1 |
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/* |
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 |
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*/ |
8 |
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|
9 |
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import junit.framework.*; |
57 |
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public Collection<Thread> getQueuedThreads() { |
58 |
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return super.getQueuedThreads(); |
59 |
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} |
60 |
< |
public PublicCondition newCondition() { |
61 |
< |
return new PublicCondition(this); |
60 |
> |
public Collection<Thread> getWaitingThreads(Condition c) { |
61 |
> |
return super.getWaitingThreads(c); |
62 |
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} |
62 |
– |
|
63 |
– |
static class PublicCondition extends AbstractReentrantLock.ConditionObject { |
64 |
– |
PublicCondition(PublicReentrantReadWriteLock l) { super(l); } |
65 |
– |
public Collection<Thread> getWaitingThreads() { |
66 |
– |
return super.getWaitingThreads(); |
67 |
– |
} |
68 |
– |
} |
69 |
– |
|
63 |
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} |
64 |
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|
65 |
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/** |
69 |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
70 |
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assertFalse(rl.isFair()); |
71 |
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assertFalse(rl.isWriteLocked()); |
72 |
< |
assertEquals(0, rl.getReadLocks()); |
72 |
> |
assertEquals(0, rl.getReadLockCount()); |
73 |
|
ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
74 |
|
assertTrue(r2.isFair()); |
75 |
|
assertFalse(r2.isWriteLocked()); |
76 |
< |
assertEquals(0, r2.getReadLocks()); |
76 |
> |
assertEquals(0, r2.getReadLockCount()); |
77 |
|
} |
78 |
|
|
79 |
|
/** |
84 |
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rl.writeLock().lock(); |
85 |
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assertTrue(rl.isWriteLocked()); |
86 |
|
assertTrue(rl.isWriteLockedByCurrentThread()); |
87 |
< |
assertEquals(0, rl.getReadLocks()); |
87 |
> |
assertEquals(0, rl.getReadLockCount()); |
88 |
|
rl.writeLock().unlock(); |
89 |
|
assertFalse(rl.isWriteLocked()); |
90 |
|
assertFalse(rl.isWriteLockedByCurrentThread()); |
91 |
< |
assertEquals(0, rl.getReadLocks()); |
91 |
> |
assertEquals(0, rl.getReadLockCount()); |
92 |
|
rl.readLock().lock(); |
93 |
|
assertFalse(rl.isWriteLocked()); |
94 |
|
assertFalse(rl.isWriteLockedByCurrentThread()); |
95 |
< |
assertEquals(1, rl.getReadLocks()); |
95 |
> |
assertEquals(1, rl.getReadLockCount()); |
96 |
|
rl.readLock().unlock(); |
97 |
|
assertFalse(rl.isWriteLocked()); |
98 |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
99 |
< |
assertEquals(0, rl.getReadLocks()); |
99 |
> |
assertEquals(0, rl.getReadLockCount()); |
100 |
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} |
101 |
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|
102 |
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|
108 |
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rl.writeLock().lock(); |
109 |
|
assertTrue(rl.isWriteLocked()); |
110 |
|
assertTrue(rl.isWriteLockedByCurrentThread()); |
111 |
< |
assertEquals(0, rl.getReadLocks()); |
111 |
> |
assertEquals(0, rl.getReadLockCount()); |
112 |
|
rl.writeLock().unlock(); |
113 |
|
assertFalse(rl.isWriteLocked()); |
114 |
|
assertFalse(rl.isWriteLockedByCurrentThread()); |
115 |
< |
assertEquals(0, rl.getReadLocks()); |
115 |
> |
assertEquals(0, rl.getReadLockCount()); |
116 |
|
rl.readLock().lock(); |
117 |
|
assertFalse(rl.isWriteLocked()); |
118 |
|
assertFalse(rl.isWriteLockedByCurrentThread()); |
119 |
< |
assertEquals(1, rl.getReadLocks()); |
119 |
> |
assertEquals(1, rl.getReadLockCount()); |
120 |
|
rl.readLock().unlock(); |
121 |
|
assertFalse(rl.isWriteLocked()); |
122 |
|
assertFalse(rl.isWriteLockedByCurrentThread()); |
123 |
< |
assertEquals(0, rl.getReadLocks()); |
123 |
> |
assertEquals(0, rl.getReadLockCount()); |
124 |
|
} |
125 |
|
|
126 |
|
/** |
156 |
|
*/ |
157 |
|
public void testWriteLockInterruptibly_Interrupted() { |
158 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
166 |
– |
lock.writeLock().lock(); |
159 |
|
Thread t = new Thread(new Runnable() { |
160 |
|
public void run() { |
161 |
|
try { |
162 |
|
lock.writeLock().lockInterruptibly(); |
163 |
< |
threadShouldThrow(); |
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(); |
178 |
|
} |
179 |
|
|
180 |
|
/** |
181 |
< |
* timed write-trylock is interruptible |
181 |
> |
* timed write-tryLock is interruptible |
182 |
|
*/ |
183 |
|
public void testWriteTryLock_Interrupted() { |
184 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
187 |
|
public void run() { |
188 |
|
try { |
189 |
|
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
195 |
– |
threadShouldThrow(); |
190 |
|
} catch(InterruptedException success){} |
191 |
|
} |
192 |
|
}); |
210 |
|
public void run() { |
211 |
|
try { |
212 |
|
lock.readLock().lockInterruptibly(); |
219 |
– |
threadShouldThrow(); |
213 |
|
} catch(InterruptedException success){} |
214 |
|
} |
215 |
|
}); |
224 |
|
} |
225 |
|
|
226 |
|
/** |
227 |
< |
* timed read-trylock is interruptible |
227 |
> |
* timed read-tryLock is interruptible |
228 |
|
*/ |
229 |
|
public void testReadTryLock_Interrupted() { |
230 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
248 |
|
|
249 |
|
|
250 |
|
/** |
251 |
< |
* write-trylock fails if locked |
251 |
> |
* write-tryLock fails if locked |
252 |
|
*/ |
253 |
|
public void testWriteTryLockWhenLocked() { |
254 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
268 |
|
} |
269 |
|
|
270 |
|
/** |
271 |
< |
* read-trylock fails if locked |
271 |
> |
* read-tryLock fails if locked |
272 |
|
*/ |
273 |
|
public void testReadTryLockWhenLocked() { |
274 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
376 |
|
} |
377 |
|
} |
378 |
|
|
379 |
+ |
/** |
380 |
+ |
* Read trylock succeeds if write locked by current thread |
381 |
+ |
*/ |
382 |
+ |
public void testReadHoldingWriteLock() { |
383 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
384 |
+ |
lock.writeLock().lock(); |
385 |
+ |
assertTrue(lock.readLock().tryLock()); |
386 |
+ |
lock.readLock().unlock(); |
387 |
+ |
lock.writeLock().unlock(); |
388 |
+ |
} |
389 |
+ |
|
390 |
+ |
/** |
391 |
+ |
* Read lock succeeds if write locked by current thread even if |
392 |
+ |
* other threads are waiting |
393 |
+ |
*/ |
394 |
+ |
public void testReadHoldingWriteLock2() { |
395 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
396 |
+ |
lock.writeLock().lock(); |
397 |
+ |
Thread t1 = new Thread(new Runnable() { |
398 |
+ |
public void run() { |
399 |
+ |
lock.readLock().lock(); |
400 |
+ |
lock.readLock().unlock(); |
401 |
+ |
} |
402 |
+ |
}); |
403 |
+ |
Thread t2 = new Thread(new Runnable() { |
404 |
+ |
public void run() { |
405 |
+ |
lock.readLock().lock(); |
406 |
+ |
lock.readLock().unlock(); |
407 |
+ |
} |
408 |
+ |
}); |
409 |
+ |
|
410 |
+ |
try { |
411 |
+ |
t1.start(); |
412 |
+ |
t2.start(); |
413 |
+ |
lock.readLock().lock(); |
414 |
+ |
lock.readLock().unlock(); |
415 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
416 |
+ |
lock.readLock().lock(); |
417 |
+ |
lock.readLock().unlock(); |
418 |
+ |
lock.writeLock().unlock(); |
419 |
+ |
t1.join(MEDIUM_DELAY_MS); |
420 |
+ |
t2.join(MEDIUM_DELAY_MS); |
421 |
+ |
assertTrue(!t1.isAlive()); |
422 |
+ |
assertTrue(!t2.isAlive()); |
423 |
+ |
|
424 |
+ |
} catch(Exception e){ |
425 |
+ |
unexpectedException(); |
426 |
+ |
} |
427 |
+ |
} |
428 |
+ |
|
429 |
+ |
/** |
430 |
+ |
* Fair Read trylock succeeds if write locked by current thread |
431 |
+ |
*/ |
432 |
+ |
public void testReadHoldingWriteLockFair() { |
433 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
434 |
+ |
lock.writeLock().lock(); |
435 |
+ |
assertTrue(lock.readLock().tryLock()); |
436 |
+ |
lock.readLock().unlock(); |
437 |
+ |
lock.writeLock().unlock(); |
438 |
+ |
} |
439 |
+ |
|
440 |
+ |
/** |
441 |
+ |
* Fair Read lock succeeds if write locked by current thread even if |
442 |
+ |
* other threads are waiting |
443 |
+ |
*/ |
444 |
+ |
public void testReadHoldingWriteLockFair2() { |
445 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
446 |
+ |
lock.writeLock().lock(); |
447 |
+ |
Thread t1 = new Thread(new Runnable() { |
448 |
+ |
public void run() { |
449 |
+ |
lock.readLock().lock(); |
450 |
+ |
lock.readLock().unlock(); |
451 |
+ |
} |
452 |
+ |
}); |
453 |
+ |
Thread t2 = new Thread(new Runnable() { |
454 |
+ |
public void run() { |
455 |
+ |
lock.readLock().lock(); |
456 |
+ |
lock.readLock().unlock(); |
457 |
+ |
} |
458 |
+ |
}); |
459 |
+ |
|
460 |
+ |
try { |
461 |
+ |
t1.start(); |
462 |
+ |
t2.start(); |
463 |
+ |
lock.readLock().lock(); |
464 |
+ |
lock.readLock().unlock(); |
465 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
466 |
+ |
lock.readLock().lock(); |
467 |
+ |
lock.readLock().unlock(); |
468 |
+ |
lock.writeLock().unlock(); |
469 |
+ |
t1.join(MEDIUM_DELAY_MS); |
470 |
+ |
t2.join(MEDIUM_DELAY_MS); |
471 |
+ |
assertTrue(!t1.isAlive()); |
472 |
+ |
assertTrue(!t2.isAlive()); |
473 |
+ |
|
474 |
+ |
} catch(Exception e){ |
475 |
+ |
unexpectedException(); |
476 |
+ |
} |
477 |
+ |
} |
478 |
+ |
|
479 |
|
|
480 |
|
/** |
481 |
< |
* Read trylock succeeds if readlocked but not writelocked |
481 |
> |
* Read tryLock succeeds if readlocked but not writelocked |
482 |
|
*/ |
483 |
|
public void testTryLockWhenReadLocked() { |
484 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
501 |
|
|
502 |
|
|
503 |
|
/** |
504 |
< |
* write trylock fails when readlocked |
504 |
> |
* write tryLock fails when readlocked |
505 |
|
*/ |
506 |
|
public void testWriteTryLockWhenReadLocked() { |
507 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
523 |
|
|
524 |
|
|
525 |
|
/** |
526 |
< |
* write timed trylock times out if locked |
526 |
> |
* write timed tryLock times out if locked |
527 |
|
*/ |
528 |
|
public void testWriteTryLock_Timeout() { |
529 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
547 |
|
} |
548 |
|
|
549 |
|
/** |
550 |
< |
* read timed trylock times out if write-locked |
550 |
> |
* read timed tryLock times out if write-locked |
551 |
|
*/ |
552 |
|
public void testReadTryLock_Timeout() { |
553 |
|
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
691 |
|
final Condition c = lock.writeLock().newCondition(); |
692 |
|
try { |
693 |
|
lock.writeLock().lock(); |
601 |
– |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
694 |
|
lock.writeLock().unlock(); |
695 |
|
} |
696 |
|
catch (Exception ex) { |
707 |
|
try { |
708 |
|
lock.writeLock().lock(); |
709 |
|
java.util.Date d = new java.util.Date(); |
618 |
– |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
710 |
|
lock.writeLock().unlock(); |
711 |
|
} |
712 |
|
catch (Exception ex) { |
747 |
|
} |
748 |
|
} |
749 |
|
|
750 |
+ |
/** A helper class for uninterruptible wait tests */ |
751 |
+ |
class UninterruptableThread extends Thread { |
752 |
+ |
private Lock lock; |
753 |
+ |
private Condition c; |
754 |
+ |
|
755 |
+ |
public volatile boolean canAwake = false; |
756 |
+ |
public volatile boolean interrupted = false; |
757 |
+ |
public volatile boolean lockStarted = false; |
758 |
+ |
|
759 |
+ |
public UninterruptableThread(Lock lock, Condition c) { |
760 |
+ |
this.lock = lock; |
761 |
+ |
this.c = c; |
762 |
+ |
} |
763 |
+ |
|
764 |
+ |
public synchronized void run() { |
765 |
+ |
lock.lock(); |
766 |
+ |
lockStarted = true; |
767 |
+ |
|
768 |
+ |
while (!canAwake) { |
769 |
+ |
c.awaitUninterruptibly(); |
770 |
+ |
} |
771 |
+ |
|
772 |
+ |
interrupted = isInterrupted(); |
773 |
+ |
lock.unlock(); |
774 |
+ |
} |
775 |
+ |
} |
776 |
+ |
|
777 |
|
/** |
778 |
|
* awaitUninterruptibly doesn't abort on interrupt |
779 |
|
*/ |
780 |
|
public void testAwaitUninterruptibly() { |
781 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
781 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
782 |
|
final Condition c = lock.writeLock().newCondition(); |
783 |
< |
Thread t = new Thread(new Runnable() { |
666 |
< |
public void run() { |
667 |
< |
lock.writeLock().lock(); |
668 |
< |
c.awaitUninterruptibly(); |
669 |
< |
lock.writeLock().unlock(); |
670 |
< |
} |
671 |
< |
}); |
783 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
784 |
|
|
785 |
|
try { |
786 |
< |
t.start(); |
787 |
< |
Thread.sleep(SHORT_DELAY_MS); |
788 |
< |
t.interrupt(); |
786 |
> |
thread.start(); |
787 |
> |
|
788 |
> |
while (!thread.lockStarted) { |
789 |
> |
Thread.sleep(100); |
790 |
> |
} |
791 |
> |
|
792 |
|
lock.writeLock().lock(); |
793 |
< |
c.signal(); |
794 |
< |
lock.writeLock().unlock(); |
795 |
< |
assert(t.isInterrupted()); |
796 |
< |
t.join(SHORT_DELAY_MS); |
797 |
< |
assertFalse(t.isAlive()); |
798 |
< |
} |
799 |
< |
catch (Exception ex) { |
793 |
> |
try { |
794 |
> |
thread.interrupt(); |
795 |
> |
thread.canAwake = true; |
796 |
> |
c.signal(); |
797 |
> |
} finally { |
798 |
> |
lock.writeLock().unlock(); |
799 |
> |
} |
800 |
> |
|
801 |
> |
thread.join(); |
802 |
> |
assertTrue(thread.interrupted); |
803 |
> |
assertFalse(thread.isAlive()); |
804 |
> |
} catch (Exception ex) { |
805 |
|
unexpectedException(); |
806 |
|
} |
807 |
|
} |
975 |
|
} |
976 |
|
|
977 |
|
/** |
978 |
+ |
* hasQueuedThreads reports whether there are waiting threads |
979 |
+ |
*/ |
980 |
+ |
public void testhasQueuedThreads() { |
981 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
982 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
983 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
984 |
+ |
try { |
985 |
+ |
assertFalse(lock.hasQueuedThreads()); |
986 |
+ |
lock.writeLock().lock(); |
987 |
+ |
t1.start(); |
988 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
989 |
+ |
assertTrue(lock.hasQueuedThreads()); |
990 |
+ |
t2.start(); |
991 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
992 |
+ |
assertTrue(lock.hasQueuedThreads()); |
993 |
+ |
t1.interrupt(); |
994 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
995 |
+ |
assertTrue(lock.hasQueuedThreads()); |
996 |
+ |
lock.writeLock().unlock(); |
997 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
998 |
+ |
assertFalse(lock.hasQueuedThreads()); |
999 |
+ |
t1.join(); |
1000 |
+ |
t2.join(); |
1001 |
+ |
} catch(Exception e){ |
1002 |
+ |
unexpectedException(); |
1003 |
+ |
} |
1004 |
+ |
} |
1005 |
+ |
|
1006 |
+ |
/** |
1007 |
+ |
* hasQueuedThread(null) throws NPE |
1008 |
+ |
*/ |
1009 |
+ |
public void testHasQueuedThreadNPE() { |
1010 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1011 |
+ |
try { |
1012 |
+ |
sync.hasQueuedThread(null); |
1013 |
+ |
shouldThrow(); |
1014 |
+ |
} catch (NullPointerException success) { |
1015 |
+ |
} |
1016 |
+ |
} |
1017 |
+ |
|
1018 |
+ |
/** |
1019 |
+ |
* hasQueuedThread reports whether a thread is queued. |
1020 |
+ |
*/ |
1021 |
+ |
public void testHasQueuedThread() { |
1022 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1023 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
1024 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
1025 |
+ |
try { |
1026 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1027 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1028 |
+ |
sync.writeLock().lock(); |
1029 |
+ |
t1.start(); |
1030 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1031 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1032 |
+ |
t2.start(); |
1033 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1034 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1035 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1036 |
+ |
t1.interrupt(); |
1037 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1038 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1039 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1040 |
+ |
sync.writeLock().unlock(); |
1041 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1042 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1043 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1044 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1045 |
+ |
t1.join(); |
1046 |
+ |
t2.join(); |
1047 |
+ |
} catch(Exception e){ |
1048 |
+ |
unexpectedException(); |
1049 |
+ |
} |
1050 |
+ |
} |
1051 |
+ |
|
1052 |
+ |
|
1053 |
+ |
/** |
1054 |
|
* getQueueLength reports number of waiting threads |
1055 |
|
*/ |
1056 |
|
public void testGetQueueLength() { |
1112 |
|
} |
1113 |
|
|
1114 |
|
/** |
1115 |
+ |
* hasWaiters throws NPE if null |
1116 |
+ |
*/ |
1117 |
+ |
public void testHasWaitersNPE() { |
1118 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1119 |
+ |
try { |
1120 |
+ |
lock.hasWaiters(null); |
1121 |
+ |
shouldThrow(); |
1122 |
+ |
} catch (NullPointerException success) { |
1123 |
+ |
} catch (Exception ex) { |
1124 |
+ |
unexpectedException(); |
1125 |
+ |
} |
1126 |
+ |
} |
1127 |
+ |
|
1128 |
+ |
/** |
1129 |
+ |
* getWaitQueueLength throws NPE if null |
1130 |
+ |
*/ |
1131 |
+ |
public void testGetWaitQueueLengthNPE() { |
1132 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1133 |
+ |
try { |
1134 |
+ |
lock.getWaitQueueLength(null); |
1135 |
+ |
shouldThrow(); |
1136 |
+ |
} catch (NullPointerException success) { |
1137 |
+ |
} catch (Exception ex) { |
1138 |
+ |
unexpectedException(); |
1139 |
+ |
} |
1140 |
+ |
} |
1141 |
+ |
|
1142 |
+ |
|
1143 |
+ |
/** |
1144 |
+ |
* getWaitingThreads throws NPE if null |
1145 |
+ |
*/ |
1146 |
+ |
public void testGetWaitingThreadsNPE() { |
1147 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1148 |
+ |
try { |
1149 |
+ |
lock.getWaitingThreads(null); |
1150 |
+ |
shouldThrow(); |
1151 |
+ |
} catch (NullPointerException success) { |
1152 |
+ |
} catch (Exception ex) { |
1153 |
+ |
unexpectedException(); |
1154 |
+ |
} |
1155 |
+ |
} |
1156 |
+ |
|
1157 |
+ |
/** |
1158 |
+ |
* hasWaiters throws IAE if not owned |
1159 |
+ |
*/ |
1160 |
+ |
public void testHasWaitersIAE() { |
1161 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1162 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1163 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1164 |
+ |
try { |
1165 |
+ |
lock2.hasWaiters(c); |
1166 |
+ |
shouldThrow(); |
1167 |
+ |
} catch (IllegalArgumentException success) { |
1168 |
+ |
} catch (Exception ex) { |
1169 |
+ |
unexpectedException(); |
1170 |
+ |
} |
1171 |
+ |
} |
1172 |
+ |
|
1173 |
+ |
/** |
1174 |
+ |
* hasWaiters throws IMSE if not locked |
1175 |
+ |
*/ |
1176 |
+ |
public void testHasWaitersIMSE() { |
1177 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1178 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1179 |
+ |
try { |
1180 |
+ |
lock.hasWaiters(c); |
1181 |
+ |
shouldThrow(); |
1182 |
+ |
} catch (IllegalMonitorStateException success) { |
1183 |
+ |
} catch (Exception ex) { |
1184 |
+ |
unexpectedException(); |
1185 |
+ |
} |
1186 |
+ |
} |
1187 |
+ |
|
1188 |
+ |
|
1189 |
+ |
/** |
1190 |
+ |
* getWaitQueueLength throws IAE if not owned |
1191 |
+ |
*/ |
1192 |
+ |
public void testGetWaitQueueLengthIAE() { |
1193 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1194 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1195 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1196 |
+ |
try { |
1197 |
+ |
lock2.getWaitQueueLength(c); |
1198 |
+ |
shouldThrow(); |
1199 |
+ |
} catch (IllegalArgumentException success) { |
1200 |
+ |
} catch (Exception ex) { |
1201 |
+ |
unexpectedException(); |
1202 |
+ |
} |
1203 |
+ |
} |
1204 |
+ |
|
1205 |
+ |
/** |
1206 |
+ |
* getWaitQueueLength throws IMSE if not locked |
1207 |
+ |
*/ |
1208 |
+ |
public void testGetWaitQueueLengthIMSE() { |
1209 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1210 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1211 |
+ |
try { |
1212 |
+ |
lock.getWaitQueueLength(c); |
1213 |
+ |
shouldThrow(); |
1214 |
+ |
} catch (IllegalMonitorStateException success) { |
1215 |
+ |
} catch (Exception ex) { |
1216 |
+ |
unexpectedException(); |
1217 |
+ |
} |
1218 |
+ |
} |
1219 |
+ |
|
1220 |
+ |
|
1221 |
+ |
/** |
1222 |
+ |
* getWaitingThreads throws IAE if not owned |
1223 |
+ |
*/ |
1224 |
+ |
public void testGetWaitingThreadsIAE() { |
1225 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1226 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1227 |
+ |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1228 |
+ |
try { |
1229 |
+ |
lock2.getWaitingThreads(c); |
1230 |
+ |
shouldThrow(); |
1231 |
+ |
} catch (IllegalArgumentException success) { |
1232 |
+ |
} catch (Exception ex) { |
1233 |
+ |
unexpectedException(); |
1234 |
+ |
} |
1235 |
+ |
} |
1236 |
+ |
|
1237 |
+ |
/** |
1238 |
+ |
* getWaitingThreads throws IMSE if not locked |
1239 |
+ |
*/ |
1240 |
+ |
public void testGetWaitingThreadsIMSE() { |
1241 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1242 |
+ |
final Condition c = (lock.writeLock().newCondition()); |
1243 |
+ |
try { |
1244 |
+ |
lock.getWaitingThreads(c); |
1245 |
+ |
shouldThrow(); |
1246 |
+ |
} catch (IllegalMonitorStateException success) { |
1247 |
+ |
} catch (Exception ex) { |
1248 |
+ |
unexpectedException(); |
1249 |
+ |
} |
1250 |
+ |
} |
1251 |
+ |
|
1252 |
+ |
|
1253 |
+ |
/** |
1254 |
|
* hasWaiters returns true when a thread is waiting, else false |
1255 |
|
*/ |
1256 |
|
public void testHasWaiters() { |
1257 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1258 |
< |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
1257 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1258 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1259 |
|
Thread t = new Thread(new Runnable() { |
1260 |
|
public void run() { |
1261 |
|
try { |
1262 |
|
lock.writeLock().lock(); |
1263 |
< |
threadAssertFalse(c.hasWaiters()); |
1264 |
< |
threadAssertEquals(0, c.getWaitQueueLength()); |
1263 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
1264 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1265 |
|
c.await(); |
1266 |
|
lock.writeLock().unlock(); |
1267 |
|
} |
1275 |
|
t.start(); |
1276 |
|
Thread.sleep(SHORT_DELAY_MS); |
1277 |
|
lock.writeLock().lock(); |
1278 |
< |
assertTrue(c.hasWaiters()); |
1279 |
< |
assertEquals(1, c.getWaitQueueLength()); |
1278 |
> |
assertTrue(lock.hasWaiters(c)); |
1279 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1280 |
|
c.signal(); |
1281 |
|
lock.writeLock().unlock(); |
1282 |
|
Thread.sleep(SHORT_DELAY_MS); |
1283 |
|
lock.writeLock().lock(); |
1284 |
< |
assertFalse(c.hasWaiters()); |
1285 |
< |
assertEquals(0, c.getWaitQueueLength()); |
1284 |
> |
assertFalse(lock.hasWaiters(c)); |
1285 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1286 |
|
lock.writeLock().unlock(); |
1287 |
|
t.join(SHORT_DELAY_MS); |
1288 |
|
assertFalse(t.isAlive()); |
1296 |
|
* getWaitQueueLength returns number of waiting threads |
1297 |
|
*/ |
1298 |
|
public void testGetWaitQueueLength() { |
1299 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1300 |
< |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
1301 |
< |
Thread t1 = new Thread(new Runnable() { |
967 |
< |
public void run() { |
968 |
< |
try { |
969 |
< |
lock.writeLock().lock(); |
970 |
< |
threadAssertFalse(c.hasWaiters()); |
971 |
< |
threadAssertEquals(0, c.getWaitQueueLength()); |
972 |
< |
c.await(); |
973 |
< |
lock.writeLock().unlock(); |
974 |
< |
} |
975 |
< |
catch(InterruptedException e) { |
976 |
< |
threadUnexpectedException(); |
977 |
< |
} |
978 |
< |
} |
979 |
< |
}); |
980 |
< |
|
981 |
< |
Thread t2 = new Thread(new Runnable() { |
1299 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1300 |
> |
final Condition c = (lock.writeLock().newCondition()); |
1301 |
> |
Thread t = new Thread(new Runnable() { |
1302 |
|
public void run() { |
1303 |
|
try { |
1304 |
|
lock.writeLock().lock(); |
1305 |
< |
threadAssertTrue(c.hasWaiters()); |
1306 |
< |
threadAssertEquals(1, c.getWaitQueueLength()); |
1305 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
1306 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1307 |
|
c.await(); |
1308 |
|
lock.writeLock().unlock(); |
1309 |
|
} |
1314 |
|
}); |
1315 |
|
|
1316 |
|
try { |
1317 |
< |
t1.start(); |
998 |
< |
Thread.sleep(SHORT_DELAY_MS); |
999 |
< |
t2.start(); |
1317 |
> |
t.start(); |
1318 |
|
Thread.sleep(SHORT_DELAY_MS); |
1319 |
|
lock.writeLock().lock(); |
1320 |
< |
assertTrue(c.hasWaiters()); |
1321 |
< |
assertEquals(2, c.getWaitQueueLength()); |
1322 |
< |
c.signalAll(); |
1320 |
> |
assertTrue(lock.hasWaiters(c)); |
1321 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1322 |
> |
c.signal(); |
1323 |
|
lock.writeLock().unlock(); |
1324 |
|
Thread.sleep(SHORT_DELAY_MS); |
1325 |
|
lock.writeLock().lock(); |
1326 |
< |
assertFalse(c.hasWaiters()); |
1327 |
< |
assertEquals(0, c.getWaitQueueLength()); |
1326 |
> |
assertFalse(lock.hasWaiters(c)); |
1327 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1328 |
|
lock.writeLock().unlock(); |
1329 |
< |
t1.join(SHORT_DELAY_MS); |
1330 |
< |
t2.join(SHORT_DELAY_MS); |
1013 |
< |
assertFalse(t1.isAlive()); |
1014 |
< |
assertFalse(t2.isAlive()); |
1329 |
> |
t.join(SHORT_DELAY_MS); |
1330 |
> |
assertFalse(t.isAlive()); |
1331 |
|
} |
1332 |
|
catch (Exception ex) { |
1333 |
|
unexpectedException(); |
1334 |
|
} |
1335 |
|
} |
1336 |
|
|
1337 |
+ |
|
1338 |
|
/** |
1339 |
|
* getWaitingThreads returns only and all waiting threads |
1340 |
|
*/ |
1341 |
|
public void testGetWaitingThreads() { |
1342 |
|
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1343 |
< |
final PublicReentrantReadWriteLock.PublicCondition c = (PublicReentrantReadWriteLock.PublicCondition)lock.newCondition(); |
1343 |
> |
final Condition c = lock.writeLock().newCondition(); |
1344 |
|
Thread t1 = new Thread(new Runnable() { |
1345 |
|
public void run() { |
1346 |
|
try { |
1347 |
|
lock.writeLock().lock(); |
1348 |
< |
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
1348 |
> |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
1349 |
|
c.await(); |
1350 |
|
lock.writeLock().unlock(); |
1351 |
|
} |
1359 |
|
public void run() { |
1360 |
|
try { |
1361 |
|
lock.writeLock().lock(); |
1362 |
< |
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
1362 |
> |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
1363 |
|
c.await(); |
1364 |
|
lock.writeLock().unlock(); |
1365 |
|
} |
1371 |
|
|
1372 |
|
try { |
1373 |
|
lock.writeLock().lock(); |
1374 |
< |
assertTrue(c.getWaitingThreads().isEmpty()); |
1374 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1375 |
|
lock.writeLock().unlock(); |
1376 |
|
t1.start(); |
1377 |
|
Thread.sleep(SHORT_DELAY_MS); |
1378 |
|
t2.start(); |
1379 |
|
Thread.sleep(SHORT_DELAY_MS); |
1380 |
|
lock.writeLock().lock(); |
1381 |
< |
assertTrue(c.hasWaiters()); |
1382 |
< |
assertTrue(c.getWaitingThreads().contains(t1)); |
1383 |
< |
assertTrue(c.getWaitingThreads().contains(t2)); |
1381 |
> |
assertTrue(lock.hasWaiters(c)); |
1382 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1383 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1384 |
|
c.signalAll(); |
1385 |
|
lock.writeLock().unlock(); |
1386 |
|
Thread.sleep(SHORT_DELAY_MS); |
1387 |
|
lock.writeLock().lock(); |
1388 |
< |
assertFalse(c.hasWaiters()); |
1389 |
< |
assertTrue(c.getWaitingThreads().isEmpty()); |
1388 |
> |
assertFalse(lock.hasWaiters(c)); |
1389 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1390 |
|
lock.writeLock().unlock(); |
1391 |
|
t1.join(SHORT_DELAY_MS); |
1392 |
|
t2.join(SHORT_DELAY_MS); |
1398 |
|
} |
1399 |
|
} |
1400 |
|
|
1401 |
+ |
/** |
1402 |
+ |
* toString indicates current lock state |
1403 |
+ |
*/ |
1404 |
+ |
public void testToString() { |
1405 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1406 |
+ |
String us = lock.toString(); |
1407 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1408 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1409 |
+ |
lock.writeLock().lock(); |
1410 |
+ |
String ws = lock.toString(); |
1411 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1412 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1413 |
+ |
lock.writeLock().unlock(); |
1414 |
+ |
lock.readLock().lock(); |
1415 |
+ |
lock.readLock().lock(); |
1416 |
+ |
String rs = lock.toString(); |
1417 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1418 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1419 |
+ |
} |
1420 |
+ |
|
1421 |
+ |
/** |
1422 |
+ |
* readLock.toString indicates current lock state |
1423 |
+ |
*/ |
1424 |
+ |
public void testReadLockToString() { |
1425 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1426 |
+ |
String us = lock.readLock().toString(); |
1427 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1428 |
+ |
lock.readLock().lock(); |
1429 |
+ |
lock.readLock().lock(); |
1430 |
+ |
String rs = lock.readLock().toString(); |
1431 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1432 |
+ |
} |
1433 |
+ |
|
1434 |
+ |
/** |
1435 |
+ |
* writeLock.toString indicates current lock state |
1436 |
+ |
*/ |
1437 |
+ |
public void testWriteLockToString() { |
1438 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1439 |
+ |
String us = lock.writeLock().toString(); |
1440 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1441 |
+ |
lock.writeLock().lock(); |
1442 |
+ |
String ls = lock.writeLock().toString(); |
1443 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1444 |
+ |
} |
1445 |
+ |
|
1446 |
|
} |