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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.27 by jsr166, Mon Nov 16 04:57:10 2009 UTC vs.
Revision 1.56 by jsr166, Mon Feb 2 04:50:55 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
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	+	PublicReentrantLock(boolean fair) { super(fair); }
60	+	public Thread getOwner() {
61	+	return super.getOwner();
62	+	}
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());
142	<	t1.join();
143	<	t2.join();
144	<	} catch (Exception e){
145	<	unexpectedException();
146	<	}
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());
171	<	t1.join();
172	<	t2.join();
173	<	} catch (Exception e){
174	<	unexpectedException();
175	<	}
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	<	try {
269	<	assertEquals(0, lock.getQueueLength());
270	<	lock.lock();
271	<	t1.start();
272	<	Thread.sleep(SHORT_DELAY_MS);
273	<	assertEquals(1, lock.getQueueLength());
274	<	t2.start();
275	<	Thread.sleep(SHORT_DELAY_MS);
276	<	assertEquals(2, lock.getQueueLength());
277	<	t1.interrupt();
278	<	Thread.sleep(SHORT_DELAY_MS);
279	<	assertEquals(1, lock.getQueueLength());
280	<	lock.unlock();
281	<	Thread.sleep(SHORT_DELAY_MS);
199	<	assertEquals(0, lock.getQueueLength());
200	<	t1.join();
201	<	t2.join();
202	<	} catch (Exception e){
203	<	unexpectedException();
204	<	}
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() {
288	<	final ReentrantLock sync = new ReentrantLock();
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	<	sync.hasQueuedThread(null);
292	>	lock.hasQueuedThread(null);
293		shouldThrow();
294	<	} catch (NullPointerException success) {
216	<	}
294	>	} catch (NullPointerException success) {}
295		}
296
297		/**
298	<	* hasQueuedThread reports whether a thread is queued.
298	>	* hasQueuedThread reports whether a thread is queued
299		*/
300	<	public void testHasQueuedThread() {
301	<	final ReentrantLock sync = new ReentrantLock();
302	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
303	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
304	<	try {
305	<	assertFalse(sync.hasQueuedThread(t1));
306	<	assertFalse(sync.hasQueuedThread(t2));
307	<	sync.lock();
308	<	t1.start();
309	<	Thread.sleep(SHORT_DELAY_MS);
310	<	assertTrue(sync.hasQueuedThread(t1));
311	<	t2.start();
312	<	Thread.sleep(SHORT_DELAY_MS);
313	<	assertTrue(sync.hasQueuedThread(t1));
314	<	assertTrue(sync.hasQueuedThread(t2));
315	<	t1.interrupt();
316	<	Thread.sleep(SHORT_DELAY_MS);
317	<	assertFalse(sync.hasQueuedThread(t1));
318	<	assertTrue(sync.hasQueuedThread(t2));
319	<	sync.unlock();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	assertFalse(sync.hasQueuedThread(t1));
322	<	Thread.sleep(SHORT_DELAY_MS);
323	<	assertFalse(sync.hasQueuedThread(t2));
324	<	t1.join();
247	<	t2.join();
248	<	} catch (Exception e){
249	<	unexpectedException();
250	<	}
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	>	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
253	–
327		/**
328		* getQueuedThreads includes waiting threads
329		*/
330	<	public void testGetQueuedThreads() {
331	<	final PublicReentrantLock lock = new PublicReentrantLock();
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	<	try {
337	<	assertTrue(lock.getQueuedThreads().isEmpty());
338	<	lock.lock();
339	<	assertTrue(lock.getQueuedThreads().isEmpty());
340	<	t1.start();
341	<	Thread.sleep(SHORT_DELAY_MS);
342	<	assertTrue(lock.getQueuedThreads().contains(t1));
343	<	t2.start();
344	<	Thread.sleep(SHORT_DELAY_MS);
345	<	assertTrue(lock.getQueuedThreads().contains(t1));
346	<	assertTrue(lock.getQueuedThreads().contains(t2));
347	<	t1.interrupt();
348	<	Thread.sleep(SHORT_DELAY_MS);
349	<	assertFalse(lock.getQueuedThreads().contains(t1));
350	<	assertTrue(lock.getQueuedThreads().contains(t2));
351	<	lock.unlock();
352	<	Thread.sleep(SHORT_DELAY_MS);
353	<	assertTrue(lock.getQueuedThreads().isEmpty());
354	<	t1.join();
355	<	t2.join();
281	<	} catch (Exception e){
282	<	unexpectedException();
283	<	}
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
286	–
358		/**
359	<	* timed tryLock is interruptible.
360	<	*/
361	<	public void testInterruptedException2() {
362	<	final ReentrantLock lock = new ReentrantLock();
363	<	lock.lock();
364	<	Thread t = new Thread(new Runnable() {
365	<	public void run() {
366	<	try {
367	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
368	<	threadShouldThrow();
369	<	} catch (InterruptedException success){}
299	<	}
300	<	});
301	<	try {
302	<	t.start();
303	<	t.interrupt();
304	<	} catch (Exception e){
305	<	unexpectedException();
306	<	}
307	<	}
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
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();
325	<	} catch (Exception e){
326	<	unexpectedException();
327	<	}
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();
348	<	lock.unlock();
349	<	} catch (Exception e){
350	<	unexpectedException();
351	<	}
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
414		/**
415		* getHoldCount returns number of recursive holds
416		*/
417	<	public void testGetHoldCount() {
418	<	ReentrantLock lock = new ReentrantLock();
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	<	}
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
369	–
431		/**
432		* isLocked is true when locked and false when not
433		*/
434	<	public void testIsLocked() {
435	<	final ReentrantLock lock = new ReentrantLock();
436	<	lock.lock();
437	<	assertTrue(lock.isLocked());
438	<	lock.unlock();
439	<	assertFalse(lock.isLocked());
440	<	Thread t = new Thread(new Runnable() {
441	<	public void run() {
442	<	lock.lock();
443	<	try {
444	<	Thread.sleep(SMALL_DELAY_MS);
384	<	}
385	<	catch (Exception e) {
386	<	threadUnexpectedException();
387	<	}
388	<	lock.unlock();
389	<	}
390	<	});
391	<	try {
392	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
434	>	public void testIsLocked()      { testIsLocked(false); }
435	>	public void testIsLocked_fair() { testIsLocked(true); }
436	>	public void testIsLocked(boolean fair) {
437	>	try {
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		assertTrue(lock.isLocked());
446	<	t.join();
446	>	lock.unlock();
447		assertFalse(lock.isLocked());
448	<	} catch (Exception e){
449	<	unexpectedException();
450	<	}
451	<	}
452	<
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	<	/**
459	<	* lockInterruptibly is interruptible.
460	<	*/
461	<	public void testLockInterruptibly1() {
462	<	final ReentrantLock lock = new ReentrantLock();
463	<	lock.lock();
464	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
410	<	try {
411	<	t.start();
412	<	Thread.sleep(SHORT_DELAY_MS);
413	<	t.interrupt();
414	<	Thread.sleep(SHORT_DELAY_MS);
415	<	lock.unlock();
416	<	t.join();
417	<	} catch (Exception e){
418	<	unexpectedException();
458	>	barrier.await();
459	>	assertTrue(lock.isLocked());
460	>	barrier.await();
461	>	awaitTermination(t);
462	>	assertFalse(lock.isLocked());
463	>	} catch (Exception e) {
464	>	threadUnexpectedException(e);
465		}
466		}
467
468		/**
469		* lockInterruptibly succeeds when unlocked, else is interruptible
470		*/
471	<	public void testLockInterruptibly2() {
472	<	final ReentrantLock lock = new ReentrantLock();
473	<	try {
474	<	lock.lockInterruptibly();
429	<	} catch (Exception e) {
430	<	unexpectedException();
431	<	}
432	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
471	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
472	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
473	>	public void testLockInterruptibly(boolean fair) {
474	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
475		try {
476	<	t.start();
477	<	t.interrupt();
478	<	assertTrue(lock.isLocked());
437	<	assertTrue(lock.isHeldByCurrentThread());
438	<	t.join();
439	<	} catch (Exception e){
440	<	unexpectedException();
476	>	lock.lockInterruptibly();
477	>	} catch (InterruptedException ie) {
478	>	threadUnexpectedException(ie);
479		}
480	+	assertLockedByMoi(lock);
481	+	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
482	+	waitForQueuedThread(lock, t);
483	+	t.interrupt();
484	+	assertTrue(lock.isLocked());
485	+	assertTrue(lock.isHeldByCurrentThread());
486	+	awaitTermination(t);
487	+	releaseLock(lock);
488		}
489
490		/**
491		* Calling await without holding lock throws IllegalMonitorStateException
492		*/
493	<	public void testAwait_IllegalMonitor() {
494	<	final ReentrantLock lock = new ReentrantLock();
493	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
494	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
495	>	public void testAwait_IMSE(boolean fair) {
496	>	final ReentrantLock lock = new ReentrantLock(fair);
497		final Condition c = lock.newCondition();
498	<	try {
499	<	c.await();
500	<	shouldThrow();
501	<	}
502	<	catch (IllegalMonitorStateException success) {
503	<	}
504	<	catch (Exception ex) {
505	<	unexpectedException();
498	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
499	>	long startTime = System.nanoTime();
500	>	try {
501	>	await(c, awaitMethod);
502	>	shouldThrow();
503	>	} catch (IllegalMonitorStateException success) {
504	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
505	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
506		}
507		}
508
509		/**
510		* Calling signal without holding lock throws IllegalMonitorStateException
511		*/
512	<	public void testSignal_IllegalMonitor() {
513	<	final ReentrantLock lock = new ReentrantLock();
512	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
513	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
514	>	public void testSignal_IMSE(boolean fair) {
515	>	final ReentrantLock lock = new ReentrantLock(fair);
516		final Condition c = lock.newCondition();
517		try {
518		c.signal();
519		shouldThrow();
520	<	}
471	<	catch (IllegalMonitorStateException success) {
472	<	}
473	<	catch (Exception ex) {
474	<	unexpectedException();
475	<	}
520	>	} catch (IllegalMonitorStateException success) {}
521		}
522
523		/**
524		* awaitNanos without a signal times out
525		*/
526	<	public void testAwaitNanos_Timeout() {
527	<	final ReentrantLock lock = new ReentrantLock();
528	<	final Condition c = lock.newCondition();
526	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
527	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
528	>	public void testAwaitNanos_Timeout(boolean fair) {
529		try {
530	+	final ReentrantLock lock = new ReentrantLock(fair);
531	+	final Condition c = lock.newCondition();
532		lock.lock();
533	<	long t = c.awaitNanos(100);
534	<	assertTrue(t <= 0);
533	>	long startTime = System.nanoTime();
534	>	long timeoutMillis = 10;
535	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
536	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
537	>	assertTrue(nanosRemaining <= 0);
538	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
539		lock.unlock();
540	<	}
541	<	catch (Exception ex) {
491	<	unexpectedException();
540	>	} catch (InterruptedException e) {
541	>	threadUnexpectedException(e);
542		}
543		}
544
545		/**
546	<	*  timed await without a signal times out
546	>	* timed await without a signal times out
547		*/
548	<	public void testAwait_Timeout() {
549	<	final ReentrantLock lock = new ReentrantLock();
550	<	final Condition c = lock.newCondition();
548	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
549	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
550	>	public void testAwait_Timeout(boolean fair) {
551		try {
552	+	final ReentrantLock lock = new ReentrantLock(fair);
553	+	final Condition c = lock.newCondition();
554		lock.lock();
555	<	c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
555	>	long startTime = System.nanoTime();
556	>	long timeoutMillis = 10;
557	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
558	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
559		lock.unlock();
560	<	}
561	<	catch (Exception ex) {
507	<	unexpectedException();
560	>	} catch (InterruptedException e) {
561	>	threadUnexpectedException(e);
562		}
563		}
564
565		/**
566		* awaitUntil without a signal times out
567		*/
568	<	public void testAwaitUntil_Timeout() {
569	<	final ReentrantLock lock = new ReentrantLock();
570	<	final Condition c = lock.newCondition();
568	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
569	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
570	>	public void testAwaitUntil_Timeout(boolean fair) {
571		try {
572	+	final ReentrantLock lock = new ReentrantLock(fair);
573	+	final Condition c = lock.newCondition();
574		lock.lock();
575	+	long startTime = System.nanoTime();
576	+	long timeoutMillis = 10;
577		java.util.Date d = new java.util.Date();
578	<	c.awaitUntil(new java.util.Date(d.getTime() + 10));
578	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
579	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
580		lock.unlock();
581	<	}
582	<	catch (Exception ex) {
524	<	unexpectedException();
581	>	} catch (InterruptedException e) {
582	>	threadUnexpectedException(e);
583		}
584		}
585
586		/**
587		* await returns when signalled
588		*/
589	<	public void testAwait() {
590	<	final ReentrantLock lock = new ReentrantLock();
589	>	public void testAwait()      { testAwait(false); }
590	>	public void testAwait_fair() { testAwait(true); }
591	>	public void testAwait(boolean fair) {
592	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
593		final Condition c = lock.newCondition();
594	<	Thread t = new Thread(new Runnable() {
595	<	public void run() {
596	<	try {
597	<	lock.lock();
598	<	c.await();
599	<	lock.unlock();
600	<	}
601	<	catch (InterruptedException e) {
542	<	threadUnexpectedException();
543	<	}
544	<	}
545	<	});
594	>	final CountDownLatch locked = new CountDownLatch(1);
595	>	Thread t = newStartedThread(new CheckedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	lock.lock();
598	>	locked.countDown();
599	>	c.await();
600	>	lock.unlock();
601	>	}});
602
603	<	try {
604	<	t.start();
605	<	Thread.sleep(SHORT_DELAY_MS);
606	<	lock.lock();
607	<	c.signal();
608	<	lock.unlock();
609	<	t.join(SHORT_DELAY_MS);
610	<	assertFalse(t.isAlive());
555	<	}
556	<	catch (Exception ex) {
557	<	unexpectedException();
558	<	}
603	>	await(locked);
604	>	lock.lock();
605	>	assertHasWaiters(lock, c, t);
606	>	c.signal();
607	>	assertHasNoWaiters(lock, c);
608	>	assertTrue(t.isAlive());
609	>	lock.unlock();
610	>	awaitTermination(t);
611		}
612
613		/**
614		* hasWaiters throws NPE if null
615		*/
616	<	public void testHasWaitersNPE() {
617	<	final ReentrantLock lock = new ReentrantLock();
616	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
617	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
618	>	public void testHasWaitersNPE(boolean fair) {
619	>	final ReentrantLock lock = new ReentrantLock(fair);
620		try {
621		lock.hasWaiters(null);
622		shouldThrow();
623	<	} catch (NullPointerException success) {
570	<	} catch (Exception ex) {
571	<	unexpectedException();
572	<	}
623	>	} catch (NullPointerException success) {}
624		}
625
626		/**
627		* getWaitQueueLength throws NPE if null
628		*/
629	<	public void testGetWaitQueueLengthNPE() {
630	<	final ReentrantLock lock = new ReentrantLock();
629	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
630	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
631	>	public void testGetWaitQueueLengthNPE(boolean fair) {
632	>	final ReentrantLock lock = new ReentrantLock(fair);
633		try {
634		lock.getWaitQueueLength(null);
635		shouldThrow();
636	<	} catch (NullPointerException success) {
584	<	} catch (Exception ex) {
585	<	unexpectedException();
586	<	}
636	>	} catch (NullPointerException success) {}
637		}
638
589	–
639		/**
640		* getWaitingThreads throws NPE if null
641		*/
642	<	public void testGetWaitingThreadsNPE() {
643	<	final PublicReentrantLock lock = new PublicReentrantLock();
642	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
643	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
644	>	public void testGetWaitingThreadsNPE(boolean fair) {
645	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
646		try {
647		lock.getWaitingThreads(null);
648		shouldThrow();
649	<	} catch (NullPointerException success) {
599	<	} catch (Exception ex) {
600	<	unexpectedException();
601	<	}
649	>	} catch (NullPointerException success) {}
650		}
651
604	–
652		/**
653	<	* hasWaiters throws IAE if not owned
653	>	* hasWaiters throws IllegalArgumentException if not owned
654		*/
655	<	public void testHasWaitersIAE() {
656	<	final ReentrantLock lock = new ReentrantLock();
657	<	final Condition c = (lock.newCondition());
658	<	final ReentrantLock lock2 = new ReentrantLock();
655	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
656	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
657	>	public void testHasWaitersIAE(boolean fair) {
658	>	final ReentrantLock lock = new ReentrantLock(fair);
659	>	final Condition c = lock.newCondition();
660	>	final ReentrantLock lock2 = new ReentrantLock(fair);
661		try {
662		lock2.hasWaiters(c);
663		shouldThrow();
664	<	} catch (IllegalArgumentException success) {
616	<	} catch (Exception ex) {
617	<	unexpectedException();
618	<	}
664	>	} catch (IllegalArgumentException success) {}
665		}
666
667		/**
668	<	* hasWaiters throws IMSE if not locked
668	>	* hasWaiters throws IllegalMonitorStateException if not locked
669		*/
670	<	public void testHasWaitersIMSE() {
671	<	final ReentrantLock lock = new ReentrantLock();
672	<	final Condition c = (lock.newCondition());
670	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
671	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
672	>	public void testHasWaitersIMSE(boolean fair) {
673	>	final ReentrantLock lock = new ReentrantLock(fair);
674	>	final Condition c = lock.newCondition();
675		try {
676		lock.hasWaiters(c);
677		shouldThrow();
678	<	} catch (IllegalMonitorStateException success) {
631	<	} catch (Exception ex) {
632	<	unexpectedException();
633	<	}
678	>	} catch (IllegalMonitorStateException success) {}
679		}
680
636	–
681		/**
682	<	* getWaitQueueLength throws IAE if not owned
682	>	* getWaitQueueLength throws IllegalArgumentException if not owned
683		*/
684	<	public void testGetWaitQueueLengthIAE() {
685	<	final ReentrantLock lock = new ReentrantLock();
686	<	final Condition c = (lock.newCondition());
687	<	final ReentrantLock lock2 = new ReentrantLock();
684	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
685	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
686	>	public void testGetWaitQueueLengthIAE(boolean fair) {
687	>	final ReentrantLock lock = new ReentrantLock(fair);
688	>	final Condition c = lock.newCondition();
689	>	final ReentrantLock lock2 = new ReentrantLock(fair);
690		try {
691		lock2.getWaitQueueLength(c);
692		shouldThrow();
693	<	} catch (IllegalArgumentException success) {
648	<	} catch (Exception ex) {
649	<	unexpectedException();
650	<	}
693	>	} catch (IllegalArgumentException success) {}
694		}
695
696		/**
697	<	* getWaitQueueLength throws IMSE if not locked
697	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
698		*/
699	<	public void testGetWaitQueueLengthIMSE() {
700	<	final ReentrantLock lock = new ReentrantLock();
701	<	final Condition c = (lock.newCondition());
699	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
700	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
701	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
702	>	final ReentrantLock lock = new ReentrantLock(fair);
703	>	final Condition c = lock.newCondition();
704		try {
705		lock.getWaitQueueLength(c);
706		shouldThrow();
707	<	} catch (IllegalMonitorStateException success) {
663	<	} catch (Exception ex) {
664	<	unexpectedException();
665	<	}
707	>	} catch (IllegalMonitorStateException success) {}
708		}
709
668	–
710		/**
711	<	* getWaitingThreads throws IAE if not owned
711	>	* getWaitingThreads throws IllegalArgumentException if not owned
712		*/
713	<	public void testGetWaitingThreadsIAE() {
714	<	final PublicReentrantLock lock = new PublicReentrantLock();
715	<	final Condition c = (lock.newCondition());
716	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
713	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
714	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
715	>	public void testGetWaitingThreadsIAE(boolean fair) {
716	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
717	>	final Condition c = lock.newCondition();
718	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
719		try {
720		lock2.getWaitingThreads(c);
721		shouldThrow();
722	<	} catch (IllegalArgumentException success) {
680	<	} catch (Exception ex) {
681	<	unexpectedException();
682	<	}
722	>	} catch (IllegalArgumentException success) {}
723		}
724
725		/**
726	<	* getWaitingThreads throws IMSE if not locked
726	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
727		*/
728	<	public void testGetWaitingThreadsIMSE() {
729	<	final PublicReentrantLock lock = new PublicReentrantLock();
730	<	final Condition c = (lock.newCondition());
728	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
729	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
730	>	public void testGetWaitingThreadsIMSE(boolean fair) {
731	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
732	>	final Condition c = lock.newCondition();
733		try {
734		lock.getWaitingThreads(c);
735		shouldThrow();
736	<	} catch (IllegalMonitorStateException success) {
695	<	} catch (Exception ex) {
696	<	unexpectedException();
697	<	}
736	>	} catch (IllegalMonitorStateException success) {}
737		}
738
700	–
701	–
739		/**
740		* hasWaiters returns true when a thread is waiting, else false
741		*/
742	<	public void testHasWaiters() {
743	<	final ReentrantLock lock = new ReentrantLock();
742	>	public void testHasWaiters()      { testHasWaiters(false); }
743	>	public void testHasWaiters_fair() { testHasWaiters(true); }
744	>	public void testHasWaiters(boolean fair) {
745	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
746		final Condition c = lock.newCondition();
747	<	Thread t = new Thread(new Runnable() {
748	<	public void run() {
749	<	try {
750	<	lock.lock();
751	<	threadAssertFalse(lock.hasWaiters(c));
752	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
753	<	c.await();
754	<	lock.unlock();
755	<	}
756	<	catch (InterruptedException e) {
757	<	threadUnexpectedException();
758	<	}
720	<	}
721	<	});
747	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
748	>	Thread t = newStartedThread(new CheckedRunnable() {
749	>	public void realRun() throws InterruptedException {
750	>	lock.lock();
751	>	assertHasNoWaiters(lock, c);
752	>	assertFalse(lock.hasWaiters(c));
753	>	pleaseSignal.countDown();
754	>	c.await();
755	>	assertHasNoWaiters(lock, c);
756	>	assertFalse(lock.hasWaiters(c));
757	>	lock.unlock();
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();
768	<	Thread.sleep(SHORT_DELAY_MS);
769	<	lock.lock();
733	<	assertFalse(lock.hasWaiters(c));
734	<	assertEquals(0, lock.getWaitQueueLength(c));
735	<	lock.unlock();
736	<	t.join(SHORT_DELAY_MS);
737	<	assertFalse(t.isAlive());
738	<	}
739	<	catch (Exception ex) {
740	<	unexpectedException();
741	<	}
760	>	await(pleaseSignal);
761	>	lock.lock();
762	>	assertHasWaiters(lock, c, t);
763	>	assertTrue(lock.hasWaiters(c));
764	>	c.signal();
765	>	assertHasNoWaiters(lock, c);
766	>	assertFalse(lock.hasWaiters(c));
767	>	lock.unlock();
768	>	awaitTermination(t);
769	>	assertHasNoWaiters(lock, c);
770		}
771
772		/**
773		* getWaitQueueLength returns number of waiting threads
774		*/
775	<	public void testGetWaitQueueLength() {
776	<	final ReentrantLock lock = new ReentrantLock();
775	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
776	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
777	>	public void testGetWaitQueueLength(boolean fair) {
778	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
779		final Condition c = lock.newCondition();
780	<	Thread t1 = new Thread(new Runnable() {
781	<	public void run() {
782	<	try {
783	<	lock.lock();
784	<	threadAssertFalse(lock.hasWaiters(c));
785	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
786	<	c.await();
787	<	lock.unlock();
788	<	}
789	<	catch (InterruptedException e) {
790	<	threadUnexpectedException();
761	<	}
762	<	}
763	<	});
764	<
765	<	Thread t2 = new Thread(new Runnable() {
766	<	public void run() {
767	<	try {
768	<	lock.lock();
769	<	threadAssertTrue(lock.hasWaiters(c));
770	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
771	<	c.await();
772	<	lock.unlock();
773	<	}
774	<	catch (InterruptedException e) {
775	<	threadUnexpectedException();
776	<	}
777	<	}
778	<	});
780	>	final CountDownLatch locked1 = new CountDownLatch(1);
781	>	final CountDownLatch locked2 = new CountDownLatch(1);
782	>	Thread t1 = new Thread(new CheckedRunnable() {
783	>	public void realRun() throws InterruptedException {
784	>	lock.lock();
785	>	assertFalse(lock.hasWaiters(c));
786	>	assertEquals(0, lock.getWaitQueueLength(c));
787	>	locked1.countDown();
788	>	c.await();
789	>	lock.unlock();
790	>	}});
791
792	<	try {
793	<	t1.start();
794	<	Thread.sleep(SHORT_DELAY_MS);
795	<	t2.start();
796	<	Thread.sleep(SHORT_DELAY_MS);
797	<	lock.lock();
798	<	assertTrue(lock.hasWaiters(c));
799	<	assertEquals(2, lock.getWaitQueueLength(c));
800	<	c.signalAll();
801	<	lock.unlock();
802	<	Thread.sleep(SHORT_DELAY_MS);
803	<	lock.lock();
804	<	assertFalse(lock.hasWaiters(c));
805	<	assertEquals(0, lock.getWaitQueueLength(c));
806	<	lock.unlock();
807	<	t1.join(SHORT_DELAY_MS);
808	<	t2.join(SHORT_DELAY_MS);
809	<	assertFalse(t1.isAlive());
810	<	assertFalse(t2.isAlive());
811	<	}
812	<	catch (Exception ex) {
813	<	unexpectedException();
814	<	}
792	>	Thread t2 = new Thread(new CheckedRunnable() {
793	>	public void realRun() throws InterruptedException {
794	>	lock.lock();
795	>	assertTrue(lock.hasWaiters(c));
796	>	assertEquals(1, lock.getWaitQueueLength(c));
797	>	locked2.countDown();
798	>	c.await();
799	>	lock.unlock();
800	>	}});
801	>
802	>	lock.lock();
803	>	assertEquals(0, lock.getWaitQueueLength(c));
804	>	lock.unlock();
805	>
806	>	t1.start();
807	>	await(locked1);
808	>
809	>	lock.lock();
810	>	assertHasWaiters(lock, c, t1);
811	>	assertEquals(1, lock.getWaitQueueLength(c));
812	>	lock.unlock();
813	>
814	>	t2.start();
815	>	await(locked2);
816	>
817	>	lock.lock();
818	>	assertHasWaiters(lock, c, t1, t2);
819	>	assertEquals(2, lock.getWaitQueueLength(c));
820	>	c.signalAll();
821	>	assertHasNoWaiters(lock, c);
822	>	lock.unlock();
823	>
824	>	awaitTermination(t1);
825	>	awaitTermination(t2);
826	>
827	>	assertHasNoWaiters(lock, c);
828		}
829
830		/**
831		* getWaitingThreads returns only and all waiting threads
832		*/
833	<	public void testGetWaitingThreads() {
834	<	final PublicReentrantLock lock = new PublicReentrantLock();
833	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
834	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
835	>	public void testGetWaitingThreads(boolean fair) {
836	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
837		final Condition c = lock.newCondition();
838	<	Thread t1 = new Thread(new Runnable() {
839	<	public void run() {
840	<	try {
841	<	lock.lock();
842	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
843	<	c.await();
844	<	lock.unlock();
845	<	}
846	<	catch (InterruptedException e) {
847	<	threadUnexpectedException();
821	<	}
822	<	}
823	<	});
824	<
825	<	Thread t2 = new Thread(new Runnable() {
826	<	public void run() {
827	<	try {
828	<	lock.lock();
829	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
830	<	c.await();
831	<	lock.unlock();
832	<	}
833	<	catch (InterruptedException e) {
834	<	threadUnexpectedException();
835	<	}
836	<	}
837	<	});
838	>	final CountDownLatch locked1 = new CountDownLatch(1);
839	>	final CountDownLatch locked2 = new CountDownLatch(1);
840	>	Thread t1 = new Thread(new CheckedRunnable() {
841	>	public void realRun() throws InterruptedException {
842	>	lock.lock();
843	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
844	>	locked1.countDown();
845	>	c.await();
846	>	lock.unlock();
847	>	}});
848
849	<	try {
850	<	lock.lock();
851	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
852	<	lock.unlock();
853	<	t1.start();
854	<	Thread.sleep(SHORT_DELAY_MS);
855	<	t2.start();
856	<	Thread.sleep(SHORT_DELAY_MS);
847	<	lock.lock();
848	<	assertTrue(lock.hasWaiters(c));
849	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
850	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
851	<	c.signalAll();
852	<	lock.unlock();
853	<	Thread.sleep(SHORT_DELAY_MS);
854	<	lock.lock();
855	<	assertFalse(lock.hasWaiters(c));
856	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
857	<	lock.unlock();
858	<	t1.join(SHORT_DELAY_MS);
859	<	t2.join(SHORT_DELAY_MS);
860	<	assertFalse(t1.isAlive());
861	<	assertFalse(t2.isAlive());
862	<	}
863	<	catch (Exception ex) {
864	<	unexpectedException();
865	<	}
866	<	}
849	>	Thread t2 = new Thread(new CheckedRunnable() {
850	>	public void realRun() throws InterruptedException {
851	>	lock.lock();
852	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
853	>	locked2.countDown();
854	>	c.await();
855	>	lock.unlock();
856	>	}});
857
858	<	/** A helper class for uninterruptible wait tests */
859	<	class UninterruptableThread extends Thread {
860	<	private ReentrantLock lock;
871	<	private Condition c;
872	<
873	<	public volatile boolean canAwake = false;
874	<	public volatile boolean interrupted = false;
875	<	public volatile boolean lockStarted = false;
876	<
877	<	public UninterruptableThread(ReentrantLock lock, Condition c) {
878	<	this.lock = lock;
879	<	this.c = c;
880	<	}
858	>	lock.lock();
859	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
860	>	lock.unlock();
861
862	<	public synchronized void run() {
863	<	lock.lock();
884	<	lockStarted = true;
862	>	t1.start();
863	>	await(locked1);
864
865	<	while (!canAwake) {
866	<	c.awaitUninterruptibly();
867	<	}
865	>	lock.lock();
866	>	assertHasWaiters(lock, c, t1);
867	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
868	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
869	>	assertEquals(1, lock.getWaitingThreads(c).size());
870	>	lock.unlock();
871
872	<	interrupted = isInterrupted();
873	<	lock.unlock();
874	<	}
872	>	t2.start();
873	>	await(locked2);
874	>
875	>	lock.lock();
876	>	assertHasWaiters(lock, c, t1, t2);
877	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
878	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
879	>	assertEquals(2, lock.getWaitingThreads(c).size());
880	>	c.signalAll();
881	>	assertHasNoWaiters(lock, c);
882	>	lock.unlock();
883	>
884	>	awaitTermination(t1);
885	>	awaitTermination(t2);
886	>
887	>	assertHasNoWaiters(lock, c);
888		}
889
890		/**
891	<	* awaitUninterruptibly doesn't abort on interrupt
891	>	* awaitUninterruptibly is uninterruptible
892		*/
893	<	public void testAwaitUninterruptibly() {
894	<	final ReentrantLock lock = new ReentrantLock();
893	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
894	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
895	>	public void testAwaitUninterruptibly(boolean fair) {
896	>	final ReentrantLock lock = new ReentrantLock(fair);
897		final Condition c = lock.newCondition();
898	<	UninterruptableThread thread = new UninterruptableThread(lock, c);
902	<
903	<	try {
904	<	thread.start();
898	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
899
900	<	while (!thread.lockStarted) {
901	<	Thread.sleep(100);
902	<	}
900	>	Thread t1 = newStartedThread(new CheckedRunnable() {
901	>	public void realRun() {
902	>	// Interrupt before awaitUninterruptibly
903	>	lock.lock();
904	>	pleaseInterrupt.countDown();
905	>	Thread.currentThread().interrupt();
906	>	c.awaitUninterruptibly();
907	>	assertTrue(Thread.interrupted());
908	>	lock.unlock();
909	>	}});
910
911	<	lock.lock();
912	<	try {
913	<	thread.interrupt();
914	<	thread.canAwake = true;
915	<	c.signal();
916	<	} finally {
911	>	Thread t2 = newStartedThread(new CheckedRunnable() {
912	>	public void realRun() {
913	>	// Interrupt during awaitUninterruptibly
914	>	lock.lock();
915	>	pleaseInterrupt.countDown();
916	>	c.awaitUninterruptibly();
917	>	assertTrue(Thread.interrupted());
918		lock.unlock();
919	<	}
919	>	}});
920
921	<	thread.join();
922	<	assertTrue(thread.interrupted);
923	<	assertFalse(thread.isAlive());
924	<	} catch (Exception ex) {
923	<	unexpectedException();
924	<	}
925	<	}
921	>	await(pleaseInterrupt);
922	>	lock.lock();
923	>	lock.unlock();
924	>	t2.interrupt();
925
926	<	/**
927	<	* await is interruptible
929	<	*/
930	<	public void testAwait_Interrupt() {
931	<	final ReentrantLock lock = new ReentrantLock();
932	<	final Condition c = lock.newCondition();
933	<	Thread t = new Thread(new Runnable() {
934	<	public void run() {
935	<	try {
936	<	lock.lock();
937	<	c.await();
938	<	lock.unlock();
939	<	threadShouldThrow();
940	<	}
941	<	catch (InterruptedException success) {
942	<	}
943	<	}
944	<	});
926	>	assertThreadStaysAlive(t1);
927	>	assertTrue(t2.isAlive());
928
929	<	try {
930	<	t.start();
931	<	Thread.sleep(SHORT_DELAY_MS);
932	<	t.interrupt();
933	<	t.join(SHORT_DELAY_MS);
934	<	assertFalse(t.isAlive());
952	<	}
953	<	catch (Exception ex) {
954	<	unexpectedException();
955	<	}
929	>	lock.lock();
930	>	c.signalAll();
931	>	lock.unlock();
932	>
933	>	awaitTermination(t1);
934	>	awaitTermination(t2);
935		}
936
937		/**
938	<	* awaitNanos is interruptible
939	<	*/
940	<	public void testAwaitNanos_Interrupt() {
941	<	final ReentrantLock lock = new ReentrantLock();
938	>	* await/awaitNanos/awaitUntil is interruptible
939	>	*/
940	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
941	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
942	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
943	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
944	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
945	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
946	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
947	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
948	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
949	>	final PublicReentrantLock lock =
950	>	new PublicReentrantLock(fair);
951		final Condition c = lock.newCondition();
952	<	Thread t = new Thread(new Runnable() {
953	<	public void run() {
954	<	try {
955	<	lock.lock();
956	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
957	<	lock.unlock();
958	<	threadShouldThrow();
959	<	}
960	<	catch (InterruptedException success) {
961	<	}
962	<	}
963	<	});
964	<
965	<	try {
966	<	t.start();
967	<	Thread.sleep(SHORT_DELAY_MS);
968	<	t.interrupt();
969	<	t.join(SHORT_DELAY_MS);
970	<	assertFalse(t.isAlive());
971	<	}
972	<	catch (Exception ex) {
973	<	unexpectedException();
986	<	}
952	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
953	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
954	>	public void realRun() throws InterruptedException {
955	>	lock.lock();
956	>	assertLockedByMoi(lock);
957	>	assertHasNoWaiters(lock, c);
958	>	pleaseInterrupt.countDown();
959	>	try {
960	>	await(c, awaitMethod);
961	>	} finally {
962	>	assertLockedByMoi(lock);
963	>	assertHasNoWaiters(lock, c);
964	>	lock.unlock();
965	>	assertFalse(Thread.interrupted());
966	>	}
967	>	}});
968	>
969	>	await(pleaseInterrupt);
970	>	assertHasWaiters(lock, c, t);
971	>	t.interrupt();
972	>	awaitTermination(t);
973	>	assertNotLocked(lock);
974		}
975
976		/**
977	<	* awaitUntil is interruptible
977	>	* signalAll wakes up all threads
978		*/
979	<	public void testAwaitUntil_Interrupt() {
980	<	final ReentrantLock lock = new ReentrantLock();
979	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
980	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
981	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
982	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
983	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
984	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
985	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
986	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
987	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
988	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
989		final Condition c = lock.newCondition();
990	<	Thread t = new Thread(new Runnable() {
991	<	public void run() {
992	<	try {
993	<	lock.lock();
994	<	java.util.Date d = new java.util.Date();
995	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
996	<	lock.unlock();
997	<	threadShouldThrow();
1003	<	}
1004	<	catch (InterruptedException success) {
1005	<	}
1006	<	}
1007	<	});
1008	<
1009	<	try {
1010	<	t.start();
1011	<	Thread.sleep(SHORT_DELAY_MS);
1012	<	t.interrupt();
1013	<	t.join(SHORT_DELAY_MS);
1014	<	assertFalse(t.isAlive());
1015	<	}
1016	<	catch (Exception ex) {
1017	<	unexpectedException();
990	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
991	>	class Awaiter extends CheckedRunnable {
992	>	public void realRun() throws InterruptedException {
993	>	lock.lock();
994	>	pleaseSignal.countDown();
995	>	await(c, awaitMethod);
996	>	lock.unlock();
997	>	}
998		}
999	+
1000	+	Thread t1 = newStartedThread(new Awaiter());
1001	+	Thread t2 = newStartedThread(new Awaiter());
1002	+
1003	+	await(pleaseSignal);
1004	+	lock.lock();
1005	+	assertHasWaiters(lock, c, t1, t2);
1006	+	c.signalAll();
1007	+	assertHasNoWaiters(lock, c);
1008	+	lock.unlock();
1009	+	awaitTermination(t1);
1010	+	awaitTermination(t2);
1011		}
1012
1013		/**
1014	<	* signalAll wakes up all threads
1015	<	*/
1016	<	public void testSignalAll() {
1017	<	final ReentrantLock lock = new ReentrantLock();
1014	>	* signal wakes up waiting threads in FIFO order
1015	>	*/
1016	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1017	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1018	>	public void testSignalWakesFifo(boolean fair) {
1019	>	final PublicReentrantLock lock =
1020	>	new PublicReentrantLock(fair);
1021		final Condition c = lock.newCondition();
1022	<	Thread t1 = new Thread(new Runnable() {
1023	<	public void run() {
1024	<	try {
1025	<	lock.lock();
1026	<	c.await();
1027	<	lock.unlock();
1028	<	}
1029	<	catch (InterruptedException e) {
1030	<	threadUnexpectedException();
1036	<	}
1037	<	}
1038	<	});
1039	<
1040	<	Thread t2 = new Thread(new Runnable() {
1041	<	public void run() {
1042	<	try {
1043	<	lock.lock();
1044	<	c.await();
1045	<	lock.unlock();
1046	<	}
1047	<	catch (InterruptedException e) {
1048	<	threadUnexpectedException();
1049	<	}
1050	<	}
1051	<	});
1022	>	final CountDownLatch locked1 = new CountDownLatch(1);
1023	>	final CountDownLatch locked2 = new CountDownLatch(1);
1024	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1025	>	public void realRun() throws InterruptedException {
1026	>	lock.lock();
1027	>	locked1.countDown();
1028	>	c.await();
1029	>	lock.unlock();
1030	>	}});
1031
1032	<	try {
1033	<	t1.start();
1034	<	t2.start();
1035	<	Thread.sleep(SHORT_DELAY_MS);
1036	<	lock.lock();
1037	<	c.signalAll();
1038	<	lock.unlock();
1039	<	t1.join(SHORT_DELAY_MS);
1040	<	t2.join(SHORT_DELAY_MS);
1041	<	assertFalse(t1.isAlive());
1042	<	assertFalse(t2.isAlive());
1043	<	}
1044	<	catch (Exception ex) {
1045	<	unexpectedException();
1046	<	}
1032	>	await(locked1);
1033	>
1034	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1035	>	public void realRun() throws InterruptedException {
1036	>	lock.lock();
1037	>	locked2.countDown();
1038	>	c.await();
1039	>	lock.unlock();
1040	>	}});
1041	>
1042	>	await(locked2);
1043	>
1044	>	lock.lock();
1045	>	assertHasWaiters(lock, c, t1, t2);
1046	>	assertFalse(lock.hasQueuedThreads());
1047	>	c.signal();
1048	>	assertHasWaiters(lock, c, t2);
1049	>	assertTrue(lock.hasQueuedThread(t1));
1050	>	assertFalse(lock.hasQueuedThread(t2));
1051	>	c.signal();
1052	>	assertHasNoWaiters(lock, c);
1053	>	assertTrue(lock.hasQueuedThread(t1));
1054	>	assertTrue(lock.hasQueuedThread(t2));
1055	>	lock.unlock();
1056	>	awaitTermination(t1);
1057	>	awaitTermination(t2);
1058		}
1059
1060		/**
1061		* await after multiple reentrant locking preserves lock count
1062		*/
1063	<	public void testAwaitLockCount() {
1064	<	final ReentrantLock lock = new ReentrantLock();
1063	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1064	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1065	>	public void testAwaitLockCount(boolean fair) {
1066	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1067		final Condition c = lock.newCondition();
1068	<	Thread t1 = new Thread(new Runnable() {
1069	<	public void run() {
1070	<	try {
1071	<	lock.lock();
1072	<	threadAssertEquals(1, lock.getHoldCount());
1073	<	c.await();
1074	<	threadAssertEquals(1, lock.getHoldCount());
1075	<	lock.unlock();
1076	<	}
1077	<	catch (InterruptedException e) {
1078	<	threadUnexpectedException();
1079	<	}
1088	<	}
1089	<	});
1090	<
1091	<	Thread t2 = new Thread(new Runnable() {
1092	<	public void run() {
1093	<	try {
1094	<	lock.lock();
1095	<	lock.lock();
1096	<	threadAssertEquals(2, lock.getHoldCount());
1097	<	c.await();
1098	<	threadAssertEquals(2, lock.getHoldCount());
1099	<	lock.unlock();
1100	<	lock.unlock();
1101	<	}
1102	<	catch (InterruptedException e) {
1103	<	threadUnexpectedException();
1104	<	}
1105	<	}
1106	<	});
1068	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1069	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1070	>	public void realRun() throws InterruptedException {
1071	>	lock.lock();
1072	>	assertLockedByMoi(lock);
1073	>	assertEquals(1, lock.getHoldCount());
1074	>	pleaseSignal.countDown();
1075	>	c.await();
1076	>	assertLockedByMoi(lock);
1077	>	assertEquals(1, lock.getHoldCount());
1078	>	lock.unlock();
1079	>	}});
1080
1081	<	try {
1082	<	t1.start();
1083	<	t2.start();
1084	<	Thread.sleep(SHORT_DELAY_MS);
1085	<	lock.lock();
1086	<	c.signalAll();
1087	<	lock.unlock();
1088	<	t1.join(SHORT_DELAY_MS);
1089	<	t2.join(SHORT_DELAY_MS);
1090	<	assertFalse(t1.isAlive());
1091	<	assertFalse(t2.isAlive());
1092	<	}
1093	<	catch (Exception ex) {
1094	<	unexpectedException();
1095	<	}
1081	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1082	>	public void realRun() throws InterruptedException {
1083	>	lock.lock();
1084	>	lock.lock();
1085	>	assertLockedByMoi(lock);
1086	>	assertEquals(2, lock.getHoldCount());
1087	>	pleaseSignal.countDown();
1088	>	c.await();
1089	>	assertLockedByMoi(lock);
1090	>	assertEquals(2, lock.getHoldCount());
1091	>	lock.unlock();
1092	>	lock.unlock();
1093	>	}});
1094	>
1095	>	await(pleaseSignal);
1096	>	lock.lock();
1097	>	assertHasWaiters(lock, c, t1, t2);
1098	>	assertEquals(1, lock.getHoldCount());
1099	>	c.signalAll();
1100	>	assertHasNoWaiters(lock, c);
1101	>	lock.unlock();
1102	>	awaitTermination(t1);
1103	>	awaitTermination(t2);
1104		}
1105
1106		/**
1107		* A serialized lock deserializes as unlocked
1108		*/
1109	<	public void testSerialization() {
1110	<	ReentrantLock l = new ReentrantLock();
1111	<	l.lock();
1112	<	l.unlock();
1109	>	public void testSerialization()      { testSerialization(false); }
1110	>	public void testSerialization_fair() { testSerialization(true); }
1111	>	public void testSerialization(boolean fair) {
1112	>	ReentrantLock lock = new ReentrantLock(fair);
1113	>	lock.lock();
1114
1115	<	try {
1116	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1117	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1118	<	out.writeObject(l);
1119	<	out.close();
1120	<
1121	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1122	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1123	<	ReentrantLock r = (ReentrantLock) in.readObject();
1124	<	r.lock();
1125	<	r.unlock();
1126	<	} catch (Exception e){
1127	<	e.printStackTrace();
1128	<	unexpectedException();
1129	<	}
1115	>	ReentrantLock clone = serialClone(lock);
1116	>	assertEquals(lock.isFair(), clone.isFair());
1117	>	assertTrue(lock.isLocked());
1118	>	assertFalse(clone.isLocked());
1119	>	assertEquals(1, lock.getHoldCount());
1120	>	assertEquals(0, clone.getHoldCount());
1121	>	clone.lock();
1122	>	clone.lock();
1123	>	assertTrue(clone.isLocked());
1124	>	assertEquals(2, clone.getHoldCount());
1125	>	assertEquals(1, lock.getHoldCount());
1126	>	clone.unlock();
1127	>	clone.unlock();
1128	>	assertTrue(lock.isLocked());
1129	>	assertFalse(clone.isLocked());
1130		}
1131
1132		/**
1133		* toString indicates current lock state
1134		*/
1135	<	public void testToString() {
1136	<	ReentrantLock lock = new ReentrantLock();
1137	<	String us = lock.toString();
1138	<	assertTrue(us.indexOf("Unlocked") >= 0);
1135	>	public void testToString()      { testToString(false); }
1136	>	public void testToString_fair() { testToString(true); }
1137	>	public void testToString(boolean fair) {
1138	>	ReentrantLock lock = new ReentrantLock(fair);
1139	>	assertTrue(lock.toString().contains("Unlocked"));
1140		lock.lock();
1141	<	String ls = lock.toString();
1142	<	assertTrue(ls.indexOf("Locked") >= 0);
1141	>	assertTrue(lock.toString().contains("Locked"));
1142	>	lock.unlock();
1143	>	assertTrue(lock.toString().contains("Unlocked"));
1144		}
1161	–
1145		}

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