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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 1.39 by jsr166, Tue Mar 15 19:47:07 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	>	* Constructor sets given fairness
63	>	*/
64	>	public void testConstructor() {
65	>	assertFalse(new ReentrantLock().isFair());
66	>	assertFalse(new ReentrantLock(false).isFair());
67	>	assertTrue(new ReentrantLock(true).isFair());
68	>	}
69
70	+	/**
71	+	* locking an unlocked lock succeeds
72	+	*/
73	+	public void testLock() {
74	+	ReentrantLock rl = new ReentrantLock();
75	+	rl.lock();
76	+	assertTrue(rl.isLocked());
77	+	rl.unlock();
78	+	assertFalse(rl.isLocked());
79		}
80
81	<	/*
81	>	/**
82	>	* locking an unlocked fair lock succeeds
83	>	*/
84	>	public void testFairLock() {
85	>	ReentrantLock rl = new ReentrantLock(true);
86	>	rl.lock();
87	>	assertTrue(rl.isLocked());
88	>	rl.unlock();
89	>	}
90	>
91	>	/**
92		* Unlocking an unlocked lock throws IllegalMonitorStateException
93		*/
94	<	public void testIllegalMonitorStateException(){
95	<	ReentrantLock rl = new ReentrantLock();
96	<	try{
97	<	rl.unlock();
98	<	fail("Should of thown Illegal Monitor State Exception");
94	>	public void testUnlock_IllegalMonitorStateException() {
95	>	ReentrantLock rl = new ReentrantLock();
96	>	try {
97	>	rl.unlock();
98	>	shouldThrow();
99	>	} catch (IllegalMonitorStateException success) {}
100	>	}
101
102	<	} catch(IllegalMonitorStateException success){}
102	>	/**
103	>	* tryLock on an unlocked lock succeeds
104	>	*/
105	>	public void testTryLock() {
106	>	ReentrantLock rl = new ReentrantLock();
107	>	assertTrue(rl.tryLock());
108	>	assertTrue(rl.isLocked());
109	>	rl.unlock();
110		}
111
112	<	/*
113	<	* lockInterruptibly is interruptible.
112	>
113	>	/**
114	>	* hasQueuedThreads reports whether there are waiting threads
115		*/
116	<	public void testInterruptedException(){
117	<	final ReentrantLock lock = new ReentrantLock();
118	<	lock.lock();
119	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
120	<	try {
121	<	t.start();
122	<	t.interrupt();
123	<	lock.unlock();
124	<	t.join();
125	<	} catch(Exception e){
126	<	fail("unexpected exception");
127	<	}
128	<	}
116	>	public void testhasQueuedThreads() throws InterruptedException {
117	>	final ReentrantLock lock = new ReentrantLock();
118	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
119	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
120	>	assertFalse(lock.hasQueuedThreads());
121	>	lock.lock();
122	>	t1.start();
123	>	Thread.sleep(SHORT_DELAY_MS);
124	>	assertTrue(lock.hasQueuedThreads());
125	>	t2.start();
126	>	Thread.sleep(SHORT_DELAY_MS);
127	>	assertTrue(lock.hasQueuedThreads());
128	>	t1.interrupt();
129	>	Thread.sleep(SHORT_DELAY_MS);
130	>	assertTrue(lock.hasQueuedThreads());
131	>	lock.unlock();
132	>	Thread.sleep(SHORT_DELAY_MS);
133	>	assertFalse(lock.hasQueuedThreads());
134	>	t1.join();
135	>	t2.join();
136	>	}
137
138	<	/*
139	<	* getLockQueueLength reports number of waiting threads
138	>	/**
139	>	* getQueueLength reports number of waiting threads
140		*/
141	<	public void testgetLockQueueLength(){
142	<	final ReentrantLock lock = new ReentrantLock();
141	>	public void testGetQueueLength() throws InterruptedException {
142	>	final ReentrantLock lock = new ReentrantLock();
143		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
144		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
145	+	assertEquals(0, lock.getQueueLength());
146	+	lock.lock();
147	+	t1.start();
148	+	Thread.sleep(SHORT_DELAY_MS);
149	+	assertEquals(1, lock.getQueueLength());
150	+	t2.start();
151	+	Thread.sleep(SHORT_DELAY_MS);
152	+	assertEquals(2, lock.getQueueLength());
153	+	t1.interrupt();
154	+	Thread.sleep(SHORT_DELAY_MS);
155	+	assertEquals(1, lock.getQueueLength());
156	+	lock.unlock();
157	+	Thread.sleep(SHORT_DELAY_MS);
158	+	assertEquals(0, lock.getQueueLength());
159	+	t1.join();
160	+	t2.join();
161	+	}
162	+
163	+	/**
164	+	* getQueueLength reports number of waiting threads
165	+	*/
166	+	public void testGetQueueLength_fair() throws InterruptedException {
167	+	final ReentrantLock lock = new ReentrantLock(true);
168	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
169	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
170	+	assertEquals(0, lock.getQueueLength());
171	+	lock.lock();
172	+	t1.start();
173	+	Thread.sleep(SHORT_DELAY_MS);
174	+	assertEquals(1, lock.getQueueLength());
175	+	t2.start();
176	+	Thread.sleep(SHORT_DELAY_MS);
177	+	assertEquals(2, lock.getQueueLength());
178	+	t1.interrupt();
179	+	Thread.sleep(SHORT_DELAY_MS);
180	+	assertEquals(1, lock.getQueueLength());
181	+	lock.unlock();
182	+	Thread.sleep(SHORT_DELAY_MS);
183	+	assertEquals(0, lock.getQueueLength());
184	+	t1.join();
185	+	t2.join();
186	+	}
187	+
188	+	/**
189	+	* hasQueuedThread(null) throws NPE
190	+	*/
191	+	public void testHasQueuedThreadNPE() {
192	+	final ReentrantLock sync = new ReentrantLock();
193		try {
194	<	assertEquals(0, lock.getLockQueueLength());
195	<	lock.lock();
196	<	t1.start();
197	<	Thread.sleep(SHORT_DELAY_MS);
198	<	assertEquals(1, lock.getLockQueueLength());
199	<	t2.start();
200	<	Thread.sleep(SHORT_DELAY_MS);
201	<	assertEquals(2, lock.getLockQueueLength());
202	<	t1.interrupt();
203	<	Thread.sleep(SHORT_DELAY_MS);
204	<	assertEquals(1, lock.getLockQueueLength());
205	<	lock.unlock();
206	<	Thread.sleep(SHORT_DELAY_MS);
207	<	assertEquals(0, lock.getLockQueueLength());
208	<	t1.join();
209	<	t2.join();
210	<	} catch(Exception e){
211	<	fail("unexpected exception");
212	<	}
213	<	}
194	>	sync.hasQueuedThread(null);
195	>	shouldThrow();
196	>	} catch (NullPointerException success) {}
197	>	}
198	>
199	>	/**
200	>	* hasQueuedThread reports whether a thread is queued.
201	>	*/
202	>	public void testHasQueuedThread() throws InterruptedException {
203	>	final ReentrantLock sync = new ReentrantLock();
204	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
205	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
206	>	assertFalse(sync.hasQueuedThread(t1));
207	>	assertFalse(sync.hasQueuedThread(t2));
208	>	sync.lock();
209	>	t1.start();
210	>	Thread.sleep(SHORT_DELAY_MS);
211	>	assertTrue(sync.hasQueuedThread(t1));
212	>	t2.start();
213	>	Thread.sleep(SHORT_DELAY_MS);
214	>	assertTrue(sync.hasQueuedThread(t1));
215	>	assertTrue(sync.hasQueuedThread(t2));
216	>	t1.interrupt();
217	>	Thread.sleep(SHORT_DELAY_MS);
218	>	assertFalse(sync.hasQueuedThread(t1));
219	>	assertTrue(sync.hasQueuedThread(t2));
220	>	sync.unlock();
221	>	Thread.sleep(SHORT_DELAY_MS);
222	>	assertFalse(sync.hasQueuedThread(t1));
223	>	Thread.sleep(SHORT_DELAY_MS);
224	>	assertFalse(sync.hasQueuedThread(t2));
225	>	t1.join();
226	>	t2.join();
227	>	}
228	>
229
230	<	/*
230	>	/**
231		* getQueuedThreads includes waiting threads
232		*/
233	<	public void testGetQueuedThreads(){
234	<	final MyReentrantLock lock = new MyReentrantLock();
233	>	public void testGetQueuedThreads() throws InterruptedException {
234	>	final PublicReentrantLock lock = new PublicReentrantLock();
235		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
236		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
237	<	try {
238	<	assertTrue(lock.getQueuedThreads().isEmpty());
239	<	lock.lock();
240	<	assertTrue(lock.getQueuedThreads().isEmpty());
241	<	t1.start();
242	<	Thread.sleep(SHORT_DELAY_MS);
243	<	assertTrue(lock.getQueuedThreads().contains(t1));
244	<	t2.start();
245	<	Thread.sleep(SHORT_DELAY_MS);
246	<	assertTrue(lock.getQueuedThreads().contains(t1));
247	<	assertTrue(lock.getQueuedThreads().contains(t2));
248	<	t1.interrupt();
249	<	Thread.sleep(SHORT_DELAY_MS);
250	<	assertFalse(lock.getQueuedThreads().contains(t1));
251	<	assertTrue(lock.getQueuedThreads().contains(t2));
252	<	lock.unlock();
253	<	Thread.sleep(SHORT_DELAY_MS);
254	<	assertTrue(lock.getQueuedThreads().isEmpty());
255	<	t1.join();
256	<	t2.join();
152	<	} catch(Exception e){
153	<	fail("unexpected exception");
154	<	}
155	<	}
237	>	assertTrue(lock.getQueuedThreads().isEmpty());
238	>	lock.lock();
239	>	assertTrue(lock.getQueuedThreads().isEmpty());
240	>	t1.start();
241	>	Thread.sleep(SHORT_DELAY_MS);
242	>	assertTrue(lock.getQueuedThreads().contains(t1));
243	>	t2.start();
244	>	Thread.sleep(SHORT_DELAY_MS);
245	>	assertTrue(lock.getQueuedThreads().contains(t1));
246	>	assertTrue(lock.getQueuedThreads().contains(t2));
247	>	t1.interrupt();
248	>	Thread.sleep(SHORT_DELAY_MS);
249	>	assertFalse(lock.getQueuedThreads().contains(t1));
250	>	assertTrue(lock.getQueuedThreads().contains(t2));
251	>	lock.unlock();
252	>	Thread.sleep(SHORT_DELAY_MS);
253	>	assertTrue(lock.getQueuedThreads().isEmpty());
254	>	t1.join();
255	>	t2.join();
256	>	}
257
258
259	<	/*
260	<	* timed trylock is interruptible.
259	>	/**
260	>	* timed tryLock is interruptible.
261		*/
262	<	public void testInterruptedException2(){
263	<	final ReentrantLock lock = new ReentrantLock();
264	<	lock.lock();
265	<	Thread t = new Thread(new Runnable() {
266	<	public void run(){
267	<	try{
268	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
269	<	threadFail("should throw");
270	<	} catch(InterruptedException success){}
271	<	}
272	<	});
273	<	try {
173	<	t.start();
174	<	t.interrupt();
175	<	} catch(Exception e){
176	<	fail("unexpected exception");
177	<	}
262	>	public void testInterruptedException2() throws InterruptedException {
263	>	final ReentrantLock lock = new ReentrantLock();
264	>	lock.lock();
265	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
266	>	public void realRun() throws InterruptedException {
267	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
268	>	}});
269	>
270	>	t.start();
271	>	Thread.sleep(SHORT_DELAY_MS);
272	>	t.interrupt();
273	>	t.join();
274		}
275
276
277		/**
278	<	* Trylock on a locked lock fails
278	>	* TryLock on a locked lock fails
279		*/
280	<	public void testTryLockWhenLocked() {
281	<	final ReentrantLock lock = new ReentrantLock();
282	<	lock.lock();
283	<	Thread t = new Thread(new Runnable() {
284	<	public void run(){
285	<	threadAssertFalse(lock.tryLock());
286	<	}
287	<	});
288	<	try {
289	<	t.start();
290	<	t.join();
291	<	lock.unlock();
196	<	} catch(Exception e){
197	<	fail("unexpected exception");
198	<	}
199	<	}
280	>	public void testTryLockWhenLocked() throws InterruptedException {
281	>	final ReentrantLock lock = new ReentrantLock();
282	>	lock.lock();
283	>	Thread t = new Thread(new CheckedRunnable() {
284	>	public void realRun() {
285	>	assertFalse(lock.tryLock());
286	>	}});
287	>
288	>	t.start();
289	>	t.join();
290	>	lock.unlock();
291	>	}
292
293		/**
294	<	* Timed Trylock on a locked lock times out
294	>	* Timed tryLock on a locked lock times out
295		*/
296	<	public void testTryLock_Timeout(){
297	<	final ReentrantLock lock = new ReentrantLock();
298	<	lock.lock();
299	<	Thread t = new Thread(new Runnable() {
300	<	public void run(){
301	<	try {
302	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
303	<	} catch (Exception ex) {
304	<	threadFail("unexpected exception");
305	<	}
306	<	}
307	<	});
308	<	try {
217	<	t.start();
218	<	t.join();
219	<	lock.unlock();
220	<	} catch(Exception e){
221	<	fail("unexpected exception");
222	<	}
223	<	}
224	<
296	>	public void testTryLock_Timeout() throws InterruptedException {
297	>	final ReentrantLock lock = new ReentrantLock();
298	>	lock.lock();
299	>	Thread t = new Thread(new CheckedRunnable() {
300	>	public void realRun() throws InterruptedException {
301	>	assertFalse(lock.tryLock(1, MILLISECONDS));
302	>	}});
303	>
304	>	t.start();
305	>	t.join();
306	>	lock.unlock();
307	>	}
308	>
309		/**
310		* getHoldCount returns number of recursive holds
311		*/
312		public void testGetHoldCount() {
313	<	ReentrantLock lock = new ReentrantLock();
314	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
315	<	lock.lock();
316	<	assertEquals(i,lock.getHoldCount());
317	<	}
318	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
319	<	lock.unlock();
320	<	assertEquals(i-1,lock.getHoldCount());
321	<	}
313	>	ReentrantLock lock = new ReentrantLock();
314	>	for (int i = 1; i <= SIZE; i++) {
315	>	lock.lock();
316	>	assertEquals(i, lock.getHoldCount());
317	>	}
318	>	for (int i = SIZE; i > 0; i--) {
319	>	lock.unlock();
320	>	assertEquals(i-1, lock.getHoldCount());
321	>	}
322		}
323	<
324	<
323	>
324	>
325		/**
326		* isLocked is true when locked and false when not
327		*/
328	<	public void testIsLocked() {
329	<	final ReentrantLock lock = new ReentrantLock();
330	<	lock.lock();
331	<	assertTrue(lock.isLocked());
332	<	lock.unlock();
333	<	assertFalse(lock.isLocked());
334	<	Thread t = new Thread(new Runnable() {
335	<	public void run() {
336	<	lock.lock();
337	<	try {
338	<	Thread.sleep(SMALL_DELAY_MS);
339	<	}
340	<	catch(Exception e) {
341	<	threadFail("unexpected exception");
342	<	}
343	<	lock.unlock();
344	<	}
345	<	});
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	<	}
328	>	public void testIsLocked() throws InterruptedException {
329	>	final ReentrantLock lock = new ReentrantLock();
330	>	lock.lock();
331	>	assertTrue(lock.isLocked());
332	>	lock.unlock();
333	>	assertFalse(lock.isLocked());
334	>	Thread t = new Thread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	lock.lock();
337	>	Thread.sleep(SMALL_DELAY_MS);
338	>	lock.unlock();
339	>	}});
340	>
341	>	t.start();
342	>	Thread.sleep(SHORT_DELAY_MS);
343	>	assertTrue(lock.isLocked());
344	>	t.join();
345	>	assertFalse(lock.isLocked());
346		}
347
348
349		/**
350	+	* lockInterruptibly is interruptible.
351	+	*/
352	+	public void testLockInterruptibly1() throws InterruptedException {
353	+	final ReentrantLock lock = new ReentrantLock();
354	+	lock.lock();
355	+	Thread t = new Thread(new InterruptedLockRunnable(lock));
356	+	t.start();
357	+	Thread.sleep(SHORT_DELAY_MS);
358	+	t.interrupt();
359	+	Thread.sleep(SHORT_DELAY_MS);
360	+	lock.unlock();
361	+	t.join();
362	+	}
363	+
364	+	/**
365		* lockInterruptibly succeeds when unlocked, else is interruptible
366		*/
367	<	public void testLockInterruptibly() {
368	<	final ReentrantLock lock = new ReentrantLock();
369	<	try {
370	<	lock.lockInterruptibly();
371	<	} catch(Exception e) {
372	<	fail("unexpected exception");
373	<	}
374	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
375	<	try {
376	<	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	<	}
367	>	public void testLockInterruptibly2() throws InterruptedException {
368	>	final ReentrantLock lock = new ReentrantLock();
369	>	lock.lockInterruptibly();
370	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
371	>	t.start();
372	>	Thread.sleep(SHORT_DELAY_MS);
373	>	t.interrupt();
374	>	assertTrue(lock.isLocked());
375	>	assertTrue(lock.isHeldByCurrentThread());
376	>	t.join();
377		}
378
379	<	public void testAwait_IllegalMonitor() {
380	<	final ReentrantLock lock = new ReentrantLock();
379	>	/**
380	>	* Calling await without holding lock throws IllegalMonitorStateException
381	>	*/
382	>	public void testAwait_IllegalMonitor() throws InterruptedException {
383	>	final ReentrantLock lock = new ReentrantLock();
384		final Condition c = lock.newCondition();
385		try {
386		c.await();
387	<	fail("should throw");
388	<	}
303	<	catch (IllegalMonitorStateException success) {
304	<	}
305	<	catch (Exception ex) {
306	<	fail("should throw IMSE");
307	<	}
387	>	shouldThrow();
388	>	} catch (IllegalMonitorStateException success) {}
389		}
390
391	+	/**
392	+	* Calling signal without holding lock throws IllegalMonitorStateException
393	+	*/
394		public void testSignal_IllegalMonitor() {
395	<	final ReentrantLock lock = new ReentrantLock();
395	>	final ReentrantLock lock = new ReentrantLock();
396		final Condition c = lock.newCondition();
397		try {
398		c.signal();
399	<	fail("should throw");
400	<	}
401	<	catch (IllegalMonitorStateException success) {
402	<	}
403	<	catch (Exception ex) {
404	<	fail("should throw IMSE");
405	<	}
399	>	shouldThrow();
400	>	} catch (IllegalMonitorStateException success) {}
401	>	}
402	>
403	>	/**
404	>	* awaitNanos without a signal times out
405	>	*/
406	>	public void testAwaitNanos_Timeout() throws InterruptedException {
407	>	final ReentrantLock lock = new ReentrantLock();
408	>	final Condition c = lock.newCondition();
409	>	lock.lock();
410	>	long t = c.awaitNanos(100);
411	>	assertTrue(t <= 0);
412	>	lock.unlock();
413	>	}
414	>
415	>	/**
416	>	* timed await without a signal times out
417	>	*/
418	>	public void testAwait_Timeout() throws InterruptedException {
419	>	final ReentrantLock lock = new ReentrantLock();
420	>	final Condition c = lock.newCondition();
421	>	lock.lock();
422	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
423	>	lock.unlock();
424		}
425
426	<	public void testAwaitNanos_Timeout() {
427	<	final ReentrantLock lock = new ReentrantLock();
426	>	/**
427	>	* awaitUntil without a signal times out
428	>	*/
429	>	public void testAwaitUntil_Timeout() throws InterruptedException {
430	>	final ReentrantLock lock = new ReentrantLock();
431	>	final Condition c = lock.newCondition();
432	>	lock.lock();
433	>	java.util.Date d = new java.util.Date();
434	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
435	>	lock.unlock();
436	>	}
437	>
438	>	/**
439	>	* await returns when signalled
440	>	*/
441	>	public void testAwait() throws InterruptedException {
442	>	final ReentrantLock lock = new ReentrantLock();
443		final Condition c = lock.newCondition();
444	+	Thread t = new Thread(new CheckedRunnable() {
445	+	public void realRun() throws InterruptedException {
446	+	lock.lock();
447	+	c.await();
448	+	lock.unlock();
449	+	}});
450	+
451	+	t.start();
452	+	Thread.sleep(SHORT_DELAY_MS);
453	+	lock.lock();
454	+	c.signal();
455	+	lock.unlock();
456	+	t.join(SHORT_DELAY_MS);
457	+	assertFalse(t.isAlive());
458	+	}
459	+
460	+	/**
461	+	* hasWaiters throws NPE if null
462	+	*/
463	+	public void testHasWaitersNPE() {
464	+	final ReentrantLock lock = new ReentrantLock();
465		try {
466	<	lock.lock();
467	<	long t = c.awaitNanos(100);
468	<	assertTrue(t <= 0);
331	<	lock.unlock();
332	<	}
333	<	catch (Exception ex) {
334	<	fail("unexpected exception");
335	<	}
466	>	lock.hasWaiters(null);
467	>	shouldThrow();
468	>	} catch (NullPointerException success) {}
469		}
470
471	<	public void testAwait_Timeout() {
472	<	final ReentrantLock lock = new ReentrantLock();
471	>	/**
472	>	* getWaitQueueLength throws NPE if null
473	>	*/
474	>	public void testGetWaitQueueLengthNPE() {
475	>	final ReentrantLock lock = new ReentrantLock();
476	>	try {
477	>	lock.getWaitQueueLength(null);
478	>	shouldThrow();
479	>	} catch (NullPointerException success) {}
480	>	}
481	>
482	>
483	>	/**
484	>	* getWaitingThreads throws NPE if null
485	>	*/
486	>	public void testGetWaitingThreadsNPE() {
487	>	final PublicReentrantLock lock = new PublicReentrantLock();
488	>	try {
489	>	lock.getWaitingThreads(null);
490	>	shouldThrow();
491	>	} catch (NullPointerException success) {}
492	>	}
493	>
494	>
495	>	/**
496	>	* hasWaiters throws IAE if not owned
497	>	*/
498	>	public void testHasWaitersIAE() {
499	>	final ReentrantLock lock = new ReentrantLock();
500		final Condition c = lock.newCondition();
501	+	final ReentrantLock lock2 = new ReentrantLock();
502		try {
503	<	lock.lock();
504	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
505	<	lock.unlock();
345	<	}
346	<	catch (Exception ex) {
347	<	fail("unexpected exception");
348	<	}
503	>	lock2.hasWaiters(c);
504	>	shouldThrow();
505	>	} catch (IllegalArgumentException success) {}
506		}
507
508	<	public void testAwaitUntil_Timeout() {
509	<	final ReentrantLock lock = new ReentrantLock();
508	>	/**
509	>	* hasWaiters throws IMSE if not locked
510	>	*/
511	>	public void testHasWaitersIMSE() {
512	>	final ReentrantLock lock = new ReentrantLock();
513		final Condition c = lock.newCondition();
514		try {
515	<	lock.lock();
516	<	java.util.Date d = new java.util.Date();
517	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
358	<	lock.unlock();
359	<	}
360	<	catch (Exception ex) {
361	<	fail("unexpected exception");
362	<	}
515	>	lock.hasWaiters(c);
516	>	shouldThrow();
517	>	} catch (IllegalMonitorStateException success) {}
518		}
519
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	–	});
520
521	+	/**
522	+	* getWaitQueueLength throws IAE if not owned
523	+	*/
524	+	public void testGetWaitQueueLengthIAE() {
525	+	final ReentrantLock lock = new ReentrantLock();
526	+	final Condition c = lock.newCondition();
527	+	final ReentrantLock lock2 = new ReentrantLock();
528		try {
529	<	t.start();
530	<	Thread.sleep(SHORT_DELAY_MS);
531	<	lock.lock();
532	<	c.signal();
533	<	lock.unlock();
534	<	t.join(SHORT_DELAY_MS);
535	<	assertFalse(t.isAlive());
536	<	}
537	<	catch (Exception ex) {
538	<	fail("unexpected exception");
539	<	}
529	>	lock2.getWaitQueueLength(c);
530	>	shouldThrow();
531	>	} catch (IllegalArgumentException success) {}
532	>	}
533	>
534	>	/**
535	>	* getWaitQueueLength throws IMSE if not locked
536	>	*/
537	>	public void testGetWaitQueueLengthIMSE() {
538	>	final ReentrantLock lock = new ReentrantLock();
539	>	final Condition c = lock.newCondition();
540	>	try {
541	>	lock.getWaitQueueLength(c);
542	>	shouldThrow();
543	>	} catch (IllegalMonitorStateException success) {}
544		}
545
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	–	});
546
547	+	/**
548	+	* getWaitingThreads throws IAE if not owned
549	+	*/
550	+	public void testGetWaitingThreadsIAE() {
551	+	final PublicReentrantLock lock = new PublicReentrantLock();
552	+	final Condition c = lock.newCondition();
553	+	final PublicReentrantLock lock2 = new PublicReentrantLock();
554		try {
555	<	t.start();
556	<	Thread.sleep(SHORT_DELAY_MS);
557	<	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	<	}
555	>	lock2.getWaitingThreads(c);
556	>	shouldThrow();
557	>	} catch (IllegalArgumentException success) {}
558		}
559
560	<	public void testGetWaitQueueLength() {
561	<	final ReentrantLock lock = new ReentrantLock();
562	<	final ReentrantLock.ConditionObject c = lock.newCondition();
563	<	Thread t1 = new Thread(new Runnable() {
564	<	public void run() {
565	<	try {
566	<	lock.lock();
567	<	threadAssertFalse(c.hasWaiters());
568	<	threadAssertEquals(0, c.getWaitQueueLength());
569	<	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	<	}
560	>	/**
561	>	* getWaitingThreads throws IMSE if not locked
562	>	*/
563	>	public void testGetWaitingThreadsIMSE() {
564	>	final PublicReentrantLock lock = new PublicReentrantLock();
565	>	final Condition c = lock.newCondition();
566	>	try {
567	>	lock.getWaitingThreads(c);
568	>	shouldThrow();
569	>	} catch (IllegalMonitorStateException success) {}
570		}
571
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	–	});
572
573	<	try {
574	<	lock.lock();
575	<	assertTrue(c.getWaitingThreads().isEmpty());
576	<	lock.unlock();
577	<	t1.start();
578	<	Thread.sleep(SHORT_DELAY_MS);
579	<	t2.start();
580	<	Thread.sleep(SHORT_DELAY_MS);
581	<	lock.lock();
582	<	assertTrue(c.hasWaiters());
583	<	assertTrue(c.getWaitingThreads().contains(t1));
584	<	assertTrue(c.getWaitingThreads().contains(t2));
585	<	c.signalAll();
586	<	lock.unlock();
587	<	Thread.sleep(SHORT_DELAY_MS);
573	>	/**
574	>	* hasWaiters returns true when a thread is waiting, else false
575	>	*/
576	>	public void testHasWaiters() throws InterruptedException {
577	>	final ReentrantLock lock = new ReentrantLock();
578	>	final Condition c = lock.newCondition();
579	>	Thread t = new Thread(new CheckedRunnable() {
580	>	public void realRun() throws InterruptedException {
581	>	lock.lock();
582	>	assertFalse(lock.hasWaiters(c));
583	>	assertEquals(0, lock.getWaitQueueLength(c));
584	>	c.await();
585	>	lock.unlock();
586	>	}});
587	>
588	>	t.start();
589	>	Thread.sleep(SHORT_DELAY_MS);
590	>	lock.lock();
591	>	assertTrue(lock.hasWaiters(c));
592	>	assertEquals(1, lock.getWaitQueueLength(c));
593	>	c.signal();
594	>	lock.unlock();
595	>	Thread.sleep(SHORT_DELAY_MS);
596	>	lock.lock();
597	>	assertFalse(lock.hasWaiters(c));
598	>	assertEquals(0, lock.getWaitQueueLength(c));
599	>	lock.unlock();
600	>	t.join(SHORT_DELAY_MS);
601	>	assertFalse(t.isAlive());
602	>	}
603	>
604	>	/**
605	>	* getWaitQueueLength returns number of waiting threads
606	>	*/
607	>	public void testGetWaitQueueLength() throws InterruptedException {
608	>	final ReentrantLock lock = new ReentrantLock();
609	>	final Condition c = lock.newCondition();
610	>	Thread t1 = new Thread(new CheckedRunnable() {
611	>	public void realRun() throws InterruptedException {
612	>	lock.lock();
613	>	assertFalse(lock.hasWaiters(c));
614	>	assertEquals(0, lock.getWaitQueueLength(c));
615	>	c.await();
616	>	lock.unlock();
617	>	}});
618	>
619	>	Thread t2 = new Thread(new CheckedRunnable() {
620	>	public void realRun() throws InterruptedException {
621	>	lock.lock();
622	>	assertTrue(lock.hasWaiters(c));
623	>	assertEquals(1, lock.getWaitQueueLength(c));
624	>	c.await();
625	>	lock.unlock();
626	>	}});
627	>
628	>	t1.start();
629	>	Thread.sleep(SHORT_DELAY_MS);
630	>	t2.start();
631	>	Thread.sleep(SHORT_DELAY_MS);
632	>	lock.lock();
633	>	assertTrue(lock.hasWaiters(c));
634	>	assertEquals(2, lock.getWaitQueueLength(c));
635	>	c.signalAll();
636	>	lock.unlock();
637	>	Thread.sleep(SHORT_DELAY_MS);
638	>	lock.lock();
639	>	assertFalse(lock.hasWaiters(c));
640	>	assertEquals(0, lock.getWaitQueueLength(c));
641	>	lock.unlock();
642	>	t1.join(SHORT_DELAY_MS);
643	>	t2.join(SHORT_DELAY_MS);
644	>	assertFalse(t1.isAlive());
645	>	assertFalse(t2.isAlive());
646	>	}
647	>
648	>	/**
649	>	* getWaitingThreads returns only and all waiting threads
650	>	*/
651	>	public void testGetWaitingThreads() throws InterruptedException {
652	>	final PublicReentrantLock lock = new PublicReentrantLock();
653	>	final Condition c = lock.newCondition();
654	>	Thread t1 = new Thread(new CheckedRunnable() {
655	>	public void realRun() throws InterruptedException {
656	>	lock.lock();
657	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
658	>	c.await();
659	>	lock.unlock();
660	>	}});
661	>
662	>	Thread t2 = new Thread(new CheckedRunnable() {
663	>	public void realRun() throws InterruptedException {
664	>	lock.lock();
665	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
666	>	c.await();
667	>	lock.unlock();
668	>	}});
669	>
670	>	lock.lock();
671	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
672	>	lock.unlock();
673	>	t1.start();
674	>	Thread.sleep(SHORT_DELAY_MS);
675	>	t2.start();
676	>	Thread.sleep(SHORT_DELAY_MS);
677	>	lock.lock();
678	>	assertTrue(lock.hasWaiters(c));
679	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
680	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
681	>	c.signalAll();
682	>	lock.unlock();
683	>	Thread.sleep(SHORT_DELAY_MS);
684	>	lock.lock();
685	>	assertFalse(lock.hasWaiters(c));
686	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
687	>	lock.unlock();
688	>	t1.join(SHORT_DELAY_MS);
689	>	t2.join(SHORT_DELAY_MS);
690	>	assertFalse(t1.isAlive());
691	>	assertFalse(t2.isAlive());
692	>	}
693	>
694	>	/** A helper class for uninterruptible wait tests */
695	>	class UninterruptibleThread extends Thread {
696	>	private ReentrantLock lock;
697	>	private Condition c;
698	>
699	>	public volatile boolean canAwake = false;
700	>	public volatile boolean interrupted = false;
701	>	public volatile boolean lockStarted = false;
702	>
703	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
704	>	this.lock = lock;
705	>	this.c = c;
706	>	}
707	>
708	>	public synchronized void run() {
709		lock.lock();
710	<	assertFalse(c.hasWaiters());
711	<	assertTrue(c.getWaitingThreads().isEmpty());
710	>	lockStarted = true;
711	>
712	>	while (!canAwake) {
713	>	c.awaitUninterruptibly();
714	>	}
715	>
716	>	interrupted = isInterrupted();
717		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");
718		}
719		}
720
721	<	public void testAwaitUninterruptibly() {
722	<	final ReentrantLock lock = new ReentrantLock();
721	>	/**
722	>	* awaitUninterruptibly doesn't abort on interrupt
723	>	*/
724	>	public void testAwaitUninterruptibly() throws InterruptedException {
725	>	final ReentrantLock lock = new ReentrantLock();
726		final Condition c = lock.newCondition();
727	<	Thread t = new Thread(new Runnable() {
556	<	public void run() {
557	<	lock.lock();
558	<	c.awaitUninterruptibly();
559	<	lock.unlock();
560	<	}
561	<	});
727	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
728
729	+	thread.start();
730	+
731	+	while (!thread.lockStarted) {
732	+	Thread.sleep(100);
733	+	}
734	+
735	+	lock.lock();
736		try {
737	<	t.start();
738	<	Thread.sleep(SHORT_DELAY_MS);
566	<	t.interrupt();
567	<	lock.lock();
737	>	thread.interrupt();
738	>	thread.canAwake = true;
739		c.signal();
740	+	} finally {
741		lock.unlock();
570	–	t.join(SHORT_DELAY_MS);
571	–	assertFalse(t.isAlive());
572	–	}
573	–	catch (Exception ex) {
574	–	fail("unexpected exception");
742		}
743	+
744	+	thread.join();
745	+	assertTrue(thread.interrupted);
746	+	assertFalse(thread.isAlive());
747	+	}
748	+
749	+	/**
750	+	* await is interruptible
751	+	*/
752	+	public void testAwait_Interrupt() throws InterruptedException {
753	+	final ReentrantLock lock = new ReentrantLock();
754	+	final Condition c = lock.newCondition();
755	+	Thread t = new Thread(new CheckedInterruptedRunnable() {
756	+	public void realRun() throws InterruptedException {
757	+	lock.lock();
758	+	c.await();
759	+	}});
760	+
761	+	t.start();
762	+	Thread.sleep(SHORT_DELAY_MS);
763	+	t.interrupt();
764	+	t.join(SHORT_DELAY_MS);
765	+	assertFalse(t.isAlive());
766		}
767
768	<	public void testAwait_Interrupt() {
769	<	final ReentrantLock lock = new ReentrantLock();
768	>	/**
769	>	* awaitNanos is interruptible
770	>	*/
771	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
772	>	final ReentrantLock lock = new ReentrantLock();
773		final Condition c = lock.newCondition();
774	<	Thread t = new Thread(new Runnable() {
775	<	public void run() {
776	<	try {
777	<	lock.lock();
778	<	c.await();
779	<	lock.unlock();
780	<	threadFail("should throw");
781	<	}
782	<	catch(InterruptedException success) {
783	<	}
784	<	}
592	<	});
593	<
594	<	try {
595	<	t.start();
596	<	Thread.sleep(SHORT_DELAY_MS);
597	<	t.interrupt();
598	<	t.join(SHORT_DELAY_MS);
599	<	assertFalse(t.isAlive());
600	<	}
601	<	catch (Exception ex) {
602	<	fail("unexpected exception");
603	<	}
774	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
778	>	}});
779	>
780	>	t.start();
781	>	Thread.sleep(SHORT_DELAY_MS);
782	>	t.interrupt();
783	>	t.join(SHORT_DELAY_MS);
784	>	assertFalse(t.isAlive());
785		}
786
787	<	public void testAwaitNanos_Interrupt() {
788	<	final ReentrantLock lock = new ReentrantLock();
787	>	/**
788	>	* awaitUntil is interruptible
789	>	*/
790	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
791	>	final ReentrantLock lock = new ReentrantLock();
792		final Condition c = lock.newCondition();
793	<	Thread t = new Thread(new Runnable() {
794	<	public void run() {
795	<	try {
796	<	lock.lock();
797	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
798	<	lock.unlock();
799	<	threadFail("should throw");
800	<	}
801	<	catch(InterruptedException success) {
802	<	}
803	<	}
804	<	});
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	<	}
793	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
794	>	public void realRun() throws InterruptedException {
795	>	lock.lock();
796	>	java.util.Date d = new java.util.Date();
797	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
798	>	}});
799	>
800	>	t.start();
801	>	Thread.sleep(SHORT_DELAY_MS);
802	>	t.interrupt();
803	>	t.join(SHORT_DELAY_MS);
804	>	assertFalse(t.isAlive());
805		}
806
807	<	public void testAwaitUntil_Interrupt() {
808	<	final ReentrantLock lock = new ReentrantLock();
807	>	/**
808	>	* signalAll wakes up all threads
809	>	*/
810	>	public void testSignalAll() throws InterruptedException {
811	>	final ReentrantLock lock = new ReentrantLock();
812		final Condition c = lock.newCondition();
813	<	Thread t = new Thread(new Runnable() {
814	<	public void run() {
815	<	try {
816	<	lock.lock();
817	<	java.util.Date d = new java.util.Date();
818	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
819	<	lock.unlock();
820	<	threadFail("should throw");
821	<	}
822	<	catch(InterruptedException success) {
823	<	}
824	<	}
825	<	});
826	<
827	<	try {
828	<	t.start();
829	<	Thread.sleep(SHORT_DELAY_MS);
830	<	t.interrupt();
831	<	t.join(SHORT_DELAY_MS);
832	<	assertFalse(t.isAlive());
833	<	}
834	<	catch (Exception ex) {
835	<	fail("unexpected exception");
836	<	}
813	>	Thread t1 = new Thread(new CheckedRunnable() {
814	>	public void realRun() throws InterruptedException {
815	>	lock.lock();
816	>	c.await();
817	>	lock.unlock();
818	>	}});
819	>
820	>	Thread t2 = new Thread(new CheckedRunnable() {
821	>	public void realRun() throws InterruptedException {
822	>	lock.lock();
823	>	c.await();
824	>	lock.unlock();
825	>	}});
826	>
827	>	t1.start();
828	>	t2.start();
829	>	Thread.sleep(SHORT_DELAY_MS);
830	>	lock.lock();
831	>	c.signalAll();
832	>	lock.unlock();
833	>	t1.join(SHORT_DELAY_MS);
834	>	t2.join(SHORT_DELAY_MS);
835	>	assertFalse(t1.isAlive());
836	>	assertFalse(t2.isAlive());
837		}
838
839	<	public void testSignalAll() {
840	<	final ReentrantLock lock = new ReentrantLock();
839	>	/**
840	>	* await after multiple reentrant locking preserves lock count
841	>	*/
842	>	public void testAwaitLockCount() throws InterruptedException {
843	>	final ReentrantLock lock = new ReentrantLock();
844		final Condition c = lock.newCondition();
845	<	Thread t1 = new Thread(new Runnable() {
846	<	public void run() {
847	<	try {
848	<	lock.lock();
849	<	c.await();
850	<	lock.unlock();
851	<	}
852	<	catch(InterruptedException e) {
853	<	threadFail("unexpected exception");
854	<	}
855	<	}
856	<	});
857	<
858	<	Thread t2 = new Thread(new Runnable() {
859	<	public void run() {
860	<	try {
861	<	lock.lock();
862	<	c.await();
863	<	lock.unlock();
864	<	}
865	<	catch(InterruptedException e) {
866	<	threadFail("unexpected exception");
867	<	}
868	<	}
869	<	});
870	<
871	<	try {
872	<	t1.start();
873	<	t2.start();
874	<	Thread.sleep(SHORT_DELAY_MS);
696	<	lock.lock();
697	<	c.signalAll();
698	<	lock.unlock();
699	<	t1.join(SHORT_DELAY_MS);
700	<	t2.join(SHORT_DELAY_MS);
701	<	assertFalse(t1.isAlive());
702	<	assertFalse(t2.isAlive());
703	<	}
704	<	catch (Exception ex) {
705	<	fail("unexpected exception");
706	<	}
845	>	Thread t1 = new Thread(new CheckedRunnable() {
846	>	public void realRun() throws InterruptedException {
847	>	lock.lock();
848	>	assertEquals(1, lock.getHoldCount());
849	>	c.await();
850	>	assertEquals(1, lock.getHoldCount());
851	>	lock.unlock();
852	>	}});
853	>
854	>	Thread t2 = new Thread(new CheckedRunnable() {
855	>	public void realRun() throws InterruptedException {
856	>	lock.lock();
857	>	lock.lock();
858	>	assertEquals(2, lock.getHoldCount());
859	>	c.await();
860	>	assertEquals(2, lock.getHoldCount());
861	>	lock.unlock();
862	>	lock.unlock();
863	>	}});
864	>
865	>	t1.start();
866	>	t2.start();
867	>	Thread.sleep(SHORT_DELAY_MS);
868	>	lock.lock();
869	>	c.signalAll();
870	>	lock.unlock();
871	>	t1.join(SHORT_DELAY_MS);
872	>	t2.join(SHORT_DELAY_MS);
873	>	assertFalse(t1.isAlive());
874	>	assertFalse(t2.isAlive());
875		}
876
877	<	public void testSerialization() {
877	>	/**
878	>	* A serialized lock deserializes as unlocked
879	>	*/
880	>	public void testSerialization() throws Exception {
881		ReentrantLock l = new ReentrantLock();
882		l.lock();
883		l.unlock();
884
885	<	try {
886	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
887	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
888	<	out.writeObject(l);
889	<	out.close();
890	<
891	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
892	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
893	<	ReentrantLock r = (ReentrantLock) in.readObject();
894	<	r.lock();
895	<	r.unlock();
896	<	} catch(Exception e){
897	<	e.printStackTrace();
898	<	fail("unexpected exception");
899	<	}
885	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
886	>	ObjectOutputStream out =
887	>	new ObjectOutputStream(new BufferedOutputStream(bout));
888	>	out.writeObject(l);
889	>	out.close();
890	>
891	>	ByteArrayInputStream bin =
892	>	new ByteArrayInputStream(bout.toByteArray());
893	>	ObjectInputStream in =
894	>	new ObjectInputStream(new BufferedInputStream(bin));
895	>	ReentrantLock r = (ReentrantLock) in.readObject();
896	>	r.lock();
897	>	r.unlock();
898	>	}
899	>
900	>	/**
901	>	* toString indicates current lock state
902	>	*/
903	>	public void testToString() {
904	>	ReentrantLock lock = new ReentrantLock();
905	>	String us = lock.toString();
906	>	assertTrue(us.indexOf("Unlocked") >= 0);
907	>	lock.lock();
908	>	String ls = lock.toString();
909	>	assertTrue(ls.indexOf("Locked") >= 0);
910		}
911
912		}

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