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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.5 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.25 by dl, Thu May 18 10:29:23 2006 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.*;
#	Line 19 | Line 20 | public class ReentrantLockTest extends J
20		return new TestSuite(ReentrantLockTest.class);
21		}
22
23	<	static int HOLD_COUNT_TEST_LIMIT = 20;
24	<
23	>	/**
24	>	* A runnable calling lockInterruptibly
25	>	*/
26		class InterruptibleLockRunnable implements Runnable {
27		final ReentrantLock lock;
28		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
29	<	public void run(){
30	<	try{
29	>	public void run() {
30	>	try {
31		lock.lockInterruptibly();
32		} catch(InterruptedException success){}
33		}
34		}
35
36	<	// Same, except must interrupt
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{
44	>	public void run() {
45	>	try {
46		lock.lockInterruptibly();
47	<	threadFail("should throw");
47	>	threadShouldThrow();
48		} catch(InterruptedException success){}
49		}
50		}
51
52		/**
53	<	* To expose protected methods
53	>	* Subclass to expose protected methods
54		*/
55	<	static class MyReentrantLock extends ReentrantLock {
56	<	MyReentrantLock() { super(); }
55	>	static class PublicReentrantLock extends ReentrantLock {
56	>	PublicReentrantLock() { super(); }
57		public Collection<Thread> getQueuedThreads() {
58		return super.getQueuedThreads();
59		}
60	<	public ConditionObject newCondition() {
61	<	return new MyCondition(this);
60	>	public Collection<Thread> getWaitingThreads(Condition c) {
61	>	return super.getWaitingThreads(c);
62		}
63
58	–	static class MyCondition extends ReentrantLock.ConditionObject {
59	–	MyCondition(MyReentrantLock l) { super(l); }
60	–	public Collection<Thread> getWaitingThreads() {
61	–	return super.getWaitingThreads();
62	–	}
63	–	}
64
65		}
66
67	<	/*
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 testIllegalMonitorStateException(){
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	<	/*
110	<	* lockInterruptibly is interruptible.
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	>	/**
121	>	* hasQueuedThreads reports whether there are waiting threads
122		*/
123	<	public void testInterruptedException(){
123	>	public void testhasQueuedThreads() {
124		final ReentrantLock lock = new ReentrantLock();
125	<	lock.lock();
126	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
125	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
126	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
127		try {
128	<	t.start();
129	<	t.interrupt();
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	<	t.join();
140	>	Thread.sleep(SHORT_DELAY_MS);
141	>	assertFalse(lock.hasQueuedThreads());
142	>	t1.join();
143	>	t2.join();
144		} catch(Exception e){
145	<	fail("unexpected exception");
145	>	unexpectedException();
146		}
147		}
148
149	<	/*
150	<	* getLockQueueLength reports number of waiting threads
149	>	/**
150	>	* getQueueLength reports number of waiting threads
151		*/
152	<	public void testgetLockQueueLength(){
152	>	public void testGetQueueLength() {
153		final ReentrantLock lock = new ReentrantLock();
154		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
155		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
156		try {
157	<	assertEquals(0, lock.getLockQueueLength());
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	>	* getQueueLength reports number of waiting threads
180	>	*/
181	>	public void testGetQueueLength_fair() {
182	>	final ReentrantLock lock = new ReentrantLock(true);
183	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
184	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
185	>	try {
186	>	assertEquals(0, lock.getQueueLength());
187		lock.lock();
188		t1.start();
189		Thread.sleep(SHORT_DELAY_MS);
190	<	assertEquals(1, lock.getLockQueueLength());
190	>	assertEquals(1, lock.getQueueLength());
191		t2.start();
192		Thread.sleep(SHORT_DELAY_MS);
193	<	assertEquals(2, lock.getLockQueueLength());
193	>	assertEquals(2, lock.getQueueLength());
194		t1.interrupt();
195		Thread.sleep(SHORT_DELAY_MS);
196	<	assertEquals(1, lock.getLockQueueLength());
196	>	assertEquals(1, lock.getQueueLength());
197		lock.unlock();
198		Thread.sleep(SHORT_DELAY_MS);
199	<	assertEquals(0, lock.getLockQueueLength());
199	>	assertEquals(0, lock.getQueueLength());
200	>	t1.join();
201	>	t2.join();
202	>	} catch(Exception e){
203	>	unexpectedException();
204	>	}
205	>	}
206	>
207	>	/**
208	>	* hasQueuedThread(null) throws NPE
209	>	*/
210	>	public void testHasQueuedThreadNPE() {
211	>	final ReentrantLock sync = new ReentrantLock();
212	>	try {
213	>	sync.hasQueuedThread(null);
214	>	shouldThrow();
215	>	} catch (NullPointerException success) {
216	>	}
217	>	}
218	>
219	>	/**
220	>	* hasQueuedThread reports whether a thread is queued.
221	>	*/
222	>	public void testHasQueuedThread() {
223	>	final ReentrantLock sync = new ReentrantLock();
224	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
225	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
226	>	try {
227	>	assertFalse(sync.hasQueuedThread(t1));
228	>	assertFalse(sync.hasQueuedThread(t2));
229	>	sync.lock();
230	>	t1.start();
231	>	Thread.sleep(SHORT_DELAY_MS);
232	>	assertTrue(sync.hasQueuedThread(t1));
233	>	t2.start();
234	>	Thread.sleep(SHORT_DELAY_MS);
235	>	assertTrue(sync.hasQueuedThread(t1));
236	>	assertTrue(sync.hasQueuedThread(t2));
237	>	t1.interrupt();
238	>	Thread.sleep(SHORT_DELAY_MS);
239	>	assertFalse(sync.hasQueuedThread(t1));
240	>	assertTrue(sync.hasQueuedThread(t2));
241	>	sync.unlock();
242	>	Thread.sleep(SHORT_DELAY_MS);
243	>	assertFalse(sync.hasQueuedThread(t1));
244	>	Thread.sleep(SHORT_DELAY_MS);
245	>	assertFalse(sync.hasQueuedThread(t2));
246		t1.join();
247		t2.join();
248		} catch(Exception e){
249	<	fail("unexpected exception");
249	>	unexpectedException();
250		}
251		}
252
253	<	/*
253	>
254	>	/**
255		* getQueuedThreads includes waiting threads
256		*/
257	<	public void testGetQueuedThreads(){
258	<	final MyReentrantLock lock = new MyReentrantLock();
257	>	public void testGetQueuedThreads() {
258	>	final PublicReentrantLock lock = new PublicReentrantLock();
259		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
260		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
261		try {
#	Line 150 | Line 279 | public class ReentrantLockTest extends J
279		t1.join();
280		t2.join();
281		} catch(Exception e){
282	<	fail("unexpected exception");
282	>	unexpectedException();
283		}
284		}
285
286
287	<	/*
288	<	* timed trylock is interruptible.
287	>	/**
288	>	* timed tryLock is interruptible.
289		*/
290	<	public void testInterruptedException2(){
290	>	public void testInterruptedException2() {
291		final ReentrantLock lock = new ReentrantLock();
292		lock.lock();
293		Thread t = new Thread(new Runnable() {
294	<	public void run(){
295	<	try{
294	>	public void run() {
295	>	try {
296		lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
297	<	threadFail("should throw");
297	>	threadShouldThrow();
298		} catch(InterruptedException success){}
299		}
300		});
#	Line 173 | Line 302 | public class ReentrantLockTest extends J
302		t.start();
303		t.interrupt();
304		} catch(Exception e){
305	<	fail("unexpected exception");
305	>	unexpectedException();
306		}
307		}
308
309
310		/**
311	<	* Trylock on a locked lock fails
311	>	* TryLock on a locked lock fails
312		*/
313		public void testTryLockWhenLocked() {
314		final ReentrantLock lock = new ReentrantLock();
315		lock.lock();
316		Thread t = new Thread(new Runnable() {
317	<	public void run(){
317	>	public void run() {
318		threadAssertFalse(lock.tryLock());
319		}
320		});
#	Line 194 | Line 323 | public class ReentrantLockTest extends J
323		t.join();
324		lock.unlock();
325		} catch(Exception e){
326	<	fail("unexpected exception");
326	>	unexpectedException();
327		}
328		}
329
330		/**
331	<	* Timed Trylock on a locked lock times out
331	>	* Timed tryLock on a locked lock times out
332		*/
333	<	public void testTryLock_Timeout(){
333	>	public void testTryLock_Timeout() {
334		final ReentrantLock lock = new ReentrantLock();
335		lock.lock();
336		Thread t = new Thread(new Runnable() {
337	<	public void run(){
337	>	public void run() {
338		try {
339		threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
340		} catch (Exception ex) {
341	<	threadFail("unexpected exception");
341	>	threadUnexpectedException();
342		}
343		}
344		});
#	Line 218 | Line 347 | public class ReentrantLockTest extends J
347		t.join();
348		lock.unlock();
349		} catch(Exception e){
350	<	fail("unexpected exception");
350	>	unexpectedException();
351		}
352		}
353
#	Line 227 | Line 356 | public class ReentrantLockTest extends J
356		*/
357		public void testGetHoldCount() {
358		ReentrantLock lock = new ReentrantLock();
359	<	for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) {
359	>	for(int i = 1; i <= SIZE; i++) {
360		lock.lock();
361		assertEquals(i,lock.getHoldCount());
362		}
363	<	for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) {
363	>	for(int i = SIZE; i > 0; i--) {
364		lock.unlock();
365		assertEquals(i-1,lock.getHoldCount());
366		}
#	Line 254 | Line 383 | public class ReentrantLockTest extends J
383		Thread.sleep(SMALL_DELAY_MS);
384		}
385		catch(Exception e) {
386	<	threadFail("unexpected exception");
386	>	threadUnexpectedException();
387		}
388		lock.unlock();
389		}
390		});
391	<	try{
391	>	try {
392		t.start();
393		Thread.sleep(SHORT_DELAY_MS);
394		assertTrue(lock.isLocked());
395		t.join();
396		assertFalse(lock.isLocked());
397		} catch(Exception e){
398	<	fail("unexpected exception");
398	>	unexpectedException();
399		}
400		}
401
402
403		/**
404	+	* lockInterruptibly is interruptible.
405	+	*/
406	+	public void testLockInterruptibly1() {
407	+	final ReentrantLock lock = new ReentrantLock();
408	+	lock.lock();
409	+	Thread t = new Thread(new InterruptedLockRunnable(lock));
410	+	try {
411	+	t.start();
412	+	Thread.sleep(SHORT_DELAY_MS);
413	+	t.interrupt();
414	+	Thread.sleep(SHORT_DELAY_MS);
415	+	lock.unlock();
416	+	t.join();
417	+	} catch(Exception e){
418	+	unexpectedException();
419	+	}
420	+	}
421	+
422	+	/**
423		* lockInterruptibly succeeds when unlocked, else is interruptible
424		*/
425	<	public void testLockInterruptibly() {
425	>	public void testLockInterruptibly2() {
426		final ReentrantLock lock = new ReentrantLock();
427		try {
428		lock.lockInterruptibly();
429		} catch(Exception e) {
430	<	fail("unexpected exception");
430	>	unexpectedException();
431		}
432		Thread t = new Thread(new InterruptedLockRunnable(lock));
433		try {
#	Line 289 | Line 437 | public class ReentrantLockTest extends J
437		assertTrue(lock.isHeldByCurrentThread());
438		t.join();
439		} catch(Exception e){
440	<	fail("unexpected exception");
440	>	unexpectedException();
441		}
442		}
443
444	+	/**
445	+	* Calling await without holding lock throws IllegalMonitorStateException
446	+	*/
447		public void testAwait_IllegalMonitor() {
448		final ReentrantLock lock = new ReentrantLock();
449		final Condition c = lock.newCondition();
450		try {
451		c.await();
452	<	fail("should throw");
452	>	shouldThrow();
453		}
454		catch (IllegalMonitorStateException success) {
455		}
456		catch (Exception ex) {
457	<	fail("should throw IMSE");
457	>	unexpectedException();
458		}
459		}
460
461	+	/**
462	+	* Calling signal without holding lock throws IllegalMonitorStateException
463	+	*/
464		public void testSignal_IllegalMonitor() {
465		final ReentrantLock lock = new ReentrantLock();
466		final Condition c = lock.newCondition();
467		try {
468		c.signal();
469	<	fail("should throw");
469	>	shouldThrow();
470		}
471		catch (IllegalMonitorStateException success) {
472		}
473		catch (Exception ex) {
474	<	fail("should throw IMSE");
474	>	unexpectedException();
475		}
476		}
477
478	+	/**
479	+	* awaitNanos without a signal times out
480	+	*/
481		public void testAwaitNanos_Timeout() {
482		final ReentrantLock lock = new ReentrantLock();
483		final Condition c = lock.newCondition();
#	Line 331 | Line 488 | public class ReentrantLockTest extends J
488		lock.unlock();
489		}
490		catch (Exception ex) {
491	<	fail("unexpected exception");
491	>	unexpectedException();
492		}
493		}
494
495	+	/**
496	+	*  timed await without a signal times out
497	+	*/
498		public void testAwait_Timeout() {
499		final ReentrantLock lock = new ReentrantLock();
500		final Condition c = lock.newCondition();
501		try {
502		lock.lock();
503	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
503	>	c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
504		lock.unlock();
505		}
506		catch (Exception ex) {
507	<	fail("unexpected exception");
507	>	unexpectedException();
508		}
509		}
510
511	+	/**
512	+	* awaitUntil without a signal times out
513	+	*/
514		public void testAwaitUntil_Timeout() {
515		final ReentrantLock lock = new ReentrantLock();
516		final Condition c = lock.newCondition();
517		try {
518		lock.lock();
519		java.util.Date d = new java.util.Date();
520	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
520	>	c.awaitUntil(new java.util.Date(d.getTime() + 10));
521		lock.unlock();
522		}
523		catch (Exception ex) {
524	<	fail("unexpected exception");
524	>	unexpectedException();
525		}
526		}
527
528	+	/**
529	+	* await returns when signalled
530	+	*/
531		public void testAwait() {
532		final ReentrantLock lock = new ReentrantLock();
533	<	final ReentrantLock.ConditionObject c = lock.newCondition();
533	>	final Condition c = lock.newCondition();
534		Thread t = new Thread(new Runnable() {
535		public void run() {
536		try {
#	Line 373 | Line 539 | public class ReentrantLockTest extends J
539		lock.unlock();
540		}
541		catch(InterruptedException e) {
542	<	threadFail("unexpected exception");
542	>	threadUnexpectedException();
543		}
544		}
545		});
#	Line 388 | Line 554 | public class ReentrantLockTest extends J
554		assertFalse(t.isAlive());
555		}
556		catch (Exception ex) {
557	<	fail("unexpected exception");
557	>	unexpectedException();
558		}
559		}
560
561	+	/**
562	+	* hasWaiters throws NPE if null
563	+	*/
564	+	public void testHasWaitersNPE() {
565	+	final ReentrantLock lock = new ReentrantLock();
566	+	try {
567	+	lock.hasWaiters(null);
568	+	shouldThrow();
569	+	} catch (NullPointerException success) {
570	+	} catch (Exception ex) {
571	+	unexpectedException();
572	+	}
573	+	}
574	+
575	+	/**
576	+	* getWaitQueueLength throws NPE if null
577	+	*/
578	+	public void testGetWaitQueueLengthNPE() {
579	+	final ReentrantLock lock = new ReentrantLock();
580	+	try {
581	+	lock.getWaitQueueLength(null);
582	+	shouldThrow();
583	+	} catch (NullPointerException success) {
584	+	} catch (Exception ex) {
585	+	unexpectedException();
586	+	}
587	+	}
588	+
589	+
590	+	/**
591	+	* getWaitingThreads throws NPE if null
592	+	*/
593	+	public void testGetWaitingThreadsNPE() {
594	+	final PublicReentrantLock lock = new PublicReentrantLock();
595	+	try {
596	+	lock.getWaitingThreads(null);
597	+	shouldThrow();
598	+	} catch (NullPointerException success) {
599	+	} catch (Exception ex) {
600	+	unexpectedException();
601	+	}
602	+	}
603	+
604	+
605	+	/**
606	+	* hasWaiters throws IAE if not owned
607	+	*/
608	+	public void testHasWaitersIAE() {
609	+	final ReentrantLock lock = new ReentrantLock();
610	+	final Condition c = (lock.newCondition());
611	+	final ReentrantLock lock2 = new ReentrantLock();
612	+	try {
613	+	lock2.hasWaiters(c);
614	+	shouldThrow();
615	+	} catch (IllegalArgumentException success) {
616	+	} catch (Exception ex) {
617	+	unexpectedException();
618	+	}
619	+	}
620	+
621	+	/**
622	+	* hasWaiters throws IMSE if not locked
623	+	*/
624	+	public void testHasWaitersIMSE() {
625	+	final ReentrantLock lock = new ReentrantLock();
626	+	final Condition c = (lock.newCondition());
627	+	try {
628	+	lock.hasWaiters(c);
629	+	shouldThrow();
630	+	} catch (IllegalMonitorStateException success) {
631	+	} catch (Exception ex) {
632	+	unexpectedException();
633	+	}
634	+	}
635	+
636	+
637	+	/**
638	+	* getWaitQueueLength throws IAE if not owned
639	+	*/
640	+	public void testGetWaitQueueLengthIAE() {
641	+	final ReentrantLock lock = new ReentrantLock();
642	+	final Condition c = (lock.newCondition());
643	+	final ReentrantLock lock2 = new ReentrantLock();
644	+	try {
645	+	lock2.getWaitQueueLength(c);
646	+	shouldThrow();
647	+	} catch (IllegalArgumentException success) {
648	+	} catch (Exception ex) {
649	+	unexpectedException();
650	+	}
651	+	}
652	+
653	+	/**
654	+	* getWaitQueueLength throws IMSE if not locked
655	+	*/
656	+	public void testGetWaitQueueLengthIMSE() {
657	+	final ReentrantLock lock = new ReentrantLock();
658	+	final Condition c = (lock.newCondition());
659	+	try {
660	+	lock.getWaitQueueLength(c);
661	+	shouldThrow();
662	+	} catch (IllegalMonitorStateException success) {
663	+	} catch (Exception ex) {
664	+	unexpectedException();
665	+	}
666	+	}
667	+
668	+
669	+	/**
670	+	* getWaitingThreads throws IAE if not owned
671	+	*/
672	+	public void testGetWaitingThreadsIAE() {
673	+	final PublicReentrantLock lock = new PublicReentrantLock();
674	+	final Condition c = (lock.newCondition());
675	+	final PublicReentrantLock lock2 = new PublicReentrantLock();
676	+	try {
677	+	lock2.getWaitingThreads(c);
678	+	shouldThrow();
679	+	} catch (IllegalArgumentException success) {
680	+	} catch (Exception ex) {
681	+	unexpectedException();
682	+	}
683	+	}
684	+
685	+	/**
686	+	* getWaitingThreads throws IMSE if not locked
687	+	*/
688	+	public void testGetWaitingThreadsIMSE() {
689	+	final PublicReentrantLock lock = new PublicReentrantLock();
690	+	final Condition c = (lock.newCondition());
691	+	try {
692	+	lock.getWaitingThreads(c);
693	+	shouldThrow();
694	+	} catch (IllegalMonitorStateException success) {
695	+	} catch (Exception ex) {
696	+	unexpectedException();
697	+	}
698	+	}
699	+
700	+
701	+
702	+	/**
703	+	* hasWaiters returns true when a thread is waiting, else false
704	+	*/
705		public void testHasWaiters() {
706		final ReentrantLock lock = new ReentrantLock();
707	<	final ReentrantLock.ConditionObject c = lock.newCondition();
707	>	final Condition c = lock.newCondition();
708		Thread t = new Thread(new Runnable() {
709		public void run() {
710		try {
711		lock.lock();
712	<	threadAssertFalse(c.hasWaiters());
713	<	threadAssertEquals(0, c.getWaitQueueLength());
712	>	threadAssertFalse(lock.hasWaiters(c));
713	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
714		c.await();
715		lock.unlock();
716		}
717		catch(InterruptedException e) {
718	<	threadFail("unexpected exception");
718	>	threadUnexpectedException();
719		}
720		}
721		});
#	Line 414 | Line 724 | public class ReentrantLockTest extends J
724		t.start();
725		Thread.sleep(SHORT_DELAY_MS);
726		lock.lock();
727	<	assertTrue(c.hasWaiters());
728	<	assertEquals(1, c.getWaitQueueLength());
727	>	assertTrue(lock.hasWaiters(c));
728	>	assertEquals(1, lock.getWaitQueueLength(c));
729		c.signal();
730		lock.unlock();
731		Thread.sleep(SHORT_DELAY_MS);
732		lock.lock();
733	<	assertFalse(c.hasWaiters());
734	<	assertEquals(0, c.getWaitQueueLength());
733	>	assertFalse(lock.hasWaiters(c));
734	>	assertEquals(0, lock.getWaitQueueLength(c));
735		lock.unlock();
736		t.join(SHORT_DELAY_MS);
737		assertFalse(t.isAlive());
738		}
739		catch (Exception ex) {
740	<	fail("unexpected exception");
740	>	unexpectedException();
741		}
742		}
743
744	+	/**
745	+	* getWaitQueueLength returns number of waiting threads
746	+	*/
747		public void testGetWaitQueueLength() {
748		final ReentrantLock lock = new ReentrantLock();
749	<	final ReentrantLock.ConditionObject c = lock.newCondition();
749	>	final Condition c = lock.newCondition();
750		Thread t1 = new Thread(new Runnable() {
751		public void run() {
752		try {
753		lock.lock();
754	<	threadAssertFalse(c.hasWaiters());
755	<	threadAssertEquals(0, c.getWaitQueueLength());
754	>	threadAssertFalse(lock.hasWaiters(c));
755	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
756		c.await();
757		lock.unlock();
758		}
759		catch(InterruptedException e) {
760	<	threadFail("unexpected exception");
760	>	threadUnexpectedException();
761		}
762		}
763		});
#	Line 453 | Line 766 | public class ReentrantLockTest extends J
766		public void run() {
767		try {
768		lock.lock();
769	<	threadAssertTrue(c.hasWaiters());
770	<	threadAssertEquals(1, c.getWaitQueueLength());
769	>	threadAssertTrue(lock.hasWaiters(c));
770	>	threadAssertEquals(1, lock.getWaitQueueLength(c));
771		c.await();
772		lock.unlock();
773		}
774		catch(InterruptedException e) {
775	<	threadFail("unexpected exception");
775	>	threadUnexpectedException();
776		}
777		}
778		});
#	Line 470 | Line 783 | public class ReentrantLockTest extends J
783		t2.start();
784		Thread.sleep(SHORT_DELAY_MS);
785		lock.lock();
786	<	assertTrue(c.hasWaiters());
787	<	assertEquals(2, c.getWaitQueueLength());
786	>	assertTrue(lock.hasWaiters(c));
787	>	assertEquals(2, lock.getWaitQueueLength(c));
788		c.signalAll();
789		lock.unlock();
790		Thread.sleep(SHORT_DELAY_MS);
791		lock.lock();
792	<	assertFalse(c.hasWaiters());
793	<	assertEquals(0, c.getWaitQueueLength());
792	>	assertFalse(lock.hasWaiters(c));
793	>	assertEquals(0, lock.getWaitQueueLength(c));
794		lock.unlock();
795		t1.join(SHORT_DELAY_MS);
796		t2.join(SHORT_DELAY_MS);
#	Line 485 | Line 798 | public class ReentrantLockTest extends J
798		assertFalse(t2.isAlive());
799		}
800		catch (Exception ex) {
801	<	fail("unexpected exception");
801	>	unexpectedException();
802		}
803		}
804
805	+	/**
806	+	* getWaitingThreads returns only and all waiting threads
807	+	*/
808		public void testGetWaitingThreads() {
809	<	final MyReentrantLock lock = new MyReentrantLock();
810	<	final MyReentrantLock.MyCondition c = (MyReentrantLock.MyCondition)lock.newCondition();
809	>	final PublicReentrantLock lock = new PublicReentrantLock();
810	>	final Condition c = lock.newCondition();
811		Thread t1 = new Thread(new Runnable() {
812		public void run() {
813		try {
814		lock.lock();
815	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
815	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
816		c.await();
817		lock.unlock();
818		}
819		catch(InterruptedException e) {
820	<	threadFail("unexpected exception");
820	>	threadUnexpectedException();
821		}
822		}
823		});
#	Line 510 | Line 826 | public class ReentrantLockTest extends J
826		public void run() {
827		try {
828		lock.lock();
829	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
829	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
830		c.await();
831		lock.unlock();
832		}
833		catch(InterruptedException e) {
834	<	threadFail("unexpected exception");
834	>	threadUnexpectedException();
835		}
836		}
837		});
838
839		try {
840		lock.lock();
841	<	assertTrue(c.getWaitingThreads().isEmpty());
841	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
842		lock.unlock();
843		t1.start();
844		Thread.sleep(SHORT_DELAY_MS);
845		t2.start();
846		Thread.sleep(SHORT_DELAY_MS);
847		lock.lock();
848	<	assertTrue(c.hasWaiters());
849	<	assertTrue(c.getWaitingThreads().contains(t1));
850	<	assertTrue(c.getWaitingThreads().contains(t2));
848	>	assertTrue(lock.hasWaiters(c));
849	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
850	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
851		c.signalAll();
852		lock.unlock();
853		Thread.sleep(SHORT_DELAY_MS);
854		lock.lock();
855	<	assertFalse(c.hasWaiters());
856	<	assertTrue(c.getWaitingThreads().isEmpty());
855	>	assertFalse(lock.hasWaiters(c));
856	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
857		lock.unlock();
858		t1.join(SHORT_DELAY_MS);
859		t2.join(SHORT_DELAY_MS);
#	Line 545 | Line 861 | public class ReentrantLockTest extends J
861		assertFalse(t2.isAlive());
862		}
863		catch (Exception ex) {
864	<	fail("unexpected exception");
864	>	unexpectedException();
865		}
866		}
867
868	+	/** A helper class for uninterruptible wait tests */
869	+	class UninterruptableThread extends Thread {
870	+	private ReentrantLock lock;
871	+	private Condition c;
872	+
873	+	public volatile boolean canAwake = false;
874	+	public volatile boolean interrupted = false;
875	+	public volatile boolean lockStarted = false;
876	+
877	+	public UninterruptableThread(ReentrantLock lock, Condition c) {
878	+	this.lock = lock;
879	+	this.c = c;
880	+	}
881	+
882	+	public synchronized void run() {
883	+	lock.lock();
884	+	lockStarted = true;
885	+
886	+	while (!canAwake) {
887	+	c.awaitUninterruptibly();
888	+	}
889	+
890	+	interrupted = isInterrupted();
891	+	lock.unlock();
892	+	}
893	+	}
894	+
895	+	/**
896	+	* awaitUninterruptibly doesn't abort on interrupt
897	+	*/
898		public void testAwaitUninterruptibly() {
899	<	final ReentrantLock lock = new ReentrantLock();
899	>	final ReentrantLock lock = new ReentrantLock();
900		final Condition c = lock.newCondition();
901	<	Thread t = new Thread(new Runnable() {
556	<	public void run() {
557	<	lock.lock();
558	<	c.awaitUninterruptibly();
559	<	lock.unlock();
560	<	}
561	<	});
901	>	UninterruptableThread thread = new UninterruptableThread(lock, c);
902
903		try {
904	<	t.start();
905	<	Thread.sleep(SHORT_DELAY_MS);
906	<	t.interrupt();
904	>	thread.start();
905	>
906	>	while (!thread.lockStarted) {
907	>	Thread.sleep(100);
908	>	}
909	>
910		lock.lock();
911	<	c.signal();
912	<	lock.unlock();
913	<	t.join(SHORT_DELAY_MS);
914	<	assertFalse(t.isAlive());
915	<	}
916	<	catch (Exception ex) {
917	<	fail("unexpected exception");
911	>	try {
912	>	thread.interrupt();
913	>	thread.canAwake = true;
914	>	c.signal();
915	>	} finally {
916	>	lock.unlock();
917	>	}
918	>
919	>	thread.join();
920	>	assertTrue(thread.interrupted);
921	>	assertFalse(thread.isAlive());
922	>	} catch (Exception ex) {
923	>	unexpectedException();
924		}
925		}
926
927	+	/**
928	+	* await is interruptible
929	+	*/
930		public void testAwait_Interrupt() {
931		final ReentrantLock lock = new ReentrantLock();
932		final Condition c = lock.newCondition();
#	Line 584 | Line 936 | public class ReentrantLockTest extends J
936		lock.lock();
937		c.await();
938		lock.unlock();
939	<	threadFail("should throw");
939	>	threadShouldThrow();
940		}
941		catch(InterruptedException success) {
942		}
#	Line 599 | Line 951 | public class ReentrantLockTest extends J
951		assertFalse(t.isAlive());
952		}
953		catch (Exception ex) {
954	<	fail("unexpected exception");
954	>	unexpectedException();
955		}
956		}
957
958	+	/**
959	+	* awaitNanos is interruptible
960	+	*/
961		public void testAwaitNanos_Interrupt() {
962		final ReentrantLock lock = new ReentrantLock();
963		final Condition c = lock.newCondition();
#	Line 610 | Line 965 | public class ReentrantLockTest extends J
965		public void run() {
966		try {
967		lock.lock();
968	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
968	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
969		lock.unlock();
970	<	threadFail("should throw");
970	>	threadShouldThrow();
971		}
972		catch(InterruptedException success) {
973		}
#	Line 627 | Line 982 | public class ReentrantLockTest extends J
982		assertFalse(t.isAlive());
983		}
984		catch (Exception ex) {
985	<	fail("unexpected exception");
985	>	unexpectedException();
986		}
987		}
988
989	+	/**
990	+	* awaitUntil is interruptible
991	+	*/
992		public void testAwaitUntil_Interrupt() {
993		final ReentrantLock lock = new ReentrantLock();
994		final Condition c = lock.newCondition();
#	Line 641 | Line 999 | public class ReentrantLockTest extends J
999		java.util.Date d = new java.util.Date();
1000		c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1001		lock.unlock();
1002	<	threadFail("should throw");
1002	>	threadShouldThrow();
1003		}
1004		catch(InterruptedException success) {
1005		}
#	Line 656 | Line 1014 | public class ReentrantLockTest extends J
1014		assertFalse(t.isAlive());
1015		}
1016		catch (Exception ex) {
1017	<	fail("unexpected exception");
1017	>	unexpectedException();
1018		}
1019		}
1020
1021	+	/**
1022	+	* signalAll wakes up all threads
1023	+	*/
1024		public void testSignalAll() {
1025		final ReentrantLock lock = new ReentrantLock();
1026		final Condition c = lock.newCondition();
#	Line 671 | Line 1032 | public class ReentrantLockTest extends J
1032		lock.unlock();
1033		}
1034		catch(InterruptedException e) {
1035	<	threadFail("unexpected exception");
1035	>	threadUnexpectedException();
1036		}
1037		}
1038		});
#	Line 684 | Line 1045 | public class ReentrantLockTest extends J
1045		lock.unlock();
1046		}
1047		catch(InterruptedException e) {
1048	<	threadFail("unexpected exception");
1048	>	threadUnexpectedException();
1049		}
1050		}
1051		});
#	Line 702 | Line 1063 | public class ReentrantLockTest extends J
1063		assertFalse(t2.isAlive());
1064		}
1065		catch (Exception ex) {
1066	<	fail("unexpected exception");
1066	>	unexpectedException();
1067		}
1068		}
1069
1070	+	/**
1071	+	* await after multiple reentrant locking preserves lock count
1072	+	*/
1073	+	public void testAwaitLockCount() {
1074	+	final ReentrantLock lock = new ReentrantLock();
1075	+	final Condition c = lock.newCondition();
1076	+	Thread t1 = new Thread(new Runnable() {
1077	+	public void run() {
1078	+	try {
1079	+	lock.lock();
1080	+	threadAssertEquals(1, lock.getHoldCount());
1081	+	c.await();
1082	+	threadAssertEquals(1, lock.getHoldCount());
1083	+	lock.unlock();
1084	+	}
1085	+	catch(InterruptedException e) {
1086	+	threadUnexpectedException();
1087	+	}
1088	+	}
1089	+	});
1090	+
1091	+	Thread t2 = new Thread(new Runnable() {
1092	+	public void run() {
1093	+	try {
1094	+	lock.lock();
1095	+	lock.lock();
1096	+	threadAssertEquals(2, lock.getHoldCount());
1097	+	c.await();
1098	+	threadAssertEquals(2, lock.getHoldCount());
1099	+	lock.unlock();
1100	+	lock.unlock();
1101	+	}
1102	+	catch(InterruptedException e) {
1103	+	threadUnexpectedException();
1104	+	}
1105	+	}
1106	+	});
1107	+
1108	+	try {
1109	+	t1.start();
1110	+	t2.start();
1111	+	Thread.sleep(SHORT_DELAY_MS);
1112	+	lock.lock();
1113	+	c.signalAll();
1114	+	lock.unlock();
1115	+	t1.join(SHORT_DELAY_MS);
1116	+	t2.join(SHORT_DELAY_MS);
1117	+	assertFalse(t1.isAlive());
1118	+	assertFalse(t2.isAlive());
1119	+	}
1120	+	catch (Exception ex) {
1121	+	unexpectedException();
1122	+	}
1123	+	}
1124	+
1125	+	/**
1126	+	* A serialized lock deserializes as unlocked
1127	+	*/
1128		public void testSerialization() {
1129		ReentrantLock l = new ReentrantLock();
1130		l.lock();
#	Line 724 | Line 1143 | public class ReentrantLockTest extends J
1143		r.unlock();
1144		} catch(Exception e){
1145		e.printStackTrace();
1146	<	fail("unexpected exception");
1146	>	unexpectedException();
1147		}
1148		}
1149
1150	+	/**
1151	+	* toString indicates current lock state
1152	+	*/
1153	+	public void testToString() {
1154	+	ReentrantLock lock = new ReentrantLock();
1155	+	String us = lock.toString();
1156	+	assertTrue(us.indexOf("Unlocked") >= 0);
1157	+	lock.lock();
1158	+	String ls = lock.toString();
1159	+	assertTrue(ls.indexOf("Locked") >= 0);
1160	+	}
1161	+
1162		}

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