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 1.31 by jsr166, Sat Nov 21 02:33:20 2009 UTC vs.
Revision 1.48 by jsr166, Sat May 21 06:24:33 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
#	Line 15 | Line 15 | import java.io.*;
15
16		public class ReentrantLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21		return new TestSuite(ReentrantLockTest.class);
#	Line 32 | Line 32 | public class ReentrantLockTest extends J
32		}
33		}
34
35	–
35		/**
36		* A runnable calling lockInterruptibly that expects to be
37		* interrupted
#	Line 50 | Line 49 | public class ReentrantLockTest extends J
49		*/
50		static class PublicReentrantLock extends ReentrantLock {
51		PublicReentrantLock() { super(); }
52	+	PublicReentrantLock(boolean fair) { super(fair); }
53	+	public Thread getOwner() {
54	+	return super.getOwner();
55	+	}
56		public Collection<Thread> getQueuedThreads() {
57		return super.getQueuedThreads();
58		}
59		public Collection<Thread> getWaitingThreads(Condition c) {
60		return super.getWaitingThreads(c);
61		}
62	+	}
63
64	+	/**
65	+	* Releases write lock, checking that it had a hold count of 1.
66	+	*/
67	+	void releaseLock(PublicReentrantLock lock) {
68	+	assertLockedByMoi(lock);
69	+	lock.unlock();
70	+	assertFalse(lock.isHeldByCurrentThread());
71	+	assertNotLocked(lock);
72	+	}
73
74	+	/**
75	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
76	+	*/
77	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
78	+	long startTime = System.nanoTime();
79	+	while (!lock.hasQueuedThread(t)) {
80	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
81	+	throw new AssertionFailedError("timed out");
82	+	Thread.yield();
83	+	}
84	+	assertTrue(t.isAlive());
85	+	assertTrue(lock.getOwner() != t);
86		}
87
88		/**
89	<	* Constructor sets given fairness
89	>	* Checks that lock is not locked.
90		*/
91	<	public void testConstructor() {
92	<	assertFalse(new ReentrantLock().isFair());
93	<	assertFalse(new ReentrantLock(false).isFair());
94	<	assertTrue(new ReentrantLock(true).isFair());
91	>	void assertNotLocked(PublicReentrantLock lock) {
92	>	assertFalse(lock.isLocked());
93	>	assertFalse(lock.isHeldByCurrentThread());
94	>	assertNull(lock.getOwner());
95	>	assertEquals(0, lock.getHoldCount());
96		}
97
98		/**
99	<	* locking an unlocked lock succeeds
99	>	* Checks that lock is locked by the given thread.
100	>	*/
101	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
102	>	assertTrue(lock.isLocked());
103	>	assertSame(t, lock.getOwner());
104	>	assertEquals(t == Thread.currentThread(),
105	>	lock.isHeldByCurrentThread());
106	>	assertEquals(t == Thread.currentThread(),
107	>	lock.getHoldCount() > 0);
108	>	}
109	>
110	>	/**
111	>	* Checks that lock is locked by the current thread.
112		*/
113	<	public void testLock() {
114	<	ReentrantLock rl = new ReentrantLock();
77	<	rl.lock();
78	<	assertTrue(rl.isLocked());
79	<	rl.unlock();
80	<	assertFalse(rl.isLocked());
113	>	void assertLockedByMoi(PublicReentrantLock lock) {
114	>	assertLockedBy(lock, Thread.currentThread());
115		}
116
117		/**
118	<	* locking an unlocked fair lock succeeds
119	<	*/
120	<	public void testFairLock() {
121	<	ReentrantLock rl = new ReentrantLock(true);
122	<	rl.lock();
123	<	assertTrue(rl.isLocked());
124	<	rl.unlock();
118	>	* Checks that condition c has no waiters.
119	>	*/
120	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
121	>	assertHasWaiters(lock, c, new Thread[] {});
122	>	}
123	>
124	>	/**
125	>	* Checks that condition c has exactly the given waiter threads.
126	>	*/
127	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
128	>	Thread... threads) {
129	>	lock.lock();
130	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
131	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
132	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
133	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
134	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
135	>	new HashSet<Thread>(Arrays.asList(threads)));
136	>	lock.unlock();
137	>	}
138	>
139	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil };
140	>
141	>	/**
142	>	* Awaits condition using the specified AwaitMethod.
143	>	*/
144	>	void await(Condition c, AwaitMethod awaitMethod)
145	>	throws InterruptedException {
146	>	long timeoutMillis = 2 * LONG_DELAY_MS;
147	>	switch (awaitMethod) {
148	>	case await:
149	>	c.await();
150	>	break;
151	>	case awaitTimed:
152	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
153	>	break;
154	>	case awaitNanos:
155	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
156	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
157	>	assertTrue(nanosRemaining > 0);
158	>	break;
159	>	case awaitUntil:
160	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
161	>	break;
162	>	}
163	>	}
164	>
165	>	/**
166	>	* Constructor sets given fairness, and is in unlocked state
167	>	*/
168	>	public void testConstructor() {
169	>	PublicReentrantLock lock;
170	>
171	>	lock = new PublicReentrantLock();
172	>	assertFalse(lock.isFair());
173	>	assertNotLocked(lock);
174	>
175	>	lock = new PublicReentrantLock(true);
176	>	assertTrue(lock.isFair());
177	>	assertNotLocked(lock);
178	>
179	>	lock = new PublicReentrantLock(false);
180	>	assertFalse(lock.isFair());
181	>	assertNotLocked(lock);
182	>	}
183	>
184	>	/**
185	>	* locking an unlocked lock succeeds
186	>	*/
187	>	public void testLock()      { testLock(false); }
188	>	public void testLock_fair() { testLock(true); }
189	>	public void testLock(boolean fair) {
190	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
191	>	lock.lock();
192	>	assertLockedByMoi(lock);
193	>	releaseLock(lock);
194		}
195
196		/**
197		* Unlocking an unlocked lock throws IllegalMonitorStateException
198		*/
199	<	public void testUnlock_IllegalMonitorStateException() {
200	<	ReentrantLock rl = new ReentrantLock();
199	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
200	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
201	>	public void testUnlock_IMSE(boolean fair) {
202	>	ReentrantLock lock = new ReentrantLock(fair);
203		try {
204	<	rl.unlock();
204	>	lock.unlock();
205		shouldThrow();
206		} catch (IllegalMonitorStateException success) {}
207		}
#	Line 104 | Line 209 | public class ReentrantLockTest extends J
209		/**
210		* tryLock on an unlocked lock succeeds
211		*/
212	<	public void testTryLock() {
213	<	ReentrantLock rl = new ReentrantLock();
214	<	assertTrue(rl.tryLock());
215	<	assertTrue(rl.isLocked());
216	<	rl.unlock();
212	>	public void testTryLock()      { testTryLock(false); }
213	>	public void testTryLock_fair() { testTryLock(true); }
214	>	public void testTryLock(boolean fair) {
215	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
216	>	assertTrue(lock.tryLock());
217	>	assertLockedByMoi(lock);
218	>	assertTrue(lock.tryLock());
219	>	assertLockedByMoi(lock);
220	>	lock.unlock();
221	>	releaseLock(lock);
222		}
223
114	–
224		/**
225		* hasQueuedThreads reports whether there are waiting threads
226		*/
227	<	public void testhasQueuedThreads() throws InterruptedException {
228	<	final ReentrantLock lock = new ReentrantLock();
227	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
228	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
229	>	public void testHasQueuedThreads(boolean fair) {
230	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
231		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
232		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
233		assertFalse(lock.hasQueuedThreads());
234		lock.lock();
235	+	assertFalse(lock.hasQueuedThreads());
236		t1.start();
237	<	Thread.sleep(SHORT_DELAY_MS);
237	>	waitForQueuedThread(lock, t1);
238		assertTrue(lock.hasQueuedThreads());
239		t2.start();
240	<	Thread.sleep(SHORT_DELAY_MS);
240	>	waitForQueuedThread(lock, t2);
241		assertTrue(lock.hasQueuedThreads());
242		t1.interrupt();
243	<	Thread.sleep(SHORT_DELAY_MS);
243	>	awaitTermination(t1);
244		assertTrue(lock.hasQueuedThreads());
245		lock.unlock();
246	<	Thread.sleep(SHORT_DELAY_MS);
246	>	awaitTermination(t2);
247		assertFalse(lock.hasQueuedThreads());
136	–	t1.join();
137	–	t2.join();
248		}
249
250		/**
251		* getQueueLength reports number of waiting threads
252		*/
253	<	public void testGetQueueLength() throws InterruptedException {
254	<	final ReentrantLock lock = new ReentrantLock();
253	>	public void testGetQueueLength()      { testGetQueueLength(false); }
254	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
255	>	public void testGetQueueLength(boolean fair) {
256	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
257		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
258		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
259		assertEquals(0, lock.getQueueLength());
260		lock.lock();
261		t1.start();
262	<	Thread.sleep(SHORT_DELAY_MS);
262	>	waitForQueuedThread(lock, t1);
263		assertEquals(1, lock.getQueueLength());
264		t2.start();
265	<	Thread.sleep(SHORT_DELAY_MS);
265	>	waitForQueuedThread(lock, t2);
266		assertEquals(2, lock.getQueueLength());
267		t1.interrupt();
268	<	Thread.sleep(SHORT_DELAY_MS);
268	>	awaitTermination(t1);
269		assertEquals(1, lock.getQueueLength());
270		lock.unlock();
271	<	Thread.sleep(SHORT_DELAY_MS);
271	>	awaitTermination(t2);
272		assertEquals(0, lock.getQueueLength());
161	–	t1.join();
162	–	t2.join();
163	–	}
164	–
165	–	/**
166	–	* getQueueLength reports number of waiting threads
167	–	*/
168	–	public void testGetQueueLength_fair() throws InterruptedException {
169	–	final ReentrantLock lock = new ReentrantLock(true);
170	–	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
171	–	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
172	–	assertEquals(0, lock.getQueueLength());
173	–	lock.lock();
174	–	t1.start();
175	–	Thread.sleep(SHORT_DELAY_MS);
176	–	assertEquals(1, lock.getQueueLength());
177	–	t2.start();
178	–	Thread.sleep(SHORT_DELAY_MS);
179	–	assertEquals(2, lock.getQueueLength());
180	–	t1.interrupt();
181	–	Thread.sleep(SHORT_DELAY_MS);
182	–	assertEquals(1, lock.getQueueLength());
183	–	lock.unlock();
184	–	Thread.sleep(SHORT_DELAY_MS);
185	–	assertEquals(0, lock.getQueueLength());
186	–	t1.join();
187	–	t2.join();
273		}
274
275		/**
276		* hasQueuedThread(null) throws NPE
277		*/
278	<	public void testHasQueuedThreadNPE() {
279	<	final ReentrantLock sync = new ReentrantLock();
278	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
279	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
280	>	public void testHasQueuedThreadNPE(boolean fair) {
281	>	final ReentrantLock lock = new ReentrantLock(fair);
282		try {
283	<	sync.hasQueuedThread(null);
283	>	lock.hasQueuedThread(null);
284		shouldThrow();
285		} catch (NullPointerException success) {}
286		}
#	Line 201 | Line 288 | public class ReentrantLockTest extends J
288		/**
289		* hasQueuedThread reports whether a thread is queued.
290		*/
291	<	public void testHasQueuedThread() throws InterruptedException {
292	<	final ReentrantLock sync = new ReentrantLock();
293	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
294	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
295	<	assertFalse(sync.hasQueuedThread(t1));
296	<	assertFalse(sync.hasQueuedThread(t2));
297	<	sync.lock();
291	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
292	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
293	>	public void testHasQueuedThread(boolean fair) {
294	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
295	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
296	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
297	>	assertFalse(lock.hasQueuedThread(t1));
298	>	assertFalse(lock.hasQueuedThread(t2));
299	>	lock.lock();
300		t1.start();
301	<	Thread.sleep(SHORT_DELAY_MS);
302	<	assertTrue(sync.hasQueuedThread(t1));
301	>	waitForQueuedThread(lock, t1);
302	>	assertTrue(lock.hasQueuedThread(t1));
303	>	assertFalse(lock.hasQueuedThread(t2));
304		t2.start();
305	<	Thread.sleep(SHORT_DELAY_MS);
306	<	assertTrue(sync.hasQueuedThread(t1));
307	<	assertTrue(sync.hasQueuedThread(t2));
305	>	waitForQueuedThread(lock, t2);
306	>	assertTrue(lock.hasQueuedThread(t1));
307	>	assertTrue(lock.hasQueuedThread(t2));
308		t1.interrupt();
309	<	Thread.sleep(SHORT_DELAY_MS);
310	<	assertFalse(sync.hasQueuedThread(t1));
311	<	assertTrue(sync.hasQueuedThread(t2));
312	<	sync.unlock();
313	<	Thread.sleep(SHORT_DELAY_MS);
314	<	assertFalse(sync.hasQueuedThread(t1));
315	<	Thread.sleep(SHORT_DELAY_MS);
226	<	assertFalse(sync.hasQueuedThread(t2));
227	<	t1.join();
228	<	t2.join();
309	>	awaitTermination(t1);
310	>	assertFalse(lock.hasQueuedThread(t1));
311	>	assertTrue(lock.hasQueuedThread(t2));
312	>	lock.unlock();
313	>	awaitTermination(t2);
314	>	assertFalse(lock.hasQueuedThread(t1));
315	>	assertFalse(lock.hasQueuedThread(t2));
316		}
317
231	–
318		/**
319		* getQueuedThreads includes waiting threads
320		*/
321	<	public void testGetQueuedThreads() throws InterruptedException {
322	<	final PublicReentrantLock lock = new PublicReentrantLock();
321	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
322	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
323	>	public void testGetQueuedThreads(boolean fair) {
324	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
325		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
326		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
327		assertTrue(lock.getQueuedThreads().isEmpty());
328		lock.lock();
329		assertTrue(lock.getQueuedThreads().isEmpty());
330		t1.start();
331	<	Thread.sleep(SHORT_DELAY_MS);
331	>	waitForQueuedThread(lock, t1);
332	>	assertEquals(1, lock.getQueuedThreads().size());
333		assertTrue(lock.getQueuedThreads().contains(t1));
334		t2.start();
335	<	Thread.sleep(SHORT_DELAY_MS);
335	>	waitForQueuedThread(lock, t2);
336	>	assertEquals(2, lock.getQueuedThreads().size());
337		assertTrue(lock.getQueuedThreads().contains(t1));
338		assertTrue(lock.getQueuedThreads().contains(t2));
339		t1.interrupt();
340	<	Thread.sleep(SHORT_DELAY_MS);
340	>	awaitTermination(t1);
341		assertFalse(lock.getQueuedThreads().contains(t1));
342		assertTrue(lock.getQueuedThreads().contains(t2));
343	+	assertEquals(1, lock.getQueuedThreads().size());
344		lock.unlock();
345	<	Thread.sleep(SHORT_DELAY_MS);
345	>	awaitTermination(t2);
346		assertTrue(lock.getQueuedThreads().isEmpty());
256	–	t1.join();
257	–	t2.join();
347		}
348
260	–
349		/**
350		* timed tryLock is interruptible.
351		*/
352	<	public void testInterruptedException2() throws InterruptedException {
353	<	final ReentrantLock lock = new ReentrantLock();
352	>	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
353	>	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
354	>	public void testTryLock_Interruptible(boolean fair) {
355	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
356		lock.lock();
357	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
357	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
358		public void realRun() throws InterruptedException {
359	<	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
359	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
360		}});
361
362	<	t.start();
362	>	waitForQueuedThread(lock, t);
363		t.interrupt();
364	<	t.join();
364	>	awaitTermination(t);
365	>	releaseLock(lock);
366		}
367
277	–
368		/**
369	<	* TryLock on a locked lock fails
369	>	* tryLock on a locked lock fails
370		*/
371	<	public void testTryLockWhenLocked() throws InterruptedException {
372	<	final ReentrantLock lock = new ReentrantLock();
371	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
372	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
373	>	public void testTryLockWhenLocked(boolean fair) {
374	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
375		lock.lock();
376	<	Thread t = new Thread(new CheckedRunnable() {
376	>	Thread t = newStartedThread(new CheckedRunnable() {
377		public void realRun() {
378	<	threadAssertFalse(lock.tryLock());
378	>	assertFalse(lock.tryLock());
379		}});
380
381	<	t.start();
382	<	t.join();
291	<	lock.unlock();
381	>	awaitTermination(t);
382	>	releaseLock(lock);
383		}
384
385		/**
386		* Timed tryLock on a locked lock times out
387		*/
388	<	public void testTryLock_Timeout() throws InterruptedException {
389	<	final ReentrantLock lock = new ReentrantLock();
388	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
389	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
390	>	public void testTryLock_Timeout(boolean fair) {
391	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
392		lock.lock();
393	<	Thread t = new Thread(new CheckedRunnable() {
393	>	Thread t = newStartedThread(new CheckedRunnable() {
394		public void realRun() throws InterruptedException {
395	<	threadAssertFalse(lock.tryLock(1, MILLISECONDS));
395	>	long startTime = System.nanoTime();
396	>	long timeoutMillis = 10;
397	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
398	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
399		}});
400
401	<	t.start();
402	<	t.join();
307	<	lock.unlock();
401	>	awaitTermination(t);
402	>	releaseLock(lock);
403		}
404
405		/**
406		* getHoldCount returns number of recursive holds
407		*/
408	<	public void testGetHoldCount() {
409	<	ReentrantLock lock = new ReentrantLock();
408	>	public void testGetHoldCount()      { testGetHoldCount(false); }
409	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
410	>	public void testGetHoldCount(boolean fair) {
411	>	ReentrantLock lock = new ReentrantLock(fair);
412		for (int i = 1; i <= SIZE; i++) {
413		lock.lock();
414		assertEquals(i, lock.getHoldCount());
#	Line 322 | Line 419 | public class ReentrantLockTest extends J
419		}
420		}
421
325	–
422		/**
423		* isLocked is true when locked and false when not
424		*/
425	<	public void testIsLocked() throws InterruptedException {
426	<	final ReentrantLock lock = new ReentrantLock();
427	<	lock.lock();
428	<	assertTrue(lock.isLocked());
429	<	lock.unlock();
430	<	assertFalse(lock.isLocked());
431	<	Thread t = new Thread(new CheckedRunnable() {
432	<	public void realRun() throws InterruptedException {
433	<	lock.lock();
434	<	Thread.sleep(SMALL_DELAY_MS);
435	<	lock.unlock();
436	<	}});
437	<
438	<	t.start();
439	<	Thread.sleep(SHORT_DELAY_MS);
440	<	assertTrue(lock.isLocked());
441	<	t.join();
442	<	assertFalse(lock.isLocked());
443	<	}
444	<
445	<
446	<	/**
447	<	* lockInterruptibly is interruptible.
448	<	*/
449	<	public void testLockInterruptibly1() throws InterruptedException {
450	<	final ReentrantLock lock = new ReentrantLock();
451	<	lock.lock();
452	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
453	<	t.start();
454	<	Thread.sleep(SHORT_DELAY_MS);
455	<	t.interrupt();
456	<	Thread.sleep(SHORT_DELAY_MS);
361	<	lock.unlock();
362	<	t.join();
425	>	public void testIsLocked()      { testIsLocked(false); }
426	>	public void testIsLocked_fair() { testIsLocked(true); }
427	>	public void testIsLocked(boolean fair) {
428	>	try {
429	>	final ReentrantLock lock = new ReentrantLock(fair);
430	>	assertFalse(lock.isLocked());
431	>	lock.lock();
432	>	assertTrue(lock.isLocked());
433	>	lock.lock();
434	>	assertTrue(lock.isLocked());
435	>	lock.unlock();
436	>	assertTrue(lock.isLocked());
437	>	lock.unlock();
438	>	assertFalse(lock.isLocked());
439	>	final CyclicBarrier barrier = new CyclicBarrier(2);
440	>	Thread t = newStartedThread(new CheckedRunnable() {
441	>	public void realRun() throws Exception {
442	>	lock.lock();
443	>	assertTrue(lock.isLocked());
444	>	barrier.await();
445	>	barrier.await();
446	>	lock.unlock();
447	>	}});
448	>
449	>	barrier.await();
450	>	assertTrue(lock.isLocked());
451	>	barrier.await();
452	>	awaitTermination(t);
453	>	assertFalse(lock.isLocked());
454	>	} catch (Exception e) {
455	>	threadUnexpectedException(e);
456	>	}
457		}
458
459		/**
460		* lockInterruptibly succeeds when unlocked, else is interruptible
461		*/
462	<	public void testLockInterruptibly2() throws InterruptedException {
463	<	final ReentrantLock lock = new ReentrantLock();
464	<	lock.lockInterruptibly();
465	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
466	<	t.start();
462	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
463	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
464	>	public void testLockInterruptibly(boolean fair) {
465	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
466	>	try {
467	>	lock.lockInterruptibly();
468	>	} catch (InterruptedException ie) {
469	>	threadUnexpectedException(ie);
470	>	}
471	>	assertLockedByMoi(lock);
472	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
473	>	waitForQueuedThread(lock, t);
474		t.interrupt();
475		assertTrue(lock.isLocked());
476		assertTrue(lock.isHeldByCurrentThread());
477	<	t.join();
477	>	awaitTermination(t);
478	>	releaseLock(lock);
479		}
480
481		/**
482		* Calling await without holding lock throws IllegalMonitorStateException
483		*/
484	<	public void testAwait_IllegalMonitor() throws InterruptedException {
485	<	final ReentrantLock lock = new ReentrantLock();
486	<	final Condition c = lock.newCondition();
487	<	try {
488	<	c.await();
489	<	shouldThrow();
490	<	} catch (IllegalMonitorStateException success) {}
484	>	public void testAwait_IMSE()      { testAwait_IMSE(false); }
485	>	public void testAwait_IMSE_fair() { testAwait_IMSE(true); }
486	>	public void testAwait_IMSE(boolean fair) {
487	>	final ReentrantLock lock = new ReentrantLock(fair);
488	>	final Condition c = lock.newCondition();
489	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
490	>	long startTime = System.nanoTime();
491	>	try {
492	>	await(c, awaitMethod);
493	>	shouldThrow();
494	>	} catch (IllegalMonitorStateException success) {
495	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
496	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
497	>	}
498		}
499
500		/**
501		* Calling signal without holding lock throws IllegalMonitorStateException
502		*/
503	<	public void testSignal_IllegalMonitor() {
504	<	final ReentrantLock lock = new ReentrantLock();
503	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
504	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
505	>	public void testSignal_IMSE(boolean fair) {
506	>	final ReentrantLock lock = new ReentrantLock(fair);
507		final Condition c = lock.newCondition();
508		try {
509		c.signal();
#	Line 403 | Line 514 | public class ReentrantLockTest extends J
514		/**
515		* awaitNanos without a signal times out
516		*/
517	<	public void testAwaitNanos_Timeout() throws InterruptedException {
518	<	final ReentrantLock lock = new ReentrantLock();
519	<	final Condition c = lock.newCondition();
520	<	lock.lock();
521	<	long t = c.awaitNanos(100);
522	<	assertTrue(t <= 0);
523	<	lock.unlock();
517	>	public void testAwaitNanos_Timeout()      { testAwaitNanos_Timeout(false); }
518	>	public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); }
519	>	public void testAwaitNanos_Timeout(boolean fair) {
520	>	try {
521	>	final ReentrantLock lock = new ReentrantLock(fair);
522	>	final Condition c = lock.newCondition();
523	>	lock.lock();
524	>	long startTime = System.nanoTime();
525	>	long timeoutMillis = 10;
526	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
527	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
528	>	assertTrue(nanosRemaining <= 0);
529	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
530	>	lock.unlock();
531	>	} catch (InterruptedException e) {
532	>	threadUnexpectedException(e);
533	>	}
534		}
535
536		/**
537	<	*  timed await without a signal times out
537	>	* timed await without a signal times out
538		*/
539	<	public void testAwait_Timeout() throws InterruptedException {
540	<	final ReentrantLock lock = new ReentrantLock();
541	<	final Condition c = lock.newCondition();
542	<	lock.lock();
543	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
544	<	lock.unlock();
539	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
540	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
541	>	public void testAwait_Timeout(boolean fair) {
542	>	try {
543	>	final ReentrantLock lock = new ReentrantLock(fair);
544	>	final Condition c = lock.newCondition();
545	>	lock.lock();
546	>	long startTime = System.nanoTime();
547	>	long timeoutMillis = 10;
548	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
549	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
550	>	lock.unlock();
551	>	} catch (InterruptedException e) {
552	>	threadUnexpectedException(e);
553	>	}
554		}
555
556		/**
557		* awaitUntil without a signal times out
558		*/
559	<	public void testAwaitUntil_Timeout() throws InterruptedException {
560	<	final ReentrantLock lock = new ReentrantLock();
561	<	final Condition c = lock.newCondition();
562	<	lock.lock();
563	<	java.util.Date d = new java.util.Date();
564	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
565	<	lock.unlock();
559	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
560	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
561	>	public void testAwaitUntil_Timeout(boolean fair) {
562	>	try {
563	>	final ReentrantLock lock = new ReentrantLock(fair);
564	>	final Condition c = lock.newCondition();
565	>	lock.lock();
566	>	long startTime = System.nanoTime();
567	>	long timeoutMillis = 10;
568	>	java.util.Date d = new java.util.Date();
569	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
570	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
571	>	lock.unlock();
572	>	} catch (InterruptedException e) {
573	>	threadUnexpectedException(e);
574	>	}
575		}
576
577		/**
578		* await returns when signalled
579		*/
580	<	public void testAwait() throws InterruptedException {
581	<	final ReentrantLock lock = new ReentrantLock();
580	>	public void testAwait()      { testAwait(false); }
581	>	public void testAwait_fair() { testAwait(true); }
582	>	public void testAwait(boolean fair) {
583	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
584		final Condition c = lock.newCondition();
585	<	Thread t = new Thread(new CheckedRunnable() {
585	>	final CountDownLatch locked = new CountDownLatch(1);
586	>	Thread t = newStartedThread(new CheckedRunnable() {
587		public void realRun() throws InterruptedException {
588		lock.lock();
589	+	locked.countDown();
590		c.await();
591		lock.unlock();
592		}});
593
594	<	t.start();
452	<	Thread.sleep(SHORT_DELAY_MS);
594	>	await(locked);
595		lock.lock();
596	+	assertHasWaiters(lock, c, t);
597		c.signal();
598	+	assertHasNoWaiters(lock, c);
599	+	assertTrue(t.isAlive());
600		lock.unlock();
601	<	t.join(SHORT_DELAY_MS);
457	<	assertFalse(t.isAlive());
601	>	awaitTermination(t);
602		}
603
604		/**
605		* hasWaiters throws NPE if null
606		*/
607	<	public void testHasWaitersNPE() {
608	<	final ReentrantLock lock = new ReentrantLock();
607	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
608	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
609	>	public void testHasWaitersNPE(boolean fair) {
610	>	final ReentrantLock lock = new ReentrantLock(fair);
611		try {
612		lock.hasWaiters(null);
613		shouldThrow();
#	Line 471 | Line 617 | public class ReentrantLockTest extends J
617		/**
618		* getWaitQueueLength throws NPE if null
619		*/
620	<	public void testGetWaitQueueLengthNPE() {
621	<	final ReentrantLock lock = new ReentrantLock();
620	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
621	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
622	>	public void testGetWaitQueueLengthNPE(boolean fair) {
623	>	final ReentrantLock lock = new ReentrantLock(fair);
624		try {
625		lock.getWaitQueueLength(null);
626		shouldThrow();
627		} catch (NullPointerException success) {}
628		}
629
482	–
630		/**
631		* getWaitingThreads throws NPE if null
632		*/
633	<	public void testGetWaitingThreadsNPE() {
634	<	final PublicReentrantLock lock = new PublicReentrantLock();
633	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
634	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
635	>	public void testGetWaitingThreadsNPE(boolean fair) {
636	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
637		try {
638		lock.getWaitingThreads(null);
639		shouldThrow();
640		} catch (NullPointerException success) {}
641		}
642
494	–
643		/**
644	<	* hasWaiters throws IAE if not owned
644	>	* hasWaiters throws IllegalArgumentException if not owned
645		*/
646	<	public void testHasWaitersIAE() {
647	<	final ReentrantLock lock = new ReentrantLock();
646	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
647	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
648	>	public void testHasWaitersIAE(boolean fair) {
649	>	final ReentrantLock lock = new ReentrantLock(fair);
650		final Condition c = lock.newCondition();
651	<	final ReentrantLock lock2 = new ReentrantLock();
651	>	final ReentrantLock lock2 = new ReentrantLock(fair);
652		try {
653		lock2.hasWaiters(c);
654		shouldThrow();
#	Line 506 | Line 656 | public class ReentrantLockTest extends J
656		}
657
658		/**
659	<	* hasWaiters throws IMSE if not locked
659	>	* hasWaiters throws IllegalMonitorStateException if not locked
660		*/
661	<	public void testHasWaitersIMSE() {
662	<	final ReentrantLock lock = new ReentrantLock();
661	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
662	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
663	>	public void testHasWaitersIMSE(boolean fair) {
664	>	final ReentrantLock lock = new ReentrantLock(fair);
665		final Condition c = lock.newCondition();
666		try {
667		lock.hasWaiters(c);
#	Line 517 | Line 669 | public class ReentrantLockTest extends J
669		} catch (IllegalMonitorStateException success) {}
670		}
671
520	–
672		/**
673	<	* getWaitQueueLength throws IAE if not owned
673	>	* getWaitQueueLength throws IllegalArgumentException if not owned
674		*/
675	<	public void testGetWaitQueueLengthIAE() {
676	<	final ReentrantLock lock = new ReentrantLock();
675	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
676	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
677	>	public void testGetWaitQueueLengthIAE(boolean fair) {
678	>	final ReentrantLock lock = new ReentrantLock(fair);
679		final Condition c = lock.newCondition();
680	<	final ReentrantLock lock2 = new ReentrantLock();
680	>	final ReentrantLock lock2 = new ReentrantLock(fair);
681		try {
682		lock2.getWaitQueueLength(c);
683		shouldThrow();
#	Line 532 | Line 685 | public class ReentrantLockTest extends J
685		}
686
687		/**
688	<	* getWaitQueueLength throws IMSE if not locked
688	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
689		*/
690	<	public void testGetWaitQueueLengthIMSE() {
691	<	final ReentrantLock lock = new ReentrantLock();
690	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
691	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
692	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
693	>	final ReentrantLock lock = new ReentrantLock(fair);
694		final Condition c = lock.newCondition();
695		try {
696		lock.getWaitQueueLength(c);
#	Line 543 | Line 698 | public class ReentrantLockTest extends J
698		} catch (IllegalMonitorStateException success) {}
699		}
700
546	–
701		/**
702	<	* getWaitingThreads throws IAE if not owned
702	>	* getWaitingThreads throws IllegalArgumentException if not owned
703		*/
704	<	public void testGetWaitingThreadsIAE() {
705	<	final PublicReentrantLock lock = new PublicReentrantLock();
704	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
705	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
706	>	public void testGetWaitingThreadsIAE(boolean fair) {
707	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
708		final Condition c = lock.newCondition();
709	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
709	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
710		try {
711		lock2.getWaitingThreads(c);
712		shouldThrow();
#	Line 558 | Line 714 | public class ReentrantLockTest extends J
714		}
715
716		/**
717	<	* getWaitingThreads throws IMSE if not locked
717	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
718		*/
719	<	public void testGetWaitingThreadsIMSE() {
720	<	final PublicReentrantLock lock = new PublicReentrantLock();
719	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
720	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
721	>	public void testGetWaitingThreadsIMSE(boolean fair) {
722	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
723		final Condition c = lock.newCondition();
724		try {
725		lock.getWaitingThreads(c);
#	Line 569 | Line 727 | public class ReentrantLockTest extends J
727		} catch (IllegalMonitorStateException success) {}
728		}
729
572	–
730		/**
731		* hasWaiters returns true when a thread is waiting, else false
732		*/
733	<	public void testHasWaiters() throws InterruptedException {
734	<	final ReentrantLock lock = new ReentrantLock();
733	>	public void testHasWaiters()      { testHasWaiters(false); }
734	>	public void testHasWaiters_fair() { testHasWaiters(true); }
735	>	public void testHasWaiters(boolean fair) {
736	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
737		final Condition c = lock.newCondition();
738	<	Thread t = new Thread(new CheckedRunnable() {
738	>	final CountDownLatch locked = new CountDownLatch(1);
739	>	Thread t = newStartedThread(new CheckedRunnable() {
740		public void realRun() throws InterruptedException {
741		lock.lock();
742	<	threadAssertFalse(lock.hasWaiters(c));
743	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
742	>	assertHasNoWaiters(lock, c);
743	>	assertFalse(lock.hasWaiters(c));
744	>	locked.countDown();
745		c.await();
746	+	assertHasNoWaiters(lock, c);
747	+	assertFalse(lock.hasWaiters(c));
748		lock.unlock();
749		}});
750
751	<	t.start();
589	<	Thread.sleep(SHORT_DELAY_MS);
751	>	await(locked);
752		lock.lock();
753	+	assertHasWaiters(lock, c, t);
754		assertTrue(lock.hasWaiters(c));
592	–	assertEquals(1, lock.getWaitQueueLength(c));
755		c.signal();
756	<	lock.unlock();
595	<	Thread.sleep(SHORT_DELAY_MS);
596	<	lock.lock();
756	>	assertHasNoWaiters(lock, c);
757		assertFalse(lock.hasWaiters(c));
598	–	assertEquals(0, lock.getWaitQueueLength(c));
758		lock.unlock();
759	<	t.join(SHORT_DELAY_MS);
760	<	assertFalse(t.isAlive());
759	>	awaitTermination(t);
760	>	assertHasNoWaiters(lock, c);
761		}
762
763		/**
764		* getWaitQueueLength returns number of waiting threads
765		*/
766	<	public void testGetWaitQueueLength() throws InterruptedException {
767	<	final ReentrantLock lock = new ReentrantLock();
766	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
767	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
768	>	public void testGetWaitQueueLength(boolean fair) {
769	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
770		final Condition c = lock.newCondition();
771	+	final CountDownLatch locked1 = new CountDownLatch(1);
772	+	final CountDownLatch locked2 = new CountDownLatch(1);
773		Thread t1 = new Thread(new CheckedRunnable() {
774		public void realRun() throws InterruptedException {
775		lock.lock();
776	<	threadAssertFalse(lock.hasWaiters(c));
777	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
776	>	assertFalse(lock.hasWaiters(c));
777	>	assertEquals(0, lock.getWaitQueueLength(c));
778	>	locked1.countDown();
779		c.await();
780		lock.unlock();
781		}});
#	Line 619 | Line 783 | public class ReentrantLockTest extends J
783		Thread t2 = new Thread(new CheckedRunnable() {
784		public void realRun() throws InterruptedException {
785		lock.lock();
786	<	threadAssertTrue(lock.hasWaiters(c));
787	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
786	>	assertTrue(lock.hasWaiters(c));
787	>	assertEquals(1, lock.getWaitQueueLength(c));
788	>	locked2.countDown();
789		c.await();
790		lock.unlock();
791		}});
792
793	+	lock.lock();
794	+	assertEquals(0, lock.getWaitQueueLength(c));
795	+	lock.unlock();
796	+
797		t1.start();
798	<	Thread.sleep(SHORT_DELAY_MS);
798	>	await(locked1);
799	>
800	>	lock.lock();
801	>	assertHasWaiters(lock, c, t1);
802	>	assertEquals(1, lock.getWaitQueueLength(c));
803	>	lock.unlock();
804	>
805		t2.start();
806	<	Thread.sleep(SHORT_DELAY_MS);
806	>	await(locked2);
807	>
808		lock.lock();
809	<	assertTrue(lock.hasWaiters(c));
809	>	assertHasWaiters(lock, c, t1, t2);
810		assertEquals(2, lock.getWaitQueueLength(c));
811		c.signalAll();
812	+	assertHasNoWaiters(lock, c);
813		lock.unlock();
814	<	Thread.sleep(SHORT_DELAY_MS);
815	<	lock.lock();
816	<	assertFalse(lock.hasWaiters(c));
817	<	assertEquals(0, lock.getWaitQueueLength(c));
818	<	lock.unlock();
642	<	t1.join(SHORT_DELAY_MS);
643	<	t2.join(SHORT_DELAY_MS);
644	<	assertFalse(t1.isAlive());
645	<	assertFalse(t2.isAlive());
814	>
815	>	awaitTermination(t1);
816	>	awaitTermination(t2);
817	>
818	>	assertHasNoWaiters(lock, c);
819		}
820
821		/**
822		* getWaitingThreads returns only and all waiting threads
823		*/
824	<	public void testGetWaitingThreads() throws InterruptedException {
825	<	final PublicReentrantLock lock = new PublicReentrantLock();
824	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
825	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
826	>	public void testGetWaitingThreads(boolean fair) {
827	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
828		final Condition c = lock.newCondition();
829	+	final CountDownLatch locked1 = new CountDownLatch(1);
830	+	final CountDownLatch locked2 = new CountDownLatch(1);
831		Thread t1 = new Thread(new CheckedRunnable() {
832		public void realRun() throws InterruptedException {
833		lock.lock();
834	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
834	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
835	>	locked1.countDown();
836		c.await();
837		lock.unlock();
838		}});
#	Line 662 | Line 840 | public class ReentrantLockTest extends J
840		Thread t2 = new Thread(new CheckedRunnable() {
841		public void realRun() throws InterruptedException {
842		lock.lock();
843	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
843	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
844	>	locked2.countDown();
845		c.await();
846		lock.unlock();
847		}});
#	Line 670 | Line 849 | public class ReentrantLockTest extends J
849		lock.lock();
850		assertTrue(lock.getWaitingThreads(c).isEmpty());
851		lock.unlock();
852	+
853		t1.start();
854	<	Thread.sleep(SHORT_DELAY_MS);
854	>	await(locked1);
855	>
856	>	lock.lock();
857	>	assertHasWaiters(lock, c, t1);
858	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
859	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
860	>	assertEquals(1, lock.getWaitingThreads(c).size());
861	>	lock.unlock();
862	>
863		t2.start();
864	<	Thread.sleep(SHORT_DELAY_MS);
864	>	await(locked2);
865	>
866		lock.lock();
867	<	assertTrue(lock.hasWaiters(c));
867	>	assertHasWaiters(lock, c, t1, t2);
868		assertTrue(lock.getWaitingThreads(c).contains(t1));
869		assertTrue(lock.getWaitingThreads(c).contains(t2));
870	+	assertEquals(2, lock.getWaitingThreads(c).size());
871		c.signalAll();
872	+	assertHasNoWaiters(lock, c);
873		lock.unlock();
683	–	Thread.sleep(SHORT_DELAY_MS);
684	–	lock.lock();
685	–	assertFalse(lock.hasWaiters(c));
686	–	assertTrue(lock.getWaitingThreads(c).isEmpty());
687	–	lock.unlock();
688	–	t1.join(SHORT_DELAY_MS);
689	–	t2.join(SHORT_DELAY_MS);
690	–	assertFalse(t1.isAlive());
691	–	assertFalse(t2.isAlive());
692	–	}
874
875	<	/** A helper class for uninterruptible wait tests */
876	<	class UninterruptibleThread extends Thread {
696	<	private ReentrantLock lock;
697	<	private Condition c;
698	<
699	<	public volatile boolean canAwake = false;
700	<	public volatile boolean interrupted = false;
701	<	public volatile boolean lockStarted = false;
702	<
703	<	public UninterruptibleThread(ReentrantLock lock, Condition c) {
704	<	this.lock = lock;
705	<	this.c = c;
706	<	}
707	<
708	<	public synchronized void run() {
709	<	lock.lock();
710	<	lockStarted = true;
711	<
712	<	while (!canAwake) {
713	<	c.awaitUninterruptibly();
714	<	}
875	>	awaitTermination(t1);
876	>	awaitTermination(t2);
877
878	<	interrupted = isInterrupted();
717	<	lock.unlock();
718	<	}
878	>	assertHasNoWaiters(lock, c);
879		}
880
881		/**
882		* awaitUninterruptibly doesn't abort on interrupt
883		*/
884	<	public void testAwaitUninterruptibly() throws InterruptedException {
885	<	final ReentrantLock lock = new ReentrantLock();
884	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
885	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
886	>	public void testAwaitUninterruptibly(boolean fair) {
887	>	final ReentrantLock lock = new ReentrantLock(fair);
888		final Condition c = lock.newCondition();
889	<	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
890	<
891	<	thread.start();
730	<
731	<	while (!thread.lockStarted) {
732	<	Thread.sleep(100);
733	<	}
734	<
735	<	lock.lock();
736	<	try {
737	<	thread.interrupt();
738	<	thread.canAwake = true;
739	<	c.signal();
740	<	} finally {
741	<	lock.unlock();
742	<	}
743	<
744	<	thread.join();
745	<	assertTrue(thread.interrupted);
746	<	assertFalse(thread.isAlive());
747	<	}
748	<
749	<	/**
750	<	* await is interruptible
751	<	*/
752	<	public void testAwait_Interrupt() throws InterruptedException {
753	<	final ReentrantLock lock = new ReentrantLock();
754	<	final Condition c = lock.newCondition();
755	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
756	<	public void realRun() throws InterruptedException {
889	>	final CountDownLatch locked = new CountDownLatch(1);
890	>	Thread t = newStartedThread(new CheckedRunnable() {
891	>	public void realRun() {
892		lock.lock();
893	<	c.await();
893	>	locked.countDown();
894	>	c.awaitUninterruptibly();
895	>	assertTrue(Thread.interrupted());
896	>	lock.unlock();
897		}});
898
899	<	t.start();
900	<	Thread.sleep(SHORT_DELAY_MS);
899	>	await(locked);
900	>	lock.lock();
901	>	lock.unlock();
902		t.interrupt();
903	<	t.join(SHORT_DELAY_MS);
904	<	assertFalse(t.isAlive());
903	>	long timeoutMillis = 10;
904	>	assertThreadStaysAlive(t, timeoutMillis);
905	>	lock.lock();
906	>	c.signal();
907	>	lock.unlock();
908	>	awaitTermination(t);
909		}
910
911		/**
912	<	* awaitNanos is interruptible
912	>	* await/awaitNanos/awaitUntil is interruptible
913		*/
914	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
915	<	final ReentrantLock lock = new ReentrantLock();
914	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
915	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
916	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
917	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
918	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
919	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
920	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
921	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
922	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
923	>	final PublicReentrantLock lock =
924	>	new PublicReentrantLock(fair);
925		final Condition c = lock.newCondition();
926	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
926	>	final CountDownLatch locked = new CountDownLatch(1);
927	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
928		public void realRun() throws InterruptedException {
929		lock.lock();
930	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
930	>	assertLockedByMoi(lock);
931	>	assertHasNoWaiters(lock, c);
932	>	locked.countDown();
933	>	try {
934	>	await(c, awaitMethod);
935	>	} finally {
936	>	assertLockedByMoi(lock);
937	>	assertHasNoWaiters(lock, c);
938	>	lock.unlock();
939	>	assertFalse(Thread.interrupted());
940	>	}
941		}});
942
943	<	t.start();
944	<	Thread.sleep(SHORT_DELAY_MS);
943	>	await(locked);
944	>	assertHasWaiters(lock, c, t);
945		t.interrupt();
946	<	t.join(SHORT_DELAY_MS);
947	<	assertFalse(t.isAlive());
946	>	awaitTermination(t);
947	>	assertNotLocked(lock);
948		}
949
950		/**
951	<	* awaitUntil is interruptible
951	>	* signalAll wakes up all threads
952		*/
953	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
954	<	final ReentrantLock lock = new ReentrantLock();
953	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
954	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
955	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
956	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
957	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
958	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
959	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
960	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
961	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
962	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
963		final Condition c = lock.newCondition();
964	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
964	>	final CountDownLatch locked = new CountDownLatch(2);
965	>	class Awaiter extends CheckedRunnable {
966		public void realRun() throws InterruptedException {
967		lock.lock();
968	<	java.util.Date d = new java.util.Date();
969	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
970	<	}});
968	>	locked.countDown();
969	>	await(c, awaitMethod);
970	>	lock.unlock();
971	>	}
972	>	}
973
974	<	t.start();
975	<	Thread.sleep(SHORT_DELAY_MS);
976	<	t.interrupt();
977	<	t.join(SHORT_DELAY_MS);
978	<	assertFalse(t.isAlive());
974	>	Thread t1 = newStartedThread(new Awaiter());
975	>	Thread t2 = newStartedThread(new Awaiter());
976	>
977	>	await(locked);
978	>	lock.lock();
979	>	assertHasWaiters(lock, c, t1, t2);
980	>	c.signalAll();
981	>	assertHasNoWaiters(lock, c);
982	>	lock.unlock();
983	>	awaitTermination(t1);
984	>	awaitTermination(t2);
985		}
986
987		/**
988	<	* signalAll wakes up all threads
988	>	* signal wakes up waiting threads in FIFO order.
989		*/
990	<	public void testSignalAll() throws InterruptedException {
991	<	final ReentrantLock lock = new ReentrantLock();
990	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
991	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
992	>	public void testSignalWakesFifo(boolean fair) {
993	>	final PublicReentrantLock lock =
994	>	new PublicReentrantLock(fair);
995		final Condition c = lock.newCondition();
996	<	Thread t1 = new Thread(new CheckedRunnable() {
996	>	final CountDownLatch locked1 = new CountDownLatch(1);
997	>	final CountDownLatch locked2 = new CountDownLatch(1);
998	>	Thread t1 = newStartedThread(new CheckedRunnable() {
999		public void realRun() throws InterruptedException {
1000		lock.lock();
1001	+	locked1.countDown();
1002		c.await();
1003		lock.unlock();
1004		}});
1005
1006	<	Thread t2 = new Thread(new CheckedRunnable() {
1006	>	await(locked1);
1007	>
1008	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1009		public void realRun() throws InterruptedException {
1010		lock.lock();
1011	+	locked2.countDown();
1012		c.await();
1013		lock.unlock();
1014		}});
1015
1016	<	t1.start();
1017	<	t2.start();
829	<	Thread.sleep(SHORT_DELAY_MS);
1016	>	await(locked2);
1017	>
1018		lock.lock();
1019	<	c.signalAll();
1019	>	assertHasWaiters(lock, c, t1, t2);
1020	>	assertFalse(lock.hasQueuedThreads());
1021	>	c.signal();
1022	>	assertHasWaiters(lock, c, t2);
1023	>	assertTrue(lock.hasQueuedThread(t1));
1024	>	assertFalse(lock.hasQueuedThread(t2));
1025	>	c.signal();
1026	>	assertHasNoWaiters(lock, c);
1027	>	assertTrue(lock.hasQueuedThread(t1));
1028	>	assertTrue(lock.hasQueuedThread(t2));
1029		lock.unlock();
1030	<	t1.join(SHORT_DELAY_MS);
1031	<	t2.join(SHORT_DELAY_MS);
835	<	assertFalse(t1.isAlive());
836	<	assertFalse(t2.isAlive());
1030	>	awaitTermination(t1);
1031	>	awaitTermination(t2);
1032		}
1033
1034		/**
1035		* await after multiple reentrant locking preserves lock count
1036		*/
1037	<	public void testAwaitLockCount() throws InterruptedException {
1038	<	final ReentrantLock lock = new ReentrantLock();
1037	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1038	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1039	>	public void testAwaitLockCount(boolean fair) {
1040	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1041		final Condition c = lock.newCondition();
1042	<	Thread t1 = new Thread(new CheckedRunnable() {
1042	>	final CountDownLatch locked = new CountDownLatch(2);
1043	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1044		public void realRun() throws InterruptedException {
1045		lock.lock();
1046	<	threadAssertEquals(1, lock.getHoldCount());
1046	>	assertLockedByMoi(lock);
1047	>	assertEquals(1, lock.getHoldCount());
1048	>	locked.countDown();
1049		c.await();
1050	<	threadAssertEquals(1, lock.getHoldCount());
1050	>	assertLockedByMoi(lock);
1051	>	assertEquals(1, lock.getHoldCount());
1052		lock.unlock();
1053		}});
1054
1055	<	Thread t2 = new Thread(new CheckedRunnable() {
1055	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1056		public void realRun() throws InterruptedException {
1057		lock.lock();
1058		lock.lock();
1059	<	threadAssertEquals(2, lock.getHoldCount());
1059	>	assertLockedByMoi(lock);
1060	>	assertEquals(2, lock.getHoldCount());
1061	>	locked.countDown();
1062		c.await();
1063	<	threadAssertEquals(2, lock.getHoldCount());
1063	>	assertLockedByMoi(lock);
1064	>	assertEquals(2, lock.getHoldCount());
1065		lock.unlock();
1066		lock.unlock();
1067		}});
1068
1069	<	t1.start();
866	<	t2.start();
867	<	Thread.sleep(SHORT_DELAY_MS);
1069	>	await(locked);
1070		lock.lock();
1071	+	assertHasWaiters(lock, c, t1, t2);
1072	+	assertEquals(1, lock.getHoldCount());
1073		c.signalAll();
1074	+	assertHasNoWaiters(lock, c);
1075		lock.unlock();
1076	<	t1.join(SHORT_DELAY_MS);
1077	<	t2.join(SHORT_DELAY_MS);
873	<	assertFalse(t1.isAlive());
874	<	assertFalse(t2.isAlive());
1076	>	awaitTermination(t1);
1077	>	awaitTermination(t2);
1078		}
1079
1080		/**
1081		* A serialized lock deserializes as unlocked
1082		*/
1083	<	public void testSerialization() throws Exception {
1084	<	ReentrantLock l = new ReentrantLock();
1085	<	l.lock();
1086	<	l.unlock();
1087	<
1088	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1089	<	ObjectOutputStream out =
1090	<	new ObjectOutputStream(new BufferedOutputStream(bout));
1091	<	out.writeObject(l);
1092	<	out.close();
1093	<
1094	<	ByteArrayInputStream bin =
1095	<	new ByteArrayInputStream(bout.toByteArray());
1096	<	ObjectInputStream in =
1097	<	new ObjectInputStream(new BufferedInputStream(bin));
1098	<	ReentrantLock r = (ReentrantLock) in.readObject();
1099	<	r.lock();
1100	<	r.unlock();
1083	>	public void testSerialization()      { testSerialization(false); }
1084	>	public void testSerialization_fair() { testSerialization(true); }
1085	>	public void testSerialization(boolean fair) {
1086	>	ReentrantLock lock = new ReentrantLock(fair);
1087	>	lock.lock();
1088	>
1089	>	ReentrantLock clone = serialClone(lock);
1090	>	assertEquals(lock.isFair(), clone.isFair());
1091	>	assertTrue(lock.isLocked());
1092	>	assertFalse(clone.isLocked());
1093	>	assertEquals(1, lock.getHoldCount());
1094	>	assertEquals(0, clone.getHoldCount());
1095	>	clone.lock();
1096	>	clone.lock();
1097	>	assertTrue(clone.isLocked());
1098	>	assertEquals(2, clone.getHoldCount());
1099	>	assertEquals(1, lock.getHoldCount());
1100	>	clone.unlock();
1101	>	clone.unlock();
1102	>	assertTrue(lock.isLocked());
1103	>	assertFalse(clone.isLocked());
1104		}
1105
1106		/**
1107		* toString indicates current lock state
1108		*/
1109	<	public void testToString() {
1110	<	ReentrantLock lock = new ReentrantLock();
1109	>	public void testToString()      { testToString(false); }
1110	>	public void testToString_fair() { testToString(true); }
1111	>	public void testToString(boolean fair) {
1112	>	ReentrantLock lock = new ReentrantLock(fair);
1113		String us = lock.toString();
1114		assertTrue(us.indexOf("Unlocked") >= 0);
1115		lock.lock();
1116		String ls = lock.toString();
1117		assertTrue(ls.indexOf("Locked") >= 0);
1118		}
911	–
1119		}

Diff Legend

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