126 |
|
/** |
127 |
|
* getWriteHoldCount returns number of recursive holds |
128 |
|
*/ |
129 |
< |
public void testGetHoldCount() { |
129 |
> |
public void testGetWriteHoldCount() { |
130 |
|
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
131 |
|
for(int i = 1; i <= SIZE; i++) { |
132 |
|
lock.writeLock().lock(); |
137 |
|
assertEquals(i-1,lock.getWriteHoldCount()); |
138 |
|
} |
139 |
|
} |
140 |
+ |
|
141 |
+ |
/** |
142 |
+ |
* getReadHoldCount returns number of recursive holds |
143 |
+ |
*/ |
144 |
+ |
public void testGetReadHoldCount() { |
145 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
146 |
+ |
for(int i = 1; i <= SIZE; i++) { |
147 |
+ |
lock.readLock().lock(); |
148 |
+ |
assertEquals(i,lock.getReadHoldCount()); |
149 |
+ |
} |
150 |
+ |
for(int i = SIZE; i > 0; i--) { |
151 |
+ |
lock.readLock().unlock(); |
152 |
+ |
assertEquals(i-1,lock.getReadHoldCount()); |
153 |
+ |
} |
154 |
+ |
} |
155 |
|
|
156 |
|
|
157 |
|
/** |
202 |
|
public void run() { |
203 |
|
try { |
204 |
|
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
190 |
– |
threadShouldThrow(); |
205 |
|
} catch(InterruptedException success){} |
206 |
|
} |
207 |
|
}); |
391 |
|
} |
392 |
|
} |
393 |
|
|
394 |
+ |
/** |
395 |
+ |
* Read trylock succeeds if write locked by current thread |
396 |
+ |
*/ |
397 |
+ |
public void testReadHoldingWriteLock() { |
398 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
399 |
+ |
lock.writeLock().lock(); |
400 |
+ |
assertTrue(lock.readLock().tryLock()); |
401 |
+ |
lock.readLock().unlock(); |
402 |
+ |
lock.writeLock().unlock(); |
403 |
+ |
} |
404 |
+ |
|
405 |
+ |
/** |
406 |
+ |
* Read lock succeeds if write locked by current thread even if |
407 |
+ |
* other threads are waiting for readlock |
408 |
+ |
*/ |
409 |
+ |
public void testReadHoldingWriteLock2() { |
410 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
411 |
+ |
lock.writeLock().lock(); |
412 |
+ |
Thread t1 = new Thread(new Runnable() { |
413 |
+ |
public void run() { |
414 |
+ |
lock.readLock().lock(); |
415 |
+ |
lock.readLock().unlock(); |
416 |
+ |
} |
417 |
+ |
}); |
418 |
+ |
Thread t2 = new Thread(new Runnable() { |
419 |
+ |
public void run() { |
420 |
+ |
lock.readLock().lock(); |
421 |
+ |
lock.readLock().unlock(); |
422 |
+ |
} |
423 |
+ |
}); |
424 |
+ |
|
425 |
+ |
try { |
426 |
+ |
t1.start(); |
427 |
+ |
t2.start(); |
428 |
+ |
lock.readLock().lock(); |
429 |
+ |
lock.readLock().unlock(); |
430 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
431 |
+ |
lock.readLock().lock(); |
432 |
+ |
lock.readLock().unlock(); |
433 |
+ |
lock.writeLock().unlock(); |
434 |
+ |
t1.join(MEDIUM_DELAY_MS); |
435 |
+ |
t2.join(MEDIUM_DELAY_MS); |
436 |
+ |
assertTrue(!t1.isAlive()); |
437 |
+ |
assertTrue(!t2.isAlive()); |
438 |
+ |
|
439 |
+ |
} catch(Exception e){ |
440 |
+ |
unexpectedException(); |
441 |
+ |
} |
442 |
+ |
} |
443 |
+ |
|
444 |
+ |
/** |
445 |
+ |
* Read lock succeeds if write locked by current thread even if |
446 |
+ |
* other threads are waiting for writelock |
447 |
+ |
*/ |
448 |
+ |
public void testReadHoldingWriteLock3() { |
449 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
450 |
+ |
lock.writeLock().lock(); |
451 |
+ |
Thread t1 = new Thread(new Runnable() { |
452 |
+ |
public void run() { |
453 |
+ |
lock.writeLock().lock(); |
454 |
+ |
lock.writeLock().unlock(); |
455 |
+ |
} |
456 |
+ |
}); |
457 |
+ |
Thread t2 = new Thread(new Runnable() { |
458 |
+ |
public void run() { |
459 |
+ |
lock.writeLock().lock(); |
460 |
+ |
lock.writeLock().unlock(); |
461 |
+ |
} |
462 |
+ |
}); |
463 |
+ |
|
464 |
+ |
try { |
465 |
+ |
t1.start(); |
466 |
+ |
t2.start(); |
467 |
+ |
lock.readLock().lock(); |
468 |
+ |
lock.readLock().unlock(); |
469 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
470 |
+ |
lock.readLock().lock(); |
471 |
+ |
lock.readLock().unlock(); |
472 |
+ |
lock.writeLock().unlock(); |
473 |
+ |
t1.join(MEDIUM_DELAY_MS); |
474 |
+ |
t2.join(MEDIUM_DELAY_MS); |
475 |
+ |
assertTrue(!t1.isAlive()); |
476 |
+ |
assertTrue(!t2.isAlive()); |
477 |
+ |
|
478 |
+ |
} catch(Exception e){ |
479 |
+ |
unexpectedException(); |
480 |
+ |
} |
481 |
+ |
} |
482 |
+ |
|
483 |
+ |
|
484 |
+ |
/** |
485 |
+ |
* Write lock succeeds if write locked by current thread even if |
486 |
+ |
* other threads are waiting for writelock |
487 |
+ |
*/ |
488 |
+ |
public void testWriteHoldingWriteLock4() { |
489 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
490 |
+ |
lock.writeLock().lock(); |
491 |
+ |
Thread t1 = new Thread(new Runnable() { |
492 |
+ |
public void run() { |
493 |
+ |
lock.writeLock().lock(); |
494 |
+ |
lock.writeLock().unlock(); |
495 |
+ |
} |
496 |
+ |
}); |
497 |
+ |
Thread t2 = new Thread(new Runnable() { |
498 |
+ |
public void run() { |
499 |
+ |
lock.writeLock().lock(); |
500 |
+ |
lock.writeLock().unlock(); |
501 |
+ |
} |
502 |
+ |
}); |
503 |
+ |
|
504 |
+ |
try { |
505 |
+ |
t1.start(); |
506 |
+ |
t2.start(); |
507 |
+ |
lock.writeLock().lock(); |
508 |
+ |
lock.writeLock().unlock(); |
509 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
510 |
+ |
lock.writeLock().lock(); |
511 |
+ |
lock.writeLock().unlock(); |
512 |
+ |
lock.writeLock().unlock(); |
513 |
+ |
t1.join(MEDIUM_DELAY_MS); |
514 |
+ |
t2.join(MEDIUM_DELAY_MS); |
515 |
+ |
assertTrue(!t1.isAlive()); |
516 |
+ |
assertTrue(!t2.isAlive()); |
517 |
+ |
|
518 |
+ |
} catch(Exception e){ |
519 |
+ |
unexpectedException(); |
520 |
+ |
} |
521 |
+ |
} |
522 |
+ |
|
523 |
+ |
|
524 |
+ |
/** |
525 |
+ |
* Fair Read trylock succeeds if write locked by current thread |
526 |
+ |
*/ |
527 |
+ |
public void testReadHoldingWriteLockFair() { |
528 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
529 |
+ |
lock.writeLock().lock(); |
530 |
+ |
assertTrue(lock.readLock().tryLock()); |
531 |
+ |
lock.readLock().unlock(); |
532 |
+ |
lock.writeLock().unlock(); |
533 |
+ |
} |
534 |
+ |
|
535 |
+ |
/** |
536 |
+ |
* Fair Read lock succeeds if write locked by current thread even if |
537 |
+ |
* other threads are waiting for readlock |
538 |
+ |
*/ |
539 |
+ |
public void testReadHoldingWriteLockFair2() { |
540 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
541 |
+ |
lock.writeLock().lock(); |
542 |
+ |
Thread t1 = new Thread(new Runnable() { |
543 |
+ |
public void run() { |
544 |
+ |
lock.readLock().lock(); |
545 |
+ |
lock.readLock().unlock(); |
546 |
+ |
} |
547 |
+ |
}); |
548 |
+ |
Thread t2 = new Thread(new Runnable() { |
549 |
+ |
public void run() { |
550 |
+ |
lock.readLock().lock(); |
551 |
+ |
lock.readLock().unlock(); |
552 |
+ |
} |
553 |
+ |
}); |
554 |
+ |
|
555 |
+ |
try { |
556 |
+ |
t1.start(); |
557 |
+ |
t2.start(); |
558 |
+ |
lock.readLock().lock(); |
559 |
+ |
lock.readLock().unlock(); |
560 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
561 |
+ |
lock.readLock().lock(); |
562 |
+ |
lock.readLock().unlock(); |
563 |
+ |
lock.writeLock().unlock(); |
564 |
+ |
t1.join(MEDIUM_DELAY_MS); |
565 |
+ |
t2.join(MEDIUM_DELAY_MS); |
566 |
+ |
assertTrue(!t1.isAlive()); |
567 |
+ |
assertTrue(!t2.isAlive()); |
568 |
+ |
|
569 |
+ |
} catch(Exception e){ |
570 |
+ |
unexpectedException(); |
571 |
+ |
} |
572 |
+ |
} |
573 |
+ |
|
574 |
+ |
|
575 |
+ |
/** |
576 |
+ |
* Fair Read lock succeeds if write locked by current thread even if |
577 |
+ |
* other threads are waiting for writelock |
578 |
+ |
*/ |
579 |
+ |
public void testReadHoldingWriteLockFair3() { |
580 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
581 |
+ |
lock.writeLock().lock(); |
582 |
+ |
Thread t1 = new Thread(new Runnable() { |
583 |
+ |
public void run() { |
584 |
+ |
lock.writeLock().lock(); |
585 |
+ |
lock.writeLock().unlock(); |
586 |
+ |
} |
587 |
+ |
}); |
588 |
+ |
Thread t2 = new Thread(new Runnable() { |
589 |
+ |
public void run() { |
590 |
+ |
lock.writeLock().lock(); |
591 |
+ |
lock.writeLock().unlock(); |
592 |
+ |
} |
593 |
+ |
}); |
594 |
+ |
|
595 |
+ |
try { |
596 |
+ |
t1.start(); |
597 |
+ |
t2.start(); |
598 |
+ |
lock.readLock().lock(); |
599 |
+ |
lock.readLock().unlock(); |
600 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
601 |
+ |
lock.readLock().lock(); |
602 |
+ |
lock.readLock().unlock(); |
603 |
+ |
lock.writeLock().unlock(); |
604 |
+ |
t1.join(MEDIUM_DELAY_MS); |
605 |
+ |
t2.join(MEDIUM_DELAY_MS); |
606 |
+ |
assertTrue(!t1.isAlive()); |
607 |
+ |
assertTrue(!t2.isAlive()); |
608 |
+ |
|
609 |
+ |
} catch(Exception e){ |
610 |
+ |
unexpectedException(); |
611 |
+ |
} |
612 |
+ |
} |
613 |
+ |
|
614 |
+ |
|
615 |
+ |
/** |
616 |
+ |
* Fair Write lock succeeds if write locked by current thread even if |
617 |
+ |
* other threads are waiting for writelock |
618 |
+ |
*/ |
619 |
+ |
public void testWriteHoldingWriteLockFair4() { |
620 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
621 |
+ |
lock.writeLock().lock(); |
622 |
+ |
Thread t1 = new Thread(new Runnable() { |
623 |
+ |
public void run() { |
624 |
+ |
lock.writeLock().lock(); |
625 |
+ |
lock.writeLock().unlock(); |
626 |
+ |
} |
627 |
+ |
}); |
628 |
+ |
Thread t2 = new Thread(new Runnable() { |
629 |
+ |
public void run() { |
630 |
+ |
lock.writeLock().lock(); |
631 |
+ |
lock.writeLock().unlock(); |
632 |
+ |
} |
633 |
+ |
}); |
634 |
+ |
|
635 |
+ |
try { |
636 |
+ |
t1.start(); |
637 |
+ |
t2.start(); |
638 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
639 |
+ |
assertTrue(lock.isWriteLockedByCurrentThread()); |
640 |
+ |
assertTrue(lock.getWriteHoldCount() == 1); |
641 |
+ |
lock.writeLock().lock(); |
642 |
+ |
assertTrue(lock.getWriteHoldCount() == 2); |
643 |
+ |
lock.writeLock().unlock(); |
644 |
+ |
lock.writeLock().lock(); |
645 |
+ |
lock.writeLock().unlock(); |
646 |
+ |
lock.writeLock().unlock(); |
647 |
+ |
t1.join(MEDIUM_DELAY_MS); |
648 |
+ |
t2.join(MEDIUM_DELAY_MS); |
649 |
+ |
assertTrue(!t1.isAlive()); |
650 |
+ |
assertTrue(!t2.isAlive()); |
651 |
+ |
|
652 |
+ |
} catch(Exception e){ |
653 |
+ |
unexpectedException(); |
654 |
+ |
} |
655 |
+ |
} |
656 |
+ |
|
657 |
|
|
658 |
|
/** |
659 |
|
* Read tryLock succeeds if readlocked but not writelocked |
698 |
|
} |
699 |
|
} |
700 |
|
|
701 |
+ |
|
702 |
+ |
/** |
703 |
+ |
* Fair Read tryLock succeeds if readlocked but not writelocked |
704 |
+ |
*/ |
705 |
+ |
public void testTryLockWhenReadLockedFair() { |
706 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
707 |
+ |
lock.readLock().lock(); |
708 |
+ |
Thread t = new Thread(new Runnable() { |
709 |
+ |
public void run() { |
710 |
+ |
threadAssertTrue(lock.readLock().tryLock()); |
711 |
+ |
lock.readLock().unlock(); |
712 |
+ |
} |
713 |
+ |
}); |
714 |
+ |
try { |
715 |
+ |
t.start(); |
716 |
+ |
t.join(); |
717 |
+ |
lock.readLock().unlock(); |
718 |
+ |
} catch(Exception e){ |
719 |
+ |
unexpectedException(); |
720 |
+ |
} |
721 |
+ |
} |
722 |
+ |
|
723 |
+ |
|
724 |
+ |
|
725 |
+ |
/** |
726 |
+ |
* Fair write tryLock fails when readlocked |
727 |
+ |
*/ |
728 |
+ |
public void testWriteTryLockWhenReadLockedFair() { |
729 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
730 |
+ |
lock.readLock().lock(); |
731 |
+ |
Thread t = new Thread(new Runnable() { |
732 |
+ |
public void run() { |
733 |
+ |
threadAssertFalse(lock.writeLock().tryLock()); |
734 |
+ |
} |
735 |
+ |
}); |
736 |
+ |
try { |
737 |
+ |
t.start(); |
738 |
+ |
t.join(); |
739 |
+ |
lock.readLock().unlock(); |
740 |
+ |
} catch(Exception e){ |
741 |
+ |
unexpectedException(); |
742 |
+ |
} |
743 |
+ |
} |
744 |
+ |
|
745 |
|
|
746 |
|
|
747 |
|
/** |
913 |
|
final Condition c = lock.writeLock().newCondition(); |
914 |
|
try { |
915 |
|
lock.writeLock().lock(); |
595 |
– |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
916 |
|
lock.writeLock().unlock(); |
917 |
|
} |
918 |
|
catch (Exception ex) { |
929 |
|
try { |
930 |
|
lock.writeLock().lock(); |
931 |
|
java.util.Date d = new java.util.Date(); |
612 |
– |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
932 |
|
lock.writeLock().unlock(); |
933 |
|
} |
934 |
|
catch (Exception ex) { |
969 |
|
} |
970 |
|
} |
971 |
|
|
972 |
+ |
/** A helper class for uninterruptible wait tests */ |
973 |
+ |
class UninterruptableThread extends Thread { |
974 |
+ |
private Lock lock; |
975 |
+ |
private Condition c; |
976 |
+ |
|
977 |
+ |
public volatile boolean canAwake = false; |
978 |
+ |
public volatile boolean interrupted = false; |
979 |
+ |
public volatile boolean lockStarted = false; |
980 |
+ |
|
981 |
+ |
public UninterruptableThread(Lock lock, Condition c) { |
982 |
+ |
this.lock = lock; |
983 |
+ |
this.c = c; |
984 |
+ |
} |
985 |
+ |
|
986 |
+ |
public synchronized void run() { |
987 |
+ |
lock.lock(); |
988 |
+ |
lockStarted = true; |
989 |
+ |
|
990 |
+ |
while (!canAwake) { |
991 |
+ |
c.awaitUninterruptibly(); |
992 |
+ |
} |
993 |
+ |
|
994 |
+ |
interrupted = isInterrupted(); |
995 |
+ |
lock.unlock(); |
996 |
+ |
} |
997 |
+ |
} |
998 |
+ |
|
999 |
|
/** |
1000 |
|
* awaitUninterruptibly doesn't abort on interrupt |
1001 |
|
*/ |
1002 |
|
public void testAwaitUninterruptibly() { |
1003 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1003 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1004 |
|
final Condition c = lock.writeLock().newCondition(); |
1005 |
< |
Thread t = new Thread(new Runnable() { |
660 |
< |
public void run() { |
661 |
< |
lock.writeLock().lock(); |
662 |
< |
c.awaitUninterruptibly(); |
663 |
< |
lock.writeLock().unlock(); |
664 |
< |
} |
665 |
< |
}); |
1005 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
1006 |
|
|
1007 |
|
try { |
1008 |
< |
t.start(); |
1009 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1010 |
< |
t.interrupt(); |
1008 |
> |
thread.start(); |
1009 |
> |
|
1010 |
> |
while (!thread.lockStarted) { |
1011 |
> |
Thread.sleep(100); |
1012 |
> |
} |
1013 |
> |
|
1014 |
|
lock.writeLock().lock(); |
1015 |
< |
c.signal(); |
1016 |
< |
lock.writeLock().unlock(); |
1017 |
< |
assert(t.isInterrupted()); |
1018 |
< |
t.join(SHORT_DELAY_MS); |
1019 |
< |
assertFalse(t.isAlive()); |
1020 |
< |
} |
1021 |
< |
catch (Exception ex) { |
1015 |
> |
try { |
1016 |
> |
thread.interrupt(); |
1017 |
> |
thread.canAwake = true; |
1018 |
> |
c.signal(); |
1019 |
> |
} finally { |
1020 |
> |
lock.writeLock().unlock(); |
1021 |
> |
} |
1022 |
> |
|
1023 |
> |
thread.join(); |
1024 |
> |
assertTrue(thread.interrupted); |
1025 |
> |
assertFalse(thread.isAlive()); |
1026 |
> |
} catch (Exception ex) { |
1027 |
|
unexpectedException(); |
1028 |
|
} |
1029 |
|
} |
1226 |
|
} |
1227 |
|
|
1228 |
|
/** |
1229 |
+ |
* hasQueuedThread(null) throws NPE |
1230 |
+ |
*/ |
1231 |
+ |
public void testHasQueuedThreadNPE() { |
1232 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1233 |
+ |
try { |
1234 |
+ |
sync.hasQueuedThread(null); |
1235 |
+ |
shouldThrow(); |
1236 |
+ |
} catch (NullPointerException success) { |
1237 |
+ |
} |
1238 |
+ |
} |
1239 |
+ |
|
1240 |
+ |
/** |
1241 |
+ |
* hasQueuedThread reports whether a thread is queued. |
1242 |
+ |
*/ |
1243 |
+ |
public void testHasQueuedThread() { |
1244 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1245 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
1246 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
1247 |
+ |
try { |
1248 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1249 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1250 |
+ |
sync.writeLock().lock(); |
1251 |
+ |
t1.start(); |
1252 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1253 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1254 |
+ |
t2.start(); |
1255 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1256 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1257 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1258 |
+ |
t1.interrupt(); |
1259 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1260 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1261 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1262 |
+ |
sync.writeLock().unlock(); |
1263 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1264 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1265 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1266 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1267 |
+ |
t1.join(); |
1268 |
+ |
t2.join(); |
1269 |
+ |
} catch(Exception e){ |
1270 |
+ |
unexpectedException(); |
1271 |
+ |
} |
1272 |
+ |
} |
1273 |
+ |
|
1274 |
+ |
|
1275 |
+ |
/** |
1276 |
|
* getQueueLength reports number of waiting threads |
1277 |
|
*/ |
1278 |
|
public void testGetQueueLength() { |
1620 |
|
} |
1621 |
|
} |
1622 |
|
|
1623 |
+ |
/** |
1624 |
+ |
* toString indicates current lock state |
1625 |
+ |
*/ |
1626 |
+ |
public void testToString() { |
1627 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1628 |
+ |
String us = lock.toString(); |
1629 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1630 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1631 |
+ |
lock.writeLock().lock(); |
1632 |
+ |
String ws = lock.toString(); |
1633 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1634 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1635 |
+ |
lock.writeLock().unlock(); |
1636 |
+ |
lock.readLock().lock(); |
1637 |
+ |
lock.readLock().lock(); |
1638 |
+ |
String rs = lock.toString(); |
1639 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1640 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1641 |
+ |
} |
1642 |
+ |
|
1643 |
+ |
/** |
1644 |
+ |
* readLock.toString indicates current lock state |
1645 |
+ |
*/ |
1646 |
+ |
public void testReadLockToString() { |
1647 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1648 |
+ |
String us = lock.readLock().toString(); |
1649 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1650 |
+ |
lock.readLock().lock(); |
1651 |
+ |
lock.readLock().lock(); |
1652 |
+ |
String rs = lock.readLock().toString(); |
1653 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1654 |
+ |
} |
1655 |
+ |
|
1656 |
+ |
/** |
1657 |
+ |
* writeLock.toString indicates current lock state |
1658 |
+ |
*/ |
1659 |
+ |
public void testWriteLockToString() { |
1660 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1661 |
+ |
String us = lock.writeLock().toString(); |
1662 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1663 |
+ |
lock.writeLock().lock(); |
1664 |
+ |
String ls = lock.writeLock().toString(); |
1665 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1666 |
+ |
} |
1667 |
+ |
|
1668 |
|
} |