantLock();
884	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
885	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
886	>	public void testAwaitUninterruptibly(boolean fair) {
887	>	final ReentrantLock lock = new ReentrantLock(fair);
888		final Condition c = lock.newCondition();
889	<	Thread t = new Thread(new Runnable() {
890	<	public void run() {
891	<	lock.lock();
892	<	c.awaitUninterruptibly();
893	<	lock.unlock();
894	<	}
895	<	});
889	>	final CountDownLatch locked = new CountDownLatch(1);
890	>	Thread t = newStartedThread(new CheckedRunnable() {
891	>	public void realRun() {
892	>	lock.lock();
893	>	locked.countDown();
894	>	c.awaitUninterruptibly();
895	>	assertTrue(Thread.interrupted());
896	>	lock.unlock();
897	>	}});
898
899	<	try {
900	<	t.start();
901	<	Thread.sleep(SHORT_DELAY_MS);
902	<	t.interrupt();
903	<	lock.lock();
904	<	c.signal();
905	<	lock.unlock();
906	<	assert(t.isInterrupted());
907	<	t.join(SHORT_DELAY_MS);
908	<	assertFalse(t.isAlive());
892	<	}
893	<	catch (Exception ex) {
894	<	unexpectedException();
895	<	}
899	>	await(locked);
900	>	lock.lock();
901	>	lock.unlock();
902	>	t.interrupt();
903	>	long timeoutMillis = 10;
904	>	assertThreadStaysAlive(t, timeoutMillis);
905	>	lock.lock();
906	>	c.signal();
907	>	lock.unlock();
908	>	awaitTermination(t);
909		}
910
911		/**
912	<	* await is interruptible
913	<	*/
914	<	public void testAwait_Interrupt() {
915	<	final ReentrantLock lock = new ReentrantLock();
912	>	* await/awaitNanos/awaitUntil is interruptible
913	>	*/
914	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
915	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
916	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
917	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
918	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
919	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
920	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
921	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
922	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
923	>	final PublicReentrantLock lock =
924	>	new PublicReentrantLock(fair);
925		final Condition c = lock.newCondition();
926	<	Thread t = new Thread(new Runnable() {
927	<	public void run() {
928	<	try {
929	<	lock.lock();
930	<	c.await();
931	<	lock.unlock();
932	<	threadShouldThrow();
933	<	}
934	<	catch(InterruptedException success) {
935	<	}
936	<	}
937	<	});
938	<
939	<	try {
940	<	t.start();
941	<	Thread.sleep(SHORT_DELAY_MS);
942	<	t.interrupt();
943	<	t.join(SHORT_DELAY_MS);
944	<	assertFalse(t.isAlive());
945	<	}
946	<	catch (Exception ex) {
947	<	unexpectedException();
926	<	}
926	>	final CountDownLatch locked = new CountDownLatch(1);
927	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
928	>	public void realRun() throws InterruptedException {
929	>	lock.lock();
930	>	assertLockedByMoi(lock);
931	>	assertHasNoWaiters(lock, c);
932	>	locked.countDown();
933	>	try {
934	>	await(c, awaitMethod);
935	>	} finally {
936	>	assertLockedByMoi(lock);
937	>	assertHasNoWaiters(lock, c);
938	>	lock.unlock();
939	>	assertFalse(Thread.interrupted());
940	>	}
941	>	}});
942	>
943	>	await(locked);
944	>	assertHasWaiters(lock, c, t);
945	>	t.interrupt();
946	>	awaitTermination(t);
947	>	assertNotLocked(lock);
948		}
949
950		/**
951	<	* awaitNanos is interruptible
951	>	* signalAll wakes up all threads
952		*/
953	<	public void testAwaitNanos_Interrupt() {
954	<	final ReentrantLock lock = new ReentrantLock();
953	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
954	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
955	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
956	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
957	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
958	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
959	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
960	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
961	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
962	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
963		final Condition c = lock.newCondition();
964	<	Thread t = new Thread(new Runnable() {
965	<	public void run() {
966	<	try {
967	<	lock.lock();
968	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
969	<	lock.unlock();
970	<	threadShouldThrow();
971	<	}
943	<	catch(InterruptedException success) {
944	<	}
945	<	}
946	<	});
947	<
948	<	try {
949	<	t.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	t.interrupt();
952	<	t.join(SHORT_DELAY_MS);
953	<	assertFalse(t.isAlive());
954	<	}
955	<	catch (Exception ex) {
956	<	unexpectedException();
964	>	final CountDownLatch locked = new CountDownLatch(2);
965	>	class Awaiter extends CheckedRunnable {
966	>	public void realRun() throws InterruptedException {
967	>	lock.lock();
968	>	locked.countDown();
969	>	await(c, awaitMethod);
970	>	lock.unlock();
971	>	}
972		}
973	+
974	+	Thread t1 = newStartedThread(new Awaiter());
975	+	Thread t2 = newStartedThread(new Awaiter());
976	+
977	+	await(locked);
978	+	lock.lock();
979	+	assertHasWaiters(lock, c, t1, t2);
980	+	c.signalAll();
981	+	assertHasNoWaiters(lock, c);
982	+	lock.unlock();
983	+	awaitTermination(t1);
984	+	awaitTermination(t2);
985		}
986
987		/**
988	<	* awaitUntil is interruptible
989	<	*/
990	<	public void testAwaitUntil_Interrupt() {
991	<	final ReentrantLock lock = new ReentrantLock();
988	>	* signal wakes up waiting threads in FIFO order
989	>	*/
990	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
991	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
992	>	public void testSignalWakesFifo(boolean fair) {
993	>	final PublicReentrantLock lock =
994	>	new PublicReentrantLock(fair);
995		final Condition c = lock.newCondition();
996	<	Thread t = new Thread(new Runnable() {
997	<	public void run() {
998	<	try {
999	<	lock.lock();
1000	<	java.util.Date d = new java.util.Date();
1001	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1002	<	lock.unlock();
1003	<	threadShouldThrow();
1004	<	}
1005	<	catch(InterruptedException success) {
1006	<	}
1007	<	}
1008	<	});
996	>	final CountDownLatch locked1 = new CountDownLatch(1);
997	>	final CountDownLatch locked2 = new CountDownLatch(1);
998	>	Thread t1 = newStartedThread(new CheckedRunnable() {
999	>	public void realRun() throws InterruptedException {
1000	>	lock.lock();
1001	>	locked1.countDown();
1002	>	c.await();
1003	>	lock.unlock();
1004	>	}});
1005	>
1006	>	await(locked1);
1007	>
1008	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1009	>	public void realRun() throws InterruptedException {
1010	>	lock.lock();
1011	>	locked2.countDown();
1012	>	c.await();
1013	>	lock.unlock();
1014	>	}});
1015
1016	<	try {
1017	<	t.start();
1018	<	Thread.sleep(SHORT_DELAY_MS);
1019	<	t.interrupt();
1020	<	t.join(SHORT_DELAY_MS);
1021	<	assertFalse(t.isAlive());
1022	<	}
1023	<	catch (Exception ex) {
1024	<	unexpectedException();
1025	<	}
1016	>	await(locked2);
1017	>
1018	>	lock.lock();
1019	>	assertHasWaiters(lock, c, t1, t2);
1020	>	assertFalse(lock.hasQueuedThreads());
1021	>	c.signal();
1022	>	assertHasWaiters(lock, c, t2);
1023	>	assertTrue(lock.hasQueuedThread(t1));
1024	>	assertFalse(lock.hasQueuedThread(t2));
1025	>	c.signal();
1026	>	assertHasNoWaiters(lock, c);
1027	>	assertTrue(lock.hasQueuedThread(t1));
1028	>	assertTrue(lock.hasQueuedThread(t2));
1029	>	lock.unlock();
1030	>	awaitTermination(t1);
1031	>	awaitTermination(t2);
1032		}
1033
1034		/**
1035	<	* signalAll wakes up all threads
1036	<	*/
1037	<	public void testSignalAll() {
1038	<	final ReentrantLock lock = new ReentrantLock();
1035	>	* await after multiple reentrant locking preserves lock count
1036	>	*/
1037	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1038	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1039	>	public void testAwaitLockCount(boolean fair) {
1040	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1041		final Condition c = lock.newCondition();
1042	<	Thread t1 = new Thread(new Runnable() {
1043	<	public void run() {
1044	<	try {
1045	<	lock.lock();
1046	<	c.await();
1047	<	lock.unlock();
1048	<	}
1049	<	catch(InterruptedException e) {
1050	<	threadUnexpectedException();
1051	<	}
1052	<	}
1053	<	});
1054	<
1055	<	Thread t2 = new Thread(new Runnable() {
1056	<	public void run() {
1057	<	try {
1058	<	lock.lock();
1059	<	c.await();
1060	<	lock.unlock();
1061	<	}
1062	<	catch(InterruptedException e) {
1063	<	threadUnexpectedException();
1064	<	}
1065	<	}
1066	<	});
1042	>	final CountDownLatch locked = new CountDownLatch(2);
1043	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1044	>	public void realRun() throws InterruptedException {
1045	>	lock.lock();
1046	>	assertLockedByMoi(lock);
1047	>	assertEquals(1, lock.getHoldCount());
1048	>	locked.countDown();
1049	>	c.await();
1050	>	assertLockedByMoi(lock);
1051	>	assertEquals(1, lock.getHoldCount());
1052	>	lock.unlock();
1053	>	}});
1054	>
1055	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1056	>	public void realRun() throws InterruptedException {
1057	>	lock.lock();
1058	>	lock.lock();
1059	>	assertLockedByMoi(lock);
1060	>	assertEquals(2, lock.getHoldCount());
1061	>	locked.countDown();
1062	>	c.await();
1063	>	assertLockedByMoi(lock);
1064	>	assertEquals(2, lock.getHoldCount());
1065	>	lock.unlock();
1066	>	lock.unlock();
1067	>	}});
1068
1069	<	try {
1070	<	t1.start();
1071	<	t2.start();
1072	<	Thread.sleep(SHORT_DELAY_MS);
1073	<	lock.lock();
1074	<	c.signalAll();
1075	<	lock.unlock();
1076	<	t1.join(SHORT_DELAY_MS);
1077	<	t2.join(SHORT_DELAY_MS);
1033	<	assertFalse(t1.isAlive());
1034	<	assertFalse(t2.isAlive());
1035	<	}
1036	<	catch (Exception ex) {
1037	<	unexpectedException();
1038	<	}
1069	>	await(locked);
1070	>	lock.lock();
1071	>	assertHasWaiters(lock, c, t1, t2);
1072	>	assertEquals(1, lock.getHoldCount());
1073	>	c.signalAll();
1074	>	assertHasNoWaiters(lock, c);
1075	>	lock.unlock();
1076	>	awaitTermination(t1);
1077	>	awaitTermination(t2);
1078		}
1079
1080		/**
1081		* A serialized lock deserializes as unlocked
1082		*/
1083	<	public void testSerialization() {
1084	<	ReentrantLock l = new ReentrantLock();
1085	<	l.lock();
1086	<	l.unlock();
1083	>	public void testSerialization()      { testSerialization(false); }
1084	>	public void testSerialization_fair() { testSerialization(true); }
1085	>	public void testSerialization(boolean fair) {
1086	>	ReentrantLock lock = new ReentrantLock(fair);
1087	>	lock.lock();
1088
1089	<	try {
1090	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1091	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1092	<	out.writeObject(l);
1093	<	out.close();
1094	<
1095	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1096	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1097	<	ReentrantLock r = (ReentrantLock) in.readObject();
1098	<	r.lock();
1099	<	r.unlock();
1100	<	} catch(Exception e){
1101	<	e.printStackTrace();
1102	<	unexpectedException();
1103	<	}
1089	>	ReentrantLock clone = serialClone(lock);
1090	>	assertEquals(lock.isFair(), clone.isFair());
1091	>	assertTrue(lock.isLocked());
1092	>	assertFalse(clone.isLocked());
1093	>	assertEquals(1, lock.getHoldCount());
1094	>	assertEquals(0, clone.getHoldCount());
1095	>	clone.lock();
1096	>	clone.lock();
1097	>	assertTrue(clone.isLocked());
1098	>	assertEquals(2, clone.getHoldCount());
1099	>	assertEquals(1, lock.getHoldCount());
1100	>	clone.unlock();
1101	>	clone.unlock();
1102	>	assertTrue(lock.isLocked());
1103	>	assertFalse(clone.isLocked());
1104		}
1105
1106		/**
1107		* toString indicates current lock state
1108		*/
1109	<	public void testToString() {
1110	<	ReentrantLock lock = new ReentrantLock();
1111	<	String us = lock.toString();
1112	<	assertTrue(us.indexOf("Unlocked") >= 0);
1109	>	public void testToString()      { testToString(false); }
1110	>	public void testToString_fair() { testToString(true); }
1111	>	public void testToString(boolean fair) {
1112	>	ReentrantLock lock = new ReentrantLock(fair);
1113	>	assertTrue(lock.toString().contains("Unlocked"));
1114		lock.lock();
1115	<	String ls = lock.toString();
1116	<	assertTrue(ls.indexOf("Locked") >= 0);
1115	>	assertTrue(lock.toString().contains("Locked"));
1116	>	lock.unlock();
1117	>	assertTrue(lock.toString().contains("Unlocked"));
1118		}
1077	–
1119		}

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