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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.5 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.57 by jsr166, Fri Feb 27 21:43:18 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.*;
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		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		}
27		public static Test suite() {
28	<	return new TestSuite(ReentrantLockTest.class);
28	>	return new TestSuite(ReentrantLockTest.class);
29		}
30
31	<	static int HOLD_COUNT_TEST_LIMIT = 20;
32	<
33	<	class InterruptibleLockRunnable implements Runnable {
31	>	/**
32	>	* A checked runnable calling lockInterruptibly
33	>	*/
34	>	class InterruptibleLockRunnable extends CheckedRunnable {
35		final ReentrantLock lock;
36	<	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
37	<	public void run(){
38	<	try{
29	<	lock.lockInterruptibly();
30	<	} catch(InterruptedException success){}
36	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
37	>	public void realRun() throws InterruptedException {
38	>	lock.lockInterruptibly();
39		}
40		}
41
42	<	// Same, except must interrupt
43	<	class InterruptedLockRunnable implements Runnable {
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 l) { lock = l; }
49	<	public void run(){
50	<	try{
40	<	lock.lockInterruptibly();
41	<	threadFail("should throw");
42	<	} catch(InterruptedException success){}
48	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
49	>	public void realRun() throws InterruptedException {
50	>	lock.lockInterruptibly();
51		}
52		}
53
54		/**
55	<	* To expose protected methods
55	>	* Subclass to expose protected methods
56		*/
57	<	static class MyReentrantLock extends ReentrantLock {
58	<	MyReentrantLock() { super(); }
59	<	public Collection<Thread> getQueuedThreads() {
60	<	return super.getQueuedThreads();
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	>	public Collection<Thread> getQueuedThreads() {
64	>	return super.getQueuedThreads();
65		}
66	<	public ConditionObject newCondition() {
67	<	return new MyCondition(this);
66	>	public Collection<Thread> getWaitingThreads(Condition c) {
67	>	return super.getWaitingThreads(c);
68		}
69	+	}
70
71	<	static class MyCondition extends ReentrantLock.ConditionObject {
72	<	MyCondition(MyReentrantLock l) { super(l); }
73	<	public Collection<Thread> getWaitingThreads() {
74	<	return super.getWaitingThreads();
75	<	}
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	+	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	<	* Unlocking an unlocked lock throws IllegalMonitorStateException
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	>	/**
175	>	* Constructor sets given fairness, and is in unlocked state
176		*/
177	<	public void testIllegalMonitorStateException(){
178	<	ReentrantLock rl = new ReentrantLock();
72	<	try{
73	<	rl.unlock();
74	<	fail("Should of thown Illegal Monitor State Exception");
177	>	public void testConstructor() {
178	>	PublicReentrantLock lock;
179
180	<	} catch(IllegalMonitorStateException success){}
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	<	* lockInterruptibly is interruptible.
193	>	/**
194	>	* locking an unlocked lock succeeds
195		*/
196	<	public void testInterruptedException(){
197	<	final ReentrantLock lock = new ReentrantLock();
198	<	lock.lock();
199	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
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 {
87	–	t.start();
88	–	t.interrupt();
213		lock.unlock();
214	<	t.join();
215	<	} catch(Exception e){
216	<	fail("unexpected exception");
93	<	}
94	<	}
214	>	shouldThrow();
215	>	} catch (IllegalMonitorStateException success) {}
216	>	}
217
218	<	/*
219	<	* getLockQueueLength reports number of waiting threads
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 testgetLockQueueLength(){
237	<	final ReentrantLock lock = new ReentrantLock();
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	<	try {
243	<	assertEquals(0, lock.getLockQueueLength());
244	<	lock.lock();
245	<	t1.start();
246	<	Thread.sleep(SHORT_DELAY_MS);
247	<	assertEquals(1, lock.getLockQueueLength());
248	<	t2.start();
249	<	Thread.sleep(SHORT_DELAY_MS);
250	<	assertEquals(2, lock.getLockQueueLength());
251	<	t1.interrupt();
252	<	Thread.sleep(SHORT_DELAY_MS);
253	<	assertEquals(1, lock.getLockQueueLength());
254	<	lock.unlock();
255	<	Thread.sleep(SHORT_DELAY_MS);
256	<	assertEquals(0, lock.getLockQueueLength());
257	<	t1.join();
119	<	t2.join();
120	<	} catch(Exception e){
121	<	fail("unexpected exception");
122	<	}
123	<	}
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	<	* getQueuedThreads includes waiting threads
259	>	/**
260	>	* getQueueLength reports number of waiting threads
261		*/
262	<	public void testGetQueuedThreads(){
263	<	final MyReentrantLock lock = new MyReentrantLock();
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	<	try {
269	<	assertTrue(lock.getQueuedThreads().isEmpty());
270	<	lock.lock();
271	<	assertTrue(lock.getQueuedThreads().isEmpty());
272	<	t1.start();
273	<	Thread.sleep(SHORT_DELAY_MS);
274	<	assertTrue(lock.getQueuedThreads().contains(t1));
275	<	t2.start();
276	<	Thread.sleep(SHORT_DELAY_MS);
277	<	assertTrue(lock.getQueuedThreads().contains(t1));
278	<	assertTrue(lock.getQueuedThreads().contains(t2));
279	<	t1.interrupt();
280	<	Thread.sleep(SHORT_DELAY_MS);
281	<	assertFalse(lock.getQueuedThreads().contains(t1));
282	<	assertTrue(lock.getQueuedThreads().contains(t2));
147	<	lock.unlock();
148	<	Thread.sleep(SHORT_DELAY_MS);
149	<	assertTrue(lock.getQueuedThreads().isEmpty());
150	<	t1.join();
151	<	t2.join();
152	<	} catch(Exception e){
153	<	fail("unexpected exception");
154	<	}
155	<	}
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	<	* timed trylock is interruptible.
297	>	/**
298	>	* hasQueuedThread reports whether a thread is queued
299		*/
300	<	public void testInterruptedException2(){
301	<	final ReentrantLock lock = new ReentrantLock();
302	<	lock.lock();
303	<	Thread t = new Thread(new Runnable() {
304	<	public void run(){
305	<	try{
306	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
307	<	threadFail("should throw");
308	<	} catch(InterruptedException success){}
309	<	}
310	<	});
311	<	try {
312	<	t.start();
313	<	t.interrupt();
314	<	} catch(Exception e){
315	<	fail("unexpected exception");
316	<	}
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	<	* Trylock on a locked lock fails
359	>	* timed tryLock is interruptible
360		*/
361	<	public void testTryLockWhenLocked() {
362	<	final ReentrantLock lock = new ReentrantLock();
363	<	lock.lock();
364	<	Thread t = new Thread(new Runnable() {
365	<	public void run(){
366	<	threadAssertFalse(lock.tryLock());
367	<	}
368	<	});
369	<	try {
370	<	t.start();
371	<	t.join();
372	<	lock.unlock();
373	<	} catch(Exception e){
374	<	fail("unexpected exception");
375	<	}
199	<	}
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	<	* Timed Trylock on a locked lock times out
378	>	* tryLock on a locked lock fails
379		*/
380	<	public void testTryLock_Timeout(){
381	<	final ReentrantLock lock = new ReentrantLock();
382	<	lock.lock();
383	<	Thread t = new Thread(new Runnable() {
384	<	public void run(){
385	<	try {
386	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
387	<	} catch (Exception ex) {
388	<	threadFail("unexpected exception");
389	<	}
390	<	}
391	<	});
392	<	try {
393	<	t.start();
394	<	t.join();
395	<	lock.unlock();
396	<	} catch(Exception e){
397	<	fail("unexpected exception");
398	<	}
399	<	}
400	<
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() {
418	<	ReentrantLock lock = new ReentrantLock();
419	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
420	<	lock.lock();
421	<	assertEquals(i,lock.getHoldCount());
422	<	}
423	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
424	<	lock.unlock();
425	<	assertEquals(i-1,lock.getHoldCount());
426	<	}
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	>	assertEquals(i, lock.getHoldCount());
424	>	}
425	>	for (int i = SIZE; i > 0; i--) {
426	>	lock.unlock();
427	>	assertEquals(i-1, lock.getHoldCount());
428	>	}
429		}
430	<
240	<
430	>
431		/**
432		* isLocked is true when locked and false when not
433		*/
434	<	public void testIsLocked() {
435	<	final ReentrantLock lock = new ReentrantLock();
436	<	lock.lock();
437	<	assertTrue(lock.isLocked());
438	<	lock.unlock();
439	<	assertFalse(lock.isLocked());
440	<	Thread t = new Thread(new Runnable() {
251	<	public void run() {
252	<	lock.lock();
253	<	try {
254	<	Thread.sleep(SMALL_DELAY_MS);
255	<	}
256	<	catch(Exception e) {
257	<	threadFail("unexpected exception");
258	<	}
259	<	lock.unlock();
260	<	}
261	<	});
262	<	try{
263	<	t.start();
264	<	Thread.sleep(SHORT_DELAY_MS);
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		assertTrue(lock.isLocked());
442	<	t.join();
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444	>	lock.unlock();
445	>	assertTrue(lock.isLocked());
446	>	lock.unlock();
447		assertFalse(lock.isLocked());
448	<	} catch(Exception e){
449	<	fail("unexpected exception");
450	<	}
451	<	}
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 fail) { threadUnexpectedException(fail); }
464	+	}
465
466		/**
467		* lockInterruptibly succeeds when unlocked, else is interruptible
468		*/
469	<	public void testLockInterruptibly() {
470	<	final ReentrantLock lock = new ReentrantLock();
471	<	try {
472	<	lock.lockInterruptibly();
281	<	} catch(Exception e) {
282	<	fail("unexpected exception");
283	<	}
284	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
469	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
470	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
471	>	public void testLockInterruptibly(boolean fair) {
472	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
473		try {
474	<	t.start();
475	<	t.interrupt();
476	<	assertTrue(lock.isLocked());
477	<	assertTrue(lock.isHeldByCurrentThread());
478	<	t.join();
479	<	} catch(Exception e){
480	<	fail("unexpected exception");
481	<	}
474	>	lock.lockInterruptibly();
475	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
476	>	assertLockedByMoi(lock);
477	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
478	>	waitForQueuedThread(lock, t);
479	>	t.interrupt();
480	>	assertTrue(lock.isLocked());
481	>	assertTrue(lock.isHeldByCurrentThread());
482	>	awaitTermination(t);
483	>	releaseLock(lock);
484		}
485
486	<	public void testAwait_IllegalMonitor() {
487	<	final ReentrantLock lock = new ReentrantLock();
486	>	/**
487	>	* Calling await without holding lock throws IllegalMonitorStateException
488	>	*/
489	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
490	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
491	>	public void testAwait_IMSE(boolean fair) {
492	>	final ReentrantLock lock = new ReentrantLock(fair);
493		final Condition c = lock.newCondition();
494	<	try {
495	<	c.await();
496	<	fail("should throw");
497	<	}
498	<	catch (IllegalMonitorStateException success) {
499	<	}
500	<	catch (Exception ex) {
501	<	fail("should throw IMSE");
494	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
495	>	long startTime = System.nanoTime();
496	>	try {
497	>	await(c, awaitMethod);
498	>	shouldThrow();
499	>	} catch (IllegalMonitorStateException success) {
500	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
501	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
502		}
503		}
504
505	<	public void testSignal_IllegalMonitor() {
506	<	final ReentrantLock lock = new ReentrantLock();
505	>	/**
506	>	* Calling signal without holding lock throws IllegalMonitorStateException
507	>	*/
508	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
509	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
510	>	public void testSignal_IMSE(boolean fair) {
511	>	final ReentrantLock lock = new ReentrantLock(fair);
512		final Condition c = lock.newCondition();
513		try {
514		c.signal();
515	<	fail("should throw");
516	<	}
317	<	catch (IllegalMonitorStateException success) {
318	<	}
319	<	catch (Exception ex) {
320	<	fail("should throw IMSE");
321	<	}
515	>	shouldThrow();
516	>	} catch (IllegalMonitorStateException success) {}
517		}
518
519	<	public void testAwaitNanos_Timeout() {
520	<	final ReentrantLock lock = new ReentrantLock();
521	<	final Condition c = lock.newCondition();
519	>	/**
520	>	* awaitNanos without a signal times out
521	>	*/
522	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
523	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
524	>	public void testAwaitNanos_Timeout(boolean fair) {
525		try {
526	+	final ReentrantLock lock = new ReentrantLock(fair);
527	+	final Condition c = lock.newCondition();
528		lock.lock();
529	<	long t = c.awaitNanos(100);
530	<	assertTrue(t <= 0);
529	>	long startTime = System.nanoTime();
530	>	long timeoutMillis = 10;
531	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
532	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
533	>	assertTrue(nanosRemaining <= 0);
534	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
535		lock.unlock();
536	<	}
333	<	catch (Exception ex) {
334	<	fail("unexpected exception");
335	<	}
536	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
537		}
538
539	<	public void testAwait_Timeout() {
540	<	final ReentrantLock lock = new ReentrantLock();
541	<	final Condition c = lock.newCondition();
539	>	/**
540	>	* timed await without a signal times out
541	>	*/
542	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
543	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
544	>	public void testAwait_Timeout(boolean fair) {
545		try {
546	+	final ReentrantLock lock = new ReentrantLock(fair);
547	+	final Condition c = lock.newCondition();
548		lock.lock();
549	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
549	>	long startTime = System.nanoTime();
550	>	long timeoutMillis = 10;
551	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
552	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
553		lock.unlock();
554	<	}
346	<	catch (Exception ex) {
347	<	fail("unexpected exception");
348	<	}
554	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
555		}
556
557	<	public void testAwaitUntil_Timeout() {
558	<	final ReentrantLock lock = new ReentrantLock();
559	<	final Condition c = lock.newCondition();
557	>	/**
558	>	* awaitUntil without a signal times out
559	>	*/
560	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
561	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
562	>	public void testAwaitUntil_Timeout(boolean fair) {
563		try {
564	+	final ReentrantLock lock = new ReentrantLock(fair);
565	+	final Condition c = lock.newCondition();
566		lock.lock();
567	+	long startTime = System.nanoTime();
568	+	long timeoutMillis = 10;
569		java.util.Date d = new java.util.Date();
570	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
570	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
571	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
572		lock.unlock();
573	<	}
360	<	catch (Exception ex) {
361	<	fail("unexpected exception");
362	<	}
573	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
574		}
575
576	<	public void testAwait() {
577	<	final ReentrantLock lock = new ReentrantLock();
578	<	final ReentrantLock.ConditionObject c = lock.newCondition();
579	<	Thread t = new Thread(new Runnable() {
580	<	public void run() {
581	<	try {
582	<	lock.lock();
583	<	c.await();
584	<	lock.unlock();
585	<	}
586	<	catch(InterruptedException e) {
587	<	threadFail("unexpected exception");
588	<	}
589	<	}
590	<	});
576	>	/**
577	>	* await returns when signalled
578	>	*/
579	>	public void testAwait()      { testAwait(false); }
580	>	public void testAwait_fair() { testAwait(true); }
581	>	public void testAwait(boolean fair) {
582	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
583	>	final Condition c = lock.newCondition();
584	>	final CountDownLatch locked = new CountDownLatch(1);
585	>	Thread t = newStartedThread(new CheckedRunnable() {
586	>	public void realRun() throws InterruptedException {
587	>	lock.lock();
588	>	locked.countDown();
589	>	c.await();
590	>	lock.unlock();
591	>	}});
592	>
593	>	await(locked);
594	>	lock.lock();
595	>	assertHasWaiters(lock, c, t);
596	>	c.signal();
597	>	assertHasNoWaiters(lock, c);
598	>	assertTrue(t.isAlive());
599	>	lock.unlock();
600	>	awaitTermination(t);
601	>	}
602
603	<	try {
604	<	t.start();
605	<	Thread.sleep(SHORT_DELAY_MS);
606	<	lock.lock();
607	<	c.signal();
608	<	lock.unlock();
609	<	t.join(SHORT_DELAY_MS);
610	<	assertFalse(t.isAlive());
611	<	}
612	<	catch (Exception ex) {
613	<	fail("unexpected exception");
392	<	}
603	>	/**
604	>	* hasWaiters throws NPE if null
605	>	*/
606	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
607	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
608	>	public void testHasWaitersNPE(boolean fair) {
609	>	final ReentrantLock lock = new ReentrantLock(fair);
610	>	try {
611	>	lock.hasWaiters(null);
612	>	shouldThrow();
613	>	} catch (NullPointerException success) {}
614		}
615
616	<	public void testHasWaiters() {
617	<	final ReentrantLock lock = new ReentrantLock();
618	<	final ReentrantLock.ConditionObject c = lock.newCondition();
619	<	Thread t = new Thread(new Runnable() {
620	<	public void run() {
621	<	try {
622	<	lock.lock();
623	<	threadAssertFalse(c.hasWaiters());
624	<	threadAssertEquals(0, c.getWaitQueueLength());
625	<	c.await();
626	<	lock.unlock();
627	<	}
407	<	catch(InterruptedException e) {
408	<	threadFail("unexpected exception");
409	<	}
410	<	}
411	<	});
616	>	/**
617	>	* getWaitQueueLength throws NPE if null
618	>	*/
619	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
620	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
621	>	public void testGetWaitQueueLengthNPE(boolean fair) {
622	>	final ReentrantLock lock = new ReentrantLock(fair);
623	>	try {
624	>	lock.getWaitQueueLength(null);
625	>	shouldThrow();
626	>	} catch (NullPointerException success) {}
627	>	}
628
629	<	try {
630	<	t.start();
631	<	Thread.sleep(SHORT_DELAY_MS);
632	<	lock.lock();
633	<	assertTrue(c.hasWaiters());
634	<	assertEquals(1, c.getWaitQueueLength());
635	<	c.signal();
636	<	lock.unlock();
637	<	Thread.sleep(SHORT_DELAY_MS);
638	<	lock.lock();
639	<	assertFalse(c.hasWaiters());
424	<	assertEquals(0, c.getWaitQueueLength());
425	<	lock.unlock();
426	<	t.join(SHORT_DELAY_MS);
427	<	assertFalse(t.isAlive());
428	<	}
429	<	catch (Exception ex) {
430	<	fail("unexpected exception");
431	<	}
629	>	/**
630	>	* getWaitingThreads throws NPE if null
631	>	*/
632	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
633	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
634	>	public void testGetWaitingThreadsNPE(boolean fair) {
635	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
636	>	try {
637	>	lock.getWaitingThreads(null);
638	>	shouldThrow();
639	>	} catch (NullPointerException success) {}
640		}
641
642	<	public void testGetWaitQueueLength() {
643	<	final ReentrantLock lock = new ReentrantLock();
644	<	final ReentrantLock.ConditionObject c = lock.newCondition();
645	<	Thread t1 = new Thread(new Runnable() {
646	<	public void run() {
647	<	try {
648	<	lock.lock();
649	<	threadAssertFalse(c.hasWaiters());
650	<	threadAssertEquals(0, c.getWaitQueueLength());
651	<	c.await();
652	<	lock.unlock();
653	<	}
654	<	catch(InterruptedException e) {
655	<	threadFail("unexpected exception");
448	<	}
449	<	}
450	<	});
451	<
452	<	Thread t2 = new Thread(new Runnable() {
453	<	public void run() {
454	<	try {
455	<	lock.lock();
456	<	threadAssertTrue(c.hasWaiters());
457	<	threadAssertEquals(1, c.getWaitQueueLength());
458	<	c.await();
459	<	lock.unlock();
460	<	}
461	<	catch(InterruptedException e) {
462	<	threadFail("unexpected exception");
463	<	}
464	<	}
465	<	});
642	>	/**
643	>	* hasWaiters throws IllegalArgumentException if not owned
644	>	*/
645	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
646	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
647	>	public void testHasWaitersIAE(boolean fair) {
648	>	final ReentrantLock lock = new ReentrantLock(fair);
649	>	final Condition c = lock.newCondition();
650	>	final ReentrantLock lock2 = new ReentrantLock(fair);
651	>	try {
652	>	lock2.hasWaiters(c);
653	>	shouldThrow();
654	>	} catch (IllegalArgumentException success) {}
655	>	}
656
657	+	/**
658	+	* hasWaiters throws IllegalMonitorStateException if not locked
659	+	*/
660	+	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
661	+	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
662	+	public void testHasWaitersIMSE(boolean fair) {
663	+	final ReentrantLock lock = new ReentrantLock(fair);
664	+	final Condition c = lock.newCondition();
665		try {
666	<	t1.start();
667	<	Thread.sleep(SHORT_DELAY_MS);
668	<	t2.start();
471	<	Thread.sleep(SHORT_DELAY_MS);
472	<	lock.lock();
473	<	assertTrue(c.hasWaiters());
474	<	assertEquals(2, c.getWaitQueueLength());
475	<	c.signalAll();
476	<	lock.unlock();
477	<	Thread.sleep(SHORT_DELAY_MS);
478	<	lock.lock();
479	<	assertFalse(c.hasWaiters());
480	<	assertEquals(0, c.getWaitQueueLength());
481	<	lock.unlock();
482	<	t1.join(SHORT_DELAY_MS);
483	<	t2.join(SHORT_DELAY_MS);
484	<	assertFalse(t1.isAlive());
485	<	assertFalse(t2.isAlive());
486	<	}
487	<	catch (Exception ex) {
488	<	fail("unexpected exception");
489	<	}
666	>	lock.hasWaiters(c);
667	>	shouldThrow();
668	>	} catch (IllegalMonitorStateException success) {}
669		}
670
671	<	public void testGetWaitingThreads() {
672	<	final MyReentrantLock lock = new MyReentrantLock();
673	<	final MyReentrantLock.MyCondition c = (MyReentrantLock.MyCondition)lock.newCondition();
674	<	Thread t1 = new Thread(new Runnable() {
675	<	public void run() {
676	<	try {
677	<	lock.lock();
678	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
679	<	c.await();
680	<	lock.unlock();
681	<	}
682	<	catch(InterruptedException e) {
683	<	threadFail("unexpected exception");
684	<	}
506	<	}
507	<	});
508	<
509	<	Thread t2 = new Thread(new Runnable() {
510	<	public void run() {
511	<	try {
512	<	lock.lock();
513	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
514	<	c.await();
515	<	lock.unlock();
516	<	}
517	<	catch(InterruptedException e) {
518	<	threadFail("unexpected exception");
519	<	}
520	<	}
521	<	});
671	>	/**
672	>	* getWaitQueueLength throws IllegalArgumentException if not owned
673	>	*/
674	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
675	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
676	>	public void testGetWaitQueueLengthIAE(boolean fair) {
677	>	final ReentrantLock lock = new ReentrantLock(fair);
678	>	final Condition c = lock.newCondition();
679	>	final ReentrantLock lock2 = new ReentrantLock(fair);
680	>	try {
681	>	lock2.getWaitQueueLength(c);
682	>	shouldThrow();
683	>	} catch (IllegalArgumentException success) {}
684	>	}
685
686	+	/**
687	+	* getWaitQueueLength throws IllegalMonitorStateException if not locked
688	+	*/
689	+	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
690	+	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
691	+	public void testGetWaitQueueLengthIMSE(boolean fair) {
692	+	final ReentrantLock lock = new ReentrantLock(fair);
693	+	final Condition c = lock.newCondition();
694		try {
695	<	lock.lock();
696	<	assertTrue(c.getWaitingThreads().isEmpty());
697	<	lock.unlock();
527	<	t1.start();
528	<	Thread.sleep(SHORT_DELAY_MS);
529	<	t2.start();
530	<	Thread.sleep(SHORT_DELAY_MS);
531	<	lock.lock();
532	<	assertTrue(c.hasWaiters());
533	<	assertTrue(c.getWaitingThreads().contains(t1));
534	<	assertTrue(c.getWaitingThreads().contains(t2));
535	<	c.signalAll();
536	<	lock.unlock();
537	<	Thread.sleep(SHORT_DELAY_MS);
538	<	lock.lock();
539	<	assertFalse(c.hasWaiters());
540	<	assertTrue(c.getWaitingThreads().isEmpty());
541	<	lock.unlock();
542	<	t1.join(SHORT_DELAY_MS);
543	<	t2.join(SHORT_DELAY_MS);
544	<	assertFalse(t1.isAlive());
545	<	assertFalse(t2.isAlive());
546	<	}
547	<	catch (Exception ex) {
548	<	fail("unexpected exception");
549	<	}
695	>	lock.getWaitQueueLength(c);
696	>	shouldThrow();
697	>	} catch (IllegalMonitorStateException success) {}
698		}
699
700	<	public void testAwaitUninterruptibly() {
701	<	final ReentrantLock lock = new ReentrantLock();
700	>	/**
701	>	* getWaitingThreads throws IllegalArgumentException if not owned
702	>	*/
703	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
704	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
705	>	public void testGetWaitingThreadsIAE(boolean fair) {
706	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
707		final Condition c = lock.newCondition();
708	<	Thread t = new Thread(new Runnable() {
709	<	public void run() {
710	<	lock.lock();
711	<	c.awaitUninterruptibly();
712	<	lock.unlock();
713	<	}
561	<	});
708	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
709	>	try {
710	>	lock2.getWaitingThreads(c);
711	>	shouldThrow();
712	>	} catch (IllegalArgumentException success) {}
713	>	}
714
715	+	/**
716	+	* getWaitingThreads throws IllegalMonitorStateException if not locked
717	+	*/
718	+	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
719	+	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
720	+	public void testGetWaitingThreadsIMSE(boolean fair) {
721	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
722	+	final Condition c = lock.newCondition();
723		try {
724	<	t.start();
725	<	Thread.sleep(SHORT_DELAY_MS);
726	<	t.interrupt();
567	<	lock.lock();
568	<	c.signal();
569	<	lock.unlock();
570	<	t.join(SHORT_DELAY_MS);
571	<	assertFalse(t.isAlive());
572	<	}
573	<	catch (Exception ex) {
574	<	fail("unexpected exception");
575	<	}
724	>	lock.getWaitingThreads(c);
725	>	shouldThrow();
726	>	} catch (IllegalMonitorStateException success) {}
727		}
728
729	<	public void testAwait_Interrupt() {
730	<	final ReentrantLock lock = new ReentrantLock();
729	>	/**
730	>	* hasWaiters returns true when a thread is waiting, else false
731	>	*/
732	>	public void testHasWaiters()      { testHasWaiters(false); }
733	>	public void testHasWaiters_fair() { testHasWaiters(true); }
734	>	public void testHasWaiters(boolean fair) {
735	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
736		final Condition c = lock.newCondition();
737	<	Thread t = new Thread(new Runnable() {
738	<	public void run() {
739	<	try {
740	<	lock.lock();
741	<	c.await();
742	<	lock.unlock();
743	<	threadFail("should throw");
744	<	}
745	<	catch(InterruptedException success) {
746	<	}
747	<	}
748	<	});
737	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
738	>	Thread t = newStartedThread(new CheckedRunnable() {
739	>	public void realRun() throws InterruptedException {
740	>	lock.lock();
741	>	assertHasNoWaiters(lock, c);
742	>	assertFalse(lock.hasWaiters(c));
743	>	pleaseSignal.countDown();
744	>	c.await();
745	>	assertHasNoWaiters(lock, c);
746	>	assertFalse(lock.hasWaiters(c));
747	>	lock.unlock();
748	>	}});
749	>
750	>	await(pleaseSignal);
751	>	lock.lock();
752	>	assertHasWaiters(lock, c, t);
753	>	assertTrue(lock.hasWaiters(c));
754	>	c.signal();
755	>	assertHasNoWaiters(lock, c);
756	>	assertFalse(lock.hasWaiters(c));
757	>	lock.unlock();
758	>	awaitTermination(t);
759	>	assertHasNoWaiters(lock, c);
760	>	}
761
762	<	try {
763	<	t.start();
764	<	Thread.sleep(SHORT_DELAY_MS);
765	<	t.interrupt();
766	<	t.join(SHORT_DELAY_MS);
767	<	assertFalse(t.isAlive());
768	<	}
769	<	catch (Exception ex) {
770	<	fail("unexpected exception");
771	<	}
762	>	/**
763	>	* getWaitQueueLength returns number of waiting threads
764	>	*/
765	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
766	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
767	>	public void testGetWaitQueueLength(boolean fair) {
768	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
769	>	final Condition c = lock.newCondition();
770	>	final CountDownLatch locked1 = new CountDownLatch(1);
771	>	final CountDownLatch locked2 = new CountDownLatch(1);
772	>	Thread t1 = new Thread(new CheckedRunnable() {
773	>	public void realRun() throws InterruptedException {
774	>	lock.lock();
775	>	assertFalse(lock.hasWaiters(c));
776	>	assertEquals(0, lock.getWaitQueueLength(c));
777	>	locked1.countDown();
778	>	c.await();
779	>	lock.unlock();
780	>	}});
781	>
782	>	Thread t2 = new Thread(new CheckedRunnable() {
783	>	public void realRun() throws InterruptedException {
784	>	lock.lock();
785	>	assertTrue(lock.hasWaiters(c));
786	>	assertEquals(1, lock.getWaitQueueLength(c));
787	>	locked2.countDown();
788	>	c.await();
789	>	lock.unlock();
790	>	}});
791	>
792	>	lock.lock();
793	>	assertEquals(0, lock.getWaitQueueLength(c));
794	>	lock.unlock();
795	>
796	>	t1.start();
797	>	await(locked1);
798	>
799	>	lock.lock();
800	>	assertHasWaiters(lock, c, t1);
801	>	assertEquals(1, lock.getWaitQueueLength(c));
802	>	lock.unlock();
803	>
804	>	t2.start();
805	>	await(locked2);
806	>
807	>	lock.lock();
808	>	assertHasWaiters(lock, c, t1, t2);
809	>	assertEquals(2, lock.getWaitQueueLength(c));
810	>	c.signalAll();
811	>	assertHasNoWaiters(lock, c);
812	>	lock.unlock();
813	>
814	>	awaitTermination(t1);
815	>	awaitTermination(t2);
816	>
817	>	assertHasNoWaiters(lock, c);
818		}
819
820	<	public void testAwaitNanos_Interrupt() {
821	<	final ReentrantLock lock = new ReentrantLock();
820	>	/**
821	>	* getWaitingThreads returns only and all waiting threads
822	>	*/
823	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
824	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
825	>	public void testGetWaitingThreads(boolean fair) {
826	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
827		final Condition c = lock.newCondition();
828	<	Thread t = new Thread(new Runnable() {
829	<	public void run() {
830	<	try {
831	<	lock.lock();
832	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
833	<	lock.unlock();
834	<	threadFail("should throw");
835	<	}
836	<	catch(InterruptedException success) {
837	<	}
838	<	}
839	<	});
840	<
841	<	try {
842	<	t.start();
843	<	Thread.sleep(SHORT_DELAY_MS);
844	<	t.interrupt();
845	<	t.join(SHORT_DELAY_MS);
846	<	assertFalse(t.isAlive());
847	<	}
848	<	catch (Exception ex) {
849	<	fail("unexpected exception");
850	<	}
828	>	final CountDownLatch locked1 = new CountDownLatch(1);
829	>	final CountDownLatch locked2 = new CountDownLatch(1);
830	>	Thread t1 = new Thread(new CheckedRunnable() {
831	>	public void realRun() throws InterruptedException {
832	>	lock.lock();
833	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
834	>	locked1.countDown();
835	>	c.await();
836	>	lock.unlock();
837	>	}});
838	>
839	>	Thread t2 = new Thread(new CheckedRunnable() {
840	>	public void realRun() throws InterruptedException {
841	>	lock.lock();
842	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
843	>	locked2.countDown();
844	>	c.await();
845	>	lock.unlock();
846	>	}});
847	>
848	>	lock.lock();
849	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
850	>	lock.unlock();
851	>
852	>	t1.start();
853	>	await(locked1);
854	>
855	>	lock.lock();
856	>	assertHasWaiters(lock, c, t1);
857	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
858	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
859	>	assertEquals(1, lock.getWaitingThreads(c).size());
860	>	lock.unlock();
861	>
862	>	t2.start();
863	>	await(locked2);
864	>
865	>	lock.lock();
866	>	assertHasWaiters(lock, c, t1, t2);
867	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
868	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
869	>	assertEquals(2, lock.getWaitingThreads(c).size());
870	>	c.signalAll();
871	>	assertHasNoWaiters(lock, c);
872	>	lock.unlock();
873	>
874	>	awaitTermination(t1);
875	>	awaitTermination(t2);
876	>
877	>	assertHasNoWaiters(lock, c);
878		}
879
880	<	public void testAwaitUntil_Interrupt() {
881	<	final ReentrantLock lock = new ReentrantLock();
882	<	final Condition c = lock.newCondition();
883	<	Thread t = new Thread(new Runnable() {
884	<	public void run() {
885	<	try {
886	<	lock.lock();
887	<	java.util.Date d = new java.util.Date();
888	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
643	<	lock.unlock();
644	<	threadFail("should throw");
645	<	}
646	<	catch(InterruptedException success) {
647	<	}
648	<	}
649	<	});
880	>	/**
881	>	* awaitUninterruptibly is uninterruptible
882	>	*/
883	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
884	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
885	>	public void testAwaitUninterruptibly(boolean fair) {
886	>	final ReentrantLock lock = new ReentrantLock(fair);
887	>	final Condition c = lock.newCondition();
888	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
889
890	<	try {
891	<	t.start();
892	<	Thread.sleep(SHORT_DELAY_MS);
893	<	t.interrupt();
894	<	t.join(SHORT_DELAY_MS);
895	<	assertFalse(t.isAlive());
896	<	}
897	<	catch (Exception ex) {
898	<	fail("unexpected exception");
899	<	}
890	>	Thread t1 = newStartedThread(new CheckedRunnable() {
891	>	public void realRun() {
892	>	// Interrupt before awaitUninterruptibly
893	>	lock.lock();
894	>	pleaseInterrupt.countDown();
895	>	Thread.currentThread().interrupt();
896	>	c.awaitUninterruptibly();
897	>	assertTrue(Thread.interrupted());
898	>	lock.unlock();
899	>	}});
900	>
901	>	Thread t2 = newStartedThread(new CheckedRunnable() {
902	>	public void realRun() {
903	>	// Interrupt during awaitUninterruptibly
904	>	lock.lock();
905	>	pleaseInterrupt.countDown();
906	>	c.awaitUninterruptibly();
907	>	assertTrue(Thread.interrupted());
908	>	lock.unlock();
909	>	}});
910	>
911	>	await(pleaseInterrupt);
912	>	lock.lock();
913	>	lock.unlock();
914	>	t2.interrupt();
915	>
916	>	assertThreadStaysAlive(t1);
917	>	assertTrue(t2.isAlive());
918	>
919	>	lock.lock();
920	>	c.signalAll();
921	>	lock.unlock();
922	>
923	>	awaitTermination(t1);
924	>	awaitTermination(t2);
925		}
926
927	<	public void testSignalAll() {
928	<	final ReentrantLock lock = new ReentrantLock();
927	>	/**
928	>	* await/awaitNanos/awaitUntil is interruptible
929	>	*/
930	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
931	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
932	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
933	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
934	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
935	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
936	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
937	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
938	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
939	>	final PublicReentrantLock lock =
940	>	new PublicReentrantLock(fair);
941		final Condition c = lock.newCondition();
942	<	Thread t1 = new Thread(new Runnable() {
943	<	public void run() {
944	<	try {
945	<	lock.lock();
946	<	c.await();
947	<	lock.unlock();
948	<	}
949	<	catch(InterruptedException e) {
950	<	threadFail("unexpected exception");
951	<	}
952	<	}
953	<	});
954	<
955	<	Thread t2 = new Thread(new Runnable() {
956	<	public void run() {
957	<	try {
958	<	lock.lock();
959	<	c.await();
960	<	lock.unlock();
961	<	}
962	<	catch(InterruptedException e) {
963	<	threadFail("unexpected exception");
964	<	}
689	<	}
690	<	});
942	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
943	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
944	>	public void realRun() throws InterruptedException {
945	>	lock.lock();
946	>	assertLockedByMoi(lock);
947	>	assertHasNoWaiters(lock, c);
948	>	pleaseInterrupt.countDown();
949	>	try {
950	>	await(c, awaitMethod);
951	>	} finally {
952	>	assertLockedByMoi(lock);
953	>	assertHasNoWaiters(lock, c);
954	>	lock.unlock();
955	>	assertFalse(Thread.interrupted());
956	>	}
957	>	}});
958	>
959	>	await(pleaseInterrupt);
960	>	assertHasWaiters(lock, c, t);
961	>	t.interrupt();
962	>	awaitTermination(t);
963	>	assertNotLocked(lock);
964	>	}
965
966	<	try {
967	<	t1.start();
968	<	t2.start();
969	<	Thread.sleep(SHORT_DELAY_MS);
970	<	lock.lock();
971	<	c.signalAll();
972	<	lock.unlock();
973	<	t1.join(SHORT_DELAY_MS);
974	<	t2.join(SHORT_DELAY_MS);
975	<	assertFalse(t1.isAlive());
976	<	assertFalse(t2.isAlive());
977	<	}
978	<	catch (Exception ex) {
979	<	fail("unexpected exception");
966	>	/**
967	>	* signalAll wakes up all threads
968	>	*/
969	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
970	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
971	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
972	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
973	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
974	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
975	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
976	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
977	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
978	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
979	>	final Condition c = lock.newCondition();
980	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
981	>	class Awaiter extends CheckedRunnable {
982	>	public void realRun() throws InterruptedException {
983	>	lock.lock();
984	>	pleaseSignal.countDown();
985	>	await(c, awaitMethod);
986	>	lock.unlock();
987	>	}
988		}
989	+
990	+	Thread t1 = newStartedThread(new Awaiter());
991	+	Thread t2 = newStartedThread(new Awaiter());
992	+
993	+	await(pleaseSignal);
994	+	lock.lock();
995	+	assertHasWaiters(lock, c, t1, t2);
996	+	c.signalAll();
997	+	assertHasNoWaiters(lock, c);
998	+	lock.unlock();
999	+	awaitTermination(t1);
1000	+	awaitTermination(t2);
1001		}
1002
1003	<	public void testSerialization() {
1004	<	ReentrantLock l = new ReentrantLock();
1005	<	l.lock();
1006	<	l.unlock();
1007	<
1008	<	try {
1009	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1010	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1011	<	out.writeObject(l);
1012	<	out.close();
1013	<
1014	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1015	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1016	<	ReentrantLock r = (ReentrantLock) in.readObject();
1017	<	r.lock();
1018	<	r.unlock();
1019	<	} catch(Exception e){
1020	<	e.printStackTrace();
1021	<	fail("unexpected exception");
1022	<	}
1003	>	/**
1004	>	* signal wakes up waiting threads in FIFO order
1005	>	*/
1006	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1007	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1008	>	public void testSignalWakesFifo(boolean fair) {
1009	>	final PublicReentrantLock lock =
1010	>	new PublicReentrantLock(fair);
1011	>	final Condition c = lock.newCondition();
1012	>	final CountDownLatch locked1 = new CountDownLatch(1);
1013	>	final CountDownLatch locked2 = new CountDownLatch(1);
1014	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1015	>	public void realRun() throws InterruptedException {
1016	>	lock.lock();
1017	>	locked1.countDown();
1018	>	c.await();
1019	>	lock.unlock();
1020	>	}});
1021	>
1022	>	await(locked1);
1023	>
1024	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1025	>	public void realRun() throws InterruptedException {
1026	>	lock.lock();
1027	>	locked2.countDown();
1028	>	c.await();
1029	>	lock.unlock();
1030	>	}});
1031	>
1032	>	await(locked2);
1033	>
1034	>	lock.lock();
1035	>	assertHasWaiters(lock, c, t1, t2);
1036	>	assertFalse(lock.hasQueuedThreads());
1037	>	c.signal();
1038	>	assertHasWaiters(lock, c, t2);
1039	>	assertTrue(lock.hasQueuedThread(t1));
1040	>	assertFalse(lock.hasQueuedThread(t2));
1041	>	c.signal();
1042	>	assertHasNoWaiters(lock, c);
1043	>	assertTrue(lock.hasQueuedThread(t1));
1044	>	assertTrue(lock.hasQueuedThread(t2));
1045	>	lock.unlock();
1046	>	awaitTermination(t1);
1047	>	awaitTermination(t2);
1048		}
1049
1050	+	/**
1051	+	* await after multiple reentrant locking preserves lock count
1052	+	*/
1053	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1054	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1055	+	public void testAwaitLockCount(boolean fair) {
1056	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1057	+	final Condition c = lock.newCondition();
1058	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1059	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1060	+	public void realRun() throws InterruptedException {
1061	+	lock.lock();
1062	+	assertLockedByMoi(lock);
1063	+	assertEquals(1, lock.getHoldCount());
1064	+	pleaseSignal.countDown();
1065	+	c.await();
1066	+	assertLockedByMoi(lock);
1067	+	assertEquals(1, lock.getHoldCount());
1068	+	lock.unlock();
1069	+	}});
1070	+
1071	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1072	+	public void realRun() throws InterruptedException {
1073	+	lock.lock();
1074	+	lock.lock();
1075	+	assertLockedByMoi(lock);
1076	+	assertEquals(2, lock.getHoldCount());
1077	+	pleaseSignal.countDown();
1078	+	c.await();
1079	+	assertLockedByMoi(lock);
1080	+	assertEquals(2, lock.getHoldCount());
1081	+	lock.unlock();
1082	+	lock.unlock();
1083	+	}});
1084	+
1085	+	await(pleaseSignal);
1086	+	lock.lock();
1087	+	assertHasWaiters(lock, c, t1, t2);
1088	+	assertEquals(1, lock.getHoldCount());
1089	+	c.signalAll();
1090	+	assertHasNoWaiters(lock, c);
1091	+	lock.unlock();
1092	+	awaitTermination(t1);
1093	+	awaitTermination(t2);
1094	+	}
1095	+
1096	+	/**
1097	+	* A serialized lock deserializes as unlocked
1098	+	*/
1099	+	public void testSerialization()      { testSerialization(false); }
1100	+	public void testSerialization_fair() { testSerialization(true); }
1101	+	public void testSerialization(boolean fair) {
1102	+	ReentrantLock lock = new ReentrantLock(fair);
1103	+	lock.lock();
1104	+
1105	+	ReentrantLock clone = serialClone(lock);
1106	+	assertEquals(lock.isFair(), clone.isFair());
1107	+	assertTrue(lock.isLocked());
1108	+	assertFalse(clone.isLocked());
1109	+	assertEquals(1, lock.getHoldCount());
1110	+	assertEquals(0, clone.getHoldCount());
1111	+	clone.lock();
1112	+	clone.lock();
1113	+	assertTrue(clone.isLocked());
1114	+	assertEquals(2, clone.getHoldCount());
1115	+	assertEquals(1, lock.getHoldCount());
1116	+	clone.unlock();
1117	+	clone.unlock();
1118	+	assertTrue(lock.isLocked());
1119	+	assertFalse(clone.isLocked());
1120	+	}
1121	+
1122	+	/**
1123	+	* toString indicates current lock state
1124	+	*/
1125	+	public void testToString()      { testToString(false); }
1126	+	public void testToString_fair() { testToString(true); }
1127	+	public void testToString(boolean fair) {
1128	+	ReentrantLock lock = new ReentrantLock(fair);
1129	+	assertTrue(lock.toString().contains("Unlocked"));
1130	+	lock.lock();
1131	+	assertTrue(lock.toString().contains("Locked"));
1132	+	lock.unlock();
1133	+	assertTrue(lock.toString().contains("Unlocked"));
1134	+	}
1135		}

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