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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.19 by dl, Sun Jan 25 13:25:28 2004 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.io.*;
13	+	import java.util.*;
14
15		public class ReentrantReadWriteLockTest extends JSR166TestCase {
16		public static void main(String[] args) {
#	Line 18 | Line 20 | public class ReentrantReadWriteLockTest
20		return new TestSuite(ReentrantReadWriteLockTest.class);
21		}
22
23	<	static int HOLD_COUNT_TEST_LIMIT = 20;
23	>	/**
24	>	* A runnable calling lockInterruptibly
25	>	*/
26	>	class InterruptibleLockRunnable implements Runnable {
27	>	final ReentrantReadWriteLock lock;
28	>	InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
29	>	public void run() {
30	>	try {
31	>	lock.writeLock().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 ReentrantReadWriteLock lock;
43	>	InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; }
44	>	public void run() {
45	>	try {
46	>	lock.writeLock().lockInterruptibly();
47	>	threadShouldThrow();
48	>	} catch(InterruptedException success){}
49	>	}
50	>	}
51
52	<	/*
53	<	* Unlocks an unlocked lock, throws Illegal Monitor State
25	<	*
52	>	/**
53	>	* Subclass to expose protected methods
54		*/
55	<	public void testIllegalMonitorStateException(){
55	>	static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
56	>	PublicReentrantReadWriteLock() { 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	>	* Constructor sets given fairness, and is in unlocked state
67	>	*/
68	>	public void testConstructor() {
69		ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
70	<	try{
71	<	rl.writeLock().unlock();
72	<	fail("Should of thown Illegal Monitor State Exception");
70	>	assertFalse(rl.isFair());
71	>	assertFalse(rl.isWriteLocked());
72	>	assertEquals(0, rl.getReadLockCount());
73	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
74	>	assertTrue(r2.isFair());
75	>	assertFalse(r2.isWriteLocked());
76	>	assertEquals(0, r2.getReadLockCount());
77	>	}
78
79	<	}catch(IllegalMonitorStateException success){}
79	>	/**
80	>	* write-locking and read-locking an unlocked lock succeed
81	>	*/
82	>	public void testLock() {
83	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
84	>	rl.writeLock().lock();
85	>	assertTrue(rl.isWriteLocked());
86	>	assertTrue(rl.isWriteLockedByCurrentThread());
87	>	assertEquals(0, rl.getReadLockCount());
88	>	rl.writeLock().unlock();
89	>	assertFalse(rl.isWriteLocked());
90	>	assertFalse(rl.isWriteLockedByCurrentThread());
91	>	assertEquals(0, rl.getReadLockCount());
92	>	rl.readLock().lock();
93	>	assertFalse(rl.isWriteLocked());
94	>	assertFalse(rl.isWriteLockedByCurrentThread());
95	>	assertEquals(1, rl.getReadLockCount());
96	>	rl.readLock().unlock();
97	>	assertFalse(rl.isWriteLocked());
98	>	assertFalse(rl.isWriteLockedByCurrentThread());
99	>	assertEquals(0, rl.getReadLockCount());
100		}
101
102
103	+	/**
104	+	* locking an unlocked fair lock succeeds
105	+	*/
106	+	public void testFairLock() {
107	+	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
108	+	rl.writeLock().lock();
109	+	assertTrue(rl.isWriteLocked());
110	+	assertTrue(rl.isWriteLockedByCurrentThread());
111	+	assertEquals(0, rl.getReadLockCount());
112	+	rl.writeLock().unlock();
113	+	assertFalse(rl.isWriteLocked());
114	+	assertFalse(rl.isWriteLockedByCurrentThread());
115	+	assertEquals(0, rl.getReadLockCount());
116	+	rl.readLock().lock();
117	+	assertFalse(rl.isWriteLocked());
118	+	assertFalse(rl.isWriteLockedByCurrentThread());
119	+	assertEquals(1, rl.getReadLockCount());
120	+	rl.readLock().unlock();
121	+	assertFalse(rl.isWriteLocked());
122	+	assertFalse(rl.isWriteLockedByCurrentThread());
123	+	assertEquals(0, rl.getReadLockCount());
124	+	}
125
126	<	public void testInterruptedException(){
126	>	/**
127	>	* getWriteHoldCount returns number of recursive holds
128	>	*/
129	>	public void testGetHoldCount() {
130	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
131	>	for(int i = 1; i <= SIZE; i++) {
132	>	lock.writeLock().lock();
133	>	assertEquals(i,lock.getWriteHoldCount());
134	>	}
135	>	for(int i = SIZE; i > 0; i--) {
136	>	lock.writeLock().unlock();
137	>	assertEquals(i-1,lock.getWriteHoldCount());
138	>	}
139	>	}
140	>
141	>
142	>	/**
143	>	* write-unlocking an unlocked lock throws IllegalMonitorStateException
144	>	*/
145	>	public void testUnlock_IllegalMonitorStateException() {
146	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
147	>	try {
148	>	rl.writeLock().unlock();
149	>	shouldThrow();
150	>	} catch(IllegalMonitorStateException success){}
151	>	}
152	>
153	>
154	>	/**
155	>	* write-lockInterruptibly is interruptible
156	>	*/
157	>	public void testWriteLockInterruptibly_Interrupted() {
158		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
40	–	lock.writeLock().lock();
159		Thread t = new Thread(new Runnable() {
160	<	public void run(){
161	<	try{
160	>	public void run() {
161	>	try {
162		lock.writeLock().lockInterruptibly();
163	<	threadFail("should throw");
164	<	}catch(InterruptedException success){}
163	>	lock.writeLock().unlock();
164	>	lock.writeLock().lockInterruptibly();
165	>	lock.writeLock().unlock();
166	>	} catch(InterruptedException success){}
167		}
168		});
169		try {
170	+	lock.writeLock().lock();
171		t.start();
172		t.interrupt();
173		lock.writeLock().unlock();
174		t.join();
175		} catch(Exception e){
176	<	fail("unexpected exception");
176	>	unexpectedException();
177		}
178		}
179
180	<	public void testInterruptedException2(){
180	>	/**
181	>	* timed write-tryLock is interruptible
182	>	*/
183	>	public void testWriteTryLock_Interrupted() {
184		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
185		lock.writeLock().lock();
186		Thread t = new Thread(new Runnable() {
187	<	public void run(){
188	<	try{
187	>	public void run() {
188	>	try {
189		lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
190	<	threadFail("should throw");
67	<	}catch(InterruptedException success){}
190	>	} catch(InterruptedException success){}
191		}
192		});
193		try {
#	Line 73 | Line 196 | public class ReentrantReadWriteLockTest
196		lock.writeLock().unlock();
197		t.join();
198		} catch(Exception e){
199	<	fail("unexpected exception");
199	>	unexpectedException();
200		}
201		}
202
203	<	public void testInterruptedException3(){
203	>	/**
204	>	* read-lockInterruptibly is interruptible
205	>	*/
206	>	public void testReadLockInterruptibly_Interrupted() {
207		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
208		lock.writeLock().lock();
209		Thread t = new Thread(new Runnable() {
210	<	public void run(){
211	<	try{
210	>	public void run() {
211	>	try {
212		lock.readLock().lockInterruptibly();
213	<	threadFail("should throw");
88	<	}catch(InterruptedException success){}
213	>	} catch(InterruptedException success){}
214		}
215		});
216		try {
#	Line 94 | Line 219 | public class ReentrantReadWriteLockTest
219		lock.writeLock().unlock();
220		t.join();
221		} catch(Exception e){
222	<	fail("unexpected exception");
222	>	unexpectedException();
223		}
224		}
225
226	<	public void testInterruptedException4(){
226	>	/**
227	>	* timed read-tryLock is interruptible
228	>	*/
229	>	public void testReadTryLock_Interrupted() {
230		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
231		lock.writeLock().lock();
232		Thread t = new Thread(new Runnable() {
233	<	public void run(){
234	<	try{
233	>	public void run() {
234	>	try {
235		lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
236	<	threadFail("should throw");
237	<	}catch(InterruptedException success){}
236	>	threadShouldThrow();
237	>	} catch(InterruptedException success){}
238		}
239		});
240		try {
#	Line 114 | Line 242 | public class ReentrantReadWriteLockTest
242		t.interrupt();
243		t.join();
244		} catch(Exception e){
245	<	fail("unexpected exception");
245	>	unexpectedException();
246		}
247		}
248
249
250	<	public void testTryLockWhenLocked() {
250	>	/**
251	>	* write-tryLock fails if locked
252	>	*/
253	>	public void testWriteTryLockWhenLocked() {
254		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
255		lock.writeLock().lock();
256		Thread t = new Thread(new Runnable() {
257	<	public void run(){
257	>	public void run() {
258		threadAssertFalse(lock.writeLock().tryLock());
259		}
260		});
#	Line 132 | Line 263 | public class ReentrantReadWriteLockTest
263		t.join();
264		lock.writeLock().unlock();
265		} catch(Exception e){
266	<	fail("unexpected exception");
266	>	unexpectedException();
267		}
268		}
269
270	<	public void testTryLockWhenLocked2() {
270	>	/**
271	>	* read-tryLock fails if locked
272	>	*/
273	>	public void testReadTryLockWhenLocked() {
274		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
275		lock.writeLock().lock();
276		Thread t = new Thread(new Runnable() {
277	<	public void run(){
277	>	public void run() {
278		threadAssertFalse(lock.readLock().tryLock());
279		}
280		});
#	Line 149 | Line 283 | public class ReentrantReadWriteLockTest
283		t.join();
284		lock.writeLock().unlock();
285		} catch(Exception e){
286	<	fail("unexpected exception");
286	>	unexpectedException();
287		}
288		}
289
290	+	/**
291	+	* Multiple threads can hold a read lock when not write-locked
292	+	*/
293		public void testMultipleReadLocks() {
294		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
295		lock.readLock().lock();
296		Thread t = new Thread(new Runnable() {
297	<	public void run(){
297	>	public void run() {
298		threadAssertTrue(lock.readLock().tryLock());
299		lock.readLock().unlock();
300		}
#	Line 167 | Line 304 | public class ReentrantReadWriteLockTest
304		t.join();
305		lock.readLock().unlock();
306		} catch(Exception e){
307	<	fail("unexpected exception");
307	>	unexpectedException();
308		}
309		}
310
311	+	/**
312	+	* A writelock succeeds after reading threads unlock
313	+	*/
314		public void testWriteAfterMultipleReadLocks() {
315		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
316		lock.readLock().lock();
317		Thread t1 = new Thread(new Runnable() {
318	<	public void run(){
318	>	public void run() {
319		lock.readLock().lock();
320		lock.readLock().unlock();
321		}
322		});
323		Thread t2 = new Thread(new Runnable() {
324	<	public void run(){
324	>	public void run() {
325		lock.writeLock().lock();
326		lock.writeLock().unlock();
327		}
#	Line 198 | Line 338 | public class ReentrantReadWriteLockTest
338		assertTrue(!t2.isAlive());
339
340		} catch(Exception e){
341	<	fail("unexpected exception");
341	>	unexpectedException();
342		}
343		}
344
345	+	/**
346	+	* Readlocks succeed after a writing thread unlocks
347	+	*/
348		public void testReadAfterWriteLock() {
349		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
350		lock.writeLock().lock();
351		Thread t1 = new Thread(new Runnable() {
352	<	public void run(){
352	>	public void run() {
353		lock.readLock().lock();
354		lock.readLock().unlock();
355		}
356		});
357		Thread t2 = new Thread(new Runnable() {
358	<	public void run(){
358	>	public void run() {
359		lock.readLock().lock();
360		lock.readLock().unlock();
361		}
#	Line 229 | Line 372 | public class ReentrantReadWriteLockTest
372		assertTrue(!t2.isAlive());
373
374		} catch(Exception e){
375	<	fail("unexpected exception");
375	>	unexpectedException();
376		}
377		}
378
379
380	+	/**
381	+	* Read tryLock succeeds if readlocked but not writelocked
382	+	*/
383		public void testTryLockWhenReadLocked() {
384		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
385		lock.readLock().lock();
386		Thread t = new Thread(new Runnable() {
387	<	public void run(){
387	>	public void run() {
388		threadAssertTrue(lock.readLock().tryLock());
389		lock.readLock().unlock();
390		}
#	Line 248 | Line 394 | public class ReentrantReadWriteLockTest
394		t.join();
395		lock.readLock().unlock();
396		} catch(Exception e){
397	<	fail("unexpected exception");
397	>	unexpectedException();
398		}
399		}
400
401
402
403	+	/**
404	+	* write tryLock fails when readlocked
405	+	*/
406		public void testWriteTryLockWhenReadLocked() {
407		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
408		lock.readLock().lock();
409		Thread t = new Thread(new Runnable() {
410	<	public void run(){
410	>	public void run() {
411		threadAssertFalse(lock.writeLock().tryLock());
412		}
413		});
#	Line 267 | Line 416 | public class ReentrantReadWriteLockTest
416		t.join();
417		lock.readLock().unlock();
418		} catch(Exception e){
419	<	fail("unexpected exception");
419	>	unexpectedException();
420		}
421		}
422
423
424
425	<	public void testTryLock_Timeout(){
425	>	/**
426	>	* write timed tryLock times out if locked
427	>	*/
428	>	public void testWriteTryLock_Timeout() {
429		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
430		lock.writeLock().lock();
431		Thread t = new Thread(new Runnable() {
432	<	public void run(){
432	>	public void run() {
433		try {
434		threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
435		} catch (Exception ex) {
436	<	threadFail("unexpected exception");
436	>	threadUnexpectedException();
437		}
438		}
439		});
#	Line 290 | Line 442 | public class ReentrantReadWriteLockTest
442		t.join();
443		lock.writeLock().unlock();
444		} catch(Exception e){
445	<	fail("unexpected exception");
445	>	unexpectedException();
446		}
447		}
448
449	<	public void testTryLock_Timeout2(){
449	>	/**
450	>	* read timed tryLock times out if write-locked
451	>	*/
452	>	public void testReadTryLock_Timeout() {
453		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
454		lock.writeLock().lock();
455		Thread t = new Thread(new Runnable() {
456	<	public void run(){
456	>	public void run() {
457		try {
458		threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
459		} catch (Exception ex) {
460	<	threadFail("unexpected exception");
460	>	threadUnexpectedException();
461		}
462		}
463		});
#	Line 311 | Line 466 | public class ReentrantReadWriteLockTest
466		t.join();
467		lock.writeLock().unlock();
468		} catch(Exception e){
469	<	fail("unexpected exception");
469	>	unexpectedException();
470		}
471		}
472
473
474	<	public void testLockInterruptibly() {
474	>	/**
475	>	* write lockInterruptibly succeeds if lock free else is interruptible
476	>	*/
477	>	public void testWriteLockInterruptibly() {
478		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
479		try {
480		lock.writeLock().lockInterruptibly();
481		} catch(Exception e) {
482	<	fail("unexpected exception");
482	>	unexpectedException();
483		}
484		Thread t = new Thread(new Runnable() {
485		public void run() {
486		try {
487		lock.writeLock().lockInterruptibly();
488	<	threadFail("should throw");
488	>	threadShouldThrow();
489		}
490		catch(InterruptedException success) {
491		}
#	Line 339 | Line 497 | public class ReentrantReadWriteLockTest
497		t.join();
498		lock.writeLock().unlock();
499		} catch(Exception e){
500	<	fail("unexpected exception");
500	>	unexpectedException();
501		}
502		}
503
504	<	public void testLockInterruptibly2() {
504	>	/**
505	>	*  read lockInterruptibly succeeds if lock free else is interruptible
506	>	*/
507	>	public void testReadLockInterruptibly() {
508		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
509		try {
510		lock.writeLock().lockInterruptibly();
511		} catch(Exception e) {
512	<	fail("unexpected exception");
512	>	unexpectedException();
513		}
514		Thread t = new Thread(new Runnable() {
515		public void run() {
516		try {
517		lock.readLock().lockInterruptibly();
518	<	threadFail("should throw");
518	>	threadShouldThrow();
519		}
520		catch(InterruptedException success) {
521		}
#	Line 366 | Line 527 | public class ReentrantReadWriteLockTest
527		t.join();
528		lock.writeLock().unlock();
529		} catch(Exception e){
530	<	fail("unexpected exception");
530	>	unexpectedException();
531		}
532		}
533
534	+	/**
535	+	* Calling await without holding lock throws IllegalMonitorStateException
536	+	*/
537		public void testAwait_IllegalMonitor() {
538		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
539		final Condition c = lock.writeLock().newCondition();
540		try {
541		c.await();
542	<	fail("should throw");
542	>	shouldThrow();
543		}
544		catch (IllegalMonitorStateException success) {
545		}
546		catch (Exception ex) {
547	<	fail("should throw IMSE");
547	>	shouldThrow();
548		}
549		}
550
551	+	/**
552	+	* Calling signal without holding lock throws IllegalMonitorStateException
553	+	*/
554		public void testSignal_IllegalMonitor() {
555		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
556		final Condition c = lock.writeLock().newCondition();
557		try {
558		c.signal();
559	<	fail("should throw");
559	>	shouldThrow();
560		}
561		catch (IllegalMonitorStateException success) {
562		}
563		catch (Exception ex) {
564	<	fail("should throw IMSE");
564	>	unexpectedException();
565		}
566		}
567
568	+	/**
569	+	* awaitNanos without a signal times out
570	+	*/
571		public void testAwaitNanos_Timeout() {
572		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
573		final Condition c = lock.writeLock().newCondition();
#	Line 408 | Line 578 | public class ReentrantReadWriteLockTest
578		lock.writeLock().unlock();
579		}
580		catch (Exception ex) {
581	<	fail("unexpected exception");
581	>	unexpectedException();
582		}
583		}
584
585	+
586	+	/**
587	+	*  timed await without a signal times out
588	+	*/
589		public void testAwait_Timeout() {
590		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
591		final Condition c = lock.writeLock().newCondition();
#	Line 421 | Line 595 | public class ReentrantReadWriteLockTest
595		lock.writeLock().unlock();
596		}
597		catch (Exception ex) {
598	<	fail("unexpected exception");
598	>	unexpectedException();
599		}
600		}
601
602	+	/**
603	+	* awaitUntil without a signal times out
604	+	*/
605		public void testAwaitUntil_Timeout() {
606		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
607		final Condition c = lock.writeLock().newCondition();
#	Line 435 | Line 612 | public class ReentrantReadWriteLockTest
612		lock.writeLock().unlock();
613		}
614		catch (Exception ex) {
615	<	fail("unexpected exception");
615	>	unexpectedException();
616		}
617		}
618
619	+	/**
620	+	* await returns when signalled
621	+	*/
622		public void testAwait() {
623		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
624		final Condition c = lock.writeLock().newCondition();
#	Line 450 | Line 630 | public class ReentrantReadWriteLockTest
630		lock.writeLock().unlock();
631		}
632		catch(InterruptedException e) {
633	<	threadFail("unexpected exception");
633	>	threadUnexpectedException();
634		}
635		}
636		});
#	Line 465 | Line 645 | public class ReentrantReadWriteLockTest
645		assertFalse(t.isAlive());
646		}
647		catch (Exception ex) {
648	<	fail("unexpected exception");
648	>	unexpectedException();
649		}
650		}
651
652	+	/**
653	+	* awaitUninterruptibly doesn't abort on interrupt
654	+	*/
655		public void testAwaitUninterruptibly() {
656		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
657		final Condition c = lock.writeLock().newCondition();
#	Line 487 | Line 670 | public class ReentrantReadWriteLockTest
670		lock.writeLock().lock();
671		c.signal();
672		lock.writeLock().unlock();
673	+	assert(t.isInterrupted());
674		t.join(SHORT_DELAY_MS);
675		assertFalse(t.isAlive());
676		}
677		catch (Exception ex) {
678	<	fail("unexpected exception");
678	>	unexpectedException();
679		}
680		}
681
682	+	/**
683	+	* await is interruptible
684	+	*/
685		public void testAwait_Interrupt() {
686		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
687		final Condition c = lock.writeLock().newCondition();
#	Line 504 | Line 691 | public class ReentrantReadWriteLockTest
691		lock.writeLock().lock();
692		c.await();
693		lock.writeLock().unlock();
694	<	threadFail("should throw");
694	>	threadShouldThrow();
695		}
696		catch(InterruptedException success) {
697		}
#	Line 519 | Line 706 | public class ReentrantReadWriteLockTest
706		assertFalse(t.isAlive());
707		}
708		catch (Exception ex) {
709	<	fail("unexpected exception");
709	>	unexpectedException();
710		}
711		}
712
713	+	/**
714	+	* awaitNanos is interruptible
715	+	*/
716		public void testAwaitNanos_Interrupt() {
717		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
718		final Condition c = lock.writeLock().newCondition();
#	Line 532 | Line 722 | public class ReentrantReadWriteLockTest
722		lock.writeLock().lock();
723		c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
724		lock.writeLock().unlock();
725	<	threadFail("should throw");
725	>	threadShouldThrow();
726		}
727		catch(InterruptedException success) {
728		}
#	Line 547 | Line 737 | public class ReentrantReadWriteLockTest
737		assertFalse(t.isAlive());
738		}
739		catch (Exception ex) {
740	<	fail("unexpected exception");
740	>	unexpectedException();
741		}
742		}
743
744	+	/**
745	+	* awaitUntil is interruptible
746	+	*/
747		public void testAwaitUntil_Interrupt() {
748		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749		final Condition c = lock.writeLock().newCondition();
#	Line 561 | Line 754 | public class ReentrantReadWriteLockTest
754		java.util.Date d = new java.util.Date();
755		c.awaitUntil(new java.util.Date(d.getTime() + 10000));
756		lock.writeLock().unlock();
757	<	threadFail("should throw");
757	>	threadShouldThrow();
758		}
759		catch(InterruptedException success) {
760		}
#	Line 576 | Line 769 | public class ReentrantReadWriteLockTest
769		assertFalse(t.isAlive());
770		}
771		catch (Exception ex) {
772	<	fail("unexpected exception");
772	>	unexpectedException();
773		}
774		}
775
776	+	/**
777	+	* signalAll wakes up all threads
778	+	*/
779		public void testSignalAll() {
780		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
781		final Condition c = lock.writeLock().newCondition();
#	Line 591 | Line 787 | public class ReentrantReadWriteLockTest
787		lock.writeLock().unlock();
788		}
789		catch(InterruptedException e) {
790	<	threadFail("unexpected exception");
790	>	threadUnexpectedException();
791		}
792		}
793		});
#	Line 604 | Line 800 | public class ReentrantReadWriteLockTest
800		lock.writeLock().unlock();
801		}
802		catch(InterruptedException e) {
803	<	threadFail("unexpected exception");
803	>	threadUnexpectedException();
804		}
805		}
806		});
#	Line 622 | Line 818 | public class ReentrantReadWriteLockTest
818		assertFalse(t2.isAlive());
819		}
820		catch (Exception ex) {
821	<	fail("unexpected exception");
821	>	unexpectedException();
822		}
823		}
824
825	+	/**
826	+	* A serialized lock deserializes as unlocked
827	+	*/
828		public void testSerialization() {
829		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
830		l.readLock().lock();
#	Line 644 | Line 843 | public class ReentrantReadWriteLockTest
843		r.readLock().unlock();
844		} catch(Exception e){
845		e.printStackTrace();
846	<	fail("unexpected exception");
846	>	unexpectedException();
847	>	}
848	>	}
849	>
850	>	/**
851	>	* hasQueuedThreads reports whether there are waiting threads
852	>	*/
853	>	public void testhasQueuedThreads() {
854	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
855	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
856	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
857	>	try {
858	>	assertFalse(lock.hasQueuedThreads());
859	>	lock.writeLock().lock();
860	>	t1.start();
861	>	Thread.sleep(SHORT_DELAY_MS);
862	>	assertTrue(lock.hasQueuedThreads());
863	>	t2.start();
864	>	Thread.sleep(SHORT_DELAY_MS);
865	>	assertTrue(lock.hasQueuedThreads());
866	>	t1.interrupt();
867	>	Thread.sleep(SHORT_DELAY_MS);
868	>	assertTrue(lock.hasQueuedThreads());
869	>	lock.writeLock().unlock();
870	>	Thread.sleep(SHORT_DELAY_MS);
871	>	assertFalse(lock.hasQueuedThreads());
872	>	t1.join();
873	>	t2.join();
874	>	} catch(Exception e){
875	>	unexpectedException();
876	>	}
877	>	}
878	>
879	>	/**
880	>	* hasQueuedThread(null) throws NPE
881	>	*/
882	>	public void testHasQueuedThreadNPE() {
883	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
884	>	try {
885	>	sync.hasQueuedThread(null);
886	>	shouldThrow();
887	>	} catch (NullPointerException success) {
888	>	}
889	>	}
890	>
891	>	/**
892	>	* hasQueuedThread reports whether a thread is queued.
893	>	*/
894	>	public void testHasQueuedThread() {
895	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
896	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
897	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
898	>	try {
899	>	assertFalse(sync.hasQueuedThread(t1));
900	>	assertFalse(sync.hasQueuedThread(t2));
901	>	sync.writeLock().lock();
902	>	t1.start();
903	>	Thread.sleep(SHORT_DELAY_MS);
904	>	assertTrue(sync.hasQueuedThread(t1));
905	>	t2.start();
906	>	Thread.sleep(SHORT_DELAY_MS);
907	>	assertTrue(sync.hasQueuedThread(t1));
908	>	assertTrue(sync.hasQueuedThread(t2));
909	>	t1.interrupt();
910	>	Thread.sleep(SHORT_DELAY_MS);
911	>	assertFalse(sync.hasQueuedThread(t1));
912	>	assertTrue(sync.hasQueuedThread(t2));
913	>	sync.writeLock().unlock();
914	>	Thread.sleep(SHORT_DELAY_MS);
915	>	assertFalse(sync.hasQueuedThread(t1));
916	>	Thread.sleep(SHORT_DELAY_MS);
917	>	assertFalse(sync.hasQueuedThread(t2));
918	>	t1.join();
919	>	t2.join();
920	>	} catch(Exception e){
921	>	unexpectedException();
922	>	}
923	>	}
924	>
925	>
926	>	/**
927	>	* getQueueLength reports number of waiting threads
928	>	*/
929	>	public void testGetQueueLength() {
930	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
931	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
932	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
933	>	try {
934	>	assertEquals(0, lock.getQueueLength());
935	>	lock.writeLock().lock();
936	>	t1.start();
937	>	Thread.sleep(SHORT_DELAY_MS);
938	>	assertEquals(1, lock.getQueueLength());
939	>	t2.start();
940	>	Thread.sleep(SHORT_DELAY_MS);
941	>	assertEquals(2, lock.getQueueLength());
942	>	t1.interrupt();
943	>	Thread.sleep(SHORT_DELAY_MS);
944	>	assertEquals(1, lock.getQueueLength());
945	>	lock.writeLock().unlock();
946	>	Thread.sleep(SHORT_DELAY_MS);
947	>	assertEquals(0, lock.getQueueLength());
948	>	t1.join();
949	>	t2.join();
950	>	} catch(Exception e){
951	>	unexpectedException();
952	>	}
953	>	}
954	>
955	>	/**
956	>	* getQueuedThreads includes waiting threads
957	>	*/
958	>	public void testGetQueuedThreads() {
959	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
960	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
961	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
962	>	try {
963	>	assertTrue(lock.getQueuedThreads().isEmpty());
964	>	lock.writeLock().lock();
965	>	assertTrue(lock.getQueuedThreads().isEmpty());
966	>	t1.start();
967	>	Thread.sleep(SHORT_DELAY_MS);
968	>	assertTrue(lock.getQueuedThreads().contains(t1));
969	>	t2.start();
970	>	Thread.sleep(SHORT_DELAY_MS);
971	>	assertTrue(lock.getQueuedThreads().contains(t1));
972	>	assertTrue(lock.getQueuedThreads().contains(t2));
973	>	t1.interrupt();
974	>	Thread.sleep(SHORT_DELAY_MS);
975	>	assertFalse(lock.getQueuedThreads().contains(t1));
976	>	assertTrue(lock.getQueuedThreads().contains(t2));
977	>	lock.writeLock().unlock();
978	>	Thread.sleep(SHORT_DELAY_MS);
979	>	assertTrue(lock.getQueuedThreads().isEmpty());
980	>	t1.join();
981	>	t2.join();
982	>	} catch(Exception e){
983	>	unexpectedException();
984	>	}
985	>	}
986	>
987	>	/**
988	>	* hasWaiters throws NPE if null
989	>	*/
990	>	public void testHasWaitersNPE() {
991	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
992	>	try {
993	>	lock.hasWaiters(null);
994	>	shouldThrow();
995	>	} catch (NullPointerException success) {
996	>	} catch (Exception ex) {
997	>	unexpectedException();
998	>	}
999	>	}
1000	>
1001	>	/**
1002	>	* getWaitQueueLength throws NPE if null
1003	>	*/
1004	>	public void testGetWaitQueueLengthNPE() {
1005	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1006	>	try {
1007	>	lock.getWaitQueueLength(null);
1008	>	shouldThrow();
1009	>	} catch (NullPointerException success) {
1010	>	} catch (Exception ex) {
1011	>	unexpectedException();
1012	>	}
1013	>	}
1014	>
1015	>
1016	>	/**
1017	>	* getWaitingThreads throws NPE if null
1018	>	*/
1019	>	public void testGetWaitingThreadsNPE() {
1020	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1021	>	try {
1022	>	lock.getWaitingThreads(null);
1023	>	shouldThrow();
1024	>	} catch (NullPointerException success) {
1025	>	} catch (Exception ex) {
1026	>	unexpectedException();
1027		}
1028		}
1029
1030	+	/**
1031	+	* hasWaiters throws IAE if not owned
1032	+	*/
1033	+	public void testHasWaitersIAE() {
1034	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1035	+	final Condition c = (lock.writeLock().newCondition());
1036	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1037	+	try {
1038	+	lock2.hasWaiters(c);
1039	+	shouldThrow();
1040	+	} catch (IllegalArgumentException success) {
1041	+	} catch (Exception ex) {
1042	+	unexpectedException();
1043	+	}
1044	+	}
1045	+
1046	+	/**
1047	+	* hasWaiters throws IMSE if not locked
1048	+	*/
1049	+	public void testHasWaitersIMSE() {
1050	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1051	+	final Condition c = (lock.writeLock().newCondition());
1052	+	try {
1053	+	lock.hasWaiters(c);
1054	+	shouldThrow();
1055	+	} catch (IllegalMonitorStateException success) {
1056	+	} catch (Exception ex) {
1057	+	unexpectedException();
1058	+	}
1059	+	}
1060	+
1061	+
1062	+	/**
1063	+	* getWaitQueueLength throws IAE if not owned
1064	+	*/
1065	+	public void testGetWaitQueueLengthIAE() {
1066	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1067	+	final Condition c = (lock.writeLock().newCondition());
1068	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1069	+	try {
1070	+	lock2.getWaitQueueLength(c);
1071	+	shouldThrow();
1072	+	} catch (IllegalArgumentException success) {
1073	+	} catch (Exception ex) {
1074	+	unexpectedException();
1075	+	}
1076	+	}
1077	+
1078	+	/**
1079	+	* getWaitQueueLength throws IMSE if not locked
1080	+	*/
1081	+	public void testGetWaitQueueLengthIMSE() {
1082	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1083	+	final Condition c = (lock.writeLock().newCondition());
1084	+	try {
1085	+	lock.getWaitQueueLength(c);
1086	+	shouldThrow();
1087	+	} catch (IllegalMonitorStateException success) {
1088	+	} catch (Exception ex) {
1089	+	unexpectedException();
1090	+	}
1091	+	}
1092	+
1093	+
1094	+	/**
1095	+	* getWaitingThreads throws IAE if not owned
1096	+	*/
1097	+	public void testGetWaitingThreadsIAE() {
1098	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1099	+	final Condition c = (lock.writeLock().newCondition());
1100	+	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1101	+	try {
1102	+	lock2.getWaitingThreads(c);
1103	+	shouldThrow();
1104	+	} catch (IllegalArgumentException success) {
1105	+	} catch (Exception ex) {
1106	+	unexpectedException();
1107	+	}
1108	+	}
1109	+
1110	+	/**
1111	+	* getWaitingThreads throws IMSE if not locked
1112	+	*/
1113	+	public void testGetWaitingThreadsIMSE() {
1114	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1115	+	final Condition c = (lock.writeLock().newCondition());
1116	+	try {
1117	+	lock.getWaitingThreads(c);
1118	+	shouldThrow();
1119	+	} catch (IllegalMonitorStateException success) {
1120	+	} catch (Exception ex) {
1121	+	unexpectedException();
1122	+	}
1123	+	}
1124	+
1125	+
1126	+	/**
1127	+	* hasWaiters returns true when a thread is waiting, else false
1128	+	*/
1129	+	public void testHasWaiters() {
1130	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1131	+	final Condition c = (lock.writeLock().newCondition());
1132	+	Thread t = new Thread(new Runnable() {
1133	+	public void run() {
1134	+	try {
1135	+	lock.writeLock().lock();
1136	+	threadAssertFalse(lock.hasWaiters(c));
1137	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1138	+	c.await();
1139	+	lock.writeLock().unlock();
1140	+	}
1141	+	catch(InterruptedException e) {
1142	+	threadUnexpectedException();
1143	+	}
1144	+	}
1145	+	});
1146	+
1147	+	try {
1148	+	t.start();
1149	+	Thread.sleep(SHORT_DELAY_MS);
1150	+	lock.writeLock().lock();
1151	+	assertTrue(lock.hasWaiters(c));
1152	+	assertEquals(1, lock.getWaitQueueLength(c));
1153	+	c.signal();
1154	+	lock.writeLock().unlock();
1155	+	Thread.sleep(SHORT_DELAY_MS);
1156	+	lock.writeLock().lock();
1157	+	assertFalse(lock.hasWaiters(c));
1158	+	assertEquals(0, lock.getWaitQueueLength(c));
1159	+	lock.writeLock().unlock();
1160	+	t.join(SHORT_DELAY_MS);
1161	+	assertFalse(t.isAlive());
1162	+	}
1163	+	catch (Exception ex) {
1164	+	unexpectedException();
1165	+	}
1166	+	}
1167	+
1168	+	/**
1169	+	* getWaitQueueLength returns number of waiting threads
1170	+	*/
1171	+	public void testGetWaitQueueLength() {
1172	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1173	+	final Condition c = (lock.writeLock().newCondition());
1174	+	Thread t = new Thread(new Runnable() {
1175	+	public void run() {
1176	+	try {
1177	+	lock.writeLock().lock();
1178	+	threadAssertFalse(lock.hasWaiters(c));
1179	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1180	+	c.await();
1181	+	lock.writeLock().unlock();
1182	+	}
1183	+	catch(InterruptedException e) {
1184	+	threadUnexpectedException();
1185	+	}
1186	+	}
1187	+	});
1188	+
1189	+	try {
1190	+	t.start();
1191	+	Thread.sleep(SHORT_DELAY_MS);
1192	+	lock.writeLock().lock();
1193	+	assertTrue(lock.hasWaiters(c));
1194	+	assertEquals(1, lock.getWaitQueueLength(c));
1195	+	c.signal();
1196	+	lock.writeLock().unlock();
1197	+	Thread.sleep(SHORT_DELAY_MS);
1198	+	lock.writeLock().lock();
1199	+	assertFalse(lock.hasWaiters(c));
1200	+	assertEquals(0, lock.getWaitQueueLength(c));
1201	+	lock.writeLock().unlock();
1202	+	t.join(SHORT_DELAY_MS);
1203	+	assertFalse(t.isAlive());
1204	+	}
1205	+	catch (Exception ex) {
1206	+	unexpectedException();
1207	+	}
1208	+	}
1209	+
1210	+
1211	+	/**
1212	+	* getWaitingThreads returns only and all waiting threads
1213	+	*/
1214	+	public void testGetWaitingThreads() {
1215	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1216	+	final Condition c = lock.writeLock().newCondition();
1217	+	Thread t1 = new Thread(new Runnable() {
1218	+	public void run() {
1219	+	try {
1220	+	lock.writeLock().lock();
1221	+	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1222	+	c.await();
1223	+	lock.writeLock().unlock();
1224	+	}
1225	+	catch(InterruptedException e) {
1226	+	threadUnexpectedException();
1227	+	}
1228	+	}
1229	+	});
1230	+
1231	+	Thread t2 = new Thread(new Runnable() {
1232	+	public void run() {
1233	+	try {
1234	+	lock.writeLock().lock();
1235	+	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1236	+	c.await();
1237	+	lock.writeLock().unlock();
1238	+	}
1239	+	catch(InterruptedException e) {
1240	+	threadUnexpectedException();
1241	+	}
1242	+	}
1243	+	});
1244	+
1245	+	try {
1246	+	lock.writeLock().lock();
1247	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1248	+	lock.writeLock().unlock();
1249	+	t1.start();
1250	+	Thread.sleep(SHORT_DELAY_MS);
1251	+	t2.start();
1252	+	Thread.sleep(SHORT_DELAY_MS);
1253	+	lock.writeLock().lock();
1254	+	assertTrue(lock.hasWaiters(c));
1255	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
1256	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
1257	+	c.signalAll();
1258	+	lock.writeLock().unlock();
1259	+	Thread.sleep(SHORT_DELAY_MS);
1260	+	lock.writeLock().lock();
1261	+	assertFalse(lock.hasWaiters(c));
1262	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1263	+	lock.writeLock().unlock();
1264	+	t1.join(SHORT_DELAY_MS);
1265	+	t2.join(SHORT_DELAY_MS);
1266	+	assertFalse(t1.isAlive());
1267	+	assertFalse(t2.isAlive());
1268	+	}
1269	+	catch (Exception ex) {
1270	+	unexpectedException();
1271	+	}
1272	+	}
1273	+
1274	+	/**
1275	+	* toString indicates current lock state
1276	+	*/
1277	+	public void testToString() {
1278	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1279	+	String us = lock.toString();
1280	+	assertTrue(us.indexOf("Write locks = 0") >= 0);
1281	+	assertTrue(us.indexOf("Read locks = 0") >= 0);
1282	+	lock.writeLock().lock();
1283	+	String ws = lock.toString();
1284	+	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1285	+	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1286	+	lock.writeLock().unlock();
1287	+	lock.readLock().lock();
1288	+	lock.readLock().lock();
1289	+	String rs = lock.toString();
1290	+	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1291	+	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1292	+	}
1293	+
1294	+	/**
1295	+	* readLock.toString indicates current lock state
1296	+	*/
1297	+	public void testReadLockToString() {
1298	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1299	+	String us = lock.readLock().toString();
1300	+	assertTrue(us.indexOf("Read locks = 0") >= 0);
1301	+	lock.readLock().lock();
1302	+	lock.readLock().lock();
1303	+	String rs = lock.readLock().toString();
1304	+	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1305	+	}
1306	+
1307	+	/**
1308	+	* writeLock.toString indicates current lock state
1309	+	*/
1310	+	public void testWriteLockToString() {
1311	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1312	+	String us = lock.writeLock().toString();
1313	+	assertTrue(us.indexOf("Unlocked") >= 0);
1314	+	lock.writeLock().lock();
1315	+	String ls = lock.writeLock().toString();
1316	+	assertTrue(ls.indexOf("Locked") >= 0);
1317	+	}
1318
1319		}

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