ViewVC Help

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

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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.2 by dl, Sat Sep 6 19:36:05 2003 UTC vs.
Revision 1.66 by jsr166, Mon Jul 17 21:01:30 2017 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	+	@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom
24	+	public class ReentrantLockTest extends JSR166TestCase {
25		public static void main(String[] args) {
26	<	junit.textui.TestRunner.run (suite());
26	>	main(suite(), args);
27		}
18	–
28		public static Test suite() {
29	<	return new TestSuite(ReentrantLockTest.class);
29	>	return new TestSuite(ReentrantLockTest.class);
30		}
31
32	<	private static long SHORT_DELAY_MS = 100;
33	<	private static long MEDIUM_DELAY_MS = 1000;
34	<	private static long LONG_DELAY_MS = 10000;
35	<
36	<	/*
37	<	* Unlocks an unlocked lock, throws Illegal Monitor State
38	<	*
39	<	*/
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");
32	>	/**
33	>	* A checked runnable calling lockInterruptibly
34	>	*/
35	>	class InterruptibleLockRunnable extends CheckedRunnable {
36	>	final ReentrantLock lock;
37	>	InterruptibleLockRunnable(ReentrantLock lock) { this.lock = lock; }
38	>	public void realRun() throws InterruptedException {
39	>	lock.lockInterruptibly();
40		}
127	–
41		}
42
43	<	/*
44	<	* current thread locks interruptibly the thread
45	<	* another thread tries to aquire the lock and blocks
46	<	* on the call. interrupt the attempted aquireLock
47	<	* assert that the first lock() call actually locked the lock
48	<	* assert that the current thread is the one holding the lock
49	<	*/
50	<
51	<	public void testLockedInterruptibly() {
52	<	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());
43	>	/**
44	>	* A checked runnable calling lockInterruptibly that expects to be
45	>	* interrupted
46	>	*/
47	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
48	>	final ReentrantLock lock;
49	>	InterruptedLockRunnable(ReentrantLock lock) { this.lock = lock; }
50	>	public void realRun() throws InterruptedException {
51	>	lock.lockInterruptibly();
52	>	}
53		}
54
55	<	public void testAwait_IllegalMonitor() {
56	<	final ReentrantLock lock = new ReentrantLock();
57	<	final Condition c = lock.newCondition();
58	<	try {
59	<	c.await();
60	<	fail("should throw");
55	>	/**
56	>	* Subclass to expose protected methods
57	>	*/
58	>	static class PublicReentrantLock extends ReentrantLock {
59	>	PublicReentrantLock() { super(); }
60	>	PublicReentrantLock(boolean fair) { super(fair); }
61	>	public Thread getOwner() {
62	>	return super.getOwner();
63		}
64	<	catch (IllegalMonitorStateException success) {
64	>	public Collection<Thread> getQueuedThreads() {
65	>	return super.getQueuedThreads();
66		}
67	<	catch (Exception ex) {
68	<	fail("should throw IMSE");
67	>	public Collection<Thread> getWaitingThreads(Condition c) {
68	>	return super.getWaitingThreads(c);
69		}
70		}
71
72	<	public void testSignal_IllegalMonitor() {
73	<	final ReentrantLock lock = new ReentrantLock();
74	<	final Condition c = lock.newCondition();
75	<	try {
76	<	c.signal();
77	<	fail("should throw");
78	<	}
79	<	catch (IllegalMonitorStateException success) {
72	>	/**
73	>	* Releases write lock, checking that it had a hold count of 1.
74	>	*/
75	>	void releaseLock(PublicReentrantLock lock) {
76	>	assertLockedByMoi(lock);
77	>	lock.unlock();
78	>	assertFalse(lock.isHeldByCurrentThread());
79	>	assertNotLocked(lock);
80	>	}
81	>
82	>	/**
83	>	* Spin-waits until lock.hasQueuedThread(t) becomes true.
84	>	*/
85	>	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
86	>	long startTime = System.nanoTime();
87	>	while (!lock.hasQueuedThread(t)) {
88	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
89	>	throw new AssertionFailedError("timed out");
90	>	Thread.yield();
91		}
92	<	catch (Exception ex) {
93	<	fail("should throw IMSE");
92	>	assertTrue(t.isAlive());
93	>	assertNotSame(t, lock.getOwner());
94	>	}
95	>
96	>	/**
97	>	* Checks that lock is not locked.
98	>	*/
99	>	void assertNotLocked(PublicReentrantLock lock) {
100	>	assertFalse(lock.isLocked());
101	>	assertFalse(lock.isHeldByCurrentThread());
102	>	assertNull(lock.getOwner());
103	>	assertEquals(0, lock.getHoldCount());
104	>	}
105	>
106	>	/**
107	>	* Checks that lock is locked by the given thread.
108	>	*/
109	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
110	>	assertTrue(lock.isLocked());
111	>	assertSame(t, lock.getOwner());
112	>	assertEquals(t == Thread.currentThread(),
113	>	lock.isHeldByCurrentThread());
114	>	assertEquals(t == Thread.currentThread(),
115	>	lock.getHoldCount() > 0);
116	>	}
117	>
118	>	/**
119	>	* Checks that lock is locked by the current thread.
120	>	*/
121	>	void assertLockedByMoi(PublicReentrantLock lock) {
122	>	assertLockedBy(lock, Thread.currentThread());
123	>	}
124	>
125	>	/**
126	>	* Checks that condition c has no waiters.
127	>	*/
128	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
129	>	assertHasWaiters(lock, c, new Thread[] {});
130	>	}
131	>
132	>	/**
133	>	* Checks that condition c has exactly the given waiter threads.
134	>	*/
135	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
136	>	Thread... threads) {
137	>	lock.lock();
138	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
139	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
140	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
141	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
142	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
143	>	new HashSet<Thread>(Arrays.asList(threads)));
144	>	lock.unlock();
145	>	}
146	>
147	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
148	>
149	>	/**
150	>	* Awaits condition "indefinitely" using the specified AwaitMethod.
151	>	*/
152	>	void await(Condition c, AwaitMethod awaitMethod)
153	>	throws InterruptedException {
154	>	long timeoutMillis = 2 * LONG_DELAY_MS;
155	>	switch (awaitMethod) {
156	>	case await:
157	>	c.await();
158	>	break;
159	>	case awaitTimed:
160	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
161	>	break;
162	>	case awaitNanos:
163	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
164	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
165	>	assertTrue(nanosRemaining > timeoutNanos / 2);
166	>	assertTrue(nanosRemaining <= timeoutNanos);
167	>	break;
168	>	case awaitUntil:
169	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
170	>	break;
171	>	default:
172	>	throw new AssertionError();
173		}
174		}
175
176	<	public void testAwaitNanos_Timeout() {
177	<	final ReentrantLock lock = new ReentrantLock();
178	<	final Condition c = lock.newCondition();
176	>	/**
177	>	* Constructor sets given fairness, and is in unlocked state
178	>	*/
179	>	public void testConstructor() {
180	>	PublicReentrantLock lock;
181	>
182	>	lock = new PublicReentrantLock();
183	>	assertFalse(lock.isFair());
184	>	assertNotLocked(lock);
185	>
186	>	lock = new PublicReentrantLock(true);
187	>	assertTrue(lock.isFair());
188	>	assertNotLocked(lock);
189	>
190	>	lock = new PublicReentrantLock(false);
191	>	assertFalse(lock.isFair());
192	>	assertNotLocked(lock);
193	>	}
194	>
195	>	/**
196	>	* locking an unlocked lock succeeds
197	>	*/
198	>	public void testLock()      { testLock(false); }
199	>	public void testLock_fair() { testLock(true); }
200	>	public void testLock(boolean fair) {
201	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
202	>	lock.lock();
203	>	assertLockedByMoi(lock);
204	>	releaseLock(lock);
205	>	}
206	>
207	>	/**
208	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
209	>	*/
210	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
211	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
212	>	public void testUnlock_IMSE(boolean fair) {
213	>	final ReentrantLock lock = new ReentrantLock(fair);
214		try {
188	–	lock.lock();
189	–	long t = c.awaitNanos(100);
190	–	assertTrue(t <= 0);
215		lock.unlock();
216	<	}
217	<	catch (Exception ex) {
194	<	fail("unexpected exception");
195	<	}
216	>	shouldThrow();
217	>	} catch (IllegalMonitorStateException success) {}
218		}
219
220	<	public void testAwait_Timeout() {
221	<	final ReentrantLock lock = new ReentrantLock();
222	<	final Condition c = lock.newCondition();
220	>	/**
221	>	* tryLock on an unlocked lock succeeds
222	>	*/
223	>	public void testTryLock()      { testTryLock(false); }
224	>	public void testTryLock_fair() { testTryLock(true); }
225	>	public void testTryLock(boolean fair) {
226	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
227	>	assertTrue(lock.tryLock());
228	>	assertLockedByMoi(lock);
229	>	assertTrue(lock.tryLock());
230	>	assertLockedByMoi(lock);
231	>	lock.unlock();
232	>	releaseLock(lock);
233	>	}
234	>
235	>	/**
236	>	* hasQueuedThreads reports whether there are waiting threads
237	>	*/
238	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
239	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
240	>	public void testHasQueuedThreads(boolean fair) {
241	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
242	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
243	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
244	>	assertFalse(lock.hasQueuedThreads());
245	>	lock.lock();
246	>	assertFalse(lock.hasQueuedThreads());
247	>	t1.start();
248	>	waitForQueuedThread(lock, t1);
249	>	assertTrue(lock.hasQueuedThreads());
250	>	t2.start();
251	>	waitForQueuedThread(lock, t2);
252	>	assertTrue(lock.hasQueuedThreads());
253	>	t1.interrupt();
254	>	awaitTermination(t1);
255	>	assertTrue(lock.hasQueuedThreads());
256	>	lock.unlock();
257	>	awaitTermination(t2);
258	>	assertFalse(lock.hasQueuedThreads());
259	>	}
260	>
261	>	/**
262	>	* getQueueLength reports number of waiting threads
263	>	*/
264	>	public void testGetQueueLength()      { testGetQueueLength(false); }
265	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
266	>	public void testGetQueueLength(boolean fair) {
267	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
268	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
269	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
270	>	assertEquals(0, lock.getQueueLength());
271	>	lock.lock();
272	>	t1.start();
273	>	waitForQueuedThread(lock, t1);
274	>	assertEquals(1, lock.getQueueLength());
275	>	t2.start();
276	>	waitForQueuedThread(lock, t2);
277	>	assertEquals(2, lock.getQueueLength());
278	>	t1.interrupt();
279	>	awaitTermination(t1);
280	>	assertEquals(1, lock.getQueueLength());
281	>	lock.unlock();
282	>	awaitTermination(t2);
283	>	assertEquals(0, lock.getQueueLength());
284	>	}
285	>
286	>	/**
287	>	* hasQueuedThread(null) throws NPE
288	>	*/
289	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
290	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
291	>	public void testHasQueuedThreadNPE(boolean fair) {
292	>	final ReentrantLock lock = new ReentrantLock(fair);
293		try {
294	+	lock.hasQueuedThread(null);
295	+	shouldThrow();
296	+	} catch (NullPointerException success) {}
297	+	}
298	+
299	+	/**
300	+	* hasQueuedThread reports whether a thread is queued
301	+	*/
302	+	public void testHasQueuedThread()      { testHasQueuedThread(false); }
303	+	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
304	+	public void testHasQueuedThread(boolean fair) {
305	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
306	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
307	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
308	+	assertFalse(lock.hasQueuedThread(t1));
309	+	assertFalse(lock.hasQueuedThread(t2));
310	+	lock.lock();
311	+	t1.start();
312	+	waitForQueuedThread(lock, t1);
313	+	assertTrue(lock.hasQueuedThread(t1));
314	+	assertFalse(lock.hasQueuedThread(t2));
315	+	t2.start();
316	+	waitForQueuedThread(lock, t2);
317	+	assertTrue(lock.hasQueuedThread(t1));
318	+	assertTrue(lock.hasQueuedThread(t2));
319	+	t1.interrupt();
320	+	awaitTermination(t1);
321	+	assertFalse(lock.hasQueuedThread(t1));
322	+	assertTrue(lock.hasQueuedThread(t2));
323	+	lock.unlock();
324	+	awaitTermination(t2);
325	+	assertFalse(lock.hasQueuedThread(t1));
326	+	assertFalse(lock.hasQueuedThread(t2));
327	+	}
328	+
329	+	/**
330	+	* getQueuedThreads includes waiting threads
331	+	*/
332	+	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
333	+	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
334	+	public void testGetQueuedThreads(boolean fair) {
335	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
336	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
337	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
338	+	assertTrue(lock.getQueuedThreads().isEmpty());
339	+	lock.lock();
340	+	assertTrue(lock.getQueuedThreads().isEmpty());
341	+	t1.start();
342	+	waitForQueuedThread(lock, t1);
343	+	assertEquals(1, lock.getQueuedThreads().size());
344	+	assertTrue(lock.getQueuedThreads().contains(t1));
345	+	t2.start();
346	+	waitForQueuedThread(lock, t2);
347	+	assertEquals(2, lock.getQueuedThreads().size());
348	+	assertTrue(lock.getQueuedThreads().contains(t1));
349	+	assertTrue(lock.getQueuedThreads().contains(t2));
350	+	t1.interrupt();
351	+	awaitTermination(t1);
352	+	assertFalse(lock.getQueuedThreads().contains(t1));
353	+	assertTrue(lock.getQueuedThreads().contains(t2));
354	+	assertEquals(1, lock.getQueuedThreads().size());
355	+	lock.unlock();
356	+	awaitTermination(t2);
357	+	assertTrue(lock.getQueuedThreads().isEmpty());
358	+	}
359	+
360	+	/**
361	+	* timed tryLock is interruptible
362	+	*/
363	+	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
364	+	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
365	+	public void testTryLock_Interruptible(boolean fair) {
366	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
367	+	lock.lock();
368	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
369	+	public void realRun() throws InterruptedException {
370	+	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
371	+	}});
372	+
373	+	waitForQueuedThread(lock, t);
374	+	t.interrupt();
375	+	awaitTermination(t);
376	+	releaseLock(lock);
377	+	}
378	+
379	+	/**
380	+	* tryLock on a locked lock fails
381	+	*/
382	+	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
383	+	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
384	+	public void testTryLockWhenLocked(boolean fair) {
385	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
386	+	lock.lock();
387	+	Thread t = newStartedThread(new CheckedRunnable() {
388	+	public void realRun() {
389	+	assertFalse(lock.tryLock());
390	+	}});
391	+
392	+	awaitTermination(t);
393	+	releaseLock(lock);
394	+	}
395	+
396	+	/**
397	+	* Timed tryLock on a locked lock times out
398	+	*/
399	+	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
400	+	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
401	+	public void testTryLock_Timeout(boolean fair) {
402	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
403	+	final long timeoutMillis = timeoutMillis();
404	+	lock.lock();
405	+	Thread t = newStartedThread(new CheckedRunnable() {
406	+	public void realRun() throws InterruptedException {
407	+	long startTime = System.nanoTime();
408	+	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
409	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
410	+	}});
411	+
412	+	awaitTermination(t);
413	+	releaseLock(lock);
414	+	}
415	+
416	+	/**
417	+	* getHoldCount returns number of recursive holds
418	+	*/
419	+	public void testGetHoldCount()      { testGetHoldCount(false); }
420	+	public void testGetHoldCount_fair() { testGetHoldCount(true); }
421	+	public void testGetHoldCount(boolean fair) {
422	+	final ReentrantLock lock = new ReentrantLock(fair);
423	+	for (int i = 1; i <= SIZE; i++) {
424		lock.lock();
425	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
204	<	lock.unlock();
425	>	assertEquals(i, lock.getHoldCount());
426		}
427	<	catch (Exception ex) {
428	<	fail("unexpected exception");
427	>	for (int i = SIZE; i > 0; i--) {
428	>	lock.unlock();
429	>	assertEquals(i - 1, lock.getHoldCount());
430		}
431		}
432
433	<	public void testAwaitUntil_Timeout() {
434	<	final ReentrantLock lock = new ReentrantLock();
435	<	final Condition c = lock.newCondition();
433	>	/**
434	>	* isLocked is true when locked and false when not
435	>	*/
436	>	public void testIsLocked()      { testIsLocked(false); }
437	>	public void testIsLocked_fair() { testIsLocked(true); }
438	>	public void testIsLocked(boolean fair) {
439	>	final ReentrantLock lock = new ReentrantLock(fair);
440		try {
441	+	assertFalse(lock.isLocked());
442	+	lock.lock();
443	+	assertTrue(lock.isLocked());
444		lock.lock();
445	<	java.util.Date d = new java.util.Date();
217	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
445	>	assertTrue(lock.isLocked());
446		lock.unlock();
447	<	}
448	<	catch (Exception ex) {
449	<	fail("unexpected exception");
450	<	}
447	>	assertTrue(lock.isLocked());
448	>	lock.unlock();
449	>	assertFalse(lock.isLocked());
450	>	final CyclicBarrier barrier = new CyclicBarrier(2);
451	>	Thread t = newStartedThread(new CheckedRunnable() {
452	>	public void realRun() throws Exception {
453	>	lock.lock();
454	>	assertTrue(lock.isLocked());
455	>	barrier.await();
456	>	barrier.await();
457	>	lock.unlock();
458	>	}});
459	>
460	>	barrier.await();
461	>	assertTrue(lock.isLocked());
462	>	barrier.await();
463	>	awaitTermination(t);
464	>	assertFalse(lock.isLocked());
465	>	} catch (Exception fail) { threadUnexpectedException(fail); }
466		}
467
468	<	public void testAwait() {
469	<	final ReentrantLock lock = new ReentrantLock();
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 fail) { threadUnexpectedException(fail); }
478	>	assertLockedByMoi(lock);
479	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
480	>	waitForQueuedThread(lock, t);
481	>	t.interrupt();
482	>	assertTrue(lock.isLocked());
483	>	assertTrue(lock.isHeldByCurrentThread());
484	>	awaitTermination(t);
485	>	releaseLock(lock);
486	>	}
487	>
488	>	/**
489	>	* Calling await without holding lock throws IllegalMonitorStateException
490	>	*/
491	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
492	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
493	>	public void testAwait_IMSE(boolean fair) {
494	>	final ReentrantLock lock = new ReentrantLock(fair);
495		final Condition c = lock.newCondition();
496	<	Thread t = new Thread(new Runnable() {
497	<	public void run() {
498	<	try {
499	<	lock.lock();
500	<	c.await();
501	<	lock.unlock();
502	<	}
503	<	catch(InterruptedException e) {
504	<	fail("unexpected exception");
505	<	}
238	<	}
239	<	});
496	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
497	>	long startTime = System.nanoTime();
498	>	try {
499	>	await(c, awaitMethod);
500	>	shouldThrow();
501	>	} catch (IllegalMonitorStateException success) {
502	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
503	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
504	>	}
505	>	}
506
507	+	/**
508	+	* Calling signal without holding lock throws IllegalMonitorStateException
509	+	*/
510	+	public void testSignal_IMSE()      { testSignal_IMSE(false); }
511	+	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
512	+	public void testSignal_IMSE(boolean fair) {
513	+	final ReentrantLock lock = new ReentrantLock(fair);
514	+	final Condition c = lock.newCondition();
515		try {
242	–	t.start();
243	–	Thread.sleep(SHORT_DELAY_MS);
244	–	lock.lock();
516		c.signal();
517	<	lock.unlock();
518	<	t.join(SHORT_DELAY_MS);
248	<	assertFalse(t.isAlive());
249	<	}
250	<	catch (Exception ex) {
251	<	fail("unexpected exception");
252	<	}
517	>	shouldThrow();
518	>	} catch (IllegalMonitorStateException success) {}
519		}
520
521	<	public void testAwaitUninterruptibly() {
522	<	final ReentrantLock lock = new ReentrantLock();
521	>	/**
522	>	* awaitNanos without a signal times out
523	>	*/
524	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
525	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
526	>	public void testAwaitNanos_Timeout(boolean fair) {
527	>	final ReentrantLock lock = new ReentrantLock(fair);
528		final Condition c = lock.newCondition();
529	<	Thread t = new Thread(new Runnable() {
530	<	public void run() {
531	<	lock.lock();
532	<	c.awaitUninterruptibly();
533	<	lock.unlock();
534	<	}
535	<	});
529	>	final long timeoutMillis = timeoutMillis();
530	>	final long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
531	>	lock.lock();
532	>	final long startTime = System.nanoTime();
533	>	try {
534	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
535	>	assertTrue(nanosRemaining <= 0);
536	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
537	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
538	>	lock.unlock();
539	>	}
540
541	+	/**
542	+	* timed await without a signal times out
543	+	*/
544	+	public void testAwait_Timeout()      { testAwait_Timeout(false); }
545	+	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
546	+	public void testAwait_Timeout(boolean fair) {
547	+	final ReentrantLock lock = new ReentrantLock(fair);
548	+	final Condition c = lock.newCondition();
549	+	final long timeoutMillis = timeoutMillis();
550	+	lock.lock();
551	+	final long startTime = System.nanoTime();
552		try {
553	<	t.start();
554	<	Thread.sleep(SHORT_DELAY_MS);
555	<	t.interrupt();
556	<	lock.lock();
271	<	c.signal();
272	<	lock.unlock();
273	<	t.join(SHORT_DELAY_MS);
274	<	assertFalse(t.isAlive());
275	<	}
276	<	catch (Exception ex) {
277	<	fail("unexpected exception");
278	<	}
553	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
554	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
555	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
556	>	lock.unlock();
557		}
558
559	<	public void testAwait_Interrupt() {
560	<	final ReentrantLock lock = new ReentrantLock();
559	>	/**
560	>	* awaitUntil without a signal times out
561	>	*/
562	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
563	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
564	>	public void testAwaitUntil_Timeout(boolean fair) {
565	>	final ReentrantLock lock = new ReentrantLock(fair);
566		final Condition c = lock.newCondition();
567	<	Thread t = new Thread(new Runnable() {
568	<	public void run() {
569	<	try {
570	<	lock.lock();
571	<	c.await();
572	<	lock.unlock();
573	<	fail("should throw");
574	<	}
575	<	catch(InterruptedException success) {
576	<	}
294	<	}
295	<	});
567	>	lock.lock();
568	>	// We shouldn't assume that nanoTime and currentTimeMillis
569	>	// use the same time source, so don't use nanoTime here.
570	>	final java.util.Date delayedDate = delayedDate(timeoutMillis());
571	>	try {
572	>	assertFalse(c.awaitUntil(delayedDate));
573	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
574	>	assertTrue(new java.util.Date().getTime() >= delayedDate.getTime());
575	>	lock.unlock();
576	>	}
577
578	+	/**
579	+	* await returns when signalled
580	+	*/
581	+	public void testAwait()      { testAwait(false); }
582	+	public void testAwait_fair() { testAwait(true); }
583	+	public void testAwait(boolean fair) {
584	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
585	+	final Condition c = lock.newCondition();
586	+	final CountDownLatch locked = new CountDownLatch(1);
587	+	Thread t = newStartedThread(new CheckedRunnable() {
588	+	public void realRun() throws InterruptedException {
589	+	lock.lock();
590	+	locked.countDown();
591	+	c.await();
592	+	lock.unlock();
593	+	}});
594	+
595	+	await(locked);
596	+	lock.lock();
597	+	assertHasWaiters(lock, c, t);
598	+	c.signal();
599	+	assertHasNoWaiters(lock, c);
600	+	assertTrue(t.isAlive());
601	+	lock.unlock();
602	+	awaitTermination(t);
603	+	}
604	+
605	+	/**
606	+	* hasWaiters throws NPE if null
607	+	*/
608	+	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
609	+	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
610	+	public void testHasWaitersNPE(boolean fair) {
611	+	final ReentrantLock lock = new ReentrantLock(fair);
612		try {
613	<	t.start();
614	<	Thread.sleep(SHORT_DELAY_MS);
615	<	t.interrupt();
301	<	t.join(SHORT_DELAY_MS);
302	<	assertFalse(t.isAlive());
303	<	}
304	<	catch (Exception ex) {
305	<	fail("unexpected exception");
306	<	}
613	>	lock.hasWaiters(null);
614	>	shouldThrow();
615	>	} catch (NullPointerException success) {}
616		}
617
618	<	public void testAwaitNanos_Interrupt() {
619	<	final ReentrantLock lock = new ReentrantLock();
618	>	/**
619	>	* getWaitQueueLength throws NPE if null
620	>	*/
621	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
622	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
623	>	public void testGetWaitQueueLengthNPE(boolean fair) {
624	>	final ReentrantLock lock = new ReentrantLock(fair);
625	>	try {
626	>	lock.getWaitQueueLength(null);
627	>	shouldThrow();
628	>	} catch (NullPointerException success) {}
629	>	}
630	>
631	>	/**
632	>	* getWaitingThreads throws NPE if null
633	>	*/
634	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
635	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
636	>	public void testGetWaitingThreadsNPE(boolean fair) {
637	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
638	>	try {
639	>	lock.getWaitingThreads(null);
640	>	shouldThrow();
641	>	} catch (NullPointerException success) {}
642	>	}
643	>
644	>	/**
645	>	* hasWaiters throws IllegalArgumentException if not owned
646	>	*/
647	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
648	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
649	>	public void testHasWaitersIAE(boolean fair) {
650	>	final ReentrantLock lock = new ReentrantLock(fair);
651		final Condition c = lock.newCondition();
652	<	Thread t = new Thread(new Runnable() {
653	<	public void run() {
654	<	try {
655	<	lock.lock();
656	<	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	<	}
652	>	final ReentrantLock lock2 = new ReentrantLock(fair);
653	>	try {
654	>	lock2.hasWaiters(c);
655	>	shouldThrow();
656	>	} catch (IllegalArgumentException success) {}
657		}
658
659	<	public void testAwaitUntil_Interrupt() {
660	<	final ReentrantLock lock = new ReentrantLock();
661	<	final Condition c = lock.newCondition();
662	<	Thread t = new Thread(new Runnable() {
663	<	public void run() {
664	<	try {
665	<	lock.lock();
666	<	java.util.Date d = new java.util.Date();
667	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
668	<	lock.unlock();
669	<	fail("should throw");
670	<	}
671	<	catch(InterruptedException success) {
350	<	}
351	<	}
352	<	});
659	>	/**
660	>	* hasWaiters throws IllegalMonitorStateException if not locked
661	>	*/
662	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
663	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
664	>	public void testHasWaitersIMSE(boolean fair) {
665	>	final ReentrantLock lock = new ReentrantLock(fair);
666	>	final Condition c = lock.newCondition();
667	>	try {
668	>	lock.hasWaiters(c);
669	>	shouldThrow();
670	>	} catch (IllegalMonitorStateException success) {}
671	>	}
672
673	+	/**
674	+	* getWaitQueueLength throws IllegalArgumentException if not owned
675	+	*/
676	+	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
677	+	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
678	+	public void testGetWaitQueueLengthIAE(boolean fair) {
679	+	final ReentrantLock lock = new ReentrantLock(fair);
680	+	final Condition c = lock.newCondition();
681	+	final ReentrantLock lock2 = new ReentrantLock(fair);
682		try {
683	<	t.start();
684	<	Thread.sleep(SHORT_DELAY_MS);
685	<	t.interrupt();
358	<	t.join(SHORT_DELAY_MS);
359	<	assertFalse(t.isAlive());
360	<	}
361	<	catch (Exception ex) {
362	<	fail("unexpected exception");
363	<	}
683	>	lock2.getWaitQueueLength(c);
684	>	shouldThrow();
685	>	} catch (IllegalArgumentException success) {}
686		}
687
688	<	public void testSignalAll() {
689	<	final ReentrantLock lock = new ReentrantLock();
688	>	/**
689	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
690	>	*/
691	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
692	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
693	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
694	>	final ReentrantLock lock = new ReentrantLock(fair);
695		final Condition c = lock.newCondition();
696	<	Thread t1 = new Thread(new Runnable() {
697	<	public void run() {
698	<	try {
699	<	lock.lock();
700	<	c.await();
374	<	lock.unlock();
375	<	}
376	<	catch(InterruptedException e) {
377	<	fail("unexpected exception");
378	<	}
379	<	}
380	<	});
381	<
382	<	Thread t2 = new Thread(new Runnable() {
383	<	public void run() {
384	<	try {
385	<	lock.lock();
386	<	c.await();
387	<	lock.unlock();
388	<	}
389	<	catch(InterruptedException e) {
390	<	fail("unexpected exception");
391	<	}
392	<	}
393	<	});
696	>	try {
697	>	lock.getWaitQueueLength(c);
698	>	shouldThrow();
699	>	} catch (IllegalMonitorStateException success) {}
700	>	}
701
702	+	/**
703	+	* getWaitingThreads throws IllegalArgumentException if not owned
704	+	*/
705	+	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
706	+	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
707	+	public void testGetWaitingThreadsIAE(boolean fair) {
708	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
709	+	final Condition c = lock.newCondition();
710	+	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
711		try {
712	<	t1.start();
713	<	t2.start();
714	<	Thread.sleep(SHORT_DELAY_MS);
715	<	lock.lock();
716	<	c.signalAll();
717	<	lock.unlock();
718	<	t1.join(SHORT_DELAY_MS);
719	<	t2.join(SHORT_DELAY_MS);
720	<	assertFalse(t1.isAlive());
721	<	assertFalse(t2.isAlive());
722	<	}
723	<	catch (Exception ex) {
724	<	fail("unexpected exception");
725	<	}
712	>	lock2.getWaitingThreads(c);
713	>	shouldThrow();
714	>	} catch (IllegalArgumentException success) {}
715	>	}
716	>
717	>	/**
718	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
719	>	*/
720	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
721	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
722	>	public void testGetWaitingThreadsIMSE(boolean fair) {
723	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
724	>	final Condition c = lock.newCondition();
725	>	try {
726	>	lock.getWaitingThreads(c);
727	>	shouldThrow();
728	>	} catch (IllegalMonitorStateException success) {}
729	>	}
730	>
731	>	/**
732	>	* hasWaiters returns true when a thread is waiting, else false
733	>	*/
734	>	public void testHasWaiters()      { testHasWaiters(false); }
735	>	public void testHasWaiters_fair() { testHasWaiters(true); }
736	>	public void testHasWaiters(boolean fair) {
737	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
738	>	final Condition c = lock.newCondition();
739	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
740	>	Thread t = newStartedThread(new CheckedRunnable() {
741	>	public void realRun() throws InterruptedException {
742	>	lock.lock();
743	>	assertHasNoWaiters(lock, c);
744	>	assertFalse(lock.hasWaiters(c));
745	>	pleaseSignal.countDown();
746	>	c.await();
747	>	assertHasNoWaiters(lock, c);
748	>	assertFalse(lock.hasWaiters(c));
749	>	lock.unlock();
750	>	}});
751	>
752	>	await(pleaseSignal);
753	>	lock.lock();
754	>	assertHasWaiters(lock, c, t);
755	>	assertTrue(lock.hasWaiters(c));
756	>	c.signal();
757	>	assertHasNoWaiters(lock, c);
758	>	assertFalse(lock.hasWaiters(c));
759	>	lock.unlock();
760	>	awaitTermination(t);
761	>	assertHasNoWaiters(lock, c);
762	>	}
763	>
764	>	/**
765	>	* getWaitQueueLength returns number of waiting threads
766	>	*/
767	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
768	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
769	>	public void testGetWaitQueueLength(boolean fair) {
770	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
771	>	final Condition c = lock.newCondition();
772	>	final CountDownLatch locked1 = new CountDownLatch(1);
773	>	final CountDownLatch locked2 = new CountDownLatch(1);
774	>	Thread t1 = new Thread(new CheckedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	assertFalse(lock.hasWaiters(c));
778	>	assertEquals(0, lock.getWaitQueueLength(c));
779	>	locked1.countDown();
780	>	c.await();
781	>	lock.unlock();
782	>	}});
783	>
784	>	Thread t2 = new Thread(new CheckedRunnable() {
785	>	public void realRun() throws InterruptedException {
786	>	lock.lock();
787	>	assertTrue(lock.hasWaiters(c));
788	>	assertEquals(1, lock.getWaitQueueLength(c));
789	>	locked2.countDown();
790	>	c.await();
791	>	lock.unlock();
792	>	}});
793	>
794	>	lock.lock();
795	>	assertEquals(0, lock.getWaitQueueLength(c));
796	>	lock.unlock();
797	>
798	>	t1.start();
799	>	await(locked1);
800	>
801	>	lock.lock();
802	>	assertHasWaiters(lock, c, t1);
803	>	assertEquals(1, lock.getWaitQueueLength(c));
804	>	lock.unlock();
805	>
806	>	t2.start();
807	>	await(locked2);
808	>
809	>	lock.lock();
810	>	assertHasWaiters(lock, c, t1, t2);
811	>	assertEquals(2, lock.getWaitQueueLength(c));
812	>	c.signalAll();
813	>	assertHasNoWaiters(lock, c);
814	>	lock.unlock();
815	>
816	>	awaitTermination(t1);
817	>	awaitTermination(t2);
818	>
819	>	assertHasNoWaiters(lock, c);
820	>	}
821	>
822	>	/**
823	>	* getWaitingThreads returns only and all waiting threads
824	>	*/
825	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
826	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
827	>	public void testGetWaitingThreads(boolean fair) {
828	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
829	>	final Condition c = lock.newCondition();
830	>	final CountDownLatch locked1 = new CountDownLatch(1);
831	>	final CountDownLatch locked2 = new CountDownLatch(1);
832	>	Thread t1 = new Thread(new CheckedRunnable() {
833	>	public void realRun() throws InterruptedException {
834	>	lock.lock();
835	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
836	>	locked1.countDown();
837	>	c.await();
838	>	lock.unlock();
839	>	}});
840	>
841	>	Thread t2 = new Thread(new CheckedRunnable() {
842	>	public void realRun() throws InterruptedException {
843	>	lock.lock();
844	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
845	>	locked2.countDown();
846	>	c.await();
847	>	lock.unlock();
848	>	}});
849	>
850	>	lock.lock();
851	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
852	>	lock.unlock();
853	>
854	>	t1.start();
855	>	await(locked1);
856	>
857	>	lock.lock();
858	>	assertHasWaiters(lock, c, t1);
859	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
860	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
861	>	assertEquals(1, lock.getWaitingThreads(c).size());
862	>	lock.unlock();
863	>
864	>	t2.start();
865	>	await(locked2);
866	>
867	>	lock.lock();
868	>	assertHasWaiters(lock, c, t1, t2);
869	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
870	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
871	>	assertEquals(2, lock.getWaitingThreads(c).size());
872	>	c.signalAll();
873	>	assertHasNoWaiters(lock, c);
874	>	lock.unlock();
875	>
876	>	awaitTermination(t1);
877	>	awaitTermination(t2);
878	>
879	>	assertHasNoWaiters(lock, c);
880		}
881
882	+	/**
883	+	* awaitUninterruptibly is uninterruptible
884	+	*/
885	+	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
886	+	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
887	+	public void testAwaitUninterruptibly(boolean fair) {
888	+	final ReentrantLock lock = new ReentrantLock(fair);
889	+	final Condition condition = lock.newCondition();
890	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
891	+
892	+	Thread t1 = newStartedThread(new CheckedRunnable() {
893	+	public void realRun() {
894	+	// Interrupt before awaitUninterruptibly
895	+	lock.lock();
896	+	pleaseInterrupt.countDown();
897	+	Thread.currentThread().interrupt();
898	+	condition.awaitUninterruptibly();
899	+	assertTrue(Thread.interrupted());
900	+	lock.unlock();
901	+	}});
902	+
903	+	Thread t2 = newStartedThread(new CheckedRunnable() {
904	+	public void realRun() {
905	+	// Interrupt during awaitUninterruptibly
906	+	lock.lock();
907	+	pleaseInterrupt.countDown();
908	+	condition.awaitUninterruptibly();
909	+	assertTrue(Thread.interrupted());
910	+	lock.unlock();
911	+	}});
912	+
913	+	await(pleaseInterrupt);
914	+	t2.interrupt();
915	+	lock.lock();
916	+	lock.unlock();
917	+	assertThreadBlocks(t1, Thread.State.WAITING);
918	+	assertThreadBlocks(t2, Thread.State.WAITING);
919	+
920	+	lock.lock();
921	+	condition.signalAll();
922	+	lock.unlock();
923	+
924	+	awaitTermination(t1);
925	+	awaitTermination(t2);
926	+	}
927	+
928	+	/**
929	+	* await/awaitNanos/awaitUntil is interruptible
930	+	*/
931	+	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
932	+	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
933	+	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
934	+	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
935	+	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
936	+	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
937	+	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
938	+	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
939	+	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
940	+	final PublicReentrantLock lock =
941	+	new PublicReentrantLock(fair);
942	+	final Condition c = lock.newCondition();
943	+	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
944	+	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
945	+	public void realRun() throws InterruptedException {
946	+	lock.lock();
947	+	assertLockedByMoi(lock);
948	+	assertHasNoWaiters(lock, c);
949	+	pleaseInterrupt.countDown();
950	+	try {
951	+	await(c, awaitMethod);
952	+	} finally {
953	+	assertLockedByMoi(lock);
954	+	assertHasNoWaiters(lock, c);
955	+	lock.unlock();
956	+	assertFalse(Thread.interrupted());
957	+	}
958	+	}});
959	+
960	+	await(pleaseInterrupt);
961	+	assertHasWaiters(lock, c, t);
962	+	t.interrupt();
963	+	awaitTermination(t);
964	+	assertNotLocked(lock);
965	+	}
966	+
967	+	/**
968	+	* signalAll wakes up all threads
969	+	*/
970	+	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
971	+	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
972	+	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
973	+	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
974	+	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
975	+	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
976	+	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
977	+	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
978	+	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
979	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
980	+	final Condition c = lock.newCondition();
981	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
982	+	class Awaiter extends CheckedRunnable {
983	+	public void realRun() throws InterruptedException {
984	+	lock.lock();
985	+	pleaseSignal.countDown();
986	+	await(c, awaitMethod);
987	+	lock.unlock();
988	+	}
989	+	}
990	+
991	+	Thread t1 = newStartedThread(new Awaiter());
992	+	Thread t2 = newStartedThread(new Awaiter());
993	+
994	+	await(pleaseSignal);
995	+	lock.lock();
996	+	assertHasWaiters(lock, c, t1, t2);
997	+	c.signalAll();
998	+	assertHasNoWaiters(lock, c);
999	+	lock.unlock();
1000	+	awaitTermination(t1);
1001	+	awaitTermination(t2);
1002	+	}
1003	+
1004	+	/**
1005	+	* signal wakes up waiting threads in FIFO order
1006	+	*/
1007	+	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1008	+	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1009	+	public void testSignalWakesFifo(boolean fair) {
1010	+	final PublicReentrantLock lock =
1011	+	new PublicReentrantLock(fair);
1012	+	final Condition c = lock.newCondition();
1013	+	final CountDownLatch locked1 = new CountDownLatch(1);
1014	+	final CountDownLatch locked2 = new CountDownLatch(1);
1015	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1016	+	public void realRun() throws InterruptedException {
1017	+	lock.lock();
1018	+	locked1.countDown();
1019	+	c.await();
1020	+	lock.unlock();
1021	+	}});
1022	+
1023	+	await(locked1);
1024	+
1025	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1026	+	public void realRun() throws InterruptedException {
1027	+	lock.lock();
1028	+	locked2.countDown();
1029	+	c.await();
1030	+	lock.unlock();
1031	+	}});
1032	+
1033	+	await(locked2);
1034	+
1035	+	lock.lock();
1036	+	assertHasWaiters(lock, c, t1, t2);
1037	+	assertFalse(lock.hasQueuedThreads());
1038	+	c.signal();
1039	+	assertHasWaiters(lock, c, t2);
1040	+	assertTrue(lock.hasQueuedThread(t1));
1041	+	assertFalse(lock.hasQueuedThread(t2));
1042	+	c.signal();
1043	+	assertHasNoWaiters(lock, c);
1044	+	assertTrue(lock.hasQueuedThread(t1));
1045	+	assertTrue(lock.hasQueuedThread(t2));
1046	+	lock.unlock();
1047	+	awaitTermination(t1);
1048	+	awaitTermination(t2);
1049	+	}
1050	+
1051	+	/**
1052	+	* await after multiple reentrant locking preserves lock count
1053	+	*/
1054	+	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1055	+	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1056	+	public void testAwaitLockCount(boolean fair) {
1057	+	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1058	+	final Condition c = lock.newCondition();
1059	+	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1060	+	Thread t1 = newStartedThread(new CheckedRunnable() {
1061	+	public void realRun() throws InterruptedException {
1062	+	lock.lock();
1063	+	assertLockedByMoi(lock);
1064	+	assertEquals(1, lock.getHoldCount());
1065	+	pleaseSignal.countDown();
1066	+	c.await();
1067	+	assertLockedByMoi(lock);
1068	+	assertEquals(1, lock.getHoldCount());
1069	+	lock.unlock();
1070	+	}});
1071	+
1072	+	Thread t2 = newStartedThread(new CheckedRunnable() {
1073	+	public void realRun() throws InterruptedException {
1074	+	lock.lock();
1075	+	lock.lock();
1076	+	assertLockedByMoi(lock);
1077	+	assertEquals(2, lock.getHoldCount());
1078	+	pleaseSignal.countDown();
1079	+	c.await();
1080	+	assertLockedByMoi(lock);
1081	+	assertEquals(2, lock.getHoldCount());
1082	+	lock.unlock();
1083	+	lock.unlock();
1084	+	}});
1085	+
1086	+	await(pleaseSignal);
1087	+	lock.lock();
1088	+	assertHasWaiters(lock, c, t1, t2);
1089	+	assertEquals(1, lock.getHoldCount());
1090	+	c.signalAll();
1091	+	assertHasNoWaiters(lock, c);
1092	+	lock.unlock();
1093	+	awaitTermination(t1);
1094	+	awaitTermination(t2);
1095	+	}
1096	+
1097	+	/**
1098	+	* A serialized lock deserializes as unlocked
1099	+	*/
1100	+	public void testSerialization()      { testSerialization(false); }
1101	+	public void testSerialization_fair() { testSerialization(true); }
1102	+	public void testSerialization(boolean fair) {
1103	+	final ReentrantLock lock = new ReentrantLock(fair);
1104	+	lock.lock();
1105	+
1106	+	ReentrantLock clone = serialClone(lock);
1107	+	assertEquals(lock.isFair(), clone.isFair());
1108	+	assertTrue(lock.isLocked());
1109	+	assertFalse(clone.isLocked());
1110	+	assertEquals(1, lock.getHoldCount());
1111	+	assertEquals(0, clone.getHoldCount());
1112	+	clone.lock();
1113	+	clone.lock();
1114	+	assertTrue(clone.isLocked());
1115	+	assertEquals(2, clone.getHoldCount());
1116	+	assertEquals(1, lock.getHoldCount());
1117	+	clone.unlock();
1118	+	clone.unlock();
1119	+	assertTrue(lock.isLocked());
1120	+	assertFalse(clone.isLocked());
1121	+	}
1122	+
1123	+	/**
1124	+	* toString indicates current lock state
1125	+	*/
1126	+	public void testToString()      { testToString(false); }
1127	+	public void testToString_fair() { testToString(true); }
1128	+	public void testToString(boolean fair) {
1129	+	final ReentrantLock lock = new ReentrantLock(fair);
1130	+	assertTrue(lock.toString().contains("Unlocked"));
1131	+	lock.lock();
1132	+	assertTrue(lock.toString().contains("Locked by"));
1133	+	lock.unlock();
1134	+	assertTrue(lock.toString().contains("Unlocked"));
1135	+	}
1136		}

Diff Legend

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