16 |
|
|
17 |
|
public class StampedLockTest extends JSR166TestCase { |
18 |
|
public static void main(String[] args) { |
19 |
< |
junit.textui.TestRunner.run(suite()); |
19 |
> |
main(suite(), args); |
20 |
|
} |
21 |
|
public static Test suite() { |
22 |
|
return new TestSuite(StampedLockTest.class); |
166 |
|
*/ |
167 |
|
public void testWriteUnlock_IMSE2() { |
168 |
|
StampedLock lock = new StampedLock(); |
169 |
+ |
long s = lock.writeLock(); |
170 |
+ |
lock.unlockWrite(s); |
171 |
|
try { |
170 |
– |
long s = lock.writeLock(); |
171 |
– |
lock.unlockWrite(s); |
172 |
|
lock.unlockWrite(s); |
173 |
|
shouldThrow(); |
174 |
|
} catch (IllegalMonitorStateException success) {} |
179 |
|
*/ |
180 |
|
public void testWriteUnlock_IMSE3() { |
181 |
|
StampedLock lock = new StampedLock(); |
182 |
+ |
long s = lock.readLock(); |
183 |
|
try { |
183 |
– |
long s = lock.readLock(); |
184 |
|
lock.unlockWrite(s); |
185 |
|
shouldThrow(); |
186 |
|
} catch (IllegalMonitorStateException success) {} |
191 |
|
*/ |
192 |
|
public void testReadUnlock_IMSE() { |
193 |
|
StampedLock lock = new StampedLock(); |
194 |
+ |
long s = lock.readLock(); |
195 |
+ |
lock.unlockRead(s); |
196 |
|
try { |
195 |
– |
long s = lock.readLock(); |
196 |
– |
lock.unlockRead(s); |
197 |
|
lock.unlockRead(s); |
198 |
|
shouldThrow(); |
199 |
|
} catch (IllegalMonitorStateException success) {} |
215 |
|
*/ |
216 |
|
public void testReadUnlock_IMSE3() { |
217 |
|
StampedLock lock = new StampedLock(); |
218 |
+ |
long s = lock.writeLock(); |
219 |
|
try { |
219 |
– |
long s = lock.writeLock(); |
220 |
|
lock.unlockRead(s); |
221 |
|
shouldThrow(); |
222 |
|
} catch (IllegalMonitorStateException success) {} |
285 |
|
running.countDown(); |
286 |
|
lock.writeLockInterruptibly(); |
287 |
|
}}); |
288 |
< |
|
288 |
> |
|
289 |
|
running.await(); |
290 |
|
waitForThreadToEnterWaitState(t, 100); |
291 |
|
t.interrupt(); |
305 |
|
running.countDown(); |
306 |
|
lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS); |
307 |
|
}}); |
308 |
< |
|
308 |
> |
|
309 |
|
running.await(); |
310 |
|
waitForThreadToEnterWaitState(t, 100); |
311 |
|
t.interrupt(); |
326 |
|
running.countDown(); |
327 |
|
lock.readLockInterruptibly(); |
328 |
|
}}); |
329 |
< |
|
329 |
> |
|
330 |
|
running.await(); |
331 |
|
waitForThreadToEnterWaitState(t, 100); |
332 |
|
t.interrupt(); |
346 |
|
running.countDown(); |
347 |
|
lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS); |
348 |
|
}}); |
349 |
< |
|
349 |
> |
|
350 |
|
running.await(); |
351 |
|
waitForThreadToEnterWaitState(t, 100); |
352 |
|
t.interrupt(); |
378 |
|
long ws = lock.tryWriteLock(); |
379 |
|
assertTrue(ws == 0L); |
380 |
|
}}); |
381 |
< |
|
381 |
> |
|
382 |
|
awaitTermination(t); |
383 |
|
releaseWriteLock(lock, s); |
384 |
|
} |
394 |
|
long rs = lock.tryReadLock(); |
395 |
|
assertEquals(rs, 0L); |
396 |
|
}}); |
397 |
< |
|
397 |
> |
|
398 |
|
awaitTermination(t); |
399 |
|
releaseWriteLock(lock, s); |
400 |
|
} |
416 |
|
long s4 = lock.readLock(); |
417 |
|
lock.unlockRead(s4); |
418 |
|
}}); |
419 |
< |
|
419 |
> |
|
420 |
|
awaitTermination(t); |
421 |
|
lock.unlockRead(s); |
422 |
|
} |
434 |
|
long s = lock.writeLock(); |
435 |
|
lock.unlockWrite(s); |
436 |
|
}}); |
437 |
< |
|
437 |
> |
|
438 |
|
running.await(); |
439 |
|
waitForThreadToEnterWaitState(t, 100); |
440 |
|
assertFalse(lock.isWriteLocked()); |
454 |
|
long rs = lock.readLock(); |
455 |
|
lock.unlockRead(rs); |
456 |
|
}}); |
457 |
< |
|
457 |
> |
|
458 |
|
awaitTermination(t1); |
459 |
|
|
460 |
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
462 |
|
long ws = lock.writeLock(); |
463 |
|
lock.unlockWrite(ws); |
464 |
|
}}); |
465 |
< |
|
465 |
> |
|
466 |
|
assertFalse(lock.isWriteLocked()); |
467 |
|
lock.unlockRead(s); |
468 |
|
awaitTermination(t2); |
599 |
|
running.countDown(); |
600 |
|
lock.readLockInterruptibly(); |
601 |
|
}}); |
602 |
< |
|
602 |
> |
|
603 |
|
running.await(); |
604 |
|
waitForThreadToEnterWaitState(t, 100); |
605 |
|
t.interrupt(); |
704 |
|
running.countDown(); |
705 |
|
lock.writeLockInterruptibly(); |
706 |
|
}}); |
707 |
< |
|
707 |
> |
|
708 |
|
running.await(); |
709 |
|
assertFalse(lock.validate(p)); |
710 |
|
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
718 |
|
public void testTryConvertToOptimisticRead() throws InterruptedException { |
719 |
|
StampedLock lock = new StampedLock(); |
720 |
|
long s, p; |
721 |
< |
s = 0L; |
722 |
< |
assertFalse((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
721 |
> |
assertEquals(0L, lock.tryConvertToOptimisticRead(0L)); |
722 |
> |
|
723 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
724 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
724 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
725 |
> |
assertTrue(lock.validate(s)); |
726 |
> |
|
727 |
> |
assertTrue((p = lock.readLock()) != 0L); |
728 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
729 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
730 |
> |
assertTrue(lock.validate(s)); |
731 |
> |
lock.unlockRead(p); |
732 |
> |
|
733 |
|
assertTrue((s = lock.writeLock()) != 0L); |
734 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
735 |
|
assertTrue(lock.validate(p)); |
736 |
+ |
|
737 |
|
assertTrue((s = lock.readLock()) != 0L); |
738 |
|
assertTrue(lock.validate(s)); |
739 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
740 |
|
assertTrue(lock.validate(p)); |
741 |
+ |
|
742 |
|
assertTrue((s = lock.tryWriteLock()) != 0L); |
743 |
|
assertTrue(lock.validate(s)); |
744 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
745 |
|
assertTrue(lock.validate(p)); |
746 |
+ |
|
747 |
|
assertTrue((s = lock.tryReadLock()) != 0L); |
748 |
|
assertTrue(lock.validate(s)); |
749 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
750 |
|
assertTrue(lock.validate(p)); |
751 |
+ |
|
752 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
753 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
754 |
|
assertTrue(lock.validate(p)); |
755 |
+ |
|
756 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
757 |
|
assertTrue(lock.validate(s)); |
758 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
766 |
|
public void testTryConvertToReadLock() throws InterruptedException { |
767 |
|
StampedLock lock = new StampedLock(); |
768 |
|
long s, p; |
769 |
< |
s = 0L; |
770 |
< |
assertFalse((p = lock.tryConvertToReadLock(s)) != 0L); |
769 |
> |
|
770 |
> |
assertFalse((p = lock.tryConvertToReadLock(0L)) != 0L); |
771 |
> |
|
772 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
773 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
774 |
+ |
assertTrue(lock.isReadLocked()); |
775 |
+ |
assertEquals(1, lock.getReadLockCount()); |
776 |
|
lock.unlockRead(p); |
777 |
+ |
|
778 |
|
assertTrue((s = lock.writeLock()) != 0L); |
779 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
780 |
|
assertTrue(lock.validate(p)); |
781 |
+ |
assertTrue(lock.isReadLocked()); |
782 |
+ |
assertEquals(1, lock.getReadLockCount()); |
783 |
|
lock.unlockRead(p); |
784 |
+ |
|
785 |
|
assertTrue((s = lock.readLock()) != 0L); |
786 |
|
assertTrue(lock.validate(s)); |
787 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
788 |
< |
assertTrue(lock.validate(p)); |
789 |
< |
lock.unlockRead(p); |
787 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
788 |
> |
assertTrue(lock.validate(s)); |
789 |
> |
assertTrue(lock.isReadLocked()); |
790 |
> |
assertEquals(1, lock.getReadLockCount()); |
791 |
> |
lock.unlockRead(s); |
792 |
> |
|
793 |
|
assertTrue((s = lock.tryWriteLock()) != 0L); |
794 |
|
assertTrue(lock.validate(s)); |
795 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
796 |
|
assertTrue(lock.validate(p)); |
797 |
+ |
assertEquals(1, lock.getReadLockCount()); |
798 |
|
lock.unlockRead(p); |
799 |
+ |
|
800 |
|
assertTrue((s = lock.tryReadLock()) != 0L); |
801 |
|
assertTrue(lock.validate(s)); |
802 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
803 |
< |
assertTrue(lock.validate(p)); |
804 |
< |
lock.unlockRead(p); |
802 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
803 |
> |
assertTrue(lock.validate(s)); |
804 |
> |
assertTrue(lock.isReadLocked()); |
805 |
> |
assertEquals(1, lock.getReadLockCount()); |
806 |
> |
lock.unlockRead(s); |
807 |
> |
|
808 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
809 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
810 |
|
assertTrue(lock.validate(p)); |
811 |
+ |
assertTrue(lock.isReadLocked()); |
812 |
+ |
assertEquals(1, lock.getReadLockCount()); |
813 |
|
lock.unlockRead(p); |
814 |
+ |
|
815 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
816 |
|
assertTrue(lock.validate(s)); |
817 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
818 |
< |
assertTrue(lock.validate(p)); |
819 |
< |
lock.unlockRead(p); |
817 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
818 |
> |
assertTrue(lock.validate(s)); |
819 |
> |
assertTrue(lock.isReadLocked()); |
820 |
> |
assertEquals(1, lock.getReadLockCount()); |
821 |
> |
lock.unlockRead(s); |
822 |
|
} |
823 |
|
|
824 |
|
/** |
828 |
|
public void testTryConvertToWriteLock() throws InterruptedException { |
829 |
|
StampedLock lock = new StampedLock(); |
830 |
|
long s, p; |
831 |
< |
s = 0L; |
832 |
< |
assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L); |
831 |
> |
|
832 |
> |
assertFalse((p = lock.tryConvertToWriteLock(0L)) != 0L); |
833 |
> |
|
834 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
835 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
836 |
+ |
assertTrue(lock.isWriteLocked()); |
837 |
|
lock.unlockWrite(p); |
838 |
+ |
|
839 |
|
assertTrue((s = lock.writeLock()) != 0L); |
840 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
841 |
< |
assertTrue(lock.validate(p)); |
842 |
< |
lock.unlockWrite(p); |
840 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
841 |
> |
assertTrue(lock.validate(s)); |
842 |
> |
assertTrue(lock.isWriteLocked()); |
843 |
> |
lock.unlockWrite(s); |
844 |
> |
|
845 |
|
assertTrue((s = lock.readLock()) != 0L); |
846 |
|
assertTrue(lock.validate(s)); |
847 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
848 |
|
assertTrue(lock.validate(p)); |
849 |
+ |
assertTrue(lock.isWriteLocked()); |
850 |
|
lock.unlockWrite(p); |
851 |
+ |
|
852 |
|
assertTrue((s = lock.tryWriteLock()) != 0L); |
853 |
|
assertTrue(lock.validate(s)); |
854 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
855 |
< |
assertTrue(lock.validate(p)); |
856 |
< |
lock.unlockWrite(p); |
854 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
855 |
> |
assertTrue(lock.validate(s)); |
856 |
> |
assertTrue(lock.isWriteLocked()); |
857 |
> |
lock.unlockWrite(s); |
858 |
> |
|
859 |
|
assertTrue((s = lock.tryReadLock()) != 0L); |
860 |
|
assertTrue(lock.validate(s)); |
861 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
862 |
|
assertTrue(lock.validate(p)); |
863 |
+ |
assertTrue(lock.isWriteLocked()); |
864 |
|
lock.unlockWrite(p); |
865 |
+ |
|
866 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
867 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
868 |
|
assertTrue(lock.validate(p)); |
869 |
+ |
assertTrue(lock.isWriteLocked()); |
870 |
|
lock.unlockWrite(p); |
871 |
+ |
|
872 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
873 |
|
assertTrue(lock.validate(s)); |
874 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
875 |
|
assertTrue(lock.validate(p)); |
876 |
+ |
assertTrue(lock.isWriteLocked()); |
877 |
|
lock.unlockWrite(p); |
878 |
|
} |
879 |
|
|
923 |
|
assertTrue(lock.tryLock()); |
924 |
|
} |
925 |
|
|
926 |
+ |
/** |
927 |
+ |
* Lock.newCondition throws UnsupportedOperationException |
928 |
+ |
*/ |
929 |
+ |
public void testLockViewsDoNotSupportConditions() { |
930 |
+ |
StampedLock sl = new StampedLock(); |
931 |
+ |
assertThrows(UnsupportedOperationException.class, |
932 |
+ |
() -> sl.asWriteLock().newCondition(), |
933 |
+ |
() -> sl.asReadLock().newCondition(), |
934 |
+ |
() -> sl.asReadWriteLock().writeLock().newCondition(), |
935 |
+ |
() -> sl.asReadWriteLock().readLock().newCondition()); |
936 |
+ |
} |
937 |
+ |
|
938 |
+ |
/** |
939 |
+ |
* Passing optimistic read stamps to unlock operations result in |
940 |
+ |
* IllegalMonitorStateException |
941 |
+ |
*/ |
942 |
+ |
public void testCannotUnlockOptimisticReadStamps() { |
943 |
+ |
Runnable[] actions = { |
944 |
+ |
() -> { |
945 |
+ |
StampedLock sl = new StampedLock(); |
946 |
+ |
long stamp = sl.tryOptimisticRead(); |
947 |
+ |
assertTrue(stamp != 0); |
948 |
+ |
sl.unlockRead(stamp); |
949 |
+ |
}, |
950 |
+ |
() -> { |
951 |
+ |
StampedLock sl = new StampedLock(); |
952 |
+ |
long stamp = sl.tryOptimisticRead(); |
953 |
+ |
sl.unlock(stamp); |
954 |
+ |
}, |
955 |
+ |
|
956 |
+ |
() -> { |
957 |
+ |
StampedLock sl = new StampedLock(); |
958 |
+ |
long stamp = sl.tryOptimisticRead(); |
959 |
+ |
sl.writeLock(); |
960 |
+ |
sl.unlock(stamp); |
961 |
+ |
}, |
962 |
+ |
() -> { |
963 |
+ |
StampedLock sl = new StampedLock(); |
964 |
+ |
long stamp = sl.tryOptimisticRead(); |
965 |
+ |
sl.readLock(); |
966 |
+ |
sl.unlockRead(stamp); |
967 |
+ |
}, |
968 |
+ |
() -> { |
969 |
+ |
StampedLock sl = new StampedLock(); |
970 |
+ |
long stamp = sl.tryOptimisticRead(); |
971 |
+ |
sl.readLock(); |
972 |
+ |
sl.unlock(stamp); |
973 |
+ |
}, |
974 |
+ |
|
975 |
+ |
() -> { |
976 |
+ |
StampedLock sl = new StampedLock(); |
977 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
978 |
+ |
assertTrue(stamp != 0); |
979 |
+ |
sl.writeLock(); |
980 |
+ |
sl.unlockWrite(stamp); |
981 |
+ |
}, |
982 |
+ |
() -> { |
983 |
+ |
StampedLock sl = new StampedLock(); |
984 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
985 |
+ |
sl.writeLock(); |
986 |
+ |
sl.unlock(stamp); |
987 |
+ |
}, |
988 |
+ |
() -> { |
989 |
+ |
StampedLock sl = new StampedLock(); |
990 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
991 |
+ |
sl.readLock(); |
992 |
+ |
sl.unlockRead(stamp); |
993 |
+ |
}, |
994 |
+ |
() -> { |
995 |
+ |
StampedLock sl = new StampedLock(); |
996 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
997 |
+ |
sl.readLock(); |
998 |
+ |
sl.unlock(stamp); |
999 |
+ |
}, |
1000 |
+ |
|
1001 |
+ |
() -> { |
1002 |
+ |
StampedLock sl = new StampedLock(); |
1003 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1004 |
+ |
assertTrue(stamp != 0); |
1005 |
+ |
sl.writeLock(); |
1006 |
+ |
sl.unlockWrite(stamp); |
1007 |
+ |
}, |
1008 |
+ |
() -> { |
1009 |
+ |
StampedLock sl = new StampedLock(); |
1010 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1011 |
+ |
sl.writeLock(); |
1012 |
+ |
sl.unlock(stamp); |
1013 |
+ |
}, |
1014 |
+ |
() -> { |
1015 |
+ |
StampedLock sl = new StampedLock(); |
1016 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1017 |
+ |
sl.readLock(); |
1018 |
+ |
sl.unlockRead(stamp); |
1019 |
+ |
}, |
1020 |
+ |
() -> { |
1021 |
+ |
StampedLock sl = new StampedLock(); |
1022 |
+ |
sl.readLock(); |
1023 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1024 |
+ |
assertTrue(stamp != 0); |
1025 |
+ |
sl.readLock(); |
1026 |
+ |
sl.unlockRead(stamp); |
1027 |
+ |
}, |
1028 |
+ |
() -> { |
1029 |
+ |
StampedLock sl = new StampedLock(); |
1030 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1031 |
+ |
sl.readLock(); |
1032 |
+ |
sl.unlock(stamp); |
1033 |
+ |
}, |
1034 |
+ |
() -> { |
1035 |
+ |
StampedLock sl = new StampedLock(); |
1036 |
+ |
sl.readLock(); |
1037 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1038 |
+ |
sl.readLock(); |
1039 |
+ |
sl.unlock(stamp); |
1040 |
+ |
}, |
1041 |
+ |
}; |
1042 |
+ |
|
1043 |
+ |
assertThrows(IllegalMonitorStateException.class, actions); |
1044 |
+ |
} |
1045 |
+ |
|
1046 |
|
} |