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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.19 by dl, Sun Jan 25 13:25:28 2004 UTC vs.
Revision 1.66 by jsr166, Mon Jul 17 21:01:30 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.Arrays;
12	+	import java.util.Collection;
13	+	import java.util.HashSet;
14	+	import java.util.concurrent.CountDownLatch;
15	+	import java.util.concurrent.CyclicBarrier;
16	+	import java.util.concurrent.locks.Condition;
17	+	import java.util.concurrent.locks.ReentrantLock;
18	+
19	+	import junit.framework.AssertionFailedError;
20	+	import junit.framework.Test;
21	+	import junit.framework.TestSuite;
22	+
23	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
24		public class ReentrantLockTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run (suite());
26	>	main(suite(), args);
27		}
28		public static Test suite() {
29	<	return new TestSuite(ReentrantLockTest.class);
29	>	return new TestSuite(ReentrantLockTest.class);
30		}
31
32		/**
33	<	* A runnable calling lockInterruptibly
33	>	* A checked runnable calling lockInterruptibly
34		*/
35	<	class InterruptibleLockRunnable implements Runnable {
35	>	class InterruptibleLockRunnable extends CheckedRunnable {
36		final ReentrantLock lock;
37	<	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
38	<	public void run() {
39	<	try {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
37	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
38	>	public void realRun() throws InterruptedException {
39	>	lock.lockInterruptibly();
40		}
41		}
42
36	–
43		/**
44	<	* A runnable calling lockInterruptibly that expects to be
44	>	* A checked runnable calling lockInterruptibly that expects to be
45		* interrupted
46		*/
47	<	class InterruptedLockRunnable implements Runnable {
47	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
48		final ReentrantLock lock;
49	<	InterruptedLockRunnable(ReentrantLock l) { lock = l; }
50	<	public void run() {
51	<	try {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
49	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
50	>	public void realRun() throws InterruptedException {
51	>	lock.lockInterruptibly();
52		}
53		}
54
#	Line 54 | Line 57 | public class ReentrantLockTest extends J
57		*/
58		static class PublicReentrantLock extends ReentrantLock {
59		PublicReentrantLock() { super(); }
60	<	public Collection<Thread> getQueuedThreads() {
61	<	return super.getQueuedThreads();
60	>	PublicReentrantLock(boolean fair) { super(fair); }
61	>	public Thread getOwner() {
62	>	return super.getOwner();
63	>	}
64	>	public Collection<Thread> getQueuedThreads() {
65	>	return super.getQueuedThreads();
66		}
67	<	public Collection<Thread> getWaitingThreads(Condition c) {
68	<	return super.getWaitingThreads(c);
67	>	public Collection<Thread> getWaitingThreads(Condition c) {
68	>	return super.getWaitingThreads(c);
69		}
70	+	}
71
72	+	/**
73	+	* Releases write lock, checking that it had a hold count of 1.
74	+	*/
75	+	void releaseLock(PublicReentrantLock lock) {
76	+	assertLockedByMoi(lock);
77	+	lock.unlock();
78	+	assertFalse(lock.isHeldByCurrentThread());
79	+	assertNotLocked(lock);
80	+	}
81
82	+	/**
83	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
84	+	*/
85	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
86	+	long startTime = System.nanoTime();
87	+	while (!lock.hasQueuedThread(t)) {
88	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
89	+	throw new AssertionFailedError("timed out");
90	+	Thread.yield();
91	+	}
92	+	assertTrue(t.isAlive());
93	+	assertNotSame(t, lock.getOwner());
94		}
95
96		/**
97	<	* Constructor sets given fairness
97	>	* Checks that lock is not locked.
98		*/
99	<	public void testConstructor() {
100	<	ReentrantLock rl = new ReentrantLock();
101	<	assertFalse(rl.isFair());
102	<	ReentrantLock r2 = new ReentrantLock(true);
103	<	assertTrue(r2.isFair());
99	>	void assertNotLocked(PublicReentrantLock lock) {
100	>	assertFalse(lock.isLocked());
101	>	assertFalse(lock.isHeldByCurrentThread());
102	>	assertNull(lock.getOwner());
103	>	assertEquals(0, lock.getHoldCount());
104		}
105
106		/**
107	<	* locking an unlocked lock succeeds
107	>	* Checks that lock is locked by the given thread.
108		*/
109	<	public void testLock() {
110	<	ReentrantLock rl = new ReentrantLock();
111	<	rl.lock();
112	<	assertTrue(rl.isLocked());
113	<	rl.unlock();
109	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
110	>	assertTrue(lock.isLocked());
111	>	assertSame(t, lock.getOwner());
112	>	assertEquals(t == Thread.currentThread(),
113	>	lock.isHeldByCurrentThread());
114	>	assertEquals(t == Thread.currentThread(),
115	>	lock.getHoldCount() > 0);
116		}
117
118		/**
119	<	* locking an unlocked fair lock succeeds
119	>	* Checks that lock is locked by the current thread.
120		*/
121	<	public void testFairLock() {
122	<	ReentrantLock rl = new ReentrantLock(true);
92	<	rl.lock();
93	<	assertTrue(rl.isLocked());
94	<	rl.unlock();
121	>	void assertLockedByMoi(PublicReentrantLock lock) {
122	>	assertLockedBy(lock, Thread.currentThread());
123		}
124
125		/**
126	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
126	>	* Checks that condition c has no waiters.
127		*/
128	<	public void testUnlock_IllegalMonitorStateException() {
129	<	ReentrantLock rl = new ReentrantLock();
130	<	try {
103	<	rl.unlock();
104	<	shouldThrow();
128	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
129	>	assertHasWaiters(lock, c, new Thread[] {});
130	>	}
131
132	<	} catch(IllegalMonitorStateException success){}
132	>	/**
133	>	* Checks that condition c has exactly the given waiter threads.
134	>	*/
135	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
136	>	Thread... threads) {
137	>	lock.lock();
138	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
139	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
140	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
141	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
142	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
143	>	new HashSet<Thread>(Arrays.asList(threads)));
144	>	lock.unlock();
145		}
146
147	+	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
148	+
149		/**
150	<	* tryLock on an unlocked lock succeeds
150	>	* Awaits condition "indefinitely" using the specified AwaitMethod.
151		*/
152	<	public void testTryLock() {
153	<	ReentrantLock rl = new ReentrantLock();
154	<	assertTrue(rl.tryLock());
155	<	assertTrue(rl.isLocked());
156	<	rl.unlock();
152	>	void await(Condition c, AwaitMethod awaitMethod)
153	>	throws InterruptedException {
154	>	long timeoutMillis = 2 * LONG_DELAY_MS;
155	>	switch (awaitMethod) {
156	>	case await:
157	>	c.await();
158	>	break;
159	>	case awaitTimed:
160	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
161	>	break;
162	>	case awaitNanos:
163	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
164	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
165	>	assertTrue(nanosRemaining > timeoutNanos / 2);
166	>	assertTrue(nanosRemaining <= timeoutNanos);
167	>	break;
168	>	case awaitUntil:
169	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
170	>	break;
171	>	default:
172	>	throw new AssertionError();
173	>	}
174		}
175
176	+	/**
177	+	* Constructor sets given fairness, and is in unlocked state
178	+	*/
179	+	public void testConstructor() {
180	+	PublicReentrantLock lock;
181	+
182	+	lock = new PublicReentrantLock();
183	+	assertFalse(lock.isFair());
184	+	assertNotLocked(lock);
185	+
186	+	lock = new PublicReentrantLock(true);
187	+	assertTrue(lock.isFair());
188	+	assertNotLocked(lock);
189	+
190	+	lock = new PublicReentrantLock(false);
191	+	assertFalse(lock.isFair());
192	+	assertNotLocked(lock);
193	+	}
194
195		/**
196	<	* hasQueuedThreads reports whether there are waiting threads
196	>	* locking an unlocked lock succeeds
197		*/
198	<	public void testhasQueuedThreads() {
199	<	final ReentrantLock lock = new ReentrantLock();
200	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
201	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
198	>	public void testLock()      { testLock(false); }
199	>	public void testLock_fair() { testLock(true); }
200	>	public void testLock(boolean fair) {
201	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
202	>	lock.lock();
203	>	assertLockedByMoi(lock);
204	>	releaseLock(lock);
205	>	}
206	>
207	>	/**
208	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
209	>	*/
210	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
211	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
212	>	public void testUnlock_IMSE(boolean fair) {
213	>	final ReentrantLock lock = new ReentrantLock(fair);
214		try {
128	–	assertFalse(lock.hasQueuedThreads());
129	–	lock.lock();
130	–	t1.start();
131	–	Thread.sleep(SHORT_DELAY_MS);
132	–	assertTrue(lock.hasQueuedThreads());
133	–	t2.start();
134	–	Thread.sleep(SHORT_DELAY_MS);
135	–	assertTrue(lock.hasQueuedThreads());
136	–	t1.interrupt();
137	–	Thread.sleep(SHORT_DELAY_MS);
138	–	assertTrue(lock.hasQueuedThreads());
215		lock.unlock();
216	<	Thread.sleep(SHORT_DELAY_MS);
217	<	assertFalse(lock.hasQueuedThreads());
218	<	t1.join();
143	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
216	>	shouldThrow();
217	>	} catch (IllegalMonitorStateException success) {}
218	>	}
219
220		/**
221	<	* getQueueLength reports number of waiting threads
221	>	* tryLock on an unlocked lock succeeds
222		*/
223	<	public void testGetQueueLength() {
224	<	final ReentrantLock lock = new ReentrantLock();
223	>	public void testTryLock()      { testTryLock(false); }
224	>	public void testTryLock_fair() { testTryLock(true); }
225	>	public void testTryLock(boolean fair) {
226	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
227	>	assertTrue(lock.tryLock());
228	>	assertLockedByMoi(lock);
229	>	assertTrue(lock.tryLock());
230	>	assertLockedByMoi(lock);
231	>	lock.unlock();
232	>	releaseLock(lock);
233	>	}
234	>
235	>	/**
236	>	* hasQueuedThreads reports whether there are waiting threads
237	>	*/
238	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
239	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
240	>	public void testHasQueuedThreads(boolean fair) {
241	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
242		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
243		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
244	<	try {
245	<	assertEquals(0, lock.getQueueLength());
246	<	lock.lock();
247	<	t1.start();
248	<	Thread.sleep(SHORT_DELAY_MS);
249	<	assertEquals(1, lock.getQueueLength());
250	<	t2.start();
251	<	Thread.sleep(SHORT_DELAY_MS);
252	<	assertEquals(2, lock.getQueueLength());
253	<	t1.interrupt();
254	<	Thread.sleep(SHORT_DELAY_MS);
255	<	assertEquals(1, lock.getQueueLength());
256	<	lock.unlock();
257	<	Thread.sleep(SHORT_DELAY_MS);
258	<	assertEquals(0, lock.getQueueLength());
259	<	t1.join();
172	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
244	>	assertFalse(lock.hasQueuedThreads());
245	>	lock.lock();
246	>	assertFalse(lock.hasQueuedThreads());
247	>	t1.start();
248	>	waitForQueuedThread(lock, t1);
249	>	assertTrue(lock.hasQueuedThreads());
250	>	t2.start();
251	>	waitForQueuedThread(lock, t2);
252	>	assertTrue(lock.hasQueuedThreads());
253	>	t1.interrupt();
254	>	awaitTermination(t1);
255	>	assertTrue(lock.hasQueuedThreads());
256	>	lock.unlock();
257	>	awaitTermination(t2);
258	>	assertFalse(lock.hasQueuedThreads());
259	>	}
260
261		/**
262		* getQueueLength reports number of waiting threads
263		*/
264	<	public void testGetQueueLength_fair() {
265	<	final ReentrantLock lock = new ReentrantLock(true);
264	>	public void testGetQueueLength()      { testGetQueueLength(false); }
265	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
266	>	public void testGetQueueLength(boolean fair) {
267	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
268		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
269		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
270	<	try {
271	<	assertEquals(0, lock.getQueueLength());
272	<	lock.lock();
273	<	t1.start();
274	<	Thread.sleep(SHORT_DELAY_MS);
275	<	assertEquals(1, lock.getQueueLength());
276	<	t2.start();
277	<	Thread.sleep(SHORT_DELAY_MS);
278	<	assertEquals(2, lock.getQueueLength());
279	<	t1.interrupt();
280	<	Thread.sleep(SHORT_DELAY_MS);
281	<	assertEquals(1, lock.getQueueLength());
282	<	lock.unlock();
283	<	Thread.sleep(SHORT_DELAY_MS);
284	<	assertEquals(0, lock.getQueueLength());
200	<	t1.join();
201	<	t2.join();
202	<	} catch(Exception e){
203	<	unexpectedException();
204	<	}
205	<	}
270	>	assertEquals(0, lock.getQueueLength());
271	>	lock.lock();
272	>	t1.start();
273	>	waitForQueuedThread(lock, t1);
274	>	assertEquals(1, lock.getQueueLength());
275	>	t2.start();
276	>	waitForQueuedThread(lock, t2);
277	>	assertEquals(2, lock.getQueueLength());
278	>	t1.interrupt();
279	>	awaitTermination(t1);
280	>	assertEquals(1, lock.getQueueLength());
281	>	lock.unlock();
282	>	awaitTermination(t2);
283	>	assertEquals(0, lock.getQueueLength());
284	>	}
285
286		/**
287		* hasQueuedThread(null) throws NPE
288		*/
289	<	public void testHasQueuedThreadNPE() {
290	<	final ReentrantLock sync = new ReentrantLock();
289	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
290	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
291	>	public void testHasQueuedThreadNPE(boolean fair) {
292	>	final ReentrantLock lock = new ReentrantLock(fair);
293		try {
294	<	sync.hasQueuedThread(null);
294	>	lock.hasQueuedThread(null);
295		shouldThrow();
296	<	} catch (NullPointerException success) {
216	<	}
296	>	} catch (NullPointerException success) {}
297		}
298
299		/**
300	<	* hasQueuedThread reports whether a thread is queued.
300	>	* hasQueuedThread reports whether a thread is queued
301		*/
302	<	public void testHasQueuedThread() {
303	<	final ReentrantLock sync = new ReentrantLock();
304	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
305	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
306	<	try {
307	<	assertFalse(sync.hasQueuedThread(t1));
308	<	assertFalse(sync.hasQueuedThread(t2));
309	<	sync.lock();
310	<	t1.start();
311	<	Thread.sleep(SHORT_DELAY_MS);
312	<	assertTrue(sync.hasQueuedThread(t1));
313	<	t2.start();
314	<	Thread.sleep(SHORT_DELAY_MS);
315	<	assertTrue(sync.hasQueuedThread(t1));
316	<	assertTrue(sync.hasQueuedThread(t2));
317	<	t1.interrupt();
318	<	Thread.sleep(SHORT_DELAY_MS);
319	<	assertFalse(sync.hasQueuedThread(t1));
320	<	assertTrue(sync.hasQueuedThread(t2));
321	<	sync.unlock();
322	<	Thread.sleep(SHORT_DELAY_MS);
323	<	assertFalse(sync.hasQueuedThread(t1));
324	<	Thread.sleep(SHORT_DELAY_MS);
325	<	assertFalse(sync.hasQueuedThread(t2));
326	<	t1.join();
327	<	t2.join();
248	<	} catch(Exception e){
249	<	unexpectedException();
250	<	}
251	<	}
252	<
302	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
303	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
304	>	public void testHasQueuedThread(boolean fair) {
305	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
306	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
307	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
308	>	assertFalse(lock.hasQueuedThread(t1));
309	>	assertFalse(lock.hasQueuedThread(t2));
310	>	lock.lock();
311	>	t1.start();
312	>	waitForQueuedThread(lock, t1);
313	>	assertTrue(lock.hasQueuedThread(t1));
314	>	assertFalse(lock.hasQueuedThread(t2));
315	>	t2.start();
316	>	waitForQueuedThread(lock, t2);
317	>	assertTrue(lock.hasQueuedThread(t1));
318	>	assertTrue(lock.hasQueuedThread(t2));
319	>	t1.interrupt();
320	>	awaitTermination(t1);
321	>	assertFalse(lock.hasQueuedThread(t1));
322	>	assertTrue(lock.hasQueuedThread(t2));
323	>	lock.unlock();
324	>	awaitTermination(t2);
325	>	assertFalse(lock.hasQueuedThread(t1));
326	>	assertFalse(lock.hasQueuedThread(t2));
327	>	}
328
329		/**
330		* getQueuedThreads includes waiting threads
331		*/
332	<	public void testGetQueuedThreads() {
333	<	final PublicReentrantLock lock = new PublicReentrantLock();
332	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
333	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
334	>	public void testGetQueuedThreads(boolean fair) {
335	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
336		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
337		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
338	<	try {
339	<	assertTrue(lock.getQueuedThreads().isEmpty());
340	<	lock.lock();
341	<	assertTrue(lock.getQueuedThreads().isEmpty());
342	<	t1.start();
343	<	Thread.sleep(SHORT_DELAY_MS);
344	<	assertTrue(lock.getQueuedThreads().contains(t1));
345	<	t2.start();
346	<	Thread.sleep(SHORT_DELAY_MS);
347	<	assertTrue(lock.getQueuedThreads().contains(t1));
348	<	assertTrue(lock.getQueuedThreads().contains(t2));
349	<	t1.interrupt();
350	<	Thread.sleep(SHORT_DELAY_MS);
351	<	assertFalse(lock.getQueuedThreads().contains(t1));
352	<	assertTrue(lock.getQueuedThreads().contains(t2));
353	<	lock.unlock();
354	<	Thread.sleep(SHORT_DELAY_MS);
355	<	assertTrue(lock.getQueuedThreads().isEmpty());
356	<	t1.join();
357	<	t2.join();
358	<	} catch(Exception e){
282	<	unexpectedException();
283	<	}
284	<	}
285	<
338	>	assertTrue(lock.getQueuedThreads().isEmpty());
339	>	lock.lock();
340	>	assertTrue(lock.getQueuedThreads().isEmpty());
341	>	t1.start();
342	>	waitForQueuedThread(lock, t1);
343	>	assertEquals(1, lock.getQueuedThreads().size());
344	>	assertTrue(lock.getQueuedThreads().contains(t1));
345	>	t2.start();
346	>	waitForQueuedThread(lock, t2);
347	>	assertEquals(2, lock.getQueuedThreads().size());
348	>	assertTrue(lock.getQueuedThreads().contains(t1));
349	>	assertTrue(lock.getQueuedThreads().contains(t2));
350	>	t1.interrupt();
351	>	awaitTermination(t1);
352	>	assertFalse(lock.getQueuedThreads().contains(t1));
353	>	assertTrue(lock.getQueuedThreads().contains(t2));
354	>	assertEquals(1, lock.getQueuedThreads().size());
355	>	lock.unlock();
356	>	awaitTermination(t2);
357	>	assertTrue(lock.getQueuedThreads().isEmpty());
358	>	}
359
360		/**
361	<	* timed tryLock is interruptible.
362	<	*/
363	<	public void testInterruptedException2() {
364	<	final ReentrantLock lock = new ReentrantLock();
365	<	lock.lock();
366	<	Thread t = new Thread(new Runnable() {
367	<	public void run() {
368	<	try {
369	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
370	<	threadShouldThrow();
371	<	} catch(InterruptedException success){}
299	<	}
300	<	});
301	<	try {
302	<	t.start();
303	<	t.interrupt();
304	<	} catch(Exception e){
305	<	unexpectedException();
306	<	}
307	<	}
361	>	* timed tryLock is interruptible
362	>	*/
363	>	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
364	>	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
365	>	public void testTryLock_Interruptible(boolean fair) {
366	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
367	>	lock.lock();
368	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
369	>	public void realRun() throws InterruptedException {
370	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
371	>	}});
372
373	+	waitForQueuedThread(lock, t);
374	+	t.interrupt();
375	+	awaitTermination(t);
376	+	releaseLock(lock);
377	+	}
378
379		/**
380	<	* TryLock on a locked lock fails
380	>	* tryLock on a locked lock fails
381		*/
382	<	public void testTryLockWhenLocked() {
383	<	final ReentrantLock lock = new ReentrantLock();
384	<	lock.lock();
385	<	Thread t = new Thread(new Runnable() {
386	<	public void run() {
387	<	threadAssertFalse(lock.tryLock());
388	<	}
389	<	});
390	<	try {
391	<	t.start();
392	<	t.join();
393	<	lock.unlock();
394	<	} catch(Exception e){
326	<	unexpectedException();
327	<	}
328	<	}
382	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
383	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
384	>	public void testTryLockWhenLocked(boolean fair) {
385	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
386	>	lock.lock();
387	>	Thread t = newStartedThread(new CheckedRunnable() {
388	>	public void realRun() {
389	>	assertFalse(lock.tryLock());
390	>	}});
391	>
392	>	awaitTermination(t);
393	>	releaseLock(lock);
394	>	}
395
396		/**
397		* Timed tryLock on a locked lock times out
398		*/
399	<	public void testTryLock_Timeout() {
400	<	final ReentrantLock lock = new ReentrantLock();
401	<	lock.lock();
402	<	Thread t = new Thread(new Runnable() {
403	<	public void run() {
404	<	try {
405	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
406	<	} catch (Exception ex) {
407	<	threadUnexpectedException();
408	<	}
409	<	}
410	<	});
411	<	try {
412	<	t.start();
413	<	t.join();
348	<	lock.unlock();
349	<	} catch(Exception e){
350	<	unexpectedException();
351	<	}
352	<	}
353	<
354	<	/**
355	<	* getHoldCount returns number of recursive holds
356	<	*/
357	<	public void testGetHoldCount() {
358	<	ReentrantLock lock = new ReentrantLock();
359	<	for(int i = 1; i <= SIZE; i++) {
360	<	lock.lock();
361	<	assertEquals(i,lock.getHoldCount());
362	<	}
363	<	for(int i = SIZE; i > 0; i--) {
364	<	lock.unlock();
365	<	assertEquals(i-1,lock.getHoldCount());
366	<	}
399	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
400	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
401	>	public void testTryLock_Timeout(boolean fair) {
402	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
403	>	final long timeoutMillis = timeoutMillis();
404	>	lock.lock();
405	>	Thread t = newStartedThread(new CheckedRunnable() {
406	>	public void realRun() throws InterruptedException {
407	>	long startTime = System.nanoTime();
408	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
409	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
410	>	}});
411	>
412	>	awaitTermination(t);
413	>	releaseLock(lock);
414		}
415	<
369	<
415	>
416		/**
417	<	* isLocked is true when locked and false when not
417	>	* getHoldCount returns number of recursive holds
418		*/
419	<	public void testIsLocked() {
420	<	final ReentrantLock lock = new ReentrantLock();
421	<	lock.lock();
422	<	assertTrue(lock.isLocked());
423	<	lock.unlock();
424	<	assertFalse(lock.isLocked());
425	<	Thread t = new Thread(new Runnable() {
426	<	public void run() {
427	<	lock.lock();
428	<	try {
429	<	Thread.sleep(SMALL_DELAY_MS);
384	<	}
385	<	catch(Exception e) {
386	<	threadUnexpectedException();
387	<	}
388	<	lock.unlock();
389	<	}
390	<	});
391	<	try {
392	<	t.start();
393	<	Thread.sleep(SHORT_DELAY_MS);
394	<	assertTrue(lock.isLocked());
395	<	t.join();
396	<	assertFalse(lock.isLocked());
397	<	} catch(Exception e){
398	<	unexpectedException();
419	>	public void testGetHoldCount()      { testGetHoldCount(false); }
420	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
421	>	public void testGetHoldCount(boolean fair) {
422	>	final ReentrantLock lock = new ReentrantLock(fair);
423	>	for (int i = 1; i <= SIZE; i++) {
424	>	lock.lock();
425	>	assertEquals(i, lock.getHoldCount());
426	>	}
427	>	for (int i = SIZE; i > 0; i--) {
428	>	lock.unlock();
429	>	assertEquals(i - 1, lock.getHoldCount());
430		}
431		}
432
402	–
433		/**
434	<	* lockInterruptibly is interruptible.
434	>	* isLocked is true when locked and false when not
435		*/
436	<	public void testLockInterruptibly1() {
437	<	final ReentrantLock lock = new ReentrantLock();
438	<	lock.lock();
439	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
436	>	public void testIsLocked()      { testIsLocked(false); }
437	>	public void testIsLocked_fair() { testIsLocked(true); }
438	>	public void testIsLocked(boolean fair) {
439	>	final ReentrantLock lock = new ReentrantLock(fair);
440		try {
441	<	t.start();
442	<	t.interrupt();
441	>	assertFalse(lock.isLocked());
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444	>	lock.lock();
445	>	assertTrue(lock.isLocked());
446		lock.unlock();
447	<	t.join();
448	<	} catch(Exception e){
449	<	unexpectedException();
450	<	}
451	<	}
447	>	assertTrue(lock.isLocked());
448	>	lock.unlock();
449	>	assertFalse(lock.isLocked());
450	>	final CyclicBarrier barrier = new CyclicBarrier(2);
451	>	Thread t = newStartedThread(new CheckedRunnable() {
452	>	public void realRun() throws Exception {
453	>	lock.lock();
454	>	assertTrue(lock.isLocked());
455	>	barrier.await();
456	>	barrier.await();
457	>	lock.unlock();
458	>	}});
459	>
460	>	barrier.await();
461	>	assertTrue(lock.isLocked());
462	>	barrier.await();
463	>	awaitTermination(t);
464	>	assertFalse(lock.isLocked());
465	>	} catch (Exception fail) { threadUnexpectedException(fail); }
466	>	}
467
468		/**
469		* lockInterruptibly succeeds when unlocked, else is interruptible
470		*/
471	<	public void testLockInterruptibly2() {
472	<	final ReentrantLock lock = new ReentrantLock();
473	<	try {
474	<	lock.lockInterruptibly();
427	<	} catch(Exception e) {
428	<	unexpectedException();
429	<	}
430	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
471	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
472	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
473	>	public void testLockInterruptibly(boolean fair) {
474	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
475		try {
476	<	t.start();
477	<	t.interrupt();
478	<	assertTrue(lock.isLocked());
479	<	assertTrue(lock.isHeldByCurrentThread());
480	<	t.join();
481	<	} catch(Exception e){
482	<	unexpectedException();
483	<	}
476	>	lock.lockInterruptibly();
477	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
478	>	assertLockedByMoi(lock);
479	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
480	>	waitForQueuedThread(lock, t);
481	>	t.interrupt();
482	>	assertTrue(lock.isLocked());
483	>	assertTrue(lock.isHeldByCurrentThread());
484	>	awaitTermination(t);
485	>	releaseLock(lock);
486		}
487
488		/**
489		* Calling await without holding lock throws IllegalMonitorStateException
490		*/
491	<	public void testAwait_IllegalMonitor() {
492	<	final ReentrantLock lock = new ReentrantLock();
491	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
492	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
493	>	public void testAwait_IMSE(boolean fair) {
494	>	final ReentrantLock lock = new ReentrantLock(fair);
495		final Condition c = lock.newCondition();
496	<	try {
497	<	c.await();
498	<	shouldThrow();
499	<	}
500	<	catch (IllegalMonitorStateException success) {
501	<	}
502	<	catch (Exception ex) {
503	<	unexpectedException();
496	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
497	>	long startTime = System.nanoTime();
498	>	try {
499	>	await(c, awaitMethod);
500	>	shouldThrow();
501	>	} catch (IllegalMonitorStateException success) {
502	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
503	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
504		}
505		}
506
507		/**
508		* Calling signal without holding lock throws IllegalMonitorStateException
509		*/
510	<	public void testSignal_IllegalMonitor() {
511	<	final ReentrantLock lock = new ReentrantLock();
510	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
511	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
512	>	public void testSignal_IMSE(boolean fair) {
513	>	final ReentrantLock lock = new ReentrantLock(fair);
514		final Condition c = lock.newCondition();
515		try {
516		c.signal();
517		shouldThrow();
518	<	}
469	<	catch (IllegalMonitorStateException success) {
470	<	}
471	<	catch (Exception ex) {
472	<	unexpectedException();
473	<	}
518	>	} catch (IllegalMonitorStateException success) {}
519		}
520
521		/**
522		* awaitNanos without a signal times out
523		*/
524	<	public void testAwaitNanos_Timeout() {
525	<	final ReentrantLock lock = new ReentrantLock();
524	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
525	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
526	>	public void testAwaitNanos_Timeout(boolean fair) {
527	>	final ReentrantLock lock = new ReentrantLock(fair);
528		final Condition c = lock.newCondition();
529	+	final long timeoutMillis = timeoutMillis();
530	+	final long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
531	+	lock.lock();
532	+	final long startTime = System.nanoTime();
533		try {
534	<	lock.lock();
535	<	long t = c.awaitNanos(100);
536	<	assertTrue(t <= 0);
537	<	lock.unlock();
538	<	}
488	<	catch (Exception ex) {
489	<	unexpectedException();
490	<	}
534	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
535	>	assertTrue(nanosRemaining <= 0);
536	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
537	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
538	>	lock.unlock();
539		}
540
541		/**
542	<	*  timed await without a signal times out
542	>	* timed await without a signal times out
543		*/
544	<	public void testAwait_Timeout() {
545	<	final ReentrantLock lock = new ReentrantLock();
544	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
545	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
546	>	public void testAwait_Timeout(boolean fair) {
547	>	final ReentrantLock lock = new ReentrantLock(fair);
548		final Condition c = lock.newCondition();
549	+	final long timeoutMillis = timeoutMillis();
550	+	lock.lock();
551	+	final long startTime = System.nanoTime();
552		try {
553	<	lock.lock();
554	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
555	<	lock.unlock();
556	<	}
504	<	catch (Exception ex) {
505	<	unexpectedException();
506	<	}
553	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
554	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
555	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
556	>	lock.unlock();
557		}
558
559		/**
560		* awaitUntil without a signal times out
561		*/
562	<	public void testAwaitUntil_Timeout() {
563	<	final ReentrantLock lock = new ReentrantLock();
562	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
563	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
564	>	public void testAwaitUntil_Timeout(boolean fair) {
565	>	final ReentrantLock lock = new ReentrantLock(fair);
566		final Condition c = lock.newCondition();
567	<	try {
568	<	lock.lock();
569	<	java.util.Date d = new java.util.Date();
570	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
571	<	lock.unlock();
572	<	}
573	<	catch (Exception ex) {
574	<	unexpectedException();
575	<	}
567	>	lock.lock();
568	>	// We shouldn't assume that nanoTime and currentTimeMillis
569	>	// use the same time source, so don't use nanoTime here.
570	>	final java.util.Date delayedDate = delayedDate(timeoutMillis());
571	>	try {
572	>	assertFalse(c.awaitUntil(delayedDate));
573	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
574	>	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
575	>	lock.unlock();
576		}
577
578		/**
579		* await returns when signalled
580		*/
581	<	public void testAwait() {
582	<	final ReentrantLock lock = new ReentrantLock();
581	>	public void testAwait()      { testAwait(false); }
582	>	public void testAwait_fair() { testAwait(true); }
583	>	public void testAwait(boolean fair) {
584	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
585		final Condition c = lock.newCondition();
586	<	Thread t = new Thread(new Runnable() {
587	<	public void run() {
588	<	try {
589	<	lock.lock();
590	<	c.await();
591	<	lock.unlock();
592	<	}
593	<	catch(InterruptedException e) {
540	<	threadUnexpectedException();
541	<	}
542	<	}
543	<	});
586	>	final CountDownLatch locked = new CountDownLatch(1);
587	>	Thread t = newStartedThread(new CheckedRunnable() {
588	>	public void realRun() throws InterruptedException {
589	>	lock.lock();
590	>	locked.countDown();
591	>	c.await();
592	>	lock.unlock();
593	>	}});
594
595	<	try {
596	<	t.start();
597	<	Thread.sleep(SHORT_DELAY_MS);
598	<	lock.lock();
599	<	c.signal();
600	<	lock.unlock();
601	<	t.join(SHORT_DELAY_MS);
602	<	assertFalse(t.isAlive());
553	<	}
554	<	catch (Exception ex) {
555	<	unexpectedException();
556	<	}
595	>	await(locked);
596	>	lock.lock();
597	>	assertHasWaiters(lock, c, t);
598	>	c.signal();
599	>	assertHasNoWaiters(lock, c);
600	>	assertTrue(t.isAlive());
601	>	lock.unlock();
602	>	awaitTermination(t);
603		}
604
605		/**
606		* hasWaiters throws NPE if null
607		*/
608	<	public void testHasWaitersNPE() {
609	<	final ReentrantLock lock = new ReentrantLock();
608	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
609	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
610	>	public void testHasWaitersNPE(boolean fair) {
611	>	final ReentrantLock lock = new ReentrantLock(fair);
612		try {
613		lock.hasWaiters(null);
614		shouldThrow();
615	<	} catch (NullPointerException success) {
568	<	} catch (Exception ex) {
569	<	unexpectedException();
570	<	}
615	>	} catch (NullPointerException success) {}
616		}
617
618		/**
619		* getWaitQueueLength throws NPE if null
620		*/
621	<	public void testGetWaitQueueLengthNPE() {
622	<	final ReentrantLock lock = new ReentrantLock();
621	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
622	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
623	>	public void testGetWaitQueueLengthNPE(boolean fair) {
624	>	final ReentrantLock lock = new ReentrantLock(fair);
625		try {
626		lock.getWaitQueueLength(null);
627		shouldThrow();
628	<	} catch (NullPointerException success) {
582	<	} catch (Exception ex) {
583	<	unexpectedException();
584	<	}
628	>	} catch (NullPointerException success) {}
629		}
630
587	–
631		/**
632		* getWaitingThreads throws NPE if null
633		*/
634	<	public void testGetWaitingThreadsNPE() {
635	<	final PublicReentrantLock lock = new PublicReentrantLock();
634	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
635	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
636	>	public void testGetWaitingThreadsNPE(boolean fair) {
637	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
638		try {
639		lock.getWaitingThreads(null);
640		shouldThrow();
641	<	} catch (NullPointerException success) {
597	<	} catch (Exception ex) {
598	<	unexpectedException();
599	<	}
641	>	} catch (NullPointerException success) {}
642		}
643
602	–
644		/**
645	<	* hasWaiters throws IAE if not owned
645	>	* hasWaiters throws IllegalArgumentException if not owned
646		*/
647	<	public void testHasWaitersIAE() {
648	<	final ReentrantLock lock = new ReentrantLock();
649	<	final Condition c = (lock.newCondition());
650	<	final ReentrantLock lock2 = new ReentrantLock();
647	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
648	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
649	>	public void testHasWaitersIAE(boolean fair) {
650	>	final ReentrantLock lock = new ReentrantLock(fair);
651	>	final Condition c = lock.newCondition();
652	>	final ReentrantLock lock2 = new ReentrantLock(fair);
653		try {
654		lock2.hasWaiters(c);
655		shouldThrow();
656	<	} catch (IllegalArgumentException success) {
614	<	} catch (Exception ex) {
615	<	unexpectedException();
616	<	}
656	>	} catch (IllegalArgumentException success) {}
657		}
658
659		/**
660	<	* hasWaiters throws IMSE if not locked
660	>	* hasWaiters throws IllegalMonitorStateException if not locked
661		*/
662	<	public void testHasWaitersIMSE() {
663	<	final ReentrantLock lock = new ReentrantLock();
664	<	final Condition c = (lock.newCondition());
662	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
663	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
664	>	public void testHasWaitersIMSE(boolean fair) {
665	>	final ReentrantLock lock = new ReentrantLock(fair);
666	>	final Condition c = lock.newCondition();
667		try {
668		lock.hasWaiters(c);
669		shouldThrow();
670	<	} catch (IllegalMonitorStateException success) {
629	<	} catch (Exception ex) {
630	<	unexpectedException();
631	<	}
670	>	} catch (IllegalMonitorStateException success) {}
671		}
672
634	–
673		/**
674	<	* getWaitQueueLength throws IAE if not owned
674	>	* getWaitQueueLength throws IllegalArgumentException if not owned
675		*/
676	<	public void testGetWaitQueueLengthIAE() {
677	<	final ReentrantLock lock = new ReentrantLock();
678	<	final Condition c = (lock.newCondition());
679	<	final ReentrantLock lock2 = new ReentrantLock();
676	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
677	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
678	>	public void testGetWaitQueueLengthIAE(boolean fair) {
679	>	final ReentrantLock lock = new ReentrantLock(fair);
680	>	final Condition c = lock.newCondition();
681	>	final ReentrantLock lock2 = new ReentrantLock(fair);
682		try {
683		lock2.getWaitQueueLength(c);
684		shouldThrow();
685	<	} catch (IllegalArgumentException success) {
646	<	} catch (Exception ex) {
647	<	unexpectedException();
648	<	}
685	>	} catch (IllegalArgumentException success) {}
686		}
687
688		/**
689	<	* getWaitQueueLength throws IMSE if not locked
689	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
690		*/
691	<	public void testGetWaitQueueLengthIMSE() {
692	<	final ReentrantLock lock = new ReentrantLock();
693	<	final Condition c = (lock.newCondition());
691	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
692	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
693	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
694	>	final ReentrantLock lock = new ReentrantLock(fair);
695	>	final Condition c = lock.newCondition();
696		try {
697		lock.getWaitQueueLength(c);
698		shouldThrow();
699	<	} catch (IllegalMonitorStateException success) {
661	<	} catch (Exception ex) {
662	<	unexpectedException();
663	<	}
699	>	} catch (IllegalMonitorStateException success) {}
700		}
701
666	–
702		/**
703	<	* getWaitingThreads throws IAE if not owned
703	>	* getWaitingThreads throws IllegalArgumentException if not owned
704		*/
705	<	public void testGetWaitingThreadsIAE() {
706	<	final PublicReentrantLock lock = new PublicReentrantLock();
707	<	final Condition c = (lock.newCondition());
708	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
705	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
706	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
707	>	public void testGetWaitingThreadsIAE(boolean fair) {
708	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
709	>	final Condition c = lock.newCondition();
710	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
711		try {
712		lock2.getWaitingThreads(c);
713		shouldThrow();
714	<	} catch (IllegalArgumentException success) {
678	<	} catch (Exception ex) {
679	<	unexpectedException();
680	<	}
714	>	} catch (IllegalArgumentException success) {}
715		}
716
717		/**
718	<	* getWaitingThreads throws IMSE if not locked
718	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
719		*/
720	<	public void testGetWaitingThreadsIMSE() {
721	<	final PublicReentrantLock lock = new PublicReentrantLock();
722	<	final Condition c = (lock.newCondition());
720	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
721	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
722	>	public void testGetWaitingThreadsIMSE(boolean fair) {
723	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
724	>	final Condition c = lock.newCondition();
725		try {
726		lock.getWaitingThreads(c);
727		shouldThrow();
728	<	} catch (IllegalMonitorStateException success) {
693	<	} catch (Exception ex) {
694	<	unexpectedException();
695	<	}
728	>	} catch (IllegalMonitorStateException success) {}
729		}
730
698	–
699	–
731		/**
732		* hasWaiters returns true when a thread is waiting, else false
733		*/
734	<	public void testHasWaiters() {
735	<	final ReentrantLock lock = new ReentrantLock();
734	>	public void testHasWaiters()      { testHasWaiters(false); }
735	>	public void testHasWaiters_fair() { testHasWaiters(true); }
736	>	public void testHasWaiters(boolean fair) {
737	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
738		final Condition c = lock.newCondition();
739	<	Thread t = new Thread(new Runnable() {
740	<	public void run() {
741	<	try {
742	<	lock.lock();
743	<	threadAssertFalse(lock.hasWaiters(c));
744	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
745	<	c.await();
746	<	lock.unlock();
747	<	}
748	<	catch(InterruptedException e) {
749	<	threadUnexpectedException();
750	<	}
718	<	}
719	<	});
739	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
740	>	Thread t = newStartedThread(new CheckedRunnable() {
741	>	public void realRun() throws InterruptedException {
742	>	lock.lock();
743	>	assertHasNoWaiters(lock, c);
744	>	assertFalse(lock.hasWaiters(c));
745	>	pleaseSignal.countDown();
746	>	c.await();
747	>	assertHasNoWaiters(lock, c);
748	>	assertFalse(lock.hasWaiters(c));
749	>	lock.unlock();
750	>	}});
751
752	<	try {
753	<	t.start();
754	<	Thread.sleep(SHORT_DELAY_MS);
755	<	lock.lock();
756	<	assertTrue(lock.hasWaiters(c));
757	<	assertEquals(1, lock.getWaitQueueLength(c));
758	<	c.signal();
759	<	lock.unlock();
760	<	Thread.sleep(SHORT_DELAY_MS);
761	<	lock.lock();
731	<	assertFalse(lock.hasWaiters(c));
732	<	assertEquals(0, lock.getWaitQueueLength(c));
733	<	lock.unlock();
734	<	t.join(SHORT_DELAY_MS);
735	<	assertFalse(t.isAlive());
736	<	}
737	<	catch (Exception ex) {
738	<	unexpectedException();
739	<	}
752	>	await(pleaseSignal);
753	>	lock.lock();
754	>	assertHasWaiters(lock, c, t);
755	>	assertTrue(lock.hasWaiters(c));
756	>	c.signal();
757	>	assertHasNoWaiters(lock, c);
758	>	assertFalse(lock.hasWaiters(c));
759	>	lock.unlock();
760	>	awaitTermination(t);
761	>	assertHasNoWaiters(lock, c);
762		}
763
764		/**
765		* getWaitQueueLength returns number of waiting threads
766		*/
767	<	public void testGetWaitQueueLength() {
768	<	final ReentrantLock lock = new ReentrantLock();
767	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
768	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
769	>	public void testGetWaitQueueLength(boolean fair) {
770	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
771		final Condition c = lock.newCondition();
772	<	Thread t1 = new Thread(new Runnable() {
773	<	public void run() {
774	<	try {
775	<	lock.lock();
776	<	threadAssertFalse(lock.hasWaiters(c));
777	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
778	<	c.await();
779	<	lock.unlock();
780	<	}
781	<	catch(InterruptedException e) {
782	<	threadUnexpectedException();
783	<	}
784	<	}
785	<	});
786	<
787	<	Thread t2 = new Thread(new Runnable() {
788	<	public void run() {
789	<	try {
790	<	lock.lock();
791	<	threadAssertTrue(lock.hasWaiters(c));
792	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
769	<	c.await();
770	<	lock.unlock();
771	<	}
772	<	catch(InterruptedException e) {
773	<	threadUnexpectedException();
774	<	}
775	<	}
776	<	});
772	>	final CountDownLatch locked1 = new CountDownLatch(1);
773	>	final CountDownLatch locked2 = new CountDownLatch(1);
774	>	Thread t1 = new Thread(new CheckedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	assertFalse(lock.hasWaiters(c));
778	>	assertEquals(0, lock.getWaitQueueLength(c));
779	>	locked1.countDown();
780	>	c.await();
781	>	lock.unlock();
782	>	}});
783	>
784	>	Thread t2 = new Thread(new CheckedRunnable() {
785	>	public void realRun() throws InterruptedException {
786	>	lock.lock();
787	>	assertTrue(lock.hasWaiters(c));
788	>	assertEquals(1, lock.getWaitQueueLength(c));
789	>	locked2.countDown();
790	>	c.await();
791	>	lock.unlock();
792	>	}});
793
794	<	try {
795	<	t1.start();
796	<	Thread.sleep(SHORT_DELAY_MS);
797	<	t2.start();
798	<	Thread.sleep(SHORT_DELAY_MS);
799	<	lock.lock();
800	<	assertTrue(lock.hasWaiters(c));
801	<	assertEquals(2, lock.getWaitQueueLength(c));
802	<	c.signalAll();
803	<	lock.unlock();
804	<	Thread.sleep(SHORT_DELAY_MS);
805	<	lock.lock();
806	<	assertFalse(lock.hasWaiters(c));
807	<	assertEquals(0, lock.getWaitQueueLength(c));
808	<	lock.unlock();
809	<	t1.join(SHORT_DELAY_MS);
810	<	t2.join(SHORT_DELAY_MS);
811	<	assertFalse(t1.isAlive());
812	<	assertFalse(t2.isAlive());
813	<	}
814	<	catch (Exception ex) {
815	<	unexpectedException();
816	<	}
794	>	lock.lock();
795	>	assertEquals(0, lock.getWaitQueueLength(c));
796	>	lock.unlock();
797	>
798	>	t1.start();
799	>	await(locked1);
800	>
801	>	lock.lock();
802	>	assertHasWaiters(lock, c, t1);
803	>	assertEquals(1, lock.getWaitQueueLength(c));
804	>	lock.unlock();
805	>
806	>	t2.start();
807	>	await(locked2);
808	>
809	>	lock.lock();
810	>	assertHasWaiters(lock, c, t1, t2);
811	>	assertEquals(2, lock.getWaitQueueLength(c));
812	>	c.signalAll();
813	>	assertHasNoWaiters(lock, c);
814	>	lock.unlock();
815	>
816	>	awaitTermination(t1);
817	>	awaitTermination(t2);
818	>
819	>	assertHasNoWaiters(lock, c);
820		}
821
822		/**
823		* getWaitingThreads returns only and all waiting threads
824		*/
825	<	public void testGetWaitingThreads() {
826	<	final PublicReentrantLock lock = new PublicReentrantLock();
825	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
826	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
827	>	public void testGetWaitingThreads(boolean fair) {
828	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
829		final Condition c = lock.newCondition();
830	<	Thread t1 = new Thread(new Runnable() {
831	<	public void run() {
832	<	try {
833	<	lock.lock();
834	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
835	<	c.await();
836	<	lock.unlock();
837	<	}
838	<	catch(InterruptedException e) {
839	<	threadUnexpectedException();
840	<	}
841	<	}
842	<	});
843	<
844	<	Thread t2 = new Thread(new Runnable() {
845	<	public void run() {
846	<	try {
847	<	lock.lock();
848	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
828	<	c.await();
829	<	lock.unlock();
830	<	}
831	<	catch(InterruptedException e) {
832	<	threadUnexpectedException();
833	<	}
834	<	}
835	<	});
830	>	final CountDownLatch locked1 = new CountDownLatch(1);
831	>	final CountDownLatch locked2 = new CountDownLatch(1);
832	>	Thread t1 = new Thread(new CheckedRunnable() {
833	>	public void realRun() throws InterruptedException {
834	>	lock.lock();
835	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
836	>	locked1.countDown();
837	>	c.await();
838	>	lock.unlock();
839	>	}});
840	>
841	>	Thread t2 = new Thread(new CheckedRunnable() {
842	>	public void realRun() throws InterruptedException {
843	>	lock.lock();
844	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
845	>	locked2.countDown();
846	>	c.await();
847	>	lock.unlock();
848	>	}});
849
850	<	try {
851	<	lock.lock();
852	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
853	<	lock.unlock();
854	<	t1.start();
855	<	Thread.sleep(SHORT_DELAY_MS);
856	<	t2.start();
857	<	Thread.sleep(SHORT_DELAY_MS);
858	<	lock.lock();
859	<	assertTrue(lock.hasWaiters(c));
860	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
861	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
862	<	c.signalAll();
850	<	lock.unlock();
851	<	Thread.sleep(SHORT_DELAY_MS);
852	<	lock.lock();
853	<	assertFalse(lock.hasWaiters(c));
854	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
855	<	lock.unlock();
856	<	t1.join(SHORT_DELAY_MS);
857	<	t2.join(SHORT_DELAY_MS);
858	<	assertFalse(t1.isAlive());
859	<	assertFalse(t2.isAlive());
860	<	}
861	<	catch (Exception ex) {
862	<	unexpectedException();
863	<	}
864	<	}
850	>	lock.lock();
851	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
852	>	lock.unlock();
853	>
854	>	t1.start();
855	>	await(locked1);
856	>
857	>	lock.lock();
858	>	assertHasWaiters(lock, c, t1);
859	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
860	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
861	>	assertEquals(1, lock.getWaitingThreads(c).size());
862	>	lock.unlock();
863
864	+	t2.start();
865	+	await(locked2);
866
867	+	lock.lock();
868	+	assertHasWaiters(lock, c, t1, t2);
869	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
870	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
871	+	assertEquals(2, lock.getWaitingThreads(c).size());
872	+	c.signalAll();
873	+	assertHasNoWaiters(lock, c);
874	+	lock.unlock();
875	+
876	+	awaitTermination(t1);
877	+	awaitTermination(t2);
878	+
879	+	assertHasNoWaiters(lock, c);
880	+	}
881
882		/**
883	<	* awaitUninterruptibly doesn't abort on interrupt
884	<	*/
885	<	public void testAwaitUninterruptibly() {
886	<	final ReentrantLock lock = new ReentrantLock();
887	<	final Condition c = lock.newCondition();
888	<	Thread t = new Thread(new Runnable() {
889	<	public void run() {
890	<	lock.lock();
891	<	c.awaitUninterruptibly();
892	<	lock.unlock();
893	<	}
894	<	});
883	>	* awaitUninterruptibly is uninterruptible
884	>	*/
885	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
886	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
887	>	public void testAwaitUninterruptibly(boolean fair) {
888	>	final ReentrantLock lock = new ReentrantLock(fair);
889	>	final Condition condition = lock.newCondition();
890	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
891	>
892	>	Thread t1 = newStartedThread(new CheckedRunnable() {
893	>	public void realRun() {
894	>	// Interrupt before awaitUninterruptibly
895	>	lock.lock();
896	>	pleaseInterrupt.countDown();
897	>	Thread.currentThread().interrupt();
898	>	condition.awaitUninterruptibly();
899	>	assertTrue(Thread.interrupted());
900	>	lock.unlock();
901	>	}});
902	>
903	>	Thread t2 = newStartedThread(new CheckedRunnable() {
904	>	public void realRun() {
905	>	// Interrupt during awaitUninterruptibly
906	>	lock.lock();
907	>	pleaseInterrupt.countDown();
908	>	condition.awaitUninterruptibly();
909	>	assertTrue(Thread.interrupted());
910	>	lock.unlock();
911	>	}});
912
913	<	try {
914	<	t.start();
915	<	Thread.sleep(SHORT_DELAY_MS);
916	<	t.interrupt();
917	<	lock.lock();
918	<	c.signal();
919	<	lock.unlock();
920	<	assert(t.isInterrupted());
921	<	t.join(SHORT_DELAY_MS);
922	<	assertFalse(t.isAlive());
923	<	}
924	<	catch (Exception ex) {
925	<	unexpectedException();
895	<	}
913	>	await(pleaseInterrupt);
914	>	t2.interrupt();
915	>	lock.lock();
916	>	lock.unlock();
917	>	assertThreadBlocks(t1, Thread.State.WAITING);
918	>	assertThreadBlocks(t2, Thread.State.WAITING);
919	>
920	>	lock.lock();
921	>	condition.signalAll();
922	>	lock.unlock();
923	>
924	>	awaitTermination(t1);
925	>	awaitTermination(t2);
926		}
927
928		/**
929	<	* await is interruptible
930	<	*/
931	<	public void testAwait_Interrupt() {
932	<	final ReentrantLock lock = new ReentrantLock();
929	>	* await/awaitNanos/awaitUntil is interruptible
930	>	*/
931	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
932	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
933	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
934	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
935	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
936	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
937	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
938	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
939	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
940	>	final PublicReentrantLock lock =
941	>	new PublicReentrantLock(fair);
942		final Condition c = lock.newCondition();
943	<	Thread t = new Thread(new Runnable() {
944	<	public void run() {
945	<	try {
946	<	lock.lock();
947	<	c.await();
948	<	lock.unlock();
949	<	threadShouldThrow();
950	<	}
951	<	catch(InterruptedException success) {
952	<	}
953	<	}
954	<	});
955	<
956	<	try {
957	<	t.start();
958	<	Thread.sleep(SHORT_DELAY_MS);
959	<	t.interrupt();
960	<	t.join(SHORT_DELAY_MS);
961	<	assertFalse(t.isAlive());
962	<	}
963	<	catch (Exception ex) {
964	<	unexpectedException();
926	<	}
943	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
944	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
945	>	public void realRun() throws InterruptedException {
946	>	lock.lock();
947	>	assertLockedByMoi(lock);
948	>	assertHasNoWaiters(lock, c);
949	>	pleaseInterrupt.countDown();
950	>	try {
951	>	await(c, awaitMethod);
952	>	} finally {
953	>	assertLockedByMoi(lock);
954	>	assertHasNoWaiters(lock, c);
955	>	lock.unlock();
956	>	assertFalse(Thread.interrupted());
957	>	}
958	>	}});
959	>
960	>	await(pleaseInterrupt);
961	>	assertHasWaiters(lock, c, t);
962	>	t.interrupt();
963	>	awaitTermination(t);
964	>	assertNotLocked(lock);
965		}
966
967		/**
968	<	* awaitNanos is interruptible
968	>	* signalAll wakes up all threads
969		*/
970	<	public void testAwaitNanos_Interrupt() {
971	<	final ReentrantLock lock = new ReentrantLock();
970	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
971	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
972	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
973	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
974	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
975	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
976	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
977	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
978	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
979	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
980		final Condition c = lock.newCondition();
981	<	Thread t = new Thread(new Runnable() {
982	<	public void run() {
983	<	try {
984	<	lock.lock();
985	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
986	<	lock.unlock();
987	<	threadShouldThrow();
988	<	}
943	<	catch(InterruptedException success) {
944	<	}
945	<	}
946	<	});
947	<
948	<	try {
949	<	t.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	t.interrupt();
952	<	t.join(SHORT_DELAY_MS);
953	<	assertFalse(t.isAlive());
954	<	}
955	<	catch (Exception ex) {
956	<	unexpectedException();
981	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
982	>	class Awaiter extends CheckedRunnable {
983	>	public void realRun() throws InterruptedException {
984	>	lock.lock();
985	>	pleaseSignal.countDown();
986	>	await(c, awaitMethod);
987	>	lock.unlock();
988	>	}
989		}
990	+
991	+	Thread t1 = newStartedThread(new Awaiter());
992	+	Thread t2 = newStartedThread(new Awaiter());
993	+
994	+	await(pleaseSignal);
995	+	lock.lock();
996	+	assertHasWaiters(lock, c, t1, t2);
997	+	c.signalAll();
998	+	assertHasNoWaiters(lock, c);
999	+	lock.unlock();
1000	+	awaitTermination(t1);
1001	+	awaitTermination(t2);
1002		}
1003
1004		/**
1005	<	* awaitUntil is interruptible
1006	<	*/
1007	<	public void testAwaitUntil_Interrupt() {
1008	<	final ReentrantLock lock = new ReentrantLock();
1005	>	* signal wakes up waiting threads in FIFO order
1006	>	*/
1007	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1008	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1009	>	public void testSignalWakesFifo(boolean fair) {
1010	>	final PublicReentrantLock lock =
1011	>	new PublicReentrantLock(fair);
1012		final Condition c = lock.newCondition();
1013	<	Thread t = new Thread(new Runnable() {
1014	<	public void run() {
1015	<	try {
1016	<	lock.lock();
1017	<	java.util.Date d = new java.util.Date();
1018	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1019	<	lock.unlock();
1020	<	threadShouldThrow();
1021	<	}
1022	<	catch(InterruptedException success) {
1023	<	}
1024	<	}
1025	<	});
1013	>	final CountDownLatch locked1 = new CountDownLatch(1);
1014	>	final CountDownLatch locked2 = new CountDownLatch(1);
1015	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1016	>	public void realRun() throws InterruptedException {
1017	>	lock.lock();
1018	>	locked1.countDown();
1019	>	c.await();
1020	>	lock.unlock();
1021	>	}});
1022	>
1023	>	await(locked1);
1024	>
1025	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1026	>	public void realRun() throws InterruptedException {
1027	>	lock.lock();
1028	>	locked2.countDown();
1029	>	c.await();
1030	>	lock.unlock();
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	<	}
1033	>	await(locked2);
1034	>
1035	>	lock.lock();
1036	>	assertHasWaiters(lock, c, t1, t2);
1037	>	assertFalse(lock.hasQueuedThreads());
1038	>	c.signal();
1039	>	assertHasWaiters(lock, c, t2);
1040	>	assertTrue(lock.hasQueuedThread(t1));
1041	>	assertFalse(lock.hasQueuedThread(t2));
1042	>	c.signal();
1043	>	assertHasNoWaiters(lock, c);
1044	>	assertTrue(lock.hasQueuedThread(t1));
1045	>	assertTrue(lock.hasQueuedThread(t2));
1046	>	lock.unlock();
1047	>	awaitTermination(t1);
1048	>	awaitTermination(t2);
1049		}
1050
1051		/**
1052	<	* signalAll wakes up all threads
1053	<	*/
1054	<	public void testSignalAll() {
1055	<	final ReentrantLock lock = new ReentrantLock();
1052	>	* await after multiple reentrant locking preserves lock count
1053	>	*/
1054	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1055	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1056	>	public void testAwaitLockCount(boolean fair) {
1057	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1058		final Condition c = lock.newCondition();
1059	<	Thread t1 = new Thread(new Runnable() {
1060	<	public void run() {
1061	<	try {
1062	<	lock.lock();
1063	<	c.await();
1064	<	lock.unlock();
1065	<	}
1066	<	catch(InterruptedException e) {
1067	<	threadUnexpectedException();
1068	<	}
1069	<	}
1070	<	});
1071	<
1072	<	Thread t2 = new Thread(new Runnable() {
1073	<	public void run() {
1074	<	try {
1075	<	lock.lock();
1076	<	c.await();
1077	<	lock.unlock();
1078	<	}
1079	<	catch(InterruptedException e) {
1080	<	threadUnexpectedException();
1081	<	}
1082	<	}
1083	<	});
1059	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1060	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1061	>	public void realRun() throws InterruptedException {
1062	>	lock.lock();
1063	>	assertLockedByMoi(lock);
1064	>	assertEquals(1, lock.getHoldCount());
1065	>	pleaseSignal.countDown();
1066	>	c.await();
1067	>	assertLockedByMoi(lock);
1068	>	assertEquals(1, lock.getHoldCount());
1069	>	lock.unlock();
1070	>	}});
1071	>
1072	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1073	>	public void realRun() throws InterruptedException {
1074	>	lock.lock();
1075	>	lock.lock();
1076	>	assertLockedByMoi(lock);
1077	>	assertEquals(2, lock.getHoldCount());
1078	>	pleaseSignal.countDown();
1079	>	c.await();
1080	>	assertLockedByMoi(lock);
1081	>	assertEquals(2, lock.getHoldCount());
1082	>	lock.unlock();
1083	>	lock.unlock();
1084	>	}});
1085
1086	<	try {
1087	<	t1.start();
1088	<	t2.start();
1089	<	Thread.sleep(SHORT_DELAY_MS);
1090	<	lock.lock();
1091	<	c.signalAll();
1092	<	lock.unlock();
1093	<	t1.join(SHORT_DELAY_MS);
1094	<	t2.join(SHORT_DELAY_MS);
1033	<	assertFalse(t1.isAlive());
1034	<	assertFalse(t2.isAlive());
1035	<	}
1036	<	catch (Exception ex) {
1037	<	unexpectedException();
1038	<	}
1086	>	await(pleaseSignal);
1087	>	lock.lock();
1088	>	assertHasWaiters(lock, c, t1, t2);
1089	>	assertEquals(1, lock.getHoldCount());
1090	>	c.signalAll();
1091	>	assertHasNoWaiters(lock, c);
1092	>	lock.unlock();
1093	>	awaitTermination(t1);
1094	>	awaitTermination(t2);
1095		}
1096
1097		/**
1098		* A serialized lock deserializes as unlocked
1099		*/
1100	<	public void testSerialization() {
1101	<	ReentrantLock l = new ReentrantLock();
1102	<	l.lock();
1103	<	l.unlock();
1100	>	public void testSerialization()      { testSerialization(false); }
1101	>	public void testSerialization_fair() { testSerialization(true); }
1102	>	public void testSerialization(boolean fair) {
1103	>	final ReentrantLock lock = new ReentrantLock(fair);
1104	>	lock.lock();
1105
1106	<	try {
1107	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1108	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1109	<	out.writeObject(l);
1110	<	out.close();
1111	<
1112	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1113	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1114	<	ReentrantLock r = (ReentrantLock) in.readObject();
1115	<	r.lock();
1116	<	r.unlock();
1117	<	} catch(Exception e){
1118	<	e.printStackTrace();
1119	<	unexpectedException();
1120	<	}
1106	>	ReentrantLock clone = serialClone(lock);
1107	>	assertEquals(lock.isFair(), clone.isFair());
1108	>	assertTrue(lock.isLocked());
1109	>	assertFalse(clone.isLocked());
1110	>	assertEquals(1, lock.getHoldCount());
1111	>	assertEquals(0, clone.getHoldCount());
1112	>	clone.lock();
1113	>	clone.lock();
1114	>	assertTrue(clone.isLocked());
1115	>	assertEquals(2, clone.getHoldCount());
1116	>	assertEquals(1, lock.getHoldCount());
1117	>	clone.unlock();
1118	>	clone.unlock();
1119	>	assertTrue(lock.isLocked());
1120	>	assertFalse(clone.isLocked());
1121		}
1122
1123		/**
1124		* toString indicates current lock state
1125		*/
1126	<	public void testToString() {
1127	<	ReentrantLock lock = new ReentrantLock();
1128	<	String us = lock.toString();
1129	<	assertTrue(us.indexOf("Unlocked") >= 0);
1126	>	public void testToString()      { testToString(false); }
1127	>	public void testToString_fair() { testToString(true); }
1128	>	public void testToString(boolean fair) {
1129	>	final ReentrantLock lock = new ReentrantLock(fair);
1130	>	assertTrue(lock.toString().contains("Unlocked"));
1131		lock.lock();
1132	<	String ls = lock.toString();
1133	<	assertTrue(ls.indexOf("Locked") >= 0);
1132	>	assertTrue(lock.toString().contains("Locked by"));
1133	>	lock.unlock();
1134	>	assertTrue(lock.toString().contains("Unlocked"));
1135		}
1077	–
1136		}

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