877 |
|
} |
878 |
|
|
879 |
|
/** |
880 |
+ |
* hasQueuedThread(null) throws NPE |
881 |
+ |
*/ |
882 |
+ |
public void testHasQueuedThreadNPE() { |
883 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
884 |
+ |
try { |
885 |
+ |
sync.hasQueuedThread(null); |
886 |
+ |
shouldThrow(); |
887 |
+ |
} catch (NullPointerException success) { |
888 |
+ |
} |
889 |
+ |
} |
890 |
+ |
|
891 |
+ |
/** |
892 |
+ |
* hasQueuedThread reports whether a thread is queued. |
893 |
+ |
*/ |
894 |
+ |
public void testHasQueuedThread() { |
895 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
896 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
897 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
898 |
+ |
try { |
899 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
900 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
901 |
+ |
sync.writeLock().lock(); |
902 |
+ |
t1.start(); |
903 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
904 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
905 |
+ |
t2.start(); |
906 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
907 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
908 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
909 |
+ |
t1.interrupt(); |
910 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
911 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
912 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
913 |
+ |
sync.writeLock().unlock(); |
914 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
915 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
916 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
917 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
918 |
+ |
t1.join(); |
919 |
+ |
t2.join(); |
920 |
+ |
} catch(Exception e){ |
921 |
+ |
unexpectedException(); |
922 |
+ |
} |
923 |
+ |
} |
924 |
+ |
|
925 |
+ |
|
926 |
+ |
/** |
927 |
|
* getQueueLength reports number of waiting threads |
928 |
|
*/ |
929 |
|
public void testGetQueueLength() { |