5 |
|
* http://creativecommons.org/publicdomain/zero/1.0/ |
6 |
|
*/ |
7 |
|
|
8 |
+ |
import static java.util.concurrent.TimeUnit.DAYS; |
9 |
|
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
|
|
11 |
+ |
import java.util.ArrayList; |
12 |
+ |
import java.util.List; |
13 |
|
import java.util.concurrent.CountDownLatch; |
14 |
+ |
import java.util.concurrent.TimeUnit; |
15 |
|
import java.util.concurrent.locks.Lock; |
16 |
|
import java.util.concurrent.locks.StampedLock; |
17 |
+ |
import java.util.function.BiConsumer; |
18 |
+ |
import java.util.function.Consumer; |
19 |
+ |
import java.util.function.Function; |
20 |
|
|
21 |
|
import junit.framework.Test; |
22 |
|
import junit.framework.TestSuite; |
23 |
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|
24 |
|
public class StampedLockTest extends JSR166TestCase { |
25 |
|
public static void main(String[] args) { |
26 |
< |
junit.textui.TestRunner.run(suite()); |
26 |
> |
main(suite(), args); |
27 |
|
} |
28 |
|
public static Test suite() { |
29 |
|
return new TestSuite(StampedLockTest.class); |
173 |
|
*/ |
174 |
|
public void testWriteUnlock_IMSE2() { |
175 |
|
StampedLock lock = new StampedLock(); |
176 |
+ |
long s = lock.writeLock(); |
177 |
+ |
lock.unlockWrite(s); |
178 |
|
try { |
170 |
– |
long s = lock.writeLock(); |
171 |
– |
lock.unlockWrite(s); |
179 |
|
lock.unlockWrite(s); |
180 |
|
shouldThrow(); |
181 |
|
} catch (IllegalMonitorStateException success) {} |
186 |
|
*/ |
187 |
|
public void testWriteUnlock_IMSE3() { |
188 |
|
StampedLock lock = new StampedLock(); |
189 |
+ |
long s = lock.readLock(); |
190 |
|
try { |
183 |
– |
long s = lock.readLock(); |
191 |
|
lock.unlockWrite(s); |
192 |
|
shouldThrow(); |
193 |
|
} catch (IllegalMonitorStateException success) {} |
198 |
|
*/ |
199 |
|
public void testReadUnlock_IMSE() { |
200 |
|
StampedLock lock = new StampedLock(); |
201 |
+ |
long s = lock.readLock(); |
202 |
+ |
lock.unlockRead(s); |
203 |
|
try { |
195 |
– |
long s = lock.readLock(); |
196 |
– |
lock.unlockRead(s); |
204 |
|
lock.unlockRead(s); |
205 |
|
shouldThrow(); |
206 |
|
} catch (IllegalMonitorStateException success) {} |
222 |
|
*/ |
223 |
|
public void testReadUnlock_IMSE3() { |
224 |
|
StampedLock lock = new StampedLock(); |
225 |
+ |
long s = lock.writeLock(); |
226 |
|
try { |
219 |
– |
long s = lock.writeLock(); |
227 |
|
lock.unlockRead(s); |
228 |
|
shouldThrow(); |
229 |
|
} catch (IllegalMonitorStateException success) {} |
292 |
|
running.countDown(); |
293 |
|
lock.writeLockInterruptibly(); |
294 |
|
}}); |
295 |
< |
|
295 |
> |
|
296 |
|
running.await(); |
297 |
|
waitForThreadToEnterWaitState(t, 100); |
298 |
|
t.interrupt(); |
312 |
|
running.countDown(); |
313 |
|
lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS); |
314 |
|
}}); |
315 |
< |
|
315 |
> |
|
316 |
|
running.await(); |
317 |
|
waitForThreadToEnterWaitState(t, 100); |
318 |
|
t.interrupt(); |
333 |
|
running.countDown(); |
334 |
|
lock.readLockInterruptibly(); |
335 |
|
}}); |
336 |
< |
|
336 |
> |
|
337 |
|
running.await(); |
338 |
|
waitForThreadToEnterWaitState(t, 100); |
339 |
|
t.interrupt(); |
353 |
|
running.countDown(); |
354 |
|
lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS); |
355 |
|
}}); |
356 |
< |
|
356 |
> |
|
357 |
|
running.await(); |
358 |
|
waitForThreadToEnterWaitState(t, 100); |
359 |
|
t.interrupt(); |
385 |
|
long ws = lock.tryWriteLock(); |
386 |
|
assertTrue(ws == 0L); |
387 |
|
}}); |
388 |
< |
|
388 |
> |
|
389 |
|
awaitTermination(t); |
390 |
|
releaseWriteLock(lock, s); |
391 |
|
} |
401 |
|
long rs = lock.tryReadLock(); |
402 |
|
assertEquals(rs, 0L); |
403 |
|
}}); |
404 |
< |
|
404 |
> |
|
405 |
|
awaitTermination(t); |
406 |
|
releaseWriteLock(lock, s); |
407 |
|
} |
423 |
|
long s4 = lock.readLock(); |
424 |
|
lock.unlockRead(s4); |
425 |
|
}}); |
426 |
< |
|
426 |
> |
|
427 |
|
awaitTermination(t); |
428 |
|
lock.unlockRead(s); |
429 |
|
} |
441 |
|
long s = lock.writeLock(); |
442 |
|
lock.unlockWrite(s); |
443 |
|
}}); |
444 |
< |
|
444 |
> |
|
445 |
|
running.await(); |
446 |
|
waitForThreadToEnterWaitState(t, 100); |
447 |
|
assertFalse(lock.isWriteLocked()); |
461 |
|
long rs = lock.readLock(); |
462 |
|
lock.unlockRead(rs); |
463 |
|
}}); |
464 |
< |
|
464 |
> |
|
465 |
|
awaitTermination(t1); |
466 |
|
|
467 |
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
469 |
|
long ws = lock.writeLock(); |
470 |
|
lock.unlockWrite(ws); |
471 |
|
}}); |
472 |
< |
|
472 |
> |
|
473 |
|
assertFalse(lock.isWriteLocked()); |
474 |
|
lock.unlockRead(s); |
475 |
|
awaitTermination(t2); |
606 |
|
running.countDown(); |
607 |
|
lock.readLockInterruptibly(); |
608 |
|
}}); |
609 |
< |
|
609 |
> |
|
610 |
|
running.await(); |
611 |
|
waitForThreadToEnterWaitState(t, 100); |
612 |
|
t.interrupt(); |
711 |
|
running.countDown(); |
712 |
|
lock.writeLockInterruptibly(); |
713 |
|
}}); |
714 |
< |
|
714 |
> |
|
715 |
|
running.await(); |
716 |
|
assertFalse(lock.validate(p)); |
717 |
|
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
725 |
|
public void testTryConvertToOptimisticRead() throws InterruptedException { |
726 |
|
StampedLock lock = new StampedLock(); |
727 |
|
long s, p; |
728 |
< |
s = 0L; |
729 |
< |
assertFalse((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
728 |
> |
assertEquals(0L, lock.tryConvertToOptimisticRead(0L)); |
729 |
> |
|
730 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
731 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
731 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
732 |
> |
assertTrue(lock.validate(s)); |
733 |
> |
|
734 |
> |
assertTrue((p = lock.readLock()) != 0L); |
735 |
> |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
736 |
> |
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
737 |
> |
assertTrue(lock.validate(s)); |
738 |
> |
lock.unlockRead(p); |
739 |
> |
|
740 |
|
assertTrue((s = lock.writeLock()) != 0L); |
741 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
742 |
|
assertTrue(lock.validate(p)); |
743 |
+ |
|
744 |
|
assertTrue((s = lock.readLock()) != 0L); |
745 |
|
assertTrue(lock.validate(s)); |
746 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
747 |
|
assertTrue(lock.validate(p)); |
748 |
+ |
|
749 |
|
assertTrue((s = lock.tryWriteLock()) != 0L); |
750 |
|
assertTrue(lock.validate(s)); |
751 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
752 |
|
assertTrue(lock.validate(p)); |
753 |
+ |
|
754 |
|
assertTrue((s = lock.tryReadLock()) != 0L); |
755 |
|
assertTrue(lock.validate(s)); |
756 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
757 |
|
assertTrue(lock.validate(p)); |
758 |
+ |
|
759 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
760 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
761 |
|
assertTrue(lock.validate(p)); |
762 |
+ |
|
763 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
764 |
|
assertTrue(lock.validate(s)); |
765 |
|
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
773 |
|
public void testTryConvertToReadLock() throws InterruptedException { |
774 |
|
StampedLock lock = new StampedLock(); |
775 |
|
long s, p; |
776 |
< |
s = 0L; |
777 |
< |
assertFalse((p = lock.tryConvertToReadLock(s)) != 0L); |
776 |
> |
|
777 |
> |
assertFalse((p = lock.tryConvertToReadLock(0L)) != 0L); |
778 |
> |
|
779 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
780 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
781 |
+ |
assertTrue(lock.isReadLocked()); |
782 |
+ |
assertEquals(1, lock.getReadLockCount()); |
783 |
|
lock.unlockRead(p); |
784 |
+ |
|
785 |
+ |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
786 |
+ |
lock.readLock(); |
787 |
+ |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
788 |
+ |
assertTrue(lock.isReadLocked()); |
789 |
+ |
assertEquals(2, lock.getReadLockCount()); |
790 |
+ |
lock.unlockRead(p); |
791 |
+ |
lock.unlockRead(p); |
792 |
+ |
|
793 |
|
assertTrue((s = lock.writeLock()) != 0L); |
794 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
795 |
|
assertTrue(lock.validate(p)); |
796 |
+ |
assertTrue(lock.isReadLocked()); |
797 |
+ |
assertEquals(1, lock.getReadLockCount()); |
798 |
|
lock.unlockRead(p); |
799 |
+ |
|
800 |
|
assertTrue((s = lock.readLock()) != 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()) != 0L); |
809 |
|
assertTrue(lock.validate(s)); |
810 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
811 |
|
assertTrue(lock.validate(p)); |
812 |
+ |
assertEquals(1, lock.getReadLockCount()); |
813 |
|
lock.unlockRead(p); |
814 |
+ |
|
815 |
|
assertTrue((s = lock.tryReadLock()) != 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 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
824 |
|
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
825 |
|
assertTrue(lock.validate(p)); |
826 |
+ |
assertTrue(lock.isReadLocked()); |
827 |
+ |
assertEquals(1, lock.getReadLockCount()); |
828 |
|
lock.unlockRead(p); |
829 |
+ |
|
830 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
831 |
|
assertTrue(lock.validate(s)); |
832 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
833 |
< |
assertTrue(lock.validate(p)); |
834 |
< |
lock.unlockRead(p); |
832 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
833 |
> |
assertTrue(lock.validate(s)); |
834 |
> |
assertTrue(lock.isReadLocked()); |
835 |
> |
assertEquals(1, lock.getReadLockCount()); |
836 |
> |
lock.unlockRead(s); |
837 |
|
} |
838 |
|
|
839 |
|
/** |
843 |
|
public void testTryConvertToWriteLock() throws InterruptedException { |
844 |
|
StampedLock lock = new StampedLock(); |
845 |
|
long s, p; |
846 |
< |
s = 0L; |
847 |
< |
assertFalse((p = lock.tryConvertToWriteLock(s)) != 0L); |
846 |
> |
|
847 |
> |
assertFalse((p = lock.tryConvertToWriteLock(0L)) != 0L); |
848 |
> |
|
849 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
850 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
851 |
+ |
assertTrue(lock.isWriteLocked()); |
852 |
|
lock.unlockWrite(p); |
853 |
+ |
|
854 |
|
assertTrue((s = lock.writeLock()) != 0L); |
855 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
856 |
< |
assertTrue(lock.validate(p)); |
857 |
< |
lock.unlockWrite(p); |
855 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
856 |
> |
assertTrue(lock.validate(s)); |
857 |
> |
assertTrue(lock.isWriteLocked()); |
858 |
> |
lock.unlockWrite(s); |
859 |
> |
|
860 |
|
assertTrue((s = lock.readLock()) != 0L); |
861 |
|
assertTrue(lock.validate(s)); |
862 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
863 |
|
assertTrue(lock.validate(p)); |
864 |
+ |
assertTrue(lock.isWriteLocked()); |
865 |
|
lock.unlockWrite(p); |
866 |
+ |
|
867 |
|
assertTrue((s = lock.tryWriteLock()) != 0L); |
868 |
|
assertTrue(lock.validate(s)); |
869 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
870 |
< |
assertTrue(lock.validate(p)); |
871 |
< |
lock.unlockWrite(p); |
869 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
870 |
> |
assertTrue(lock.validate(s)); |
871 |
> |
assertTrue(lock.isWriteLocked()); |
872 |
> |
lock.unlockWrite(s); |
873 |
> |
|
874 |
|
assertTrue((s = lock.tryReadLock()) != 0L); |
875 |
|
assertTrue(lock.validate(s)); |
876 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
877 |
|
assertTrue(lock.validate(p)); |
878 |
+ |
assertTrue(lock.isWriteLocked()); |
879 |
|
lock.unlockWrite(p); |
880 |
+ |
|
881 |
|
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
882 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
883 |
|
assertTrue(lock.validate(p)); |
884 |
+ |
assertTrue(lock.isWriteLocked()); |
885 |
|
lock.unlockWrite(p); |
886 |
+ |
|
887 |
|
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
888 |
|
assertTrue(lock.validate(s)); |
889 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
890 |
|
assertTrue(lock.validate(p)); |
891 |
+ |
assertTrue(lock.isWriteLocked()); |
892 |
|
lock.unlockWrite(p); |
893 |
|
} |
894 |
|
|
938 |
|
assertTrue(lock.tryLock()); |
939 |
|
} |
940 |
|
|
941 |
+ |
/** |
942 |
+ |
* Lock.newCondition throws UnsupportedOperationException |
943 |
+ |
*/ |
944 |
+ |
public void testLockViewsDoNotSupportConditions() { |
945 |
+ |
StampedLock sl = new StampedLock(); |
946 |
+ |
assertThrows(UnsupportedOperationException.class, |
947 |
+ |
() -> sl.asWriteLock().newCondition(), |
948 |
+ |
() -> sl.asReadLock().newCondition(), |
949 |
+ |
() -> sl.asReadWriteLock().writeLock().newCondition(), |
950 |
+ |
() -> sl.asReadWriteLock().readLock().newCondition()); |
951 |
+ |
} |
952 |
+ |
|
953 |
+ |
/** |
954 |
+ |
* Passing optimistic read stamps to unlock operations result in |
955 |
+ |
* IllegalMonitorStateException |
956 |
+ |
*/ |
957 |
+ |
public void testCannotUnlockOptimisticReadStamps() { |
958 |
+ |
Runnable[] actions = { |
959 |
+ |
() -> { |
960 |
+ |
StampedLock sl = new StampedLock(); |
961 |
+ |
long stamp = sl.tryOptimisticRead(); |
962 |
+ |
assertTrue(stamp != 0); |
963 |
+ |
sl.unlockRead(stamp); |
964 |
+ |
}, |
965 |
+ |
() -> { |
966 |
+ |
StampedLock sl = new StampedLock(); |
967 |
+ |
long stamp = sl.tryOptimisticRead(); |
968 |
+ |
sl.unlock(stamp); |
969 |
+ |
}, |
970 |
+ |
|
971 |
+ |
() -> { |
972 |
+ |
StampedLock sl = new StampedLock(); |
973 |
+ |
long stamp = sl.tryOptimisticRead(); |
974 |
+ |
sl.writeLock(); |
975 |
+ |
sl.unlock(stamp); |
976 |
+ |
}, |
977 |
+ |
() -> { |
978 |
+ |
StampedLock sl = new StampedLock(); |
979 |
+ |
long stamp = sl.tryOptimisticRead(); |
980 |
+ |
sl.readLock(); |
981 |
+ |
sl.unlockRead(stamp); |
982 |
+ |
}, |
983 |
+ |
() -> { |
984 |
+ |
StampedLock sl = new StampedLock(); |
985 |
+ |
long stamp = sl.tryOptimisticRead(); |
986 |
+ |
sl.readLock(); |
987 |
+ |
sl.unlock(stamp); |
988 |
+ |
}, |
989 |
+ |
|
990 |
+ |
() -> { |
991 |
+ |
StampedLock sl = new StampedLock(); |
992 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
993 |
+ |
assertTrue(stamp != 0); |
994 |
+ |
sl.writeLock(); |
995 |
+ |
sl.unlockWrite(stamp); |
996 |
+ |
}, |
997 |
+ |
() -> { |
998 |
+ |
StampedLock sl = new StampedLock(); |
999 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1000 |
+ |
sl.writeLock(); |
1001 |
+ |
sl.unlock(stamp); |
1002 |
+ |
}, |
1003 |
+ |
() -> { |
1004 |
+ |
StampedLock sl = new StampedLock(); |
1005 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1006 |
+ |
sl.readLock(); |
1007 |
+ |
sl.unlockRead(stamp); |
1008 |
+ |
}, |
1009 |
+ |
() -> { |
1010 |
+ |
StampedLock sl = new StampedLock(); |
1011 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1012 |
+ |
sl.readLock(); |
1013 |
+ |
sl.unlock(stamp); |
1014 |
+ |
}, |
1015 |
+ |
|
1016 |
+ |
() -> { |
1017 |
+ |
StampedLock sl = new StampedLock(); |
1018 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1019 |
+ |
assertTrue(stamp != 0); |
1020 |
+ |
sl.writeLock(); |
1021 |
+ |
sl.unlockWrite(stamp); |
1022 |
+ |
}, |
1023 |
+ |
() -> { |
1024 |
+ |
StampedLock sl = new StampedLock(); |
1025 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1026 |
+ |
sl.writeLock(); |
1027 |
+ |
sl.unlock(stamp); |
1028 |
+ |
}, |
1029 |
+ |
() -> { |
1030 |
+ |
StampedLock sl = new StampedLock(); |
1031 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1032 |
+ |
sl.readLock(); |
1033 |
+ |
sl.unlockRead(stamp); |
1034 |
+ |
}, |
1035 |
+ |
() -> { |
1036 |
+ |
StampedLock sl = new StampedLock(); |
1037 |
+ |
sl.readLock(); |
1038 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1039 |
+ |
assertTrue(stamp != 0); |
1040 |
+ |
sl.readLock(); |
1041 |
+ |
sl.unlockRead(stamp); |
1042 |
+ |
}, |
1043 |
+ |
() -> { |
1044 |
+ |
StampedLock sl = new StampedLock(); |
1045 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1046 |
+ |
sl.readLock(); |
1047 |
+ |
sl.unlock(stamp); |
1048 |
+ |
}, |
1049 |
+ |
() -> { |
1050 |
+ |
StampedLock sl = new StampedLock(); |
1051 |
+ |
sl.readLock(); |
1052 |
+ |
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1053 |
+ |
sl.readLock(); |
1054 |
+ |
sl.unlock(stamp); |
1055 |
+ |
}, |
1056 |
+ |
}; |
1057 |
+ |
|
1058 |
+ |
assertThrows(IllegalMonitorStateException.class, actions); |
1059 |
+ |
} |
1060 |
+ |
|
1061 |
+ |
static long writeLockInterruptiblyUninterrupted(StampedLock sl) { |
1062 |
+ |
try { return sl.writeLockInterruptibly(); } |
1063 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1064 |
+ |
} |
1065 |
+ |
|
1066 |
+ |
static long tryWriteLockUninterrupted(StampedLock sl, long time, TimeUnit unit) { |
1067 |
+ |
try { return sl.tryWriteLock(time, unit); } |
1068 |
+ |
catch (InterruptedException ex) { throw new AssertionError(ex); } |
1069 |
+ |
} |
1070 |
+ |
|
1071 |
+ |
/** |
1072 |
+ |
* Invalid write stamps result in IllegalMonitorStateException |
1073 |
+ |
*/ |
1074 |
+ |
public void testInvalidWriteStampsThrowIllegalMonitorStateException() { |
1075 |
+ |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
1076 |
+ |
writeLockers.add((sl) -> sl.writeLock()); |
1077 |
+ |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
1078 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1079 |
+ |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0, DAYS)); |
1080 |
+ |
|
1081 |
+ |
List<Consumer<StampedLock>> mutaters = new ArrayList<>(); |
1082 |
+ |
mutaters.add((sl) -> {}); |
1083 |
+ |
mutaters.add((sl) -> sl.readLock()); |
1084 |
+ |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1085 |
+ |
mutaters.add((sl) -> writeLocker.apply(sl)); |
1086 |
+ |
|
1087 |
+ |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
1088 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
1089 |
+ |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
1090 |
+ |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
1091 |
+ |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1092 |
+ |
|
1093 |
+ |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1094 |
+ |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers) |
1095 |
+ |
for (Consumer<StampedLock> mutater : mutaters) { |
1096 |
+ |
StampedLock sl = new StampedLock(); |
1097 |
+ |
long stamp = writeLocker.apply(sl); |
1098 |
+ |
assertTrue(stamp != 0L); |
1099 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1100 |
+ |
() -> sl.unlockRead(stamp)); |
1101 |
+ |
writeUnlocker.accept(sl, stamp); |
1102 |
+ |
mutater.accept(sl); |
1103 |
+ |
assertThrows(IllegalMonitorStateException.class, |
1104 |
+ |
() -> sl.unlock(stamp), |
1105 |
+ |
() -> sl.unlockRead(stamp), |
1106 |
+ |
() -> sl.unlockWrite(stamp)); |
1107 |
+ |
} |
1108 |
+ |
} |
1109 |
+ |
|
1110 |
|
} |