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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.5 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.43 by jsr166, Sat May 7 03:36:23 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.util.*;
14		import java.io.*;
15
16		public class ReentrantLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantLockTest.class);
21	>	return new TestSuite(ReentrantLockTest.class);
22		}
23
24	<	static int HOLD_COUNT_TEST_LIMIT = 20;
25	<
26	<	class InterruptibleLockRunnable implements Runnable {
24	>	/**
25	>	* A runnable calling lockInterruptibly
26	>	*/
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantLock lock;
29		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
30	<	public void run(){
31	<	try{
29	<	lock.lockInterruptibly();
30	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.lockInterruptibly();
32		}
33		}
34
35	<	// Same, except must interrupt
36	<	class InterruptedLockRunnable implements Runnable {
35	>
36	>	/**
37	>	* A runnable calling lockInterruptibly that expects to be
38	>	* interrupted
39	>	*/
40	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
41		final ReentrantLock lock;
42		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
43	<	public void run(){
44	<	try{
40	<	lock.lockInterruptibly();
41	<	threadFail("should throw");
42	<	} catch(InterruptedException success){}
43	>	public void realRun() throws InterruptedException {
44	>	lock.lockInterruptibly();
45		}
46		}
47
48		/**
49	<	* To expose protected methods
49	>	* Subclass to expose protected methods
50		*/
51	<	static class MyReentrantLock extends ReentrantLock {
52	<	MyReentrantLock() { super(); }
53	<	public Collection<Thread> getQueuedThreads() {
54	<	return super.getQueuedThreads();
51	>	static class PublicReentrantLock extends ReentrantLock {
52	>	PublicReentrantLock() { super(); }
53	>	public Collection<Thread> getQueuedThreads() {
54	>	return super.getQueuedThreads();
55		}
56	<	public ConditionObject newCondition() {
57	<	return new MyCondition(this);
56	>	public Collection<Thread> getWaitingThreads(Condition c) {
57	>	return super.getWaitingThreads(c);
58		}
59	+	}
60
61	<	static class MyCondition extends ReentrantLock.ConditionObject {
62	<	MyCondition(MyReentrantLock l) { super(l); }
63	<	public Collection<Thread> getWaitingThreads() {
64	<	return super.getWaitingThreads();
65	<	}
66	<	}
61	>	/**
62	>	* Checks that condition c has no waiters.
63	>	*/
64	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
65	>	assertHasWaiters(lock, c, new Thread[] {});
66	>	}
67	>
68	>	/**
69	>	* Checks that condition c has exactly the given waiter threads.
70	>	*/
71	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
72	>	Thread... threads) {
73	>	lock.lock();
74	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
75	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
76	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
77	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
78	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
79	>	new HashSet<Thread>(Arrays.asList(threads)));
80	>	lock.unlock();
81	>	}
82
83	+	/**
84	+	* Constructor sets given fairness
85	+	*/
86	+	public void testConstructor() {
87	+	assertFalse(new ReentrantLock().isFair());
88	+	assertFalse(new ReentrantLock(false).isFair());
89	+	assertTrue(new ReentrantLock(true).isFair());
90		}
91
92	<	/*
93	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
92	>	/**
93	>	* locking an unlocked lock succeeds
94		*/
95	<	public void testIllegalMonitorStateException(){
96	<	ReentrantLock rl = new ReentrantLock();
97	<	try{
98	<	rl.unlock();
99	<	fail("Should of thown Illegal Monitor State Exception");
95	>	public void testLock() {
96	>	ReentrantLock rl = new ReentrantLock();
97	>	rl.lock();
98	>	assertTrue(rl.isLocked());
99	>	rl.unlock();
100	>	assertFalse(rl.isLocked());
101	>	}
102
103	<	} catch(IllegalMonitorStateException success){}
103	>	/**
104	>	* locking an unlocked fair lock succeeds
105	>	*/
106	>	public void testFairLock() {
107	>	ReentrantLock rl = new ReentrantLock(true);
108	>	rl.lock();
109	>	assertTrue(rl.isLocked());
110	>	rl.unlock();
111		}
112
113	<	/*
114	<	* lockInterruptibly is interruptible.
113	>	/**
114	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
115		*/
116	<	public void testInterruptedException(){
117	<	final ReentrantLock lock = new ReentrantLock();
84	<	lock.lock();
85	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
116	>	public void testUnlock_IllegalMonitorStateException() {
117	>	ReentrantLock rl = new ReentrantLock();
118		try {
119	<	t.start();
120	<	t.interrupt();
121	<	lock.unlock();
122	<	t.join();
123	<	} catch(Exception e){
124	<	fail("unexpected exception");
125	<	}
126	<	}
119	>	rl.unlock();
120	>	shouldThrow();
121	>	} catch (IllegalMonitorStateException success) {}
122	>	}
123	>
124	>	/**
125	>	* tryLock on an unlocked lock succeeds
126	>	*/
127	>	public void testTryLock() {
128	>	ReentrantLock rl = new ReentrantLock();
129	>	assertTrue(rl.tryLock());
130	>	assertTrue(rl.isLocked());
131	>	rl.unlock();
132	>	}
133	>
134	>
135	>	/**
136	>	* hasQueuedThreads reports whether there are waiting threads
137	>	*/
138	>	public void testhasQueuedThreads() throws InterruptedException {
139	>	final ReentrantLock lock = new ReentrantLock();
140	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
141	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
142	>	assertFalse(lock.hasQueuedThreads());
143	>	lock.lock();
144	>	t1.start();
145	>	delay(SHORT_DELAY_MS);
146	>	assertTrue(lock.hasQueuedThreads());
147	>	t2.start();
148	>	delay(SHORT_DELAY_MS);
149	>	assertTrue(lock.hasQueuedThreads());
150	>	t1.interrupt();
151	>	delay(SHORT_DELAY_MS);
152	>	assertTrue(lock.hasQueuedThreads());
153	>	lock.unlock();
154	>	delay(SHORT_DELAY_MS);
155	>	assertFalse(lock.hasQueuedThreads());
156	>	awaitTermination(t1);
157	>	awaitTermination(t2);
158	>	}
159	>
160	>	/**
161	>	* getQueueLength reports number of waiting threads
162	>	*/
163	>	public void testGetQueueLength() throws InterruptedException {
164	>	final ReentrantLock lock = new ReentrantLock();
165	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
166	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
167	>	assertEquals(0, lock.getQueueLength());
168	>	lock.lock();
169	>	t1.start();
170	>	delay(SHORT_DELAY_MS);
171	>	assertEquals(1, lock.getQueueLength());
172	>	t2.start();
173	>	delay(SHORT_DELAY_MS);
174	>	assertEquals(2, lock.getQueueLength());
175	>	t1.interrupt();
176	>	delay(SHORT_DELAY_MS);
177	>	assertEquals(1, lock.getQueueLength());
178	>	lock.unlock();
179	>	delay(SHORT_DELAY_MS);
180	>	assertEquals(0, lock.getQueueLength());
181	>	awaitTermination(t1);
182	>	awaitTermination(t2);
183	>	}
184
185	<	/*
186	<	* getLockQueueLength reports number of waiting threads
185	>	/**
186	>	* getQueueLength reports number of waiting threads
187		*/
188	<	public void testgetLockQueueLength(){
189	<	final ReentrantLock lock = new ReentrantLock();
188	>	public void testGetQueueLength_fair() throws InterruptedException {
189	>	final ReentrantLock lock = new ReentrantLock(true);
190		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
191		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
192	+	assertEquals(0, lock.getQueueLength());
193	+	lock.lock();
194	+	t1.start();
195	+	delay(SHORT_DELAY_MS);
196	+	assertEquals(1, lock.getQueueLength());
197	+	t2.start();
198	+	delay(SHORT_DELAY_MS);
199	+	assertEquals(2, lock.getQueueLength());
200	+	t1.interrupt();
201	+	delay(SHORT_DELAY_MS);
202	+	assertEquals(1, lock.getQueueLength());
203	+	lock.unlock();
204	+	delay(SHORT_DELAY_MS);
205	+	assertEquals(0, lock.getQueueLength());
206	+	awaitTermination(t1);
207	+	awaitTermination(t2);
208	+	}
209	+
210	+	/**
211	+	* hasQueuedThread(null) throws NPE
212	+	*/
213	+	public void testHasQueuedThreadNPE() {
214	+	final ReentrantLock sync = new ReentrantLock();
215		try {
216	<	assertEquals(0, lock.getLockQueueLength());
217	<	lock.lock();
218	<	t1.start();
219	<	Thread.sleep(SHORT_DELAY_MS);
220	<	assertEquals(1, lock.getLockQueueLength());
221	<	t2.start();
222	<	Thread.sleep(SHORT_DELAY_MS);
223	<	assertEquals(2, lock.getLockQueueLength());
224	<	t1.interrupt();
225	<	Thread.sleep(SHORT_DELAY_MS);
226	<	assertEquals(1, lock.getLockQueueLength());
227	<	lock.unlock();
228	<	Thread.sleep(SHORT_DELAY_MS);
229	<	assertEquals(0, lock.getLockQueueLength());
230	<	t1.join();
231	<	t2.join();
232	<	} catch(Exception e){
233	<	fail("unexpected exception");
234	<	}
235	<	}
216	>	sync.hasQueuedThread(null);
217	>	shouldThrow();
218	>	} catch (NullPointerException success) {}
219	>	}
220	>
221	>	/**
222	>	* hasQueuedThread reports whether a thread is queued.
223	>	*/
224	>	public void testHasQueuedThread() throws InterruptedException {
225	>	final ReentrantLock sync = new ReentrantLock();
226	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
227	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
228	>	assertFalse(sync.hasQueuedThread(t1));
229	>	assertFalse(sync.hasQueuedThread(t2));
230	>	sync.lock();
231	>	t1.start();
232	>	delay(SHORT_DELAY_MS);
233	>	assertTrue(sync.hasQueuedThread(t1));
234	>	t2.start();
235	>	delay(SHORT_DELAY_MS);
236	>	assertTrue(sync.hasQueuedThread(t1));
237	>	assertTrue(sync.hasQueuedThread(t2));
238	>	t1.interrupt();
239	>	delay(SHORT_DELAY_MS);
240	>	assertFalse(sync.hasQueuedThread(t1));
241	>	assertTrue(sync.hasQueuedThread(t2));
242	>	sync.unlock();
243	>	delay(SHORT_DELAY_MS);
244	>	assertFalse(sync.hasQueuedThread(t1));
245	>	delay(SHORT_DELAY_MS);
246	>	assertFalse(sync.hasQueuedThread(t2));
247	>	awaitTermination(t1);
248	>	awaitTermination(t2);
249	>	}
250	>
251
252	<	/*
252	>	/**
253		* getQueuedThreads includes waiting threads
254		*/
255	<	public void testGetQueuedThreads(){
256	<	final MyReentrantLock lock = new MyReentrantLock();
255	>	public void testGetQueuedThreads() throws InterruptedException {
256	>	final PublicReentrantLock lock = new PublicReentrantLock();
257		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
258		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
259	<	try {
260	<	assertTrue(lock.getQueuedThreads().isEmpty());
261	<	lock.lock();
262	<	assertTrue(lock.getQueuedThreads().isEmpty());
263	<	t1.start();
264	<	Thread.sleep(SHORT_DELAY_MS);
265	<	assertTrue(lock.getQueuedThreads().contains(t1));
266	<	t2.start();
267	<	Thread.sleep(SHORT_DELAY_MS);
268	<	assertTrue(lock.getQueuedThreads().contains(t1));
269	<	assertTrue(lock.getQueuedThreads().contains(t2));
270	<	t1.interrupt();
271	<	Thread.sleep(SHORT_DELAY_MS);
272	<	assertFalse(lock.getQueuedThreads().contains(t1));
273	<	assertTrue(lock.getQueuedThreads().contains(t2));
274	<	lock.unlock();
275	<	Thread.sleep(SHORT_DELAY_MS);
276	<	assertTrue(lock.getQueuedThreads().isEmpty());
277	<	t1.join();
278	<	t2.join();
152	<	} catch(Exception e){
153	<	fail("unexpected exception");
154	<	}
155	<	}
259	>	assertTrue(lock.getQueuedThreads().isEmpty());
260	>	lock.lock();
261	>	assertTrue(lock.getQueuedThreads().isEmpty());
262	>	t1.start();
263	>	delay(SHORT_DELAY_MS);
264	>	assertTrue(lock.getQueuedThreads().contains(t1));
265	>	t2.start();
266	>	delay(SHORT_DELAY_MS);
267	>	assertTrue(lock.getQueuedThreads().contains(t1));
268	>	assertTrue(lock.getQueuedThreads().contains(t2));
269	>	t1.interrupt();
270	>	delay(SHORT_DELAY_MS);
271	>	assertFalse(lock.getQueuedThreads().contains(t1));
272	>	assertTrue(lock.getQueuedThreads().contains(t2));
273	>	lock.unlock();
274	>	delay(SHORT_DELAY_MS);
275	>	assertTrue(lock.getQueuedThreads().isEmpty());
276	>	awaitTermination(t1);
277	>	awaitTermination(t2);
278	>	}
279
280
281	<	/*
282	<	* timed trylock is interruptible.
281	>	/**
282	>	* timed tryLock is interruptible.
283		*/
284	<	public void testInterruptedException2(){
285	<	final ReentrantLock lock = new ReentrantLock();
286	<	lock.lock();
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run(){
289	<	try{
290	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
291	<	threadFail("should throw");
292	<	} catch(InterruptedException success){}
293	<	}
294	<	});
172	<	try {
173	<	t.start();
174	<	t.interrupt();
175	<	} catch(Exception e){
176	<	fail("unexpected exception");
177	<	}
284	>	public void testInterruptedException2() throws InterruptedException {
285	>	final ReentrantLock lock = new ReentrantLock();
286	>	lock.lock();
287	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
288	>	public void realRun() throws InterruptedException {
289	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
290	>	}});
291	>
292	>	delay(SHORT_DELAY_MS);
293	>	t.interrupt();
294	>	awaitTermination(t);
295		}
296
297
298		/**
299	<	* Trylock on a locked lock fails
299	>	* TryLock on a locked lock fails
300		*/
301	<	public void testTryLockWhenLocked() {
302	<	final ReentrantLock lock = new ReentrantLock();
303	<	lock.lock();
304	<	Thread t = new Thread(new Runnable() {
305	<	public void run(){
306	<	threadAssertFalse(lock.tryLock());
307	<	}
308	<	});
309	<	try {
310	<	t.start();
311	<	t.join();
195	<	lock.unlock();
196	<	} catch(Exception e){
197	<	fail("unexpected exception");
198	<	}
199	<	}
301	>	public void testTryLockWhenLocked() throws InterruptedException {
302	>	final ReentrantLock lock = new ReentrantLock();
303	>	lock.lock();
304	>	Thread t = newStartedThread(new CheckedRunnable() {
305	>	public void realRun() {
306	>	assertFalse(lock.tryLock());
307	>	}});
308	>
309	>	awaitTermination(t);
310	>	lock.unlock();
311	>	}
312
313		/**
314	<	* Timed Trylock on a locked lock times out
314	>	* Timed tryLock on a locked lock times out
315		*/
316	<	public void testTryLock_Timeout(){
317	<	final ReentrantLock lock = new ReentrantLock();
318	<	lock.lock();
319	<	Thread t = new Thread(new Runnable() {
320	<	public void run(){
321	<	try {
322	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
323	<	} catch (Exception ex) {
324	<	threadFail("unexpected exception");
325	<	}
326	<	}
327	<	});
216	<	try {
217	<	t.start();
218	<	t.join();
219	<	lock.unlock();
220	<	} catch(Exception e){
221	<	fail("unexpected exception");
222	<	}
223	<	}
224	<
316	>	public void testTryLock_Timeout() throws InterruptedException {
317	>	final ReentrantLock lock = new ReentrantLock();
318	>	lock.lock();
319	>	Thread t = newStartedThread(new CheckedRunnable() {
320	>	public void realRun() throws InterruptedException {
321	>	assertFalse(lock.tryLock(1, MILLISECONDS));
322	>	}});
323	>
324	>	awaitTermination(t);
325	>	lock.unlock();
326	>	}
327	>
328		/**
329		* getHoldCount returns number of recursive holds
330		*/
331		public void testGetHoldCount() {
332	<	ReentrantLock lock = new ReentrantLock();
333	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
334	<	lock.lock();
335	<	assertEquals(i,lock.getHoldCount());
336	<	}
337	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
338	<	lock.unlock();
339	<	assertEquals(i-1,lock.getHoldCount());
340	<	}
332	>	ReentrantLock lock = new ReentrantLock();
333	>	for (int i = 1; i <= SIZE; i++) {
334	>	lock.lock();
335	>	assertEquals(i, lock.getHoldCount());
336	>	}
337	>	for (int i = SIZE; i > 0; i--) {
338	>	lock.unlock();
339	>	assertEquals(i-1, lock.getHoldCount());
340	>	}
341		}
342	<
343	<
342	>
343	>
344		/**
345		* isLocked is true when locked and false when not
346		*/
347	<	public void testIsLocked() {
348	<	final ReentrantLock lock = new ReentrantLock();
349	<	lock.lock();
350	<	assertTrue(lock.isLocked());
351	<	lock.unlock();
352	<	assertFalse(lock.isLocked());
353	<	Thread t = new Thread(new Runnable() {
354	<	public void run() {
355	<	lock.lock();
356	<	try {
357	<	Thread.sleep(SMALL_DELAY_MS);
358	<	}
359	<	catch(Exception e) {
360	<	threadFail("unexpected exception");
361	<	}
362	<	lock.unlock();
363	<	}
261	<	});
262	<	try{
263	<	t.start();
264	<	Thread.sleep(SHORT_DELAY_MS);
265	<	assertTrue(lock.isLocked());
266	<	t.join();
267	<	assertFalse(lock.isLocked());
268	<	} catch(Exception e){
269	<	fail("unexpected exception");
270	<	}
347	>	public void testIsLocked() throws InterruptedException {
348	>	final ReentrantLock lock = new ReentrantLock();
349	>	lock.lock();
350	>	assertTrue(lock.isLocked());
351	>	lock.unlock();
352	>	assertFalse(lock.isLocked());
353	>	Thread t = newStartedThread(new CheckedRunnable() {
354	>	public void realRun() throws InterruptedException {
355	>	lock.lock();
356	>	delay(SMALL_DELAY_MS);
357	>	lock.unlock();
358	>	}});
359	>
360	>	delay(SHORT_DELAY_MS);
361	>	assertTrue(lock.isLocked());
362	>	awaitTermination(t);
363	>	assertFalse(lock.isLocked());
364		}
365
366
367		/**
368	+	* lockInterruptibly is interruptible.
369	+	*/
370	+	public void testLockInterruptibly1() throws InterruptedException {
371	+	final ReentrantLock lock = new ReentrantLock();
372	+	lock.lock();
373	+	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
374	+	delay(SHORT_DELAY_MS);
375	+	t.interrupt();
376	+	delay(SHORT_DELAY_MS);
377	+	lock.unlock();
378	+	awaitTermination(t);
379	+	}
380	+
381	+	/**
382		* lockInterruptibly succeeds when unlocked, else is interruptible
383		*/
384	<	public void testLockInterruptibly() {
385	<	final ReentrantLock lock = new ReentrantLock();
386	<	try {
387	<	lock.lockInterruptibly();
388	<	} catch(Exception e) {
389	<	fail("unexpected exception");
390	<	}
391	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
392	<	try {
286	<	t.start();
287	<	t.interrupt();
288	<	assertTrue(lock.isLocked());
289	<	assertTrue(lock.isHeldByCurrentThread());
290	<	t.join();
291	<	} catch(Exception e){
292	<	fail("unexpected exception");
293	<	}
384	>	public void testLockInterruptibly2() throws InterruptedException {
385	>	final ReentrantLock lock = new ReentrantLock();
386	>	lock.lockInterruptibly();
387	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
388	>	delay(SHORT_DELAY_MS);
389	>	t.interrupt();
390	>	assertTrue(lock.isLocked());
391	>	assertTrue(lock.isHeldByCurrentThread());
392	>	awaitTermination(t);
393		}
394
395	<	public void testAwait_IllegalMonitor() {
396	<	final ReentrantLock lock = new ReentrantLock();
395	>	/**
396	>	* Calling await without holding lock throws IllegalMonitorStateException
397	>	*/
398	>	public void testAwait_IllegalMonitor() throws InterruptedException {
399	>	final ReentrantLock lock = new ReentrantLock();
400		final Condition c = lock.newCondition();
401		try {
402		c.await();
403	<	fail("should throw");
404	<	}
303	<	catch (IllegalMonitorStateException success) {
304	<	}
305	<	catch (Exception ex) {
306	<	fail("should throw IMSE");
307	<	}
403	>	shouldThrow();
404	>	} catch (IllegalMonitorStateException success) {}
405		}
406
407	+	/**
408	+	* Calling signal without holding lock throws IllegalMonitorStateException
409	+	*/
410		public void testSignal_IllegalMonitor() {
411	<	final ReentrantLock lock = new ReentrantLock();
411	>	final ReentrantLock lock = new ReentrantLock();
412		final Condition c = lock.newCondition();
413		try {
414		c.signal();
415	<	fail("should throw");
416	<	}
417	<	catch (IllegalMonitorStateException success) {
418	<	}
419	<	catch (Exception ex) {
420	<	fail("should throw IMSE");
421	<	}
415	>	shouldThrow();
416	>	} catch (IllegalMonitorStateException success) {}
417	>	}
418	>
419	>	/**
420	>	* awaitNanos without a signal times out
421	>	*/
422	>	public void testAwaitNanos_Timeout() throws InterruptedException {
423	>	final ReentrantLock lock = new ReentrantLock();
424	>	final Condition c = lock.newCondition();
425	>	lock.lock();
426	>	long t = c.awaitNanos(100);
427	>	assertTrue(t <= 0);
428	>	lock.unlock();
429		}
430
431	<	public void testAwaitNanos_Timeout() {
432	<	final ReentrantLock lock = new ReentrantLock();
431	>	/**
432	>	* timed await without a signal times out
433	>	*/
434	>	public void testAwait_Timeout() throws InterruptedException {
435	>	final ReentrantLock lock = new ReentrantLock();
436	>	final Condition c = lock.newCondition();
437	>	lock.lock();
438	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
439	>	lock.unlock();
440	>	}
441	>
442	>	/**
443	>	* awaitUntil without a signal times out
444	>	*/
445	>	public void testAwaitUntil_Timeout() throws InterruptedException {
446	>	final ReentrantLock lock = new ReentrantLock();
447	>	final Condition c = lock.newCondition();
448	>	lock.lock();
449	>	java.util.Date d = new java.util.Date();
450	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
451	>	lock.unlock();
452	>	}
453	>
454	>	/**
455	>	* await returns when signalled
456	>	*/
457	>	public void testAwait() throws InterruptedException {
458	>	final ReentrantLock lock = new ReentrantLock();
459		final Condition c = lock.newCondition();
460	+	Thread t = newStartedThread(new CheckedRunnable() {
461	+	public void realRun() throws InterruptedException {
462	+	lock.lock();
463	+	c.await();
464	+	lock.unlock();
465	+	}});
466	+
467	+	delay(SHORT_DELAY_MS);
468	+	lock.lock();
469	+	c.signal();
470	+	lock.unlock();
471	+	awaitTermination(t);
472	+	}
473	+
474	+	/**
475	+	* hasWaiters throws NPE if null
476	+	*/
477	+	public void testHasWaitersNPE() {
478	+	final ReentrantLock lock = new ReentrantLock();
479		try {
480	<	lock.lock();
481	<	long t = c.awaitNanos(100);
482	<	assertTrue(t <= 0);
483	<	lock.unlock();
484	<	}
485	<	catch (Exception ex) {
486	<	fail("unexpected exception");
487	<	}
480	>	lock.hasWaiters(null);
481	>	shouldThrow();
482	>	} catch (NullPointerException success) {}
483	>	}
484	>
485	>	/**
486	>	* getWaitQueueLength throws NPE if null
487	>	*/
488	>	public void testGetWaitQueueLengthNPE() {
489	>	final ReentrantLock lock = new ReentrantLock();
490	>	try {
491	>	lock.getWaitQueueLength(null);
492	>	shouldThrow();
493	>	} catch (NullPointerException success) {}
494	>	}
495	>
496	>
497	>	/**
498	>	* getWaitingThreads throws NPE if null
499	>	*/
500	>	public void testGetWaitingThreadsNPE() {
501	>	final PublicReentrantLock lock = new PublicReentrantLock();
502	>	try {
503	>	lock.getWaitingThreads(null);
504	>	shouldThrow();
505	>	} catch (NullPointerException success) {}
506		}
507
508	<	public void testAwait_Timeout() {
509	<	final ReentrantLock lock = new ReentrantLock();
508	>
509	>	/**
510	>	* hasWaiters throws IAE if not owned
511	>	*/
512	>	public void testHasWaitersIAE() {
513	>	final ReentrantLock lock = new ReentrantLock();
514		final Condition c = lock.newCondition();
515	+	final ReentrantLock lock2 = new ReentrantLock();
516		try {
517	<	lock.lock();
518	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
519	<	lock.unlock();
345	<	}
346	<	catch (Exception ex) {
347	<	fail("unexpected exception");
348	<	}
517	>	lock2.hasWaiters(c);
518	>	shouldThrow();
519	>	} catch (IllegalArgumentException success) {}
520		}
521
522	<	public void testAwaitUntil_Timeout() {
523	<	final ReentrantLock lock = new ReentrantLock();
522	>	/**
523	>	* hasWaiters throws IMSE if not locked
524	>	*/
525	>	public void testHasWaitersIMSE() {
526	>	final ReentrantLock lock = new ReentrantLock();
527		final Condition c = lock.newCondition();
528		try {
529	<	lock.lock();
530	<	java.util.Date d = new java.util.Date();
531	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
358	<	lock.unlock();
359	<	}
360	<	catch (Exception ex) {
361	<	fail("unexpected exception");
362	<	}
529	>	lock.hasWaiters(c);
530	>	shouldThrow();
531	>	} catch (IllegalMonitorStateException success) {}
532		}
533
365	–	public void testAwait() {
366	–	final ReentrantLock lock = new ReentrantLock();
367	–	final ReentrantLock.ConditionObject c = lock.newCondition();
368	–	Thread t = new Thread(new Runnable() {
369	–	public void run() {
370	–	try {
371	–	lock.lock();
372	–	c.await();
373	–	lock.unlock();
374	–	}
375	–	catch(InterruptedException e) {
376	–	threadFail("unexpected exception");
377	–	}
378	–	}
379	–	});
534
535	+	/**
536	+	* getWaitQueueLength throws IAE if not owned
537	+	*/
538	+	public void testGetWaitQueueLengthIAE() {
539	+	final ReentrantLock lock = new ReentrantLock();
540	+	final Condition c = lock.newCondition();
541	+	final ReentrantLock lock2 = new ReentrantLock();
542		try {
543	<	t.start();
544	<	Thread.sleep(SHORT_DELAY_MS);
545	<	lock.lock();
546	<	c.signal();
547	<	lock.unlock();
548	<	t.join(SHORT_DELAY_MS);
549	<	assertFalse(t.isAlive());
550	<	}
551	<	catch (Exception ex) {
552	<	fail("unexpected exception");
553	<	}
543	>	lock2.getWaitQueueLength(c);
544	>	shouldThrow();
545	>	} catch (IllegalArgumentException success) {}
546	>	}
547	>
548	>	/**
549	>	* getWaitQueueLength throws IMSE if not locked
550	>	*/
551	>	public void testGetWaitQueueLengthIMSE() {
552	>	final ReentrantLock lock = new ReentrantLock();
553	>	final Condition c = lock.newCondition();
554	>	try {
555	>	lock.getWaitQueueLength(c);
556	>	shouldThrow();
557	>	} catch (IllegalMonitorStateException success) {}
558		}
559
395	–	public void testHasWaiters() {
396	–	final ReentrantLock lock = new ReentrantLock();
397	–	final ReentrantLock.ConditionObject c = lock.newCondition();
398	–	Thread t = new Thread(new Runnable() {
399	–	public void run() {
400	–	try {
401	–	lock.lock();
402	–	threadAssertFalse(c.hasWaiters());
403	–	threadAssertEquals(0, c.getWaitQueueLength());
404	–	c.await();
405	–	lock.unlock();
406	–	}
407	–	catch(InterruptedException e) {
408	–	threadFail("unexpected exception");
409	–	}
410	–	}
411	–	});
560
561	+	/**
562	+	* getWaitingThreads throws IAE if not owned
563	+	*/
564	+	public void testGetWaitingThreadsIAE() {
565	+	final PublicReentrantLock lock = new PublicReentrantLock();
566	+	final Condition c = lock.newCondition();
567	+	final PublicReentrantLock lock2 = new PublicReentrantLock();
568		try {
569	<	t.start();
570	<	Thread.sleep(SHORT_DELAY_MS);
571	<	lock.lock();
417	<	assertTrue(c.hasWaiters());
418	<	assertEquals(1, c.getWaitQueueLength());
419	<	c.signal();
420	<	lock.unlock();
421	<	Thread.sleep(SHORT_DELAY_MS);
422	<	lock.lock();
423	<	assertFalse(c.hasWaiters());
424	<	assertEquals(0, c.getWaitQueueLength());
425	<	lock.unlock();
426	<	t.join(SHORT_DELAY_MS);
427	<	assertFalse(t.isAlive());
428	<	}
429	<	catch (Exception ex) {
430	<	fail("unexpected exception");
431	<	}
569	>	lock2.getWaitingThreads(c);
570	>	shouldThrow();
571	>	} catch (IllegalArgumentException success) {}
572		}
573
574	<	public void testGetWaitQueueLength() {
575	<	final ReentrantLock lock = new ReentrantLock();
576	<	final ReentrantLock.ConditionObject c = lock.newCondition();
577	<	Thread t1 = new Thread(new Runnable() {
578	<	public void run() {
579	<	try {
580	<	lock.lock();
581	<	threadAssertFalse(c.hasWaiters());
582	<	threadAssertEquals(0, c.getWaitQueueLength());
583	<	c.await();
444	<	lock.unlock();
445	<	}
446	<	catch(InterruptedException e) {
447	<	threadFail("unexpected exception");
448	<	}
449	<	}
450	<	});
451	<
452	<	Thread t2 = new Thread(new Runnable() {
453	<	public void run() {
454	<	try {
455	<	lock.lock();
456	<	threadAssertTrue(c.hasWaiters());
457	<	threadAssertEquals(1, c.getWaitQueueLength());
458	<	c.await();
459	<	lock.unlock();
460	<	}
461	<	catch(InterruptedException e) {
462	<	threadFail("unexpected exception");
463	<	}
464	<	}
465	<	});
466	<
467	<	try {
468	<	t1.start();
469	<	Thread.sleep(SHORT_DELAY_MS);
470	<	t2.start();
471	<	Thread.sleep(SHORT_DELAY_MS);
472	<	lock.lock();
473	<	assertTrue(c.hasWaiters());
474	<	assertEquals(2, c.getWaitQueueLength());
475	<	c.signalAll();
476	<	lock.unlock();
477	<	Thread.sleep(SHORT_DELAY_MS);
478	<	lock.lock();
479	<	assertFalse(c.hasWaiters());
480	<	assertEquals(0, c.getWaitQueueLength());
481	<	lock.unlock();
482	<	t1.join(SHORT_DELAY_MS);
483	<	t2.join(SHORT_DELAY_MS);
484	<	assertFalse(t1.isAlive());
485	<	assertFalse(t2.isAlive());
486	<	}
487	<	catch (Exception ex) {
488	<	fail("unexpected exception");
489	<	}
574	>	/**
575	>	* getWaitingThreads throws IMSE if not locked
576	>	*/
577	>	public void testGetWaitingThreadsIMSE() {
578	>	final PublicReentrantLock lock = new PublicReentrantLock();
579	>	final Condition c = lock.newCondition();
580	>	try {
581	>	lock.getWaitingThreads(c);
582	>	shouldThrow();
583	>	} catch (IllegalMonitorStateException success) {}
584		}
585
492	–	public void testGetWaitingThreads() {
493	–	final MyReentrantLock lock = new MyReentrantLock();
494	–	final MyReentrantLock.MyCondition c = (MyReentrantLock.MyCondition)lock.newCondition();
495	–	Thread t1 = new Thread(new Runnable() {
496	–	public void run() {
497	–	try {
498	–	lock.lock();
499	–	threadAssertTrue(c.getWaitingThreads().isEmpty());
500	–	c.await();
501	–	lock.unlock();
502	–	}
503	–	catch(InterruptedException e) {
504	–	threadFail("unexpected exception");
505	–	}
506	–	}
507	–	});
508	–
509	–	Thread t2 = new Thread(new Runnable() {
510	–	public void run() {
511	–	try {
512	–	lock.lock();
513	–	threadAssertFalse(c.getWaitingThreads().isEmpty());
514	–	c.await();
515	–	lock.unlock();
516	–	}
517	–	catch(InterruptedException e) {
518	–	threadFail("unexpected exception");
519	–	}
520	–	}
521	–	});
586
587	<	try {
588	<	lock.lock();
589	<	assertTrue(c.getWaitingThreads().isEmpty());
590	<	lock.unlock();
591	<	t1.start();
592	<	Thread.sleep(SHORT_DELAY_MS);
593	<	t2.start();
594	<	Thread.sleep(SHORT_DELAY_MS);
595	<	lock.lock();
596	<	assertTrue(c.hasWaiters());
597	<	assertTrue(c.getWaitingThreads().contains(t1));
598	<	assertTrue(c.getWaitingThreads().contains(t2));
599	<	c.signalAll();
600	<	lock.unlock();
601	<	Thread.sleep(SHORT_DELAY_MS);
587	>	/**
588	>	* hasWaiters returns true when a thread is waiting, else false
589	>	*/
590	>	public void testHasWaiters() throws InterruptedException {
591	>	final ReentrantLock lock = new ReentrantLock();
592	>	final Condition c = lock.newCondition();
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594	>	public void realRun() throws InterruptedException {
595	>	lock.lock();
596	>	assertFalse(lock.hasWaiters(c));
597	>	assertEquals(0, lock.getWaitQueueLength(c));
598	>	c.await();
599	>	lock.unlock();
600	>	}});
601	>
602	>	delay(SHORT_DELAY_MS);
603	>	lock.lock();
604	>	assertTrue(lock.hasWaiters(c));
605	>	assertEquals(1, lock.getWaitQueueLength(c));
606	>	c.signal();
607	>	lock.unlock();
608	>	delay(SHORT_DELAY_MS);
609	>	lock.lock();
610	>	assertFalse(lock.hasWaiters(c));
611	>	assertEquals(0, lock.getWaitQueueLength(c));
612	>	lock.unlock();
613	>	awaitTermination(t);
614	>	}
615	>
616	>	/**
617	>	* getWaitQueueLength returns number of waiting threads
618	>	*/
619	>	public void testGetWaitQueueLength() throws InterruptedException {
620	>	final ReentrantLock lock = new ReentrantLock();
621	>	final Condition c = lock.newCondition();
622	>	Thread t1 = newStartedThread(new CheckedRunnable() {
623	>	public void realRun() throws InterruptedException {
624	>	lock.lock();
625	>	assertFalse(lock.hasWaiters(c));
626	>	assertEquals(0, lock.getWaitQueueLength(c));
627	>	c.await();
628	>	lock.unlock();
629	>	}});
630	>
631	>	delay(SHORT_DELAY_MS);
632	>
633	>	Thread t2 = newStartedThread(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	lock.lock();
636	>	assertTrue(lock.hasWaiters(c));
637	>	assertEquals(1, lock.getWaitQueueLength(c));
638	>	c.await();
639	>	lock.unlock();
640	>	}});
641	>
642	>	delay(SHORT_DELAY_MS);
643	>	lock.lock();
644	>	assertTrue(lock.hasWaiters(c));
645	>	assertEquals(2, lock.getWaitQueueLength(c));
646	>	c.signalAll();
647	>	lock.unlock();
648	>	delay(SHORT_DELAY_MS);
649	>	lock.lock();
650	>	assertFalse(lock.hasWaiters(c));
651	>	assertEquals(0, lock.getWaitQueueLength(c));
652	>	lock.unlock();
653	>	awaitTermination(t1);
654	>	awaitTermination(t2);
655	>	}
656	>
657	>	/**
658	>	* getWaitingThreads returns only and all waiting threads
659	>	*/
660	>	public void testGetWaitingThreads() throws InterruptedException {
661	>	final PublicReentrantLock lock = new PublicReentrantLock();
662	>	final Condition c = lock.newCondition();
663	>	Thread t1 = new Thread(new CheckedRunnable() {
664	>	public void realRun() throws InterruptedException {
665	>	lock.lock();
666	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
667	>	c.await();
668	>	lock.unlock();
669	>	}});
670	>
671	>	Thread t2 = new Thread(new CheckedRunnable() {
672	>	public void realRun() throws InterruptedException {
673	>	lock.lock();
674	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
675	>	c.await();
676	>	lock.unlock();
677	>	}});
678	>
679	>	lock.lock();
680	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
681	>	lock.unlock();
682	>	t1.start();
683	>	delay(SHORT_DELAY_MS);
684	>	t2.start();
685	>	delay(SHORT_DELAY_MS);
686	>	lock.lock();
687	>	assertTrue(lock.hasWaiters(c));
688	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
689	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
690	>	c.signalAll();
691	>	lock.unlock();
692	>	delay(SHORT_DELAY_MS);
693	>	lock.lock();
694	>	assertFalse(lock.hasWaiters(c));
695	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
696	>	lock.unlock();
697	>	awaitTermination(t1);
698	>	awaitTermination(t2);
699	>	}
700	>
701	>	/** A helper class for uninterruptible wait tests */
702	>	class UninterruptibleThread extends Thread {
703	>	private ReentrantLock lock;
704	>	private Condition c;
705	>
706	>	public volatile boolean canAwake = false;
707	>	public volatile boolean interrupted = false;
708	>	public volatile boolean lockStarted = false;
709	>
710	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
711	>	this.lock = lock;
712	>	this.c = c;
713	>	}
714	>
715	>	public synchronized void run() {
716		lock.lock();
717	<	assertFalse(c.hasWaiters());
718	<	assertTrue(c.getWaitingThreads().isEmpty());
717	>	lockStarted = true;
718	>
719	>	while (!canAwake) {
720	>	c.awaitUninterruptibly();
721	>	}
722	>
723	>	interrupted = isInterrupted();
724		lock.unlock();
542	–	t1.join(SHORT_DELAY_MS);
543	–	t2.join(SHORT_DELAY_MS);
544	–	assertFalse(t1.isAlive());
545	–	assertFalse(t2.isAlive());
546	–	}
547	–	catch (Exception ex) {
548	–	fail("unexpected exception");
725		}
726		}
727
728	<	public void testAwaitUninterruptibly() {
729	<	final ReentrantLock lock = new ReentrantLock();
728	>	/**
729	>	* awaitUninterruptibly doesn't abort on interrupt
730	>	*/
731	>	public void testAwaitUninterruptibly() throws InterruptedException {
732	>	final ReentrantLock lock = new ReentrantLock();
733		final Condition c = lock.newCondition();
734	<	Thread t = new Thread(new Runnable() {
735	<	public void run() {
736	<	lock.lock();
737	<	c.awaitUninterruptibly();
738	<	lock.unlock();
739	<	}
740	<	});
734	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
735	>
736	>	thread.start();
737	>
738	>	while (!thread.lockStarted) {
739	>	delay(100);
740	>	}
741
742	+	lock.lock();
743		try {
744	<	t.start();
745	<	Thread.sleep(SHORT_DELAY_MS);
566	<	t.interrupt();
567	<	lock.lock();
744	>	thread.interrupt();
745	>	thread.canAwake = true;
746		c.signal();
747	+	} finally {
748		lock.unlock();
570	–	t.join(SHORT_DELAY_MS);
571	–	assertFalse(t.isAlive());
572	–	}
573	–	catch (Exception ex) {
574	–	fail("unexpected exception");
749		}
750	+
751	+	thread.join();
752	+	assertTrue(thread.interrupted);
753	+	assertFalse(thread.isAlive());
754		}
755
756	<	public void testAwait_Interrupt() {
757	<	final ReentrantLock lock = new ReentrantLock();
756	>	/**
757	>	* await is interruptible
758	>	*/
759	>	public void testAwait_Interrupt() throws InterruptedException {
760	>	final PublicReentrantLock lock = new PublicReentrantLock();
761		final Condition c = lock.newCondition();
762	<	Thread t = new Thread(new Runnable() {
763	<	public void run() {
764	<	try {
765	<	lock.lock();
766	<	c.await();
767	<	lock.unlock();
768	<	threadFail("should throw");
769	<	}
770	<	catch(InterruptedException success) {
771	<	}
772	<	}
773	<	});
774	<
775	<	try {
776	<	t.start();
777	<	Thread.sleep(SHORT_DELAY_MS);
778	<	t.interrupt();
779	<	t.join(SHORT_DELAY_MS);
780	<	assertFalse(t.isAlive());
781	<	}
782	<	catch (Exception ex) {
783	<	fail("unexpected exception");
784	<	}
762	>	final CountDownLatch locked = new CountDownLatch(1);
763	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
764	>	public void realRun() throws InterruptedException {
765	>	lock.lock();
766	>	assertTrue(lock.isLocked());
767	>	assertTrue(lock.isHeldByCurrentThread());
768	>	assertHasNoWaiters(lock, c);
769	>	locked.countDown();
770	>	try {
771	>	c.await();
772	>	} finally {
773	>	assertTrue(lock.isLocked());
774	>	assertTrue(lock.isHeldByCurrentThread());
775	>	assertHasNoWaiters(lock, c);
776	>	lock.unlock();
777	>	assertFalse(Thread.interrupted());
778	>	}
779	>	}});
780	>
781	>	locked.await();
782	>	assertHasWaiters(lock, c, t);
783	>	t.interrupt();
784	>	awaitTermination(t);
785	>	assertFalse(lock.isLocked());
786		}
787
788	<	public void testAwaitNanos_Interrupt() {
789	<	final ReentrantLock lock = new ReentrantLock();
788	>	/**
789	>	* awaitNanos is interruptible
790	>	*/
791	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
792	>	final ReentrantLock lock = new ReentrantLock();
793		final Condition c = lock.newCondition();
794	<	Thread t = new Thread(new Runnable() {
795	<	public void run() {
796	<	try {
797	<	lock.lock();
798	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
799	<	lock.unlock();
800	<	threadFail("should throw");
801	<	}
802	<	catch(InterruptedException success) {
618	<	}
619	<	}
620	<	});
621	<
622	<	try {
623	<	t.start();
624	<	Thread.sleep(SHORT_DELAY_MS);
625	<	t.interrupt();
626	<	t.join(SHORT_DELAY_MS);
627	<	assertFalse(t.isAlive());
628	<	}
629	<	catch (Exception ex) {
630	<	fail("unexpected exception");
631	<	}
794	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
795	>	public void realRun() throws InterruptedException {
796	>	lock.lock();
797	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
798	>	}});
799	>
800	>	delay(SHORT_DELAY_MS);
801	>	t.interrupt();
802	>	awaitTermination(t);
803		}
804
805	<	public void testAwaitUntil_Interrupt() {
806	<	final ReentrantLock lock = new ReentrantLock();
805	>	/**
806	>	* awaitUntil is interruptible
807	>	*/
808	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
809	>	final ReentrantLock lock = new ReentrantLock();
810		final Condition c = lock.newCondition();
811	<	Thread t = new Thread(new Runnable() {
812	<	public void run() {
813	<	try {
814	<	lock.lock();
815	<	java.util.Date d = new java.util.Date();
816	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
817	<	lock.unlock();
818	<	threadFail("should throw");
819	<	}
820	<	catch(InterruptedException success) {
647	<	}
648	<	}
649	<	});
650	<
651	<	try {
652	<	t.start();
653	<	Thread.sleep(SHORT_DELAY_MS);
654	<	t.interrupt();
655	<	t.join(SHORT_DELAY_MS);
656	<	assertFalse(t.isAlive());
657	<	}
658	<	catch (Exception ex) {
659	<	fail("unexpected exception");
660	<	}
811	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
812	>	public void realRun() throws InterruptedException {
813	>	lock.lock();
814	>	java.util.Date d = new java.util.Date();
815	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
816	>	}});
817	>
818	>	delay(SHORT_DELAY_MS);
819	>	t.interrupt();
820	>	awaitTermination(t);
821		}
822
823	<	public void testSignalAll() {
824	<	final ReentrantLock lock = new ReentrantLock();
823	>	/**
824	>	* signalAll wakes up all threads
825	>	*/
826	>	public void testSignalAll() throws InterruptedException {
827	>	final ReentrantLock lock = new ReentrantLock();
828		final Condition c = lock.newCondition();
829	<	Thread t1 = new Thread(new Runnable() {
830	<	public void run() {
831	<	try {
832	<	lock.lock();
833	<	c.await();
834	<	lock.unlock();
835	<	}
836	<	catch(InterruptedException e) {
837	<	threadFail("unexpected exception");
838	<	}
839	<	}
840	<	});
841	<
842	<	Thread t2 = new Thread(new Runnable() {
843	<	public void run() {
844	<	try {
845	<	lock.lock();
846	<	c.await();
847	<	lock.unlock();
848	<	}
849	<	catch(InterruptedException e) {
850	<	threadFail("unexpected exception");
851	<	}
852	<	}
853	<	});
854	<
855	<	try {
856	<	t1.start();
857	<	t2.start();
858	<	Thread.sleep(SHORT_DELAY_MS);
859	<	lock.lock();
860	<	c.signalAll();
861	<	lock.unlock();
862	<	t1.join(SHORT_DELAY_MS);
863	<	t2.join(SHORT_DELAY_MS);
864	<	assertFalse(t1.isAlive());
865	<	assertFalse(t2.isAlive());
866	<	}
867	<	catch (Exception ex) {
868	<	fail("unexpected exception");
869	<	}
829	>	Thread t1 = newStartedThread(new CheckedRunnable() {
830	>	public void realRun() throws InterruptedException {
831	>	lock.lock();
832	>	c.await();
833	>	lock.unlock();
834	>	}});
835	>
836	>	Thread t2 = newStartedThread(new CheckedRunnable() {
837	>	public void realRun() throws InterruptedException {
838	>	lock.lock();
839	>	c.await();
840	>	lock.unlock();
841	>	}});
842	>
843	>	delay(SHORT_DELAY_MS);
844	>	lock.lock();
845	>	c.signalAll();
846	>	lock.unlock();
847	>	awaitTermination(t1);
848	>	awaitTermination(t2);
849	>	}
850	>
851	>	/**
852	>	* await after multiple reentrant locking preserves lock count
853	>	*/
854	>	public void testAwaitLockCount() throws InterruptedException {
855	>	final ReentrantLock lock = new ReentrantLock();
856	>	final Condition c = lock.newCondition();
857	>	Thread t1 = newStartedThread(new CheckedRunnable() {
858	>	public void realRun() throws InterruptedException {
859	>	lock.lock();
860	>	assertEquals(1, lock.getHoldCount());
861	>	c.await();
862	>	assertEquals(1, lock.getHoldCount());
863	>	lock.unlock();
864	>	}});
865	>
866	>	Thread t2 = newStartedThread(new CheckedRunnable() {
867	>	public void realRun() throws InterruptedException {
868	>	lock.lock();
869	>	lock.lock();
870	>	assertEquals(2, lock.getHoldCount());
871	>	c.await();
872	>	assertEquals(2, lock.getHoldCount());
873	>	lock.unlock();
874	>	lock.unlock();
875	>	}});
876	>
877	>	delay(SHORT_DELAY_MS);
878	>	lock.lock();
879	>	c.signalAll();
880	>	lock.unlock();
881	>	awaitTermination(t1);
882	>	awaitTermination(t2);
883		}
884
885	<	public void testSerialization() {
885	>	/**
886	>	* A serialized lock deserializes as unlocked
887	>	*/
888	>	public void testSerialization() throws Exception {
889		ReentrantLock l = new ReentrantLock();
890		l.lock();
891		l.unlock();
892
893	<	try {
894	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
895	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
896	<	out.writeObject(l);
897	<	out.close();
898	<
899	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
900	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
901	<	ReentrantLock r = (ReentrantLock) in.readObject();
902	<	r.lock();
903	<	r.unlock();
904	<	} catch(Exception e){
905	<	e.printStackTrace();
906	<	fail("unexpected exception");
907	<	}
893	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
894	>	ObjectOutputStream out =
895	>	new ObjectOutputStream(new BufferedOutputStream(bout));
896	>	out.writeObject(l);
897	>	out.close();
898	>
899	>	ByteArrayInputStream bin =
900	>	new ByteArrayInputStream(bout.toByteArray());
901	>	ObjectInputStream in =
902	>	new ObjectInputStream(new BufferedInputStream(bin));
903	>	ReentrantLock r = (ReentrantLock) in.readObject();
904	>	r.lock();
905	>	r.unlock();
906	>	}
907	>
908	>	/**
909	>	* toString indicates current lock state
910	>	*/
911	>	public void testToString() {
912	>	ReentrantLock lock = new ReentrantLock();
913	>	String us = lock.toString();
914	>	assertTrue(us.indexOf("Unlocked") >= 0);
915	>	lock.lock();
916	>	String ls = lock.toString();
917	>	assertTrue(ls.indexOf("Locked") >= 0);
918		}
919
920		}

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