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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 1.54 by jsr166, Wed Dec 31 19:05:43 2014 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		*/
8
9	–	import junit.framework.*;
10	–	import java.util.concurrent.locks.*;
11	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.util.*;
11	<	import java.io.*;
10	>
11	>	import java.util.Arrays;
12	>	import java.util.Collection;
13	>	import java.util.HashSet;
14	>	import java.util.concurrent.CountDownLatch;
15	>	import java.util.concurrent.CyclicBarrier;
16	>	import java.util.concurrent.locks.Condition;
17	>	import java.util.concurrent.locks.ReentrantLock;
18	>
19	>	import junit.framework.AssertionFailedError;
20	>	import junit.framework.Test;
21	>	import junit.framework.TestSuite;
22
23		public class ReentrantLockTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run (suite());
25	>	junit.textui.TestRunner.run(suite());
26		}
27		public static Test suite() {
28		return new TestSuite(ReentrantLockTest.class);
#	Line 32 | Line 39 | public class ReentrantLockTest extends J
39		}
40		}
41
35	–
42		/**
43		* A runnable calling lockInterruptibly that expects to be
44		* interrupted
#	Line 50 | Line 56 | public class ReentrantLockTest extends J
56		*/
57		static class PublicReentrantLock extends ReentrantLock {
58		PublicReentrantLock() { super(); }
59	+	PublicReentrantLock(boolean fair) { super(fair); }
60	+	public Thread getOwner() {
61	+	return super.getOwner();
62	+	}
63		public Collection<Thread> getQueuedThreads() {
64		return super.getQueuedThreads();
65		}
66		public Collection<Thread> getWaitingThreads(Condition c) {
67		return super.getWaitingThreads(c);
68		}
69	+	}
70
71	+	/**
72	+	* Releases write lock, checking that it had a hold count of 1.
73	+	*/
74	+	void releaseLock(PublicReentrantLock lock) {
75	+	assertLockedByMoi(lock);
76	+	lock.unlock();
77	+	assertFalse(lock.isHeldByCurrentThread());
78	+	assertNotLocked(lock);
79	+	}
80
81	+	/**
82	+	* Spin-waits until lock.hasQueuedThread(t) becomes true.
83	+	*/
84	+	void waitForQueuedThread(PublicReentrantLock lock, Thread t) {
85	+	long startTime = System.nanoTime();
86	+	while (!lock.hasQueuedThread(t)) {
87	+	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
88	+	throw new AssertionFailedError("timed out");
89	+	Thread.yield();
90	+	}
91	+	assertTrue(t.isAlive());
92	+	assertNotSame(t, lock.getOwner());
93		}
94
95		/**
96	<	* Constructor sets given fairness
96	>	* Checks that lock is not locked.
97		*/
98	<	public void testConstructor() {
99	<	assertFalse(new ReentrantLock().isFair());
100	<	assertFalse(new ReentrantLock(false).isFair());
101	<	assertTrue(new ReentrantLock(true).isFair());
98	>	void assertNotLocked(PublicReentrantLock lock) {
99	>	assertFalse(lock.isLocked());
100	>	assertFalse(lock.isHeldByCurrentThread());
101	>	assertNull(lock.getOwner());
102	>	assertEquals(0, lock.getHoldCount());
103		}
104
105		/**
106	<	* locking an unlocked lock succeeds
106	>	* Checks that lock is locked by the given thread.
107	>	*/
108	>	void assertLockedBy(PublicReentrantLock lock, Thread t) {
109	>	assertTrue(lock.isLocked());
110	>	assertSame(t, lock.getOwner());
111	>	assertEquals(t == Thread.currentThread(),
112	>	lock.isHeldByCurrentThread());
113	>	assertEquals(t == Thread.currentThread(),
114	>	lock.getHoldCount() > 0);
115	>	}
116	>
117	>	/**
118	>	* Checks that lock is locked by the current thread.
119	>	*/
120	>	void assertLockedByMoi(PublicReentrantLock lock) {
121	>	assertLockedBy(lock, Thread.currentThread());
122	>	}
123	>
124	>	/**
125	>	* Checks that condition c has no waiters.
126	>	*/
127	>	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
128	>	assertHasWaiters(lock, c, new Thread[] {});
129	>	}
130	>
131	>	/**
132	>	* Checks that condition c has exactly the given waiter threads.
133	>	*/
134	>	void assertHasWaiters(PublicReentrantLock lock, Condition c,
135	>	Thread... threads) {
136	>	lock.lock();
137	>	assertEquals(threads.length > 0, lock.hasWaiters(c));
138	>	assertEquals(threads.length, lock.getWaitQueueLength(c));
139	>	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
140	>	assertEquals(threads.length, lock.getWaitingThreads(c).size());
141	>	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
142	>	new HashSet<Thread>(Arrays.asList(threads)));
143	>	lock.unlock();
144	>	}
145	>
146	>	enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }
147	>
148	>	/**
149	>	* Awaits condition using the specified AwaitMethod.
150		*/
151	<	public void testLock() {
152	<	ReentrantLock rl = new ReentrantLock();
153	<	rl.lock();
154	<	assertTrue(rl.isLocked());
155	<	rl.unlock();
156	<	assertFalse(rl.isLocked());
151	>	void await(Condition c, AwaitMethod awaitMethod)
152	>	throws InterruptedException {
153	>	long timeoutMillis = 2 * LONG_DELAY_MS;
154	>	switch (awaitMethod) {
155	>	case await:
156	>	c.await();
157	>	break;
158	>	case awaitTimed:
159	>	assertTrue(c.await(timeoutMillis, MILLISECONDS));
160	>	break;
161	>	case awaitNanos:
162	>	long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis);
163	>	long nanosRemaining = c.awaitNanos(nanosTimeout);
164	>	assertTrue(nanosRemaining > 0);
165	>	break;
166	>	case awaitUntil:
167	>	assertTrue(c.awaitUntil(delayedDate(timeoutMillis)));
168	>	break;
169	>	}
170		}
171
172		/**
173	<	* locking an unlocked fair lock succeeds
174	<	*/
175	<	public void testFairLock() {
176	<	ReentrantLock rl = new ReentrantLock(true);
177	<	rl.lock();
178	<	assertTrue(rl.isLocked());
179	<	rl.unlock();
173	>	* Constructor sets given fairness, and is in unlocked state
174	>	*/
175	>	public void testConstructor() {
176	>	PublicReentrantLock lock;
177	>
178	>	lock = new PublicReentrantLock();
179	>	assertFalse(lock.isFair());
180	>	assertNotLocked(lock);
181	>
182	>	lock = new PublicReentrantLock(true);
183	>	assertTrue(lock.isFair());
184	>	assertNotLocked(lock);
185	>
186	>	lock = new PublicReentrantLock(false);
187	>	assertFalse(lock.isFair());
188	>	assertNotLocked(lock);
189	>	}
190	>
191	>	/**
192	>	* locking an unlocked lock succeeds
193	>	*/
194	>	public void testLock()      { testLock(false); }
195	>	public void testLock_fair() { testLock(true); }
196	>	public void testLock(boolean fair) {
197	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
198	>	lock.lock();
199	>	assertLockedByMoi(lock);
200	>	releaseLock(lock);
201		}
202
203		/**
204		* Unlocking an unlocked lock throws IllegalMonitorStateException
205		*/
206	<	public void testUnlock_IllegalMonitorStateException() {
207	<	ReentrantLock rl = new ReentrantLock();
206	>	public void testUnlock_IMSE()      { testUnlock_IMSE(false); }
207	>	public void testUnlock_IMSE_fair() { testUnlock_IMSE(true); }
208	>	public void testUnlock_IMSE(boolean fair) {
209	>	ReentrantLock lock = new ReentrantLock(fair);
210		try {
211	<	rl.unlock();
211	>	lock.unlock();
212		shouldThrow();
213		} catch (IllegalMonitorStateException success) {}
214		}
#	Line 104 | Line 216 | public class ReentrantLockTest extends J
216		/**
217		* tryLock on an unlocked lock succeeds
218		*/
219	<	public void testTryLock() {
220	<	ReentrantLock rl = new ReentrantLock();
221	<	assertTrue(rl.tryLock());
222	<	assertTrue(rl.isLocked());
223	<	rl.unlock();
219	>	public void testTryLock()      { testTryLock(false); }
220	>	public void testTryLock_fair() { testTryLock(true); }
221	>	public void testTryLock(boolean fair) {
222	>	PublicReentrantLock lock = new PublicReentrantLock(fair);
223	>	assertTrue(lock.tryLock());
224	>	assertLockedByMoi(lock);
225	>	assertTrue(lock.tryLock());
226	>	assertLockedByMoi(lock);
227	>	lock.unlock();
228	>	releaseLock(lock);
229		}
230
114	–
231		/**
232		* hasQueuedThreads reports whether there are waiting threads
233		*/
234	<	public void testhasQueuedThreads() throws InterruptedException {
235	<	final ReentrantLock lock = new ReentrantLock();
234	>	public void testHasQueuedThreads()      { testHasQueuedThreads(false); }
235	>	public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); }
236	>	public void testHasQueuedThreads(boolean fair) {
237	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
238		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
239		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
240		assertFalse(lock.hasQueuedThreads());
241		lock.lock();
242	+	assertFalse(lock.hasQueuedThreads());
243		t1.start();
244	<	Thread.sleep(SHORT_DELAY_MS);
244	>	waitForQueuedThread(lock, t1);
245		assertTrue(lock.hasQueuedThreads());
246		t2.start();
247	<	Thread.sleep(SHORT_DELAY_MS);
247	>	waitForQueuedThread(lock, t2);
248		assertTrue(lock.hasQueuedThreads());
249		t1.interrupt();
250	<	Thread.sleep(SHORT_DELAY_MS);
250	>	awaitTermination(t1);
251		assertTrue(lock.hasQueuedThreads());
252		lock.unlock();
253	<	Thread.sleep(SHORT_DELAY_MS);
253	>	awaitTermination(t2);
254		assertFalse(lock.hasQueuedThreads());
136	–	t1.join();
137	–	t2.join();
255		}
256
257		/**
258		* getQueueLength reports number of waiting threads
259		*/
260	<	public void testGetQueueLength() throws InterruptedException {
261	<	final ReentrantLock lock = new ReentrantLock();
260	>	public void testGetQueueLength()      { testGetQueueLength(false); }
261	>	public void testGetQueueLength_fair() { testGetQueueLength(true); }
262	>	public void testGetQueueLength(boolean fair) {
263	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
264		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
265		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
266		assertEquals(0, lock.getQueueLength());
267		lock.lock();
268		t1.start();
269	<	Thread.sleep(SHORT_DELAY_MS);
269	>	waitForQueuedThread(lock, t1);
270		assertEquals(1, lock.getQueueLength());
271		t2.start();
272	<	Thread.sleep(SHORT_DELAY_MS);
272	>	waitForQueuedThread(lock, t2);
273		assertEquals(2, lock.getQueueLength());
274		t1.interrupt();
275	<	Thread.sleep(SHORT_DELAY_MS);
275	>	awaitTermination(t1);
276		assertEquals(1, lock.getQueueLength());
277		lock.unlock();
278	<	Thread.sleep(SHORT_DELAY_MS);
278	>	awaitTermination(t2);
279		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();
280		}
281
282		/**
283		* hasQueuedThread(null) throws NPE
284		*/
285	<	public void testHasQueuedThreadNPE() {
286	<	final ReentrantLock sync = new ReentrantLock();
285	>	public void testHasQueuedThreadNPE()      { testHasQueuedThreadNPE(false); }
286	>	public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); }
287	>	public void testHasQueuedThreadNPE(boolean fair) {
288	>	final ReentrantLock lock = new ReentrantLock(fair);
289		try {
290	<	sync.hasQueuedThread(null);
290	>	lock.hasQueuedThread(null);
291		shouldThrow();
292		} catch (NullPointerException success) {}
293		}
294
295		/**
296	<	* hasQueuedThread reports whether a thread is queued.
296	>	* hasQueuedThread reports whether a thread is queued
297		*/
298	<	public void testHasQueuedThread() throws InterruptedException {
299	<	final ReentrantLock sync = new ReentrantLock();
300	<	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
301	<	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
302	<	assertFalse(sync.hasQueuedThread(t1));
303	<	assertFalse(sync.hasQueuedThread(t2));
304	<	sync.lock();
298	>	public void testHasQueuedThread()      { testHasQueuedThread(false); }
299	>	public void testHasQueuedThread_fair() { testHasQueuedThread(true); }
300	>	public void testHasQueuedThread(boolean fair) {
301	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
302	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
303	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
304	>	assertFalse(lock.hasQueuedThread(t1));
305	>	assertFalse(lock.hasQueuedThread(t2));
306	>	lock.lock();
307		t1.start();
308	<	Thread.sleep(SHORT_DELAY_MS);
309	<	assertTrue(sync.hasQueuedThread(t1));
308	>	waitForQueuedThread(lock, t1);
309	>	assertTrue(lock.hasQueuedThread(t1));
310	>	assertFalse(lock.hasQueuedThread(t2));
311		t2.start();
312	<	Thread.sleep(SHORT_DELAY_MS);
313	<	assertTrue(sync.hasQueuedThread(t1));
314	<	assertTrue(sync.hasQueuedThread(t2));
312	>	waitForQueuedThread(lock, t2);
313	>	assertTrue(lock.hasQueuedThread(t1));
314	>	assertTrue(lock.hasQueuedThread(t2));
315		t1.interrupt();
316	<	Thread.sleep(SHORT_DELAY_MS);
317	<	assertFalse(sync.hasQueuedThread(t1));
318	<	assertTrue(sync.hasQueuedThread(t2));
319	<	sync.unlock();
320	<	Thread.sleep(SHORT_DELAY_MS);
321	<	assertFalse(sync.hasQueuedThread(t1));
322	<	Thread.sleep(SHORT_DELAY_MS);
226	<	assertFalse(sync.hasQueuedThread(t2));
227	<	t1.join();
228	<	t2.join();
316	>	awaitTermination(t1);
317	>	assertFalse(lock.hasQueuedThread(t1));
318	>	assertTrue(lock.hasQueuedThread(t2));
319	>	lock.unlock();
320	>	awaitTermination(t2);
321	>	assertFalse(lock.hasQueuedThread(t1));
322	>	assertFalse(lock.hasQueuedThread(t2));
323		}
324
231	–
325		/**
326		* getQueuedThreads includes waiting threads
327		*/
328	<	public void testGetQueuedThreads() throws InterruptedException {
329	<	final PublicReentrantLock lock = new PublicReentrantLock();
328	>	public void testGetQueuedThreads()      { testGetQueuedThreads(false); }
329	>	public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); }
330	>	public void testGetQueuedThreads(boolean fair) {
331	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
332		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
333		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
334		assertTrue(lock.getQueuedThreads().isEmpty());
335		lock.lock();
336		assertTrue(lock.getQueuedThreads().isEmpty());
337		t1.start();
338	<	Thread.sleep(SHORT_DELAY_MS);
338	>	waitForQueuedThread(lock, t1);
339	>	assertEquals(1, lock.getQueuedThreads().size());
340		assertTrue(lock.getQueuedThreads().contains(t1));
341		t2.start();
342	<	Thread.sleep(SHORT_DELAY_MS);
342	>	waitForQueuedThread(lock, t2);
343	>	assertEquals(2, lock.getQueuedThreads().size());
344		assertTrue(lock.getQueuedThreads().contains(t1));
345		assertTrue(lock.getQueuedThreads().contains(t2));
346		t1.interrupt();
347	<	Thread.sleep(SHORT_DELAY_MS);
347	>	awaitTermination(t1);
348		assertFalse(lock.getQueuedThreads().contains(t1));
349		assertTrue(lock.getQueuedThreads().contains(t2));
350	+	assertEquals(1, lock.getQueuedThreads().size());
351		lock.unlock();
352	<	Thread.sleep(SHORT_DELAY_MS);
352	>	awaitTermination(t2);
353		assertTrue(lock.getQueuedThreads().isEmpty());
256	–	t1.join();
257	–	t2.join();
354		}
355
260	–
356		/**
357	<	* timed tryLock is interruptible.
357	>	* timed tryLock is interruptible
358		*/
359	<	public void testInterruptedException2() throws InterruptedException {
360	<	final ReentrantLock lock = new ReentrantLock();
359	>	public void testTryLock_Interruptible()      { testTryLock_Interruptible(false); }
360	>	public void testTryLock_Interruptible_fair() { testTryLock_Interruptible(true); }
361	>	public void testTryLock_Interruptible(boolean fair) {
362	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
363		lock.lock();
364	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
364	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
365		public void realRun() throws InterruptedException {
366	<	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
366	>	lock.tryLock(2 * LONG_DELAY_MS, MILLISECONDS);
367		}});
368
369	<	t.start();
369	>	waitForQueuedThread(lock, t);
370		t.interrupt();
371	<	t.join();
371	>	awaitTermination(t);
372	>	releaseLock(lock);
373		}
374
277	–
375		/**
376	<	* TryLock on a locked lock fails
376	>	* tryLock on a locked lock fails
377		*/
378	<	public void testTryLockWhenLocked() throws InterruptedException {
379	<	final ReentrantLock lock = new ReentrantLock();
378	>	public void testTryLockWhenLocked()      { testTryLockWhenLocked(false); }
379	>	public void testTryLockWhenLocked_fair() { testTryLockWhenLocked(true); }
380	>	public void testTryLockWhenLocked(boolean fair) {
381	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
382		lock.lock();
383	<	Thread t = new Thread(new CheckedRunnable() {
383	>	Thread t = newStartedThread(new CheckedRunnable() {
384		public void realRun() {
385	<	threadAssertFalse(lock.tryLock());
385	>	assertFalse(lock.tryLock());
386		}});
387
388	<	t.start();
389	<	t.join();
291	<	lock.unlock();
388	>	awaitTermination(t);
389	>	releaseLock(lock);
390		}
391
392		/**
393		* Timed tryLock on a locked lock times out
394		*/
395	<	public void testTryLock_Timeout() throws InterruptedException {
396	<	final ReentrantLock lock = new ReentrantLock();
395	>	public void testTryLock_Timeout()      { testTryLock_Timeout(false); }
396	>	public void testTryLock_Timeout_fair() { testTryLock_Timeout(true); }
397	>	public void testTryLock_Timeout(boolean fair) {
398	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
399		lock.lock();
400	<	Thread t = new Thread(new CheckedRunnable() {
400	>	Thread t = newStartedThread(new CheckedRunnable() {
401		public void realRun() throws InterruptedException {
402	<	threadAssertFalse(lock.tryLock(1, MILLISECONDS));
402	>	long startTime = System.nanoTime();
403	>	long timeoutMillis = 10;
404	>	assertFalse(lock.tryLock(timeoutMillis, MILLISECONDS));
405	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
406		}});
407
408	<	t.start();
409	<	t.join();
307	<	lock.unlock();
408	>	awaitTermination(t);
409	>	releaseLock(lock);
410		}
411
412		/**
413		* getHoldCount returns number of recursive holds
414		*/
415	<	public void testGetHoldCount() {
416	<	ReentrantLock lock = new ReentrantLock();
415	>	public void testGetHoldCount()      { testGetHoldCount(false); }
416	>	public void testGetHoldCount_fair() { testGetHoldCount(true); }
417	>	public void testGetHoldCount(boolean fair) {
418	>	ReentrantLock lock = new ReentrantLock(fair);
419		for (int i = 1; i <= SIZE; i++) {
420		lock.lock();
421		assertEquals(i, lock.getHoldCount());
#	Line 322 | Line 426 | public class ReentrantLockTest extends J
426		}
427		}
428
325	–
429		/**
430		* isLocked is true when locked and false when not
431		*/
432	<	public void testIsLocked() throws InterruptedException {
433	<	final ReentrantLock lock = new ReentrantLock();
434	<	lock.lock();
435	<	assertTrue(lock.isLocked());
436	<	lock.unlock();
437	<	assertFalse(lock.isLocked());
438	<	Thread t = new Thread(new CheckedRunnable() {
439	<	public void realRun() throws InterruptedException {
440	<	lock.lock();
441	<	Thread.sleep(SMALL_DELAY_MS);
442	<	lock.unlock();
443	<	}});
444	<
445	<	t.start();
446	<	Thread.sleep(SHORT_DELAY_MS);
447	<	assertTrue(lock.isLocked());
448	<	t.join();
449	<	assertFalse(lock.isLocked());
450	<	}
451	<
452	<
453	<	/**
454	<	* lockInterruptibly is interruptible.
455	<	*/
456	<	public void testLockInterruptibly1() throws InterruptedException {
457	<	final ReentrantLock lock = new ReentrantLock();
458	<	lock.lock();
459	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
460	<	t.start();
461	<	Thread.sleep(SHORT_DELAY_MS);
462	<	t.interrupt();
463	<	Thread.sleep(SHORT_DELAY_MS);
361	<	lock.unlock();
362	<	t.join();
432	>	public void testIsLocked()      { testIsLocked(false); }
433	>	public void testIsLocked_fair() { testIsLocked(true); }
434	>	public void testIsLocked(boolean fair) {
435	>	try {
436	>	final ReentrantLock lock = new ReentrantLock(fair);
437	>	assertFalse(lock.isLocked());
438	>	lock.lock();
439	>	assertTrue(lock.isLocked());
440	>	lock.lock();
441	>	assertTrue(lock.isLocked());
442	>	lock.unlock();
443	>	assertTrue(lock.isLocked());
444	>	lock.unlock();
445	>	assertFalse(lock.isLocked());
446	>	final CyclicBarrier barrier = new CyclicBarrier(2);
447	>	Thread t = newStartedThread(new CheckedRunnable() {
448	>	public void realRun() throws Exception {
449	>	lock.lock();
450	>	assertTrue(lock.isLocked());
451	>	barrier.await();
452	>	barrier.await();
453	>	lock.unlock();
454	>	}});
455	>
456	>	barrier.await();
457	>	assertTrue(lock.isLocked());
458	>	barrier.await();
459	>	awaitTermination(t);
460	>	assertFalse(lock.isLocked());
461	>	} catch (Exception e) {
462	>	threadUnexpectedException(e);
463	>	}
464		}
465
466		/**
467		* lockInterruptibly succeeds when unlocked, else is interruptible
468		*/
469	<	public void testLockInterruptibly2() throws InterruptedException {
470	<	final ReentrantLock lock = new ReentrantLock();
471	<	lock.lockInterruptibly();
472	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
473	<	t.start();
469	>	public void testLockInterruptibly()      { testLockInterruptibly(false); }
470	>	public void testLockInterruptibly_fair() { testLockInterruptibly(true); }
471	>	public void testLockInterruptibly(boolean fair) {
472	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
473	>	try {
474	>	lock.lockInterruptibly();
475	>	} catch (InterruptedException ie) {
476	>	threadUnexpectedException(ie);
477	>	}
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	<	t.join();
484	>	awaitTermination(t);
485	>	releaseLock(lock);
486		}
487
488		/**
489		* Calling await without holding lock throws IllegalMonitorStateException
490		*/
491	<	public void testAwait_IllegalMonitor() throws InterruptedException {
492	<	final ReentrantLock lock = new ReentrantLock();
493	<	final Condition c = lock.newCondition();
494	<	try {
495	<	c.await();
496	<	shouldThrow();
497	<	} catch (IllegalMonitorStateException success) {}
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	>	for (AwaitMethod awaitMethod : AwaitMethod.values()) {
497	>	long startTime = System.nanoTime();
498	>	try {
499	>	await(c, awaitMethod);
500	>	shouldThrow();
501	>	} catch (IllegalMonitorStateException success) {
502	>	} catch (InterruptedException e) { threadUnexpectedException(e); }
503	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
504	>	}
505		}
506
507		/**
508		* Calling signal without holding lock throws IllegalMonitorStateException
509		*/
510	<	public void testSignal_IllegalMonitor() {
511	<	final ReentrantLock lock = new ReentrantLock();
510	>	public void testSignal_IMSE()      { testSignal_IMSE(false); }
511	>	public void testSignal_IMSE_fair() { testSignal_IMSE(true); }
512	>	public void testSignal_IMSE(boolean fair) {
513	>	final ReentrantLock lock = new ReentrantLock(fair);
514		final Condition c = lock.newCondition();
515		try {
516		c.signal();
#	Line 403 | Line 521 | public class ReentrantLockTest extends J
521		/**
522		* awaitNanos without a signal times out
523		*/
524	<	public void testAwaitNanos_Timeout() throws InterruptedException {
525	<	final ReentrantLock lock = new ReentrantLock();
526	<	final Condition c = lock.newCondition();
527	<	lock.lock();
528	<	long t = c.awaitNanos(100);
529	<	assertTrue(t <= 0);
530	<	lock.unlock();
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	>	try {
528	>	final ReentrantLock lock = new ReentrantLock(fair);
529	>	final Condition c = lock.newCondition();
530	>	lock.lock();
531	>	long startTime = System.nanoTime();
532	>	long timeoutMillis = 10;
533	>	long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis);
534	>	long nanosRemaining = c.awaitNanos(timeoutNanos);
535	>	assertTrue(nanosRemaining <= 0);
536	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
537	>	lock.unlock();
538	>	} catch (InterruptedException e) {
539	>	threadUnexpectedException(e);
540	>	}
541		}
542
543		/**
544	<	*  timed await without a signal times out
544	>	* timed await without a signal times out
545		*/
546	<	public void testAwait_Timeout() throws InterruptedException {
547	<	final ReentrantLock lock = new ReentrantLock();
548	<	final Condition c = lock.newCondition();
549	<	lock.lock();
550	<	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
551	<	lock.unlock();
546	>	public void testAwait_Timeout()      { testAwait_Timeout(false); }
547	>	public void testAwait_Timeout_fair() { testAwait_Timeout(true); }
548	>	public void testAwait_Timeout(boolean fair) {
549	>	try {
550	>	final ReentrantLock lock = new ReentrantLock(fair);
551	>	final Condition c = lock.newCondition();
552	>	lock.lock();
553	>	long startTime = System.nanoTime();
554	>	long timeoutMillis = 10;
555	>	assertFalse(c.await(timeoutMillis, MILLISECONDS));
556	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
557	>	lock.unlock();
558	>	} catch (InterruptedException e) {
559	>	threadUnexpectedException(e);
560	>	}
561		}
562
563		/**
564		* awaitUntil without a signal times out
565		*/
566	<	public void testAwaitUntil_Timeout() throws InterruptedException {
567	<	final ReentrantLock lock = new ReentrantLock();
568	<	final Condition c = lock.newCondition();
569	<	lock.lock();
570	<	java.util.Date d = new java.util.Date();
571	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
572	<	lock.unlock();
566	>	public void testAwaitUntil_Timeout()      { testAwaitUntil_Timeout(false); }
567	>	public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); }
568	>	public void testAwaitUntil_Timeout(boolean fair) {
569	>	try {
570	>	final ReentrantLock lock = new ReentrantLock(fair);
571	>	final Condition c = lock.newCondition();
572	>	lock.lock();
573	>	long startTime = System.nanoTime();
574	>	long timeoutMillis = 10;
575	>	java.util.Date d = new java.util.Date();
576	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis)));
577	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
578	>	lock.unlock();
579	>	} catch (InterruptedException e) {
580	>	threadUnexpectedException(e);
581	>	}
582		}
583
584		/**
585		* await returns when signalled
586		*/
587	<	public void testAwait() throws InterruptedException {
588	<	final ReentrantLock lock = new ReentrantLock();
587	>	public void testAwait()      { testAwait(false); }
588	>	public void testAwait_fair() { testAwait(true); }
589	>	public void testAwait(boolean fair) {
590	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
591		final Condition c = lock.newCondition();
592	<	Thread t = new Thread(new CheckedRunnable() {
592	>	final CountDownLatch locked = new CountDownLatch(1);
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594		public void realRun() throws InterruptedException {
595		lock.lock();
596	+	locked.countDown();
597		c.await();
598		lock.unlock();
599		}});
600
601	<	t.start();
452	<	Thread.sleep(SHORT_DELAY_MS);
601	>	await(locked);
602		lock.lock();
603	+	assertHasWaiters(lock, c, t);
604		c.signal();
605	+	assertHasNoWaiters(lock, c);
606	+	assertTrue(t.isAlive());
607		lock.unlock();
608	<	t.join(SHORT_DELAY_MS);
457	<	assertFalse(t.isAlive());
608	>	awaitTermination(t);
609		}
610
611		/**
612		* hasWaiters throws NPE if null
613		*/
614	<	public void testHasWaitersNPE() {
615	<	final ReentrantLock lock = new ReentrantLock();
614	>	public void testHasWaitersNPE()      { testHasWaitersNPE(false); }
615	>	public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); }
616	>	public void testHasWaitersNPE(boolean fair) {
617	>	final ReentrantLock lock = new ReentrantLock(fair);
618		try {
619		lock.hasWaiters(null);
620		shouldThrow();
#	Line 471 | Line 624 | public class ReentrantLockTest extends J
624		/**
625		* getWaitQueueLength throws NPE if null
626		*/
627	<	public void testGetWaitQueueLengthNPE() {
628	<	final ReentrantLock lock = new ReentrantLock();
627	>	public void testGetWaitQueueLengthNPE()      { testGetWaitQueueLengthNPE(false); }
628	>	public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); }
629	>	public void testGetWaitQueueLengthNPE(boolean fair) {
630	>	final ReentrantLock lock = new ReentrantLock(fair);
631		try {
632		lock.getWaitQueueLength(null);
633		shouldThrow();
634		} catch (NullPointerException success) {}
635		}
636
482	–
637		/**
638		* getWaitingThreads throws NPE if null
639		*/
640	<	public void testGetWaitingThreadsNPE() {
641	<	final PublicReentrantLock lock = new PublicReentrantLock();
640	>	public void testGetWaitingThreadsNPE()      { testGetWaitingThreadsNPE(false); }
641	>	public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); }
642	>	public void testGetWaitingThreadsNPE(boolean fair) {
643	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
644		try {
645		lock.getWaitingThreads(null);
646		shouldThrow();
647		} catch (NullPointerException success) {}
648		}
649
494	–
650		/**
651	<	* hasWaiters throws IAE if not owned
651	>	* hasWaiters throws IllegalArgumentException if not owned
652		*/
653	<	public void testHasWaitersIAE() {
654	<	final ReentrantLock lock = new ReentrantLock();
653	>	public void testHasWaitersIAE()      { testHasWaitersIAE(false); }
654	>	public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); }
655	>	public void testHasWaitersIAE(boolean fair) {
656	>	final ReentrantLock lock = new ReentrantLock(fair);
657		final Condition c = lock.newCondition();
658	<	final ReentrantLock lock2 = new ReentrantLock();
658	>	final ReentrantLock lock2 = new ReentrantLock(fair);
659		try {
660		lock2.hasWaiters(c);
661		shouldThrow();
#	Line 506 | Line 663 | public class ReentrantLockTest extends J
663		}
664
665		/**
666	<	* hasWaiters throws IMSE if not locked
666	>	* hasWaiters throws IllegalMonitorStateException if not locked
667		*/
668	<	public void testHasWaitersIMSE() {
669	<	final ReentrantLock lock = new ReentrantLock();
668	>	public void testHasWaitersIMSE()      { testHasWaitersIMSE(false); }
669	>	public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); }
670	>	public void testHasWaitersIMSE(boolean fair) {
671	>	final ReentrantLock lock = new ReentrantLock(fair);
672		final Condition c = lock.newCondition();
673		try {
674		lock.hasWaiters(c);
#	Line 517 | Line 676 | public class ReentrantLockTest extends J
676		} catch (IllegalMonitorStateException success) {}
677		}
678
520	–
679		/**
680	<	* getWaitQueueLength throws IAE if not owned
680	>	* getWaitQueueLength throws IllegalArgumentException if not owned
681		*/
682	<	public void testGetWaitQueueLengthIAE() {
683	<	final ReentrantLock lock = new ReentrantLock();
682	>	public void testGetWaitQueueLengthIAE()      { testGetWaitQueueLengthIAE(false); }
683	>	public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); }
684	>	public void testGetWaitQueueLengthIAE(boolean fair) {
685	>	final ReentrantLock lock = new ReentrantLock(fair);
686		final Condition c = lock.newCondition();
687	<	final ReentrantLock lock2 = new ReentrantLock();
687	>	final ReentrantLock lock2 = new ReentrantLock(fair);
688		try {
689		lock2.getWaitQueueLength(c);
690		shouldThrow();
#	Line 532 | Line 692 | public class ReentrantLockTest extends J
692		}
693
694		/**
695	<	* getWaitQueueLength throws IMSE if not locked
695	>	* getWaitQueueLength throws IllegalMonitorStateException if not locked
696		*/
697	<	public void testGetWaitQueueLengthIMSE() {
698	<	final ReentrantLock lock = new ReentrantLock();
697	>	public void testGetWaitQueueLengthIMSE()      { testGetWaitQueueLengthIMSE(false); }
698	>	public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); }
699	>	public void testGetWaitQueueLengthIMSE(boolean fair) {
700	>	final ReentrantLock lock = new ReentrantLock(fair);
701		final Condition c = lock.newCondition();
702		try {
703		lock.getWaitQueueLength(c);
#	Line 543 | Line 705 | public class ReentrantLockTest extends J
705		} catch (IllegalMonitorStateException success) {}
706		}
707
546	–
708		/**
709	<	* getWaitingThreads throws IAE if not owned
709	>	* getWaitingThreads throws IllegalArgumentException if not owned
710		*/
711	<	public void testGetWaitingThreadsIAE() {
712	<	final PublicReentrantLock lock = new PublicReentrantLock();
711	>	public void testGetWaitingThreadsIAE()      { testGetWaitingThreadsIAE(false); }
712	>	public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); }
713	>	public void testGetWaitingThreadsIAE(boolean fair) {
714	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
715		final Condition c = lock.newCondition();
716	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
716	>	final PublicReentrantLock lock2 = new PublicReentrantLock(fair);
717		try {
718		lock2.getWaitingThreads(c);
719		shouldThrow();
#	Line 558 | Line 721 | public class ReentrantLockTest extends J
721		}
722
723		/**
724	<	* getWaitingThreads throws IMSE if not locked
724	>	* getWaitingThreads throws IllegalMonitorStateException if not locked
725		*/
726	<	public void testGetWaitingThreadsIMSE() {
727	<	final PublicReentrantLock lock = new PublicReentrantLock();
726	>	public void testGetWaitingThreadsIMSE()      { testGetWaitingThreadsIMSE(false); }
727	>	public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); }
728	>	public void testGetWaitingThreadsIMSE(boolean fair) {
729	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
730		final Condition c = lock.newCondition();
731		try {
732		lock.getWaitingThreads(c);
#	Line 569 | Line 734 | public class ReentrantLockTest extends J
734		} catch (IllegalMonitorStateException success) {}
735		}
736
572	–
737		/**
738		* hasWaiters returns true when a thread is waiting, else false
739		*/
740	<	public void testHasWaiters() throws InterruptedException {
741	<	final ReentrantLock lock = new ReentrantLock();
740	>	public void testHasWaiters()      { testHasWaiters(false); }
741	>	public void testHasWaiters_fair() { testHasWaiters(true); }
742	>	public void testHasWaiters(boolean fair) {
743	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
744		final Condition c = lock.newCondition();
745	<	Thread t = new Thread(new CheckedRunnable() {
745	>	final CountDownLatch pleaseSignal = new CountDownLatch(1);
746	>	Thread t = newStartedThread(new CheckedRunnable() {
747		public void realRun() throws InterruptedException {
748		lock.lock();
749	<	threadAssertFalse(lock.hasWaiters(c));
750	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
749	>	assertHasNoWaiters(lock, c);
750	>	assertFalse(lock.hasWaiters(c));
751	>	pleaseSignal.countDown();
752		c.await();
753	+	assertHasNoWaiters(lock, c);
754	+	assertFalse(lock.hasWaiters(c));
755		lock.unlock();
756		}});
757
758	<	t.start();
589	<	Thread.sleep(SHORT_DELAY_MS);
758	>	await(pleaseSignal);
759		lock.lock();
760	+	assertHasWaiters(lock, c, t);
761		assertTrue(lock.hasWaiters(c));
592	–	assertEquals(1, lock.getWaitQueueLength(c));
762		c.signal();
763	<	lock.unlock();
595	<	Thread.sleep(SHORT_DELAY_MS);
596	<	lock.lock();
763	>	assertHasNoWaiters(lock, c);
764		assertFalse(lock.hasWaiters(c));
598	–	assertEquals(0, lock.getWaitQueueLength(c));
765		lock.unlock();
766	<	t.join(SHORT_DELAY_MS);
767	<	assertFalse(t.isAlive());
766	>	awaitTermination(t);
767	>	assertHasNoWaiters(lock, c);
768		}
769
770		/**
771		* getWaitQueueLength returns number of waiting threads
772		*/
773	<	public void testGetWaitQueueLength() throws InterruptedException {
774	<	final ReentrantLock lock = new ReentrantLock();
773	>	public void testGetWaitQueueLength()      { testGetWaitQueueLength(false); }
774	>	public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); }
775	>	public void testGetWaitQueueLength(boolean fair) {
776	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
777		final Condition c = lock.newCondition();
778	+	final CountDownLatch locked1 = new CountDownLatch(1);
779	+	final CountDownLatch locked2 = new CountDownLatch(1);
780		Thread t1 = new Thread(new CheckedRunnable() {
781		public void realRun() throws InterruptedException {
782		lock.lock();
783	<	threadAssertFalse(lock.hasWaiters(c));
784	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
783	>	assertFalse(lock.hasWaiters(c));
784	>	assertEquals(0, lock.getWaitQueueLength(c));
785	>	locked1.countDown();
786		c.await();
787		lock.unlock();
788		}});
#	Line 619 | Line 790 | public class ReentrantLockTest extends J
790		Thread t2 = new Thread(new CheckedRunnable() {
791		public void realRun() throws InterruptedException {
792		lock.lock();
793	<	threadAssertTrue(lock.hasWaiters(c));
794	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
793	>	assertTrue(lock.hasWaiters(c));
794	>	assertEquals(1, lock.getWaitQueueLength(c));
795	>	locked2.countDown();
796		c.await();
797		lock.unlock();
798		}});
799
800	+	lock.lock();
801	+	assertEquals(0, lock.getWaitQueueLength(c));
802	+	lock.unlock();
803	+
804		t1.start();
805	<	Thread.sleep(SHORT_DELAY_MS);
805	>	await(locked1);
806	>
807	>	lock.lock();
808	>	assertHasWaiters(lock, c, t1);
809	>	assertEquals(1, lock.getWaitQueueLength(c));
810	>	lock.unlock();
811	>
812		t2.start();
813	<	Thread.sleep(SHORT_DELAY_MS);
813	>	await(locked2);
814	>
815		lock.lock();
816	<	assertTrue(lock.hasWaiters(c));
816	>	assertHasWaiters(lock, c, t1, t2);
817		assertEquals(2, lock.getWaitQueueLength(c));
818		c.signalAll();
819	+	assertHasNoWaiters(lock, c);
820		lock.unlock();
821	<	Thread.sleep(SHORT_DELAY_MS);
822	<	lock.lock();
823	<	assertFalse(lock.hasWaiters(c));
824	<	assertEquals(0, lock.getWaitQueueLength(c));
825	<	lock.unlock();
642	<	t1.join(SHORT_DELAY_MS);
643	<	t2.join(SHORT_DELAY_MS);
644	<	assertFalse(t1.isAlive());
645	<	assertFalse(t2.isAlive());
821	>
822	>	awaitTermination(t1);
823	>	awaitTermination(t2);
824	>
825	>	assertHasNoWaiters(lock, c);
826		}
827
828		/**
829		* getWaitingThreads returns only and all waiting threads
830		*/
831	<	public void testGetWaitingThreads() throws InterruptedException {
832	<	final PublicReentrantLock lock = new PublicReentrantLock();
831	>	public void testGetWaitingThreads()      { testGetWaitingThreads(false); }
832	>	public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); }
833	>	public void testGetWaitingThreads(boolean fair) {
834	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
835		final Condition c = lock.newCondition();
836	+	final CountDownLatch locked1 = new CountDownLatch(1);
837	+	final CountDownLatch locked2 = new CountDownLatch(1);
838		Thread t1 = new Thread(new CheckedRunnable() {
839		public void realRun() throws InterruptedException {
840		lock.lock();
841	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
841	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
842	>	locked1.countDown();
843		c.await();
844		lock.unlock();
845		}});
#	Line 662 | Line 847 | public class ReentrantLockTest extends J
847		Thread t2 = new Thread(new CheckedRunnable() {
848		public void realRun() throws InterruptedException {
849		lock.lock();
850	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
850	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
851	>	locked2.countDown();
852		c.await();
853		lock.unlock();
854		}});
#	Line 670 | Line 856 | public class ReentrantLockTest extends J
856		lock.lock();
857		assertTrue(lock.getWaitingThreads(c).isEmpty());
858		lock.unlock();
859	+
860		t1.start();
861	<	Thread.sleep(SHORT_DELAY_MS);
861	>	await(locked1);
862	>
863	>	lock.lock();
864	>	assertHasWaiters(lock, c, t1);
865	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
866	>	assertFalse(lock.getWaitingThreads(c).contains(t2));
867	>	assertEquals(1, lock.getWaitingThreads(c).size());
868	>	lock.unlock();
869	>
870		t2.start();
871	<	Thread.sleep(SHORT_DELAY_MS);
871	>	await(locked2);
872	>
873		lock.lock();
874	<	assertTrue(lock.hasWaiters(c));
874	>	assertHasWaiters(lock, c, t1, t2);
875		assertTrue(lock.getWaitingThreads(c).contains(t1));
876		assertTrue(lock.getWaitingThreads(c).contains(t2));
877	+	assertEquals(2, lock.getWaitingThreads(c).size());
878		c.signalAll();
879	+	assertHasNoWaiters(lock, c);
880		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	–	}
693	–
694	–	/** A helper class for uninterruptible wait tests */
695	–	class UninterruptibleThread extends Thread {
696	–	private ReentrantLock lock;
697	–	private Condition c;
881
882	<	public volatile boolean canAwake = false;
883	<	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	<	}
882	>	awaitTermination(t1);
883	>	awaitTermination(t2);
884
885	<	public synchronized void run() {
709	<	lock.lock();
710	<	lockStarted = true;
711	<
712	<	while (!canAwake) {
713	<	c.awaitUninterruptibly();
714	<	}
715	<
716	<	interrupted = isInterrupted();
717	<	lock.unlock();
718	<	}
885	>	assertHasNoWaiters(lock, c);
886		}
887
888		/**
889	<	* awaitUninterruptibly doesn't abort on interrupt
889	>	* awaitUninterruptibly is uninterruptible
890		*/
891	<	public void testAwaitUninterruptibly() throws InterruptedException {
892	<	final ReentrantLock lock = new ReentrantLock();
891	>	public void testAwaitUninterruptibly()      { testAwaitUninterruptibly(false); }
892	>	public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); }
893	>	public void testAwaitUninterruptibly(boolean fair) {
894	>	final ReentrantLock lock = new ReentrantLock(fair);
895		final Condition c = lock.newCondition();
896	<	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
896	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
897
898	<	thread.start();
898	>	Thread t1 = newStartedThread(new CheckedRunnable() {
899	>	public void realRun() {
900	>	// Interrupt before awaitUninterruptibly
901	>	lock.lock();
902	>	pleaseInterrupt.countDown();
903	>	Thread.currentThread().interrupt();
904	>	c.awaitUninterruptibly();
905	>	assertTrue(Thread.interrupted());
906	>	lock.unlock();
907	>	}});
908
909	<	while (!thread.lockStarted) {
910	<	Thread.sleep(100);
911	<	}
909	>	Thread t2 = newStartedThread(new CheckedRunnable() {
910	>	public void realRun() {
911	>	// Interrupt during awaitUninterruptibly
912	>	lock.lock();
913	>	pleaseInterrupt.countDown();
914	>	c.awaitUninterruptibly();
915	>	assertTrue(Thread.interrupted());
916	>	lock.unlock();
917	>	}});
918
919	+	await(pleaseInterrupt);
920		lock.lock();
921	<	try {
922	<	thread.interrupt();
738	<	thread.canAwake = true;
739	<	c.signal();
740	<	} finally {
741	<	lock.unlock();
742	<	}
921	>	lock.unlock();
922	>	t2.interrupt();
923
924	<	thread.join();
925	<	assertTrue(thread.interrupted);
746	<	assertFalse(thread.isAlive());
747	<	}
924	>	assertThreadStaysAlive(t1);
925	>	assertTrue(t2.isAlive());
926
927	<	/**
928	<	* await is interruptible
929	<	*/
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 {
757	<	lock.lock();
758	<	c.await();
759	<	}});
927	>	lock.lock();
928	>	c.signalAll();
929	>	lock.unlock();
930
931	<	t.start();
932	<	Thread.sleep(SHORT_DELAY_MS);
763	<	t.interrupt();
764	<	t.join(SHORT_DELAY_MS);
765	<	assertFalse(t.isAlive());
931	>	awaitTermination(t1);
932	>	awaitTermination(t2);
933		}
934
935		/**
936	<	* awaitNanos is interruptible
936	>	* await/awaitNanos/awaitUntil is interruptible
937		*/
938	<	public void testAwaitNanos_Interrupt() throws InterruptedException {
939	<	final ReentrantLock lock = new ReentrantLock();
938	>	public void testInterruptible_await()           { testInterruptible(false, AwaitMethod.await); }
939	>	public void testInterruptible_await_fair()      { testInterruptible(true,  AwaitMethod.await); }
940	>	public void testInterruptible_awaitTimed()      { testInterruptible(false, AwaitMethod.awaitTimed); }
941	>	public void testInterruptible_awaitTimed_fair() { testInterruptible(true,  AwaitMethod.awaitTimed); }
942	>	public void testInterruptible_awaitNanos()      { testInterruptible(false, AwaitMethod.awaitNanos); }
943	>	public void testInterruptible_awaitNanos_fair() { testInterruptible(true,  AwaitMethod.awaitNanos); }
944	>	public void testInterruptible_awaitUntil()      { testInterruptible(false, AwaitMethod.awaitUntil); }
945	>	public void testInterruptible_awaitUntil_fair() { testInterruptible(true,  AwaitMethod.awaitUntil); }
946	>	public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) {
947	>	final PublicReentrantLock lock =
948	>	new PublicReentrantLock(fair);
949		final Condition c = lock.newCondition();
950	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
950	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
951	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
952		public void realRun() throws InterruptedException {
953		lock.lock();
954	<	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
954	>	assertLockedByMoi(lock);
955	>	assertHasNoWaiters(lock, c);
956	>	pleaseInterrupt.countDown();
957	>	try {
958	>	await(c, awaitMethod);
959	>	} finally {
960	>	assertLockedByMoi(lock);
961	>	assertHasNoWaiters(lock, c);
962	>	lock.unlock();
963	>	assertFalse(Thread.interrupted());
964	>	}
965		}});
966
967	<	t.start();
968	<	Thread.sleep(SHORT_DELAY_MS);
967	>	await(pleaseInterrupt);
968	>	assertHasWaiters(lock, c, t);
969		t.interrupt();
970	<	t.join(SHORT_DELAY_MS);
971	<	assertFalse(t.isAlive());
970	>	awaitTermination(t);
971	>	assertNotLocked(lock);
972		}
973
974		/**
975	<	* awaitUntil is interruptible
975	>	* signalAll wakes up all threads
976		*/
977	<	public void testAwaitUntil_Interrupt() throws InterruptedException {
978	<	final ReentrantLock lock = new ReentrantLock();
977	>	public void testSignalAll_await()           { testSignalAll(false, AwaitMethod.await); }
978	>	public void testSignalAll_await_fair()      { testSignalAll(true,  AwaitMethod.await); }
979	>	public void testSignalAll_awaitTimed()      { testSignalAll(false, AwaitMethod.awaitTimed); }
980	>	public void testSignalAll_awaitTimed_fair() { testSignalAll(true,  AwaitMethod.awaitTimed); }
981	>	public void testSignalAll_awaitNanos()      { testSignalAll(false, AwaitMethod.awaitNanos); }
982	>	public void testSignalAll_awaitNanos_fair() { testSignalAll(true,  AwaitMethod.awaitNanos); }
983	>	public void testSignalAll_awaitUntil()      { testSignalAll(false, AwaitMethod.awaitUntil); }
984	>	public void testSignalAll_awaitUntil_fair() { testSignalAll(true,  AwaitMethod.awaitUntil); }
985	>	public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) {
986	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
987		final Condition c = lock.newCondition();
988	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
988	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
989	>	class Awaiter extends CheckedRunnable {
990		public void realRun() throws InterruptedException {
991		lock.lock();
992	<	java.util.Date d = new java.util.Date();
993	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
994	<	}});
992	>	pleaseSignal.countDown();
993	>	await(c, awaitMethod);
994	>	lock.unlock();
995	>	}
996	>	}
997
998	<	t.start();
999	<	Thread.sleep(SHORT_DELAY_MS);
1000	<	t.interrupt();
1001	<	t.join(SHORT_DELAY_MS);
1002	<	assertFalse(t.isAlive());
998	>	Thread t1 = newStartedThread(new Awaiter());
999	>	Thread t2 = newStartedThread(new Awaiter());
1000	>
1001	>	await(pleaseSignal);
1002	>	lock.lock();
1003	>	assertHasWaiters(lock, c, t1, t2);
1004	>	c.signalAll();
1005	>	assertHasNoWaiters(lock, c);
1006	>	lock.unlock();
1007	>	awaitTermination(t1);
1008	>	awaitTermination(t2);
1009		}
1010
1011		/**
1012	<	* signalAll wakes up all threads
1012	>	* signal wakes up waiting threads in FIFO order
1013		*/
1014	<	public void testSignalAll() throws InterruptedException {
1015	<	final ReentrantLock lock = new ReentrantLock();
1014	>	public void testSignalWakesFifo()      { testSignalWakesFifo(false); }
1015	>	public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); }
1016	>	public void testSignalWakesFifo(boolean fair) {
1017	>	final PublicReentrantLock lock =
1018	>	new PublicReentrantLock(fair);
1019		final Condition c = lock.newCondition();
1020	<	Thread t1 = new Thread(new CheckedRunnable() {
1020	>	final CountDownLatch locked1 = new CountDownLatch(1);
1021	>	final CountDownLatch locked2 = new CountDownLatch(1);
1022	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1023		public void realRun() throws InterruptedException {
1024		lock.lock();
1025	+	locked1.countDown();
1026		c.await();
1027		lock.unlock();
1028		}});
1029
1030	<	Thread t2 = new Thread(new CheckedRunnable() {
1030	>	await(locked1);
1031	>
1032	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1033		public void realRun() throws InterruptedException {
1034		lock.lock();
1035	+	locked2.countDown();
1036		c.await();
1037		lock.unlock();
1038		}});
1039
1040	<	t1.start();
1041	<	t2.start();
829	<	Thread.sleep(SHORT_DELAY_MS);
1040	>	await(locked2);
1041	>
1042		lock.lock();
1043	<	c.signalAll();
1043	>	assertHasWaiters(lock, c, t1, t2);
1044	>	assertFalse(lock.hasQueuedThreads());
1045	>	c.signal();
1046	>	assertHasWaiters(lock, c, t2);
1047	>	assertTrue(lock.hasQueuedThread(t1));
1048	>	assertFalse(lock.hasQueuedThread(t2));
1049	>	c.signal();
1050	>	assertHasNoWaiters(lock, c);
1051	>	assertTrue(lock.hasQueuedThread(t1));
1052	>	assertTrue(lock.hasQueuedThread(t2));
1053		lock.unlock();
1054	<	t1.join(SHORT_DELAY_MS);
1055	<	t2.join(SHORT_DELAY_MS);
835	<	assertFalse(t1.isAlive());
836	<	assertFalse(t2.isAlive());
1054	>	awaitTermination(t1);
1055	>	awaitTermination(t2);
1056		}
1057
1058		/**
1059		* await after multiple reentrant locking preserves lock count
1060		*/
1061	<	public void testAwaitLockCount() throws InterruptedException {
1062	<	final ReentrantLock lock = new ReentrantLock();
1061	>	public void testAwaitLockCount()      { testAwaitLockCount(false); }
1062	>	public void testAwaitLockCount_fair() { testAwaitLockCount(true); }
1063	>	public void testAwaitLockCount(boolean fair) {
1064	>	final PublicReentrantLock lock = new PublicReentrantLock(fair);
1065		final Condition c = lock.newCondition();
1066	<	Thread t1 = new Thread(new CheckedRunnable() {
1066	>	final CountDownLatch pleaseSignal = new CountDownLatch(2);
1067	>	Thread t1 = newStartedThread(new CheckedRunnable() {
1068		public void realRun() throws InterruptedException {
1069		lock.lock();
1070	<	threadAssertEquals(1, lock.getHoldCount());
1070	>	assertLockedByMoi(lock);
1071	>	assertEquals(1, lock.getHoldCount());
1072	>	pleaseSignal.countDown();
1073		c.await();
1074	<	threadAssertEquals(1, lock.getHoldCount());
1074	>	assertLockedByMoi(lock);
1075	>	assertEquals(1, lock.getHoldCount());
1076		lock.unlock();
1077		}});
1078
1079	<	Thread t2 = new Thread(new CheckedRunnable() {
1079	>	Thread t2 = newStartedThread(new CheckedRunnable() {
1080		public void realRun() throws InterruptedException {
1081		lock.lock();
1082		lock.lock();
1083	<	threadAssertEquals(2, lock.getHoldCount());
1083	>	assertLockedByMoi(lock);
1084	>	assertEquals(2, lock.getHoldCount());
1085	>	pleaseSignal.countDown();
1086		c.await();
1087	<	threadAssertEquals(2, lock.getHoldCount());
1087	>	assertLockedByMoi(lock);
1088	>	assertEquals(2, lock.getHoldCount());
1089		lock.unlock();
1090		lock.unlock();
1091		}});
1092
1093	<	t1.start();
866	<	t2.start();
867	<	Thread.sleep(SHORT_DELAY_MS);
1093	>	await(pleaseSignal);
1094		lock.lock();
1095	+	assertHasWaiters(lock, c, t1, t2);
1096	+	assertEquals(1, lock.getHoldCount());
1097		c.signalAll();
1098	+	assertHasNoWaiters(lock, c);
1099		lock.unlock();
1100	<	t1.join(SHORT_DELAY_MS);
1101	<	t2.join(SHORT_DELAY_MS);
873	<	assertFalse(t1.isAlive());
874	<	assertFalse(t2.isAlive());
1100	>	awaitTermination(t1);
1101	>	awaitTermination(t2);
1102		}
1103
1104		/**
1105		* A serialized lock deserializes as unlocked
1106		*/
1107	<	public void testSerialization() throws Exception {
1108	<	ReentrantLock l = new ReentrantLock();
1109	<	l.lock();
1110	<	l.unlock();
1111	<
1112	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1113	<	ObjectOutputStream out =
1114	<	new ObjectOutputStream(new BufferedOutputStream(bout));
1115	<	out.writeObject(l);
1116	<	out.close();
1117	<
1118	<	ByteArrayInputStream bin =
1119	<	new ByteArrayInputStream(bout.toByteArray());
1120	<	ObjectInputStream in =
1121	<	new ObjectInputStream(new BufferedInputStream(bin));
1122	<	ReentrantLock r = (ReentrantLock) in.readObject();
1123	<	r.lock();
1124	<	r.unlock();
1107	>	public void testSerialization()      { testSerialization(false); }
1108	>	public void testSerialization_fair() { testSerialization(true); }
1109	>	public void testSerialization(boolean fair) {
1110	>	ReentrantLock lock = new ReentrantLock(fair);
1111	>	lock.lock();
1112	>
1113	>	ReentrantLock clone = serialClone(lock);
1114	>	assertEquals(lock.isFair(), clone.isFair());
1115	>	assertTrue(lock.isLocked());
1116	>	assertFalse(clone.isLocked());
1117	>	assertEquals(1, lock.getHoldCount());
1118	>	assertEquals(0, clone.getHoldCount());
1119	>	clone.lock();
1120	>	clone.lock();
1121	>	assertTrue(clone.isLocked());
1122	>	assertEquals(2, clone.getHoldCount());
1123	>	assertEquals(1, lock.getHoldCount());
1124	>	clone.unlock();
1125	>	clone.unlock();
1126	>	assertTrue(lock.isLocked());
1127	>	assertFalse(clone.isLocked());
1128		}
1129
1130		/**
1131		* toString indicates current lock state
1132		*/
1133	<	public void testToString() {
1134	<	ReentrantLock lock = new ReentrantLock();
1135	<	String us = lock.toString();
1136	<	assertTrue(us.indexOf("Unlocked") >= 0);
1133	>	public void testToString()      { testToString(false); }
1134	>	public void testToString_fair() { testToString(true); }
1135	>	public void testToString(boolean fair) {
1136	>	ReentrantLock lock = new ReentrantLock(fair);
1137	>	assertTrue(lock.toString().contains("Unlocked"));
1138		lock.lock();
1139	<	String ls = lock.toString();
1140	<	assertTrue(ls.indexOf("Locked") >= 0);
1139	>	assertTrue(lock.toString().contains("Locked"));
1140	>	lock.unlock();
1141	>	assertTrue(lock.toString().contains("Unlocked"));
1142		}
911	–
1143		}

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