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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.3 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import java.util.*;
13		import java.io.*;
14
15	<	public class ReentrantLockTest extends TestCase {
14	<	static int HOLD_COUNT_TEST_LIMIT = 20;
15	<
15	>	public class ReentrantLockTest extends JSR166TestCase {
16		public static void main(String[] args) {
17		junit.textui.TestRunner.run (suite());
18		}
19	–
19		public static Test suite() {
20		return new TestSuite(ReentrantLockTest.class);
21		}
22
23	<	private static long SHORT_DELAY_MS = 100;
24	<	private static long MEDIUM_DELAY_MS = 1000;
26	<	private static long LONG_DELAY_MS = 10000;
27	<
28	<	/*
29	<	* Unlocks an unlocked lock, throws Illegal Monitor State
30	<	*
23	>	/**
24	>	* A runnable calling lockInterruptibly
25		*/
26	<
27	<	public void testIllegalMonitorStateException(){
26	>	class InterruptibleLockRunnable implements Runnable {
27	>	final ReentrantLock lock;
28	>	InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
29	>	public void run() {
30	>	try {
31	>	lock.lockInterruptibly();
32	>	} catch(InterruptedException success){}
33	>	}
34	>	}
35	>
36	>
37	>	/**
38	>	* A runnable calling lockInterruptibly that expects to be
39	>	* interrupted
40	>	*/
41	>	class InterruptedLockRunnable implements Runnable {
42	>	final ReentrantLock lock;
43	>	InterruptedLockRunnable(ReentrantLock l) { lock = l; }
44	>	public void run() {
45	>	try {
46	>	lock.lockInterruptibly();
47	>	threadShouldThrow();
48	>	} catch(InterruptedException success){}
49	>	}
50	>	}
51	>
52	>	/**
53	>	* Subclass to expose protected methods
54	>	*/
55	>	static class PublicReentrantLock extends ReentrantLock {
56	>	PublicReentrantLock() { super(); }
57	>	public Collection<Thread> getQueuedThreads() {
58	>	return super.getQueuedThreads();
59	>	}
60	>	public Collection<Thread> getWaitingThreads(Condition c) {
61	>	return super.getWaitingThreads(c);
62	>	}
63	>
64	>
65	>	}
66	>
67	>	/**
68	>	* Constructor sets given fairness
69	>	*/
70	>	public void testConstructor() {
71	>	ReentrantLock rl = new ReentrantLock();
72	>	assertFalse(rl.isFair());
73	>	ReentrantLock r2 = new ReentrantLock(true);
74	>	assertTrue(r2.isFair());
75	>	}
76	>
77	>	/**
78	>	* locking an unlocked lock succeeds
79	>	*/
80	>	public void testLock() {
81	>	ReentrantLock rl = new ReentrantLock();
82	>	rl.lock();
83	>	assertTrue(rl.isLocked());
84	>	rl.unlock();
85	>	}
86	>
87	>	/**
88	>	* locking an unlocked fair lock succeeds
89	>	*/
90	>	public void testFairLock() {
91	>	ReentrantLock rl = new ReentrantLock(true);
92	>	rl.lock();
93	>	assertTrue(rl.isLocked());
94	>	rl.unlock();
95	>	}
96	>
97	>	/**
98	>	* Unlocking an unlocked lock throws IllegalMonitorStateException
99	>	*/
100	>	public void testUnlock_IllegalMonitorStateException() {
101		ReentrantLock rl = new ReentrantLock();
102	<	try{
102	>	try {
103		rl.unlock();
104	<	fail("Should of thown Illegal Monitor State Exception");
104	>	shouldThrow();
105
106		} catch(IllegalMonitorStateException success){}
107	+	}
108
109	<
109	>	/**
110	>	* tryLock on an unlocked lock succeeds
111	>	*/
112	>	public void testTryLock() {
113	>	ReentrantLock rl = new ReentrantLock();
114	>	assertTrue(rl.tryLock());
115	>	assertTrue(rl.isLocked());
116	>	rl.unlock();
117		}
118	<
119	<	/*
120	<	* makes a lock, locks it, tries to aquire the lock in another thread
121	<	* interrupts that thread and waits for an interrupted Exception to
47	<	* be thrown.
118	>
119	>
120	>	/**
121	>	* hasQueuedThreads reports whether there are waiting threads
122		*/
123	+	public void testhasQueuedThreads() {
124	+	final ReentrantLock lock = new ReentrantLock();
125	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
126	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
127	+	try {
128	+	assertFalse(lock.hasQueuedThreads());
129	+	lock.lock();
130	+	t1.start();
131	+	Thread.sleep(SHORT_DELAY_MS);
132	+	assertTrue(lock.hasQueuedThreads());
133	+	t2.start();
134	+	Thread.sleep(SHORT_DELAY_MS);
135	+	assertTrue(lock.hasQueuedThreads());
136	+	t1.interrupt();
137	+	Thread.sleep(SHORT_DELAY_MS);
138	+	assertTrue(lock.hasQueuedThreads());
139	+	lock.unlock();
140	+	Thread.sleep(SHORT_DELAY_MS);
141	+	assertFalse(lock.hasQueuedThreads());
142	+	t1.join();
143	+	t2.join();
144	+	} catch(Exception e){
145	+	unexpectedException();
146	+	}
147	+	}
148
149	<	public void testInterruptedException(){
149	>	/**
150	>	* getQueueLength reports number of waiting threads
151	>	*/
152	>	public void testGetQueueLength() {
153		final ReentrantLock lock = new ReentrantLock();
154	<	lock.lock();
155	<	Thread t = new Thread(new Runnable() {
156	<	public void run(){
157	<	try{
158	<	lock.lockInterruptibly();
159	<	fail("should throw");
160	<	} catch(InterruptedException success){}
161	<	}
162	<	});
163	<	t.start();
164	<	t.interrupt();
165	<	lock.unlock();
154	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
155	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
156	>	try {
157	>	assertEquals(0, lock.getQueueLength());
158	>	lock.lock();
159	>	t1.start();
160	>	Thread.sleep(SHORT_DELAY_MS);
161	>	assertEquals(1, lock.getQueueLength());
162	>	t2.start();
163	>	Thread.sleep(SHORT_DELAY_MS);
164	>	assertEquals(2, lock.getQueueLength());
165	>	t1.interrupt();
166	>	Thread.sleep(SHORT_DELAY_MS);
167	>	assertEquals(1, lock.getQueueLength());
168	>	lock.unlock();
169	>	Thread.sleep(SHORT_DELAY_MS);
170	>	assertEquals(0, lock.getQueueLength());
171	>	t1.join();
172	>	t2.join();
173	>	} catch(Exception e){
174	>	unexpectedException();
175	>	}
176		}
177
178	<	/*
179	<	* tests for interrupted exception on a timed wait
68	<	*
178	>	/**
179	>	* getQueuedThreads includes waiting threads
180		*/
181	<
181	>	public void testGetQueuedThreads() {
182	>	final PublicReentrantLock lock = new PublicReentrantLock();
183	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
184	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
185	>	try {
186	>	assertTrue(lock.getQueuedThreads().isEmpty());
187	>	lock.lock();
188	>	assertTrue(lock.getQueuedThreads().isEmpty());
189	>	t1.start();
190	>	Thread.sleep(SHORT_DELAY_MS);
191	>	assertTrue(lock.getQueuedThreads().contains(t1));
192	>	t2.start();
193	>	Thread.sleep(SHORT_DELAY_MS);
194	>	assertTrue(lock.getQueuedThreads().contains(t1));
195	>	assertTrue(lock.getQueuedThreads().contains(t2));
196	>	t1.interrupt();
197	>	Thread.sleep(SHORT_DELAY_MS);
198	>	assertFalse(lock.getQueuedThreads().contains(t1));
199	>	assertTrue(lock.getQueuedThreads().contains(t2));
200	>	lock.unlock();
201	>	Thread.sleep(SHORT_DELAY_MS);
202	>	assertTrue(lock.getQueuedThreads().isEmpty());
203	>	t1.join();
204	>	t2.join();
205	>	} catch(Exception e){
206	>	unexpectedException();
207	>	}
208	>	}
209
210	<	public void testInterruptedException2(){
210	>
211	>	/**
212	>	* timed tryLock is interruptible.
213	>	*/
214	>	public void testInterruptedException2() {
215		final ReentrantLock lock = new ReentrantLock();
216		lock.lock();
217		Thread t = new Thread(new Runnable() {
218	<	public void run(){
219	<	try{
220	<	lock.tryLock(1000,TimeUnit.MILLISECONDS);
221	<	fail("should throw");
218	>	public void run() {
219	>	try {
220	>	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
221	>	threadShouldThrow();
222		} catch(InterruptedException success){}
223		}
224		});
225	<	t.start();
226	<	t.interrupt();
225	>	try {
226	>	t.start();
227	>	t.interrupt();
228	>	} catch(Exception e){
229	>	unexpectedException();
230	>	}
231		}
232
233
234	+	/**
235	+	* TryLock on a locked lock fails
236	+	*/
237		public void testTryLockWhenLocked() {
238		final ReentrantLock lock = new ReentrantLock();
239		lock.lock();
240		Thread t = new Thread(new Runnable() {
241	<	public void run(){
242	<	assertFalse(lock.tryLock());
241	>	public void run() {
242	>	threadAssertFalse(lock.tryLock());
243		}
244		});
245		try {
#	Line 98 | Line 247 | public class ReentrantLockTest extends T
247		t.join();
248		lock.unlock();
249		} catch(Exception e){
250	<	fail("unexpected exception");
250	>	unexpectedException();
251		}
252		}
253
254	<	public void testTryLock_Timeout(){
254	>	/**
255	>	* Timed tryLock on a locked lock times out
256	>	*/
257	>	public void testTryLock_Timeout() {
258		final ReentrantLock lock = new ReentrantLock();
259		lock.lock();
260		Thread t = new Thread(new Runnable() {
261	<	public void run(){
261	>	public void run() {
262		try {
263	<	assertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
263	>	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
264		} catch (Exception ex) {
265	<	fail("unexpected exception");
265	>	threadUnexpectedException();
266		}
267		}
268		});
#	Line 119 | Line 271 | public class ReentrantLockTest extends T
271		t.join();
272		lock.unlock();
273		} catch(Exception e){
274	<	fail("unexpected exception");
274	>	unexpectedException();
275		}
276		}
277
278	+	/**
279	+	* getHoldCount returns number of recursive holds
280	+	*/
281		public void testGetHoldCount() {
282		ReentrantLock lock = new ReentrantLock();
283	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
283	>	for(int i = 1; i <= SIZE; i++) {
284		lock.lock();
285		assertEquals(i,lock.getHoldCount());
286		}
287	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
287	>	for(int i = SIZE; i > 0; i--) {
288		lock.unlock();
289		assertEquals(i-1,lock.getHoldCount());
290		}
291		}
292
293
294	<
295	<
294	>	/**
295	>	* isLocked is true when locked and false when not
296	>	*/
297		public void testIsLocked() {
298		final ReentrantLock lock = new ReentrantLock();
299		lock.lock();
#	Line 148 | Line 304 | public class ReentrantLockTest extends T
304		public void run() {
305		lock.lock();
306		try {
307	<	Thread.sleep(SHORT_DELAY_MS * 2);
307	>	Thread.sleep(SMALL_DELAY_MS);
308		}
309	<	catch(Exception e) {}
309	>	catch(Exception e) {
310	>	threadUnexpectedException();
311	>	}
312		lock.unlock();
313		}
314		});
315	<	try{
315	>	try {
316		t.start();
317		Thread.sleep(SHORT_DELAY_MS);
318		assertTrue(lock.isLocked());
319		t.join();
320		assertFalse(lock.isLocked());
321		} catch(Exception e){
322	<	fail("unexpected exception");
322	>	unexpectedException();
323		}
324		}
325
326
327	<	public void testLockInterruptibly() {
327	>	/**
328	>	* lockInterruptibly is interruptible.
329	>	*/
330	>	public void testLockInterruptibly1() {
331	>	final ReentrantLock lock = new ReentrantLock();
332	>	lock.lock();
333	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
334	>	try {
335	>	t.start();
336	>	t.interrupt();
337	>	lock.unlock();
338	>	t.join();
339	>	} catch(Exception e){
340	>	unexpectedException();
341	>	}
342	>	}
343	>
344	>	/**
345	>	* lockInterruptibly succeeds when unlocked, else is interruptible
346	>	*/
347	>	public void testLockInterruptibly2() {
348		final ReentrantLock lock = new ReentrantLock();
349		try {
350		lock.lockInterruptibly();
351		} catch(Exception e) {
352	<	fail("unexpected exception");
352	>	unexpectedException();
353		}
354	<	Thread t = new Thread(new Runnable() {
177	<	public void run() {
178	<	try {
179	<	lock.lockInterruptibly();
180	<	fail("should throw");
181	<	}
182	<	catch(InterruptedException e) {}
183	<	}
184	<	});
354	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
355		try {
356		t.start();
357		t.interrupt();
#	Line 189 | Line 359 | public class ReentrantLockTest extends T
359		assertTrue(lock.isHeldByCurrentThread());
360		t.join();
361		} catch(Exception e){
362	<	fail("unexpected exception");
362	>	unexpectedException();
363		}
364		}
365
366	+	/**
367	+	* Calling await without holding lock throws IllegalMonitorStateException
368	+	*/
369		public void testAwait_IllegalMonitor() {
370		final ReentrantLock lock = new ReentrantLock();
371		final Condition c = lock.newCondition();
372		try {
373		c.await();
374	<	fail("should throw");
374	>	shouldThrow();
375		}
376		catch (IllegalMonitorStateException success) {
377		}
378		catch (Exception ex) {
379	<	fail("should throw IMSE");
379	>	unexpectedException();
380		}
381		}
382
383	+	/**
384	+	* Calling signal without holding lock throws IllegalMonitorStateException
385	+	*/
386		public void testSignal_IllegalMonitor() {
387		final ReentrantLock lock = new ReentrantLock();
388		final Condition c = lock.newCondition();
389		try {
390		c.signal();
391	<	fail("should throw");
391	>	shouldThrow();
392		}
393		catch (IllegalMonitorStateException success) {
394		}
395		catch (Exception ex) {
396	<	fail("should throw IMSE");
396	>	unexpectedException();
397		}
398		}
399
400	+	/**
401	+	* awaitNanos without a signal times out
402	+	*/
403		public void testAwaitNanos_Timeout() {
404		final ReentrantLock lock = new ReentrantLock();
405		final Condition c = lock.newCondition();
#	Line 231 | Line 410 | public class ReentrantLockTest extends T
410		lock.unlock();
411		}
412		catch (Exception ex) {
413	<	fail("unexpected exception");
413	>	unexpectedException();
414		}
415		}
416
417	+	/**
418	+	*  timed await without a signal times out
419	+	*/
420		public void testAwait_Timeout() {
421		final ReentrantLock lock = new ReentrantLock();
422		final Condition c = lock.newCondition();
423		try {
424		lock.lock();
425	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
425	>	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
426		lock.unlock();
427		}
428		catch (Exception ex) {
429	<	fail("unexpected exception");
429	>	unexpectedException();
430		}
431		}
432
433	+	/**
434	+	* awaitUntil without a signal times out
435	+	*/
436		public void testAwaitUntil_Timeout() {
437		final ReentrantLock lock = new ReentrantLock();
438		final Condition c = lock.newCondition();
#	Line 258 | Line 443 | public class ReentrantLockTest extends T
443		lock.unlock();
444		}
445		catch (Exception ex) {
446	<	fail("unexpected exception");
446	>	unexpectedException();
447		}
448		}
449
450	+	/**
451	+	* await returns when signalled
452	+	*/
453		public void testAwait() {
454		final ReentrantLock lock = new ReentrantLock();
455		final Condition c = lock.newCondition();
#	Line 273 | Line 461 | public class ReentrantLockTest extends T
461		lock.unlock();
462		}
463		catch(InterruptedException e) {
464	<	fail("unexpected exception");
464	>	threadUnexpectedException();
465		}
466		}
467		});
#	Line 288 | Line 476 | public class ReentrantLockTest extends T
476		assertFalse(t.isAlive());
477		}
478		catch (Exception ex) {
479	<	fail("unexpected exception");
479	>	unexpectedException();
480	>	}
481	>	}
482	>
483	>	/**
484	>	* hasWaiters throws NPE if null
485	>	*/
486	>	public void testHasWaitersNPE() {
487	>	final ReentrantLock lock = new ReentrantLock();
488	>	try {
489	>	lock.hasWaiters(null);
490	>	shouldThrow();
491	>	} catch (NullPointerException success) {
492	>	} catch (Exception ex) {
493	>	unexpectedException();
494		}
495		}
496
497	+	/**
498	+	* getWaitQueueLength throws NPE if null
499	+	*/
500	+	public void testGetWaitQueueLengthNPE() {
501	+	final ReentrantLock lock = new ReentrantLock();
502	+	try {
503	+	lock.getWaitQueueLength(null);
504	+	shouldThrow();
505	+	} catch (NullPointerException success) {
506	+	} catch (Exception ex) {
507	+	unexpectedException();
508	+	}
509	+	}
510	+
511	+
512	+	/**
513	+	* getWaitingThreads throws NPE if null
514	+	*/
515	+	public void testGetWaitingThreadsNPE() {
516	+	final PublicReentrantLock lock = new PublicReentrantLock();
517	+	try {
518	+	lock.getWaitingThreads(null);
519	+	shouldThrow();
520	+	} catch (NullPointerException success) {
521	+	} catch (Exception ex) {
522	+	unexpectedException();
523	+	}
524	+	}
525	+
526	+
527	+	/**
528	+	* hasWaiters throws IAE if not owned
529	+	*/
530	+	public void testHasWaitersIAE() {
531	+	final ReentrantLock lock = new ReentrantLock();
532	+	final Condition c = (lock.newCondition());
533	+	final ReentrantLock lock2 = new ReentrantLock();
534	+	try {
535	+	lock2.hasWaiters(c);
536	+	shouldThrow();
537	+	} catch (IllegalArgumentException success) {
538	+	} catch (Exception ex) {
539	+	unexpectedException();
540	+	}
541	+	}
542	+
543	+	/**
544	+	* hasWaiters throws IMSE if not locked
545	+	*/
546	+	public void testHasWaitersIMSE() {
547	+	final ReentrantLock lock = new ReentrantLock();
548	+	final Condition c = (lock.newCondition());
549	+	try {
550	+	lock.hasWaiters(c);
551	+	shouldThrow();
552	+	} catch (IllegalMonitorStateException success) {
553	+	} catch (Exception ex) {
554	+	unexpectedException();
555	+	}
556	+	}
557	+
558	+
559	+	/**
560	+	* getWaitQueueLength throws IAE if not owned
561	+	*/
562	+	public void testGetWaitQueueLengthIAE() {
563	+	final ReentrantLock lock = new ReentrantLock();
564	+	final Condition c = (lock.newCondition());
565	+	final ReentrantLock lock2 = new ReentrantLock();
566	+	try {
567	+	lock2.getWaitQueueLength(c);
568	+	shouldThrow();
569	+	} catch (IllegalArgumentException success) {
570	+	} catch (Exception ex) {
571	+	unexpectedException();
572	+	}
573	+	}
574	+
575	+	/**
576	+	* getWaitQueueLength throws IMSE if not locked
577	+	*/
578	+	public void testGetWaitQueueLengthIMSE() {
579	+	final ReentrantLock lock = new ReentrantLock();
580	+	final Condition c = (lock.newCondition());
581	+	try {
582	+	lock.getWaitQueueLength(c);
583	+	shouldThrow();
584	+	} catch (IllegalMonitorStateException success) {
585	+	} catch (Exception ex) {
586	+	unexpectedException();
587	+	}
588	+	}
589	+
590	+
591	+	/**
592	+	* getWaitingThreads throws IAE if not owned
593	+	*/
594	+	public void testGetWaitingThreadsIAE() {
595	+	final PublicReentrantLock lock = new PublicReentrantLock();
596	+	final Condition c = (lock.newCondition());
597	+	final PublicReentrantLock lock2 = new PublicReentrantLock();
598	+	try {
599	+	lock2.getWaitingThreads(c);
600	+	shouldThrow();
601	+	} catch (IllegalArgumentException success) {
602	+	} catch (Exception ex) {
603	+	unexpectedException();
604	+	}
605	+	}
606	+
607	+	/**
608	+	* getWaitingThreads throws IMSE if not locked
609	+	*/
610	+	public void testGetWaitingThreadsIMSE() {
611	+	final PublicReentrantLock lock = new PublicReentrantLock();
612	+	final Condition c = (lock.newCondition());
613	+	try {
614	+	lock.getWaitingThreads(c);
615	+	shouldThrow();
616	+	} catch (IllegalMonitorStateException success) {
617	+	} catch (Exception ex) {
618	+	unexpectedException();
619	+	}
620	+	}
621	+
622	+
623	+
624	+	/**
625	+	* hasWaiters returns true when a thread is waiting, else false
626	+	*/
627	+	public void testHasWaiters() {
628	+	final ReentrantLock lock = new ReentrantLock();
629	+	final Condition c = lock.newCondition();
630	+	Thread t = new Thread(new Runnable() {
631	+	public void run() {
632	+	try {
633	+	lock.lock();
634	+	threadAssertFalse(lock.hasWaiters(c));
635	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
636	+	c.await();
637	+	lock.unlock();
638	+	}
639	+	catch(InterruptedException e) {
640	+	threadUnexpectedException();
641	+	}
642	+	}
643	+	});
644	+
645	+	try {
646	+	t.start();
647	+	Thread.sleep(SHORT_DELAY_MS);
648	+	lock.lock();
649	+	assertTrue(lock.hasWaiters(c));
650	+	assertEquals(1, lock.getWaitQueueLength(c));
651	+	c.signal();
652	+	lock.unlock();
653	+	Thread.sleep(SHORT_DELAY_MS);
654	+	lock.lock();
655	+	assertFalse(lock.hasWaiters(c));
656	+	assertEquals(0, lock.getWaitQueueLength(c));
657	+	lock.unlock();
658	+	t.join(SHORT_DELAY_MS);
659	+	assertFalse(t.isAlive());
660	+	}
661	+	catch (Exception ex) {
662	+	unexpectedException();
663	+	}
664	+	}
665	+
666	+	/**
667	+	* getWaitQueueLength returns number of waiting threads
668	+	*/
669	+	public void testGetWaitQueueLength() {
670	+	final ReentrantLock lock = new ReentrantLock();
671	+	final Condition c = lock.newCondition();
672	+	Thread t1 = new Thread(new Runnable() {
673	+	public void run() {
674	+	try {
675	+	lock.lock();
676	+	threadAssertFalse(lock.hasWaiters(c));
677	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
678	+	c.await();
679	+	lock.unlock();
680	+	}
681	+	catch(InterruptedException e) {
682	+	threadUnexpectedException();
683	+	}
684	+	}
685	+	});
686	+
687	+	Thread t2 = new Thread(new Runnable() {
688	+	public void run() {
689	+	try {
690	+	lock.lock();
691	+	threadAssertTrue(lock.hasWaiters(c));
692	+	threadAssertEquals(1, lock.getWaitQueueLength(c));
693	+	c.await();
694	+	lock.unlock();
695	+	}
696	+	catch(InterruptedException e) {
697	+	threadUnexpectedException();
698	+	}
699	+	}
700	+	});
701	+
702	+	try {
703	+	t1.start();
704	+	Thread.sleep(SHORT_DELAY_MS);
705	+	t2.start();
706	+	Thread.sleep(SHORT_DELAY_MS);
707	+	lock.lock();
708	+	assertTrue(lock.hasWaiters(c));
709	+	assertEquals(2, lock.getWaitQueueLength(c));
710	+	c.signalAll();
711	+	lock.unlock();
712	+	Thread.sleep(SHORT_DELAY_MS);
713	+	lock.lock();
714	+	assertFalse(lock.hasWaiters(c));
715	+	assertEquals(0, lock.getWaitQueueLength(c));
716	+	lock.unlock();
717	+	t1.join(SHORT_DELAY_MS);
718	+	t2.join(SHORT_DELAY_MS);
719	+	assertFalse(t1.isAlive());
720	+	assertFalse(t2.isAlive());
721	+	}
722	+	catch (Exception ex) {
723	+	unexpectedException();
724	+	}
725	+	}
726	+
727	+	/**
728	+	* getWaitingThreads returns only and all waiting threads
729	+	*/
730	+	public void testGetWaitingThreads() {
731	+	final PublicReentrantLock lock = new PublicReentrantLock();
732	+	final Condition c = lock.newCondition();
733	+	Thread t1 = new Thread(new Runnable() {
734	+	public void run() {
735	+	try {
736	+	lock.lock();
737	+	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
738	+	c.await();
739	+	lock.unlock();
740	+	}
741	+	catch(InterruptedException e) {
742	+	threadUnexpectedException();
743	+	}
744	+	}
745	+	});
746	+
747	+	Thread t2 = new Thread(new Runnable() {
748	+	public void run() {
749	+	try {
750	+	lock.lock();
751	+	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
752	+	c.await();
753	+	lock.unlock();
754	+	}
755	+	catch(InterruptedException e) {
756	+	threadUnexpectedException();
757	+	}
758	+	}
759	+	});
760	+
761	+	try {
762	+	lock.lock();
763	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
764	+	lock.unlock();
765	+	t1.start();
766	+	Thread.sleep(SHORT_DELAY_MS);
767	+	t2.start();
768	+	Thread.sleep(SHORT_DELAY_MS);
769	+	lock.lock();
770	+	assertTrue(lock.hasWaiters(c));
771	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
772	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
773	+	c.signalAll();
774	+	lock.unlock();
775	+	Thread.sleep(SHORT_DELAY_MS);
776	+	lock.lock();
777	+	assertFalse(lock.hasWaiters(c));
778	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
779	+	lock.unlock();
780	+	t1.join(SHORT_DELAY_MS);
781	+	t2.join(SHORT_DELAY_MS);
782	+	assertFalse(t1.isAlive());
783	+	assertFalse(t2.isAlive());
784	+	}
785	+	catch (Exception ex) {
786	+	unexpectedException();
787	+	}
788	+	}
789	+
790	+
791	+
792	+	/**
793	+	* awaitUninterruptibly doesn't abort on interrupt
794	+	*/
795		public void testAwaitUninterruptibly() {
796		final ReentrantLock lock = new ReentrantLock();
797		final Condition c = lock.newCondition();
#	Line 310 | Line 810 | public class ReentrantLockTest extends T
810		lock.lock();
811		c.signal();
812		lock.unlock();
813	+	assert(t.isInterrupted());
814		t.join(SHORT_DELAY_MS);
815		assertFalse(t.isAlive());
816		}
817		catch (Exception ex) {
818	<	fail("unexpected exception");
818	>	unexpectedException();
819		}
820		}
821
822	+	/**
823	+	* await is interruptible
824	+	*/
825		public void testAwait_Interrupt() {
826		final ReentrantLock lock = new ReentrantLock();
827		final Condition c = lock.newCondition();
#	Line 327 | Line 831 | public class ReentrantLockTest extends T
831		lock.lock();
832		c.await();
833		lock.unlock();
834	<	fail("should throw");
834	>	threadShouldThrow();
835		}
836		catch(InterruptedException success) {
837		}
#	Line 342 | Line 846 | public class ReentrantLockTest extends T
846		assertFalse(t.isAlive());
847		}
848		catch (Exception ex) {
849	<	fail("unexpected exception");
849	>	unexpectedException();
850		}
851		}
852
853	+	/**
854	+	* awaitNanos is interruptible
855	+	*/
856		public void testAwaitNanos_Interrupt() {
857		final ReentrantLock lock = new ReentrantLock();
858		final Condition c = lock.newCondition();
#	Line 355 | Line 862 | public class ReentrantLockTest extends T
862		lock.lock();
863		c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
864		lock.unlock();
865	<	fail("should throw");
865	>	threadShouldThrow();
866		}
867		catch(InterruptedException success) {
868		}
#	Line 370 | Line 877 | public class ReentrantLockTest extends T
877		assertFalse(t.isAlive());
878		}
879		catch (Exception ex) {
880	<	fail("unexpected exception");
880	>	unexpectedException();
881		}
882		}
883
884	+	/**
885	+	* awaitUntil is interruptible
886	+	*/
887		public void testAwaitUntil_Interrupt() {
888		final ReentrantLock lock = new ReentrantLock();
889		final Condition c = lock.newCondition();
#	Line 384 | Line 894 | public class ReentrantLockTest extends T
894		java.util.Date d = new java.util.Date();
895		c.awaitUntil(new java.util.Date(d.getTime() + 10000));
896		lock.unlock();
897	<	fail("should throw");
897	>	threadShouldThrow();
898		}
899		catch(InterruptedException success) {
900		}
#	Line 399 | Line 909 | public class ReentrantLockTest extends T
909		assertFalse(t.isAlive());
910		}
911		catch (Exception ex) {
912	<	fail("unexpected exception");
912	>	unexpectedException();
913		}
914		}
915
916	+	/**
917	+	* signalAll wakes up all threads
918	+	*/
919		public void testSignalAll() {
920		final ReentrantLock lock = new ReentrantLock();
921		final Condition c = lock.newCondition();
#	Line 414 | Line 927 | public class ReentrantLockTest extends T
927		lock.unlock();
928		}
929		catch(InterruptedException e) {
930	<	fail("unexpected exception");
930	>	threadUnexpectedException();
931		}
932		}
933		});
#	Line 427 | Line 940 | public class ReentrantLockTest extends T
940		lock.unlock();
941		}
942		catch(InterruptedException e) {
943	<	fail("unexpected exception");
943	>	threadUnexpectedException();
944		}
945		}
946		});
#	Line 445 | Line 958 | public class ReentrantLockTest extends T
958		assertFalse(t2.isAlive());
959		}
960		catch (Exception ex) {
961	<	fail("unexpected exception");
961	>	unexpectedException();
962		}
963		}
964
965	+	/**
966	+	* A serialized lock deserializes as unlocked
967	+	*/
968		public void testSerialization() {
969		ReentrantLock l = new ReentrantLock();
970		l.lock();
#	Line 467 | Line 983 | public class ReentrantLockTest extends T
983		r.unlock();
984		} catch(Exception e){
985		e.printStackTrace();
986	<	fail("unexpected exception");
986	>	unexpectedException();
987		}
988		}
989

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