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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 1.16 by dl, Wed Jan 7 01:02:17 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 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	<	private static long SHORT_DELAY_MS = 100;
37	<	private static long MEDIUM_DELAY_MS = 1000;
38	<	private static long LONG_DELAY_MS = 10000;
39	<
29	<	/*
30	<	* Unlocks an unlocked lock, throws Illegal Monitor State
31	<	*
36	>
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	<	}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	+	/**
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	<	public void testInterruptedException(){
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();
47	–	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	>	lock.writeLock().unlock();
164		lock.writeLock().lockInterruptibly();
165	<	fail("should throw");
166	<	}catch(InterruptedException success){}
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	<	fail("should throw");
191	<	}catch(InterruptedException success){}
190	>	threadShouldThrow();
191	>	} catch(InterruptedException success){}
192		}
193		});
194		try {
#	Line 80 | Line 197 | public class ReentrantReadWriteLockTest
197		lock.writeLock().unlock();
198		t.join();
199		} catch(Exception e){
200	<	fail("unexpected exception");
200	>	unexpectedException();
201		}
202		}
203
204	<	public void testInterruptedException3(){
204	>	/**
205	>	* read-lockInterruptibly is interruptible
206	>	*/
207	>	public void testReadLockInterruptibly_Interrupted() {
208		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
209		lock.writeLock().lock();
210		Thread t = new Thread(new Runnable() {
211	<	public void run(){
212	<	try{
211	>	public void run() {
212	>	try {
213		lock.readLock().lockInterruptibly();
214	<	fail("should throw");
95	<	}catch(InterruptedException success){}
214	>	} catch(InterruptedException success){}
215		}
216		});
217		try {
#	Line 101 | Line 220 | public class ReentrantReadWriteLockTest
220		lock.writeLock().unlock();
221		t.join();
222		} catch(Exception e){
223	<	fail("unexpected exception");
223	>	unexpectedException();
224		}
225		}
226
227	<	public void testInterruptedException4(){
227	>	/**
228	>	* timed read-tryLock is interruptible
229	>	*/
230	>	public void testReadTryLock_Interrupted() {
231		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
232		lock.writeLock().lock();
233		Thread t = new Thread(new Runnable() {
234	<	public void run(){
235	<	try{
234	>	public void run() {
235	>	try {
236		lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
237	<	fail("should throw");
238	<	}catch(InterruptedException success){}
237	>	threadShouldThrow();
238	>	} catch(InterruptedException success){}
239		}
240		});
241		try {
#	Line 121 | Line 243 | public class ReentrantReadWriteLockTest
243		t.interrupt();
244		t.join();
245		} catch(Exception e){
246	<	fail("unexpected exception");
246	>	unexpectedException();
247		}
248		}
249
250
251	<	public void testTryLockWhenLocked() {
251	>	/**
252	>	* write-tryLock fails if locked
253	>	*/
254	>	public void testWriteTryLockWhenLocked() {
255		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
256		lock.writeLock().lock();
257		Thread t = new Thread(new Runnable() {
258	<	public void run(){
259	<	assertFalse(lock.writeLock().tryLock());
258	>	public void run() {
259	>	threadAssertFalse(lock.writeLock().tryLock());
260		}
261		});
262		try {
#	Line 139 | Line 264 | public class ReentrantReadWriteLockTest
264		t.join();
265		lock.writeLock().unlock();
266		} catch(Exception e){
267	<	fail("unexpected exception");
267	>	unexpectedException();
268		}
269		}
270
271	<	public void testTryLockWhenLocked2() {
271	>	/**
272	>	* read-tryLock fails if locked
273	>	*/
274	>	public void testReadTryLockWhenLocked() {
275		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
276		lock.writeLock().lock();
277		Thread t = new Thread(new Runnable() {
278	<	public void run(){
279	<	assertFalse(lock.readLock().tryLock());
278	>	public void run() {
279	>	threadAssertFalse(lock.readLock().tryLock());
280		}
281		});
282		try {
#	Line 156 | Line 284 | public class ReentrantReadWriteLockTest
284		t.join();
285		lock.writeLock().unlock();
286		} catch(Exception e){
287	<	fail("unexpected exception");
287	>	unexpectedException();
288		}
289		}
290
291	+	/**
292	+	* Multiple threads can hold a read lock when not write-locked
293	+	*/
294		public void testMultipleReadLocks() {
295		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
296		lock.readLock().lock();
297		Thread t = new Thread(new Runnable() {
298	<	public void run(){
299	<	assertTrue(lock.readLock().tryLock());
298	>	public void run() {
299	>	threadAssertTrue(lock.readLock().tryLock());
300		lock.readLock().unlock();
301		}
302		});
#	Line 174 | Line 305 | public class ReentrantReadWriteLockTest
305		t.join();
306		lock.readLock().unlock();
307		} catch(Exception e){
308	<	fail("unexpected exception");
308	>	unexpectedException();
309		}
310		}
311
312	+	/**
313	+	* A writelock succeeds after reading threads unlock
314	+	*/
315		public void testWriteAfterMultipleReadLocks() {
316		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317		lock.readLock().lock();
318		Thread t1 = new Thread(new Runnable() {
319	<	public void run(){
319	>	public void run() {
320		lock.readLock().lock();
321		lock.readLock().unlock();
322		}
323		});
324		Thread t2 = new Thread(new Runnable() {
325	<	public void run(){
325	>	public void run() {
326		lock.writeLock().lock();
327		lock.writeLock().unlock();
328		}
#	Line 205 | Line 339 | public class ReentrantReadWriteLockTest
339		assertTrue(!t2.isAlive());
340
341		} catch(Exception e){
342	<	fail("unexpected exception");
342	>	unexpectedException();
343		}
344		}
345
346	+	/**
347	+	* Readlocks succeed after a writing thread unlocks
348	+	*/
349		public void testReadAfterWriteLock() {
350		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
351		lock.writeLock().lock();
352		Thread t1 = new Thread(new Runnable() {
353	<	public void run(){
353	>	public void run() {
354		lock.readLock().lock();
355		lock.readLock().unlock();
356		}
357		});
358		Thread t2 = new Thread(new Runnable() {
359	<	public void run(){
359	>	public void run() {
360		lock.readLock().lock();
361		lock.readLock().unlock();
362		}
#	Line 236 | Line 373 | public class ReentrantReadWriteLockTest
373		assertTrue(!t2.isAlive());
374
375		} catch(Exception e){
376	<	fail("unexpected exception");
376	>	unexpectedException();
377		}
378		}
379
380
381	+	/**
382	+	* Read tryLock succeeds if readlocked but not writelocked
383	+	*/
384		public void testTryLockWhenReadLocked() {
385		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
386		lock.readLock().lock();
387		Thread t = new Thread(new Runnable() {
388	<	public void run(){
389	<	assertTrue(lock.readLock().tryLock());
388	>	public void run() {
389	>	threadAssertTrue(lock.readLock().tryLock());
390		lock.readLock().unlock();
391		}
392		});
#	Line 255 | Line 395 | public class ReentrantReadWriteLockTest
395		t.join();
396		lock.readLock().unlock();
397		} catch(Exception e){
398	<	fail("unexpected exception");
398	>	unexpectedException();
399		}
400		}
401
402
403
404	+	/**
405	+	* write tryLock fails when readlocked
406	+	*/
407		public void testWriteTryLockWhenReadLocked() {
408		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
409		lock.readLock().lock();
410		Thread t = new Thread(new Runnable() {
411	<	public void run(){
412	<	assertFalse(lock.writeLock().tryLock());
411	>	public void run() {
412	>	threadAssertFalse(lock.writeLock().tryLock());
413		}
414		});
415		try {
#	Line 274 | Line 417 | public class ReentrantReadWriteLockTest
417		t.join();
418		lock.readLock().unlock();
419		} catch(Exception e){
420	<	fail("unexpected exception");
420	>	unexpectedException();
421		}
422		}
423
424
425
426	<	public void testTryLock_Timeout(){
426	>	/**
427	>	* write timed tryLock times out if locked
428	>	*/
429	>	public void testWriteTryLock_Timeout() {
430		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
431		lock.writeLock().lock();
432		Thread t = new Thread(new Runnable() {
433	<	public void run(){
433	>	public void run() {
434		try {
435	<	assertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
435	>	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
436		} catch (Exception ex) {
437	<	fail("unexpected exception");
437	>	threadUnexpectedException();
438		}
439		}
440		});
#	Line 297 | Line 443 | public class ReentrantReadWriteLockTest
443		t.join();
444		lock.writeLock().unlock();
445		} catch(Exception e){
446	<	fail("unexpected exception");
446	>	unexpectedException();
447		}
448		}
449
450	<	public void testTryLock_Timeout2(){
450	>	/**
451	>	* read timed tryLock times out if write-locked
452	>	*/
453	>	public void testReadTryLock_Timeout() {
454		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
455		lock.writeLock().lock();
456		Thread t = new Thread(new Runnable() {
457	<	public void run(){
457	>	public void run() {
458		try {
459	<	assertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
459	>	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
460		} catch (Exception ex) {
461	<	fail("unexpected exception");
461	>	threadUnexpectedException();
462		}
463		}
464		});
#	Line 318 | Line 467 | public class ReentrantReadWriteLockTest
467		t.join();
468		lock.writeLock().unlock();
469		} catch(Exception e){
470	<	fail("unexpected exception");
470	>	unexpectedException();
471		}
472		}
473
474
475	<	public void testLockInterruptibly() {
475	>	/**
476	>	* write lockInterruptibly succeeds if lock free else is interruptible
477	>	*/
478	>	public void testWriteLockInterruptibly() {
479		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
480		try {
481		lock.writeLock().lockInterruptibly();
482		} catch(Exception e) {
483	<	fail("unexpected exception");
483	>	unexpectedException();
484		}
485		Thread t = new Thread(new Runnable() {
486		public void run() {
487		try {
488		lock.writeLock().lockInterruptibly();
489	<	fail("should throw");
489	>	threadShouldThrow();
490		}
491		catch(InterruptedException success) {
492		}
#	Line 346 | Line 498 | public class ReentrantReadWriteLockTest
498		t.join();
499		lock.writeLock().unlock();
500		} catch(Exception e){
501	<	fail("unexpected exception");
501	>	unexpectedException();
502		}
503		}
504
505	<	public void testLockInterruptibly2() {
505	>	/**
506	>	*  read lockInterruptibly succeeds if lock free else is interruptible
507	>	*/
508	>	public void testReadLockInterruptibly() {
509		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
510		try {
511		lock.writeLock().lockInterruptibly();
512		} catch(Exception e) {
513	<	fail("unexpected exception");
513	>	unexpectedException();
514		}
515		Thread t = new Thread(new Runnable() {
516		public void run() {
517		try {
518		lock.readLock().lockInterruptibly();
519	<	fail("should throw");
519	>	threadShouldThrow();
520		}
521		catch(InterruptedException success) {
522		}
#	Line 373 | Line 528 | public class ReentrantReadWriteLockTest
528		t.join();
529		lock.writeLock().unlock();
530		} catch(Exception e){
531	<	fail("unexpected exception");
531	>	unexpectedException();
532		}
533		}
534
535	+	/**
536	+	* Calling await without holding lock throws IllegalMonitorStateException
537	+	*/
538		public void testAwait_IllegalMonitor() {
539		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
540		final Condition c = lock.writeLock().newCondition();
541		try {
542		c.await();
543	<	fail("should throw");
543	>	shouldThrow();
544		}
545		catch (IllegalMonitorStateException success) {
546		}
547		catch (Exception ex) {
548	<	fail("should throw IMSE");
548	>	shouldThrow();
549		}
550		}
551
552	+	/**
553	+	* Calling signal without holding lock throws IllegalMonitorStateException
554	+	*/
555		public void testSignal_IllegalMonitor() {
556		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
557		final Condition c = lock.writeLock().newCondition();
558		try {
559		c.signal();
560	<	fail("should throw");
560	>	shouldThrow();
561		}
562		catch (IllegalMonitorStateException success) {
563		}
564		catch (Exception ex) {
565	<	fail("should throw IMSE");
565	>	unexpectedException();
566		}
567		}
568
569	+	/**
570	+	* awaitNanos without a signal times out
571	+	*/
572		public void testAwaitNanos_Timeout() {
573		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
574		final Condition c = lock.writeLock().newCondition();
#	Line 415 | Line 579 | public class ReentrantReadWriteLockTest
579		lock.writeLock().unlock();
580		}
581		catch (Exception ex) {
582	<	fail("unexpected exception");
582	>	unexpectedException();
583		}
584		}
585
586	+
587	+	/**
588	+	*  timed await without a signal times out
589	+	*/
590		public void testAwait_Timeout() {
591		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
592		final Condition c = lock.writeLock().newCondition();
#	Line 428 | Line 596 | public class ReentrantReadWriteLockTest
596		lock.writeLock().unlock();
597		}
598		catch (Exception ex) {
599	<	fail("unexpected exception");
599	>	unexpectedException();
600		}
601		}
602
603	+	/**
604	+	* awaitUntil without a signal times out
605	+	*/
606		public void testAwaitUntil_Timeout() {
607		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
608		final Condition c = lock.writeLock().newCondition();
#	Line 442 | Line 613 | public class ReentrantReadWriteLockTest
613		lock.writeLock().unlock();
614		}
615		catch (Exception ex) {
616	<	fail("unexpected exception");
616	>	unexpectedException();
617		}
618		}
619
620	+	/**
621	+	* await returns when signalled
622	+	*/
623		public void testAwait() {
624		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
625		final Condition c = lock.writeLock().newCondition();
#	Line 457 | Line 631 | public class ReentrantReadWriteLockTest
631		lock.writeLock().unlock();
632		}
633		catch(InterruptedException e) {
634	<	fail("unexpected exception");
634	>	threadUnexpectedException();
635		}
636		}
637		});
#	Line 472 | Line 646 | public class ReentrantReadWriteLockTest
646		assertFalse(t.isAlive());
647		}
648		catch (Exception ex) {
649	<	fail("unexpected exception");
649	>	unexpectedException();
650		}
651		}
652
653	+	/**
654	+	* awaitUninterruptibly doesn't abort on interrupt
655	+	*/
656		public void testAwaitUninterruptibly() {
657		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
658		final Condition c = lock.writeLock().newCondition();
#	Line 494 | Line 671 | public class ReentrantReadWriteLockTest
671		lock.writeLock().lock();
672		c.signal();
673		lock.writeLock().unlock();
674	+	assert(t.isInterrupted());
675		t.join(SHORT_DELAY_MS);
676		assertFalse(t.isAlive());
677		}
678		catch (Exception ex) {
679	<	fail("unexpected exception");
679	>	unexpectedException();
680		}
681		}
682
683	+	/**
684	+	* await is interruptible
685	+	*/
686		public void testAwait_Interrupt() {
687		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
688		final Condition c = lock.writeLock().newCondition();
#	Line 511 | Line 692 | public class ReentrantReadWriteLockTest
692		lock.writeLock().lock();
693		c.await();
694		lock.writeLock().unlock();
695	<	fail("should throw");
695	>	threadShouldThrow();
696		}
697		catch(InterruptedException success) {
698		}
#	Line 526 | Line 707 | public class ReentrantReadWriteLockTest
707		assertFalse(t.isAlive());
708		}
709		catch (Exception ex) {
710	<	fail("unexpected exception");
710	>	unexpectedException();
711		}
712		}
713
714	+	/**
715	+	* awaitNanos is interruptible
716	+	*/
717		public void testAwaitNanos_Interrupt() {
718		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
719		final Condition c = lock.writeLock().newCondition();
#	Line 539 | Line 723 | public class ReentrantReadWriteLockTest
723		lock.writeLock().lock();
724		c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
725		lock.writeLock().unlock();
726	<	fail("should throw");
726	>	threadShouldThrow();
727		}
728		catch(InterruptedException success) {
729		}
#	Line 554 | Line 738 | public class ReentrantReadWriteLockTest
738		assertFalse(t.isAlive());
739		}
740		catch (Exception ex) {
741	<	fail("unexpected exception");
741	>	unexpectedException();
742		}
743		}
744
745	+	/**
746	+	* awaitUntil is interruptible
747	+	*/
748		public void testAwaitUntil_Interrupt() {
749		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
750		final Condition c = lock.writeLock().newCondition();
#	Line 568 | Line 755 | public class ReentrantReadWriteLockTest
755		java.util.Date d = new java.util.Date();
756		c.awaitUntil(new java.util.Date(d.getTime() + 10000));
757		lock.writeLock().unlock();
758	<	fail("should throw");
758	>	threadShouldThrow();
759		}
760		catch(InterruptedException success) {
761		}
#	Line 583 | Line 770 | public class ReentrantReadWriteLockTest
770		assertFalse(t.isAlive());
771		}
772		catch (Exception ex) {
773	<	fail("unexpected exception");
773	>	unexpectedException();
774		}
775		}
776
777	+	/**
778	+	* signalAll wakes up all threads
779	+	*/
780		public void testSignalAll() {
781		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
782		final Condition c = lock.writeLock().newCondition();
#	Line 598 | Line 788 | public class ReentrantReadWriteLockTest
788		lock.writeLock().unlock();
789		}
790		catch(InterruptedException e) {
791	<	fail("unexpected exception");
791	>	threadUnexpectedException();
792		}
793		}
794		});
#	Line 611 | Line 801 | public class ReentrantReadWriteLockTest
801		lock.writeLock().unlock();
802		}
803		catch(InterruptedException e) {
804	<	fail("unexpected exception");
804	>	threadUnexpectedException();
805		}
806		}
807		});
#	Line 629 | Line 819 | public class ReentrantReadWriteLockTest
819		assertFalse(t2.isAlive());
820		}
821		catch (Exception ex) {
822	<	fail("unexpected exception");
822	>	unexpectedException();
823		}
824		}
825
826	+	/**
827	+	* A serialized lock deserializes as unlocked
828	+	*/
829		public void testSerialization() {
830		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
831		l.readLock().lock();
#	Line 651 | Line 844 | public class ReentrantReadWriteLockTest
844		r.readLock().unlock();
845		} catch(Exception e){
846		e.printStackTrace();
847	<	fail("unexpected exception");
847	>	unexpectedException();
848	>	}
849	>	}
850	>
851	>	/**
852	>	* hasQueuedThreads reports whether there are waiting threads
853	>	*/
854	>	public void testhasQueuedThreads() {
855	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
856	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
857	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
858	>	try {
859	>	assertFalse(lock.hasQueuedThreads());
860	>	lock.writeLock().lock();
861	>	t1.start();
862	>	Thread.sleep(SHORT_DELAY_MS);
863	>	assertTrue(lock.hasQueuedThreads());
864	>	t2.start();
865	>	Thread.sleep(SHORT_DELAY_MS);
866	>	assertTrue(lock.hasQueuedThreads());
867	>	t1.interrupt();
868	>	Thread.sleep(SHORT_DELAY_MS);
869	>	assertTrue(lock.hasQueuedThreads());
870	>	lock.writeLock().unlock();
871	>	Thread.sleep(SHORT_DELAY_MS);
872	>	assertFalse(lock.hasQueuedThreads());
873	>	t1.join();
874	>	t2.join();
875	>	} catch(Exception e){
876	>	unexpectedException();
877	>	}
878	>	}
879	>
880	>	/**
881	>	* getQueueLength reports number of waiting threads
882	>	*/
883	>	public void testGetQueueLength() {
884	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
885	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
886	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
887	>	try {
888	>	assertEquals(0, lock.getQueueLength());
889	>	lock.writeLock().lock();
890	>	t1.start();
891	>	Thread.sleep(SHORT_DELAY_MS);
892	>	assertEquals(1, lock.getQueueLength());
893	>	t2.start();
894	>	Thread.sleep(SHORT_DELAY_MS);
895	>	assertEquals(2, lock.getQueueLength());
896	>	t1.interrupt();
897	>	Thread.sleep(SHORT_DELAY_MS);
898	>	assertEquals(1, lock.getQueueLength());
899	>	lock.writeLock().unlock();
900	>	Thread.sleep(SHORT_DELAY_MS);
901	>	assertEquals(0, lock.getQueueLength());
902	>	t1.join();
903	>	t2.join();
904	>	} catch(Exception e){
905	>	unexpectedException();
906	>	}
907	>	}
908	>
909	>	/**
910	>	* getQueuedThreads includes waiting threads
911	>	*/
912	>	public void testGetQueuedThreads() {
913	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
914	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
915	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
916	>	try {
917	>	assertTrue(lock.getQueuedThreads().isEmpty());
918	>	lock.writeLock().lock();
919	>	assertTrue(lock.getQueuedThreads().isEmpty());
920	>	t1.start();
921	>	Thread.sleep(SHORT_DELAY_MS);
922	>	assertTrue(lock.getQueuedThreads().contains(t1));
923	>	t2.start();
924	>	Thread.sleep(SHORT_DELAY_MS);
925	>	assertTrue(lock.getQueuedThreads().contains(t1));
926	>	assertTrue(lock.getQueuedThreads().contains(t2));
927	>	t1.interrupt();
928	>	Thread.sleep(SHORT_DELAY_MS);
929	>	assertFalse(lock.getQueuedThreads().contains(t1));
930	>	assertTrue(lock.getQueuedThreads().contains(t2));
931	>	lock.writeLock().unlock();
932	>	Thread.sleep(SHORT_DELAY_MS);
933	>	assertTrue(lock.getQueuedThreads().isEmpty());
934	>	t1.join();
935	>	t2.join();
936	>	} catch(Exception e){
937	>	unexpectedException();
938	>	}
939	>	}
940	>
941	>	/**
942	>	* hasWaiters throws NPE if null
943	>	*/
944	>	public void testHasWaitersNPE() {
945	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
946	>	try {
947	>	lock.hasWaiters(null);
948	>	shouldThrow();
949	>	} catch (NullPointerException success) {
950	>	} catch (Exception ex) {
951	>	unexpectedException();
952	>	}
953	>	}
954	>
955	>	/**
956	>	* getWaitQueueLength throws NPE if null
957	>	*/
958	>	public void testGetWaitQueueLengthNPE() {
959	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
960	>	try {
961	>	lock.getWaitQueueLength(null);
962	>	shouldThrow();
963	>	} catch (NullPointerException success) {
964	>	} catch (Exception ex) {
965	>	unexpectedException();
966	>	}
967	>	}
968	>
969	>
970	>	/**
971	>	* getWaitingThreads throws NPE if null
972	>	*/
973	>	public void testGetWaitingThreadsNPE() {
974	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
975	>	try {
976	>	lock.getWaitingThreads(null);
977	>	shouldThrow();
978	>	} catch (NullPointerException success) {
979	>	} catch (Exception ex) {
980	>	unexpectedException();
981		}
982		}
983
984	+	/**
985	+	* hasWaiters throws IAE if not owned
986	+	*/
987	+	public void testHasWaitersIAE() {
988	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
989	+	final Condition c = (lock.writeLock().newCondition());
990	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
991	+	try {
992	+	lock2.hasWaiters(c);
993	+	shouldThrow();
994	+	} catch (IllegalArgumentException success) {
995	+	} catch (Exception ex) {
996	+	unexpectedException();
997	+	}
998	+	}
999	+
1000	+	/**
1001	+	* hasWaiters throws IMSE if not locked
1002	+	*/
1003	+	public void testHasWaitersIMSE() {
1004	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1005	+	final Condition c = (lock.writeLock().newCondition());
1006	+	try {
1007	+	lock.hasWaiters(c);
1008	+	shouldThrow();
1009	+	} catch (IllegalMonitorStateException success) {
1010	+	} catch (Exception ex) {
1011	+	unexpectedException();
1012	+	}
1013	+	}
1014	+
1015	+
1016	+	/**
1017	+	* getWaitQueueLength throws IAE if not owned
1018	+	*/
1019	+	public void testGetWaitQueueLengthIAE() {
1020	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1021	+	final Condition c = (lock.writeLock().newCondition());
1022	+	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1023	+	try {
1024	+	lock2.getWaitQueueLength(c);
1025	+	shouldThrow();
1026	+	} catch (IllegalArgumentException success) {
1027	+	} catch (Exception ex) {
1028	+	unexpectedException();
1029	+	}
1030	+	}
1031	+
1032	+	/**
1033	+	* getWaitQueueLength throws IMSE if not locked
1034	+	*/
1035	+	public void testGetWaitQueueLengthIMSE() {
1036	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1037	+	final Condition c = (lock.writeLock().newCondition());
1038	+	try {
1039	+	lock.getWaitQueueLength(c);
1040	+	shouldThrow();
1041	+	} catch (IllegalMonitorStateException success) {
1042	+	} catch (Exception ex) {
1043	+	unexpectedException();
1044	+	}
1045	+	}
1046	+
1047	+
1048	+	/**
1049	+	* getWaitingThreads throws IAE if not owned
1050	+	*/
1051	+	public void testGetWaitingThreadsIAE() {
1052	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1053	+	final Condition c = (lock.writeLock().newCondition());
1054	+	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1055	+	try {
1056	+	lock2.getWaitingThreads(c);
1057	+	shouldThrow();
1058	+	} catch (IllegalArgumentException success) {
1059	+	} catch (Exception ex) {
1060	+	unexpectedException();
1061	+	}
1062	+	}
1063	+
1064	+	/**
1065	+	* getWaitingThreads throws IMSE if not locked
1066	+	*/
1067	+	public void testGetWaitingThreadsIMSE() {
1068	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1069	+	final Condition c = (lock.writeLock().newCondition());
1070	+	try {
1071	+	lock.getWaitingThreads(c);
1072	+	shouldThrow();
1073	+	} catch (IllegalMonitorStateException success) {
1074	+	} catch (Exception ex) {
1075	+	unexpectedException();
1076	+	}
1077	+	}
1078	+
1079	+
1080	+	/**
1081	+	* hasWaiters returns true when a thread is waiting, else false
1082	+	*/
1083	+	public void testHasWaiters() {
1084	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1085	+	final Condition c = (lock.writeLock().newCondition());
1086	+	Thread t = new Thread(new Runnable() {
1087	+	public void run() {
1088	+	try {
1089	+	lock.writeLock().lock();
1090	+	threadAssertFalse(lock.hasWaiters(c));
1091	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1092	+	c.await();
1093	+	lock.writeLock().unlock();
1094	+	}
1095	+	catch(InterruptedException e) {
1096	+	threadUnexpectedException();
1097	+	}
1098	+	}
1099	+	});
1100	+
1101	+	try {
1102	+	t.start();
1103	+	Thread.sleep(SHORT_DELAY_MS);
1104	+	lock.writeLock().lock();
1105	+	assertTrue(lock.hasWaiters(c));
1106	+	assertEquals(1, lock.getWaitQueueLength(c));
1107	+	c.signal();
1108	+	lock.writeLock().unlock();
1109	+	Thread.sleep(SHORT_DELAY_MS);
1110	+	lock.writeLock().lock();
1111	+	assertFalse(lock.hasWaiters(c));
1112	+	assertEquals(0, lock.getWaitQueueLength(c));
1113	+	lock.writeLock().unlock();
1114	+	t.join(SHORT_DELAY_MS);
1115	+	assertFalse(t.isAlive());
1116	+	}
1117	+	catch (Exception ex) {
1118	+	unexpectedException();
1119	+	}
1120	+	}
1121	+
1122	+	/**
1123	+	* getWaitQueueLength returns number of waiting threads
1124	+	*/
1125	+	public void testGetWaitQueueLength() {
1126	+	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1127	+	final Condition c = (lock.writeLock().newCondition());
1128	+	Thread t = new Thread(new Runnable() {
1129	+	public void run() {
1130	+	try {
1131	+	lock.writeLock().lock();
1132	+	threadAssertFalse(lock.hasWaiters(c));
1133	+	threadAssertEquals(0, lock.getWaitQueueLength(c));
1134	+	c.await();
1135	+	lock.writeLock().unlock();
1136	+	}
1137	+	catch(InterruptedException e) {
1138	+	threadUnexpectedException();
1139	+	}
1140	+	}
1141	+	});
1142	+
1143	+	try {
1144	+	t.start();
1145	+	Thread.sleep(SHORT_DELAY_MS);
1146	+	lock.writeLock().lock();
1147	+	assertTrue(lock.hasWaiters(c));
1148	+	assertEquals(1, lock.getWaitQueueLength(c));
1149	+	c.signal();
1150	+	lock.writeLock().unlock();
1151	+	Thread.sleep(SHORT_DELAY_MS);
1152	+	lock.writeLock().lock();
1153	+	assertFalse(lock.hasWaiters(c));
1154	+	assertEquals(0, lock.getWaitQueueLength(c));
1155	+	lock.writeLock().unlock();
1156	+	t.join(SHORT_DELAY_MS);
1157	+	assertFalse(t.isAlive());
1158	+	}
1159	+	catch (Exception ex) {
1160	+	unexpectedException();
1161	+	}
1162	+	}
1163	+
1164	+
1165	+	/**
1166	+	* getWaitingThreads returns only and all waiting threads
1167	+	*/
1168	+	public void testGetWaitingThreads() {
1169	+	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1170	+	final Condition c = lock.writeLock().newCondition();
1171	+	Thread t1 = new Thread(new Runnable() {
1172	+	public void run() {
1173	+	try {
1174	+	lock.writeLock().lock();
1175	+	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1176	+	c.await();
1177	+	lock.writeLock().unlock();
1178	+	}
1179	+	catch(InterruptedException e) {
1180	+	threadUnexpectedException();
1181	+	}
1182	+	}
1183	+	});
1184	+
1185	+	Thread t2 = new Thread(new Runnable() {
1186	+	public void run() {
1187	+	try {
1188	+	lock.writeLock().lock();
1189	+	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1190	+	c.await();
1191	+	lock.writeLock().unlock();
1192	+	}
1193	+	catch(InterruptedException e) {
1194	+	threadUnexpectedException();
1195	+	}
1196	+	}
1197	+	});
1198	+
1199	+	try {
1200	+	lock.writeLock().lock();
1201	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1202	+	lock.writeLock().unlock();
1203	+	t1.start();
1204	+	Thread.sleep(SHORT_DELAY_MS);
1205	+	t2.start();
1206	+	Thread.sleep(SHORT_DELAY_MS);
1207	+	lock.writeLock().lock();
1208	+	assertTrue(lock.hasWaiters(c));
1209	+	assertTrue(lock.getWaitingThreads(c).contains(t1));
1210	+	assertTrue(lock.getWaitingThreads(c).contains(t2));
1211	+	c.signalAll();
1212	+	lock.writeLock().unlock();
1213	+	Thread.sleep(SHORT_DELAY_MS);
1214	+	lock.writeLock().lock();
1215	+	assertFalse(lock.hasWaiters(c));
1216	+	assertTrue(lock.getWaitingThreads(c).isEmpty());
1217	+	lock.writeLock().unlock();
1218	+	t1.join(SHORT_DELAY_MS);
1219	+	t2.join(SHORT_DELAY_MS);
1220	+	assertFalse(t1.isAlive());
1221	+	assertFalse(t2.isAlive());
1222	+	}
1223	+	catch (Exception ex) {
1224	+	unexpectedException();
1225	+	}
1226	+	}
1227
1228		}

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