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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.16 by dl, Wed Jan 7 01:02:17 2004 UTC vs.
Revision 1.57 by jsr166, Fri Feb 27 21:43:18 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.util.*;
13	<	import java.io.*;
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.CyclicBarrier;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.ReentrantLock;
18	>
19	>	import junit.framework.AssertionFailedError;
20	>	import junit.framework.Test;
21	>	import junit.framework.TestSuite;
22
23		public class ReentrantLockTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	junit.textui.TestRunner.run(suite());
26		}
27		public static Test suite() {
28	<	return new TestSuite(ReentrantLockTest.class);
28	>	return new TestSuite(ReentrantLockTest.class);
29		}
30
31		/**
32	<	* A runnable calling lockInterruptibly
32	>	* A checked runnable calling lockInterruptibly
33		*/
34	<	class InterruptibleLockRunnable implements Runnable {
34	>	class InterruptibleLockRunnable extends CheckedRunnable {
35		final ReentrantLock lock;
36	<	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
37	<	public void run() {
38	<	try {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
36	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
37	>	public void realRun() throws InterruptedException {
38	>	lock.lockInterruptibly();
39		}
40		}
41
36	–
42		/**
43	<	* A runnable calling lockInterruptibly that expects to be
43	>	* A checked runnable calling lockInterruptibly that expects to be
44		* interrupted
45		*/
46	<	class InterruptedLockRunnable implements Runnable {
46	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
47		final ReentrantLock lock;
48	<	InterruptedLockRunnable(ReentrantLock l) { lock = l; }
49	<	public void run() {
50	<	try {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
48	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
49	>	public void realRun() throws InterruptedException {
50	>	lock.lockInterruptibly();
51		}
52		}
53
#	Line 54 | Line 56 | public class ReentrantLockTest extends J
56		*/
57		static class PublicReentrantLock extends ReentrantLock {
58		PublicReentrantLock() { super(); }
59	<	public Collection<Thread> getQueuedThreads() {
60	<	return super.getQueuedThreads();
59	>	PublicReentrantLock(boolean fair) { super(fair); }
60	>	public Thread getOwner() {
61	>	return super.getOwner();
62		}
63	<	public Collection<Thread> getWaitingThreads(Condition c) {
64	<	return super.getWaitingThreads(c);
63	>	public Collection<Thread> getQueuedThreads() {
64	>	return super.getQueuedThreads();
65		}
66	+	public Collection<Thread> getWaitingThreads(Condition c) {
67	+	return super.getWaitingThreads(c);
68	+	}
69	+	}
70
71	+	/**
72	+	* Releases write lock, checking that it had a hold count of 1.
73	+	*/
74	+	void releaseLock(PublicReentrantLock lock) {
75	+	assertLockedByMoi(lock);
76	+	lock.unlock();
77	+	assertFalse(lock.isHeldByCurrentThread());
78	+	assertNotLocked(lock);
79	+	}
80
81	+	/**
82	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
83	+	*/
84	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
85	+	long startTime = System.nanoTime();
86	+	while (!lock.hasQueuedThread(t)) {
87	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
88	+	throw new AssertionFailedError("timed out");
89	+	Thread.yield();
90	+	}
91	+	assertTrue(t.isAlive());
92	+	assertNotSame(t, lock.getOwner());
93		}
94
95		/**
96	<	* Constructor sets given fairness
96	>	* Checks that lock is not locked.
97		*/
98	<	public void testConstructor() {
99	<	ReentrantLock rl = new ReentrantLock();
100	<	assertFalse(rl.isFair());
101	<	ReentrantLock r2 = new ReentrantLock(true);
102	<	assertTrue(r2.isFair());
98	>	void assertNotLocked(PublicReentrantLock lock) {
99	>	assertFalse(lock.isLocked());
100	>	assertFalse(lock.isHeldByCurrentThread());
101	>	assertNull(lock.getOwner());
102	>	assertEquals(0, lock.getHoldCount());
103		}
104
105		/**
106	<	* locking an unlocked lock succeeds
106	>	* Checks that lock is locked by the given thread.
107		*/
108	<	public void testLock() {
109	<	ReentrantLock rl = new ReentrantLock();
110	<	rl.lock();
111	<	assertTrue(rl.isLocked());
112	<	rl.unlock();
108	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
109	>	assertTrue(lock.isLocked());
110	>	assertSame(t, lock.getOwner());
111	>	assertEquals(t == Thread.currentThread(),
112	>	lock.isHeldByCurrentThread());
113	>	assertEquals(t == Thread.currentThread(),
114	>	lock.getHoldCount() > 0);
115		}
116
117		/**
118	<	* locking an unlocked fair lock succeeds
118	>	* Checks that lock is locked by the current thread.
119		*/
120	<	public void testFairLock() {
121	<	ReentrantLock rl = new ReentrantLock(true);
92	<	rl.lock();
93	<	assertTrue(rl.isLocked());
94	<	rl.unlock();
120	>	void assertLockedByMoi(PublicReentrantLock lock) {
121	>	assertLockedBy(lock, Thread.currentThread());
122		}
123
124		/**
125	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
125	>	* Checks that condition c has no waiters.
126		*/
127	<	public void testUnlock_IllegalMonitorStateException() {
128	<	ReentrantLock rl = new ReentrantLock();
129	<	try {
103	<	rl.unlock();
104	<	shouldThrow();
127	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
128	>	assertHasWaiters(lock, c, new Thread[] {});
129	>	}
130
131	<	} catch(IllegalMonitorStateException success){}
131	>	/**
132	>	* Checks that condition c has exactly the given waiter threads.
133	>	*/
134	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
135	>	Thread... threads) {
136	>	lock.lock();
137	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
138	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
139	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
140	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
141	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
142	>	new HashSet<Thread>(Arrays.asList(threads)));
143	>	lock.unlock();
144		}
145
146	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
147	+
148		/**
149	<	* tryLock on an unlocked lock succeeds
149	>	* Awaits condition using the specified AwaitMethod.
150		*/
151	<	public void testTryLock() {
152	<	ReentrantLock rl = new ReentrantLock();
153	<	assertTrue(rl.tryLock());
154	<	assertTrue(rl.isLocked());
155	<	rl.unlock();
151	>	void await(Condition c, AwaitMethod awaitMethod)
152	>	throws InterruptedException {
153	>	long timeoutMillis = 2 * LONG_DELAY_MS;
154	>	switch (awaitMethod) {
155	>	case await:
156	>	c.await();
157	>	break;
158	>	case awaitTimed:
159	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
160	>	break;
161	>	case awaitNanos:
162	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
163	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
164	>	assertTrue(nanosRemaining > 0);
165	>	break;
166	>	case awaitUntil:
167	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
168	>	break;
169	>	default:
170	>	throw new AssertionError();
171	>	}
172		}
173
174	+	/**
175	+	* Constructor sets given fairness, and is in unlocked state
176	+	*/
177	+	public void testConstructor() {
178	+	PublicReentrantLock lock;
179	+
180	+	lock = new PublicReentrantLock();
181	+	assertFalse(lock.isFair());
182	+	assertNotLocked(lock);
183	+
184	+	lock = new PublicReentrantLock(true);
185	+	assertTrue(lock.isFair());
186	+	assertNotLocked(lock);
187	+
188	+	lock = new PublicReentrantLock(false);
189	+	assertFalse(lock.isFair());
190	+	assertNotLocked(lock);
191	+	}
192
193		/**
194	<	* hasQueuedThreads reports whether there are waiting threads
194	>	* locking an unlocked lock succeeds
195		*/
196	<	public void testhasQueuedThreads() {
197	<	final ReentrantLock lock = new ReentrantLock();
198	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
199	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
196	>	public void testLock()      { testLock(false); }
197	>	public void testLock_fair() { testLock(true); }
198	>	public void testLock(boolean fair) {
199	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
200	>	lock.lock();
201	>	assertLockedByMoi(lock);
202	>	releaseLock(lock);
203	>	}
204	>
205	>	/**
206	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
207	>	*/
208	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
209	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
210	>	public void testUnlock_IMSE(boolean fair) {
211	>	ReentrantLock lock = new ReentrantLock(fair);
212		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());
213		lock.unlock();
214	<	Thread.sleep(SHORT_DELAY_MS);
215	<	assertFalse(lock.hasQueuedThreads());
216	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
214	>	shouldThrow();
215	>	} catch (IllegalMonitorStateException success) {}
216	>	}
217
218		/**
219	<	* getQueueLength reports number of waiting threads
219	>	* tryLock on an unlocked lock succeeds
220	>	*/
221	>	public void testTryLock()      { testTryLock(false); }
222	>	public void testTryLock_fair() { testTryLock(true); }
223	>	public void testTryLock(boolean fair) {
224	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
225	>	assertTrue(lock.tryLock());
226	>	assertLockedByMoi(lock);
227	>	assertTrue(lock.tryLock());
228	>	assertLockedByMoi(lock);
229	>	lock.unlock();
230	>	releaseLock(lock);
231	>	}
232	>
233	>	/**
234	>	* hasQueuedThreads reports whether there are waiting threads
235		*/
236	<	public void testGetQueueLength() {
237	<	final ReentrantLock lock = new ReentrantLock();
236	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
237	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
238	>	public void testHasQueuedThreads(boolean fair) {
239	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
240		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
241		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
242	<	try {
243	<	assertEquals(0, lock.getQueueLength());
244	<	lock.lock();
245	<	t1.start();
246	<	Thread.sleep(SHORT_DELAY_MS);
247	<	assertEquals(1, lock.getQueueLength());
248	<	t2.start();
249	<	Thread.sleep(SHORT_DELAY_MS);
250	<	assertEquals(2, lock.getQueueLength());
251	<	t1.interrupt();
252	<	Thread.sleep(SHORT_DELAY_MS);
253	<	assertEquals(1, lock.getQueueLength());
254	<	lock.unlock();
255	<	Thread.sleep(SHORT_DELAY_MS);
256	<	assertEquals(0, lock.getQueueLength());
257	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
242	>	assertFalse(lock.hasQueuedThreads());
243	>	lock.lock();
244	>	assertFalse(lock.hasQueuedThreads());
245	>	t1.start();
246	>	waitForQueuedThread(lock, t1);
247	>	assertTrue(lock.hasQueuedThreads());
248	>	t2.start();
249	>	waitForQueuedThread(lock, t2);
250	>	assertTrue(lock.hasQueuedThreads());
251	>	t1.interrupt();
252	>	awaitTermination(t1);
253	>	assertTrue(lock.hasQueuedThreads());
254	>	lock.unlock();
255	>	awaitTermination(t2);
256	>	assertFalse(lock.hasQueuedThreads());
257	>	}
258
259		/**
260		* getQueueLength reports number of waiting threads
261		*/
262	<	public void testGetQueueLength_fair() {
263	<	final ReentrantLock lock = new ReentrantLock(true);
262	>	public void testGetQueueLength()      { testGetQueueLength(false); }
263	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
264	>	public void testGetQueueLength(boolean fair) {
265	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
266		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
267		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
268	+	assertEquals(0, lock.getQueueLength());
269	+	lock.lock();
270	+	t1.start();
271	+	waitForQueuedThread(lock, t1);
272	+	assertEquals(1, lock.getQueueLength());
273	+	t2.start();
274	+	waitForQueuedThread(lock, t2);
275	+	assertEquals(2, lock.getQueueLength());
276	+	t1.interrupt();
277	+	awaitTermination(t1);
278	+	assertEquals(1, lock.getQueueLength());
279	+	lock.unlock();
280	+	awaitTermination(t2);
281	+	assertEquals(0, lock.getQueueLength());
282	+	}
283	+
284	+	/**
285	+	* hasQueuedThread(null) throws NPE
286	+	*/
287	+	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
288	+	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
289	+	public void testHasQueuedThreadNPE(boolean fair) {
290	+	final ReentrantLock lock = new ReentrantLock(fair);
291		try {
292	<	assertEquals(0, lock.getQueueLength());
293	<	lock.lock();
294	<	t1.start();
295	<	Thread.sleep(SHORT_DELAY_MS);
190	<	assertEquals(1, lock.getQueueLength());
191	<	t2.start();
192	<	Thread.sleep(SHORT_DELAY_MS);
193	<	assertEquals(2, lock.getQueueLength());
194	<	t1.interrupt();
195	<	Thread.sleep(SHORT_DELAY_MS);
196	<	assertEquals(1, lock.getQueueLength());
197	<	lock.unlock();
198	<	Thread.sleep(SHORT_DELAY_MS);
199	<	assertEquals(0, lock.getQueueLength());
200	<	t1.join();
201	<	t2.join();
202	<	} catch(Exception e){
203	<	unexpectedException();
204	<	}
205	<	}
292	>	lock.hasQueuedThread(null);
293	>	shouldThrow();
294	>	} catch (NullPointerException success) {}
295	>	}
296
297		/**
298	<	* getQueuedThreads includes waiting threads
298	>	* hasQueuedThread reports whether a thread is queued
299		*/
300	<	public void testGetQueuedThreads() {
301	<	final PublicReentrantLock lock = new PublicReentrantLock();
300	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
301	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
302	>	public void testHasQueuedThread(boolean fair) {
303	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
304		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
305		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
306	<	try {
307	<	assertTrue(lock.getQueuedThreads().isEmpty());
308	<	lock.lock();
309	<	assertTrue(lock.getQueuedThreads().isEmpty());
310	<	t1.start();
311	<	Thread.sleep(SHORT_DELAY_MS);
312	<	assertTrue(lock.getQueuedThreads().contains(t1));
313	<	t2.start();
314	<	Thread.sleep(SHORT_DELAY_MS);
315	<	assertTrue(lock.getQueuedThreads().contains(t1));
316	<	assertTrue(lock.getQueuedThreads().contains(t2));
317	<	t1.interrupt();
318	<	Thread.sleep(SHORT_DELAY_MS);
319	<	assertFalse(lock.getQueuedThreads().contains(t1));
320	<	assertTrue(lock.getQueuedThreads().contains(t2));
321	<	lock.unlock();
322	<	Thread.sleep(SHORT_DELAY_MS);
323	<	assertTrue(lock.getQueuedThreads().isEmpty());
324	<	t1.join();
325	<	t2.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
237	<	}
238	<
306	>	assertFalse(lock.hasQueuedThread(t1));
307	>	assertFalse(lock.hasQueuedThread(t2));
308	>	lock.lock();
309	>	t1.start();
310	>	waitForQueuedThread(lock, t1);
311	>	assertTrue(lock.hasQueuedThread(t1));
312	>	assertFalse(lock.hasQueuedThread(t2));
313	>	t2.start();
314	>	waitForQueuedThread(lock, t2);
315	>	assertTrue(lock.hasQueuedThread(t1));
316	>	assertTrue(lock.hasQueuedThread(t2));
317	>	t1.interrupt();
318	>	awaitTermination(t1);
319	>	assertFalse(lock.hasQueuedThread(t1));
320	>	assertTrue(lock.hasQueuedThread(t2));
321	>	lock.unlock();
322	>	awaitTermination(t2);
323	>	assertFalse(lock.hasQueuedThread(t1));
324	>	assertFalse(lock.hasQueuedThread(t2));
325	>	}
326
327		/**
328	<	* timed tryLock is interruptible.
328	>	* getQueuedThreads includes waiting threads
329		*/
330	<	public void testInterruptedException2() {
331	<	final ReentrantLock lock = new ReentrantLock();
332	<	lock.lock();
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	try {
336	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
337	<	threadShouldThrow();
338	<	} catch(InterruptedException success){}
339	<	}
340	<	});
341	<	try {
342	<	t.start();
343	<	t.interrupt();
344	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
330	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
331	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
332	>	public void testGetQueuedThreads(boolean fair) {
333	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
334	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
335	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
336	>	assertTrue(lock.getQueuedThreads().isEmpty());
337	>	lock.lock();
338	>	assertTrue(lock.getQueuedThreads().isEmpty());
339	>	t1.start();
340	>	waitForQueuedThread(lock, t1);
341	>	assertEquals(1, lock.getQueuedThreads().size());
342	>	assertTrue(lock.getQueuedThreads().contains(t1));
343	>	t2.start();
344	>	waitForQueuedThread(lock, t2);
345	>	assertEquals(2, lock.getQueuedThreads().size());
346	>	assertTrue(lock.getQueuedThreads().contains(t1));
347	>	assertTrue(lock.getQueuedThreads().contains(t2));
348	>	t1.interrupt();
349	>	awaitTermination(t1);
350	>	assertFalse(lock.getQueuedThreads().contains(t1));
351	>	assertTrue(lock.getQueuedThreads().contains(t2));
352	>	assertEquals(1, lock.getQueuedThreads().size());
353	>	lock.unlock();
354	>	awaitTermination(t2);
355	>	assertTrue(lock.getQueuedThreads().isEmpty());
356		}
357
358	+	/**
359	+	* timed tryLock is interruptible
360	+	*/
361	+	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
362	+	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
363	+	public void testTryLock_Interruptible(boolean fair) {
364	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
365	+	lock.lock();
366	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
367	+	public void realRun() throws InterruptedException {
368	+	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
369	+	}});
370	+
371	+	waitForQueuedThread(lock, t);
372	+	t.interrupt();
373	+	awaitTermination(t);
374	+	releaseLock(lock);
375	+	}
376
377		/**
378	<	* TryLock on a locked lock fails
379	<	*/
380	<	public void testTryLockWhenLocked() {
381	<	final ReentrantLock lock = new ReentrantLock();
382	<	lock.lock();
383	<	Thread t = new Thread(new Runnable() {
384	<	public void run() {
385	<	threadAssertFalse(lock.tryLock());
386	<	}
387	<	});
388	<	try {
389	<	t.start();
390	<	t.join();
391	<	lock.unlock();
392	<	} catch(Exception e){
279	<	unexpectedException();
280	<	}
281	<	}
378	>	* tryLock on a locked lock fails
379	>	*/
380	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
381	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
382	>	public void testTryLockWhenLocked(boolean fair) {
383	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
384	>	lock.lock();
385	>	Thread t = newStartedThread(new CheckedRunnable() {
386	>	public void realRun() {
387	>	assertFalse(lock.tryLock());
388	>	}});
389	>
390	>	awaitTermination(t);
391	>	releaseLock(lock);
392	>	}
393
394		/**
395		* Timed tryLock on a locked lock times out
396		*/
397	<	public void testTryLock_Timeout() {
398	<	final ReentrantLock lock = new ReentrantLock();
399	<	lock.lock();
400	<	Thread t = new Thread(new Runnable() {
401	<	public void run() {
402	<	try {
403	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
404	<	} catch (Exception ex) {
405	<	threadUnexpectedException();
406	<	}
407	<	}
408	<	});
409	<	try {
410	<	t.start();
411	<	t.join();
301	<	lock.unlock();
302	<	} catch(Exception e){
303	<	unexpectedException();
304	<	}
305	<	}
306	<
307	<	/**
308	<	* getHoldCount returns number of recursive holds
309	<	*/
310	<	public void testGetHoldCount() {
311	<	ReentrantLock lock = new ReentrantLock();
312	<	for(int i = 1; i <= SIZE; i++) {
313	<	lock.lock();
314	<	assertEquals(i,lock.getHoldCount());
315	<	}
316	<	for(int i = SIZE; i > 0; i--) {
317	<	lock.unlock();
318	<	assertEquals(i-1,lock.getHoldCount());
319	<	}
397	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
398	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
399	>	public void testTryLock_Timeout(boolean fair) {
400	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
401	>	lock.lock();
402	>	Thread t = newStartedThread(new CheckedRunnable() {
403	>	public void realRun() throws InterruptedException {
404	>	long startTime = System.nanoTime();
405	>	long timeoutMillis = 10;
406	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
407	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
408	>	}});
409	>
410	>	awaitTermination(t);
411	>	releaseLock(lock);
412		}
413	<
322	<
413	>
414		/**
415	<	* isLocked is true when locked and false when not
415	>	* getHoldCount returns number of recursive holds
416		*/
417	<	public void testIsLocked() {
418	<	final ReentrantLock lock = new ReentrantLock();
419	<	lock.lock();
420	<	assertTrue(lock.isLocked());
421	<	lock.unlock();
422	<	assertFalse(lock.isLocked());
423	<	Thread t = new Thread(new Runnable() {
424	<	public void run() {
425	<	lock.lock();
426	<	try {
427	<	Thread.sleep(SMALL_DELAY_MS);
337	<	}
338	<	catch(Exception e) {
339	<	threadUnexpectedException();
340	<	}
341	<	lock.unlock();
342	<	}
343	<	});
344	<	try {
345	<	t.start();
346	<	Thread.sleep(SHORT_DELAY_MS);
347	<	assertTrue(lock.isLocked());
348	<	t.join();
349	<	assertFalse(lock.isLocked());
350	<	} catch(Exception e){
351	<	unexpectedException();
417	>	public void testGetHoldCount()      { testGetHoldCount(false); }
418	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
419	>	public void testGetHoldCount(boolean fair) {
420	>	ReentrantLock lock = new ReentrantLock(fair);
421	>	for (int i = 1; i <= SIZE; i++) {
422	>	lock.lock();
423	>	assertEquals(i, lock.getHoldCount());
424	>	}
425	>	for (int i = SIZE; i > 0; i--) {
426	>	lock.unlock();
427	>	assertEquals(i-1, lock.getHoldCount());
428		}
429		}
430
355	–
431		/**
432	<	* lockInterruptibly is interruptible.
432	>	* isLocked is true when locked and false when not
433		*/
434	<	public void testLockInterruptibly1() {
435	<	final ReentrantLock lock = new ReentrantLock();
436	<	lock.lock();
362	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
434	>	public void testIsLocked()      { testIsLocked(false); }
435	>	public void testIsLocked_fair() { testIsLocked(true); }
436	>	public void testIsLocked(boolean fair) {
437		try {
438	<	t.start();
439	<	t.interrupt();
438	>	final ReentrantLock lock = new ReentrantLock(fair);
439	>	assertFalse(lock.isLocked());
440	>	lock.lock();
441	>	assertTrue(lock.isLocked());
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444		lock.unlock();
445	<	t.join();
446	<	} catch(Exception e){
447	<	unexpectedException();
448	<	}
449	<	}
445	>	assertTrue(lock.isLocked());
446	>	lock.unlock();
447	>	assertFalse(lock.isLocked());
448	>	final CyclicBarrier barrier = new CyclicBarrier(2);
449	>	Thread t = newStartedThread(new CheckedRunnable() {
450	>	public void realRun() throws Exception {
451	>	lock.lock();
452	>	assertTrue(lock.isLocked());
453	>	barrier.await();
454	>	barrier.await();
455	>	lock.unlock();
456	>	}});
457	>
458	>	barrier.await();
459	>	assertTrue(lock.isLocked());
460	>	barrier.await();
461	>	awaitTermination(t);
462	>	assertFalse(lock.isLocked());
463	>	} catch (Exception fail) { threadUnexpectedException(fail); }
464	>	}
465
466		/**
467		* lockInterruptibly succeeds when unlocked, else is interruptible
468		*/
469	<	public void testLockInterruptibly2() {
470	<	final ReentrantLock lock = new ReentrantLock();
471	<	try {
472	<	lock.lockInterruptibly();
380	<	} catch(Exception e) {
381	<	unexpectedException();
382	<	}
383	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
469	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
470	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
471	>	public void testLockInterruptibly(boolean fair) {
472	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
473		try {
474	<	t.start();
475	<	t.interrupt();
476	<	assertTrue(lock.isLocked());
477	<	assertTrue(lock.isHeldByCurrentThread());
478	<	t.join();
479	<	} catch(Exception e){
480	<	unexpectedException();
481	<	}
474	>	lock.lockInterruptibly();
475	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
476	>	assertLockedByMoi(lock);
477	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
478	>	waitForQueuedThread(lock, t);
479	>	t.interrupt();
480	>	assertTrue(lock.isLocked());
481	>	assertTrue(lock.isHeldByCurrentThread());
482	>	awaitTermination(t);
483	>	releaseLock(lock);
484		}
485
486		/**
487		* Calling await without holding lock throws IllegalMonitorStateException
488		*/
489	<	public void testAwait_IllegalMonitor() {
490	<	final ReentrantLock lock = new ReentrantLock();
489	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
490	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
491	>	public void testAwait_IMSE(boolean fair) {
492	>	final ReentrantLock lock = new ReentrantLock(fair);
493		final Condition c = lock.newCondition();
494	<	try {
495	<	c.await();
496	<	shouldThrow();
497	<	}
498	<	catch (IllegalMonitorStateException success) {
499	<	}
500	<	catch (Exception ex) {
501	<	unexpectedException();
494	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
495	>	long startTime = System.nanoTime();
496	>	try {
497	>	await(c, awaitMethod);
498	>	shouldThrow();
499	>	} catch (IllegalMonitorStateException success) {
500	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
501	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
502		}
503		}
504
505		/**
506		* Calling signal without holding lock throws IllegalMonitorStateException
507		*/
508	<	public void testSignal_IllegalMonitor() {
509	<	final ReentrantLock lock = new ReentrantLock();
508	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
509	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
510	>	public void testSignal_IMSE(boolean fair) {
511	>	final ReentrantLock lock = new ReentrantLock(fair);
512		final Condition c = lock.newCondition();
513		try {
514		c.signal();
515		shouldThrow();
516	<	}
422	<	catch (IllegalMonitorStateException success) {
423	<	}
424	<	catch (Exception ex) {
425	<	unexpectedException();
426	<	}
516	>	} catch (IllegalMonitorStateException success) {}
517		}
518
519		/**
520		* awaitNanos without a signal times out
521		*/
522	<	public void testAwaitNanos_Timeout() {
523	<	final ReentrantLock lock = new ReentrantLock();
524	<	final Condition c = lock.newCondition();
522	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
523	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
524	>	public void testAwaitNanos_Timeout(boolean fair) {
525		try {
526	+	final ReentrantLock lock = new ReentrantLock(fair);
527	+	final Condition c = lock.newCondition();
528		lock.lock();
529	<	long t = c.awaitNanos(100);
530	<	assertTrue(t <= 0);
529	>	long startTime = System.nanoTime();
530	>	long timeoutMillis = 10;
531	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
532	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
533	>	assertTrue(nanosRemaining <= 0);
534	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
535		lock.unlock();
536	<	}
441	<	catch (Exception ex) {
442	<	unexpectedException();
443	<	}
536	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
537		}
538
539		/**
540	<	*  timed await without a signal times out
540	>	* timed await without a signal times out
541		*/
542	<	public void testAwait_Timeout() {
543	<	final ReentrantLock lock = new ReentrantLock();
544	<	final Condition c = lock.newCondition();
542	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
543	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
544	>	public void testAwait_Timeout(boolean fair) {
545		try {
546	+	final ReentrantLock lock = new ReentrantLock(fair);
547	+	final Condition c = lock.newCondition();
548		lock.lock();
549	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
549	>	long startTime = System.nanoTime();
550	>	long timeoutMillis = 10;
551	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
552	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
553		lock.unlock();
554	<	}
457	<	catch (Exception ex) {
458	<	unexpectedException();
459	<	}
554	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
555		}
556
557		/**
558		* awaitUntil without a signal times out
559		*/
560	<	public void testAwaitUntil_Timeout() {
561	<	final ReentrantLock lock = new ReentrantLock();
562	<	final Condition c = lock.newCondition();
560	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
561	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
562	>	public void testAwaitUntil_Timeout(boolean fair) {
563		try {
564	+	final ReentrantLock lock = new ReentrantLock(fair);
565	+	final Condition c = lock.newCondition();
566		lock.lock();
567	+	long startTime = System.nanoTime();
568	+	long timeoutMillis = 10;
569		java.util.Date d = new java.util.Date();
570	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
570	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
571	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
572		lock.unlock();
573	<	}
474	<	catch (Exception ex) {
475	<	unexpectedException();
476	<	}
573	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
574		}
575
576		/**
577		* await returns when signalled
578		*/
579	<	public void testAwait() {
580	<	final ReentrantLock lock = new ReentrantLock();
579	>	public void testAwait()      { testAwait(false); }
580	>	public void testAwait_fair() { testAwait(true); }
581	>	public void testAwait(boolean fair) {
582	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
583		final Condition c = lock.newCondition();
584	<	Thread t = new Thread(new Runnable() {
585	<	public void run() {
586	<	try {
587	<	lock.lock();
588	<	c.await();
589	<	lock.unlock();
590	<	}
591	<	catch(InterruptedException e) {
592	<	threadUnexpectedException();
593	<	}
594	<	}
595	<	});
596	<
597	<	try {
598	<	t.start();
599	<	Thread.sleep(SHORT_DELAY_MS);
600	<	lock.lock();
502	<	c.signal();
503	<	lock.unlock();
504	<	t.join(SHORT_DELAY_MS);
505	<	assertFalse(t.isAlive());
506	<	}
507	<	catch (Exception ex) {
508	<	unexpectedException();
509	<	}
584	>	final CountDownLatch locked = new CountDownLatch(1);
585	>	Thread t = newStartedThread(new CheckedRunnable() {
586	>	public void realRun() throws InterruptedException {
587	>	lock.lock();
588	>	locked.countDown();
589	>	c.await();
590	>	lock.unlock();
591	>	}});
592	>
593	>	await(locked);
594	>	lock.lock();
595	>	assertHasWaiters(lock, c, t);
596	>	c.signal();
597	>	assertHasNoWaiters(lock, c);
598	>	assertTrue(t.isAlive());
599	>	lock.unlock();
600	>	awaitTermination(t);
601		}
602
603		/**
604		* hasWaiters throws NPE if null
605		*/
606	<	public void testHasWaitersNPE() {
607	<	final ReentrantLock lock = new ReentrantLock();
606	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
607	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
608	>	public void testHasWaitersNPE(boolean fair) {
609	>	final ReentrantLock lock = new ReentrantLock(fair);
610		try {
611		lock.hasWaiters(null);
612		shouldThrow();
613	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
613	>	} catch (NullPointerException success) {}
614		}
615
616		/**
617		* getWaitQueueLength throws NPE if null
618		*/
619	<	public void testGetWaitQueueLengthNPE() {
620	<	final ReentrantLock lock = new ReentrantLock();
619	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
620	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
621	>	public void testGetWaitQueueLengthNPE(boolean fair) {
622	>	final ReentrantLock lock = new ReentrantLock(fair);
623		try {
624		lock.getWaitQueueLength(null);
625		shouldThrow();
626	<	} catch (NullPointerException success) {
535	<	} catch (Exception ex) {
536	<	unexpectedException();
537	<	}
626	>	} catch (NullPointerException success) {}
627		}
628
540	–
629		/**
630		* getWaitingThreads throws NPE if null
631		*/
632	<	public void testGetWaitingThreadsNPE() {
633	<	final PublicReentrantLock lock = new PublicReentrantLock();
632	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
633	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
634	>	public void testGetWaitingThreadsNPE(boolean fair) {
635	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
636		try {
637		lock.getWaitingThreads(null);
638		shouldThrow();
639	<	} catch (NullPointerException success) {
550	<	} catch (Exception ex) {
551	<	unexpectedException();
552	<	}
639	>	} catch (NullPointerException success) {}
640		}
641
555	–
642		/**
643	<	* hasWaiters throws IAE if not owned
643	>	* hasWaiters throws IllegalArgumentException if not owned
644		*/
645	<	public void testHasWaitersIAE() {
646	<	final ReentrantLock lock = new ReentrantLock();
647	<	final Condition c = (lock.newCondition());
648	<	final ReentrantLock lock2 = new ReentrantLock();
645	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
646	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
647	>	public void testHasWaitersIAE(boolean fair) {
648	>	final ReentrantLock lock = new ReentrantLock(fair);
649	>	final Condition c = lock.newCondition();
650	>	final ReentrantLock lock2 = new ReentrantLock(fair);
651		try {
652		lock2.hasWaiters(c);
653		shouldThrow();
654	<	} catch (IllegalArgumentException success) {
567	<	} catch (Exception ex) {
568	<	unexpectedException();
569	<	}
654	>	} catch (IllegalArgumentException success) {}
655		}
656
657		/**
658	<	* hasWaiters throws IMSE if not locked
658	>	* hasWaiters throws IllegalMonitorStateException if not locked
659		*/
660	<	public void testHasWaitersIMSE() {
661	<	final ReentrantLock lock = new ReentrantLock();
662	<	final Condition c = (lock.newCondition());
660	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
661	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
662	>	public void testHasWaitersIMSE(boolean fair) {
663	>	final ReentrantLock lock = new ReentrantLock(fair);
664	>	final Condition c = lock.newCondition();
665		try {
666		lock.hasWaiters(c);
667		shouldThrow();
668	<	} catch (IllegalMonitorStateException success) {
582	<	} catch (Exception ex) {
583	<	unexpectedException();
584	<	}
668	>	} catch (IllegalMonitorStateException success) {}
669		}
670
587	–
671		/**
672	<	* getWaitQueueLength throws IAE if not owned
672	>	* getWaitQueueLength throws IllegalArgumentException if not owned
673		*/
674	<	public void testGetWaitQueueLengthIAE() {
675	<	final ReentrantLock lock = new ReentrantLock();
676	<	final Condition c = (lock.newCondition());
677	<	final ReentrantLock lock2 = new ReentrantLock();
674	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
675	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
676	>	public void testGetWaitQueueLengthIAE(boolean fair) {
677	>	final ReentrantLock lock = new ReentrantLock(fair);
678	>	final Condition c = lock.newCondition();
679	>	final ReentrantLock lock2 = new ReentrantLock(fair);
680		try {
681		lock2.getWaitQueueLength(c);
682		shouldThrow();
683	<	} catch (IllegalArgumentException success) {
599	<	} catch (Exception ex) {
600	<	unexpectedException();
601	<	}
683	>	} catch (IllegalArgumentException success) {}
684		}
685
686		/**
687	<	* getWaitQueueLength throws IMSE if not locked
687	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
688		*/
689	<	public void testGetWaitQueueLengthIMSE() {
690	<	final ReentrantLock lock = new ReentrantLock();
691	<	final Condition c = (lock.newCondition());
689	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
690	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
691	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
692	>	final ReentrantLock lock = new ReentrantLock(fair);
693	>	final Condition c = lock.newCondition();
694		try {
695		lock.getWaitQueueLength(c);
696		shouldThrow();
697	<	} catch (IllegalMonitorStateException success) {
614	<	} catch (Exception ex) {
615	<	unexpectedException();
616	<	}
697	>	} catch (IllegalMonitorStateException success) {}
698		}
699
619	–
700		/**
701	<	* getWaitingThreads throws IAE if not owned
701	>	* getWaitingThreads throws IllegalArgumentException if not owned
702		*/
703	<	public void testGetWaitingThreadsIAE() {
704	<	final PublicReentrantLock lock = new PublicReentrantLock();
705	<	final Condition c = (lock.newCondition());
706	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
703	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
704	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
705	>	public void testGetWaitingThreadsIAE(boolean fair) {
706	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
707	>	final Condition c = lock.newCondition();
708	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
709		try {
710		lock2.getWaitingThreads(c);
711		shouldThrow();
712	<	} catch (IllegalArgumentException success) {
631	<	} catch (Exception ex) {
632	<	unexpectedException();
633	<	}
712	>	} catch (IllegalArgumentException success) {}
713		}
714
715		/**
716	<	* getWaitingThreads throws IMSE if not locked
716	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
717		*/
718	<	public void testGetWaitingThreadsIMSE() {
719	<	final PublicReentrantLock lock = new PublicReentrantLock();
720	<	final Condition c = (lock.newCondition());
718	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
719	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
720	>	public void testGetWaitingThreadsIMSE(boolean fair) {
721	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
722	>	final Condition c = lock.newCondition();
723		try {
724		lock.getWaitingThreads(c);
725		shouldThrow();
726	<	} catch (IllegalMonitorStateException success) {
646	<	} catch (Exception ex) {
647	<	unexpectedException();
648	<	}
726	>	} catch (IllegalMonitorStateException success) {}
727		}
728
651	–
652	–
729		/**
730		* hasWaiters returns true when a thread is waiting, else false
731		*/
732	<	public void testHasWaiters() {
733	<	final ReentrantLock lock = new ReentrantLock();
732	>	public void testHasWaiters()      { testHasWaiters(false); }
733	>	public void testHasWaiters_fair() { testHasWaiters(true); }
734	>	public void testHasWaiters(boolean fair) {
735	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
736		final Condition c = lock.newCondition();
737	<	Thread t = new Thread(new Runnable() {
738	<	public void run() {
739	<	try {
740	<	lock.lock();
741	<	threadAssertFalse(lock.hasWaiters(c));
742	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
743	<	c.await();
744	<	lock.unlock();
745	<	}
746	<	catch(InterruptedException e) {
747	<	threadUnexpectedException();
748	<	}
749	<	}
750	<	});
751	<
752	<	try {
753	<	t.start();
754	<	Thread.sleep(SHORT_DELAY_MS);
755	<	lock.lock();
756	<	assertTrue(lock.hasWaiters(c));
757	<	assertEquals(1, lock.getWaitQueueLength(c));
758	<	c.signal();
759	<	lock.unlock();
682	<	Thread.sleep(SHORT_DELAY_MS);
683	<	lock.lock();
684	<	assertFalse(lock.hasWaiters(c));
685	<	assertEquals(0, lock.getWaitQueueLength(c));
686	<	lock.unlock();
687	<	t.join(SHORT_DELAY_MS);
688	<	assertFalse(t.isAlive());
689	<	}
690	<	catch (Exception ex) {
691	<	unexpectedException();
692	<	}
737	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
738	>	Thread t = newStartedThread(new CheckedRunnable() {
739	>	public void realRun() throws InterruptedException {
740	>	lock.lock();
741	>	assertHasNoWaiters(lock, c);
742	>	assertFalse(lock.hasWaiters(c));
743	>	pleaseSignal.countDown();
744	>	c.await();
745	>	assertHasNoWaiters(lock, c);
746	>	assertFalse(lock.hasWaiters(c));
747	>	lock.unlock();
748	>	}});
749	>
750	>	await(pleaseSignal);
751	>	lock.lock();
752	>	assertHasWaiters(lock, c, t);
753	>	assertTrue(lock.hasWaiters(c));
754	>	c.signal();
755	>	assertHasNoWaiters(lock, c);
756	>	assertFalse(lock.hasWaiters(c));
757	>	lock.unlock();
758	>	awaitTermination(t);
759	>	assertHasNoWaiters(lock, c);
760		}
761
762		/**
763		* getWaitQueueLength returns number of waiting threads
764		*/
765	<	public void testGetWaitQueueLength() {
766	<	final ReentrantLock lock = new ReentrantLock();
765	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
766	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
767	>	public void testGetWaitQueueLength(boolean fair) {
768	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
769		final Condition c = lock.newCondition();
770	<	Thread t1 = new Thread(new Runnable() {
771	<	public void run() {
772	<	try {
773	<	lock.lock();
774	<	threadAssertFalse(lock.hasWaiters(c));
775	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
776	<	c.await();
777	<	lock.unlock();
778	<	}
779	<	catch(InterruptedException e) {
780	<	threadUnexpectedException();
781	<	}
782	<	}
783	<	});
784	<
785	<	Thread t2 = new Thread(new Runnable() {
786	<	public void run() {
787	<	try {
788	<	lock.lock();
789	<	threadAssertTrue(lock.hasWaiters(c));
790	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
791	<	c.await();
792	<	lock.unlock();
793	<	}
794	<	catch(InterruptedException e) {
795	<	threadUnexpectedException();
796	<	}
797	<	}
798	<	});
770	>	final CountDownLatch locked1 = new CountDownLatch(1);
771	>	final CountDownLatch locked2 = new CountDownLatch(1);
772	>	Thread t1 = new Thread(new CheckedRunnable() {
773	>	public void realRun() throws InterruptedException {
774	>	lock.lock();
775	>	assertFalse(lock.hasWaiters(c));
776	>	assertEquals(0, lock.getWaitQueueLength(c));
777	>	locked1.countDown();
778	>	c.await();
779	>	lock.unlock();
780	>	}});
781	>
782	>	Thread t2 = new Thread(new CheckedRunnable() {
783	>	public void realRun() throws InterruptedException {
784	>	lock.lock();
785	>	assertTrue(lock.hasWaiters(c));
786	>	assertEquals(1, lock.getWaitQueueLength(c));
787	>	locked2.countDown();
788	>	c.await();
789	>	lock.unlock();
790	>	}});
791	>
792	>	lock.lock();
793	>	assertEquals(0, lock.getWaitQueueLength(c));
794	>	lock.unlock();
795	>
796	>	t1.start();
797	>	await(locked1);
798	>
799	>	lock.lock();
800	>	assertHasWaiters(lock, c, t1);
801	>	assertEquals(1, lock.getWaitQueueLength(c));
802	>	lock.unlock();
803	>
804	>	t2.start();
805	>	await(locked2);
806	>
807	>	lock.lock();
808	>	assertHasWaiters(lock, c, t1, t2);
809	>	assertEquals(2, lock.getWaitQueueLength(c));
810	>	c.signalAll();
811	>	assertHasNoWaiters(lock, c);
812	>	lock.unlock();
813
814	<	try {
815	<	t1.start();
816	<	Thread.sleep(SHORT_DELAY_MS);
817	<	t2.start();
735	<	Thread.sleep(SHORT_DELAY_MS);
736	<	lock.lock();
737	<	assertTrue(lock.hasWaiters(c));
738	<	assertEquals(2, lock.getWaitQueueLength(c));
739	<	c.signalAll();
740	<	lock.unlock();
741	<	Thread.sleep(SHORT_DELAY_MS);
742	<	lock.lock();
743	<	assertFalse(lock.hasWaiters(c));
744	<	assertEquals(0, lock.getWaitQueueLength(c));
745	<	lock.unlock();
746	<	t1.join(SHORT_DELAY_MS);
747	<	t2.join(SHORT_DELAY_MS);
748	<	assertFalse(t1.isAlive());
749	<	assertFalse(t2.isAlive());
750	<	}
751	<	catch (Exception ex) {
752	<	unexpectedException();
753	<	}
814	>	awaitTermination(t1);
815	>	awaitTermination(t2);
816	>
817	>	assertHasNoWaiters(lock, c);
818		}
819
820		/**
821		* getWaitingThreads returns only and all waiting threads
822		*/
823	<	public void testGetWaitingThreads() {
824	<	final PublicReentrantLock lock = new PublicReentrantLock();
823	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
824	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
825	>	public void testGetWaitingThreads(boolean fair) {
826	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
827		final Condition c = lock.newCondition();
828	<	Thread t1 = new Thread(new Runnable() {
829	<	public void run() {
830	<	try {
831	<	lock.lock();
832	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
833	<	c.await();
834	<	lock.unlock();
835	<	}
836	<	catch(InterruptedException e) {
837	<	threadUnexpectedException();
838	<	}
839	<	}
840	<	});
841	<
842	<	Thread t2 = new Thread(new Runnable() {
843	<	public void run() {
844	<	try {
845	<	lock.lock();
846	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
847	<	c.await();
848	<	lock.unlock();
849	<	}
850	<	catch(InterruptedException e) {
851	<	threadUnexpectedException();
852	<	}
853	<	}
854	<	});
855	<
856	<	try {
857	<	lock.lock();
858	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
859	<	lock.unlock();
860	<	t1.start();
861	<	Thread.sleep(SHORT_DELAY_MS);
862	<	t2.start();
863	<	Thread.sleep(SHORT_DELAY_MS);
864	<	lock.lock();
865	<	assertTrue(lock.hasWaiters(c));
866	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
867	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
868	<	c.signalAll();
869	<	lock.unlock();
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	lock.lock();
872	<	assertFalse(lock.hasWaiters(c));
873	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
874	<	lock.unlock();
875	<	t1.join(SHORT_DELAY_MS);
876	<	t2.join(SHORT_DELAY_MS);
877	<	assertFalse(t1.isAlive());
812	<	assertFalse(t2.isAlive());
813	<	}
814	<	catch (Exception ex) {
815	<	unexpectedException();
816	<	}
828	>	final CountDownLatch locked1 = new CountDownLatch(1);
829	>	final CountDownLatch locked2 = new CountDownLatch(1);
830	>	Thread t1 = new Thread(new CheckedRunnable() {
831	>	public void realRun() throws InterruptedException {
832	>	lock.lock();
833	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
834	>	locked1.countDown();
835	>	c.await();
836	>	lock.unlock();
837	>	}});
838	>
839	>	Thread t2 = new Thread(new CheckedRunnable() {
840	>	public void realRun() throws InterruptedException {
841	>	lock.lock();
842	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
843	>	locked2.countDown();
844	>	c.await();
845	>	lock.unlock();
846	>	}});
847	>
848	>	lock.lock();
849	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
850	>	lock.unlock();
851	>
852	>	t1.start();
853	>	await(locked1);
854	>
855	>	lock.lock();
856	>	assertHasWaiters(lock, c, t1);
857	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
858	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
859	>	assertEquals(1, lock.getWaitingThreads(c).size());
860	>	lock.unlock();
861	>
862	>	t2.start();
863	>	await(locked2);
864	>
865	>	lock.lock();
866	>	assertHasWaiters(lock, c, t1, t2);
867	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
868	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
869	>	assertEquals(2, lock.getWaitingThreads(c).size());
870	>	c.signalAll();
871	>	assertHasNoWaiters(lock, c);
872	>	lock.unlock();
873	>
874	>	awaitTermination(t1);
875	>	awaitTermination(t2);
876	>
877	>	assertHasNoWaiters(lock, c);
878		}
879
819	–
820	–
880		/**
881	<	* awaitUninterruptibly doesn't abort on interrupt
882	<	*/
883	<	public void testAwaitUninterruptibly() {
884	<	final ReentrantLock lock = new ReentrantLock();
881	>	* awaitUninterruptibly is uninterruptible
882	>	*/
883	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
884	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
885	>	public void testAwaitUninterruptibly(boolean fair) {
886	>	final ReentrantLock lock = new ReentrantLock(fair);
887		final Condition c = lock.newCondition();
888	<	Thread t = new Thread(new Runnable() {
828	<	public void run() {
829	<	lock.lock();
830	<	c.awaitUninterruptibly();
831	<	lock.unlock();
832	<	}
833	<	});
888	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
889
890	<	try {
891	<	t.start();
892	<	Thread.sleep(SHORT_DELAY_MS);
893	<	t.interrupt();
894	<	lock.lock();
895	<	c.signal();
896	<	lock.unlock();
897	<	assert(t.isInterrupted());
898	<	t.join(SHORT_DELAY_MS);
899	<	assertFalse(t.isAlive());
900	<	}
901	<	catch (Exception ex) {
902	<	unexpectedException();
903	<	}
890	>	Thread t1 = newStartedThread(new CheckedRunnable() {
891	>	public void realRun() {
892	>	// Interrupt before awaitUninterruptibly
893	>	lock.lock();
894	>	pleaseInterrupt.countDown();
895	>	Thread.currentThread().interrupt();
896	>	c.awaitUninterruptibly();
897	>	assertTrue(Thread.interrupted());
898	>	lock.unlock();
899	>	}});
900	>
901	>	Thread t2 = newStartedThread(new CheckedRunnable() {
902	>	public void realRun() {
903	>	// Interrupt during awaitUninterruptibly
904	>	lock.lock();
905	>	pleaseInterrupt.countDown();
906	>	c.awaitUninterruptibly();
907	>	assertTrue(Thread.interrupted());
908	>	lock.unlock();
909	>	}});
910	>
911	>	await(pleaseInterrupt);
912	>	lock.lock();
913	>	lock.unlock();
914	>	t2.interrupt();
915	>
916	>	assertThreadStaysAlive(t1);
917	>	assertTrue(t2.isAlive());
918	>
919	>	lock.lock();
920	>	c.signalAll();
921	>	lock.unlock();
922	>
923	>	awaitTermination(t1);
924	>	awaitTermination(t2);
925		}
926
927		/**
928	<	* await is interruptible
929	<	*/
930	<	public void testAwait_Interrupt() {
931	<	final ReentrantLock lock = new ReentrantLock();
928	>	* await/awaitNanos/awaitUntil is interruptible
929	>	*/
930	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
931	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
932	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
933	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
934	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
935	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
936	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
937	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
938	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
939	>	final PublicReentrantLock lock =
940	>	new PublicReentrantLock(fair);
941		final Condition c = lock.newCondition();
942	<	Thread t = new Thread(new Runnable() {
943	<	public void run() {
944	<	try {
945	<	lock.lock();
946	<	c.await();
947	<	lock.unlock();
948	<	threadShouldThrow();
949	<	}
950	<	catch(InterruptedException success) {
951	<	}
952	<	}
953	<	});
954	<
955	<	try {
956	<	t.start();
957	<	Thread.sleep(SHORT_DELAY_MS);
958	<	t.interrupt();
959	<	t.join(SHORT_DELAY_MS);
960	<	assertFalse(t.isAlive());
961	<	}
962	<	catch (Exception ex) {
963	<	unexpectedException();
879	<	}
942	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
943	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
944	>	public void realRun() throws InterruptedException {
945	>	lock.lock();
946	>	assertLockedByMoi(lock);
947	>	assertHasNoWaiters(lock, c);
948	>	pleaseInterrupt.countDown();
949	>	try {
950	>	await(c, awaitMethod);
951	>	} finally {
952	>	assertLockedByMoi(lock);
953	>	assertHasNoWaiters(lock, c);
954	>	lock.unlock();
955	>	assertFalse(Thread.interrupted());
956	>	}
957	>	}});
958	>
959	>	await(pleaseInterrupt);
960	>	assertHasWaiters(lock, c, t);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	assertNotLocked(lock);
964		}
965
966		/**
967	<	* awaitNanos is interruptible
967	>	* signalAll wakes up all threads
968		*/
969	<	public void testAwaitNanos_Interrupt() {
970	<	final ReentrantLock lock = new ReentrantLock();
969	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
970	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
971	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
972	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
973	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
974	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
975	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
976	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
977	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
978	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
979		final Condition c = lock.newCondition();
980	<	Thread t = new Thread(new Runnable() {
981	<	public void run() {
982	<	try {
983	<	lock.lock();
984	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
985	<	lock.unlock();
986	<	threadShouldThrow();
987	<	}
988	<	catch(InterruptedException success) {
989	<	}
990	<	}
991	<	});
992	<
993	<	try {
994	<	t.start();
995	<	Thread.sleep(SHORT_DELAY_MS);
996	<	t.interrupt();
997	<	t.join(SHORT_DELAY_MS);
998	<	assertFalse(t.isAlive());
999	<	}
1000	<	catch (Exception ex) {
909	<	unexpectedException();
910	<	}
980	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
981	>	class Awaiter extends CheckedRunnable {
982	>	public void realRun() throws InterruptedException {
983	>	lock.lock();
984	>	pleaseSignal.countDown();
985	>	await(c, awaitMethod);
986	>	lock.unlock();
987	>	}
988	>	}
989	>
990	>	Thread t1 = newStartedThread(new Awaiter());
991	>	Thread t2 = newStartedThread(new Awaiter());
992	>
993	>	await(pleaseSignal);
994	>	lock.lock();
995	>	assertHasWaiters(lock, c, t1, t2);
996	>	c.signalAll();
997	>	assertHasNoWaiters(lock, c);
998	>	lock.unlock();
999	>	awaitTermination(t1);
1000	>	awaitTermination(t2);
1001		}
1002
1003		/**
1004	<	* awaitUntil is interruptible
1005	<	*/
1006	<	public void testAwaitUntil_Interrupt() {
1007	<	final ReentrantLock lock = new ReentrantLock();
1004	>	* signal wakes up waiting threads in FIFO order
1005	>	*/
1006	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1007	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1008	>	public void testSignalWakesFifo(boolean fair) {
1009	>	final PublicReentrantLock lock =
1010	>	new PublicReentrantLock(fair);
1011		final Condition c = lock.newCondition();
1012	<	Thread t = new Thread(new Runnable() {
1013	<	public void run() {
1014	<	try {
1015	<	lock.lock();
1016	<	java.util.Date d = new java.util.Date();
1017	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1018	<	lock.unlock();
1019	<	threadShouldThrow();
1020	<	}
1021	<	catch(InterruptedException success) {
1022	<	}
1023	<	}
1024	<	});
1025	<
1026	<	try {
1027	<	t.start();
1028	<	Thread.sleep(SHORT_DELAY_MS);
1029	<	t.interrupt();
1030	<	t.join(SHORT_DELAY_MS);
1031	<	assertFalse(t.isAlive());
1032	<	}
1033	<	catch (Exception ex) {
1034	<	unexpectedException();
1035	<	}
1012	>	final CountDownLatch locked1 = new CountDownLatch(1);
1013	>	final CountDownLatch locked2 = new CountDownLatch(1);
1014	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1015	>	public void realRun() throws InterruptedException {
1016	>	lock.lock();
1017	>	locked1.countDown();
1018	>	c.await();
1019	>	lock.unlock();
1020	>	}});
1021	>
1022	>	await(locked1);
1023	>
1024	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1025	>	public void realRun() throws InterruptedException {
1026	>	lock.lock();
1027	>	locked2.countDown();
1028	>	c.await();
1029	>	lock.unlock();
1030	>	}});
1031	>
1032	>	await(locked2);
1033	>
1034	>	lock.lock();
1035	>	assertHasWaiters(lock, c, t1, t2);
1036	>	assertFalse(lock.hasQueuedThreads());
1037	>	c.signal();
1038	>	assertHasWaiters(lock, c, t2);
1039	>	assertTrue(lock.hasQueuedThread(t1));
1040	>	assertFalse(lock.hasQueuedThread(t2));
1041	>	c.signal();
1042	>	assertHasNoWaiters(lock, c);
1043	>	assertTrue(lock.hasQueuedThread(t1));
1044	>	assertTrue(lock.hasQueuedThread(t2));
1045	>	lock.unlock();
1046	>	awaitTermination(t1);
1047	>	awaitTermination(t2);
1048		}
1049
1050		/**
1051	<	* signalAll wakes up all threads
1052	<	*/
1053	<	public void testSignalAll() {
1054	<	final ReentrantLock lock = new ReentrantLock();
1051	>	* await after multiple reentrant locking preserves lock count
1052	>	*/
1053	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1054	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1055	>	public void testAwaitLockCount(boolean fair) {
1056	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1057		final Condition c = lock.newCondition();
1058	<	Thread t1 = new Thread(new Runnable() {
1059	<	public void run() {
1060	<	try {
1061	<	lock.lock();
1062	<	c.await();
1063	<	lock.unlock();
1064	<	}
1065	<	catch(InterruptedException e) {
1066	<	threadUnexpectedException();
1067	<	}
1068	<	}
1069	<	});
1070	<
1071	<	Thread t2 = new Thread(new Runnable() {
1072	<	public void run() {
1073	<	try {
1074	<	lock.lock();
1075	<	c.await();
1076	<	lock.unlock();
1077	<	}
1078	<	catch(InterruptedException e) {
1079	<	threadUnexpectedException();
1080	<	}
1081	<	}
1082	<	});
1083	<
1084	<	try {
1085	<	t1.start();
1086	<	t2.start();
1087	<	Thread.sleep(SHORT_DELAY_MS);
1088	<	lock.lock();
1089	<	c.signalAll();
1090	<	lock.unlock();
1091	<	t1.join(SHORT_DELAY_MS);
1092	<	t2.join(SHORT_DELAY_MS);
1093	<	assertFalse(t1.isAlive());
987	<	assertFalse(t2.isAlive());
988	<	}
989	<	catch (Exception ex) {
990	<	unexpectedException();
991	<	}
1058	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1059	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1060	>	public void realRun() throws InterruptedException {
1061	>	lock.lock();
1062	>	assertLockedByMoi(lock);
1063	>	assertEquals(1, lock.getHoldCount());
1064	>	pleaseSignal.countDown();
1065	>	c.await();
1066	>	assertLockedByMoi(lock);
1067	>	assertEquals(1, lock.getHoldCount());
1068	>	lock.unlock();
1069	>	}});
1070	>
1071	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1072	>	public void realRun() throws InterruptedException {
1073	>	lock.lock();
1074	>	lock.lock();
1075	>	assertLockedByMoi(lock);
1076	>	assertEquals(2, lock.getHoldCount());
1077	>	pleaseSignal.countDown();
1078	>	c.await();
1079	>	assertLockedByMoi(lock);
1080	>	assertEquals(2, lock.getHoldCount());
1081	>	lock.unlock();
1082	>	lock.unlock();
1083	>	}});
1084	>
1085	>	await(pleaseSignal);
1086	>	lock.lock();
1087	>	assertHasWaiters(lock, c, t1, t2);
1088	>	assertEquals(1, lock.getHoldCount());
1089	>	c.signalAll();
1090	>	assertHasNoWaiters(lock, c);
1091	>	lock.unlock();
1092	>	awaitTermination(t1);
1093	>	awaitTermination(t2);
1094		}
1095
1096		/**
1097		* A serialized lock deserializes as unlocked
1098		*/
1099	<	public void testSerialization() {
1100	<	ReentrantLock l = new ReentrantLock();
1101	<	l.lock();
1102	<	l.unlock();
1103	<
1104	<	try {
1105	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1106	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1107	<	out.writeObject(l);
1108	<	out.close();
1109	<
1110	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1111	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1112	<	ReentrantLock r = (ReentrantLock) in.readObject();
1113	<	r.lock();
1114	<	r.unlock();
1115	<	} catch(Exception e){
1116	<	e.printStackTrace();
1117	<	unexpectedException();
1118	<	}
1099	>	public void testSerialization()      { testSerialization(false); }
1100	>	public void testSerialization_fair() { testSerialization(true); }
1101	>	public void testSerialization(boolean fair) {
1102	>	ReentrantLock lock = new ReentrantLock(fair);
1103	>	lock.lock();
1104	>
1105	>	ReentrantLock clone = serialClone(lock);
1106	>	assertEquals(lock.isFair(), clone.isFair());
1107	>	assertTrue(lock.isLocked());
1108	>	assertFalse(clone.isLocked());
1109	>	assertEquals(1, lock.getHoldCount());
1110	>	assertEquals(0, clone.getHoldCount());
1111	>	clone.lock();
1112	>	clone.lock();
1113	>	assertTrue(clone.isLocked());
1114	>	assertEquals(2, clone.getHoldCount());
1115	>	assertEquals(1, lock.getHoldCount());
1116	>	clone.unlock();
1117	>	clone.unlock();
1118	>	assertTrue(lock.isLocked());
1119	>	assertFalse(clone.isLocked());
1120		}
1121
1122	+	/**
1123	+	* toString indicates current lock state
1124	+	*/
1125	+	public void testToString()      { testToString(false); }
1126	+	public void testToString_fair() { testToString(true); }
1127	+	public void testToString(boolean fair) {
1128	+	ReentrantLock lock = new ReentrantLock(fair);
1129	+	assertTrue(lock.toString().contains("Unlocked"));
1130	+	lock.lock();
1131	+	assertTrue(lock.toString().contains("Locked"));
1132	+	lock.unlock();
1133	+	assertTrue(lock.toString().contains("Unlocked"));
1134	+	}
1135		}

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