ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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 1.67 by jsr166, Fri Sep 29 22:31:55 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.concurrent.locks.*;
11	<	import java.util.concurrent.*;
12	<	import java.util.*;
13	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	+	import java.util.ArrayList;
12	+	import java.util.Arrays;
13	+	import java.util.Collection;
14	+	import java.util.HashSet;
15	+	import java.util.concurrent.CountDownLatch;
16	+	import java.util.concurrent.CyclicBarrier;
17	+	import java.util.concurrent.ThreadLocalRandom;
18	+	import java.util.concurrent.locks.Condition;
19	+	import java.util.concurrent.locks.ReentrantLock;
20	+
21	+	import junit.framework.AssertionFailedError;
22	+	import junit.framework.Test;
23	+	import junit.framework.TestSuite;
24	+
25	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
26		public class ReentrantLockTest extends JSR166TestCase {
27		public static void main(String[] args) {
28	<	junit.textui.TestRunner.run (suite());
28	>	main(suite(), args);
29		}
30		public static Test suite() {
31	<	return new TestSuite(ReentrantLockTest.class);
31	>	return new TestSuite(ReentrantLockTest.class);
32		}
33
34		/**
35	<	* A runnable calling lockInterruptibly
35	>	* A checked runnable calling lockInterruptibly
36		*/
37	<	class InterruptibleLockRunnable implements Runnable {
37	>	class InterruptibleLockRunnable extends CheckedRunnable {
38		final ReentrantLock lock;
39	<	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
40	<	public void run() {
41	<	try {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
39	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
40	>	public void realRun() throws InterruptedException {
41	>	lock.lockInterruptibly();
42		}
43		}
44
36	–
45		/**
46	<	* A runnable calling lockInterruptibly that expects to be
46	>	* A checked runnable calling lockInterruptibly that expects to be
47		* interrupted
48		*/
49	<	class InterruptedLockRunnable implements Runnable {
49	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
50		final ReentrantLock lock;
51	<	InterruptedLockRunnable(ReentrantLock l) { lock = l; }
52	<	public void run() {
53	<	try {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
51	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
52	>	public void realRun() throws InterruptedException {
53	>	lock.lockInterruptibly();
54		}
55		}
56
#	Line 54 | Line 59 | public class ReentrantLockTest extends J
59		*/
60		static class PublicReentrantLock extends ReentrantLock {
61		PublicReentrantLock() { super(); }
62	<	public Collection<Thread> getQueuedThreads() {
63	<	return super.getQueuedThreads();
62	>	PublicReentrantLock(boolean fair) { super(fair); }
63	>	public Thread getOwner() {
64	>	return super.getOwner();
65		}
66	<	public Collection<Thread> getWaitingThreads(Condition c) {
67	<	return super.getWaitingThreads(c);
66	>	public Collection<Thread> getQueuedThreads() {
67	>	return super.getQueuedThreads();
68		}
69	+	public Collection<Thread> getWaitingThreads(Condition c) {
70	+	return super.getWaitingThreads(c);
71	+	}
72	+	}
73
74	+	/**
75	+	* Releases write lock, checking that it had a hold count of 1.
76	+	*/
77	+	void releaseLock(PublicReentrantLock lock) {
78	+	assertLockedByMoi(lock);
79	+	lock.unlock();
80	+	assertFalse(lock.isHeldByCurrentThread());
81	+	assertNotLocked(lock);
82	+	}
83
84	+	/**
85	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
86	+	*/
87	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
88	+	long startTime = System.nanoTime();
89	+	while (!lock.hasQueuedThread(t)) {
90	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
91	+	throw new AssertionFailedError("timed out");
92	+	Thread.yield();
93	+	}
94	+	assertTrue(t.isAlive());
95	+	assertNotSame(t, lock.getOwner());
96		}
97
98		/**
99	<	* Constructor sets given fairness
99	>	* Checks that lock is not locked.
100		*/
101	<	public void testConstructor() {
102	<	ReentrantLock rl = new ReentrantLock();
103	<	assertFalse(rl.isFair());
104	<	ReentrantLock r2 = new ReentrantLock(true);
105	<	assertTrue(r2.isFair());
101	>	void assertNotLocked(PublicReentrantLock lock) {
102	>	assertFalse(lock.isLocked());
103	>	assertFalse(lock.isHeldByCurrentThread());
104	>	assertNull(lock.getOwner());
105	>	assertEquals(0, lock.getHoldCount());
106		}
107
108		/**
109	<	* locking an unlocked lock succeeds
109	>	* Checks that lock is locked by the given thread.
110		*/
111	<	public void testLock() {
112	<	ReentrantLock rl = new ReentrantLock();
113	<	rl.lock();
114	<	assertTrue(rl.isLocked());
115	<	rl.unlock();
111	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
112	>	assertTrue(lock.isLocked());
113	>	assertSame(t, lock.getOwner());
114	>	assertEquals(t == Thread.currentThread(),
115	>	lock.isHeldByCurrentThread());
116	>	assertEquals(t == Thread.currentThread(),
117	>	lock.getHoldCount() > 0);
118		}
119
120		/**
121	<	* locking an unlocked fair lock succeeds
121	>	* Checks that lock is locked by the current thread.
122		*/
123	<	public void testFairLock() {
124	<	ReentrantLock rl = new ReentrantLock(true);
92	<	rl.lock();
93	<	assertTrue(rl.isLocked());
94	<	rl.unlock();
123	>	void assertLockedByMoi(PublicReentrantLock lock) {
124	>	assertLockedBy(lock, Thread.currentThread());
125		}
126
127		/**
128	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
128	>	* Checks that condition c has no waiters.
129		*/
130	<	public void testUnlock_IllegalMonitorStateException() {
131	<	ReentrantLock rl = new ReentrantLock();
132	<	try {
133	<	rl.unlock();
134	<	shouldThrow();
130	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
131	>	assertHasWaiters(lock, c, new Thread[] {});
132	>	}
133	>
134	>	/**
135	>	* Checks that condition c has exactly the given waiter threads.
136	>	*/
137	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
138	>	Thread... threads) {
139	>	lock.lock();
140	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
141	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
142	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
143	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
144	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
145	>	new HashSet<Thread>(Arrays.asList(threads)));
146	>	lock.unlock();
147	>	}
148	>
149	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
150
151	<	} catch(IllegalMonitorStateException success){}
151	>	static AwaitMethod randomAwaitMethod() {
152	>	AwaitMethod[] awaitMethods = AwaitMethod.values();
153	>	return awaitMethods[ThreadLocalRandom.current().nextInt(awaitMethods.length)];
154		}
155
156		/**
157	<	* tryLock on an unlocked lock succeeds
157	>	* Awaits condition "indefinitely" using the specified AwaitMethod.
158		*/
159	<	public void testTryLock() {
160	<	ReentrantLock rl = new ReentrantLock();
161	<	assertTrue(rl.tryLock());
162	<	assertTrue(rl.isLocked());
163	<	rl.unlock();
159	>	void await(Condition c, AwaitMethod awaitMethod)
160	>	throws InterruptedException {
161	>	long timeoutMillis = 2 * LONG_DELAY_MS;
162	>	switch (awaitMethod) {
163	>	case await:
164	>	c.await();
165	>	break;
166	>	case awaitTimed:
167	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
168	>	break;
169	>	case awaitNanos:
170	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
171	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
172	>	assertTrue(nanosRemaining > timeoutNanos / 2);
173	>	assertTrue(nanosRemaining <= timeoutNanos);
174	>	break;
175	>	case awaitUntil:
176	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
177	>	break;
178	>	default:
179	>	throw new AssertionError();
180	>	}
181		}
182
183	+	/**
184	+	* Constructor sets given fairness, and is in unlocked state
185	+	*/
186	+	public void testConstructor() {
187	+	PublicReentrantLock lock;
188	+
189	+	lock = new PublicReentrantLock();
190	+	assertFalse(lock.isFair());
191	+	assertNotLocked(lock);
192	+
193	+	lock = new PublicReentrantLock(true);
194	+	assertTrue(lock.isFair());
195	+	assertNotLocked(lock);
196	+
197	+	lock = new PublicReentrantLock(false);
198	+	assertFalse(lock.isFair());
199	+	assertNotLocked(lock);
200	+	}
201	+
202	+	/**
203	+	* locking an unlocked lock succeeds
204	+	*/
205	+	public void testLock()      { testLock(false); }
206	+	public void testLock_fair() { testLock(true); }
207	+	public void testLock(boolean fair) {
208	+	PublicReentrantLock lock = new PublicReentrantLock(fair);
209	+	lock.lock();
210	+	assertLockedByMoi(lock);
211	+	releaseLock(lock);
212	+	}
213	+
214	+	/**
215	+	* Unlocking an unlocked lock throws IllegalMonitorStateException
216	+	*/
217	+	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
218	+	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
219	+	public void testUnlock_IMSE(boolean fair) {
220	+	final ReentrantLock lock = new ReentrantLock(fair);
221	+	try {
222	+	lock.unlock();
223	+	shouldThrow();
224	+	} catch (IllegalMonitorStateException success) {}
225	+	}
226	+
227	+	/**
228	+	* tryLock on an unlocked lock succeeds
229	+	*/
230	+	public void testTryLock()      { testTryLock(false); }
231	+	public void testTryLock_fair() { testTryLock(true); }
232	+	public void testTryLock(boolean fair) {
233	+	PublicReentrantLock lock = new PublicReentrantLock(fair);
234	+	assertTrue(lock.tryLock());
235	+	assertLockedByMoi(lock);
236	+	assertTrue(lock.tryLock());
237	+	assertLockedByMoi(lock);
238	+	lock.unlock();
239	+	releaseLock(lock);
240	+	}
241
242		/**
243		* hasQueuedThreads reports whether there are waiting threads
244		*/
245	<	public void testhasQueuedThreads() {
246	<	final ReentrantLock lock = new ReentrantLock();
245	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
246	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
247	>	public void testHasQueuedThreads(boolean fair) {
248	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
249		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
250		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
251	<	try {
252	<	assertFalse(lock.hasQueuedThreads());
253	<	lock.lock();
254	<	t1.start();
255	<	Thread.sleep(SHORT_DELAY_MS);
256	<	assertTrue(lock.hasQueuedThreads());
257	<	t2.start();
258	<	Thread.sleep(SHORT_DELAY_MS);
259	<	assertTrue(lock.hasQueuedThreads());
260	<	t1.interrupt();
261	<	Thread.sleep(SHORT_DELAY_MS);
262	<	assertTrue(lock.hasQueuedThreads());
263	<	lock.unlock();
264	<	Thread.sleep(SHORT_DELAY_MS);
265	<	assertFalse(lock.hasQueuedThreads());
266	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
251	>	assertFalse(lock.hasQueuedThreads());
252	>	lock.lock();
253	>	assertFalse(lock.hasQueuedThreads());
254	>	t1.start();
255	>	waitForQueuedThread(lock, t1);
256	>	assertTrue(lock.hasQueuedThreads());
257	>	t2.start();
258	>	waitForQueuedThread(lock, t2);
259	>	assertTrue(lock.hasQueuedThreads());
260	>	t1.interrupt();
261	>	awaitTermination(t1);
262	>	assertTrue(lock.hasQueuedThreads());
263	>	lock.unlock();
264	>	awaitTermination(t2);
265	>	assertFalse(lock.hasQueuedThreads());
266	>	}
267
268		/**
269		* getQueueLength reports number of waiting threads
270		*/
271	<	public void testGetQueueLength() {
272	<	final ReentrantLock lock = new ReentrantLock();
271	>	public void testGetQueueLength()      { testGetQueueLength(false); }
272	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
273	>	public void testGetQueueLength(boolean fair) {
274	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
275		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
276		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
277	+	assertEquals(0, lock.getQueueLength());
278	+	lock.lock();
279	+	t1.start();
280	+	waitForQueuedThread(lock, t1);
281	+	assertEquals(1, lock.getQueueLength());
282	+	t2.start();
283	+	waitForQueuedThread(lock, t2);
284	+	assertEquals(2, lock.getQueueLength());
285	+	t1.interrupt();
286	+	awaitTermination(t1);
287	+	assertEquals(1, lock.getQueueLength());
288	+	lock.unlock();
289	+	awaitTermination(t2);
290	+	assertEquals(0, lock.getQueueLength());
291	+	}
292	+
293	+	/**
294	+	* hasQueuedThread(null) throws NPE
295	+	*/
296	+	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
297	+	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
298	+	public void testHasQueuedThreadNPE(boolean fair) {
299	+	final ReentrantLock lock = new ReentrantLock(fair);
300		try {
301	<	assertEquals(0, lock.getQueueLength());
302	<	lock.lock();
303	<	t1.start();
304	<	Thread.sleep(SHORT_DELAY_MS);
161	<	assertEquals(1, lock.getQueueLength());
162	<	t2.start();
163	<	Thread.sleep(SHORT_DELAY_MS);
164	<	assertEquals(2, lock.getQueueLength());
165	<	t1.interrupt();
166	<	Thread.sleep(SHORT_DELAY_MS);
167	<	assertEquals(1, lock.getQueueLength());
168	<	lock.unlock();
169	<	Thread.sleep(SHORT_DELAY_MS);
170	<	assertEquals(0, lock.getQueueLength());
171	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
301	>	lock.hasQueuedThread(null);
302	>	shouldThrow();
303	>	} catch (NullPointerException success) {}
304	>	}
305
306		/**
307	<	* getQueuedThreads includes waiting threads
307	>	* hasQueuedThread reports whether a thread is queued
308		*/
309	<	public void testGetQueuedThreads() {
310	<	final PublicReentrantLock lock = new PublicReentrantLock();
309	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
310	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
311	>	public void testHasQueuedThread(boolean fair) {
312	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
313		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
314		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
315	<	try {
316	<	assertTrue(lock.getQueuedThreads().isEmpty());
317	<	lock.lock();
318	<	assertTrue(lock.getQueuedThreads().isEmpty());
319	<	t1.start();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	assertTrue(lock.getQueuedThreads().contains(t1));
322	<	t2.start();
323	<	Thread.sleep(SHORT_DELAY_MS);
324	<	assertTrue(lock.getQueuedThreads().contains(t1));
325	<	assertTrue(lock.getQueuedThreads().contains(t2));
326	<	t1.interrupt();
327	<	Thread.sleep(SHORT_DELAY_MS);
328	<	assertFalse(lock.getQueuedThreads().contains(t1));
329	<	assertTrue(lock.getQueuedThreads().contains(t2));
330	<	lock.unlock();
331	<	Thread.sleep(SHORT_DELAY_MS);
332	<	assertTrue(lock.getQueuedThreads().isEmpty());
333	<	t1.join();
334	<	t2.join();
205	<	} catch(Exception e){
206	<	unexpectedException();
207	<	}
208	<	}
209	<
315	>	assertFalse(lock.hasQueuedThread(t1));
316	>	assertFalse(lock.hasQueuedThread(t2));
317	>	lock.lock();
318	>	t1.start();
319	>	waitForQueuedThread(lock, t1);
320	>	assertTrue(lock.hasQueuedThread(t1));
321	>	assertFalse(lock.hasQueuedThread(t2));
322	>	t2.start();
323	>	waitForQueuedThread(lock, t2);
324	>	assertTrue(lock.hasQueuedThread(t1));
325	>	assertTrue(lock.hasQueuedThread(t2));
326	>	t1.interrupt();
327	>	awaitTermination(t1);
328	>	assertFalse(lock.hasQueuedThread(t1));
329	>	assertTrue(lock.hasQueuedThread(t2));
330	>	lock.unlock();
331	>	awaitTermination(t2);
332	>	assertFalse(lock.hasQueuedThread(t1));
333	>	assertFalse(lock.hasQueuedThread(t2));
334	>	}
335
336		/**
337	<	* timed tryLock is interruptible.
337	>	* getQueuedThreads includes waiting threads
338		*/
339	<	public void testInterruptedException2() {
340	<	final ReentrantLock lock = new ReentrantLock();
341	<	lock.lock();
342	<	Thread t = new Thread(new Runnable() {
343	<	public void run() {
344	<	try {
345	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
346	<	threadShouldThrow();
347	<	} catch(InterruptedException success){}
348	<	}
349	<	});
350	<	try {
351	<	t.start();
352	<	t.interrupt();
353	<	} catch(Exception e){
354	<	unexpectedException();
355	<	}
339	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
340	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
341	>	public void testGetQueuedThreads(boolean fair) {
342	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
343	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
344	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
345	>	assertTrue(lock.getQueuedThreads().isEmpty());
346	>	lock.lock();
347	>	assertTrue(lock.getQueuedThreads().isEmpty());
348	>	t1.start();
349	>	waitForQueuedThread(lock, t1);
350	>	assertEquals(1, lock.getQueuedThreads().size());
351	>	assertTrue(lock.getQueuedThreads().contains(t1));
352	>	t2.start();
353	>	waitForQueuedThread(lock, t2);
354	>	assertEquals(2, lock.getQueuedThreads().size());
355	>	assertTrue(lock.getQueuedThreads().contains(t1));
356	>	assertTrue(lock.getQueuedThreads().contains(t2));
357	>	t1.interrupt();
358	>	awaitTermination(t1);
359	>	assertFalse(lock.getQueuedThreads().contains(t1));
360	>	assertTrue(lock.getQueuedThreads().contains(t2));
361	>	assertEquals(1, lock.getQueuedThreads().size());
362	>	lock.unlock();
363	>	awaitTermination(t2);
364	>	assertTrue(lock.getQueuedThreads().isEmpty());
365		}
366
367	+	/**
368	+	* timed tryLock is interruptible
369	+	*/
370	+	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
371	+	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
372	+	public void testTryLock_Interruptible(boolean fair) {
373	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
374	+	lock.lock();
375	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
376	+	public void realRun() throws InterruptedException {
377	+	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
378	+	}});
379	+
380	+	waitForQueuedThread(lock, t);
381	+	t.interrupt();
382	+	awaitTermination(t);
383	+	releaseLock(lock);
384	+	}
385
386		/**
387	<	* TryLock on a locked lock fails
388	<	*/
389	<	public void testTryLockWhenLocked() {
390	<	final ReentrantLock lock = new ReentrantLock();
391	<	lock.lock();
392	<	Thread t = new Thread(new Runnable() {
393	<	public void run() {
394	<	threadAssertFalse(lock.tryLock());
395	<	}
396	<	});
397	<	try {
398	<	t.start();
399	<	t.join();
400	<	lock.unlock();
401	<	} catch(Exception e){
250	<	unexpectedException();
251	<	}
252	<	}
387	>	* tryLock on a locked lock fails
388	>	*/
389	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
390	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
391	>	public void testTryLockWhenLocked(boolean fair) {
392	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
393	>	lock.lock();
394	>	Thread t = newStartedThread(new CheckedRunnable() {
395	>	public void realRun() {
396	>	assertFalse(lock.tryLock());
397	>	}});
398	>
399	>	awaitTermination(t);
400	>	releaseLock(lock);
401	>	}
402
403		/**
404		* Timed tryLock on a locked lock times out
405		*/
406	<	public void testTryLock_Timeout() {
407	<	final ReentrantLock lock = new ReentrantLock();
408	<	lock.lock();
409	<	Thread t = new Thread(new Runnable() {
410	<	public void run() {
411	<	try {
412	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
413	<	} catch (Exception ex) {
414	<	threadUnexpectedException();
415	<	}
416	<	}
417	<	});
418	<	try {
419	<	t.start();
420	<	t.join();
272	<	lock.unlock();
273	<	} catch(Exception e){
274	<	unexpectedException();
275	<	}
276	<	}
277	<
278	<	/**
279	<	* getHoldCount returns number of recursive holds
280	<	*/
281	<	public void testGetHoldCount() {
282	<	ReentrantLock lock = new ReentrantLock();
283	<	for(int i = 1; i <= SIZE; i++) {
284	<	lock.lock();
285	<	assertEquals(i,lock.getHoldCount());
286	<	}
287	<	for(int i = SIZE; i > 0; i--) {
288	<	lock.unlock();
289	<	assertEquals(i-1,lock.getHoldCount());
290	<	}
406	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
407	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
408	>	public void testTryLock_Timeout(boolean fair) {
409	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
410	>	final long timeoutMillis = timeoutMillis();
411	>	lock.lock();
412	>	Thread t = newStartedThread(new CheckedRunnable() {
413	>	public void realRun() throws InterruptedException {
414	>	long startTime = System.nanoTime();
415	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
416	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
417	>	}});
418	>
419	>	awaitTermination(t);
420	>	releaseLock(lock);
421		}
422	<
293	<
422	>
423		/**
424	<	* isLocked is true when locked and false when not
424	>	* getHoldCount returns number of recursive holds
425		*/
426	<	public void testIsLocked() {
427	<	final ReentrantLock lock = new ReentrantLock();
428	<	lock.lock();
429	<	assertTrue(lock.isLocked());
430	<	lock.unlock();
431	<	assertFalse(lock.isLocked());
432	<	Thread t = new Thread(new Runnable() {
433	<	public void run() {
434	<	lock.lock();
435	<	try {
436	<	Thread.sleep(SMALL_DELAY_MS);
308	<	}
309	<	catch(Exception e) {
310	<	threadUnexpectedException();
311	<	}
312	<	lock.unlock();
313	<	}
314	<	});
315	<	try {
316	<	t.start();
317	<	Thread.sleep(SHORT_DELAY_MS);
318	<	assertTrue(lock.isLocked());
319	<	t.join();
320	<	assertFalse(lock.isLocked());
321	<	} catch(Exception e){
322	<	unexpectedException();
426	>	public void testGetHoldCount()      { testGetHoldCount(false); }
427	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
428	>	public void testGetHoldCount(boolean fair) {
429	>	final ReentrantLock lock = new ReentrantLock(fair);
430	>	for (int i = 1; i <= SIZE; i++) {
431	>	lock.lock();
432	>	assertEquals(i, lock.getHoldCount());
433	>	}
434	>	for (int i = SIZE; i > 0; i--) {
435	>	lock.unlock();
436	>	assertEquals(i - 1, lock.getHoldCount());
437		}
438		}
439
326	–
440		/**
441	<	* lockInterruptibly is interruptible.
441	>	* isLocked is true when locked and false when not
442		*/
443	<	public void testLockInterruptibly1() {
444	<	final ReentrantLock lock = new ReentrantLock();
445	<	lock.lock();
446	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
443	>	public void testIsLocked()      { testIsLocked(false); }
444	>	public void testIsLocked_fair() { testIsLocked(true); }
445	>	public void testIsLocked(boolean fair) {
446	>	final ReentrantLock lock = new ReentrantLock(fair);
447		try {
448	<	t.start();
449	<	t.interrupt();
448	>	assertFalse(lock.isLocked());
449	>	lock.lock();
450	>	assertTrue(lock.isLocked());
451	>	lock.lock();
452	>	assertTrue(lock.isLocked());
453		lock.unlock();
454	<	t.join();
455	<	} catch(Exception e){
456	<	unexpectedException();
457	<	}
458	<	}
454	>	assertTrue(lock.isLocked());
455	>	lock.unlock();
456	>	assertFalse(lock.isLocked());
457	>	final CyclicBarrier barrier = new CyclicBarrier(2);
458	>	Thread t = newStartedThread(new CheckedRunnable() {
459	>	public void realRun() throws Exception {
460	>	lock.lock();
461	>	assertTrue(lock.isLocked());
462	>	barrier.await();
463	>	barrier.await();
464	>	lock.unlock();
465	>	}});
466	>
467	>	barrier.await();
468	>	assertTrue(lock.isLocked());
469	>	barrier.await();
470	>	awaitTermination(t);
471	>	assertFalse(lock.isLocked());
472	>	} catch (Exception fail) { threadUnexpectedException(fail); }
473	>	}
474
475		/**
476		* lockInterruptibly succeeds when unlocked, else is interruptible
477		*/
478	<	public void testLockInterruptibly2() {
479	<	final ReentrantLock lock = new ReentrantLock();
480	<	try {
481	<	lock.lockInterruptibly();
351	<	} catch(Exception e) {
352	<	unexpectedException();
353	<	}
354	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
478	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
479	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
480	>	public void testLockInterruptibly(boolean fair) {
481	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
482		try {
483	<	t.start();
484	<	t.interrupt();
485	<	assertTrue(lock.isLocked());
486	<	assertTrue(lock.isHeldByCurrentThread());
487	<	t.join();
488	<	} catch(Exception e){
489	<	unexpectedException();
490	<	}
483	>	lock.lockInterruptibly();
484	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
485	>	assertLockedByMoi(lock);
486	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
487	>	waitForQueuedThread(lock, t);
488	>	t.interrupt();
489	>	assertTrue(lock.isLocked());
490	>	assertTrue(lock.isHeldByCurrentThread());
491	>	awaitTermination(t);
492	>	releaseLock(lock);
493		}
494
495		/**
496		* Calling await without holding lock throws IllegalMonitorStateException
497		*/
498	<	public void testAwait_IllegalMonitor() {
499	<	final ReentrantLock lock = new ReentrantLock();
498	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
499	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
500	>	public void testAwait_IMSE(boolean fair) {
501	>	final ReentrantLock lock = new ReentrantLock(fair);
502		final Condition c = lock.newCondition();
503	<	try {
504	<	c.await();
505	<	shouldThrow();
506	<	}
507	<	catch (IllegalMonitorStateException success) {
508	<	}
509	<	catch (Exception ex) {
510	<	unexpectedException();
503	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
504	>	long startTime = System.nanoTime();
505	>	try {
506	>	await(c, awaitMethod);
507	>	shouldThrow();
508	>	} catch (IllegalMonitorStateException success) {
509	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
510	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
511		}
512		}
513
514		/**
515		* Calling signal without holding lock throws IllegalMonitorStateException
516		*/
517	<	public void testSignal_IllegalMonitor() {
518	<	final ReentrantLock lock = new ReentrantLock();
517	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
518	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
519	>	public void testSignal_IMSE(boolean fair) {
520	>	final ReentrantLock lock = new ReentrantLock(fair);
521		final Condition c = lock.newCondition();
522		try {
523		c.signal();
524		shouldThrow();
525	<	}
393	<	catch (IllegalMonitorStateException success) {
394	<	}
395	<	catch (Exception ex) {
396	<	unexpectedException();
397	<	}
525	>	} catch (IllegalMonitorStateException success) {}
526		}
527
528		/**
529		* awaitNanos without a signal times out
530		*/
531	<	public void testAwaitNanos_Timeout() {
532	<	final ReentrantLock lock = new ReentrantLock();
531	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
532	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
533	>	public void testAwaitNanos_Timeout(boolean fair) {
534	>	final ReentrantLock lock = new ReentrantLock(fair);
535		final Condition c = lock.newCondition();
536	+	final long timeoutMillis = timeoutMillis();
537	+	final long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
538	+	lock.lock();
539	+	final long startTime = System.nanoTime();
540		try {
541	<	lock.lock();
542	<	long t = c.awaitNanos(100);
543	<	assertTrue(t <= 0);
544	<	lock.unlock();
545	<	}
412	<	catch (Exception ex) {
413	<	unexpectedException();
414	<	}
541	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
542	>	assertTrue(nanosRemaining <= 0);
543	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
544	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
545	>	lock.unlock();
546		}
547
548		/**
549	<	*  timed await without a signal times out
549	>	* timed await without a signal times out
550		*/
551	<	public void testAwait_Timeout() {
552	<	final ReentrantLock lock = new ReentrantLock();
551	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
552	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
553	>	public void testAwait_Timeout(boolean fair) {
554	>	final ReentrantLock lock = new ReentrantLock(fair);
555		final Condition c = lock.newCondition();
556	<	try {
557	<	lock.lock();
558	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
559	<	lock.unlock();
560	<	}
561	<	catch (Exception ex) {
562	<	unexpectedException();
563	<	}
556	>	final long timeoutMillis = timeoutMillis();
557	>	lock.lock();
558	>	final long startTime = System.nanoTime();
559	>	try {
560	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
561	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
562	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
563	>	lock.unlock();
564		}
565
566		/**
567		* awaitUntil without a signal times out
568		*/
569	<	public void testAwaitUntil_Timeout() {
570	<	final ReentrantLock lock = new ReentrantLock();
569	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
570	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
571	>	public void testAwaitUntil_Timeout(boolean fair) {
572	>	final ReentrantLock lock = new ReentrantLock(fair);
573		final Condition c = lock.newCondition();
574	<	try {
575	<	lock.lock();
576	<	java.util.Date d = new java.util.Date();
577	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
578	<	lock.unlock();
579	<	}
580	<	catch (Exception ex) {
581	<	unexpectedException();
582	<	}
574	>	lock.lock();
575	>	// We shouldn't assume that nanoTime and currentTimeMillis
576	>	// use the same time source, so don't use nanoTime here.
577	>	final java.util.Date delayedDate = delayedDate(timeoutMillis());
578	>	try {
579	>	assertFalse(c.awaitUntil(delayedDate));
580	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
581	>	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
582	>	lock.unlock();
583		}
584
585		/**
586		* await returns when signalled
587		*/
588	<	public void testAwait() {
589	<	final ReentrantLock lock = new ReentrantLock();
588	>	public void testAwait()      { testAwait(false); }
589	>	public void testAwait_fair() { testAwait(true); }
590	>	public void testAwait(boolean fair) {
591	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
592		final Condition c = lock.newCondition();
593	<	Thread t = new Thread(new Runnable() {
594	<	public void run() {
595	<	try {
596	<	lock.lock();
597	<	c.await();
598	<	lock.unlock();
599	<	}
600	<	catch(InterruptedException e) {
601	<	threadUnexpectedException();
602	<	}
603	<	}
604	<	});
605	<
606	<	try {
607	<	t.start();
608	<	Thread.sleep(SHORT_DELAY_MS);
609	<	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	<	}
593	>	final CountDownLatch locked = new CountDownLatch(1);
594	>	Thread t = newStartedThread(new CheckedRunnable() {
595	>	public void realRun() throws InterruptedException {
596	>	lock.lock();
597	>	locked.countDown();
598	>	c.await();
599	>	lock.unlock();
600	>	}});
601	>
602	>	await(locked);
603	>	lock.lock();
604	>	assertHasWaiters(lock, c, t);
605	>	c.signal();
606	>	assertHasNoWaiters(lock, c);
607	>	assertTrue(t.isAlive());
608	>	lock.unlock();
609	>	awaitTermination(t);
610		}
611
612		/**
613		* hasWaiters throws NPE if null
614		*/
615	<	public void testHasWaitersNPE() {
616	<	final ReentrantLock lock = new ReentrantLock();
615	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
616	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
617	>	public void testHasWaitersNPE(boolean fair) {
618	>	final ReentrantLock lock = new ReentrantLock(fair);
619		try {
620		lock.hasWaiters(null);
621		shouldThrow();
622	<	} catch (NullPointerException success) {
492	<	} catch (Exception ex) {
493	<	unexpectedException();
494	<	}
622	>	} catch (NullPointerException success) {}
623		}
624
625		/**
626		* getWaitQueueLength throws NPE if null
627		*/
628	<	public void testGetWaitQueueLengthNPE() {
629	<	final ReentrantLock lock = new ReentrantLock();
628	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
629	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
630	>	public void testGetWaitQueueLengthNPE(boolean fair) {
631	>	final ReentrantLock lock = new ReentrantLock(fair);
632		try {
633		lock.getWaitQueueLength(null);
634		shouldThrow();
635	<	} catch (NullPointerException success) {
506	<	} catch (Exception ex) {
507	<	unexpectedException();
508	<	}
635	>	} catch (NullPointerException success) {}
636		}
637
511	–
638		/**
639		* getWaitingThreads throws NPE if null
640		*/
641	<	public void testGetWaitingThreadsNPE() {
642	<	final PublicReentrantLock lock = new PublicReentrantLock();
641	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
642	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
643	>	public void testGetWaitingThreadsNPE(boolean fair) {
644	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
645		try {
646		lock.getWaitingThreads(null);
647		shouldThrow();
648	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
648	>	} catch (NullPointerException success) {}
649		}
650
526	–
651		/**
652	<	* hasWaiters throws IAE if not owned
652	>	* hasWaiters throws IllegalArgumentException if not owned
653		*/
654	<	public void testHasWaitersIAE() {
655	<	final ReentrantLock lock = new ReentrantLock();
656	<	final Condition c = (lock.newCondition());
657	<	final ReentrantLock lock2 = new ReentrantLock();
654	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
655	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
656	>	public void testHasWaitersIAE(boolean fair) {
657	>	final ReentrantLock lock = new ReentrantLock(fair);
658	>	final Condition c = lock.newCondition();
659	>	final ReentrantLock lock2 = new ReentrantLock(fair);
660		try {
661		lock2.hasWaiters(c);
662		shouldThrow();
663	<	} catch (IllegalArgumentException success) {
538	<	} catch (Exception ex) {
539	<	unexpectedException();
540	<	}
663	>	} catch (IllegalArgumentException success) {}
664		}
665
666		/**
667	<	* hasWaiters throws IMSE if not locked
667	>	* hasWaiters throws IllegalMonitorStateException if not locked
668		*/
669	<	public void testHasWaitersIMSE() {
670	<	final ReentrantLock lock = new ReentrantLock();
671	<	final Condition c = (lock.newCondition());
669	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
670	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
671	>	public void testHasWaitersIMSE(boolean fair) {
672	>	final ReentrantLock lock = new ReentrantLock(fair);
673	>	final Condition c = lock.newCondition();
674		try {
675		lock.hasWaiters(c);
676		shouldThrow();
677	<	} catch (IllegalMonitorStateException success) {
553	<	} catch (Exception ex) {
554	<	unexpectedException();
555	<	}
677	>	} catch (IllegalMonitorStateException success) {}
678		}
679
558	–
680		/**
681	<	* getWaitQueueLength throws IAE if not owned
681	>	* getWaitQueueLength throws IllegalArgumentException if not owned
682		*/
683	<	public void testGetWaitQueueLengthIAE() {
684	<	final ReentrantLock lock = new ReentrantLock();
685	<	final Condition c = (lock.newCondition());
686	<	final ReentrantLock lock2 = new ReentrantLock();
683	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
684	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
685	>	public void testGetWaitQueueLengthIAE(boolean fair) {
686	>	final ReentrantLock lock = new ReentrantLock(fair);
687	>	final Condition c = lock.newCondition();
688	>	final ReentrantLock lock2 = new ReentrantLock(fair);
689		try {
690		lock2.getWaitQueueLength(c);
691		shouldThrow();
692	<	} catch (IllegalArgumentException success) {
570	<	} catch (Exception ex) {
571	<	unexpectedException();
572	<	}
692	>	} catch (IllegalArgumentException success) {}
693		}
694
695		/**
696	<	* getWaitQueueLength throws IMSE if not locked
696	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
697		*/
698	<	public void testGetWaitQueueLengthIMSE() {
699	<	final ReentrantLock lock = new ReentrantLock();
700	<	final Condition c = (lock.newCondition());
698	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
699	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
700	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
701	>	final ReentrantLock lock = new ReentrantLock(fair);
702	>	final Condition c = lock.newCondition();
703		try {
704		lock.getWaitQueueLength(c);
705		shouldThrow();
706	<	} catch (IllegalMonitorStateException success) {
585	<	} catch (Exception ex) {
586	<	unexpectedException();
587	<	}
706	>	} catch (IllegalMonitorStateException success) {}
707		}
708
590	–
709		/**
710	<	* getWaitingThreads throws IAE if not owned
710	>	* getWaitingThreads throws IllegalArgumentException if not owned
711		*/
712	<	public void testGetWaitingThreadsIAE() {
713	<	final PublicReentrantLock lock = new PublicReentrantLock();
714	<	final Condition c = (lock.newCondition());
715	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
712	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
713	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
714	>	public void testGetWaitingThreadsIAE(boolean fair) {
715	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
716	>	final Condition c = lock.newCondition();
717	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
718		try {
719		lock2.getWaitingThreads(c);
720		shouldThrow();
721	<	} catch (IllegalArgumentException success) {
602	<	} catch (Exception ex) {
603	<	unexpectedException();
604	<	}
721	>	} catch (IllegalArgumentException success) {}
722		}
723
724		/**
725	<	* getWaitingThreads throws IMSE if not locked
725	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
726		*/
727	<	public void testGetWaitingThreadsIMSE() {
728	<	final PublicReentrantLock lock = new PublicReentrantLock();
729	<	final Condition c = (lock.newCondition());
727	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
728	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
729	>	public void testGetWaitingThreadsIMSE(boolean fair) {
730	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
731	>	final Condition c = lock.newCondition();
732		try {
733		lock.getWaitingThreads(c);
734		shouldThrow();
735	<	} catch (IllegalMonitorStateException success) {
617	<	} catch (Exception ex) {
618	<	unexpectedException();
619	<	}
735	>	} catch (IllegalMonitorStateException success) {}
736		}
737
622	–
623	–
738		/**
739		* hasWaiters returns true when a thread is waiting, else false
740		*/
741	<	public void testHasWaiters() {
742	<	final ReentrantLock lock = new ReentrantLock();
741	>	public void testHasWaiters()      { testHasWaiters(false); }
742	>	public void testHasWaiters_fair() { testHasWaiters(true); }
743	>	public void testHasWaiters(boolean fair) {
744	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
745		final Condition c = lock.newCondition();
746	<	Thread t = new Thread(new Runnable() {
747	<	public void run() {
748	<	try {
749	<	lock.lock();
750	<	threadAssertFalse(lock.hasWaiters(c));
751	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
752	<	c.await();
753	<	lock.unlock();
754	<	}
755	<	catch(InterruptedException e) {
756	<	threadUnexpectedException();
757	<	}
758	<	}
759	<	});
760	<
761	<	try {
762	<	t.start();
763	<	Thread.sleep(SHORT_DELAY_MS);
764	<	lock.lock();
765	<	assertTrue(lock.hasWaiters(c));
766	<	assertEquals(1, lock.getWaitQueueLength(c));
767	<	c.signal();
768	<	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	<	}
746	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
747	>	Thread t = newStartedThread(new CheckedRunnable() {
748	>	public void realRun() throws InterruptedException {
749	>	lock.lock();
750	>	assertHasNoWaiters(lock, c);
751	>	assertFalse(lock.hasWaiters(c));
752	>	pleaseSignal.countDown();
753	>	c.await();
754	>	assertHasNoWaiters(lock, c);
755	>	assertFalse(lock.hasWaiters(c));
756	>	lock.unlock();
757	>	}});
758	>
759	>	await(pleaseSignal);
760	>	lock.lock();
761	>	assertHasWaiters(lock, c, t);
762	>	assertTrue(lock.hasWaiters(c));
763	>	c.signal();
764	>	assertHasNoWaiters(lock, c);
765	>	assertFalse(lock.hasWaiters(c));
766	>	lock.unlock();
767	>	awaitTermination(t);
768	>	assertHasNoWaiters(lock, c);
769		}
770
771		/**
772		* getWaitQueueLength returns number of waiting threads
773		*/
774	<	public void testGetWaitQueueLength() {
775	<	final ReentrantLock lock = new ReentrantLock();
774	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
775	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
776	>	public void testGetWaitQueueLength(boolean fair) {
777	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
778		final Condition c = lock.newCondition();
779	<	Thread t1 = new Thread(new Runnable() {
780	<	public void run() {
781	<	try {
782	<	lock.lock();
783	<	threadAssertFalse(lock.hasWaiters(c));
784	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
785	<	c.await();
786	<	lock.unlock();
787	<	}
788	<	catch(InterruptedException e) {
789	<	threadUnexpectedException();
790	<	}
791	<	}
792	<	});
793	<
794	<	Thread t2 = new Thread(new Runnable() {
795	<	public void run() {
796	<	try {
797	<	lock.lock();
798	<	threadAssertTrue(lock.hasWaiters(c));
799	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
800	<	c.await();
801	<	lock.unlock();
802	<	}
803	<	catch(InterruptedException e) {
804	<	threadUnexpectedException();
805	<	}
806	<	}
807	<	});
779	>	final CountDownLatch locked1 = new CountDownLatch(1);
780	>	final CountDownLatch locked2 = new CountDownLatch(1);
781	>	Thread t1 = new Thread(new CheckedRunnable() {
782	>	public void realRun() throws InterruptedException {
783	>	lock.lock();
784	>	assertFalse(lock.hasWaiters(c));
785	>	assertEquals(0, lock.getWaitQueueLength(c));
786	>	locked1.countDown();
787	>	c.await();
788	>	lock.unlock();
789	>	}});
790	>
791	>	Thread t2 = new Thread(new CheckedRunnable() {
792	>	public void realRun() throws InterruptedException {
793	>	lock.lock();
794	>	assertTrue(lock.hasWaiters(c));
795	>	assertEquals(1, lock.getWaitQueueLength(c));
796	>	locked2.countDown();
797	>	c.await();
798	>	lock.unlock();
799	>	}});
800	>
801	>	lock.lock();
802	>	assertEquals(0, lock.getWaitQueueLength(c));
803	>	lock.unlock();
804	>
805	>	t1.start();
806	>	await(locked1);
807	>
808	>	lock.lock();
809	>	assertHasWaiters(lock, c, t1);
810	>	assertEquals(1, lock.getWaitQueueLength(c));
811	>	lock.unlock();
812	>
813	>	t2.start();
814	>	await(locked2);
815	>
816	>	lock.lock();
817	>	assertHasWaiters(lock, c, t1, t2);
818	>	assertEquals(2, lock.getWaitQueueLength(c));
819	>	c.signalAll();
820	>	assertHasNoWaiters(lock, c);
821	>	lock.unlock();
822
823	<	try {
824	<	t1.start();
825	<	Thread.sleep(SHORT_DELAY_MS);
826	<	t2.start();
706	<	Thread.sleep(SHORT_DELAY_MS);
707	<	lock.lock();
708	<	assertTrue(lock.hasWaiters(c));
709	<	assertEquals(2, lock.getWaitQueueLength(c));
710	<	c.signalAll();
711	<	lock.unlock();
712	<	Thread.sleep(SHORT_DELAY_MS);
713	<	lock.lock();
714	<	assertFalse(lock.hasWaiters(c));
715	<	assertEquals(0, lock.getWaitQueueLength(c));
716	<	lock.unlock();
717	<	t1.join(SHORT_DELAY_MS);
718	<	t2.join(SHORT_DELAY_MS);
719	<	assertFalse(t1.isAlive());
720	<	assertFalse(t2.isAlive());
721	<	}
722	<	catch (Exception ex) {
723	<	unexpectedException();
724	<	}
823	>	awaitTermination(t1);
824	>	awaitTermination(t2);
825	>
826	>	assertHasNoWaiters(lock, c);
827		}
828
829		/**
830		* getWaitingThreads returns only and all waiting threads
831		*/
832	<	public void testGetWaitingThreads() {
833	<	final PublicReentrantLock lock = new PublicReentrantLock();
832	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
833	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
834	>	public void testGetWaitingThreads(boolean fair) {
835	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
836		final Condition c = lock.newCondition();
837	<	Thread t1 = new Thread(new Runnable() {
838	<	public void run() {
839	<	try {
840	<	lock.lock();
841	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
842	<	c.await();
843	<	lock.unlock();
844	<	}
845	<	catch(InterruptedException e) {
846	<	threadUnexpectedException();
847	<	}
848	<	}
849	<	});
850	<
851	<	Thread t2 = new Thread(new Runnable() {
852	<	public void run() {
853	<	try {
854	<	lock.lock();
855	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
856	<	c.await();
857	<	lock.unlock();
858	<	}
859	<	catch(InterruptedException e) {
860	<	threadUnexpectedException();
861	<	}
862	<	}
863	<	});
864	<
865	<	try {
866	<	lock.lock();
867	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
868	<	lock.unlock();
869	<	t1.start();
870	<	Thread.sleep(SHORT_DELAY_MS);
871	<	t2.start();
872	<	Thread.sleep(SHORT_DELAY_MS);
873	<	lock.lock();
874	<	assertTrue(lock.hasWaiters(c));
875	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
876	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
877	<	c.signalAll();
878	<	lock.unlock();
879	<	Thread.sleep(SHORT_DELAY_MS);
880	<	lock.lock();
881	<	assertFalse(lock.hasWaiters(c));
882	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
883	<	lock.unlock();
884	<	t1.join(SHORT_DELAY_MS);
885	<	t2.join(SHORT_DELAY_MS);
886	<	assertFalse(t1.isAlive());
887	<	assertFalse(t2.isAlive());
888	<	}
889	<	catch (Exception ex) {
890	<	unexpectedException();
891	<	}
892	<	}
893	<
894	<
895	<
896	<	/**
897	<	* awaitUninterruptibly doesn't abort on interrupt
898	<	*/
899	<	public void testAwaitUninterruptibly() {
900	<	final ReentrantLock lock = new ReentrantLock();
837	>	final CountDownLatch locked1 = new CountDownLatch(1);
838	>	final CountDownLatch locked2 = new CountDownLatch(1);
839	>	Thread t1 = new Thread(new CheckedRunnable() {
840	>	public void realRun() throws InterruptedException {
841	>	lock.lock();
842	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
843	>	locked1.countDown();
844	>	c.await();
845	>	lock.unlock();
846	>	}});
847	>
848	>	Thread t2 = new Thread(new CheckedRunnable() {
849	>	public void realRun() throws InterruptedException {
850	>	lock.lock();
851	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
852	>	locked2.countDown();
853	>	c.await();
854	>	lock.unlock();
855	>	}});
856	>
857	>	lock.lock();
858	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
859	>	lock.unlock();
860	>
861	>	t1.start();
862	>	await(locked1);
863	>
864	>	lock.lock();
865	>	assertHasWaiters(lock, c, t1);
866	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
867	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
868	>	assertEquals(1, lock.getWaitingThreads(c).size());
869	>	lock.unlock();
870	>
871	>	t2.start();
872	>	await(locked2);
873	>
874	>	lock.lock();
875	>	assertHasWaiters(lock, c, t1, t2);
876	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
877	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
878	>	assertEquals(2, lock.getWaitingThreads(c).size());
879	>	c.signalAll();
880	>	assertHasNoWaiters(lock, c);
881	>	lock.unlock();
882	>
883	>	awaitTermination(t1);
884	>	awaitTermination(t2);
885	>
886	>	assertHasNoWaiters(lock, c);
887	>	}
888	>
889	>	/**
890	>	* awaitUninterruptibly is uninterruptible
891	>	*/
892	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
893	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
894	>	public void testAwaitUninterruptibly(boolean fair) {
895	>	final ReentrantLock lock = new ReentrantLock(fair);
896	>	final Condition condition = lock.newCondition();
897	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
898	>
899	>	Thread t1 = newStartedThread(new CheckedRunnable() {
900	>	public void realRun() {
901	>	// Interrupt before awaitUninterruptibly
902	>	lock.lock();
903	>	pleaseInterrupt.countDown();
904	>	Thread.currentThread().interrupt();
905	>	condition.awaitUninterruptibly();
906	>	assertTrue(Thread.interrupted());
907	>	lock.unlock();
908	>	}});
909	>
910	>	Thread t2 = newStartedThread(new CheckedRunnable() {
911	>	public void realRun() {
912	>	// Interrupt during awaitUninterruptibly
913	>	lock.lock();
914	>	pleaseInterrupt.countDown();
915	>	condition.awaitUninterruptibly();
916	>	assertTrue(Thread.interrupted());
917	>	lock.unlock();
918	>	}});
919	>
920	>	await(pleaseInterrupt);
921	>	t2.interrupt();
922	>	lock.lock();
923	>	lock.unlock();
924	>	assertThreadBlocks(t1, Thread.State.WAITING);
925	>	assertThreadBlocks(t2, Thread.State.WAITING);
926	>
927	>	lock.lock();
928	>	condition.signalAll();
929	>	lock.unlock();
930	>
931	>	awaitTermination(t1);
932	>	awaitTermination(t2);
933	>	}
934	>
935	>	/**
936	>	* await/awaitNanos/awaitUntil is interruptible
937	>	*/
938	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
939	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
940	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
941	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
942	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
943	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
944	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
945	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
946	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
947	>	final PublicReentrantLock lock =
948	>	new PublicReentrantLock(fair);
949		final Condition c = lock.newCondition();
950	<	Thread t = new Thread(new Runnable() {
951	<	public void run() {
952	<	lock.lock();
953	<	c.awaitUninterruptibly();
950	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
952	>	public void realRun() throws InterruptedException {
953	>	lock.lock();
954	>	assertLockedByMoi(lock);
955	>	assertHasNoWaiters(lock, c);
956	>	pleaseInterrupt.countDown();
957	>	try {
958	>	await(c, awaitMethod);
959	>	} finally {
960	>	assertLockedByMoi(lock);
961	>	assertHasNoWaiters(lock, c);
962		lock.unlock();
963	<	}
964	<	});
965	<
966	<	try {
967	<	t.start();
968	<	Thread.sleep(SHORT_DELAY_MS);
969	<	t.interrupt();
970	<	lock.lock();
971	<	c.signal();
812	<	lock.unlock();
813	<	assert(t.isInterrupted());
814	<	t.join(SHORT_DELAY_MS);
815	<	assertFalse(t.isAlive());
816	<	}
817	<	catch (Exception ex) {
818	<	unexpectedException();
819	<	}
963	>	assertFalse(Thread.interrupted());
964	>	}
965	>	}});
966	>
967	>	await(pleaseInterrupt);
968	>	assertHasWaiters(lock, c, t);
969	>	t.interrupt();
970	>	awaitTermination(t);
971	>	assertNotLocked(lock);
972		}
973
974		/**
975	<	* await is interruptible
975	>	* signalAll wakes up all threads
976		*/
977	<	public void testAwait_Interrupt() {
978	<	final ReentrantLock lock = new ReentrantLock();
977	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
978	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
979	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
980	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
981	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
982	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
983	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
984	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
985	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
986	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
987		final Condition c = lock.newCondition();
988	<	Thread t = new Thread(new Runnable() {
989	<	public void run() {
990	<	try {
991	<	lock.lock();
992	<	c.await();
993	<	lock.unlock();
994	<	threadShouldThrow();
995	<	}
996	<	catch(InterruptedException success) {
997	<	}
998	<	}
999	<	});
1000	<
1001	<	try {
1002	<	t.start();
1003	<	Thread.sleep(SHORT_DELAY_MS);
1004	<	t.interrupt();
1005	<	t.join(SHORT_DELAY_MS);
1006	<	assertFalse(t.isAlive());
1007	<	}
1008	<	catch (Exception ex) {
849	<	unexpectedException();
850	<	}
988	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
989	>	class Awaiter extends CheckedRunnable {
990	>	public void realRun() throws InterruptedException {
991	>	lock.lock();
992	>	pleaseSignal.countDown();
993	>	await(c, awaitMethod);
994	>	lock.unlock();
995	>	}
996	>	}
997	>
998	>	Thread t1 = newStartedThread(new Awaiter());
999	>	Thread t2 = newStartedThread(new Awaiter());
1000	>
1001	>	await(pleaseSignal);
1002	>	lock.lock();
1003	>	assertHasWaiters(lock, c, t1, t2);
1004	>	c.signalAll();
1005	>	assertHasNoWaiters(lock, c);
1006	>	lock.unlock();
1007	>	awaitTermination(t1);
1008	>	awaitTermination(t2);
1009		}
1010
1011		/**
1012	<	* awaitNanos is interruptible
1013	<	*/
1014	<	public void testAwaitNanos_Interrupt() {
1015	<	final ReentrantLock lock = new ReentrantLock();
1012	>	* signal wakes up waiting threads in FIFO order
1013	>	*/
1014	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1015	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1016	>	public void testSignalWakesFifo(boolean fair) {
1017	>	final PublicReentrantLock lock =
1018	>	new PublicReentrantLock(fair);
1019		final Condition c = lock.newCondition();
1020	<	Thread t = new Thread(new Runnable() {
1021	<	public void run() {
1022	<	try {
1023	<	lock.lock();
1024	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
1025	<	lock.unlock();
1026	<	threadShouldThrow();
1027	<	}
1028	<	catch(InterruptedException success) {
1029	<	}
1030	<	}
1031	<	});
1032	<
1033	<	try {
1034	<	t.start();
1035	<	Thread.sleep(SHORT_DELAY_MS);
1036	<	t.interrupt();
1037	<	t.join(SHORT_DELAY_MS);
1038	<	assertFalse(t.isAlive());
1039	<	}
1040	<	catch (Exception ex) {
1041	<	unexpectedException();
1042	<	}
1020	>	final CountDownLatch locked1 = new CountDownLatch(1);
1021	>	final CountDownLatch locked2 = new CountDownLatch(1);
1022	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1023	>	public void realRun() throws InterruptedException {
1024	>	lock.lock();
1025	>	locked1.countDown();
1026	>	c.await();
1027	>	lock.unlock();
1028	>	}});
1029	>
1030	>	await(locked1);
1031	>
1032	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1033	>	public void realRun() throws InterruptedException {
1034	>	lock.lock();
1035	>	locked2.countDown();
1036	>	c.await();
1037	>	lock.unlock();
1038	>	}});
1039	>
1040	>	await(locked2);
1041	>
1042	>	lock.lock();
1043	>	assertHasWaiters(lock, c, t1, t2);
1044	>	assertFalse(lock.hasQueuedThreads());
1045	>	c.signal();
1046	>	assertHasWaiters(lock, c, t2);
1047	>	assertTrue(lock.hasQueuedThread(t1));
1048	>	assertFalse(lock.hasQueuedThread(t2));
1049	>	c.signal();
1050	>	assertHasNoWaiters(lock, c);
1051	>	assertTrue(lock.hasQueuedThread(t1));
1052	>	assertTrue(lock.hasQueuedThread(t2));
1053	>	lock.unlock();
1054	>	awaitTermination(t1);
1055	>	awaitTermination(t2);
1056		}
1057
1058		/**
1059	<	* awaitUntil is interruptible
1060	<	*/
1061	<	public void testAwaitUntil_Interrupt() {
1062	<	final ReentrantLock lock = new ReentrantLock();
1059	>	* await after multiple reentrant locking preserves lock count
1060	>	*/
1061	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1062	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1063	>	public void testAwaitLockCount(boolean fair) {
1064	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1065		final Condition c = lock.newCondition();
1066	<	Thread t = new Thread(new Runnable() {
1067	<	public void run() {
1068	<	try {
1069	<	lock.lock();
1070	<	java.util.Date d = new java.util.Date();
1071	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1072	<	lock.unlock();
1073	<	threadShouldThrow();
1074	<	}
1075	<	catch(InterruptedException success) {
1076	<	}
1077	<	}
1078	<	});
1079	<
1080	<	try {
1081	<	t.start();
1082	<	Thread.sleep(SHORT_DELAY_MS);
1083	<	t.interrupt();
1084	<	t.join(SHORT_DELAY_MS);
1085	<	assertFalse(t.isAlive());
1086	<	}
1087	<	catch (Exception ex) {
1088	<	unexpectedException();
1089	<	}
1066	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1067	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1068	>	public void realRun() throws InterruptedException {
1069	>	lock.lock();
1070	>	assertLockedByMoi(lock);
1071	>	assertEquals(1, lock.getHoldCount());
1072	>	pleaseSignal.countDown();
1073	>	c.await();
1074	>	assertLockedByMoi(lock);
1075	>	assertEquals(1, lock.getHoldCount());
1076	>	lock.unlock();
1077	>	}});
1078	>
1079	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1080	>	public void realRun() throws InterruptedException {
1081	>	lock.lock();
1082	>	lock.lock();
1083	>	assertLockedByMoi(lock);
1084	>	assertEquals(2, lock.getHoldCount());
1085	>	pleaseSignal.countDown();
1086	>	c.await();
1087	>	assertLockedByMoi(lock);
1088	>	assertEquals(2, lock.getHoldCount());
1089	>	lock.unlock();
1090	>	lock.unlock();
1091	>	}});
1092	>
1093	>	await(pleaseSignal);
1094	>	lock.lock();
1095	>	assertHasWaiters(lock, c, t1, t2);
1096	>	assertEquals(1, lock.getHoldCount());
1097	>	c.signalAll();
1098	>	assertHasNoWaiters(lock, c);
1099	>	lock.unlock();
1100	>	awaitTermination(t1);
1101	>	awaitTermination(t2);
1102		}
1103
1104		/**
1105	<	* signalAll wakes up all threads
1105	>	* A serialized lock deserializes as unlocked
1106		*/
1107	<	public void testSignalAll() {
1108	<	final ReentrantLock lock = new ReentrantLock();
1109	<	final Condition c = lock.newCondition();
1110	<	Thread t1 = new Thread(new Runnable() {
1111	<	public void run() {
1112	<	try {
1113	<	lock.lock();
1114	<	c.await();
1115	<	lock.unlock();
1116	<	}
1117	<	catch(InterruptedException e) {
1118	<	threadUnexpectedException();
1119	<	}
1120	<	}
1121	<	});
1122	<
1123	<	Thread t2 = new Thread(new Runnable() {
1124	<	public void run() {
1125	<	try {
1126	<	lock.lock();
1127	<	c.await();
1128	<	lock.unlock();
1129	<	}
1130	<	catch(InterruptedException e) {
1131	<	threadUnexpectedException();
1132	<	}
1133	<	}
1134	<	});
1107	>	public void testSerialization()      { testSerialization(false); }
1108	>	public void testSerialization_fair() { testSerialization(true); }
1109	>	public void testSerialization(boolean fair) {
1110	>	final ReentrantLock lock = new ReentrantLock(fair);
1111	>	lock.lock();
1112	>
1113	>	ReentrantLock clone = serialClone(lock);
1114	>	assertEquals(lock.isFair(), clone.isFair());
1115	>	assertTrue(lock.isLocked());
1116	>	assertFalse(clone.isLocked());
1117	>	assertEquals(1, lock.getHoldCount());
1118	>	assertEquals(0, clone.getHoldCount());
1119	>	clone.lock();
1120	>	clone.lock();
1121	>	assertTrue(clone.isLocked());
1122	>	assertEquals(2, clone.getHoldCount());
1123	>	assertEquals(1, lock.getHoldCount());
1124	>	clone.unlock();
1125	>	clone.unlock();
1126	>	assertTrue(lock.isLocked());
1127	>	assertFalse(clone.isLocked());
1128	>	}
1129	>
1130	>	/**
1131	>	* toString indicates current lock state
1132	>	*/
1133	>	public void testToString()      { testToString(false); }
1134	>	public void testToString_fair() { testToString(true); }
1135	>	public void testToString(boolean fair) {
1136	>	final ReentrantLock lock = new ReentrantLock(fair);
1137	>	assertTrue(lock.toString().contains("Unlocked"));
1138	>	lock.lock();
1139	>	assertTrue(lock.toString().contains("Locked by"));
1140	>	lock.unlock();
1141	>	assertTrue(lock.toString().contains("Unlocked"));
1142	>	}
1143	>
1144	>	/**
1145	>	* Tests scenario for JDK-8187408
1146	>	* AbstractQueuedSynchronizer wait queue corrupted when thread awaits without holding the lock
1147	>	*/
1148	>	public void testBug8187408() throws InterruptedException {
1149	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
1150	>	final AwaitMethod awaitMethod = randomAwaitMethod();
1151	>	final int nThreads = rnd.nextInt(2, 10);
1152	>	final ReentrantLock lock = new ReentrantLock();
1153	>	final Condition cond = lock.newCondition();
1154	>	final CountDownLatch done = new CountDownLatch(nThreads);
1155	>	final ArrayList<Thread> threads = new ArrayList<>();
1156	>
1157	>	Runnable rogue = () -> {
1158	>	while (done.getCount() > 0) {
1159	>	try {
1160	>	// call await without holding lock?!
1161	>	await(cond, awaitMethod);
1162	>	throw new AssertionError("should throw");
1163	>	}
1164	>	catch (IllegalMonitorStateException expected) {}
1165	>	catch (Throwable fail) { threadUnexpectedException(fail); }}};
1166	>	Thread rogueThread = new Thread(rogue, "rogue");
1167	>	threads.add(rogueThread);
1168	>	rogueThread.start();
1169
1170	<	try {
949	<	t1.start();
950	<	t2.start();
951	<	Thread.sleep(SHORT_DELAY_MS);
1170	>	Runnable waiter = () -> {
1171		lock.lock();
1172	<	c.signalAll();
1172	>	try {
1173	>	done.countDown();
1174	>	cond.await();
1175	>	} catch (Throwable fail) {
1176	>	threadUnexpectedException(fail);
1177	>	} finally {
1178	>	lock.unlock();
1179	>	}};
1180	>	for (int i = 0; i < nThreads; i++) {
1181	>	Thread thread = new Thread(waiter, "waiter");
1182	>	threads.add(thread);
1183	>	thread.start();
1184	>	}
1185	>
1186	>	assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS));
1187	>	lock.lock();
1188	>	try {
1189	>	assertEquals(nThreads, lock.getWaitQueueLength(cond));
1190	>	} finally {
1191	>	cond.signalAll();
1192		lock.unlock();
955	–	t1.join(SHORT_DELAY_MS);
956	–	t2.join(SHORT_DELAY_MS);
957	–	assertFalse(t1.isAlive());
958	–	assertFalse(t2.isAlive());
1193		}
1194	<	catch (Exception ex) {
1195	<	unexpectedException();
1194	>	for (Thread thread : threads) {
1195	>	thread.join(LONG_DELAY_MS);
1196	>	assertFalse(thread.isAlive());
1197		}
1198		}
964	–
965	–	/**
966	–	* A serialized lock deserializes as unlocked
967	–	*/
968	–	public void testSerialization() {
969	–	ReentrantLock l = new ReentrantLock();
970	–	l.lock();
971	–	l.unlock();
972	–
973	–	try {
974	–	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
975	–	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
976	–	out.writeObject(l);
977	–	out.close();
978	–
979	–	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
980	–	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
981	–	ReentrantLock r = (ReentrantLock) in.readObject();
982	–	r.lock();
983	–	r.unlock();
984	–	} catch(Exception e){
985	–	e.printStackTrace();
986	–	unexpectedException();
987	–	}
988	–	}
989	–
1199		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines