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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.13 by dl, Sun Dec 28 21:56:18 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.io.*;
13	+	import java.util.*;
14
15	<	public class ReentrantReadWriteLockTest extends TestCase {
14	<	static int HOLD_COUNT_TEST_LIMIT = 20;
15	<
15	>	public class ReentrantReadWriteLockTest 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(ReentrantReadWriteLockTest.class);
21		}
22
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	<	private static long SHORT_DELAY_MS = 100;
38	<	private static long MEDIUM_DELAY_MS = 1000;
39	<	private static long LONG_DELAY_MS = 10000;
28	<
29	<	/*
30	<	* Unlocks an unlocked lock, throws Illegal Monitor State
31	<	*
37	>	/**
38	>	* A runnable calling lockInterruptibly that expects to be
39	>	* interrupted
40		*/
41	<
42	<	public void testIllegalMonitorStateException(){
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	>	* Subclass to expose protected methods
54	>	*/
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	>	/**
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	<	}catch(IllegalMonitorStateException success){}
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	+	/**
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	<	public void testInterruptedException(){
154	>	/**
155	>	* write-lockInterruptibly is interruptible
156	>	*/
157	>	public void testWriteLockInterruptibly_Interrupted() {
158		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
159		lock.writeLock().lock();
160		Thread t = new Thread(new Runnable() {
161	<	public void run(){
162	<	try{
161	>	public void run() {
162	>	try {
163		lock.writeLock().lockInterruptibly();
164	<	fail("should throw");
165	<	}catch(InterruptedException success){}
164	>	threadShouldThrow();
165	>	} catch(InterruptedException success){}
166		}
167		});
168		try {
#	Line 59 | Line 171 | public class ReentrantReadWriteLockTest
171		lock.writeLock().unlock();
172		t.join();
173		} catch(Exception e){
174	<	fail("unexpected exception");
174	>	unexpectedException();
175		}
176		}
177
178	<	public void testInterruptedException2(){
178	>	/**
179	>	* timed write-trylock is interruptible
180	>	*/
181	>	public void testWriteTryLock_Interrupted() {
182		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
183		lock.writeLock().lock();
184		Thread t = new Thread(new Runnable() {
185	<	public void run(){
186	<	try{
185	>	public void run() {
186	>	try {
187		lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
188	<	fail("should throw");
189	<	}catch(InterruptedException success){}
188	>	threadShouldThrow();
189	>	} catch(InterruptedException success){}
190		}
191		});
192		try {
#	Line 80 | Line 195 | public class ReentrantReadWriteLockTest
195		lock.writeLock().unlock();
196		t.join();
197		} catch(Exception e){
198	<	fail("unexpected exception");
198	>	unexpectedException();
199		}
200		}
201
202	<	public void testInterruptedException3(){
202	>	/**
203	>	* read-lockInterruptibly is interruptible
204	>	*/
205	>	public void testReadLockInterruptibly_Interrupted() {
206		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
207		lock.writeLock().lock();
208		Thread t = new Thread(new Runnable() {
209	<	public void run(){
210	<	try{
209	>	public void run() {
210	>	try {
211		lock.readLock().lockInterruptibly();
212	<	fail("should throw");
213	<	}catch(InterruptedException success){}
212	>	threadShouldThrow();
213	>	} catch(InterruptedException success){}
214		}
215		});
216		try {
#	Line 101 | 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	<	fail("should throw");
237	<	}catch(InterruptedException success){}
236	>	threadShouldThrow();
237	>	} catch(InterruptedException success){}
238		}
239		});
240		try {
#	Line 121 | 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(){
258	<	assertFalse(lock.writeLock().tryLock());
257	>	public void run() {
258	>	threadAssertFalse(lock.writeLock().tryLock());
259		}
260		});
261		try {
#	Line 139 | 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(){
278	<	assertFalse(lock.readLock().tryLock());
277	>	public void run() {
278	>	threadAssertFalse(lock.readLock().tryLock());
279		}
280		});
281		try {
#	Line 156 | 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(){
298	<	assertTrue(lock.readLock().tryLock());
297	>	public void run() {
298	>	threadAssertTrue(lock.readLock().tryLock());
299		lock.readLock().unlock();
300		}
301		});
#	Line 174 | 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 205 | 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 236 | 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(){
388	<	assertTrue(lock.readLock().tryLock());
387	>	public void run() {
388	>	threadAssertTrue(lock.readLock().tryLock());
389		lock.readLock().unlock();
390		}
391		});
#	Line 255 | 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(){
411	<	assertFalse(lock.writeLock().tryLock());
410	>	public void run() {
411	>	threadAssertFalse(lock.writeLock().tryLock());
412		}
413		});
414		try {
#	Line 274 | 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	<	assertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
434	>	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
435		} catch (Exception ex) {
436	<	fail("unexpected exception");
436	>	threadUnexpectedException();
437		}
438		}
439		});
#	Line 297 | 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	<	assertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
458	>	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
459		} catch (Exception ex) {
460	<	fail("unexpected exception");
460	>	threadUnexpectedException();
461		}
462		}
463		});
#	Line 318 | 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	<	fail("should throw");
488	>	threadShouldThrow();
489		}
490		catch(InterruptedException success) {
491		}
#	Line 346 | 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	<	fail("should throw");
518	>	threadShouldThrow();
519		}
520		catch(InterruptedException success) {
521		}
#	Line 373 | 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 415 | 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 428 | 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 442 | 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 457 | Line 630 | public class ReentrantReadWriteLockTest
630		lock.writeLock().unlock();
631		}
632		catch(InterruptedException e) {
633	<	fail("unexpected exception");
633	>	threadUnexpectedException();
634		}
635		}
636		});
#	Line 472 | 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 494 | 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 511 | Line 691 | public class ReentrantReadWriteLockTest
691		lock.writeLock().lock();
692		c.await();
693		lock.writeLock().unlock();
694	<	fail("should throw");
694	>	threadShouldThrow();
695		}
696		catch(InterruptedException success) {
697		}
#	Line 526 | 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 539 | Line 722 | public class ReentrantReadWriteLockTest
722		lock.writeLock().lock();
723		c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
724		lock.writeLock().unlock();
725	<	fail("should throw");
725	>	threadShouldThrow();
726		}
727		catch(InterruptedException success) {
728		}
#	Line 554 | 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 568 | 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	<	fail("should throw");
757	>	threadShouldThrow();
758		}
759		catch(InterruptedException success) {
760		}
#	Line 583 | 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 598 | Line 787 | public class ReentrantReadWriteLockTest
787		lock.writeLock().unlock();
788		}
789		catch(InterruptedException e) {
790	<	fail("unexpected exception");
790	>	threadUnexpectedException();
791		}
792		}
793		});
#	Line 611 | Line 800 | public class ReentrantReadWriteLockTest
800		lock.writeLock().unlock();
801		}
802		catch(InterruptedException e) {
803	<	fail("unexpected exception");
803	>	threadUnexpectedException();
804		}
805		}
806		});
#	Line 629 | 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 651 | 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	>	* getQueueLength reports number of waiting threads
881	>	*/
882	>	public void testGetQueueLength() {
883	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
884	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
885	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
886	>	try {
887	>	assertEquals(0, lock.getQueueLength());
888	>	lock.writeLock().lock();
889	>	t1.start();
890	>	Thread.sleep(SHORT_DELAY_MS);
891	>	assertEquals(1, lock.getQueueLength());
892	>	t2.start();
893	>	Thread.sleep(SHORT_DELAY_MS);
894	>	assertEquals(2, lock.getQueueLength());
895	>	t1.interrupt();
896	>	Thread.sleep(SHORT_DELAY_MS);
897	>	assertEquals(1, lock.getQueueLength());
898	>	lock.writeLock().unlock();
899	>	Thread.sleep(SHORT_DELAY_MS);
900	>	assertEquals(0, lock.getQueueLength());
901	>	t1.join();
902	>	t2.join();
903	>	} catch(Exception e){
904	>	unexpectedException();
905	>	}
906	>	}
907	>
908	>	/**
909	>	* getQueuedThreads includes waiting threads
910	>	*/
911	>	public void testGetQueuedThreads() {
912	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
913	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
914	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
915	>	try {
916	>	assertTrue(lock.getQueuedThreads().isEmpty());
917	>	lock.writeLock().lock();
918	>	assertTrue(lock.getQueuedThreads().isEmpty());
919	>	t1.start();
920	>	Thread.sleep(SHORT_DELAY_MS);
921	>	assertTrue(lock.getQueuedThreads().contains(t1));
922	>	t2.start();
923	>	Thread.sleep(SHORT_DELAY_MS);
924	>	assertTrue(lock.getQueuedThreads().contains(t1));
925	>	assertTrue(lock.getQueuedThreads().contains(t2));
926	>	t1.interrupt();
927	>	Thread.sleep(SHORT_DELAY_MS);
928	>	assertFalse(lock.getQueuedThreads().contains(t1));
929	>	assertTrue(lock.getQueuedThreads().contains(t2));
930	>	lock.writeLock().unlock();
931	>	Thread.sleep(SHORT_DELAY_MS);
932	>	assertTrue(lock.getQueuedThreads().isEmpty());
933	>	t1.join();
934	>	t2.join();
935	>	} catch(Exception e){
936	>	unexpectedException();
937	>	}
938	>	}
939	>
940	>	/**
941	>	* hasWaiters throws IAE if not owned
942	>	*/
943	>	public void testHasWaitersIAE() {
944	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
945	>	final Condition c = (lock.writeLock().newCondition());
946	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
947	>	try {
948	>	lock2.hasWaiters(c);
949	>	shouldThrow();
950	>	} catch (IllegalArgumentException success) {
951	>	} catch (Exception ex) {
952	>	unexpectedException();
953	>	}
954	>	}
955	>
956	>	/**
957	>	* hasWaiters throws IMSE if not locked
958	>	*/
959	>	public void testHasWaitersIMSE() {
960	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
961	>	final Condition c = (lock.writeLock().newCondition());
962	>	try {
963	>	lock.hasWaiters(c);
964	>	shouldThrow();
965	>	} catch (IllegalMonitorStateException success) {
966	>	} catch (Exception ex) {
967	>	unexpectedException();
968	>	}
969	>	}
970	>
971	>
972	>	/**
973	>	* getWaitQueueLength throws IAE if not owned
974	>	*/
975	>	public void testGetWaitQueueLengthIAE() {
976	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
977	>	final Condition c = (lock.writeLock().newCondition());
978	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
979	>	try {
980	>	lock2.getWaitQueueLength(c);
981	>	shouldThrow();
982	>	} catch (IllegalArgumentException success) {
983	>	} catch (Exception ex) {
984	>	unexpectedException();
985		}
986		}
987
988	+	/**
989	+	* getWaitQueueLength throws IMSE if not locked
990	+	*/
991	+	public void testGetWaitQueueLengthIMSE() {
992	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
993	+	final Condition c = (lock.writeLock().newCondition());
994	+	try {
995	+	lock.getWaitQueueLength(c);
996	+	shouldThrow();
997	+	} catch (IllegalMonitorStateException success) {
998	+	} catch (Exception ex) {
999	+	unexpectedException();
1000	+	}
1001	+	}
1002	+
1003	+
1004	+	/**
1005	+	* getWaitingThreads throws IAE if not owned
1006	+	*/
1007	+	public void testGetWaitingThreadsIAE() {
1008	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1009	+	final Condition c = (lock.writeLock().newCondition());
1010	+	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1011	+	try {
1012	+	lock2.getWaitingThreads(c);
1013	+	shouldThrow();
1014	+	} catch (IllegalArgumentException success) {
1015	+	} catch (Exception ex) {
1016	+	unexpectedException();
1017	+	}
1018	+	}
1019	+
1020	+	/**
1021	+	* getWaitingThreads throws IMSE if not locked
1022	+	*/
1023	+	public void testGetWaitingThreadsIMSE() {
1024	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1025	+	final Condition c = (lock.writeLock().newCondition());
1026	+	try {
1027	+	lock.getWaitingThreads(c);
1028	+	shouldThrow();
1029	+	} catch (IllegalMonitorStateException success) {
1030	+	} catch (Exception ex) {
1031	+	unexpectedException();
1032	+	}
1033	+	}
1034	+
1035	+
1036	+	/**
1037	+	* hasWaiters returns true when a thread is waiting, else false
1038	+	*/
1039	+	public void testHasWaiters() {
1040	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1041	+	final Condition c = (lock.writeLock().newCondition());
1042	+	Thread t = new Thread(new Runnable() {
1043	+	public void run() {
1044	+	try {
1045	+	lock.writeLock().lock();
1046	+	threadAssertFalse(lock.hasWaiters(c));
1047	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1048	+	c.await();
1049	+	lock.writeLock().unlock();
1050	+	}
1051	+	catch(InterruptedException e) {
1052	+	threadUnexpectedException();
1053	+	}
1054	+	}
1055	+	});
1056	+
1057	+	try {
1058	+	t.start();
1059	+	Thread.sleep(SHORT_DELAY_MS);
1060	+	lock.writeLock().lock();
1061	+	assertTrue(lock.hasWaiters(c));
1062	+	assertEquals(1, lock.getWaitQueueLength(c));
1063	+	c.signal();
1064	+	lock.writeLock().unlock();
1065	+	Thread.sleep(SHORT_DELAY_MS);
1066	+	lock.writeLock().lock();
1067	+	assertFalse(lock.hasWaiters(c));
1068	+	assertEquals(0, lock.getWaitQueueLength(c));
1069	+	lock.writeLock().unlock();
1070	+	t.join(SHORT_DELAY_MS);
1071	+	assertFalse(t.isAlive());
1072	+	}
1073	+	catch (Exception ex) {
1074	+	unexpectedException();
1075	+	}
1076	+	}
1077	+
1078	+	/**
1079	+	* getWaitQueueLength returns number of waiting threads
1080	+	*/
1081	+	public void testGetWaitQueueLength() {
1082	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1083	+	final Condition c = (lock.writeLock().newCondition());
1084	+	Thread t = new Thread(new Runnable() {
1085	+	public void run() {
1086	+	try {
1087	+	lock.writeLock().lock();
1088	+	threadAssertFalse(lock.hasWaiters(c));
1089	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1090	+	c.await();
1091	+	lock.writeLock().unlock();
1092	+	}
1093	+	catch(InterruptedException e) {
1094	+	threadUnexpectedException();
1095	+	}
1096	+	}
1097	+	});
1098	+
1099	+	try {
1100	+	t.start();
1101	+	Thread.sleep(SHORT_DELAY_MS);
1102	+	lock.writeLock().lock();
1103	+	assertTrue(lock.hasWaiters(c));
1104	+	assertEquals(1, lock.getWaitQueueLength(c));
1105	+	c.signal();
1106	+	lock.writeLock().unlock();
1107	+	Thread.sleep(SHORT_DELAY_MS);
1108	+	lock.writeLock().lock();
1109	+	assertFalse(lock.hasWaiters(c));
1110	+	assertEquals(0, lock.getWaitQueueLength(c));
1111	+	lock.writeLock().unlock();
1112	+	t.join(SHORT_DELAY_MS);
1113	+	assertFalse(t.isAlive());
1114	+	}
1115	+	catch (Exception ex) {
1116	+	unexpectedException();
1117	+	}
1118	+	}
1119	+
1120	+
1121	+	/**
1122	+	* getWaitingThreads returns only and all waiting threads
1123	+	*/
1124	+	public void testGetWaitingThreads() {
1125	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1126	+	final Condition c = lock.writeLock().newCondition();
1127	+	Thread t1 = new Thread(new Runnable() {
1128	+	public void run() {
1129	+	try {
1130	+	lock.writeLock().lock();
1131	+	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1132	+	c.await();
1133	+	lock.writeLock().unlock();
1134	+	}
1135	+	catch(InterruptedException e) {
1136	+	threadUnexpectedException();
1137	+	}
1138	+	}
1139	+	});
1140	+
1141	+	Thread t2 = new Thread(new Runnable() {
1142	+	public void run() {
1143	+	try {
1144	+	lock.writeLock().lock();
1145	+	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1146	+	c.await();
1147	+	lock.writeLock().unlock();
1148	+	}
1149	+	catch(InterruptedException e) {
1150	+	threadUnexpectedException();
1151	+	}
1152	+	}
1153	+	});
1154	+
1155	+	try {
1156	+	lock.writeLock().lock();
1157	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1158	+	lock.writeLock().unlock();
1159	+	t1.start();
1160	+	Thread.sleep(SHORT_DELAY_MS);
1161	+	t2.start();
1162	+	Thread.sleep(SHORT_DELAY_MS);
1163	+	lock.writeLock().lock();
1164	+	assertTrue(lock.hasWaiters(c));
1165	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
1166	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
1167	+	c.signalAll();
1168	+	lock.writeLock().unlock();
1169	+	Thread.sleep(SHORT_DELAY_MS);
1170	+	lock.writeLock().lock();
1171	+	assertFalse(lock.hasWaiters(c));
1172	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1173	+	lock.writeLock().unlock();
1174	+	t1.join(SHORT_DELAY_MS);
1175	+	t2.join(SHORT_DELAY_MS);
1176	+	assertFalse(t1.isAlive());
1177	+	assertFalse(t2.isAlive());
1178	+	}
1179	+	catch (Exception ex) {
1180	+	unexpectedException();
1181	+	}
1182	+	}
1183
1184		}

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