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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.2 by dl, Sat Sep 6 19:36:05 2003 UTC vs.
Revision 1.56 by jsr166, Mon Feb 2 04:50:55 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
9	<	import java.util.concurrent.locks.*;
10	<	import java.util.concurrent.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	public class ReentrantLockTest extends TestCase {
12	<	static int HOLD_COUNT_TEST_LIMIT = 20;
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	+	public class ReentrantLockTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	junit.textui.TestRunner.run(suite());
26		}
18	–
27		public static Test suite() {
28	<	return new TestSuite(ReentrantLockTest.class);
28	>	return new TestSuite(ReentrantLockTest.class);
29		}
30
31	<	private static long SHORT_DELAY_MS = 100;
32	<	private static long MEDIUM_DELAY_MS = 1000;
33	<	private static long LONG_DELAY_MS = 10000;
34	<
35	<	/*
36	<	* Unlocks an unlocked lock, throws Illegal Monitor State
37	<	*
38	<	*/
31	<
32	<	public void testIllegalMonitorStateException(){
33	<	ReentrantLock rl = new ReentrantLock();
34	<	try{
35	<	rl.unlock();
36	<	fail("Should of thown Illegal Monitor State Exception");
37	<
38	<	}catch(IllegalMonitorStateException sucess){}
39	<
40	<
41	<	}
42	<
43	<	/*
44	<	* makes a lock, locks it, tries to aquire the lock in another thread
45	<	* interrupts that thread and waits for an interrupted Exception to
46	<	* be thrown.
47	<	*/
48	<
49	<	public void testInterruptedException(){
50	<	final ReentrantLock lock = new ReentrantLock();
51	<	lock.lock();
52	<	Thread t = new Thread(new Runnable() {
53	<	public void run(){
54	<	try{
55	<	lock.lockInterruptibly();
56	<	fail("should throw");
57	<	}catch(InterruptedException sucess){}
58	<	}
59	<	});
60	<	t.start();
61	<	t.interrupt();
62	<	lock.unlock();
63	<	}
64	<
65	<	/*
66	<	* tests for interrupted exception on a timed wait
67	<	*
68	<	*/
69	<
70	<
71	<	public void testInterruptedException2(){
72	<	final ReentrantLock lock = new ReentrantLock();
73	<	lock.lock();
74	<	Thread t = new Thread(new Runnable() {
75	<	public void run(){
76	<	try{
77	<	lock.tryLock(1000,TimeUnit.MILLISECONDS);
78	<	fail("should throw");
79	<	}catch(InterruptedException sucess){}
80	<	}
81	<	});
82	<	t.start();
83	<	t.interrupt();
84	<	}
85	<
86	<
87	<	public void testGetHoldCount() {
88	<	ReentrantLock lock = new ReentrantLock();
89	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
90	<	lock.lock();
91	<	assertEquals(i,lock.getHoldCount());
92	<	}
93	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
94	<	lock.unlock();
95	<	assertEquals(i-1,lock.getHoldCount());
96	<	}
97	<	}
98	<
99	<
100	<
101	<
102	<	public void testIsLocked() {
103	<	final ReentrantLock lock = new ReentrantLock();
104	<	lock.lock();
105	<	assertTrue(lock.isLocked());
106	<	lock.unlock();
107	<	assertFalse(lock.isLocked());
108	<	Thread t = new Thread(new Runnable() {
109	<	public void run() {
110	<	lock.lock();
111	<	try {
112	<	Thread.sleep(SHORT_DELAY_MS * 2);
113	<	}
114	<	catch(Exception e) {}
115	<	lock.unlock();
116	<	}
117	<	});
118	<	try{
119	<	t.start();
120	<	Thread.sleep(SHORT_DELAY_MS);
121	<	assertTrue(lock.isLocked());
122	<	t.join();
123	<	assertFalse(lock.isLocked());
124	<	} catch(Exception e){
125	<	fail("unexpected exception");
31	>	/**
32	>	* A checked runnable calling lockInterruptibly
33	>	*/
34	>	class InterruptibleLockRunnable extends CheckedRunnable {
35	>	final ReentrantLock lock;
36	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
37	>	public void realRun() throws InterruptedException {
38	>	lock.lockInterruptibly();
39		}
127	–
40		}
41
42	<	/*
43	<	* current thread locks interruptibly the thread
44	<	* another thread tries to aquire the lock and blocks
45	<	* on the call. interrupt the attempted aquireLock
46	<	* assert that the first lock() call actually locked the lock
47	<	* assert that the current thread is the one holding the lock
48	<	*/
49	<
50	<	public void testLockedInterruptibly() {
51	<	final ReentrantLock lock = new ReentrantLock();
140	<	try {lock.lockInterruptibly();} catch(Exception e) {}
141	<	Thread t = new Thread(new Runnable() {
142	<	public void run() {
143	<	try {
144	<	lock.lockInterruptibly();
145	<	fail("Failed to generate an Interrupted Exception");
146	<	}
147	<	catch(InterruptedException e) {}
148	<	}
149	<	});
150	<	t.start();
151	<	t.interrupt();
152	<	assertTrue(lock.isLocked());
153	<	assertTrue(lock.isHeldByCurrentThread());
42	>	/**
43	>	* A checked runnable calling lockInterruptibly that expects to be
44	>	* interrupted
45	>	*/
46	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
47	>	final ReentrantLock lock;
48	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
49	>	public void realRun() throws InterruptedException {
50	>	lock.lockInterruptibly();
51	>	}
52		}
53
54	<	public void testAwait_IllegalMonitor() {
55	<	final ReentrantLock lock = new ReentrantLock();
56	<	final Condition c = lock.newCondition();
57	<	try {
58	<	c.await();
59	<	fail("should throw");
54	>	/**
55	>	* Subclass to expose protected methods
56	>	*/
57	>	static class PublicReentrantLock extends ReentrantLock {
58	>	PublicReentrantLock() { super(); }
59	>	PublicReentrantLock(boolean fair) { super(fair); }
60	>	public Thread getOwner() {
61	>	return super.getOwner();
62		}
63	<	catch (IllegalMonitorStateException success) {
63	>	public Collection<Thread> getQueuedThreads() {
64	>	return super.getQueuedThreads();
65		}
66	<	catch (Exception ex) {
67	<	fail("should throw IMSE");
66	>	public Collection<Thread> getWaitingThreads(Condition c) {
67	>	return super.getWaitingThreads(c);
68		}
69		}
70
71	<	public void testSignal_IllegalMonitor() {
72	<	final ReentrantLock lock = new ReentrantLock();
73	<	final Condition c = lock.newCondition();
74	<	try {
75	<	c.signal();
76	<	fail("should throw");
77	<	}
78	<	catch (IllegalMonitorStateException success) {
71	>	/**
72	>	* Releases write lock, checking that it had a hold count of 1.
73	>	*/
74	>	void releaseLock(PublicReentrantLock lock) {
75	>	assertLockedByMoi(lock);
76	>	lock.unlock();
77	>	assertFalse(lock.isHeldByCurrentThread());
78	>	assertNotLocked(lock);
79	>	}
80	>
81	>	/**
82	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
83	>	*/
84	>	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
85	>	long startTime = System.nanoTime();
86	>	while (!lock.hasQueuedThread(t)) {
87	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
88	>	throw new AssertionFailedError("timed out");
89	>	Thread.yield();
90		}
91	<	catch (Exception ex) {
92	<	fail("should throw IMSE");
91	>	assertTrue(t.isAlive());
92	>	assertNotSame(t, lock.getOwner());
93	>	}
94	>
95	>	/**
96	>	* Checks that lock is not locked.
97	>	*/
98	>	void assertNotLocked(PublicReentrantLock lock) {
99	>	assertFalse(lock.isLocked());
100	>	assertFalse(lock.isHeldByCurrentThread());
101	>	assertNull(lock.getOwner());
102	>	assertEquals(0, lock.getHoldCount());
103	>	}
104	>
105	>	/**
106	>	* Checks that lock is locked by the given thread.
107	>	*/
108	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
109	>	assertTrue(lock.isLocked());
110	>	assertSame(t, lock.getOwner());
111	>	assertEquals(t == Thread.currentThread(),
112	>	lock.isHeldByCurrentThread());
113	>	assertEquals(t == Thread.currentThread(),
114	>	lock.getHoldCount() > 0);
115	>	}
116	>
117	>	/**
118	>	* Checks that lock is locked by the current thread.
119	>	*/
120	>	void assertLockedByMoi(PublicReentrantLock lock) {
121	>	assertLockedBy(lock, Thread.currentThread());
122	>	}
123	>
124	>	/**
125	>	* Checks that condition c has no waiters.
126	>	*/
127	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
128	>	assertHasWaiters(lock, c, new Thread[] {});
129	>	}
130	>
131	>	/**
132	>	* Checks that condition c has exactly the given waiter threads.
133	>	*/
134	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
135	>	Thread... threads) {
136	>	lock.lock();
137	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
138	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
139	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
140	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
141	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
142	>	new HashSet<Thread>(Arrays.asList(threads)));
143	>	lock.unlock();
144	>	}
145	>
146	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
147	>
148	>	/**
149	>	* Awaits condition using the specified AwaitMethod.
150	>	*/
151	>	void await(Condition c, AwaitMethod awaitMethod)
152	>	throws InterruptedException {
153	>	long timeoutMillis = 2 * LONG_DELAY_MS;
154	>	switch (awaitMethod) {
155	>	case await:
156	>	c.await();
157	>	break;
158	>	case awaitTimed:
159	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
160	>	break;
161	>	case awaitNanos:
162	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
163	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
164	>	assertTrue(nanosRemaining > 0);
165	>	break;
166	>	case awaitUntil:
167	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
168	>	break;
169	>	default:
170	>	throw new AssertionError();
171		}
172		}
173
174	<	public void testAwaitNanos_Timeout() {
175	<	final ReentrantLock lock = new ReentrantLock();
176	<	final Condition c = lock.newCondition();
174	>	/**
175	>	* Constructor sets given fairness, and is in unlocked state
176	>	*/
177	>	public void testConstructor() {
178	>	PublicReentrantLock lock;
179	>
180	>	lock = new PublicReentrantLock();
181	>	assertFalse(lock.isFair());
182	>	assertNotLocked(lock);
183	>
184	>	lock = new PublicReentrantLock(true);
185	>	assertTrue(lock.isFair());
186	>	assertNotLocked(lock);
187	>
188	>	lock = new PublicReentrantLock(false);
189	>	assertFalse(lock.isFair());
190	>	assertNotLocked(lock);
191	>	}
192	>
193	>	/**
194	>	* locking an unlocked lock succeeds
195	>	*/
196	>	public void testLock()      { testLock(false); }
197	>	public void testLock_fair() { testLock(true); }
198	>	public void testLock(boolean fair) {
199	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
200	>	lock.lock();
201	>	assertLockedByMoi(lock);
202	>	releaseLock(lock);
203	>	}
204	>
205	>	/**
206	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
207	>	*/
208	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
209	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
210	>	public void testUnlock_IMSE(boolean fair) {
211	>	ReentrantLock lock = new ReentrantLock(fair);
212		try {
188	–	lock.lock();
189	–	long t = c.awaitNanos(100);
190	–	assertTrue(t <= 0);
213		lock.unlock();
214	<	}
215	<	catch (Exception ex) {
194	<	fail("unexpected exception");
195	<	}
214	>	shouldThrow();
215	>	} catch (IllegalMonitorStateException success) {}
216		}
217
218	<	public void testAwait_Timeout() {
219	<	final ReentrantLock lock = new ReentrantLock();
220	<	final Condition c = lock.newCondition();
218	>	/**
219	>	* tryLock on an unlocked lock succeeds
220	>	*/
221	>	public void testTryLock()      { testTryLock(false); }
222	>	public void testTryLock_fair() { testTryLock(true); }
223	>	public void testTryLock(boolean fair) {
224	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
225	>	assertTrue(lock.tryLock());
226	>	assertLockedByMoi(lock);
227	>	assertTrue(lock.tryLock());
228	>	assertLockedByMoi(lock);
229	>	lock.unlock();
230	>	releaseLock(lock);
231	>	}
232	>
233	>	/**
234	>	* hasQueuedThreads reports whether there are waiting threads
235	>	*/
236	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
237	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
238	>	public void testHasQueuedThreads(boolean fair) {
239	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
240	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
241	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
242	>	assertFalse(lock.hasQueuedThreads());
243	>	lock.lock();
244	>	assertFalse(lock.hasQueuedThreads());
245	>	t1.start();
246	>	waitForQueuedThread(lock, t1);
247	>	assertTrue(lock.hasQueuedThreads());
248	>	t2.start();
249	>	waitForQueuedThread(lock, t2);
250	>	assertTrue(lock.hasQueuedThreads());
251	>	t1.interrupt();
252	>	awaitTermination(t1);
253	>	assertTrue(lock.hasQueuedThreads());
254	>	lock.unlock();
255	>	awaitTermination(t2);
256	>	assertFalse(lock.hasQueuedThreads());
257	>	}
258	>
259	>	/**
260	>	* getQueueLength reports number of waiting threads
261	>	*/
262	>	public void testGetQueueLength()      { testGetQueueLength(false); }
263	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
264	>	public void testGetQueueLength(boolean fair) {
265	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
266	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
267	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
268	>	assertEquals(0, lock.getQueueLength());
269	>	lock.lock();
270	>	t1.start();
271	>	waitForQueuedThread(lock, t1);
272	>	assertEquals(1, lock.getQueueLength());
273	>	t2.start();
274	>	waitForQueuedThread(lock, t2);
275	>	assertEquals(2, lock.getQueueLength());
276	>	t1.interrupt();
277	>	awaitTermination(t1);
278	>	assertEquals(1, lock.getQueueLength());
279	>	lock.unlock();
280	>	awaitTermination(t2);
281	>	assertEquals(0, lock.getQueueLength());
282	>	}
283	>
284	>	/**
285	>	* hasQueuedThread(null) throws NPE
286	>	*/
287	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
288	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
289	>	public void testHasQueuedThreadNPE(boolean fair) {
290	>	final ReentrantLock lock = new ReentrantLock(fair);
291		try {
292	+	lock.hasQueuedThread(null);
293	+	shouldThrow();
294	+	} catch (NullPointerException success) {}
295	+	}
296	+
297	+	/**
298	+	* hasQueuedThread reports whether a thread is queued
299	+	*/
300	+	public void testHasQueuedThread()      { testHasQueuedThread(false); }
301	+	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
302	+	public void testHasQueuedThread(boolean fair) {
303	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
304	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
305	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
306	+	assertFalse(lock.hasQueuedThread(t1));
307	+	assertFalse(lock.hasQueuedThread(t2));
308	+	lock.lock();
309	+	t1.start();
310	+	waitForQueuedThread(lock, t1);
311	+	assertTrue(lock.hasQueuedThread(t1));
312	+	assertFalse(lock.hasQueuedThread(t2));
313	+	t2.start();
314	+	waitForQueuedThread(lock, t2);
315	+	assertTrue(lock.hasQueuedThread(t1));
316	+	assertTrue(lock.hasQueuedThread(t2));
317	+	t1.interrupt();
318	+	awaitTermination(t1);
319	+	assertFalse(lock.hasQueuedThread(t1));
320	+	assertTrue(lock.hasQueuedThread(t2));
321	+	lock.unlock();
322	+	awaitTermination(t2);
323	+	assertFalse(lock.hasQueuedThread(t1));
324	+	assertFalse(lock.hasQueuedThread(t2));
325	+	}
326	+
327	+	/**
328	+	* getQueuedThreads includes waiting threads
329	+	*/
330	+	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
331	+	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
332	+	public void testGetQueuedThreads(boolean fair) {
333	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
334	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
335	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
336	+	assertTrue(lock.getQueuedThreads().isEmpty());
337	+	lock.lock();
338	+	assertTrue(lock.getQueuedThreads().isEmpty());
339	+	t1.start();
340	+	waitForQueuedThread(lock, t1);
341	+	assertEquals(1, lock.getQueuedThreads().size());
342	+	assertTrue(lock.getQueuedThreads().contains(t1));
343	+	t2.start();
344	+	waitForQueuedThread(lock, t2);
345	+	assertEquals(2, lock.getQueuedThreads().size());
346	+	assertTrue(lock.getQueuedThreads().contains(t1));
347	+	assertTrue(lock.getQueuedThreads().contains(t2));
348	+	t1.interrupt();
349	+	awaitTermination(t1);
350	+	assertFalse(lock.getQueuedThreads().contains(t1));
351	+	assertTrue(lock.getQueuedThreads().contains(t2));
352	+	assertEquals(1, lock.getQueuedThreads().size());
353	+	lock.unlock();
354	+	awaitTermination(t2);
355	+	assertTrue(lock.getQueuedThreads().isEmpty());
356	+	}
357	+
358	+	/**
359	+	* timed tryLock is interruptible
360	+	*/
361	+	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
362	+	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
363	+	public void testTryLock_Interruptible(boolean fair) {
364	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
365	+	lock.lock();
366	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
367	+	public void realRun() throws InterruptedException {
368	+	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
369	+	}});
370	+
371	+	waitForQueuedThread(lock, t);
372	+	t.interrupt();
373	+	awaitTermination(t);
374	+	releaseLock(lock);
375	+	}
376	+
377	+	/**
378	+	* tryLock on a locked lock fails
379	+	*/
380	+	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
381	+	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
382	+	public void testTryLockWhenLocked(boolean fair) {
383	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
384	+	lock.lock();
385	+	Thread t = newStartedThread(new CheckedRunnable() {
386	+	public void realRun() {
387	+	assertFalse(lock.tryLock());
388	+	}});
389	+
390	+	awaitTermination(t);
391	+	releaseLock(lock);
392	+	}
393	+
394	+	/**
395	+	* Timed tryLock on a locked lock times out
396	+	*/
397	+	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
398	+	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
399	+	public void testTryLock_Timeout(boolean fair) {
400	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
401	+	lock.lock();
402	+	Thread t = newStartedThread(new CheckedRunnable() {
403	+	public void realRun() throws InterruptedException {
404	+	long startTime = System.nanoTime();
405	+	long timeoutMillis = 10;
406	+	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
407	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
408	+	}});
409	+
410	+	awaitTermination(t);
411	+	releaseLock(lock);
412	+	}
413	+
414	+	/**
415	+	* getHoldCount returns number of recursive holds
416	+	*/
417	+	public void testGetHoldCount()      { testGetHoldCount(false); }
418	+	public void testGetHoldCount_fair() { testGetHoldCount(true); }
419	+	public void testGetHoldCount(boolean fair) {
420	+	ReentrantLock lock = new ReentrantLock(fair);
421	+	for (int i = 1; i <= SIZE; i++) {
422		lock.lock();
423	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
204	<	lock.unlock();
423	>	assertEquals(i, lock.getHoldCount());
424		}
425	<	catch (Exception ex) {
426	<	fail("unexpected exception");
425	>	for (int i = SIZE; i > 0; i--) {
426	>	lock.unlock();
427	>	assertEquals(i-1, lock.getHoldCount());
428		}
429		}
430
431	<	public void testAwaitUntil_Timeout() {
432	<	final ReentrantLock lock = new ReentrantLock();
433	<	final Condition c = lock.newCondition();
431	>	/**
432	>	* isLocked is true when locked and false when not
433	>	*/
434	>	public void testIsLocked()      { testIsLocked(false); }
435	>	public void testIsLocked_fair() { testIsLocked(true); }
436	>	public void testIsLocked(boolean fair) {
437		try {
438	+	final ReentrantLock lock = new ReentrantLock(fair);
439	+	assertFalse(lock.isLocked());
440		lock.lock();
441	<	java.util.Date d = new java.util.Date();
442	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
441	>	assertTrue(lock.isLocked());
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444		lock.unlock();
445	+	assertTrue(lock.isLocked());
446	+	lock.unlock();
447	+	assertFalse(lock.isLocked());
448	+	final CyclicBarrier barrier = new CyclicBarrier(2);
449	+	Thread t = newStartedThread(new CheckedRunnable() {
450	+	public void realRun() throws Exception {
451	+	lock.lock();
452	+	assertTrue(lock.isLocked());
453	+	barrier.await();
454	+	barrier.await();
455	+	lock.unlock();
456	+	}});
457	+
458	+	barrier.await();
459	+	assertTrue(lock.isLocked());
460	+	barrier.await();
461	+	awaitTermination(t);
462	+	assertFalse(lock.isLocked());
463	+	} catch (Exception e) {
464	+	threadUnexpectedException(e);
465		}
466	<	catch (Exception ex) {
467	<	fail("unexpected exception");
466	>	}
467	>
468	>	/**
469	>	* lockInterruptibly succeeds when unlocked, else is interruptible
470	>	*/
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	>	lock.lockInterruptibly();
477	>	} catch (InterruptedException ie) {
478	>	threadUnexpectedException(ie);
479	>	}
480	>	assertLockedByMoi(lock);
481	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
482	>	waitForQueuedThread(lock, t);
483	>	t.interrupt();
484	>	assertTrue(lock.isLocked());
485	>	assertTrue(lock.isHeldByCurrentThread());
486	>	awaitTermination(t);
487	>	releaseLock(lock);
488	>	}
489	>
490	>	/**
491	>	* Calling await without holding lock throws IllegalMonitorStateException
492	>	*/
493	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
494	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
495	>	public void testAwait_IMSE(boolean fair) {
496	>	final ReentrantLock lock = new ReentrantLock(fair);
497	>	final Condition c = lock.newCondition();
498	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
499	>	long startTime = System.nanoTime();
500	>	try {
501	>	await(c, awaitMethod);
502	>	shouldThrow();
503	>	} catch (IllegalMonitorStateException success) {
504	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
505	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
506		}
507		}
508
509	<	public void testAwait() {
510	<	final ReentrantLock lock = new ReentrantLock();
509	>	/**
510	>	* Calling signal without holding lock throws IllegalMonitorStateException
511	>	*/
512	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
513	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
514	>	public void testSignal_IMSE(boolean fair) {
515	>	final ReentrantLock lock = new ReentrantLock(fair);
516		final Condition c = lock.newCondition();
517	<	Thread t = new Thread(new Runnable() {
518	<	public void run() {
519	<	try {
520	<	lock.lock();
521	<	c.await();
233	<	lock.unlock();
234	<	}
235	<	catch(InterruptedException e) {
236	<	fail("unexpected exception");
237	<	}
238	<	}
239	<	});
517	>	try {
518	>	c.signal();
519	>	shouldThrow();
520	>	} catch (IllegalMonitorStateException success) {}
521	>	}
522
523	+	/**
524	+	* awaitNanos without a signal times out
525	+	*/
526	+	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
527	+	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
528	+	public void testAwaitNanos_Timeout(boolean fair) {
529		try {
530	<	t.start();
531	<	Thread.sleep(SHORT_DELAY_MS);
530	>	final ReentrantLock lock = new ReentrantLock(fair);
531	>	final Condition c = lock.newCondition();
532		lock.lock();
533	<	c.signal();
533	>	long startTime = System.nanoTime();
534	>	long timeoutMillis = 10;
535	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
536	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
537	>	assertTrue(nanosRemaining <= 0);
538	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
539		lock.unlock();
540	<	t.join(SHORT_DELAY_MS);
541	<	assertFalse(t.isAlive());
249	<	}
250	<	catch (Exception ex) {
251	<	fail("unexpected exception");
540	>	} catch (InterruptedException e) {
541	>	threadUnexpectedException(e);
542		}
543		}
544
545	<	public void testAwaitUninterruptibly() {
546	<	final ReentrantLock lock = new ReentrantLock();
547	<	final Condition c = lock.newCondition();
548	<	Thread t = new Thread(new Runnable() {
549	<	public void run() {
550	<	lock.lock();
261	<	c.awaitUninterruptibly();
262	<	lock.unlock();
263	<	}
264	<	});
265	<
545	>	/**
546	>	* timed await without a signal times out
547	>	*/
548	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
549	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
550	>	public void testAwait_Timeout(boolean fair) {
551		try {
552	<	t.start();
553	<	Thread.sleep(SHORT_DELAY_MS);
269	<	t.interrupt();
552	>	final ReentrantLock lock = new ReentrantLock(fair);
553	>	final Condition c = lock.newCondition();
554		lock.lock();
555	<	c.signal();
555	>	long startTime = System.nanoTime();
556	>	long timeoutMillis = 10;
557	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
558	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
559		lock.unlock();
560	<	t.join(SHORT_DELAY_MS);
561	<	assertFalse(t.isAlive());
560	>	} catch (InterruptedException e) {
561	>	threadUnexpectedException(e);
562		}
563	<	catch (Exception ex) {
564	<	fail("unexpected exception");
563	>	}
564	>
565	>	/**
566	>	* awaitUntil without a signal times out
567	>	*/
568	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
569	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
570	>	public void testAwaitUntil_Timeout(boolean fair) {
571	>	try {
572	>	final ReentrantLock lock = new ReentrantLock(fair);
573	>	final Condition c = lock.newCondition();
574	>	lock.lock();
575	>	long startTime = System.nanoTime();
576	>	long timeoutMillis = 10;
577	>	java.util.Date d = new java.util.Date();
578	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
579	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
580	>	lock.unlock();
581	>	} catch (InterruptedException e) {
582	>	threadUnexpectedException(e);
583		}
584		}
585
586	<	public void testAwait_Interrupt() {
587	<	final ReentrantLock lock = new ReentrantLock();
586	>	/**
587	>	* await returns when signalled
588	>	*/
589	>	public void testAwait()      { testAwait(false); }
590	>	public void testAwait_fair() { testAwait(true); }
591	>	public void testAwait(boolean fair) {
592	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
593		final Condition c = lock.newCondition();
594	<	Thread t = new Thread(new Runnable() {
595	<	public void run() {
596	<	try {
597	<	lock.lock();
598	<	c.await();
599	<	lock.unlock();
600	<	fail("should throw");
601	<	}
602	<	catch(InterruptedException success) {
603	<	}
604	<	}
605	<	});
594	>	final CountDownLatch locked = new CountDownLatch(1);
595	>	Thread t = newStartedThread(new CheckedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	lock.lock();
598	>	locked.countDown();
599	>	c.await();
600	>	lock.unlock();
601	>	}});
602	>
603	>	await(locked);
604	>	lock.lock();
605	>	assertHasWaiters(lock, c, t);
606	>	c.signal();
607	>	assertHasNoWaiters(lock, c);
608	>	assertTrue(t.isAlive());
609	>	lock.unlock();
610	>	awaitTermination(t);
611	>	}
612
613	+	/**
614	+	* hasWaiters throws NPE if null
615	+	*/
616	+	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
617	+	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
618	+	public void testHasWaitersNPE(boolean fair) {
619	+	final ReentrantLock lock = new ReentrantLock(fair);
620		try {
621	<	t.start();
622	<	Thread.sleep(SHORT_DELAY_MS);
623	<	t.interrupt();
301	<	t.join(SHORT_DELAY_MS);
302	<	assertFalse(t.isAlive());
303	<	}
304	<	catch (Exception ex) {
305	<	fail("unexpected exception");
306	<	}
621	>	lock.hasWaiters(null);
622	>	shouldThrow();
623	>	} catch (NullPointerException success) {}
624		}
625
626	<	public void testAwaitNanos_Interrupt() {
627	<	final ReentrantLock lock = new ReentrantLock();
626	>	/**
627	>	* getWaitQueueLength throws NPE if null
628	>	*/
629	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
630	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
631	>	public void testGetWaitQueueLengthNPE(boolean fair) {
632	>	final ReentrantLock lock = new ReentrantLock(fair);
633	>	try {
634	>	lock.getWaitQueueLength(null);
635	>	shouldThrow();
636	>	} catch (NullPointerException success) {}
637	>	}
638	>
639	>	/**
640	>	* getWaitingThreads throws NPE if null
641	>	*/
642	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
643	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
644	>	public void testGetWaitingThreadsNPE(boolean fair) {
645	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
646	>	try {
647	>	lock.getWaitingThreads(null);
648	>	shouldThrow();
649	>	} catch (NullPointerException success) {}
650	>	}
651	>
652	>	/**
653	>	* hasWaiters throws IllegalArgumentException if not owned
654	>	*/
655	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
656	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
657	>	public void testHasWaitersIAE(boolean fair) {
658	>	final ReentrantLock lock = new ReentrantLock(fair);
659		final Condition c = lock.newCondition();
660	<	Thread t = new Thread(new Runnable() {
661	<	public void run() {
662	<	try {
663	<	lock.lock();
664	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
317	<	lock.unlock();
318	<	fail("should throw");
319	<	}
320	<	catch(InterruptedException success) {
321	<	}
322	<	}
323	<	});
324	<
325	<	try {
326	<	t.start();
327	<	Thread.sleep(SHORT_DELAY_MS);
328	<	t.interrupt();
329	<	t.join(SHORT_DELAY_MS);
330	<	assertFalse(t.isAlive());
331	<	}
332	<	catch (Exception ex) {
333	<	fail("unexpected exception");
334	<	}
660	>	final ReentrantLock lock2 = new ReentrantLock(fair);
661	>	try {
662	>	lock2.hasWaiters(c);
663	>	shouldThrow();
664	>	} catch (IllegalArgumentException success) {}
665		}
666
667	<	public void testAwaitUntil_Interrupt() {
668	<	final ReentrantLock lock = new ReentrantLock();
669	<	final Condition c = lock.newCondition();
670	<	Thread t = new Thread(new Runnable() {
671	<	public void run() {
672	<	try {
673	<	lock.lock();
674	<	java.util.Date d = new java.util.Date();
675	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
676	<	lock.unlock();
677	<	fail("should throw");
678	<	}
679	<	catch(InterruptedException success) {
350	<	}
351	<	}
352	<	});
667	>	/**
668	>	* hasWaiters throws IllegalMonitorStateException if not locked
669	>	*/
670	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
671	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
672	>	public void testHasWaitersIMSE(boolean fair) {
673	>	final ReentrantLock lock = new ReentrantLock(fair);
674	>	final Condition c = lock.newCondition();
675	>	try {
676	>	lock.hasWaiters(c);
677	>	shouldThrow();
678	>	} catch (IllegalMonitorStateException success) {}
679	>	}
680
681	+	/**
682	+	* getWaitQueueLength throws IllegalArgumentException if not owned
683	+	*/
684	+	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
685	+	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
686	+	public void testGetWaitQueueLengthIAE(boolean fair) {
687	+	final ReentrantLock lock = new ReentrantLock(fair);
688	+	final Condition c = lock.newCondition();
689	+	final ReentrantLock lock2 = new ReentrantLock(fair);
690		try {
691	<	t.start();
692	<	Thread.sleep(SHORT_DELAY_MS);
693	<	t.interrupt();
358	<	t.join(SHORT_DELAY_MS);
359	<	assertFalse(t.isAlive());
360	<	}
361	<	catch (Exception ex) {
362	<	fail("unexpected exception");
363	<	}
691	>	lock2.getWaitQueueLength(c);
692	>	shouldThrow();
693	>	} catch (IllegalArgumentException success) {}
694		}
695
696	<	public void testSignalAll() {
697	<	final ReentrantLock lock = new ReentrantLock();
696	>	/**
697	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
698	>	*/
699	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
700	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
701	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
702	>	final ReentrantLock lock = new ReentrantLock(fair);
703		final Condition c = lock.newCondition();
704	<	Thread t1 = new Thread(new Runnable() {
705	<	public void run() {
706	<	try {
707	<	lock.lock();
708	<	c.await();
709	<	lock.unlock();
710	<	}
711	<	catch(InterruptedException e) {
712	<	fail("unexpected exception");
713	<	}
714	<	}
715	<	});
716	<
717	<	Thread t2 = new Thread(new Runnable() {
718	<	public void run() {
719	<	try {
720	<	lock.lock();
721	<	c.await();
722	<	lock.unlock();
723	<	}
389	<	catch(InterruptedException e) {
390	<	fail("unexpected exception");
391	<	}
392	<	}
393	<	});
704	>	try {
705	>	lock.getWaitQueueLength(c);
706	>	shouldThrow();
707	>	} catch (IllegalMonitorStateException success) {}
708	>	}
709	>
710	>	/**
711	>	* getWaitingThreads throws IllegalArgumentException if not owned
712	>	*/
713	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
714	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
715	>	public void testGetWaitingThreadsIAE(boolean fair) {
716	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
717	>	final Condition c = lock.newCondition();
718	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
719	>	try {
720	>	lock2.getWaitingThreads(c);
721	>	shouldThrow();
722	>	} catch (IllegalArgumentException success) {}
723	>	}
724
725	+	/**
726	+	* getWaitingThreads throws IllegalMonitorStateException if not locked
727	+	*/
728	+	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
729	+	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
730	+	public void testGetWaitingThreadsIMSE(boolean fair) {
731	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
732	+	final Condition c = lock.newCondition();
733		try {
734	<	t1.start();
735	<	t2.start();
736	<	Thread.sleep(SHORT_DELAY_MS);
399	<	lock.lock();
400	<	c.signalAll();
401	<	lock.unlock();
402	<	t1.join(SHORT_DELAY_MS);
403	<	t2.join(SHORT_DELAY_MS);
404	<	assertFalse(t1.isAlive());
405	<	assertFalse(t2.isAlive());
406	<	}
407	<	catch (Exception ex) {
408	<	fail("unexpected exception");
409	<	}
734	>	lock.getWaitingThreads(c);
735	>	shouldThrow();
736	>	} catch (IllegalMonitorStateException success) {}
737		}
738
739	+	/**
740	+	* hasWaiters returns true when a thread is waiting, else false
741	+	*/
742	+	public void testHasWaiters()      { testHasWaiters(false); }
743	+	public void testHasWaiters_fair() { testHasWaiters(true); }
744	+	public void testHasWaiters(boolean fair) {
745	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
746	+	final Condition c = lock.newCondition();
747	+	final CountDownLatch pleaseSignal = new CountDownLatch(1);
748	+	Thread t = newStartedThread(new CheckedRunnable() {
749	+	public void realRun() throws InterruptedException {
750	+	lock.lock();
751	+	assertHasNoWaiters(lock, c);
752	+	assertFalse(lock.hasWaiters(c));
753	+	pleaseSignal.countDown();
754	+	c.await();
755	+	assertHasNoWaiters(lock, c);
756	+	assertFalse(lock.hasWaiters(c));
757	+	lock.unlock();
758	+	}});
759	+
760	+	await(pleaseSignal);
761	+	lock.lock();
762	+	assertHasWaiters(lock, c, t);
763	+	assertTrue(lock.hasWaiters(c));
764	+	c.signal();
765	+	assertHasNoWaiters(lock, c);
766	+	assertFalse(lock.hasWaiters(c));
767	+	lock.unlock();
768	+	awaitTermination(t);
769	+	assertHasNoWaiters(lock, c);
770	+	}
771	+
772	+	/**
773	+	* getWaitQueueLength returns number of waiting threads
774	+	*/
775	+	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
776	+	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
777	+	public void testGetWaitQueueLength(boolean fair) {
778	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
779	+	final Condition c = lock.newCondition();
780	+	final CountDownLatch locked1 = new CountDownLatch(1);
781	+	final CountDownLatch locked2 = new CountDownLatch(1);
782	+	Thread t1 = new Thread(new CheckedRunnable() {
783	+	public void realRun() throws InterruptedException {
784	+	lock.lock();
785	+	assertFalse(lock.hasWaiters(c));
786	+	assertEquals(0, lock.getWaitQueueLength(c));
787	+	locked1.countDown();
788	+	c.await();
789	+	lock.unlock();
790	+	}});
791	+
792	+	Thread t2 = new Thread(new CheckedRunnable() {
793	+	public void realRun() throws InterruptedException {
794	+	lock.lock();
795	+	assertTrue(lock.hasWaiters(c));
796	+	assertEquals(1, lock.getWaitQueueLength(c));
797	+	locked2.countDown();
798	+	c.await();
799	+	lock.unlock();
800	+	}});
801	+
802	+	lock.lock();
803	+	assertEquals(0, lock.getWaitQueueLength(c));
804	+	lock.unlock();
805	+
806	+	t1.start();
807	+	await(locked1);
808	+
809	+	lock.lock();
810	+	assertHasWaiters(lock, c, t1);
811	+	assertEquals(1, lock.getWaitQueueLength(c));
812	+	lock.unlock();
813	+
814	+	t2.start();
815	+	await(locked2);
816	+
817	+	lock.lock();
818	+	assertHasWaiters(lock, c, t1, t2);
819	+	assertEquals(2, lock.getWaitQueueLength(c));
820	+	c.signalAll();
821	+	assertHasNoWaiters(lock, c);
822	+	lock.unlock();
823	+
824	+	awaitTermination(t1);
825	+	awaitTermination(t2);
826	+
827	+	assertHasNoWaiters(lock, c);
828	+	}
829	+
830	+	/**
831	+	* getWaitingThreads returns only and all waiting threads
832	+	*/
833	+	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
834	+	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
835	+	public void testGetWaitingThreads(boolean fair) {
836	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
837	+	final Condition c = lock.newCondition();
838	+	final CountDownLatch locked1 = new CountDownLatch(1);
839	+	final CountDownLatch locked2 = new CountDownLatch(1);
840	+	Thread t1 = new Thread(new CheckedRunnable() {
841	+	public void realRun() throws InterruptedException {
842	+	lock.lock();
843	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
844	+	locked1.countDown();
845	+	c.await();
846	+	lock.unlock();
847	+	}});
848	+
849	+	Thread t2 = new Thread(new CheckedRunnable() {
850	+	public void realRun() throws InterruptedException {
851	+	lock.lock();
852	+	assertFalse(lock.getWaitingThreads(c).isEmpty());
853	+	locked2.countDown();
854	+	c.await();
855	+	lock.unlock();
856	+	}});
857	+
858	+	lock.lock();
859	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
860	+	lock.unlock();
861	+
862	+	t1.start();
863	+	await(locked1);
864	+
865	+	lock.lock();
866	+	assertHasWaiters(lock, c, t1);
867	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
868	+	assertFalse(lock.getWaitingThreads(c).contains(t2));
869	+	assertEquals(1, lock.getWaitingThreads(c).size());
870	+	lock.unlock();
871	+
872	+	t2.start();
873	+	await(locked2);
874	+
875	+	lock.lock();
876	+	assertHasWaiters(lock, c, t1, t2);
877	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
878	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
879	+	assertEquals(2, lock.getWaitingThreads(c).size());
880	+	c.signalAll();
881	+	assertHasNoWaiters(lock, c);
882	+	lock.unlock();
883	+
884	+	awaitTermination(t1);
885	+	awaitTermination(t2);
886	+
887	+	assertHasNoWaiters(lock, c);
888	+	}
889	+
890	+	/**
891	+	* awaitUninterruptibly is uninterruptible
892	+	*/
893	+	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
894	+	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
895	+	public void testAwaitUninterruptibly(boolean fair) {
896	+	final ReentrantLock lock = new ReentrantLock(fair);
897	+	final Condition c = lock.newCondition();
898	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
899	+
900	+	Thread t1 = newStartedThread(new CheckedRunnable() {
901	+	public void realRun() {
902	+	// Interrupt before awaitUninterruptibly
903	+	lock.lock();
904	+	pleaseInterrupt.countDown();
905	+	Thread.currentThread().interrupt();
906	+	c.awaitUninterruptibly();
907	+	assertTrue(Thread.interrupted());
908	+	lock.unlock();
909	+	}});
910	+
911	+	Thread t2 = newStartedThread(new CheckedRunnable() {
912	+	public void realRun() {
913	+	// Interrupt during awaitUninterruptibly
914	+	lock.lock();
915	+	pleaseInterrupt.countDown();
916	+	c.awaitUninterruptibly();
917	+	assertTrue(Thread.interrupted());
918	+	lock.unlock();
919	+	}});
920	+
921	+	await(pleaseInterrupt);
922	+	lock.lock();
923	+	lock.unlock();
924	+	t2.interrupt();
925	+
926	+	assertThreadStaysAlive(t1);
927	+	assertTrue(t2.isAlive());
928	+
929	+	lock.lock();
930	+	c.signalAll();
931	+	lock.unlock();
932	+
933	+	awaitTermination(t1);
934	+	awaitTermination(t2);
935	+	}
936	+
937	+	/**
938	+	* await/awaitNanos/awaitUntil is interruptible
939	+	*/
940	+	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
941	+	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
942	+	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
943	+	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
944	+	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
945	+	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
946	+	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
947	+	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
948	+	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
949	+	final PublicReentrantLock lock =
950	+	new PublicReentrantLock(fair);
951	+	final Condition c = lock.newCondition();
952	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
953	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
954	+	public void realRun() throws InterruptedException {
955	+	lock.lock();
956	+	assertLockedByMoi(lock);
957	+	assertHasNoWaiters(lock, c);
958	+	pleaseInterrupt.countDown();
959	+	try {
960	+	await(c, awaitMethod);
961	+	} finally {
962	+	assertLockedByMoi(lock);
963	+	assertHasNoWaiters(lock, c);
964	+	lock.unlock();
965	+	assertFalse(Thread.interrupted());
966	+	}
967	+	}});
968	+
969	+	await(pleaseInterrupt);
970	+	assertHasWaiters(lock, c, t);
971	+	t.interrupt();
972	+	awaitTermination(t);
973	+	assertNotLocked(lock);
974	+	}
975	+
976	+	/**
977	+	* signalAll wakes up all threads
978	+	*/
979	+	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
980	+	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
981	+	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
982	+	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
983	+	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
984	+	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
985	+	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
986	+	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
987	+	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
988	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
989	+	final Condition c = lock.newCondition();
990	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
991	+	class Awaiter extends CheckedRunnable {
992	+	public void realRun() throws InterruptedException {
993	+	lock.lock();
994	+	pleaseSignal.countDown();
995	+	await(c, awaitMethod);
996	+	lock.unlock();
997	+	}
998	+	}
999	+
1000	+	Thread t1 = newStartedThread(new Awaiter());
1001	+	Thread t2 = newStartedThread(new Awaiter());
1002	+
1003	+	await(pleaseSignal);
1004	+	lock.lock();
1005	+	assertHasWaiters(lock, c, t1, t2);
1006	+	c.signalAll();
1007	+	assertHasNoWaiters(lock, c);
1008	+	lock.unlock();
1009	+	awaitTermination(t1);
1010	+	awaitTermination(t2);
1011	+	}
1012	+
1013	+	/**
1014	+	* signal wakes up waiting threads in FIFO order
1015	+	*/
1016	+	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1017	+	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1018	+	public void testSignalWakesFifo(boolean fair) {
1019	+	final PublicReentrantLock lock =
1020	+	new PublicReentrantLock(fair);
1021	+	final Condition c = lock.newCondition();
1022	+	final CountDownLatch locked1 = new CountDownLatch(1);
1023	+	final CountDownLatch locked2 = new CountDownLatch(1);
1024	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1025	+	public void realRun() throws InterruptedException {
1026	+	lock.lock();
1027	+	locked1.countDown();
1028	+	c.await();
1029	+	lock.unlock();
1030	+	}});
1031	+
1032	+	await(locked1);
1033	+
1034	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1035	+	public void realRun() throws InterruptedException {
1036	+	lock.lock();
1037	+	locked2.countDown();
1038	+	c.await();
1039	+	lock.unlock();
1040	+	}});
1041	+
1042	+	await(locked2);
1043	+
1044	+	lock.lock();
1045	+	assertHasWaiters(lock, c, t1, t2);
1046	+	assertFalse(lock.hasQueuedThreads());
1047	+	c.signal();
1048	+	assertHasWaiters(lock, c, t2);
1049	+	assertTrue(lock.hasQueuedThread(t1));
1050	+	assertFalse(lock.hasQueuedThread(t2));
1051	+	c.signal();
1052	+	assertHasNoWaiters(lock, c);
1053	+	assertTrue(lock.hasQueuedThread(t1));
1054	+	assertTrue(lock.hasQueuedThread(t2));
1055	+	lock.unlock();
1056	+	awaitTermination(t1);
1057	+	awaitTermination(t2);
1058	+	}
1059	+
1060	+	/**
1061	+	* await after multiple reentrant locking preserves lock count
1062	+	*/
1063	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1064	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1065	+	public void testAwaitLockCount(boolean fair) {
1066	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1067	+	final Condition c = lock.newCondition();
1068	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1069	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1070	+	public void realRun() throws InterruptedException {
1071	+	lock.lock();
1072	+	assertLockedByMoi(lock);
1073	+	assertEquals(1, lock.getHoldCount());
1074	+	pleaseSignal.countDown();
1075	+	c.await();
1076	+	assertLockedByMoi(lock);
1077	+	assertEquals(1, lock.getHoldCount());
1078	+	lock.unlock();
1079	+	}});
1080	+
1081	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1082	+	public void realRun() throws InterruptedException {
1083	+	lock.lock();
1084	+	lock.lock();
1085	+	assertLockedByMoi(lock);
1086	+	assertEquals(2, lock.getHoldCount());
1087	+	pleaseSignal.countDown();
1088	+	c.await();
1089	+	assertLockedByMoi(lock);
1090	+	assertEquals(2, lock.getHoldCount());
1091	+	lock.unlock();
1092	+	lock.unlock();
1093	+	}});
1094	+
1095	+	await(pleaseSignal);
1096	+	lock.lock();
1097	+	assertHasWaiters(lock, c, t1, t2);
1098	+	assertEquals(1, lock.getHoldCount());
1099	+	c.signalAll();
1100	+	assertHasNoWaiters(lock, c);
1101	+	lock.unlock();
1102	+	awaitTermination(t1);
1103	+	awaitTermination(t2);
1104	+	}
1105	+
1106	+	/**
1107	+	* A serialized lock deserializes as unlocked
1108	+	*/
1109	+	public void testSerialization()      { testSerialization(false); }
1110	+	public void testSerialization_fair() { testSerialization(true); }
1111	+	public void testSerialization(boolean fair) {
1112	+	ReentrantLock lock = new ReentrantLock(fair);
1113	+	lock.lock();
1114	+
1115	+	ReentrantLock clone = serialClone(lock);
1116	+	assertEquals(lock.isFair(), clone.isFair());
1117	+	assertTrue(lock.isLocked());
1118	+	assertFalse(clone.isLocked());
1119	+	assertEquals(1, lock.getHoldCount());
1120	+	assertEquals(0, clone.getHoldCount());
1121	+	clone.lock();
1122	+	clone.lock();
1123	+	assertTrue(clone.isLocked());
1124	+	assertEquals(2, clone.getHoldCount());
1125	+	assertEquals(1, lock.getHoldCount());
1126	+	clone.unlock();
1127	+	clone.unlock();
1128	+	assertTrue(lock.isLocked());
1129	+	assertFalse(clone.isLocked());
1130	+	}
1131	+
1132	+	/**
1133	+	* toString indicates current lock state
1134	+	*/
1135	+	public void testToString()      { testToString(false); }
1136	+	public void testToString_fair() { testToString(true); }
1137	+	public void testToString(boolean fair) {
1138	+	ReentrantLock lock = new ReentrantLock(fair);
1139	+	assertTrue(lock.toString().contains("Unlocked"));
1140	+	lock.lock();
1141	+	assertTrue(lock.toString().contains("Locked"));
1142	+	lock.unlock();
1143	+	assertTrue(lock.toString().contains("Unlocked"));
1144	+	}
1145		}

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