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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.45 by jsr166, Sat May 7 19:03:26 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import 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		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantLock lock;
29		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
30	<	public void run() {
31	<	try {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.lockInterruptibly();
32		}
33		}
34
36	–
35		/**
36		* A runnable calling lockInterruptibly that expects to be
37		* interrupted
38		*/
39	<	class InterruptedLockRunnable implements Runnable {
39	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
40		final ReentrantLock lock;
41		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
42	<	public void run() {
43	<	try {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
42	>	public void realRun() throws InterruptedException {
43	>	lock.lockInterruptibly();
44		}
45		}
46
#	Line 54 | Line 49 | public class ReentrantLockTest extends J
49		*/
50		static class PublicReentrantLock extends ReentrantLock {
51		PublicReentrantLock() { super(); }
52	<	public Collection<Thread> getQueuedThreads() {
53	<	return super.getQueuedThreads();
52	>	PublicReentrantLock(boolean fair) { super(fair); }
53	>	public Thread getOwner() {
54	>	return super.getOwner();
55	>	}
56	>	public Collection<Thread> getQueuedThreads() {
57	>	return super.getQueuedThreads();
58		}
59	<	public Collection<Thread> getWaitingThreads(Condition c) {
60	<	return super.getWaitingThreads(c);
59	>	public Collection<Thread> getWaitingThreads(Condition c) {
60	>	return super.getWaitingThreads(c);
61		}
62	+	}
63
64	+	/**
65	+	* Releases write lock, checking that it had a hold count of 1.
66	+	*/
67	+	void releaseLock(PublicReentrantLock lock) {
68	+	assertLockedBy(lock, Thread.currentThread());
69	+	lock.unlock();
70	+	assertFalse(lock.isHeldByCurrentThread());
71	+	assertNotLocked(lock);
72	+	}
73
74	+	/**
75	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
76	+	*/
77	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
78	+	long startTime = System.nanoTime();
79	+	while (!lock.hasQueuedThread(t)) {
80	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
81	+	throw new AssertionError("timed out");
82	+	Thread.yield();
83	+	}
84	+	assertTrue(t.isAlive());
85	+	assertTrue(lock.getOwner() != t);
86		}
87
88		/**
89	<	* Constructor sets given fairness
89	>	* Checks that lock is not locked.
90		*/
91	<	public void testConstructor() {
92	<	ReentrantLock rl = new ReentrantLock();
93	<	assertFalse(rl.isFair());
94	<	ReentrantLock r2 = new ReentrantLock(true);
95	<	assertTrue(r2.isFair());
91	>	void assertNotLocked(PublicReentrantLock lock) {
92	>	assertFalse(lock.isLocked());
93	>	assertFalse(lock.isHeldByCurrentThread());
94	>	assertNull(lock.getOwner());
95	>	assertEquals(0, lock.getHoldCount());
96	>	}
97	>
98	>	/**
99	>	* Checks that lock is locked by the given thread.
100	>	*/
101	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
102	>	assertTrue(lock.isLocked());
103	>	assertSame(t, lock.getOwner());
104	>	assertEquals(t == Thread.currentThread(),
105	>	lock.isHeldByCurrentThread());
106	>	assertEquals(t == Thread.currentThread(),
107	>	lock.getHoldCount() > 0);
108	>	}
109	>
110	>	/**
111	>	* Checks that condition c has no waiters.
112	>	*/
113	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
114	>	assertHasWaiters(lock, c, new Thread[] {});
115	>	}
116	>
117	>	/**
118	>	* Checks that condition c has exactly the given waiter threads.
119	>	*/
120	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
121	>	Thread... threads) {
122	>	lock.lock();
123	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
124	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
125	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
126	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
127	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
128	>	new HashSet<Thread>(Arrays.asList(threads)));
129	>	lock.unlock();
130	>	}
131	>
132	>	/**
133	>	* Constructor sets given fairness, and is in unlocked state
134	>	*/
135	>	public void testConstructor() {
136	>	PublicReentrantLock lock;
137	>
138	>	lock = new PublicReentrantLock();
139	>	assertFalse(lock.isFair());
140	>	assertNotLocked(lock);
141	>
142	>	lock = new PublicReentrantLock(true);
143	>	assertTrue(lock.isFair());
144	>	assertNotLocked(lock);
145	>
146	>	lock = new PublicReentrantLock(false);
147	>	assertFalse(lock.isFair());
148	>	assertNotLocked(lock);
149		}
150
151		/**
152		* locking an unlocked lock succeeds
153		*/
154	<	public void testLock() {
155	<	ReentrantLock rl = new ReentrantLock();
156	<	rl.lock();
157	<	assertTrue(rl.isLocked());
158	<	rl.unlock();
154	>	public void testLock() {
155	>	PublicReentrantLock lock = new PublicReentrantLock();
156	>	lock.lock();
157	>	assertLockedBy(lock, Thread.currentThread());
158	>	releaseLock(lock);
159		}
160
161		/**
162		* locking an unlocked fair lock succeeds
163		*/
164	<	public void testFairLock() {
165	<	ReentrantLock rl = new ReentrantLock(true);
166	<	rl.lock();
167	<	assertTrue(rl.isLocked());
168	<	rl.unlock();
164	>	public void testFairLock() {
165	>	PublicReentrantLock lock = new PublicReentrantLock(true);
166	>	lock.lock();
167	>	assertLockedBy(lock, Thread.currentThread());
168	>	releaseLock(lock);
169		}
170
171		/**
172		* Unlocking an unlocked lock throws IllegalMonitorStateException
173		*/
174	<	public void testUnlock_IllegalMonitorStateException() {
175	<	ReentrantLock rl = new ReentrantLock();
176	<	try {
177	<	rl.unlock();
178	<	shouldThrow();
179	<
106	<	} catch(IllegalMonitorStateException success){}
174	>	public void testUnlock_IllegalMonitorStateException() {
175	>	ReentrantLock lock = new ReentrantLock();
176	>	try {
177	>	lock.unlock();
178	>	shouldThrow();
179	>	} catch (IllegalMonitorStateException success) {}
180		}
181
182		/**
183		* tryLock on an unlocked lock succeeds
184		*/
185	<	public void testTryLock() {
186	<	ReentrantLock rl = new ReentrantLock();
187	<	assertTrue(rl.tryLock());
188	<	assertTrue(rl.isLocked());
189	<	rl.unlock();
185	>	public void testTryLock() {
186	>	PublicReentrantLock lock = new PublicReentrantLock();
187	>	assertTrue(lock.tryLock());
188	>	assertLockedBy(lock, Thread.currentThread());
189	>	releaseLock(lock);
190		}
191
119	–
192		/**
193		* hasQueuedThreads reports whether there are waiting threads
194		*/
195	<	public void testhasQueuedThreads() {
196	<	final ReentrantLock lock = new ReentrantLock();
195	>	public void testHasQueuedThreads() throws InterruptedException {
196	>	final PublicReentrantLock lock = new PublicReentrantLock();
197		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
198		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
199	<	try {
200	<	assertFalse(lock.hasQueuedThreads());
201	<	lock.lock();
202	<	t1.start();
203	<	Thread.sleep(SHORT_DELAY_MS);
204	<	assertTrue(lock.hasQueuedThreads());
205	<	t2.start();
206	<	Thread.sleep(SHORT_DELAY_MS);
207	<	assertTrue(lock.hasQueuedThreads());
208	<	t1.interrupt();
209	<	Thread.sleep(SHORT_DELAY_MS);
210	<	assertTrue(lock.hasQueuedThreads());
211	<	lock.unlock();
212	<	Thread.sleep(SHORT_DELAY_MS);
213	<	assertFalse(lock.hasQueuedThreads());
214	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
199	>	assertFalse(lock.hasQueuedThreads());
200	>	lock.lock();
201	>	assertFalse(lock.hasQueuedThreads());
202	>	t1.start();
203	>	waitForQueuedThread(lock, t1);
204	>	assertTrue(lock.hasQueuedThreads());
205	>	t2.start();
206	>	waitForQueuedThread(lock, t2);
207	>	assertTrue(lock.hasQueuedThreads());
208	>	t1.interrupt();
209	>	awaitTermination(t1);
210	>	assertTrue(lock.hasQueuedThreads());
211	>	lock.unlock();
212	>	awaitTermination(t2);
213	>	assertFalse(lock.hasQueuedThreads());
214	>	}
215
216		/**
217		* getQueueLength reports number of waiting threads
218		*/
219	<	public void testGetQueueLength() {
220	<	final ReentrantLock lock = new ReentrantLock();
219	>	public void testGetQueueLength() throws InterruptedException {
220	>	final PublicReentrantLock lock = new PublicReentrantLock();
221		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
222		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
223	<	try {
224	<	assertEquals(0, lock.getQueueLength());
225	<	lock.lock();
226	<	t1.start();
227	<	Thread.sleep(SHORT_DELAY_MS);
228	<	assertEquals(1, lock.getQueueLength());
229	<	t2.start();
230	<	Thread.sleep(SHORT_DELAY_MS);
231	<	assertEquals(2, lock.getQueueLength());
232	<	t1.interrupt();
233	<	Thread.sleep(SHORT_DELAY_MS);
234	<	assertEquals(1, lock.getQueueLength());
235	<	lock.unlock();
236	<	Thread.sleep(SHORT_DELAY_MS);
237	<	assertEquals(0, lock.getQueueLength());
171	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
223	>	assertEquals(0, lock.getQueueLength());
224	>	lock.lock();
225	>	t1.start();
226	>	waitForQueuedThread(lock, t1);
227	>	assertEquals(1, lock.getQueueLength());
228	>	t2.start();
229	>	waitForQueuedThread(lock, t2);
230	>	assertEquals(2, lock.getQueueLength());
231	>	t1.interrupt();
232	>	awaitTermination(t1);
233	>	assertEquals(1, lock.getQueueLength());
234	>	lock.unlock();
235	>	awaitTermination(t2);
236	>	assertEquals(0, lock.getQueueLength());
237	>	}
238
239		/**
240	<	* getQueuedThreads includes waiting threads
240	>	* getQueueLength reports number of waiting threads
241		*/
242	<	public void testGetQueuedThreads() {
243	<	final PublicReentrantLock lock = new PublicReentrantLock();
242	>	public void testGetQueueLength_fair() throws InterruptedException {
243	>	final PublicReentrantLock lock = new PublicReentrantLock(true);
244		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
245		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
246	<	try {
247	<	assertTrue(lock.getQueuedThreads().isEmpty());
248	<	lock.lock();
249	<	assertTrue(lock.getQueuedThreads().isEmpty());
250	<	t1.start();
251	<	Thread.sleep(SHORT_DELAY_MS);
252	<	assertTrue(lock.getQueuedThreads().contains(t1));
253	<	t2.start();
254	<	Thread.sleep(SHORT_DELAY_MS);
255	<	assertTrue(lock.getQueuedThreads().contains(t1));
256	<	assertTrue(lock.getQueuedThreads().contains(t2));
257	<	t1.interrupt();
258	<	Thread.sleep(SHORT_DELAY_MS);
259	<	assertFalse(lock.getQueuedThreads().contains(t1));
260	<	assertTrue(lock.getQueuedThreads().contains(t2));
200	<	lock.unlock();
201	<	Thread.sleep(SHORT_DELAY_MS);
202	<	assertTrue(lock.getQueuedThreads().isEmpty());
203	<	t1.join();
204	<	t2.join();
205	<	} catch(Exception e){
206	<	unexpectedException();
207	<	}
208	<	}
246	>	assertEquals(0, lock.getQueueLength());
247	>	lock.lock();
248	>	t1.start();
249	>	waitForQueuedThread(lock, t1);
250	>	assertEquals(1, lock.getQueueLength());
251	>	t2.start();
252	>	waitForQueuedThread(lock, t2);
253	>	assertEquals(2, lock.getQueueLength());
254	>	t1.interrupt();
255	>	awaitTermination(t1);
256	>	assertEquals(1, lock.getQueueLength());
257	>	lock.unlock();
258	>	awaitTermination(t2);
259	>	assertEquals(0, lock.getQueueLength());
260	>	}
261
262	+	/**
263	+	* hasQueuedThread(null) throws NPE
264	+	*/
265	+	public void testHasQueuedThreadNPE() {
266	+	final ReentrantLock lock = new ReentrantLock();
267	+	try {
268	+	lock.hasQueuedThread(null);
269	+	shouldThrow();
270	+	} catch (NullPointerException success) {}
271	+	}
272
273		/**
274	<	* timed tryLock is interruptible.
274	>	* hasQueuedThread reports whether a thread is queued.
275		*/
276	<	public void testInterruptedException2() {
277	<	final ReentrantLock lock = new ReentrantLock();
278	<	lock.lock();
279	<	Thread t = new Thread(new Runnable() {
280	<	public void run() {
281	<	try {
282	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
283	<	threadShouldThrow();
284	<	} catch(InterruptedException success){}
285	<	}
286	<	});
287	<	try {
288	<	t.start();
289	<	t.interrupt();
290	<	} catch(Exception e){
291	<	unexpectedException();
292	<	}
276	>	public void testHasQueuedThread() throws InterruptedException {
277	>	final PublicReentrantLock lock = new PublicReentrantLock();
278	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
279	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
280	>	assertFalse(lock.hasQueuedThread(t1));
281	>	assertFalse(lock.hasQueuedThread(t2));
282	>	lock.lock();
283	>	t1.start();
284	>	waitForQueuedThread(lock, t1);
285	>	assertTrue(lock.hasQueuedThread(t1));
286	>	assertFalse(lock.hasQueuedThread(t2));
287	>	t2.start();
288	>	waitForQueuedThread(lock, t2);
289	>	assertTrue(lock.hasQueuedThread(t1));
290	>	assertTrue(lock.hasQueuedThread(t2));
291	>	t1.interrupt();
292	>	awaitTermination(t1);
293	>	assertFalse(lock.hasQueuedThread(t1));
294	>	assertTrue(lock.hasQueuedThread(t2));
295	>	lock.unlock();
296	>	awaitTermination(t2);
297	>	assertFalse(lock.hasQueuedThread(t1));
298	>	assertFalse(lock.hasQueuedThread(t2));
299		}
300
301	+	/**
302	+	* getQueuedThreads includes waiting threads
303	+	*/
304	+	public void testGetQueuedThreads() throws InterruptedException {
305	+	final PublicReentrantLock lock = new PublicReentrantLock();
306	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
307	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
308	+	assertTrue(lock.getQueuedThreads().isEmpty());
309	+	lock.lock();
310	+	assertTrue(lock.getQueuedThreads().isEmpty());
311	+	t1.start();
312	+	waitForQueuedThread(lock, t1);
313	+	assertEquals(1, lock.getQueuedThreads().size());
314	+	assertTrue(lock.getQueuedThreads().contains(t1));
315	+	t2.start();
316	+	waitForQueuedThread(lock, t2);
317	+	assertEquals(2, lock.getQueuedThreads().size());
318	+	assertTrue(lock.getQueuedThreads().contains(t1));
319	+	assertTrue(lock.getQueuedThreads().contains(t2));
320	+	t1.interrupt();
321	+	awaitTermination(t1);
322	+	assertFalse(lock.getQueuedThreads().contains(t1));
323	+	assertTrue(lock.getQueuedThreads().contains(t2));
324	+	assertEquals(1, lock.getQueuedThreads().size());
325	+	lock.unlock();
326	+	awaitTermination(t2);
327	+	assertTrue(lock.getQueuedThreads().isEmpty());
328	+	}
329
330		/**
331	<	* TryLock on a locked lock fails
331	>	* timed tryLock is interruptible.
332		*/
333	<	public void testTryLockWhenLocked() {
334	<	final ReentrantLock lock = new ReentrantLock();
335	<	lock.lock();
336	<	Thread t = new Thread(new Runnable() {
337	<	public void run() {
338	<	threadAssertFalse(lock.tryLock());
339	<	}
340	<	});
341	<	try {
342	<	t.start();
343	<	t.join();
344	<	lock.unlock();
345	<	} catch(Exception e){
346	<	unexpectedException();
347	<	}
348	<	}
333	>	public void testTryLock_Interrupted() throws InterruptedException {
334	>	final PublicReentrantLock lock = new PublicReentrantLock();
335	>	lock.lock();
336	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
337	>	public void realRun() throws InterruptedException {
338	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
339	>	}});
340	>
341	>	waitForQueuedThread(lock, t);
342	>	t.interrupt();
343	>	awaitTermination(t);
344	>	releaseLock(lock);
345	>	}
346	>
347	>	/**
348	>	* tryLock on a locked lock fails
349	>	*/
350	>	public void testTryLockWhenLocked() throws InterruptedException {
351	>	final PublicReentrantLock lock = new PublicReentrantLock();
352	>	lock.lock();
353	>	Thread t = newStartedThread(new CheckedRunnable() {
354	>	public void realRun() {
355	>	assertFalse(lock.tryLock());
356	>	}});
357	>
358	>	awaitTermination(t);
359	>	releaseLock(lock);
360	>	}
361
362		/**
363		* Timed tryLock on a locked lock times out
364		*/
365	<	public void testTryLock_Timeout() {
366	<	final ReentrantLock lock = new ReentrantLock();
367	<	lock.lock();
368	<	Thread t = new Thread(new Runnable() {
369	<	public void run() {
370	<	try {
371	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
372	<	} catch (Exception ex) {
373	<	threadUnexpectedException();
374	<	}
375	<	}
376	<	});
377	<	try {
378	<	t.start();
379	<	t.join();
272	<	lock.unlock();
273	<	} catch(Exception e){
274	<	unexpectedException();
275	<	}
276	<	}
277	<
365	>	public void testTryLock_Timeout() throws InterruptedException {
366	>	final PublicReentrantLock lock = new PublicReentrantLock();
367	>	lock.lock();
368	>	Thread t = newStartedThread(new CheckedRunnable() {
369	>	public void realRun() throws InterruptedException {
370	>	long startTime = System.nanoTime();
371	>	long timeoutMillis = 10;
372	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
373	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
374	>	}});
375	>
376	>	awaitTermination(t);
377	>	releaseLock(lock);
378	>	}
379	>
380		/**
381		* getHoldCount returns number of recursive holds
382		*/
383		public void testGetHoldCount() {
384	<	ReentrantLock lock = new ReentrantLock();
385	<	for(int i = 1; i <= SIZE; i++) {
386	<	lock.lock();
387	<	assertEquals(i,lock.getHoldCount());
388	<	}
389	<	for(int i = SIZE; i > 0; i--) {
390	<	lock.unlock();
391	<	assertEquals(i-1,lock.getHoldCount());
392	<	}
384	>	ReentrantLock lock = new ReentrantLock();
385	>	for (int i = 1; i <= SIZE; i++) {
386	>	lock.lock();
387	>	assertEquals(i, lock.getHoldCount());
388	>	}
389	>	for (int i = SIZE; i > 0; i--) {
390	>	lock.unlock();
391	>	assertEquals(i-1, lock.getHoldCount());
392	>	}
393		}
394	<
293	<
394	>
395		/**
396		* isLocked is true when locked and false when not
397		*/
398	<	public void testIsLocked() {
399	<	final ReentrantLock lock = new ReentrantLock();
400	<	lock.lock();
401	<	assertTrue(lock.isLocked());
402	<	lock.unlock();
403	<	assertFalse(lock.isLocked());
404	<	Thread t = new Thread(new Runnable() {
405	<	public void run() {
406	<	lock.lock();
407	<	try {
408	<	Thread.sleep(SMALL_DELAY_MS);
409	<	}
410	<	catch(Exception e) {
411	<	threadUnexpectedException();
412	<	}
413	<	lock.unlock();
414	<	}
415	<	});
416	<	try {
417	<	t.start();
418	<	Thread.sleep(SHORT_DELAY_MS);
419	<	assertTrue(lock.isLocked());
420	<	t.join();
421	<	assertFalse(lock.isLocked());
422	<	} catch(Exception e){
423	<	unexpectedException();
323	<	}
398	>	public void testIsLocked() throws Exception {
399	>	final ReentrantLock lock = new ReentrantLock();
400	>	assertFalse(lock.isLocked());
401	>	lock.lock();
402	>	assertTrue(lock.isLocked());
403	>	lock.lock();
404	>	assertTrue(lock.isLocked());
405	>	lock.unlock();
406	>	assertTrue(lock.isLocked());
407	>	lock.unlock();
408	>	assertFalse(lock.isLocked());
409	>	final CyclicBarrier barrier = new CyclicBarrier(2);
410	>	Thread t = newStartedThread(new CheckedRunnable() {
411	>	public void realRun() throws Exception {
412	>	lock.lock();
413	>	assertTrue(lock.isLocked());
414	>	barrier.await();
415	>	barrier.await();
416	>	lock.unlock();
417	>	}});
418	>
419	>	barrier.await();
420	>	assertTrue(lock.isLocked());
421	>	barrier.await();
422	>	awaitTermination(t);
423	>	assertFalse(lock.isLocked());
424		}
425
326	–
426		/**
427		* lockInterruptibly is interruptible.
428		*/
429	<	public void testLockInterruptibly1() {
430	<	final ReentrantLock lock = new ReentrantLock();
431	<	lock.lock();
432	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
433	<	try {
434	<	t.start();
435	<	t.interrupt();
436	<	lock.unlock();
437	<	t.join();
339	<	} catch(Exception e){
340	<	unexpectedException();
341	<	}
342	<	}
429	>	public void testLockInterruptibly_Interrupted() throws InterruptedException {
430	>	final PublicReentrantLock lock = new PublicReentrantLock();
431	>	lock.lock();
432	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
433	>	waitForQueuedThread(lock, t);
434	>	t.interrupt();
435	>	awaitTermination(t);
436	>	releaseLock(lock);
437	>	}
438
439		/**
440		* lockInterruptibly succeeds when unlocked, else is interruptible
441		*/
442	<	public void testLockInterruptibly2() {
443	<	final ReentrantLock lock = new ReentrantLock();
444	<	try {
445	<	lock.lockInterruptibly();
446	<	} catch(Exception e) {
447	<	unexpectedException();
448	<	}
449	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
450	<	try {
451	<	t.start();
357	<	t.interrupt();
358	<	assertTrue(lock.isLocked());
359	<	assertTrue(lock.isHeldByCurrentThread());
360	<	t.join();
361	<	} catch(Exception e){
362	<	unexpectedException();
363	<	}
442	>	public void testLockInterruptibly_Interrupted2() throws InterruptedException {
443	>	final PublicReentrantLock lock = new PublicReentrantLock();
444	>	lock.lockInterruptibly();
445	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
446	>	waitForQueuedThread(lock, t);
447	>	t.interrupt();
448	>	assertTrue(lock.isLocked());
449	>	assertTrue(lock.isHeldByCurrentThread());
450	>	awaitTermination(t);
451	>	releaseLock(lock);
452		}
453
454		/**
455		* Calling await without holding lock throws IllegalMonitorStateException
456		*/
457	<	public void testAwait_IllegalMonitor() {
458	<	final ReentrantLock lock = new ReentrantLock();
457	>	public void testAwait_IllegalMonitor() throws InterruptedException {
458	>	final ReentrantLock lock = new ReentrantLock();
459		final Condition c = lock.newCondition();
460		try {
461		c.await();
462		shouldThrow();
463	<	}
464	<	catch (IllegalMonitorStateException success) {
465	<	}
466	<	catch (Exception ex) {
467	<	unexpectedException();
468	<	}
463	>	} catch (IllegalMonitorStateException success) {}
464	>	try {
465	>	c.await(LONG_DELAY_MS, MILLISECONDS);
466	>	shouldThrow();
467	>	} catch (IllegalMonitorStateException success) {}
468	>	try {
469	>	c.awaitNanos(100);
470	>	shouldThrow();
471	>	} catch (IllegalMonitorStateException success) {}
472	>	try {
473	>	c.awaitUninterruptibly();
474	>	shouldThrow();
475	>	} catch (IllegalMonitorStateException success) {}
476		}
477
478		/**
479		* Calling signal without holding lock throws IllegalMonitorStateException
480		*/
481		public void testSignal_IllegalMonitor() {
482	<	final ReentrantLock lock = new ReentrantLock();
482	>	final ReentrantLock lock = new ReentrantLock();
483		final Condition c = lock.newCondition();
484		try {
485		c.signal();
486		shouldThrow();
487	<	}
393	<	catch (IllegalMonitorStateException success) {
394	<	}
395	<	catch (Exception ex) {
396	<	unexpectedException();
397	<	}
487	>	} catch (IllegalMonitorStateException success) {}
488		}
489
490		/**
491		* awaitNanos without a signal times out
492		*/
493	<	public void testAwaitNanos_Timeout() {
494	<	final ReentrantLock lock = new ReentrantLock();
493	>	public void testAwaitNanos_Timeout() throws InterruptedException {
494	>	final ReentrantLock lock = new ReentrantLock();
495		final Condition c = lock.newCondition();
496	<	try {
497	<	lock.lock();
498	<	long t = c.awaitNanos(100);
499	<	assertTrue(t <= 0);
500	<	lock.unlock();
501	<	}
502	<	catch (Exception ex) {
503	<	unexpectedException();
414	<	}
496	>	lock.lock();
497	>	long startTime = System.nanoTime();
498	>	long timeoutMillis = 10;
499	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
500	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
501	>	assertTrue(nanosRemaining <= 0);
502	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
503	>	lock.unlock();
504		}
505
506		/**
507	<	*  timed await without a signal times out
507	>	* timed await without a signal times out
508		*/
509	<	public void testAwait_Timeout() {
510	<	final ReentrantLock lock = new ReentrantLock();
509	>	public void testAwait_Timeout() throws InterruptedException {
510	>	final ReentrantLock lock = new ReentrantLock();
511		final Condition c = lock.newCondition();
512	<	try {
513	<	lock.lock();
514	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
515	<	lock.unlock();
516	<	}
517	<	catch (Exception ex) {
429	<	unexpectedException();
430	<	}
512	>	lock.lock();
513	>	long startTime = System.nanoTime();
514	>	long timeoutMillis = 10;
515	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
516	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
517	>	lock.unlock();
518		}
519
520		/**
521		* awaitUntil without a signal times out
522		*/
523	<	public void testAwaitUntil_Timeout() {
524	<	final ReentrantLock lock = new ReentrantLock();
523	>	public void testAwaitUntil_Timeout() throws InterruptedException {
524	>	final ReentrantLock lock = new ReentrantLock();
525		final Condition c = lock.newCondition();
526	<	try {
527	<	lock.lock();
528	<	java.util.Date d = new java.util.Date();
529	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
530	<	lock.unlock();
531	<	}
532	<	catch (Exception ex) {
446	<	unexpectedException();
447	<	}
526	>	lock.lock();
527	>	long startTime = System.nanoTime();
528	>	long timeoutMillis = 10;
529	>	java.util.Date d = new java.util.Date();
530	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
531	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
532	>	lock.unlock();
533		}
534
535		/**
536		* await returns when signalled
537		*/
538	<	public void testAwait() {
539	<	final ReentrantLock lock = new ReentrantLock();
538	>	public void testAwait() throws InterruptedException {
539	>	final PublicReentrantLock lock = new PublicReentrantLock();
540		final Condition c = lock.newCondition();
541	<	Thread t = new Thread(new Runnable() {
542	<	public void run() {
543	<	try {
544	<	lock.lock();
545	<	c.await();
546	<	lock.unlock();
547	<	}
548	<	catch(InterruptedException e) {
549	<	threadUnexpectedException();
550	<	}
551	<	}
552	<	});
553	<
554	<	try {
555	<	t.start();
556	<	Thread.sleep(SHORT_DELAY_MS);
557	<	lock.lock();
473	<	c.signal();
474	<	lock.unlock();
475	<	t.join(SHORT_DELAY_MS);
476	<	assertFalse(t.isAlive());
477	<	}
478	<	catch (Exception ex) {
479	<	unexpectedException();
480	<	}
541	>	final CountDownLatch locked = new CountDownLatch(1);
542	>	Thread t = newStartedThread(new CheckedRunnable() {
543	>	public void realRun() throws InterruptedException {
544	>	lock.lock();
545	>	locked.countDown();
546	>	c.await();
547	>	lock.unlock();
548	>	}});
549	>
550	>	locked.await();
551	>	lock.lock();
552	>	assertHasWaiters(lock, c, t);
553	>	c.signal();
554	>	assertHasNoWaiters(lock, c);
555	>	assertTrue(t.isAlive());
556	>	lock.unlock();
557	>	awaitTermination(t);
558		}
559
560		/**
561		* hasWaiters throws NPE if null
562		*/
563		public void testHasWaitersNPE() {
564	<	final ReentrantLock lock = new ReentrantLock();
564	>	final ReentrantLock lock = new ReentrantLock();
565		try {
566		lock.hasWaiters(null);
567		shouldThrow();
568	<	} catch (NullPointerException success) {
492	<	} catch (Exception ex) {
493	<	unexpectedException();
494	<	}
568	>	} catch (NullPointerException success) {}
569		}
570
571		/**
572		* getWaitQueueLength throws NPE if null
573		*/
574		public void testGetWaitQueueLengthNPE() {
575	<	final ReentrantLock lock = new ReentrantLock();
575	>	final ReentrantLock lock = new ReentrantLock();
576		try {
577		lock.getWaitQueueLength(null);
578		shouldThrow();
579	<	} catch (NullPointerException success) {
506	<	} catch (Exception ex) {
507	<	unexpectedException();
508	<	}
579	>	} catch (NullPointerException success) {}
580		}
581
511	–
582		/**
583		* getWaitingThreads throws NPE if null
584		*/
585		public void testGetWaitingThreadsNPE() {
586	<	final PublicReentrantLock lock = new PublicReentrantLock();
586	>	final PublicReentrantLock lock = new PublicReentrantLock();
587		try {
588		lock.getWaitingThreads(null);
589		shouldThrow();
590	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
590	>	} catch (NullPointerException success) {}
591		}
592
526	–
593		/**
594	<	* hasWaiters throws IAE if not owned
594	>	* hasWaiters throws IllegalArgumentException if not owned
595		*/
596		public void testHasWaitersIAE() {
597	<	final ReentrantLock lock = new ReentrantLock();
598	<	final Condition c = (lock.newCondition());
599	<	final ReentrantLock lock2 = new ReentrantLock();
597	>	final ReentrantLock lock = new ReentrantLock();
598	>	final Condition c = lock.newCondition();
599	>	final ReentrantLock lock2 = new ReentrantLock();
600		try {
601		lock2.hasWaiters(c);
602		shouldThrow();
603	<	} catch (IllegalArgumentException success) {
538	<	} catch (Exception ex) {
539	<	unexpectedException();
540	<	}
603	>	} catch (IllegalArgumentException success) {}
604		}
605
606		/**
607	<	* hasWaiters throws IMSE if not locked
607	>	* hasWaiters throws IllegalMonitorStateException if not locked
608		*/
609		public void testHasWaitersIMSE() {
610	<	final ReentrantLock lock = new ReentrantLock();
611	<	final Condition c = (lock.newCondition());
610	>	final ReentrantLock lock = new ReentrantLock();
611	>	final Condition c = lock.newCondition();
612		try {
613		lock.hasWaiters(c);
614		shouldThrow();
615	<	} catch (IllegalMonitorStateException success) {
553	<	} catch (Exception ex) {
554	<	unexpectedException();
555	<	}
615	>	} catch (IllegalMonitorStateException success) {}
616		}
617
558	–
618		/**
619	<	* getWaitQueueLength throws IAE if not owned
619	>	* getWaitQueueLength throws IllegalArgumentException if not owned
620		*/
621		public void testGetWaitQueueLengthIAE() {
622	<	final ReentrantLock lock = new ReentrantLock();
623	<	final Condition c = (lock.newCondition());
624	<	final ReentrantLock lock2 = new ReentrantLock();
622	>	final ReentrantLock lock = new ReentrantLock();
623	>	final Condition c = lock.newCondition();
624	>	final ReentrantLock lock2 = new ReentrantLock();
625		try {
626		lock2.getWaitQueueLength(c);
627		shouldThrow();
628	<	} catch (IllegalArgumentException success) {
570	<	} catch (Exception ex) {
571	<	unexpectedException();
572	<	}
628	>	} catch (IllegalArgumentException success) {}
629		}
630
631		/**
632	<	* getWaitQueueLength throws IMSE if not locked
632	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
633		*/
634		public void testGetWaitQueueLengthIMSE() {
635	<	final ReentrantLock lock = new ReentrantLock();
636	<	final Condition c = (lock.newCondition());
635	>	final ReentrantLock lock = new ReentrantLock();
636	>	final Condition c = lock.newCondition();
637		try {
638		lock.getWaitQueueLength(c);
639		shouldThrow();
640	<	} catch (IllegalMonitorStateException success) {
585	<	} catch (Exception ex) {
586	<	unexpectedException();
587	<	}
640	>	} catch (IllegalMonitorStateException success) {}
641		}
642
590	–
643		/**
644	<	* getWaitingThreads throws IAE if not owned
644	>	* getWaitingThreads throws IllegalArgumentException if not owned
645		*/
646		public void testGetWaitingThreadsIAE() {
647	<	final PublicReentrantLock lock = new PublicReentrantLock();
648	<	final Condition c = (lock.newCondition());
649	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
647	>	final PublicReentrantLock lock = new PublicReentrantLock();
648	>	final Condition c = lock.newCondition();
649	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
650		try {
651		lock2.getWaitingThreads(c);
652		shouldThrow();
653	<	} catch (IllegalArgumentException success) {
602	<	} catch (Exception ex) {
603	<	unexpectedException();
604	<	}
653	>	} catch (IllegalArgumentException success) {}
654		}
655
656		/**
657	<	* getWaitingThreads throws IMSE if not locked
657	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
658		*/
659		public void testGetWaitingThreadsIMSE() {
660	<	final PublicReentrantLock lock = new PublicReentrantLock();
661	<	final Condition c = (lock.newCondition());
660	>	final PublicReentrantLock lock = new PublicReentrantLock();
661	>	final Condition c = lock.newCondition();
662		try {
663		lock.getWaitingThreads(c);
664		shouldThrow();
665	<	} catch (IllegalMonitorStateException success) {
617	<	} catch (Exception ex) {
618	<	unexpectedException();
619	<	}
665	>	} catch (IllegalMonitorStateException success) {}
666		}
667
622	–
623	–
668		/**
669		* hasWaiters returns true when a thread is waiting, else false
670		*/
671	<	public void testHasWaiters() {
672	<	final ReentrantLock lock = new ReentrantLock();
671	>	public void testHasWaiters() throws InterruptedException {
672	>	final PublicReentrantLock lock = new PublicReentrantLock();
673		final Condition c = lock.newCondition();
674	<	Thread t = new Thread(new Runnable() {
675	<	public void run() {
676	<	try {
677	<	lock.lock();
678	<	threadAssertFalse(lock.hasWaiters(c));
679	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
680	<	c.await();
681	<	lock.unlock();
682	<	}
683	<	catch(InterruptedException e) {
684	<	threadUnexpectedException();
685	<	}
686	<	}
687	<	});
688	<
689	<	try {
690	<	t.start();
691	<	Thread.sleep(SHORT_DELAY_MS);
692	<	lock.lock();
693	<	assertTrue(lock.hasWaiters(c));
694	<	assertEquals(1, lock.getWaitQueueLength(c));
695	<	c.signal();
696	<	lock.unlock();
653	<	Thread.sleep(SHORT_DELAY_MS);
654	<	lock.lock();
655	<	assertFalse(lock.hasWaiters(c));
656	<	assertEquals(0, lock.getWaitQueueLength(c));
657	<	lock.unlock();
658	<	t.join(SHORT_DELAY_MS);
659	<	assertFalse(t.isAlive());
660	<	}
661	<	catch (Exception ex) {
662	<	unexpectedException();
663	<	}
674	>	final CountDownLatch locked = new CountDownLatch(1);
675	>	Thread t = newStartedThread(new CheckedRunnable() {
676	>	public void realRun() throws InterruptedException {
677	>	lock.lock();
678	>	assertHasNoWaiters(lock, c);
679	>	assertFalse(lock.hasWaiters(c));
680	>	locked.countDown();
681	>	c.await();
682	>	assertHasNoWaiters(lock, c);
683	>	assertFalse(lock.hasWaiters(c));
684	>	lock.unlock();
685	>	}});
686	>
687	>	locked.await();
688	>	lock.lock();
689	>	assertHasWaiters(lock, c, t);
690	>	assertTrue(lock.hasWaiters(c));
691	>	c.signal();
692	>	assertHasNoWaiters(lock, c);
693	>	assertFalse(lock.hasWaiters(c));
694	>	lock.unlock();
695	>	awaitTermination(t);
696	>	assertHasNoWaiters(lock, c);
697		}
698
699		/**
700		* getWaitQueueLength returns number of waiting threads
701		*/
702	<	public void testGetWaitQueueLength() {
703	<	final ReentrantLock lock = new ReentrantLock();
702	>	public void testGetWaitQueueLength() throws InterruptedException {
703	>	final PublicReentrantLock lock = new PublicReentrantLock();
704		final Condition c = lock.newCondition();
705	<	Thread t1 = new Thread(new Runnable() {
706	<	public void run() {
707	<	try {
708	<	lock.lock();
709	<	threadAssertFalse(lock.hasWaiters(c));
710	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
711	<	c.await();
712	<	lock.unlock();
713	<	}
714	<	catch(InterruptedException e) {
715	<	threadUnexpectedException();
716	<	}
717	<	}
718	<	});
719	<
720	<	Thread t2 = new Thread(new Runnable() {
721	<	public void run() {
722	<	try {
723	<	lock.lock();
724	<	threadAssertTrue(lock.hasWaiters(c));
725	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
726	<	c.await();
727	<	lock.unlock();
728	<	}
729	<	catch(InterruptedException e) {
730	<	threadUnexpectedException();
731	<	}
732	<	}
733	<	});
734	<
735	<	try {
736	<	t1.start();
737	<	Thread.sleep(SHORT_DELAY_MS);
738	<	t2.start();
739	<	Thread.sleep(SHORT_DELAY_MS);
740	<	lock.lock();
741	<	assertTrue(lock.hasWaiters(c));
742	<	assertEquals(2, lock.getWaitQueueLength(c));
743	<	c.signalAll();
744	<	lock.unlock();
745	<	Thread.sleep(SHORT_DELAY_MS);
746	<	lock.lock();
747	<	assertFalse(lock.hasWaiters(c));
748	<	assertEquals(0, lock.getWaitQueueLength(c));
749	<	lock.unlock();
750	<	t1.join(SHORT_DELAY_MS);
751	<	t2.join(SHORT_DELAY_MS);
752	<	assertFalse(t1.isAlive());
720	<	assertFalse(t2.isAlive());
721	<	}
722	<	catch (Exception ex) {
723	<	unexpectedException();
724	<	}
705	>	final CountDownLatch locked1 = new CountDownLatch(1);
706	>	final CountDownLatch locked2 = new CountDownLatch(1);
707	>	Thread t1 = new Thread(new CheckedRunnable() {
708	>	public void realRun() throws InterruptedException {
709	>	lock.lock();
710	>	assertFalse(lock.hasWaiters(c));
711	>	assertEquals(0, lock.getWaitQueueLength(c));
712	>	locked1.countDown();
713	>	c.await();
714	>	lock.unlock();
715	>	}});
716	>
717	>	Thread t2 = new Thread(new CheckedRunnable() {
718	>	public void realRun() throws InterruptedException {
719	>	lock.lock();
720	>	assertTrue(lock.hasWaiters(c));
721	>	assertEquals(1, lock.getWaitQueueLength(c));
722	>	locked2.countDown();
723	>	c.await();
724	>	lock.unlock();
725	>	}});
726	>
727	>	lock.lock();
728	>	assertEquals(0, lock.getWaitQueueLength(c));
729	>	lock.unlock();
730	>
731	>	t1.start();
732	>	locked1.await();
733	>
734	>	lock.lock();
735	>	assertHasWaiters(lock, c, t1);
736	>	assertEquals(1, lock.getWaitQueueLength(c));
737	>	lock.unlock();
738	>
739	>	t2.start();
740	>	locked2.await();
741	>
742	>	lock.lock();
743	>	assertHasWaiters(lock, c, t1, t2);
744	>	assertEquals(2, lock.getWaitQueueLength(c));
745	>	c.signalAll();
746	>	assertHasNoWaiters(lock, c);
747	>	lock.unlock();
748	>
749	>	awaitTermination(t1);
750	>	awaitTermination(t2);
751	>
752	>	assertHasNoWaiters(lock, c);
753		}
754
755		/**
756		* getWaitingThreads returns only and all waiting threads
757		*/
758	<	public void testGetWaitingThreads() {
759	<	final PublicReentrantLock lock = new PublicReentrantLock();
758	>	public void testGetWaitingThreads() throws InterruptedException {
759	>	final PublicReentrantLock lock = new PublicReentrantLock();
760		final Condition c = lock.newCondition();
761	<	Thread t1 = new Thread(new Runnable() {
762	<	public void run() {
763	<	try {
764	<	lock.lock();
765	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
766	<	c.await();
767	<	lock.unlock();
768	<	}
769	<	catch(InterruptedException e) {
770	<	threadUnexpectedException();
771	<	}
772	<	}
773	<	});
774	<
775	<	Thread t2 = new Thread(new Runnable() {
776	<	public void run() {
777	<	try {
778	<	lock.lock();
779	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
780	<	c.await();
781	<	lock.unlock();
782	<	}
783	<	catch(InterruptedException e) {
784	<	threadUnexpectedException();
785	<	}
786	<	}
787	<	});
788	<
789	<	try {
790	<	lock.lock();
791	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
792	<	lock.unlock();
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	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
800	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
801	<	c.signalAll();
802	<	lock.unlock();
803	<	Thread.sleep(SHORT_DELAY_MS);
804	<	lock.lock();
805	<	assertFalse(lock.hasWaiters(c));
778	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
779	<	lock.unlock();
780	<	t1.join(SHORT_DELAY_MS);
781	<	t2.join(SHORT_DELAY_MS);
782	<	assertFalse(t1.isAlive());
783	<	assertFalse(t2.isAlive());
784	<	}
785	<	catch (Exception ex) {
786	<	unexpectedException();
787	<	}
788	<	}
761	>	final CountDownLatch locked1 = new CountDownLatch(1);
762	>	final CountDownLatch locked2 = new CountDownLatch(1);
763	>	Thread t1 = new Thread(new CheckedRunnable() {
764	>	public void realRun() throws InterruptedException {
765	>	lock.lock();
766	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
767	>	locked1.countDown();
768	>	c.await();
769	>	lock.unlock();
770	>	}});
771	>
772	>	Thread t2 = new Thread(new CheckedRunnable() {
773	>	public void realRun() throws InterruptedException {
774	>	lock.lock();
775	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
776	>	locked2.countDown();
777	>	c.await();
778	>	lock.unlock();
779	>	}});
780	>
781	>	lock.lock();
782	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
783	>	lock.unlock();
784	>
785	>	t1.start();
786	>	locked1.await();
787	>
788	>	lock.lock();
789	>	assertHasWaiters(lock, c, t1);
790	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
791	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
792	>	assertEquals(1, lock.getWaitingThreads(c).size());
793	>	lock.unlock();
794	>
795	>	t2.start();
796	>	locked2.await();
797	>
798	>	lock.lock();
799	>	assertHasWaiters(lock, c, t1, t2);
800	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
801	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
802	>	assertEquals(2, lock.getWaitingThreads(c).size());
803	>	c.signalAll();
804	>	assertHasNoWaiters(lock, c);
805	>	lock.unlock();
806
807	+	awaitTermination(t1);
808	+	awaitTermination(t2);
809
810	+	assertHasNoWaiters(lock, c);
811	+	}
812
813		/**
814		* awaitUninterruptibly doesn't abort on interrupt
815		*/
816	<	public void testAwaitUninterruptibly() {
817	<	final ReentrantLock lock = new ReentrantLock();
816	>	public void testAwaitUninterruptibly() throws InterruptedException {
817	>	final ReentrantLock lock = new ReentrantLock();
818		final Condition c = lock.newCondition();
819	<	Thread t = new Thread(new Runnable() {
820	<	public void run() {
821	<	lock.lock();
822	<	c.awaitUninterruptibly();
823	<	lock.unlock();
824	<	}
825	<	});
826	<
827	<	try {
828	<	t.start();
829	<	Thread.sleep(SHORT_DELAY_MS);
830	<	t.interrupt();
831	<	lock.lock();
832	<	c.signal();
833	<	lock.unlock();
834	<	assert(t.isInterrupted());
835	<	t.join(SHORT_DELAY_MS);
836	<	assertFalse(t.isAlive());
837	<	}
838	<	catch (Exception ex) {
818	<	unexpectedException();
819	<	}
819	>	final CountDownLatch locked = new CountDownLatch(1);
820	>	Thread t = newStartedThread(new CheckedRunnable() {
821	>	public void realRun() {
822	>	lock.lock();
823	>	locked.countDown();
824	>	c.awaitUninterruptibly();
825	>	assertTrue(Thread.interrupted());
826	>	lock.unlock();
827	>	}});
828	>
829	>	locked.await();
830	>	lock.lock();
831	>	lock.unlock();
832	>	t.interrupt();
833	>	long timeoutMillis = 10;
834	>	assertThreadJoinTimesOut(t, timeoutMillis);
835	>	lock.lock();
836	>	c.signal();
837	>	lock.unlock();
838	>	awaitTermination(t);
839		}
840
841		/**
842		* await is interruptible
843		*/
844	<	public void testAwait_Interrupt() {
845	<	final ReentrantLock lock = new ReentrantLock();
844	>	public void testAwait_Interrupt() throws InterruptedException {
845	>	final PublicReentrantLock lock = new PublicReentrantLock();
846		final Condition c = lock.newCondition();
847	<	Thread t = new Thread(new Runnable() {
848	<	public void run() {
849	<	try {
850	<	lock.lock();
851	<	c.await();
852	<	lock.unlock();
853	<	threadShouldThrow();
854	<	}
855	<	catch(InterruptedException success) {
856	<	}
857	<	}
858	<	});
859	<
860	<	try {
861	<	t.start();
862	<	Thread.sleep(SHORT_DELAY_MS);
863	<	t.interrupt();
864	<	t.join(SHORT_DELAY_MS);
865	<	assertFalse(t.isAlive());
866	<	}
867	<	catch (Exception ex) {
868	<	unexpectedException();
869	<	}
847	>	final CountDownLatch locked = new CountDownLatch(1);
848	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
849	>	public void realRun() throws InterruptedException {
850	>	lock.lock();
851	>	assertTrue(lock.isLocked());
852	>	assertTrue(lock.isHeldByCurrentThread());
853	>	assertHasNoWaiters(lock, c);
854	>	locked.countDown();
855	>	try {
856	>	c.await();
857	>	} finally {
858	>	assertTrue(lock.isLocked());
859	>	assertTrue(lock.isHeldByCurrentThread());
860	>	assertHasNoWaiters(lock, c);
861	>	lock.unlock();
862	>	assertFalse(Thread.interrupted());
863	>	}
864	>	}});
865	>
866	>	locked.await();
867	>	assertHasWaiters(lock, c, t);
868	>	t.interrupt();
869	>	awaitTermination(t);
870	>	assertFalse(lock.isLocked());
871		}
872
873		/**
874		* awaitNanos is interruptible
875		*/
876	<	public void testAwaitNanos_Interrupt() {
877	<	final ReentrantLock lock = new ReentrantLock();
876	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
877	>	final PublicReentrantLock lock = new PublicReentrantLock();
878		final Condition c = lock.newCondition();
879	<	Thread t = new Thread(new Runnable() {
880	<	public void run() {
881	<	try {
882	<	lock.lock();
883	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
884	<	lock.unlock();
885	<	threadShouldThrow();
886	<	}
887	<	catch(InterruptedException success) {
888	<	}
889	<	}
890	<	});
891	<
892	<	try {
893	<	t.start();
894	<	Thread.sleep(SHORT_DELAY_MS);
895	<	t.interrupt();
896	<	t.join(SHORT_DELAY_MS);
897	<	assertFalse(t.isAlive());
898	<	}
899	<	catch (Exception ex) {
900	<	unexpectedException();
901	<	}
879	>	final CountDownLatch locked = new CountDownLatch(1);
880	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
881	>	public void realRun() throws InterruptedException {
882	>	lock.lock();
883	>	assertTrue(lock.isLocked());
884	>	assertTrue(lock.isHeldByCurrentThread());
885	>	assertHasNoWaiters(lock, c);
886	>	locked.countDown();
887	>	try {
888	>	c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS));
889	>	} finally {
890	>	assertTrue(lock.isLocked());
891	>	assertTrue(lock.isHeldByCurrentThread());
892	>	assertHasNoWaiters(lock, c);
893	>	lock.unlock();
894	>	assertFalse(Thread.interrupted());
895	>	}
896	>	}});
897	>
898	>	locked.await();
899	>	assertHasWaiters(lock, c, t);
900	>	t.interrupt();
901	>	awaitTermination(t);
902	>	assertFalse(lock.isLocked());
903		}
904
905		/**
906		* awaitUntil is interruptible
907		*/
908	<	public void testAwaitUntil_Interrupt() {
909	<	final ReentrantLock lock = new ReentrantLock();
908	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
909	>	final PublicReentrantLock lock = new PublicReentrantLock();
910		final Condition c = lock.newCondition();
911	<	Thread t = new Thread(new Runnable() {
912	<	public void run() {
913	<	try {
914	<	lock.lock();
915	<	java.util.Date d = new java.util.Date();
916	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
917	<	lock.unlock();
918	<	threadShouldThrow();
919	<	}
920	<	catch(InterruptedException success) {
921	<	}
922	<	}
923	<	});
924	<
925	<	try {
926	<	t.start();
927	<	Thread.sleep(SHORT_DELAY_MS);
928	<	t.interrupt();
929	<	t.join(SHORT_DELAY_MS);
930	<	assertFalse(t.isAlive());
931	<	}
932	<	catch (Exception ex) {
933	<	unexpectedException();
934	<	}
911	>	final CountDownLatch locked = new CountDownLatch(1);
912	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
913	>	public void realRun() throws InterruptedException {
914	>	lock.lock();
915	>	assertTrue(lock.isLocked());
916	>	assertTrue(lock.isHeldByCurrentThread());
917	>	assertHasNoWaiters(lock, c);
918	>	locked.countDown();
919	>	java.util.Date d = new java.util.Date();
920	>	try {
921	>	c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS));
922	>	} finally {
923	>	assertTrue(lock.isLocked());
924	>	assertTrue(lock.isHeldByCurrentThread());
925	>	assertHasNoWaiters(lock, c);
926	>	lock.unlock();
927	>	assertFalse(Thread.interrupted());
928	>	}
929	>	}});
930	>
931	>	locked.await();
932	>	assertHasWaiters(lock, c, t);
933	>	t.interrupt();
934	>	awaitTermination(t);
935	>	assertFalse(lock.isLocked());
936		}
937
938		/**
939		* signalAll wakes up all threads
940		*/
941	<	public void testSignalAll() {
942	<	final ReentrantLock lock = new ReentrantLock();
941	>	public void testSignalAll() throws InterruptedException {
942	>	final PublicReentrantLock lock = new PublicReentrantLock();
943		final Condition c = lock.newCondition();
944	<	Thread t1 = new Thread(new Runnable() {
945	<	public void run() {
946	<	try {
947	<	lock.lock();
948	<	c.await();
949	<	lock.unlock();
950	<	}
951	<	catch(InterruptedException e) {
952	<	threadUnexpectedException();
953	<	}
954	<	}
955	<	});
956	<
957	<	Thread t2 = new Thread(new Runnable() {
958	<	public void run() {
959	<	try {
960	<	lock.lock();
961	<	c.await();
962	<	lock.unlock();
963	<	}
964	<	catch(InterruptedException e) {
965	<	threadUnexpectedException();
966	<	}
967	<	}
968	<	});
969	<
970	<	try {
971	<	t1.start();
972	<	t2.start();
973	<	Thread.sleep(SHORT_DELAY_MS);
974	<	lock.lock();
975	<	c.signalAll();
976	<	lock.unlock();
977	<	t1.join(SHORT_DELAY_MS);
978	<	t2.join(SHORT_DELAY_MS);
979	<	assertFalse(t1.isAlive());
980	<	assertFalse(t2.isAlive());
981	<	}
982	<	catch (Exception ex) {
983	<	unexpectedException();
984	<	}
944	>	final CountDownLatch locked = new CountDownLatch(2);
945	>	Thread t1 = newStartedThread(new CheckedRunnable() {
946	>	public void realRun() throws InterruptedException {
947	>	lock.lock();
948	>	locked.countDown();
949	>	c.await();
950	>	lock.unlock();
951	>	}});
952	>
953	>	Thread t2 = newStartedThread(new CheckedRunnable() {
954	>	public void realRun() throws InterruptedException {
955	>	lock.lock();
956	>	locked.countDown();
957	>	c.await();
958	>	lock.unlock();
959	>	}});
960	>
961	>	locked.await();
962	>	lock.lock();
963	>	assertHasWaiters(lock, c, t1, t2);
964	>	c.signalAll();
965	>	assertHasNoWaiters(lock, c);
966	>	lock.unlock();
967	>	awaitTermination(t1);
968	>	awaitTermination(t2);
969	>	}
970	>
971	>	/**
972	>	* await after multiple reentrant locking preserves lock count
973	>	*/
974	>	public void testAwaitLockCount() throws InterruptedException {
975	>	final PublicReentrantLock lock = new PublicReentrantLock();
976	>	final Condition c = lock.newCondition();
977	>	final CountDownLatch locked = new CountDownLatch(2);
978	>	Thread t1 = newStartedThread(new CheckedRunnable() {
979	>	public void realRun() throws InterruptedException {
980	>	lock.lock();
981	>	assertLockedBy(lock, Thread.currentThread());
982	>	assertEquals(1, lock.getHoldCount());
983	>	locked.countDown();
984	>	c.await();
985	>	assertLockedBy(lock, Thread.currentThread());
986	>	assertEquals(1, lock.getHoldCount());
987	>	lock.unlock();
988	>	}});
989	>
990	>	Thread t2 = newStartedThread(new CheckedRunnable() {
991	>	public void realRun() throws InterruptedException {
992	>	lock.lock();
993	>	lock.lock();
994	>	assertLockedBy(lock, Thread.currentThread());
995	>	assertEquals(2, lock.getHoldCount());
996	>	locked.countDown();
997	>	c.await();
998	>	assertLockedBy(lock, Thread.currentThread());
999	>	assertEquals(2, lock.getHoldCount());
1000	>	lock.unlock();
1001	>	lock.unlock();
1002	>	}});
1003	>
1004	>	locked.await();
1005	>	lock.lock();
1006	>	assertHasWaiters(lock, c, t1, t2);
1007	>	assertEquals(1, lock.getHoldCount());
1008	>	c.signalAll();
1009	>	assertHasNoWaiters(lock, c);
1010	>	lock.unlock();
1011	>	awaitTermination(t1);
1012	>	awaitTermination(t2);
1013		}
1014
1015		/**
1016		* A serialized lock deserializes as unlocked
1017		*/
1018	<	public void testSerialization() {
1018	>	public void testSerialization() throws Exception {
1019		ReentrantLock l = new ReentrantLock();
1020		l.lock();
1021		l.unlock();
1022
1023	<	try {
1024	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1025	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1026	<	out.writeObject(l);
1027	<	out.close();
1028	<
1029	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1030	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1031	<	ReentrantLock r = (ReentrantLock) in.readObject();
1032	<	r.lock();
1033	<	r.unlock();
1034	<	} catch(Exception e){
1035	<	e.printStackTrace();
986	<	unexpectedException();
987	<	}
1023	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1024	>	ObjectOutputStream out =
1025	>	new ObjectOutputStream(new BufferedOutputStream(bout));
1026	>	out.writeObject(l);
1027	>	out.close();
1028	>
1029	>	ByteArrayInputStream bin =
1030	>	new ByteArrayInputStream(bout.toByteArray());
1031	>	ObjectInputStream in =
1032	>	new ObjectInputStream(new BufferedInputStream(bin));
1033	>	ReentrantLock r = (ReentrantLock) in.readObject();
1034	>	r.lock();
1035	>	r.unlock();
1036		}
1037
1038	+	/**
1039	+	* toString indicates current lock state
1040	+	*/
1041	+	public void testToString() {
1042	+	ReentrantLock lock = new ReentrantLock();
1043	+	String us = lock.toString();
1044	+	assertTrue(us.indexOf("Unlocked") >= 0);
1045	+	lock.lock();
1046	+	String ls = lock.toString();
1047	+	assertTrue(ls.indexOf("Locked") >= 0);
1048	+	}
1049		}

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