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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.17 by dl, Wed Jan 7 20:49:53 2004 UTC vs.
Revision 1.54 by jsr166, Wed Dec 31 19:05:43 2014 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
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){}
37	>	public void realRun() throws InterruptedException {
38	>	lock.lockInterruptibly();
39		}
40		}
41
36	–
42		/**
43		* A 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){}
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	>	}
170		}
171
172	+	/**
173	+	* Constructor sets given fairness, and is in unlocked state
174	+	*/
175	+	public void testConstructor() {
176	+	PublicReentrantLock lock;
177	+
178	+	lock = new PublicReentrantLock();
179	+	assertFalse(lock.isFair());
180	+	assertNotLocked(lock);
181	+
182	+	lock = new PublicReentrantLock(true);
183	+	assertTrue(lock.isFair());
184	+	assertNotLocked(lock);
185	+
186	+	lock = new PublicReentrantLock(false);
187	+	assertFalse(lock.isFair());
188	+	assertNotLocked(lock);
189	+	}
190
191		/**
192	<	* hasQueuedThreads reports whether there are waiting threads
192	>	* locking an unlocked lock succeeds
193		*/
194	<	public void testhasQueuedThreads() {
195	<	final ReentrantLock lock = new ReentrantLock();
196	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
197	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
194	>	public void testLock()      { testLock(false); }
195	>	public void testLock_fair() { testLock(true); }
196	>	public void testLock(boolean fair) {
197	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
198	>	lock.lock();
199	>	assertLockedByMoi(lock);
200	>	releaseLock(lock);
201	>	}
202	>
203	>	/**
204	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
205	>	*/
206	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
207	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
208	>	public void testUnlock_IMSE(boolean fair) {
209	>	ReentrantLock lock = new ReentrantLock(fair);
210		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());
211		lock.unlock();
212	<	Thread.sleep(SHORT_DELAY_MS);
213	<	assertFalse(lock.hasQueuedThreads());
214	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
212	>	shouldThrow();
213	>	} catch (IllegalMonitorStateException success) {}
214	>	}
215
216		/**
217	<	* getQueueLength reports number of waiting threads
217	>	* tryLock on an unlocked lock succeeds
218	>	*/
219	>	public void testTryLock()      { testTryLock(false); }
220	>	public void testTryLock_fair() { testTryLock(true); }
221	>	public void testTryLock(boolean fair) {
222	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
223	>	assertTrue(lock.tryLock());
224	>	assertLockedByMoi(lock);
225	>	assertTrue(lock.tryLock());
226	>	assertLockedByMoi(lock);
227	>	lock.unlock();
228	>	releaseLock(lock);
229	>	}
230	>
231	>	/**
232	>	* hasQueuedThreads reports whether there are waiting threads
233		*/
234	<	public void testGetQueueLength() {
235	<	final ReentrantLock lock = new ReentrantLock();
234	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
235	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
236	>	public void testHasQueuedThreads(boolean fair) {
237	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
238		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
239		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
240	<	try {
241	<	assertEquals(0, lock.getQueueLength());
242	<	lock.lock();
243	<	t1.start();
244	<	Thread.sleep(SHORT_DELAY_MS);
245	<	assertEquals(1, lock.getQueueLength());
246	<	t2.start();
247	<	Thread.sleep(SHORT_DELAY_MS);
248	<	assertEquals(2, lock.getQueueLength());
249	<	t1.interrupt();
250	<	Thread.sleep(SHORT_DELAY_MS);
251	<	assertEquals(1, lock.getQueueLength());
252	<	lock.unlock();
253	<	Thread.sleep(SHORT_DELAY_MS);
254	<	assertEquals(0, lock.getQueueLength());
255	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
240	>	assertFalse(lock.hasQueuedThreads());
241	>	lock.lock();
242	>	assertFalse(lock.hasQueuedThreads());
243	>	t1.start();
244	>	waitForQueuedThread(lock, t1);
245	>	assertTrue(lock.hasQueuedThreads());
246	>	t2.start();
247	>	waitForQueuedThread(lock, t2);
248	>	assertTrue(lock.hasQueuedThreads());
249	>	t1.interrupt();
250	>	awaitTermination(t1);
251	>	assertTrue(lock.hasQueuedThreads());
252	>	lock.unlock();
253	>	awaitTermination(t2);
254	>	assertFalse(lock.hasQueuedThreads());
255	>	}
256
257		/**
258		* getQueueLength reports number of waiting threads
259		*/
260	<	public void testGetQueueLength_fair() {
261	<	final ReentrantLock lock = new ReentrantLock(true);
260	>	public void testGetQueueLength()      { testGetQueueLength(false); }
261	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
262	>	public void testGetQueueLength(boolean fair) {
263	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
264		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
265		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
266	+	assertEquals(0, lock.getQueueLength());
267	+	lock.lock();
268	+	t1.start();
269	+	waitForQueuedThread(lock, t1);
270	+	assertEquals(1, lock.getQueueLength());
271	+	t2.start();
272	+	waitForQueuedThread(lock, t2);
273	+	assertEquals(2, lock.getQueueLength());
274	+	t1.interrupt();
275	+	awaitTermination(t1);
276	+	assertEquals(1, lock.getQueueLength());
277	+	lock.unlock();
278	+	awaitTermination(t2);
279	+	assertEquals(0, lock.getQueueLength());
280	+	}
281	+
282	+	/**
283	+	* hasQueuedThread(null) throws NPE
284	+	*/
285	+	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
286	+	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
287	+	public void testHasQueuedThreadNPE(boolean fair) {
288	+	final ReentrantLock lock = new ReentrantLock(fair);
289		try {
290	<	assertEquals(0, lock.getQueueLength());
291	<	lock.lock();
292	<	t1.start();
293	<	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	<	}
290	>	lock.hasQueuedThread(null);
291	>	shouldThrow();
292	>	} catch (NullPointerException success) {}
293	>	}
294
295		/**
296	<	* getQueuedThreads includes waiting threads
296	>	* hasQueuedThread reports whether a thread is queued
297		*/
298	<	public void testGetQueuedThreads() {
299	<	final PublicReentrantLock lock = new PublicReentrantLock();
298	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
299	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
300	>	public void testHasQueuedThread(boolean fair) {
301	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
302		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
303		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
304	<	try {
305	<	assertTrue(lock.getQueuedThreads().isEmpty());
306	<	lock.lock();
307	<	assertTrue(lock.getQueuedThreads().isEmpty());
308	<	t1.start();
309	<	Thread.sleep(SHORT_DELAY_MS);
310	<	assertTrue(lock.getQueuedThreads().contains(t1));
311	<	t2.start();
312	<	Thread.sleep(SHORT_DELAY_MS);
313	<	assertTrue(lock.getQueuedThreads().contains(t1));
314	<	assertTrue(lock.getQueuedThreads().contains(t2));
315	<	t1.interrupt();
316	<	Thread.sleep(SHORT_DELAY_MS);
317	<	assertFalse(lock.getQueuedThreads().contains(t1));
318	<	assertTrue(lock.getQueuedThreads().contains(t2));
319	<	lock.unlock();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	assertTrue(lock.getQueuedThreads().isEmpty());
322	<	t1.join();
323	<	t2.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
237	<	}
238	<
304	>	assertFalse(lock.hasQueuedThread(t1));
305	>	assertFalse(lock.hasQueuedThread(t2));
306	>	lock.lock();
307	>	t1.start();
308	>	waitForQueuedThread(lock, t1);
309	>	assertTrue(lock.hasQueuedThread(t1));
310	>	assertFalse(lock.hasQueuedThread(t2));
311	>	t2.start();
312	>	waitForQueuedThread(lock, t2);
313	>	assertTrue(lock.hasQueuedThread(t1));
314	>	assertTrue(lock.hasQueuedThread(t2));
315	>	t1.interrupt();
316	>	awaitTermination(t1);
317	>	assertFalse(lock.hasQueuedThread(t1));
318	>	assertTrue(lock.hasQueuedThread(t2));
319	>	lock.unlock();
320	>	awaitTermination(t2);
321	>	assertFalse(lock.hasQueuedThread(t1));
322	>	assertFalse(lock.hasQueuedThread(t2));
323	>	}
324
325		/**
326	<	* timed tryLock is interruptible.
326	>	* getQueuedThreads includes waiting threads
327		*/
328	<	public void testInterruptedException2() {
329	<	final ReentrantLock lock = new ReentrantLock();
330	<	lock.lock();
331	<	Thread t = new Thread(new Runnable() {
332	<	public void run() {
333	<	try {
334	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
335	<	threadShouldThrow();
336	<	} catch(InterruptedException success){}
337	<	}
338	<	});
339	<	try {
340	<	t.start();
341	<	t.interrupt();
342	<	} catch(Exception e){
343	<	unexpectedException();
344	<	}
328	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
329	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
330	>	public void testGetQueuedThreads(boolean fair) {
331	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
332	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
333	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
334	>	assertTrue(lock.getQueuedThreads().isEmpty());
335	>	lock.lock();
336	>	assertTrue(lock.getQueuedThreads().isEmpty());
337	>	t1.start();
338	>	waitForQueuedThread(lock, t1);
339	>	assertEquals(1, lock.getQueuedThreads().size());
340	>	assertTrue(lock.getQueuedThreads().contains(t1));
341	>	t2.start();
342	>	waitForQueuedThread(lock, t2);
343	>	assertEquals(2, lock.getQueuedThreads().size());
344	>	assertTrue(lock.getQueuedThreads().contains(t1));
345	>	assertTrue(lock.getQueuedThreads().contains(t2));
346	>	t1.interrupt();
347	>	awaitTermination(t1);
348	>	assertFalse(lock.getQueuedThreads().contains(t1));
349	>	assertTrue(lock.getQueuedThreads().contains(t2));
350	>	assertEquals(1, lock.getQueuedThreads().size());
351	>	lock.unlock();
352	>	awaitTermination(t2);
353	>	assertTrue(lock.getQueuedThreads().isEmpty());
354		}
355
356	+	/**
357	+	* timed tryLock is interruptible
358	+	*/
359	+	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
360	+	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
361	+	public void testTryLock_Interruptible(boolean fair) {
362	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
363	+	lock.lock();
364	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
365	+	public void realRun() throws InterruptedException {
366	+	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
367	+	}});
368	+
369	+	waitForQueuedThread(lock, t);
370	+	t.interrupt();
371	+	awaitTermination(t);
372	+	releaseLock(lock);
373	+	}
374
375		/**
376	<	* TryLock on a locked lock fails
377	<	*/
378	<	public void testTryLockWhenLocked() {
379	<	final ReentrantLock lock = new ReentrantLock();
380	<	lock.lock();
381	<	Thread t = new Thread(new Runnable() {
382	<	public void run() {
383	<	threadAssertFalse(lock.tryLock());
384	<	}
385	<	});
386	<	try {
387	<	t.start();
388	<	t.join();
389	<	lock.unlock();
390	<	} catch(Exception e){
279	<	unexpectedException();
280	<	}
281	<	}
376	>	* tryLock on a locked lock fails
377	>	*/
378	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
379	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
380	>	public void testTryLockWhenLocked(boolean fair) {
381	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
382	>	lock.lock();
383	>	Thread t = newStartedThread(new CheckedRunnable() {
384	>	public void realRun() {
385	>	assertFalse(lock.tryLock());
386	>	}});
387	>
388	>	awaitTermination(t);
389	>	releaseLock(lock);
390	>	}
391
392		/**
393		* Timed tryLock on a locked lock times out
394		*/
395	<	public void testTryLock_Timeout() {
396	<	final ReentrantLock lock = new ReentrantLock();
397	<	lock.lock();
398	<	Thread t = new Thread(new Runnable() {
399	<	public void run() {
400	<	try {
401	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
402	<	} catch (Exception ex) {
403	<	threadUnexpectedException();
404	<	}
405	<	}
406	<	});
407	<	try {
408	<	t.start();
409	<	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	<	}
395	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
396	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
397	>	public void testTryLock_Timeout(boolean fair) {
398	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
399	>	lock.lock();
400	>	Thread t = newStartedThread(new CheckedRunnable() {
401	>	public void realRun() throws InterruptedException {
402	>	long startTime = System.nanoTime();
403	>	long timeoutMillis = 10;
404	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
405	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
406	>	}});
407	>
408	>	awaitTermination(t);
409	>	releaseLock(lock);
410		}
411	<
322	<
411	>
412		/**
413	<	* isLocked is true when locked and false when not
413	>	* getHoldCount returns number of recursive holds
414		*/
415	<	public void testIsLocked() {
416	<	final ReentrantLock lock = new ReentrantLock();
417	<	lock.lock();
418	<	assertTrue(lock.isLocked());
419	<	lock.unlock();
420	<	assertFalse(lock.isLocked());
421	<	Thread t = new Thread(new Runnable() {
422	<	public void run() {
423	<	lock.lock();
424	<	try {
425	<	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();
415	>	public void testGetHoldCount()      { testGetHoldCount(false); }
416	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
417	>	public void testGetHoldCount(boolean fair) {
418	>	ReentrantLock lock = new ReentrantLock(fair);
419	>	for (int i = 1; i <= SIZE; i++) {
420	>	lock.lock();
421	>	assertEquals(i, lock.getHoldCount());
422	>	}
423	>	for (int i = SIZE; i > 0; i--) {
424	>	lock.unlock();
425	>	assertEquals(i-1, lock.getHoldCount());
426		}
427		}
428
355	–
429		/**
430	<	* lockInterruptibly is interruptible.
430	>	* isLocked is true when locked and false when not
431		*/
432	<	public void testLockInterruptibly1() {
433	<	final ReentrantLock lock = new ReentrantLock();
434	<	lock.lock();
362	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
432	>	public void testIsLocked()      { testIsLocked(false); }
433	>	public void testIsLocked_fair() { testIsLocked(true); }
434	>	public void testIsLocked(boolean fair) {
435		try {
436	<	t.start();
437	<	t.interrupt();
436	>	final ReentrantLock lock = new ReentrantLock(fair);
437	>	assertFalse(lock.isLocked());
438	>	lock.lock();
439	>	assertTrue(lock.isLocked());
440	>	lock.lock();
441	>	assertTrue(lock.isLocked());
442		lock.unlock();
443	<	t.join();
444	<	} catch(Exception e){
445	<	unexpectedException();
443	>	assertTrue(lock.isLocked());
444	>	lock.unlock();
445	>	assertFalse(lock.isLocked());
446	>	final CyclicBarrier barrier = new CyclicBarrier(2);
447	>	Thread t = newStartedThread(new CheckedRunnable() {
448	>	public void realRun() throws Exception {
449	>	lock.lock();
450	>	assertTrue(lock.isLocked());
451	>	barrier.await();
452	>	barrier.await();
453	>	lock.unlock();
454	>	}});
455	>
456	>	barrier.await();
457	>	assertTrue(lock.isLocked());
458	>	barrier.await();
459	>	awaitTermination(t);
460	>	assertFalse(lock.isLocked());
461	>	} catch (Exception e) {
462	>	threadUnexpectedException(e);
463		}
464	<	}
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());
388	<	assertTrue(lock.isHeldByCurrentThread());
389	<	t.join();
390	<	} catch(Exception e){
391	<	unexpectedException();
474	>	lock.lockInterruptibly();
475	>	} catch (InterruptedException ie) {
476	>	threadUnexpectedException(ie);
477		}
478	+	assertLockedByMoi(lock);
479	+	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
480	+	waitForQueuedThread(lock, t);
481	+	t.interrupt();
482	+	assertTrue(lock.isLocked());
483	+	assertTrue(lock.isHeldByCurrentThread());
484	+	awaitTermination(t);
485	+	releaseLock(lock);
486		}
487
488		/**
489		* Calling await without holding lock throws IllegalMonitorStateException
490		*/
491	<	public void testAwait_IllegalMonitor() {
492	<	final ReentrantLock lock = new ReentrantLock();
491	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
492	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
493	>	public void testAwait_IMSE(boolean fair) {
494	>	final ReentrantLock lock = new ReentrantLock(fair);
495		final Condition c = lock.newCondition();
496	<	try {
497	<	c.await();
498	<	shouldThrow();
499	<	}
500	<	catch (IllegalMonitorStateException success) {
501	<	}
502	<	catch (Exception ex) {
503	<	unexpectedException();
496	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
497	>	long startTime = System.nanoTime();
498	>	try {
499	>	await(c, awaitMethod);
500	>	shouldThrow();
501	>	} catch (IllegalMonitorStateException success) {
502	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
503	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
504		}
505		}
506
507		/**
508		* Calling signal without holding lock throws IllegalMonitorStateException
509		*/
510	<	public void testSignal_IllegalMonitor() {
511	<	final ReentrantLock lock = new ReentrantLock();
510	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
511	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
512	>	public void testSignal_IMSE(boolean fair) {
513	>	final ReentrantLock lock = new ReentrantLock(fair);
514		final Condition c = lock.newCondition();
515		try {
516		c.signal();
517		shouldThrow();
518	<	}
422	<	catch (IllegalMonitorStateException success) {
423	<	}
424	<	catch (Exception ex) {
425	<	unexpectedException();
426	<	}
518	>	} catch (IllegalMonitorStateException success) {}
519		}
520
521		/**
522		* awaitNanos without a signal times out
523		*/
524	<	public void testAwaitNanos_Timeout() {
525	<	final ReentrantLock lock = new ReentrantLock();
526	<	final Condition c = lock.newCondition();
524	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
525	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
526	>	public void testAwaitNanos_Timeout(boolean fair) {
527		try {
528	+	final ReentrantLock lock = new ReentrantLock(fair);
529	+	final Condition c = lock.newCondition();
530		lock.lock();
531	<	long t = c.awaitNanos(100);
532	<	assertTrue(t <= 0);
531	>	long startTime = System.nanoTime();
532	>	long timeoutMillis = 10;
533	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
534	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
535	>	assertTrue(nanosRemaining <= 0);
536	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
537		lock.unlock();
538	<	}
539	<	catch (Exception ex) {
442	<	unexpectedException();
538	>	} catch (InterruptedException e) {
539	>	threadUnexpectedException(e);
540		}
541		}
542
543		/**
544	<	*  timed await without a signal times out
544	>	* timed await without a signal times out
545		*/
546	<	public void testAwait_Timeout() {
547	<	final ReentrantLock lock = new ReentrantLock();
548	<	final Condition c = lock.newCondition();
546	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
547	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
548	>	public void testAwait_Timeout(boolean fair) {
549		try {
550	+	final ReentrantLock lock = new ReentrantLock(fair);
551	+	final Condition c = lock.newCondition();
552		lock.lock();
553	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
553	>	long startTime = System.nanoTime();
554	>	long timeoutMillis = 10;
555	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
556	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
557		lock.unlock();
558	<	}
559	<	catch (Exception ex) {
458	<	unexpectedException();
558	>	} catch (InterruptedException e) {
559	>	threadUnexpectedException(e);
560		}
561		}
562
563		/**
564		* awaitUntil without a signal times out
565		*/
566	<	public void testAwaitUntil_Timeout() {
567	<	final ReentrantLock lock = new ReentrantLock();
568	<	final Condition c = lock.newCondition();
566	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
567	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
568	>	public void testAwaitUntil_Timeout(boolean fair) {
569		try {
570	+	final ReentrantLock lock = new ReentrantLock(fair);
571	+	final Condition c = lock.newCondition();
572		lock.lock();
573	+	long startTime = System.nanoTime();
574	+	long timeoutMillis = 10;
575		java.util.Date d = new java.util.Date();
576	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
576	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
577	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
578		lock.unlock();
579	<	}
580	<	catch (Exception ex) {
475	<	unexpectedException();
579	>	} catch (InterruptedException e) {
580	>	threadUnexpectedException(e);
581		}
582		}
583
584		/**
585		* await returns when signalled
586		*/
587	<	public void testAwait() {
588	<	final ReentrantLock lock = new ReentrantLock();
587	>	public void testAwait()      { testAwait(false); }
588	>	public void testAwait_fair() { testAwait(true); }
589	>	public void testAwait(boolean fair) {
590	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
591		final Condition c = lock.newCondition();
592	<	Thread t = new Thread(new Runnable() {
593	<	public void run() {
594	<	try {
595	<	lock.lock();
596	<	c.await();
597	<	lock.unlock();
598	<	}
599	<	catch(InterruptedException e) {
600	<	threadUnexpectedException();
601	<	}
602	<	}
603	<	});
604	<
605	<	try {
606	<	t.start();
607	<	Thread.sleep(SHORT_DELAY_MS);
608	<	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	<	}
592	>	final CountDownLatch locked = new CountDownLatch(1);
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594	>	public void realRun() throws InterruptedException {
595	>	lock.lock();
596	>	locked.countDown();
597	>	c.await();
598	>	lock.unlock();
599	>	}});
600	>
601	>	await(locked);
602	>	lock.lock();
603	>	assertHasWaiters(lock, c, t);
604	>	c.signal();
605	>	assertHasNoWaiters(lock, c);
606	>	assertTrue(t.isAlive());
607	>	lock.unlock();
608	>	awaitTermination(t);
609		}
610
611		/**
612		* hasWaiters throws NPE if null
613		*/
614	<	public void testHasWaitersNPE() {
615	<	final ReentrantLock lock = new ReentrantLock();
614	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
615	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
616	>	public void testHasWaitersNPE(boolean fair) {
617	>	final ReentrantLock lock = new ReentrantLock(fair);
618		try {
619		lock.hasWaiters(null);
620		shouldThrow();
621	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
621	>	} catch (NullPointerException success) {}
622		}
623
624		/**
625		* getWaitQueueLength throws NPE if null
626		*/
627	<	public void testGetWaitQueueLengthNPE() {
628	<	final ReentrantLock lock = new ReentrantLock();
627	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
628	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
629	>	public void testGetWaitQueueLengthNPE(boolean fair) {
630	>	final ReentrantLock lock = new ReentrantLock(fair);
631		try {
632		lock.getWaitQueueLength(null);
633		shouldThrow();
634	<	} catch (NullPointerException success) {
535	<	} catch (Exception ex) {
536	<	unexpectedException();
537	<	}
634	>	} catch (NullPointerException success) {}
635		}
636
540	–
637		/**
638		* getWaitingThreads throws NPE if null
639		*/
640	<	public void testGetWaitingThreadsNPE() {
641	<	final PublicReentrantLock lock = new PublicReentrantLock();
640	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
641	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
642	>	public void testGetWaitingThreadsNPE(boolean fair) {
643	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
644		try {
645		lock.getWaitingThreads(null);
646		shouldThrow();
647	<	} catch (NullPointerException success) {
550	<	} catch (Exception ex) {
551	<	unexpectedException();
552	<	}
647	>	} catch (NullPointerException success) {}
648		}
649
555	–
650		/**
651	<	* hasWaiters throws IAE if not owned
651	>	* hasWaiters throws IllegalArgumentException if not owned
652		*/
653	<	public void testHasWaitersIAE() {
654	<	final ReentrantLock lock = new ReentrantLock();
655	<	final Condition c = (lock.newCondition());
656	<	final ReentrantLock lock2 = new ReentrantLock();
653	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
654	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
655	>	public void testHasWaitersIAE(boolean fair) {
656	>	final ReentrantLock lock = new ReentrantLock(fair);
657	>	final Condition c = lock.newCondition();
658	>	final ReentrantLock lock2 = new ReentrantLock(fair);
659		try {
660		lock2.hasWaiters(c);
661		shouldThrow();
662	<	} catch (IllegalArgumentException success) {
567	<	} catch (Exception ex) {
568	<	unexpectedException();
569	<	}
662	>	} catch (IllegalArgumentException success) {}
663		}
664
665		/**
666	<	* hasWaiters throws IMSE if not locked
666	>	* hasWaiters throws IllegalMonitorStateException if not locked
667		*/
668	<	public void testHasWaitersIMSE() {
669	<	final ReentrantLock lock = new ReentrantLock();
670	<	final Condition c = (lock.newCondition());
668	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
669	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
670	>	public void testHasWaitersIMSE(boolean fair) {
671	>	final ReentrantLock lock = new ReentrantLock(fair);
672	>	final Condition c = lock.newCondition();
673		try {
674		lock.hasWaiters(c);
675		shouldThrow();
676	<	} catch (IllegalMonitorStateException success) {
582	<	} catch (Exception ex) {
583	<	unexpectedException();
584	<	}
676	>	} catch (IllegalMonitorStateException success) {}
677		}
678
587	–
679		/**
680	<	* getWaitQueueLength throws IAE if not owned
680	>	* getWaitQueueLength throws IllegalArgumentException if not owned
681		*/
682	<	public void testGetWaitQueueLengthIAE() {
683	<	final ReentrantLock lock = new ReentrantLock();
684	<	final Condition c = (lock.newCondition());
685	<	final ReentrantLock lock2 = new ReentrantLock();
682	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
683	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
684	>	public void testGetWaitQueueLengthIAE(boolean fair) {
685	>	final ReentrantLock lock = new ReentrantLock(fair);
686	>	final Condition c = lock.newCondition();
687	>	final ReentrantLock lock2 = new ReentrantLock(fair);
688		try {
689		lock2.getWaitQueueLength(c);
690		shouldThrow();
691	<	} catch (IllegalArgumentException success) {
599	<	} catch (Exception ex) {
600	<	unexpectedException();
601	<	}
691	>	} catch (IllegalArgumentException success) {}
692		}
693
694		/**
695	<	* getWaitQueueLength throws IMSE if not locked
695	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
696		*/
697	<	public void testGetWaitQueueLengthIMSE() {
698	<	final ReentrantLock lock = new ReentrantLock();
699	<	final Condition c = (lock.newCondition());
697	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
698	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
699	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
700	>	final ReentrantLock lock = new ReentrantLock(fair);
701	>	final Condition c = lock.newCondition();
702		try {
703		lock.getWaitQueueLength(c);
704		shouldThrow();
705	<	} catch (IllegalMonitorStateException success) {
614	<	} catch (Exception ex) {
615	<	unexpectedException();
616	<	}
705	>	} catch (IllegalMonitorStateException success) {}
706		}
707
619	–
708		/**
709	<	* getWaitingThreads throws IAE if not owned
709	>	* getWaitingThreads throws IllegalArgumentException if not owned
710		*/
711	<	public void testGetWaitingThreadsIAE() {
712	<	final PublicReentrantLock lock = new PublicReentrantLock();
713	<	final Condition c = (lock.newCondition());
714	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
711	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
712	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
713	>	public void testGetWaitingThreadsIAE(boolean fair) {
714	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
715	>	final Condition c = lock.newCondition();
716	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
717		try {
718		lock2.getWaitingThreads(c);
719		shouldThrow();
720	<	} catch (IllegalArgumentException success) {
631	<	} catch (Exception ex) {
632	<	unexpectedException();
633	<	}
720	>	} catch (IllegalArgumentException success) {}
721		}
722
723		/**
724	<	* getWaitingThreads throws IMSE if not locked
724	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
725		*/
726	<	public void testGetWaitingThreadsIMSE() {
727	<	final PublicReentrantLock lock = new PublicReentrantLock();
728	<	final Condition c = (lock.newCondition());
726	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
727	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
728	>	public void testGetWaitingThreadsIMSE(boolean fair) {
729	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
730	>	final Condition c = lock.newCondition();
731		try {
732		lock.getWaitingThreads(c);
733		shouldThrow();
734	<	} catch (IllegalMonitorStateException success) {
646	<	} catch (Exception ex) {
647	<	unexpectedException();
648	<	}
734	>	} catch (IllegalMonitorStateException success) {}
735		}
736
651	–
652	–
737		/**
738		* hasWaiters returns true when a thread is waiting, else false
739		*/
740	<	public void testHasWaiters() {
741	<	final ReentrantLock lock = new ReentrantLock();
740	>	public void testHasWaiters()      { testHasWaiters(false); }
741	>	public void testHasWaiters_fair() { testHasWaiters(true); }
742	>	public void testHasWaiters(boolean fair) {
743	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
744		final Condition c = lock.newCondition();
745	<	Thread t = new Thread(new Runnable() {
746	<	public void run() {
747	<	try {
748	<	lock.lock();
749	<	threadAssertFalse(lock.hasWaiters(c));
750	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
751	<	c.await();
752	<	lock.unlock();
753	<	}
754	<	catch(InterruptedException e) {
755	<	threadUnexpectedException();
756	<	}
757	<	}
758	<	});
759	<
760	<	try {
761	<	t.start();
762	<	Thread.sleep(SHORT_DELAY_MS);
763	<	lock.lock();
764	<	assertTrue(lock.hasWaiters(c));
765	<	assertEquals(1, lock.getWaitQueueLength(c));
766	<	c.signal();
767	<	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	<	}
745	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
746	>	Thread t = newStartedThread(new CheckedRunnable() {
747	>	public void realRun() throws InterruptedException {
748	>	lock.lock();
749	>	assertHasNoWaiters(lock, c);
750	>	assertFalse(lock.hasWaiters(c));
751	>	pleaseSignal.countDown();
752	>	c.await();
753	>	assertHasNoWaiters(lock, c);
754	>	assertFalse(lock.hasWaiters(c));
755	>	lock.unlock();
756	>	}});
757	>
758	>	await(pleaseSignal);
759	>	lock.lock();
760	>	assertHasWaiters(lock, c, t);
761	>	assertTrue(lock.hasWaiters(c));
762	>	c.signal();
763	>	assertHasNoWaiters(lock, c);
764	>	assertFalse(lock.hasWaiters(c));
765	>	lock.unlock();
766	>	awaitTermination(t);
767	>	assertHasNoWaiters(lock, c);
768		}
769
770		/**
771		* getWaitQueueLength returns number of waiting threads
772		*/
773	<	public void testGetWaitQueueLength() {
774	<	final ReentrantLock lock = new ReentrantLock();
773	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
774	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
775	>	public void testGetWaitQueueLength(boolean fair) {
776	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
777		final Condition c = lock.newCondition();
778	<	Thread t1 = new Thread(new Runnable() {
779	<	public void run() {
780	<	try {
781	<	lock.lock();
782	<	threadAssertFalse(lock.hasWaiters(c));
783	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
784	<	c.await();
785	<	lock.unlock();
786	<	}
787	<	catch(InterruptedException e) {
788	<	threadUnexpectedException();
789	<	}
790	<	}
791	<	});
792	<
793	<	Thread t2 = new Thread(new Runnable() {
794	<	public void run() {
795	<	try {
796	<	lock.lock();
797	<	threadAssertTrue(lock.hasWaiters(c));
798	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
799	<	c.await();
800	<	lock.unlock();
801	<	}
802	<	catch(InterruptedException e) {
803	<	threadUnexpectedException();
804	<	}
805	<	}
806	<	});
778	>	final CountDownLatch locked1 = new CountDownLatch(1);
779	>	final CountDownLatch locked2 = new CountDownLatch(1);
780	>	Thread t1 = new Thread(new CheckedRunnable() {
781	>	public void realRun() throws InterruptedException {
782	>	lock.lock();
783	>	assertFalse(lock.hasWaiters(c));
784	>	assertEquals(0, lock.getWaitQueueLength(c));
785	>	locked1.countDown();
786	>	c.await();
787	>	lock.unlock();
788	>	}});
789	>
790	>	Thread t2 = new Thread(new CheckedRunnable() {
791	>	public void realRun() throws InterruptedException {
792	>	lock.lock();
793	>	assertTrue(lock.hasWaiters(c));
794	>	assertEquals(1, lock.getWaitQueueLength(c));
795	>	locked2.countDown();
796	>	c.await();
797	>	lock.unlock();
798	>	}});
799	>
800	>	lock.lock();
801	>	assertEquals(0, lock.getWaitQueueLength(c));
802	>	lock.unlock();
803	>
804	>	t1.start();
805	>	await(locked1);
806	>
807	>	lock.lock();
808	>	assertHasWaiters(lock, c, t1);
809	>	assertEquals(1, lock.getWaitQueueLength(c));
810	>	lock.unlock();
811	>
812	>	t2.start();
813	>	await(locked2);
814	>
815	>	lock.lock();
816	>	assertHasWaiters(lock, c, t1, t2);
817	>	assertEquals(2, lock.getWaitQueueLength(c));
818	>	c.signalAll();
819	>	assertHasNoWaiters(lock, c);
820	>	lock.unlock();
821
822	<	try {
823	<	t1.start();
824	<	Thread.sleep(SHORT_DELAY_MS);
825	<	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	<	}
822	>	awaitTermination(t1);
823	>	awaitTermination(t2);
824	>
825	>	assertHasNoWaiters(lock, c);
826		}
827
828		/**
829		* getWaitingThreads returns only and all waiting threads
830		*/
831	<	public void testGetWaitingThreads() {
832	<	final PublicReentrantLock lock = new PublicReentrantLock();
831	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
832	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
833	>	public void testGetWaitingThreads(boolean fair) {
834	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
835		final Condition c = lock.newCondition();
836	<	Thread t1 = new Thread(new Runnable() {
837	<	public void run() {
838	<	try {
839	<	lock.lock();
840	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
841	<	c.await();
842	<	lock.unlock();
843	<	}
844	<	catch(InterruptedException e) {
845	<	threadUnexpectedException();
846	<	}
847	<	}
848	<	});
849	<
850	<	Thread t2 = new Thread(new Runnable() {
851	<	public void run() {
852	<	try {
853	<	lock.lock();
854	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
855	<	c.await();
856	<	lock.unlock();
857	<	}
858	<	catch(InterruptedException e) {
859	<	threadUnexpectedException();
860	<	}
861	<	}
862	<	});
863	<
864	<	try {
865	<	lock.lock();
866	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
867	<	lock.unlock();
868	<	t1.start();
869	<	Thread.sleep(SHORT_DELAY_MS);
870	<	t2.start();
871	<	Thread.sleep(SHORT_DELAY_MS);
872	<	lock.lock();
873	<	assertTrue(lock.hasWaiters(c));
874	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
875	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
876	<	c.signalAll();
877	<	lock.unlock();
878	<	Thread.sleep(SHORT_DELAY_MS);
879	<	lock.lock();
880	<	assertFalse(lock.hasWaiters(c));
881	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
882	<	lock.unlock();
883	<	t1.join(SHORT_DELAY_MS);
884	<	t2.join(SHORT_DELAY_MS);
885	<	assertFalse(t1.isAlive());
812	<	assertFalse(t2.isAlive());
813	<	}
814	<	catch (Exception ex) {
815	<	unexpectedException();
816	<	}
836	>	final CountDownLatch locked1 = new CountDownLatch(1);
837	>	final CountDownLatch locked2 = new CountDownLatch(1);
838	>	Thread t1 = new Thread(new CheckedRunnable() {
839	>	public void realRun() throws InterruptedException {
840	>	lock.lock();
841	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
842	>	locked1.countDown();
843	>	c.await();
844	>	lock.unlock();
845	>	}});
846	>
847	>	Thread t2 = new Thread(new CheckedRunnable() {
848	>	public void realRun() throws InterruptedException {
849	>	lock.lock();
850	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
851	>	locked2.countDown();
852	>	c.await();
853	>	lock.unlock();
854	>	}});
855	>
856	>	lock.lock();
857	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
858	>	lock.unlock();
859	>
860	>	t1.start();
861	>	await(locked1);
862	>
863	>	lock.lock();
864	>	assertHasWaiters(lock, c, t1);
865	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
866	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
867	>	assertEquals(1, lock.getWaitingThreads(c).size());
868	>	lock.unlock();
869	>
870	>	t2.start();
871	>	await(locked2);
872	>
873	>	lock.lock();
874	>	assertHasWaiters(lock, c, t1, t2);
875	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
876	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
877	>	assertEquals(2, lock.getWaitingThreads(c).size());
878	>	c.signalAll();
879	>	assertHasNoWaiters(lock, c);
880	>	lock.unlock();
881	>
882	>	awaitTermination(t1);
883	>	awaitTermination(t2);
884	>
885	>	assertHasNoWaiters(lock, c);
886		}
887
819	–
820	–
888		/**
889	<	* awaitUninterruptibly doesn't abort on interrupt
890	<	*/
891	<	public void testAwaitUninterruptibly() {
892	<	final ReentrantLock lock = new ReentrantLock();
889	>	* awaitUninterruptibly is uninterruptible
890	>	*/
891	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
892	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
893	>	public void testAwaitUninterruptibly(boolean fair) {
894	>	final ReentrantLock lock = new ReentrantLock(fair);
895		final Condition c = lock.newCondition();
896	<	Thread t = new Thread(new Runnable() {
828	<	public void run() {
829	<	lock.lock();
830	<	c.awaitUninterruptibly();
831	<	lock.unlock();
832	<	}
833	<	});
896	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
897
898	<	try {
899	<	t.start();
900	<	Thread.sleep(SHORT_DELAY_MS);
901	<	t.interrupt();
902	<	lock.lock();
903	<	c.signal();
904	<	lock.unlock();
905	<	assert(t.isInterrupted());
906	<	t.join(SHORT_DELAY_MS);
907	<	assertFalse(t.isAlive());
908	<	}
909	<	catch (Exception ex) {
910	<	unexpectedException();
911	<	}
898	>	Thread t1 = newStartedThread(new CheckedRunnable() {
899	>	public void realRun() {
900	>	// Interrupt before awaitUninterruptibly
901	>	lock.lock();
902	>	pleaseInterrupt.countDown();
903	>	Thread.currentThread().interrupt();
904	>	c.awaitUninterruptibly();
905	>	assertTrue(Thread.interrupted());
906	>	lock.unlock();
907	>	}});
908	>
909	>	Thread t2 = newStartedThread(new CheckedRunnable() {
910	>	public void realRun() {
911	>	// Interrupt during awaitUninterruptibly
912	>	lock.lock();
913	>	pleaseInterrupt.countDown();
914	>	c.awaitUninterruptibly();
915	>	assertTrue(Thread.interrupted());
916	>	lock.unlock();
917	>	}});
918	>
919	>	await(pleaseInterrupt);
920	>	lock.lock();
921	>	lock.unlock();
922	>	t2.interrupt();
923	>
924	>	assertThreadStaysAlive(t1);
925	>	assertTrue(t2.isAlive());
926	>
927	>	lock.lock();
928	>	c.signalAll();
929	>	lock.unlock();
930	>
931	>	awaitTermination(t1);
932	>	awaitTermination(t2);
933		}
934
935		/**
936	<	* await is interruptible
937	<	*/
938	<	public void testAwait_Interrupt() {
939	<	final ReentrantLock lock = new ReentrantLock();
936	>	* await/awaitNanos/awaitUntil is interruptible
937	>	*/
938	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
939	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
940	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
941	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
942	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
943	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
944	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
945	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
946	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
947	>	final PublicReentrantLock lock =
948	>	new PublicReentrantLock(fair);
949		final Condition c = lock.newCondition();
950	<	Thread t = new Thread(new Runnable() {
951	<	public void run() {
952	<	try {
953	<	lock.lock();
954	<	c.await();
955	<	lock.unlock();
956	<	threadShouldThrow();
957	<	}
958	<	catch(InterruptedException success) {
959	<	}
960	<	}
961	<	});
962	<
963	<	try {
964	<	t.start();
965	<	Thread.sleep(SHORT_DELAY_MS);
966	<	t.interrupt();
967	<	t.join(SHORT_DELAY_MS);
968	<	assertFalse(t.isAlive());
969	<	}
970	<	catch (Exception ex) {
971	<	unexpectedException();
879	<	}
950	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
952	>	public void realRun() throws InterruptedException {
953	>	lock.lock();
954	>	assertLockedByMoi(lock);
955	>	assertHasNoWaiters(lock, c);
956	>	pleaseInterrupt.countDown();
957	>	try {
958	>	await(c, awaitMethod);
959	>	} finally {
960	>	assertLockedByMoi(lock);
961	>	assertHasNoWaiters(lock, c);
962	>	lock.unlock();
963	>	assertFalse(Thread.interrupted());
964	>	}
965	>	}});
966	>
967	>	await(pleaseInterrupt);
968	>	assertHasWaiters(lock, c, t);
969	>	t.interrupt();
970	>	awaitTermination(t);
971	>	assertNotLocked(lock);
972		}
973
974		/**
975	<	* awaitNanos is interruptible
975	>	* signalAll wakes up all threads
976		*/
977	<	public void testAwaitNanos_Interrupt() {
978	<	final ReentrantLock lock = new ReentrantLock();
977	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
978	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
979	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
980	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
981	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
982	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
983	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
984	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
985	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
986	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
987		final Condition c = lock.newCondition();
988	<	Thread t = new Thread(new Runnable() {
989	<	public void run() {
990	<	try {
991	<	lock.lock();
992	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
993	<	lock.unlock();
994	<	threadShouldThrow();
995	<	}
996	<	catch(InterruptedException success) {
997	<	}
998	<	}
999	<	});
1000	<
1001	<	try {
1002	<	t.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
1004	<	t.interrupt();
1005	<	t.join(SHORT_DELAY_MS);
1006	<	assertFalse(t.isAlive());
1007	<	}
1008	<	catch (Exception ex) {
909	<	unexpectedException();
910	<	}
988	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
989	>	class Awaiter extends CheckedRunnable {
990	>	public void realRun() throws InterruptedException {
991	>	lock.lock();
992	>	pleaseSignal.countDown();
993	>	await(c, awaitMethod);
994	>	lock.unlock();
995	>	}
996	>	}
997	>
998	>	Thread t1 = newStartedThread(new Awaiter());
999	>	Thread t2 = newStartedThread(new Awaiter());
1000	>
1001	>	await(pleaseSignal);
1002	>	lock.lock();
1003	>	assertHasWaiters(lock, c, t1, t2);
1004	>	c.signalAll();
1005	>	assertHasNoWaiters(lock, c);
1006	>	lock.unlock();
1007	>	awaitTermination(t1);
1008	>	awaitTermination(t2);
1009		}
1010
1011		/**
1012	<	* awaitUntil is interruptible
1013	<	*/
1014	<	public void testAwaitUntil_Interrupt() {
1015	<	final ReentrantLock lock = new ReentrantLock();
1012	>	* signal wakes up waiting threads in FIFO order
1013	>	*/
1014	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1015	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1016	>	public void testSignalWakesFifo(boolean fair) {
1017	>	final PublicReentrantLock lock =
1018	>	new PublicReentrantLock(fair);
1019		final Condition c = lock.newCondition();
1020	<	Thread t = new Thread(new Runnable() {
1021	<	public void run() {
1022	<	try {
1023	<	lock.lock();
1024	<	java.util.Date d = new java.util.Date();
1025	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1026	<	lock.unlock();
1027	<	threadShouldThrow();
1028	<	}
1029	<	catch(InterruptedException success) {
1030	<	}
1031	<	}
1032	<	});
1033	<
1034	<	try {
1035	<	t.start();
1036	<	Thread.sleep(SHORT_DELAY_MS);
1037	<	t.interrupt();
1038	<	t.join(SHORT_DELAY_MS);
1039	<	assertFalse(t.isAlive());
1040	<	}
1041	<	catch (Exception ex) {
1042	<	unexpectedException();
1043	<	}
1020	>	final CountDownLatch locked1 = new CountDownLatch(1);
1021	>	final CountDownLatch locked2 = new CountDownLatch(1);
1022	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1023	>	public void realRun() throws InterruptedException {
1024	>	lock.lock();
1025	>	locked1.countDown();
1026	>	c.await();
1027	>	lock.unlock();
1028	>	}});
1029	>
1030	>	await(locked1);
1031	>
1032	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1033	>	public void realRun() throws InterruptedException {
1034	>	lock.lock();
1035	>	locked2.countDown();
1036	>	c.await();
1037	>	lock.unlock();
1038	>	}});
1039	>
1040	>	await(locked2);
1041	>
1042	>	lock.lock();
1043	>	assertHasWaiters(lock, c, t1, t2);
1044	>	assertFalse(lock.hasQueuedThreads());
1045	>	c.signal();
1046	>	assertHasWaiters(lock, c, t2);
1047	>	assertTrue(lock.hasQueuedThread(t1));
1048	>	assertFalse(lock.hasQueuedThread(t2));
1049	>	c.signal();
1050	>	assertHasNoWaiters(lock, c);
1051	>	assertTrue(lock.hasQueuedThread(t1));
1052	>	assertTrue(lock.hasQueuedThread(t2));
1053	>	lock.unlock();
1054	>	awaitTermination(t1);
1055	>	awaitTermination(t2);
1056		}
1057
1058		/**
1059	<	* signalAll wakes up all threads
1060	<	*/
1061	<	public void testSignalAll() {
1062	<	final ReentrantLock lock = new ReentrantLock();
1059	>	* await after multiple reentrant locking preserves lock count
1060	>	*/
1061	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1062	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1063	>	public void testAwaitLockCount(boolean fair) {
1064	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1065		final Condition c = lock.newCondition();
1066	<	Thread t1 = new Thread(new Runnable() {
1067	<	public void run() {
1068	<	try {
1069	<	lock.lock();
1070	<	c.await();
1071	<	lock.unlock();
1072	<	}
1073	<	catch(InterruptedException e) {
1074	<	threadUnexpectedException();
1075	<	}
1076	<	}
1077	<	});
1078	<
1079	<	Thread t2 = new Thread(new Runnable() {
1080	<	public void run() {
1081	<	try {
1082	<	lock.lock();
1083	<	c.await();
1084	<	lock.unlock();
1085	<	}
1086	<	catch(InterruptedException e) {
1087	<	threadUnexpectedException();
1088	<	}
1089	<	}
1090	<	});
1091	<
1092	<	try {
1093	<	t1.start();
1094	<	t2.start();
1095	<	Thread.sleep(SHORT_DELAY_MS);
1096	<	lock.lock();
1097	<	c.signalAll();
1098	<	lock.unlock();
1099	<	t1.join(SHORT_DELAY_MS);
1100	<	t2.join(SHORT_DELAY_MS);
1101	<	assertFalse(t1.isAlive());
987	<	assertFalse(t2.isAlive());
988	<	}
989	<	catch (Exception ex) {
990	<	unexpectedException();
991	<	}
1066	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1067	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1068	>	public void realRun() throws InterruptedException {
1069	>	lock.lock();
1070	>	assertLockedByMoi(lock);
1071	>	assertEquals(1, lock.getHoldCount());
1072	>	pleaseSignal.countDown();
1073	>	c.await();
1074	>	assertLockedByMoi(lock);
1075	>	assertEquals(1, lock.getHoldCount());
1076	>	lock.unlock();
1077	>	}});
1078	>
1079	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1080	>	public void realRun() throws InterruptedException {
1081	>	lock.lock();
1082	>	lock.lock();
1083	>	assertLockedByMoi(lock);
1084	>	assertEquals(2, lock.getHoldCount());
1085	>	pleaseSignal.countDown();
1086	>	c.await();
1087	>	assertLockedByMoi(lock);
1088	>	assertEquals(2, lock.getHoldCount());
1089	>	lock.unlock();
1090	>	lock.unlock();
1091	>	}});
1092	>
1093	>	await(pleaseSignal);
1094	>	lock.lock();
1095	>	assertHasWaiters(lock, c, t1, t2);
1096	>	assertEquals(1, lock.getHoldCount());
1097	>	c.signalAll();
1098	>	assertHasNoWaiters(lock, c);
1099	>	lock.unlock();
1100	>	awaitTermination(t1);
1101	>	awaitTermination(t2);
1102		}
1103
1104		/**
1105		* A serialized lock deserializes as unlocked
1106		*/
1107	<	public void testSerialization() {
1108	<	ReentrantLock l = new ReentrantLock();
1109	<	l.lock();
1110	<	l.unlock();
1111	<
1112	<	try {
1113	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1114	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1115	<	out.writeObject(l);
1116	<	out.close();
1117	<
1118	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1119	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1120	<	ReentrantLock r = (ReentrantLock) in.readObject();
1121	<	r.lock();
1122	<	r.unlock();
1123	<	} catch(Exception e){
1124	<	e.printStackTrace();
1125	<	unexpectedException();
1126	<	}
1107	>	public void testSerialization()      { testSerialization(false); }
1108	>	public void testSerialization_fair() { testSerialization(true); }
1109	>	public void testSerialization(boolean fair) {
1110	>	ReentrantLock lock = new ReentrantLock(fair);
1111	>	lock.lock();
1112	>
1113	>	ReentrantLock clone = serialClone(lock);
1114	>	assertEquals(lock.isFair(), clone.isFair());
1115	>	assertTrue(lock.isLocked());
1116	>	assertFalse(clone.isLocked());
1117	>	assertEquals(1, lock.getHoldCount());
1118	>	assertEquals(0, clone.getHoldCount());
1119	>	clone.lock();
1120	>	clone.lock();
1121	>	assertTrue(clone.isLocked());
1122	>	assertEquals(2, clone.getHoldCount());
1123	>	assertEquals(1, lock.getHoldCount());
1124	>	clone.unlock();
1125	>	clone.unlock();
1126	>	assertTrue(lock.isLocked());
1127	>	assertFalse(clone.isLocked());
1128		}
1129
1130	+	/**
1131	+	* toString indicates current lock state
1132	+	*/
1133	+	public void testToString()      { testToString(false); }
1134	+	public void testToString_fair() { testToString(true); }
1135	+	public void testToString(boolean fair) {
1136	+	ReentrantLock lock = new ReentrantLock(fair);
1137	+	assertTrue(lock.toString().contains("Unlocked"));
1138	+	lock.lock();
1139	+	assertTrue(lock.toString().contains("Locked"));
1140	+	lock.unlock();
1141	+	assertTrue(lock.toString().contains("Unlocked"));
1142	+	}
1143		}

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