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import static java.util.concurrent.TimeUnit.DAYS; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Future; |
16 |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.locks.Lock; |
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import java.util.concurrent.locks.StampedLock; |
32 |
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} |
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|
34 |
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/** |
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* A runnable calling writeLockInterruptibly |
34 |
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*/ |
35 |
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class InterruptibleLockRunnable extends CheckedRunnable { |
36 |
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final StampedLock lock; |
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InterruptibleLockRunnable(StampedLock l) { lock = l; } |
38 |
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public void realRun() throws InterruptedException { |
39 |
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lock.writeLockInterruptibly(); |
40 |
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} |
41 |
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} |
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|
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/** |
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* A runnable calling writeLockInterruptibly that expects to be |
45 |
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* interrupted |
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*/ |
47 |
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class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
48 |
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final StampedLock lock; |
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InterruptedLockRunnable(StampedLock l) { lock = l; } |
50 |
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public void realRun() throws InterruptedException { |
51 |
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lock.writeLockInterruptibly(); |
52 |
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} |
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} |
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|
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/** |
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* Releases write lock, checking isWriteLocked before and after |
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*/ |
37 |
< |
void releaseWriteLock(StampedLock lock, long s) { |
37 |
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void releaseWriteLock(StampedLock lock, long stamp) { |
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assertTrue(lock.isWriteLocked()); |
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lock.unlockWrite(s); |
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> |
assertValid(lock, stamp); |
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lock.unlockWrite(stamp); |
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assertFalse(lock.isWriteLocked()); |
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assertFalse(lock.validate(stamp)); |
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} |
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|
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/** |
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* Constructed StampedLock is in unlocked state |
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* Releases read lock, checking isReadLocked before and after |
47 |
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*/ |
48 |
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public void testConstructor() { |
49 |
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StampedLock lock; |
50 |
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lock = new StampedLock(); |
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assertFalse(lock.isWriteLocked()); |
48 |
> |
void releaseReadLock(StampedLock lock, long stamp) { |
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assertTrue(lock.isReadLocked()); |
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assertValid(lock, stamp); |
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lock.unlockRead(stamp); |
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assertFalse(lock.isReadLocked()); |
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assertEquals(lock.getReadLockCount(), 0); |
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assertTrue(lock.validate(stamp)); |
54 |
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} |
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|
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/** |
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* write-locking and read-locking an unlocked lock succeed |
58 |
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*/ |
78 |
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public void testLock() { |
79 |
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StampedLock lock = new StampedLock(); |
80 |
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assertFalse(lock.isWriteLocked()); |
81 |
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assertFalse(lock.isReadLocked()); |
82 |
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assertEquals(lock.getReadLockCount(), 0); |
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long s = lock.writeLock(); |
84 |
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assertTrue(lock.isWriteLocked()); |
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assertFalse(lock.isReadLocked()); |
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assertEquals(lock.getReadLockCount(), 0); |
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lock.unlockWrite(s); |
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assertFalse(lock.isWriteLocked()); |
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assertFalse(lock.isReadLocked()); |
90 |
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assertEquals(lock.getReadLockCount(), 0); |
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long rs = lock.readLock(); |
92 |
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assertFalse(lock.isWriteLocked()); |
93 |
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assertTrue(lock.isReadLocked()); |
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< |
assertEquals(lock.getReadLockCount(), 1); |
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lock.unlockRead(rs); |
96 |
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assertFalse(lock.isWriteLocked()); |
97 |
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assertFalse(lock.isReadLocked()); |
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assertEquals(lock.getReadLockCount(), 0); |
56 |
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long assertNonZero(long v) { |
57 |
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assertTrue(v != 0L); |
58 |
> |
return v; |
59 |
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} |
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|
61 |
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/** |
62 |
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* unlock releases either a read or write lock |
63 |
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*/ |
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public void testUnlock() { |
105 |
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StampedLock lock = new StampedLock(); |
106 |
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assertFalse(lock.isWriteLocked()); |
107 |
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assertFalse(lock.isReadLocked()); |
108 |
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assertEquals(lock.getReadLockCount(), 0); |
109 |
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long s = lock.writeLock(); |
110 |
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assertTrue(lock.isWriteLocked()); |
111 |
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assertFalse(lock.isReadLocked()); |
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assertEquals(lock.getReadLockCount(), 0); |
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lock.unlock(s); |
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assertFalse(lock.isWriteLocked()); |
115 |
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assertFalse(lock.isReadLocked()); |
116 |
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assertEquals(lock.getReadLockCount(), 0); |
117 |
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long rs = lock.readLock(); |
118 |
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assertFalse(lock.isWriteLocked()); |
119 |
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assertTrue(lock.isReadLocked()); |
120 |
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assertEquals(lock.getReadLockCount(), 1); |
121 |
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lock.unlock(rs); |
122 |
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assertFalse(lock.isWriteLocked()); |
123 |
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assertFalse(lock.isReadLocked()); |
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assertEquals(lock.getReadLockCount(), 0); |
61 |
> |
long assertValid(StampedLock lock, long stamp) { |
62 |
> |
assertTrue(stamp != 0L); |
63 |
> |
assertTrue(lock.validate(stamp)); |
64 |
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return stamp; |
65 |
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} |
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|
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/** |
128 |
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* tryUnlockRead/Write succeeds if locked in associated mode else |
129 |
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* returns false |
130 |
< |
*/ |
131 |
< |
public void testTryUnlock() { |
132 |
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StampedLock lock = new StampedLock(); |
133 |
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assertFalse(lock.isWriteLocked()); |
67 |
> |
void assertUnlocked(StampedLock lock) { |
68 |
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assertFalse(lock.isReadLocked()); |
135 |
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assertEquals(lock.getReadLockCount(), 0); |
136 |
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long s = lock.writeLock(); |
137 |
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assertTrue(lock.isWriteLocked()); |
138 |
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assertFalse(lock.isReadLocked()); |
139 |
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assertEquals(lock.getReadLockCount(), 0); |
140 |
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assertFalse(lock.tryUnlockRead()); |
141 |
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assertTrue(lock.tryUnlockWrite()); |
142 |
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assertFalse(lock.tryUnlockWrite()); |
143 |
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assertFalse(lock.tryUnlockRead()); |
144 |
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assertFalse(lock.isWriteLocked()); |
145 |
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assertFalse(lock.isReadLocked()); |
146 |
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assertEquals(lock.getReadLockCount(), 0); |
147 |
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long rs = lock.readLock(); |
148 |
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assertFalse(lock.isWriteLocked()); |
149 |
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assertTrue(lock.isReadLocked()); |
150 |
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assertEquals(lock.getReadLockCount(), 1); |
151 |
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assertFalse(lock.tryUnlockWrite()); |
152 |
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assertTrue(lock.tryUnlockRead()); |
153 |
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assertFalse(lock.tryUnlockRead()); |
154 |
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assertFalse(lock.tryUnlockWrite()); |
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assertFalse(lock.isWriteLocked()); |
70 |
< |
assertFalse(lock.isReadLocked()); |
71 |
< |
assertEquals(lock.getReadLockCount(), 0); |
70 |
> |
assertEquals(0, lock.getReadLockCount()); |
71 |
> |
assertValid(lock, lock.tryOptimisticRead()); |
72 |
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} |
73 |
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|
74 |
< |
/** |
75 |
< |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
76 |
< |
*/ |
77 |
< |
public void testWriteUnlock_IMSE() { |
78 |
< |
StampedLock lock = new StampedLock(); |
79 |
< |
try { |
80 |
< |
lock.unlockWrite(0L); |
81 |
< |
shouldThrow(); |
82 |
< |
} catch (IllegalMonitorStateException success) {} |
74 |
> |
List<Action> lockLockers(Lock lock) { |
75 |
> |
List<Action> lockers = new ArrayList<>(); |
76 |
> |
lockers.add(() -> lock.lock()); |
77 |
> |
lockers.add(() -> lock.lockInterruptibly()); |
78 |
> |
lockers.add(() -> lock.tryLock()); |
79 |
> |
lockers.add(() -> lock.tryLock(Long.MIN_VALUE, DAYS)); |
80 |
> |
lockers.add(() -> lock.tryLock(0L, DAYS)); |
81 |
> |
lockers.add(() -> lock.tryLock(Long.MAX_VALUE, DAYS)); |
82 |
> |
return lockers; |
83 |
> |
} |
84 |
> |
|
85 |
> |
List<Function<StampedLock, Long>> readLockers() { |
86 |
> |
List<Function<StampedLock, Long>> readLockers = new ArrayList<>(); |
87 |
> |
readLockers.add((sl) -> sl.readLock()); |
88 |
> |
readLockers.add((sl) -> sl.tryReadLock()); |
89 |
> |
readLockers.add((sl) -> readLockInterruptiblyUninterrupted(sl)); |
90 |
> |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
91 |
> |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, 0L, DAYS)); |
92 |
> |
readLockers.add((sl) -> sl.tryConvertToReadLock(sl.tryOptimisticRead())); |
93 |
> |
return readLockers; |
94 |
> |
} |
95 |
> |
|
96 |
> |
List<BiConsumer<StampedLock, Long>> readUnlockers() { |
97 |
> |
List<BiConsumer<StampedLock, Long>> readUnlockers = new ArrayList<>(); |
98 |
> |
readUnlockers.add((sl, stamp) -> sl.unlockRead(stamp)); |
99 |
> |
readUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockRead())); |
100 |
> |
readUnlockers.add((sl, stamp) -> sl.asReadLock().unlock()); |
101 |
> |
readUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
102 |
> |
readUnlockers.add((sl, stamp) -> assertValid(sl, sl.tryConvertToOptimisticRead(stamp))); |
103 |
> |
return readUnlockers; |
104 |
> |
} |
105 |
> |
|
106 |
> |
List<Function<StampedLock, Long>> writeLockers() { |
107 |
> |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
108 |
> |
writeLockers.add((sl) -> sl.writeLock()); |
109 |
> |
writeLockers.add((sl) -> sl.tryWriteLock()); |
110 |
> |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
111 |
> |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
112 |
> |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0L, DAYS)); |
113 |
> |
writeLockers.add((sl) -> sl.tryConvertToWriteLock(sl.tryOptimisticRead())); |
114 |
> |
return writeLockers; |
115 |
> |
} |
116 |
> |
|
117 |
> |
List<BiConsumer<StampedLock, Long>> writeUnlockers() { |
118 |
> |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
119 |
> |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
120 |
> |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
121 |
> |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
122 |
> |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
123 |
> |
writeUnlockers.add((sl, stamp) -> assertValid(sl, sl.tryConvertToOptimisticRead(stamp))); |
124 |
> |
return writeUnlockers; |
125 |
|
} |
126 |
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|
127 |
|
/** |
128 |
< |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
128 |
> |
* Constructed StampedLock is in unlocked state |
129 |
|
*/ |
130 |
< |
public void testWriteUnlock_IMSE2() { |
131 |
< |
StampedLock lock = new StampedLock(); |
176 |
< |
long s = lock.writeLock(); |
177 |
< |
lock.unlockWrite(s); |
178 |
< |
try { |
179 |
< |
lock.unlockWrite(s); |
180 |
< |
shouldThrow(); |
181 |
< |
} catch (IllegalMonitorStateException success) {} |
130 |
> |
public void testConstructor() { |
131 |
> |
assertUnlocked(new StampedLock()); |
132 |
|
} |
133 |
|
|
134 |
|
/** |
135 |
< |
* write-unlocking after readlock throws IllegalMonitorStateException |
135 |
> |
* write-locking, then unlocking, an unlocked lock succeed |
136 |
|
*/ |
137 |
< |
public void testWriteUnlock_IMSE3() { |
137 |
> |
public void testWriteLock_lockUnlock() { |
138 |
|
StampedLock lock = new StampedLock(); |
139 |
< |
long s = lock.readLock(); |
140 |
< |
try { |
141 |
< |
lock.unlockWrite(s); |
142 |
< |
shouldThrow(); |
143 |
< |
} catch (IllegalMonitorStateException success) {} |
139 |
> |
|
140 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) |
141 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
142 |
> |
assertFalse(lock.isWriteLocked()); |
143 |
> |
assertFalse(lock.isReadLocked()); |
144 |
> |
assertEquals(0, lock.getReadLockCount()); |
145 |
> |
|
146 |
> |
long s = writeLocker.apply(lock); |
147 |
> |
assertValid(lock, s); |
148 |
> |
assertTrue(lock.isWriteLocked()); |
149 |
> |
assertFalse(lock.isReadLocked()); |
150 |
> |
assertEquals(0, lock.getReadLockCount()); |
151 |
> |
writeUnlocker.accept(lock, s); |
152 |
> |
assertUnlocked(lock); |
153 |
> |
} |
154 |
|
} |
155 |
|
|
156 |
|
/** |
157 |
< |
* read-unlocking an unlocked lock throws IllegalMonitorStateException |
157 |
> |
* read-locking, then unlocking, an unlocked lock succeed |
158 |
|
*/ |
159 |
< |
public void testReadUnlock_IMSE() { |
159 |
> |
public void testReadLock_lockUnlock() { |
160 |
|
StampedLock lock = new StampedLock(); |
161 |
< |
long s = lock.readLock(); |
162 |
< |
lock.unlockRead(s); |
163 |
< |
try { |
164 |
< |
lock.unlockRead(s); |
165 |
< |
shouldThrow(); |
166 |
< |
} catch (IllegalMonitorStateException success) {} |
161 |
> |
|
162 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) |
163 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
164 |
> |
long s = 42; |
165 |
> |
for (int i = 0; i < 2; i++) { |
166 |
> |
s = assertValid(lock, readLocker.apply(lock)); |
167 |
> |
assertFalse(lock.isWriteLocked()); |
168 |
> |
assertTrue(lock.isReadLocked()); |
169 |
> |
assertEquals(i + 1, lock.getReadLockCount()); |
170 |
> |
} |
171 |
> |
for (int i = 0; i < 2; i++) { |
172 |
> |
assertFalse(lock.isWriteLocked()); |
173 |
> |
assertTrue(lock.isReadLocked()); |
174 |
> |
assertEquals(2 - i, lock.getReadLockCount()); |
175 |
> |
readUnlocker.accept(lock, s); |
176 |
> |
} |
177 |
> |
assertUnlocked(lock); |
178 |
> |
} |
179 |
|
} |
180 |
|
|
181 |
|
/** |
182 |
< |
* read-unlocking an unlocked lock throws IllegalMonitorStateException |
182 |
> |
* tryUnlockWrite fails if not write locked |
183 |
|
*/ |
184 |
< |
public void testReadUnlock_IMSE2() { |
184 |
> |
public void testTryUnlockWrite_failure() { |
185 |
|
StampedLock lock = new StampedLock(); |
186 |
< |
try { |
187 |
< |
lock.unlockRead(0L); |
188 |
< |
shouldThrow(); |
189 |
< |
} catch (IllegalMonitorStateException success) {} |
186 |
> |
assertFalse(lock.tryUnlockWrite()); |
187 |
> |
|
188 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) |
189 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
190 |
> |
long s = assertValid(lock, readLocker.apply(lock)); |
191 |
> |
assertFalse(lock.tryUnlockWrite()); |
192 |
> |
assertTrue(lock.isReadLocked()); |
193 |
> |
readUnlocker.accept(lock, s); |
194 |
> |
assertUnlocked(lock); |
195 |
> |
} |
196 |
|
} |
197 |
|
|
198 |
|
/** |
199 |
< |
* read-unlocking after writeLock throws IllegalMonitorStateException |
199 |
> |
* tryUnlockRead fails if not read locked |
200 |
|
*/ |
201 |
< |
public void testReadUnlock_IMSE3() { |
201 |
> |
public void testTryUnlockRead_failure() { |
202 |
|
StampedLock lock = new StampedLock(); |
203 |
< |
long s = lock.writeLock(); |
204 |
< |
try { |
205 |
< |
lock.unlockRead(s); |
206 |
< |
shouldThrow(); |
207 |
< |
} catch (IllegalMonitorStateException success) {} |
203 |
> |
assertFalse(lock.tryUnlockRead()); |
204 |
> |
|
205 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) |
206 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
207 |
> |
long s = writeLocker.apply(lock); |
208 |
> |
assertFalse(lock.tryUnlockRead()); |
209 |
> |
assertTrue(lock.isWriteLocked()); |
210 |
> |
writeUnlocker.accept(lock, s); |
211 |
> |
assertUnlocked(lock); |
212 |
> |
} |
213 |
|
} |
214 |
|
|
215 |
|
/** |
216 |
< |
* validate(0) fails |
216 |
> |
* validate(0L) fails |
217 |
|
*/ |
218 |
|
public void testValidate0() { |
219 |
|
StampedLock lock = new StampedLock(); |
221 |
|
} |
222 |
|
|
223 |
|
/** |
224 |
< |
* A stamp obtained from a successful lock operation validates |
224 |
> |
* A stamp obtained from a successful lock operation validates while the lock is held |
225 |
|
*/ |
226 |
|
public void testValidate() throws InterruptedException { |
227 |
|
StampedLock lock = new StampedLock(); |
228 |
< |
long s = lock.writeLock(); |
229 |
< |
assertTrue(lock.validate(s)); |
230 |
< |
lock.unlockWrite(s); |
231 |
< |
s = lock.readLock(); |
232 |
< |
assertTrue(lock.validate(s)); |
233 |
< |
lock.unlockRead(s); |
234 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
235 |
< |
assertTrue(lock.validate(s)); |
236 |
< |
lock.unlockWrite(s); |
237 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
238 |
< |
assertTrue(lock.validate(s)); |
239 |
< |
lock.unlockRead(s); |
240 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
241 |
< |
assertTrue(lock.validate(s)); |
259 |
< |
lock.unlockWrite(s); |
260 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
261 |
< |
assertTrue(lock.validate(s)); |
262 |
< |
lock.unlockRead(s); |
263 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
228 |
> |
|
229 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) |
230 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
231 |
> |
long s = assertNonZero(readLocker.apply(lock)); |
232 |
> |
assertTrue(lock.validate(s)); |
233 |
> |
readUnlocker.accept(lock, s); |
234 |
> |
} |
235 |
> |
|
236 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) |
237 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
238 |
> |
long s = assertNonZero(writeLocker.apply(lock)); |
239 |
> |
assertTrue(lock.validate(s)); |
240 |
> |
writeUnlocker.accept(lock, s); |
241 |
> |
} |
242 |
|
} |
243 |
|
|
244 |
|
/** |
246 |
|
*/ |
247 |
|
public void testValidate2() throws InterruptedException { |
248 |
|
StampedLock lock = new StampedLock(); |
249 |
< |
long s; |
272 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
249 |
> |
long s = assertNonZero(lock.writeLock()); |
250 |
|
assertTrue(lock.validate(s)); |
251 |
|
assertFalse(lock.validate(lock.tryWriteLock())); |
252 |
< |
assertFalse(lock.validate(lock.tryWriteLock(10L, MILLISECONDS))); |
252 |
> |
assertFalse(lock.validate(lock.tryWriteLock(0L, SECONDS))); |
253 |
|
assertFalse(lock.validate(lock.tryReadLock())); |
254 |
< |
assertFalse(lock.validate(lock.tryReadLock(10L, MILLISECONDS))); |
254 |
> |
assertFalse(lock.validate(lock.tryReadLock(0L, SECONDS))); |
255 |
|
assertFalse(lock.validate(lock.tryOptimisticRead())); |
256 |
|
lock.unlockWrite(s); |
257 |
|
} |
258 |
|
|
259 |
+ |
void assertThrowInterruptedExceptionWhenPreInterrupted(Action[] actions) { |
260 |
+ |
for (Action action : actions) { |
261 |
+ |
Thread.currentThread().interrupt(); |
262 |
+ |
try { |
263 |
+ |
action.run(); |
264 |
+ |
shouldThrow(); |
265 |
+ |
} |
266 |
+ |
catch (InterruptedException success) {} |
267 |
+ |
catch (Throwable fail) { threadUnexpectedException(fail); } |
268 |
+ |
assertFalse(Thread.interrupted()); |
269 |
+ |
} |
270 |
+ |
} |
271 |
+ |
|
272 |
|
/** |
273 |
< |
* writeLockInterruptibly is interruptible |
273 |
> |
* interruptible operations throw InterruptedException when pre-interrupted |
274 |
|
*/ |
275 |
< |
public void testWriteLockInterruptibly_Interruptible() |
286 |
< |
throws InterruptedException { |
275 |
> |
public void testInterruptibleOperationsThrowInterruptedExceptionWhenPreInterrupted() { |
276 |
|
final CountDownLatch running = new CountDownLatch(1); |
277 |
|
final StampedLock lock = new StampedLock(); |
289 |
– |
long s = lock.writeLock(); |
290 |
– |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
291 |
– |
public void realRun() throws InterruptedException { |
292 |
– |
running.countDown(); |
293 |
– |
lock.writeLockInterruptibly(); |
294 |
– |
}}); |
278 |
|
|
279 |
< |
running.await(); |
280 |
< |
waitForThreadToEnterWaitState(t, 100); |
281 |
< |
t.interrupt(); |
282 |
< |
awaitTermination(t); |
283 |
< |
releaseWriteLock(lock, s); |
279 |
> |
Action[] interruptibleLockActions = { |
280 |
> |
() -> lock.writeLockInterruptibly(), |
281 |
> |
() -> lock.tryWriteLock(Long.MIN_VALUE, DAYS), |
282 |
> |
() -> lock.tryWriteLock(Long.MAX_VALUE, DAYS), |
283 |
> |
() -> lock.readLockInterruptibly(), |
284 |
> |
() -> lock.tryReadLock(Long.MIN_VALUE, DAYS), |
285 |
> |
() -> lock.tryReadLock(Long.MAX_VALUE, DAYS), |
286 |
> |
() -> lock.asWriteLock().lockInterruptibly(), |
287 |
> |
() -> lock.asWriteLock().tryLock(0L, DAYS), |
288 |
> |
() -> lock.asWriteLock().tryLock(Long.MAX_VALUE, DAYS), |
289 |
> |
() -> lock.asReadLock().lockInterruptibly(), |
290 |
> |
() -> lock.asReadLock().tryLock(0L, DAYS), |
291 |
> |
() -> lock.asReadLock().tryLock(Long.MAX_VALUE, DAYS), |
292 |
> |
}; |
293 |
> |
shuffle(interruptibleLockActions); |
294 |
> |
|
295 |
> |
assertThrowInterruptedExceptionWhenPreInterrupted(interruptibleLockActions); |
296 |
> |
{ |
297 |
> |
long s = lock.writeLock(); |
298 |
> |
assertThrowInterruptedExceptionWhenPreInterrupted(interruptibleLockActions); |
299 |
> |
lock.unlockWrite(s); |
300 |
> |
} |
301 |
> |
{ |
302 |
> |
long s = lock.readLock(); |
303 |
> |
assertThrowInterruptedExceptionWhenPreInterrupted(interruptibleLockActions); |
304 |
> |
lock.unlockRead(s); |
305 |
> |
} |
306 |
> |
} |
307 |
> |
|
308 |
> |
void assertThrowInterruptedExceptionWhenInterrupted(Action[] actions) { |
309 |
> |
int n = actions.length; |
310 |
> |
Future<?>[] futures = new Future<?>[n]; |
311 |
> |
CountDownLatch threadsStarted = new CountDownLatch(n); |
312 |
> |
CountDownLatch done = new CountDownLatch(n); |
313 |
> |
|
314 |
> |
for (int i = 0; i < n; i++) { |
315 |
> |
Action action = actions[i]; |
316 |
> |
futures[i] = cachedThreadPool.submit(new CheckedRunnable() { |
317 |
> |
public void realRun() throws Throwable { |
318 |
> |
threadsStarted.countDown(); |
319 |
> |
try { |
320 |
> |
action.run(); |
321 |
> |
shouldThrow(); |
322 |
> |
} |
323 |
> |
catch (InterruptedException success) {} |
324 |
> |
catch (Throwable fail) { threadUnexpectedException(fail); } |
325 |
> |
assertFalse(Thread.interrupted()); |
326 |
> |
done.countDown(); |
327 |
> |
}}); |
328 |
> |
} |
329 |
> |
|
330 |
> |
await(threadsStarted); |
331 |
> |
assertEquals(n, done.getCount()); |
332 |
> |
for (Future<?> future : futures) // Interrupt all the tasks |
333 |
> |
future.cancel(true); |
334 |
> |
await(done); |
335 |
|
} |
336 |
|
|
337 |
|
/** |
338 |
< |
* timed tryWriteLock is interruptible |
338 |
> |
* interruptible operations throw InterruptedException when write locked and interrupted |
339 |
|
*/ |
340 |
< |
public void testWriteTryLock_Interruptible() throws InterruptedException { |
340 |
> |
public void testInterruptibleOperationsThrowInterruptedExceptionWriteLockedInterrupted() { |
341 |
|
final CountDownLatch running = new CountDownLatch(1); |
342 |
|
final StampedLock lock = new StampedLock(); |
343 |
|
long s = lock.writeLock(); |
310 |
– |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
311 |
– |
public void realRun() throws InterruptedException { |
312 |
– |
running.countDown(); |
313 |
– |
lock.tryWriteLock(2 * LONG_DELAY_MS, MILLISECONDS); |
314 |
– |
}}); |
344 |
|
|
345 |
< |
running.await(); |
346 |
< |
waitForThreadToEnterWaitState(t, 100); |
347 |
< |
t.interrupt(); |
348 |
< |
awaitTermination(t); |
349 |
< |
releaseWriteLock(lock, s); |
345 |
> |
Action[] interruptibleLockBlockingActions = { |
346 |
> |
() -> lock.writeLockInterruptibly(), |
347 |
> |
() -> lock.tryWriteLock(Long.MAX_VALUE, DAYS), |
348 |
> |
() -> lock.readLockInterruptibly(), |
349 |
> |
() -> lock.tryReadLock(Long.MAX_VALUE, DAYS), |
350 |
> |
() -> lock.asWriteLock().lockInterruptibly(), |
351 |
> |
() -> lock.asWriteLock().tryLock(Long.MAX_VALUE, DAYS), |
352 |
> |
() -> lock.asReadLock().lockInterruptibly(), |
353 |
> |
() -> lock.asReadLock().tryLock(Long.MAX_VALUE, DAYS), |
354 |
> |
}; |
355 |
> |
shuffle(interruptibleLockBlockingActions); |
356 |
> |
|
357 |
> |
assertThrowInterruptedExceptionWhenInterrupted(interruptibleLockBlockingActions); |
358 |
|
} |
359 |
|
|
360 |
|
/** |
361 |
< |
* readLockInterruptibly is interruptible |
361 |
> |
* interruptible operations throw InterruptedException when read locked and interrupted |
362 |
|
*/ |
363 |
< |
public void testReadLockInterruptibly_Interruptible() |
327 |
< |
throws InterruptedException { |
363 |
> |
public void testInterruptibleOperationsThrowInterruptedExceptionReadLockedInterrupted() { |
364 |
|
final CountDownLatch running = new CountDownLatch(1); |
365 |
|
final StampedLock lock = new StampedLock(); |
366 |
< |
long s = lock.writeLock(); |
331 |
< |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
332 |
< |
public void realRun() throws InterruptedException { |
333 |
< |
running.countDown(); |
334 |
< |
lock.readLockInterruptibly(); |
335 |
< |
}}); |
366 |
> |
long s = lock.readLock(); |
367 |
|
|
368 |
< |
running.await(); |
369 |
< |
waitForThreadToEnterWaitState(t, 100); |
370 |
< |
t.interrupt(); |
371 |
< |
awaitTermination(t); |
372 |
< |
releaseWriteLock(lock, s); |
368 |
> |
Action[] interruptibleLockBlockingActions = { |
369 |
> |
() -> lock.writeLockInterruptibly(), |
370 |
> |
() -> lock.tryWriteLock(Long.MAX_VALUE, DAYS), |
371 |
> |
() -> lock.asWriteLock().lockInterruptibly(), |
372 |
> |
() -> lock.asWriteLock().tryLock(Long.MAX_VALUE, DAYS), |
373 |
> |
}; |
374 |
> |
shuffle(interruptibleLockBlockingActions); |
375 |
> |
|
376 |
> |
assertThrowInterruptedExceptionWhenInterrupted(interruptibleLockBlockingActions); |
377 |
|
} |
378 |
|
|
379 |
|
/** |
380 |
< |
* timed tryReadLock is interruptible |
380 |
> |
* Non-interruptible operations ignore and preserve interrupt status |
381 |
|
*/ |
382 |
< |
public void testReadTryLock_Interruptible() throws InterruptedException { |
348 |
< |
final CountDownLatch running = new CountDownLatch(1); |
382 |
> |
public void testNonInterruptibleOperationsIgnoreInterrupts() { |
383 |
|
final StampedLock lock = new StampedLock(); |
384 |
< |
long s = lock.writeLock(); |
351 |
< |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
352 |
< |
public void realRun() throws InterruptedException { |
353 |
< |
running.countDown(); |
354 |
< |
lock.tryReadLock(2 * LONG_DELAY_MS, MILLISECONDS); |
355 |
< |
}}); |
384 |
> |
Thread.currentThread().interrupt(); |
385 |
|
|
386 |
< |
running.await(); |
387 |
< |
waitForThreadToEnterWaitState(t, 100); |
388 |
< |
t.interrupt(); |
389 |
< |
awaitTermination(t); |
390 |
< |
releaseWriteLock(lock, s); |
386 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
387 |
> |
long s = assertValid(lock, lock.readLock()); |
388 |
> |
readUnlocker.accept(lock, s); |
389 |
> |
s = assertValid(lock, lock.tryReadLock()); |
390 |
> |
readUnlocker.accept(lock, s); |
391 |
> |
} |
392 |
> |
|
393 |
> |
lock.asReadLock().lock(); |
394 |
> |
lock.asReadLock().unlock(); |
395 |
> |
|
396 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
397 |
> |
long s = assertValid(lock, lock.writeLock()); |
398 |
> |
writeUnlocker.accept(lock, s); |
399 |
> |
s = assertValid(lock, lock.tryWriteLock()); |
400 |
> |
writeUnlocker.accept(lock, s); |
401 |
> |
} |
402 |
> |
|
403 |
> |
lock.asWriteLock().lock(); |
404 |
> |
lock.asWriteLock().unlock(); |
405 |
> |
|
406 |
> |
assertTrue(Thread.interrupted()); |
407 |
|
} |
408 |
|
|
409 |
|
/** |
410 |
|
* tryWriteLock on an unlocked lock succeeds |
411 |
|
*/ |
412 |
< |
public void testWriteTryLock() { |
412 |
> |
public void testTryWriteLock() { |
413 |
|
final StampedLock lock = new StampedLock(); |
414 |
|
long s = lock.tryWriteLock(); |
415 |
|
assertTrue(s != 0L); |
416 |
|
assertTrue(lock.isWriteLocked()); |
417 |
< |
long s2 = lock.tryWriteLock(); |
373 |
< |
assertEquals(s2, 0L); |
417 |
> |
assertEquals(0L, lock.tryWriteLock()); |
418 |
|
releaseWriteLock(lock, s); |
419 |
|
} |
420 |
|
|
421 |
|
/** |
422 |
|
* tryWriteLock fails if locked |
423 |
|
*/ |
424 |
< |
public void testWriteTryLockWhenLocked() { |
424 |
> |
public void testTryWriteLockWhenLocked() { |
425 |
|
final StampedLock lock = new StampedLock(); |
426 |
|
long s = lock.writeLock(); |
427 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
428 |
|
public void realRun() { |
429 |
< |
long ws = lock.tryWriteLock(); |
386 |
< |
assertTrue(ws == 0L); |
429 |
> |
assertEquals(0L, lock.tryWriteLock()); |
430 |
|
}}); |
431 |
|
|
432 |
+ |
assertEquals(0L, lock.tryWriteLock()); |
433 |
|
awaitTermination(t); |
434 |
|
releaseWriteLock(lock, s); |
435 |
|
} |
437 |
|
/** |
438 |
|
* tryReadLock fails if write-locked |
439 |
|
*/ |
440 |
< |
public void testReadTryLockWhenLocked() { |
440 |
> |
public void testTryReadLockWhenLocked() { |
441 |
|
final StampedLock lock = new StampedLock(); |
442 |
|
long s = lock.writeLock(); |
443 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
444 |
|
public void realRun() { |
445 |
< |
long rs = lock.tryReadLock(); |
402 |
< |
assertEquals(rs, 0L); |
445 |
> |
assertEquals(0L, lock.tryReadLock()); |
446 |
|
}}); |
447 |
|
|
448 |
+ |
assertEquals(0L, lock.tryReadLock()); |
449 |
|
awaitTermination(t); |
450 |
|
releaseWriteLock(lock, s); |
451 |
|
} |
459 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
460 |
|
public void realRun() throws InterruptedException { |
461 |
|
long s2 = lock.tryReadLock(); |
462 |
< |
assertTrue(s2 != 0L); |
462 |
> |
assertValid(lock, s2); |
463 |
|
lock.unlockRead(s2); |
464 |
|
long s3 = lock.tryReadLock(LONG_DELAY_MS, MILLISECONDS); |
465 |
< |
assertTrue(s3 != 0L); |
465 |
> |
assertValid(lock, s3); |
466 |
|
lock.unlockRead(s3); |
467 |
|
long s4 = lock.readLock(); |
468 |
+ |
assertValid(lock, s4); |
469 |
|
lock.unlockRead(s4); |
470 |
+ |
lock.asReadLock().lock(); |
471 |
+ |
lock.asReadLock().unlock(); |
472 |
+ |
lock.asReadLock().lockInterruptibly(); |
473 |
+ |
lock.asReadLock().unlock(); |
474 |
+ |
lock.asReadLock().tryLock(Long.MIN_VALUE, DAYS); |
475 |
+ |
lock.asReadLock().unlock(); |
476 |
|
}}); |
477 |
|
|
478 |
|
awaitTermination(t); |
494 |
|
}}); |
495 |
|
|
496 |
|
running.await(); |
497 |
< |
waitForThreadToEnterWaitState(t, 100); |
497 |
> |
waitForThreadToEnterWaitState(t, MEDIUM_DELAY_MS); |
498 |
|
assertFalse(lock.isWriteLocked()); |
499 |
|
lock.unlockRead(rs); |
500 |
|
awaitTermination(t); |
521 |
|
lock.unlockWrite(ws); |
522 |
|
}}); |
523 |
|
|
524 |
+ |
assertTrue(lock.isReadLocked()); |
525 |
|
assertFalse(lock.isWriteLocked()); |
526 |
|
lock.unlockRead(s); |
527 |
|
awaitTermination(t2); |
533 |
|
*/ |
534 |
|
public void testReadAfterWriteLock() { |
535 |
|
final StampedLock lock = new StampedLock(); |
536 |
+ |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
537 |
|
final long s = lock.writeLock(); |
538 |
|
Thread t1 = newStartedThread(new CheckedRunnable() { |
539 |
|
public void realRun() { |
540 |
+ |
threadsStarted.countDown(); |
541 |
|
long rs = lock.readLock(); |
542 |
|
lock.unlockRead(rs); |
543 |
|
}}); |
544 |
|
Thread t2 = newStartedThread(new CheckedRunnable() { |
545 |
|
public void realRun() { |
546 |
+ |
threadsStarted.countDown(); |
547 |
|
long rs = lock.readLock(); |
548 |
|
lock.unlockRead(rs); |
549 |
|
}}); |
550 |
|
|
551 |
+ |
await(threadsStarted); |
552 |
+ |
waitForThreadToEnterWaitState(t1, MEDIUM_DELAY_MS); |
553 |
+ |
waitForThreadToEnterWaitState(t2, MEDIUM_DELAY_MS); |
554 |
|
releaseWriteLock(lock, s); |
555 |
|
awaitTermination(t1); |
556 |
|
awaitTermination(t2); |
557 |
|
} |
558 |
|
|
559 |
|
/** |
560 |
< |
* tryReadLock succeeds if readlocked but not writelocked |
560 |
> |
* tryReadLock succeeds if read locked but not write locked |
561 |
|
*/ |
562 |
|
public void testTryLockWhenReadLocked() { |
563 |
|
final StampedLock lock = new StampedLock(); |
565 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
566 |
|
public void realRun() { |
567 |
|
long rs = lock.tryReadLock(); |
568 |
< |
threadAssertTrue(rs != 0L); |
568 |
> |
assertValid(lock, rs); |
569 |
|
lock.unlockRead(rs); |
570 |
|
}}); |
571 |
|
|
574 |
|
} |
575 |
|
|
576 |
|
/** |
577 |
< |
* tryWriteLock fails when readlocked |
577 |
> |
* tryWriteLock fails when read locked |
578 |
|
*/ |
579 |
< |
public void testWriteTryLockWhenReadLocked() { |
579 |
> |
public void testTryWriteLockWhenReadLocked() { |
580 |
|
final StampedLock lock = new StampedLock(); |
581 |
|
long s = lock.readLock(); |
582 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
583 |
|
public void realRun() { |
584 |
< |
long ws = lock.tryWriteLock(); |
527 |
< |
threadAssertEquals(ws, 0L); |
584 |
> |
threadAssertEquals(0L, lock.tryWriteLock()); |
585 |
|
}}); |
586 |
|
|
587 |
|
awaitTermination(t); |
589 |
|
} |
590 |
|
|
591 |
|
/** |
592 |
< |
* timed tryWriteLock times out if locked |
592 |
> |
* timed lock operations time out if lock not available |
593 |
|
*/ |
594 |
< |
public void testWriteTryLock_Timeout() { |
594 |
> |
public void testTimedLock_Timeout() throws Exception { |
595 |
> |
ArrayList<Future<?>> futures = new ArrayList<>(); |
596 |
> |
|
597 |
> |
// Write locked |
598 |
|
final StampedLock lock = new StampedLock(); |
599 |
< |
long s = lock.writeLock(); |
600 |
< |
Thread t = newStartedThread(new CheckedRunnable() { |
599 |
> |
long stamp = lock.writeLock(); |
600 |
> |
assertEquals(0L, lock.tryReadLock(0L, DAYS)); |
601 |
> |
assertEquals(0L, lock.tryReadLock(Long.MIN_VALUE, DAYS)); |
602 |
> |
assertFalse(lock.asReadLock().tryLock(0L, DAYS)); |
603 |
> |
assertFalse(lock.asReadLock().tryLock(Long.MIN_VALUE, DAYS)); |
604 |
> |
assertEquals(0L, lock.tryWriteLock(0L, DAYS)); |
605 |
> |
assertEquals(0L, lock.tryWriteLock(Long.MIN_VALUE, DAYS)); |
606 |
> |
assertFalse(lock.asWriteLock().tryLock(0L, DAYS)); |
607 |
> |
assertFalse(lock.asWriteLock().tryLock(Long.MIN_VALUE, DAYS)); |
608 |
> |
|
609 |
> |
futures.add(cachedThreadPool.submit(new CheckedRunnable() { |
610 |
|
public void realRun() throws InterruptedException { |
611 |
|
long startTime = System.nanoTime(); |
612 |
< |
long timeoutMillis = 10; |
613 |
< |
long ws = lock.tryWriteLock(timeoutMillis, MILLISECONDS); |
614 |
< |
assertEquals(ws, 0L); |
546 |
< |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
547 |
< |
}}); |
612 |
> |
assertEquals(0L, lock.tryWriteLock(timeoutMillis(), MILLISECONDS)); |
613 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
614 |
> |
}})); |
615 |
|
|
616 |
< |
awaitTermination(t); |
617 |
< |
releaseWriteLock(lock, s); |
618 |
< |
} |
616 |
> |
futures.add(cachedThreadPool.submit(new CheckedRunnable() { |
617 |
> |
public void realRun() throws InterruptedException { |
618 |
> |
long startTime = System.nanoTime(); |
619 |
> |
assertEquals(0L, lock.tryReadLock(timeoutMillis(), MILLISECONDS)); |
620 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
621 |
> |
}})); |
622 |
> |
|
623 |
> |
// Read locked |
624 |
> |
final StampedLock lock2 = new StampedLock(); |
625 |
> |
long stamp2 = lock2.readLock(); |
626 |
> |
assertEquals(0L, lock2.tryWriteLock(0L, DAYS)); |
627 |
> |
assertEquals(0L, lock2.tryWriteLock(Long.MIN_VALUE, DAYS)); |
628 |
> |
assertFalse(lock2.asWriteLock().tryLock(0L, DAYS)); |
629 |
> |
assertFalse(lock2.asWriteLock().tryLock(Long.MIN_VALUE, DAYS)); |
630 |
|
|
631 |
< |
/** |
554 |
< |
* timed tryReadLock times out if write-locked |
555 |
< |
*/ |
556 |
< |
public void testReadTryLock_Timeout() { |
557 |
< |
final StampedLock lock = new StampedLock(); |
558 |
< |
long s = lock.writeLock(); |
559 |
< |
Thread t = newStartedThread(new CheckedRunnable() { |
631 |
> |
futures.add(cachedThreadPool.submit(new CheckedRunnable() { |
632 |
|
public void realRun() throws InterruptedException { |
633 |
|
long startTime = System.nanoTime(); |
634 |
< |
long timeoutMillis = 10; |
635 |
< |
long rs = lock.tryReadLock(timeoutMillis, MILLISECONDS); |
636 |
< |
assertEquals(rs, 0L); |
565 |
< |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
566 |
< |
}}); |
634 |
> |
assertEquals(0L, lock2.tryWriteLock(timeoutMillis(), MILLISECONDS)); |
635 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
636 |
> |
}})); |
637 |
|
|
638 |
< |
awaitTermination(t); |
639 |
< |
assertTrue(lock.isWriteLocked()); |
640 |
< |
lock.unlockWrite(s); |
638 |
> |
for (Future<?> future : futures) |
639 |
> |
assertNull(future.get()); |
640 |
> |
|
641 |
> |
releaseWriteLock(lock, stamp); |
642 |
> |
releaseReadLock(lock2, stamp2); |
643 |
|
} |
644 |
|
|
645 |
|
/** |
646 |
< |
* writeLockInterruptibly succeeds if unlocked, else is interruptible |
646 |
> |
* writeLockInterruptibly succeeds if unlocked |
647 |
|
*/ |
648 |
|
public void testWriteLockInterruptibly() throws InterruptedException { |
577 |
– |
final CountDownLatch running = new CountDownLatch(1); |
649 |
|
final StampedLock lock = new StampedLock(); |
650 |
|
long s = lock.writeLockInterruptibly(); |
580 |
– |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
581 |
– |
public void realRun() throws InterruptedException { |
582 |
– |
running.countDown(); |
583 |
– |
lock.writeLockInterruptibly(); |
584 |
– |
}}); |
585 |
– |
|
586 |
– |
running.await(); |
587 |
– |
waitForThreadToEnterWaitState(t, 100); |
588 |
– |
t.interrupt(); |
651 |
|
assertTrue(lock.isWriteLocked()); |
590 |
– |
awaitTermination(t); |
652 |
|
releaseWriteLock(lock, s); |
653 |
|
} |
654 |
|
|
655 |
|
/** |
656 |
< |
* readLockInterruptibly succeeds if lock free else is interruptible |
656 |
> |
* readLockInterruptibly succeeds if lock free |
657 |
|
*/ |
658 |
|
public void testReadLockInterruptibly() throws InterruptedException { |
598 |
– |
final CountDownLatch running = new CountDownLatch(1); |
659 |
|
final StampedLock lock = new StampedLock(); |
660 |
< |
long s; |
661 |
< |
s = lock.readLockInterruptibly(); |
660 |
> |
|
661 |
> |
long s = assertValid(lock, lock.readLockInterruptibly()); |
662 |
> |
assertTrue(lock.isReadLocked()); |
663 |
|
lock.unlockRead(s); |
603 |
– |
s = lock.writeLockInterruptibly(); |
604 |
– |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
605 |
– |
public void realRun() throws InterruptedException { |
606 |
– |
running.countDown(); |
607 |
– |
lock.readLockInterruptibly(); |
608 |
– |
}}); |
664 |
|
|
665 |
< |
running.await(); |
666 |
< |
waitForThreadToEnterWaitState(t, 100); |
667 |
< |
t.interrupt(); |
613 |
< |
awaitTermination(t); |
614 |
< |
releaseWriteLock(lock, s); |
665 |
> |
lock.asReadLock().lockInterruptibly(); |
666 |
> |
assertTrue(lock.isReadLocked()); |
667 |
> |
lock.asReadLock().unlock(); |
668 |
|
} |
669 |
|
|
670 |
|
/** |
696 |
|
} |
697 |
|
|
698 |
|
/** |
699 |
< |
* tryOptimisticRead succeeds and validates if unlocked, fails if locked |
699 |
> |
* tryOptimisticRead succeeds and validates if unlocked, fails if |
700 |
> |
* exclusively locked |
701 |
|
*/ |
702 |
|
public void testValidateOptimistic() throws InterruptedException { |
703 |
|
StampedLock lock = new StampedLock(); |
704 |
< |
long s, p; |
705 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
706 |
< |
assertTrue(lock.validate(p)); |
707 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
708 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
709 |
< |
assertTrue(lock.validate(s)); |
710 |
< |
lock.unlockWrite(s); |
711 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
712 |
< |
assertTrue(lock.validate(p)); |
713 |
< |
assertTrue((s = lock.readLock()) != 0L); |
714 |
< |
assertTrue(lock.validate(s)); |
715 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
716 |
< |
assertTrue(lock.validate(p)); |
717 |
< |
lock.unlockRead(s); |
718 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
719 |
< |
assertTrue(lock.validate(s)); |
720 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
667 |
< |
lock.unlockWrite(s); |
668 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
669 |
< |
assertTrue(lock.validate(s)); |
670 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
671 |
< |
lock.unlockRead(s); |
672 |
< |
assertTrue(lock.validate(p)); |
673 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
674 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
675 |
< |
assertTrue(lock.validate(s)); |
676 |
< |
lock.unlockWrite(s); |
677 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
678 |
< |
assertTrue(lock.validate(s)); |
679 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
680 |
< |
lock.unlockRead(s); |
681 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
704 |
> |
|
705 |
> |
assertValid(lock, lock.tryOptimisticRead()); |
706 |
> |
|
707 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) { |
708 |
> |
long s = assertValid(lock, writeLocker.apply(lock)); |
709 |
> |
assertEquals(0L, lock.tryOptimisticRead()); |
710 |
> |
releaseWriteLock(lock, s); |
711 |
> |
} |
712 |
> |
|
713 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) { |
714 |
> |
long s = assertValid(lock, readLocker.apply(lock)); |
715 |
> |
long p = assertValid(lock, lock.tryOptimisticRead()); |
716 |
> |
releaseReadLock(lock, s); |
717 |
> |
assertTrue(lock.validate(p)); |
718 |
> |
} |
719 |
> |
|
720 |
> |
assertValid(lock, lock.tryOptimisticRead()); |
721 |
|
} |
722 |
|
|
723 |
|
/** |
724 |
|
* tryOptimisticRead stamp does not validate if a write lock intervenes |
725 |
|
*/ |
726 |
|
public void testValidateOptimisticWriteLocked() { |
727 |
< |
StampedLock lock = new StampedLock(); |
728 |
< |
long s, p; |
729 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
691 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
727 |
> |
final StampedLock lock = new StampedLock(); |
728 |
> |
final long p = assertValid(lock, lock.tryOptimisticRead()); |
729 |
> |
final long s = assertValid(lock, lock.writeLock()); |
730 |
|
assertFalse(lock.validate(p)); |
731 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
731 |
> |
assertEquals(0L, lock.tryOptimisticRead()); |
732 |
|
assertTrue(lock.validate(s)); |
733 |
|
lock.unlockWrite(s); |
734 |
|
} |
741 |
|
throws InterruptedException { |
742 |
|
final CountDownLatch running = new CountDownLatch(1); |
743 |
|
final StampedLock lock = new StampedLock(); |
744 |
< |
long s, p; |
745 |
< |
assertTrue((p = lock.tryOptimisticRead()) != 0L); |
744 |
> |
final long p = assertValid(lock, lock.tryOptimisticRead()); |
745 |
> |
|
746 |
|
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
747 |
|
public void realRun() throws InterruptedException { |
748 |
|
lock.writeLockInterruptibly(); |
752 |
|
|
753 |
|
running.await(); |
754 |
|
assertFalse(lock.validate(p)); |
755 |
< |
assertFalse((p = lock.tryOptimisticRead()) != 0L); |
755 |
> |
assertEquals(0L, lock.tryOptimisticRead()); |
756 |
|
t.interrupt(); |
757 |
|
awaitTermination(t); |
758 |
|
} |
759 |
|
|
760 |
|
/** |
761 |
< |
* tryConvertToOptimisticRead succeeds and validates if successfully locked, |
761 |
> |
* tryConvertToOptimisticRead succeeds and validates if successfully locked |
762 |
|
*/ |
763 |
|
public void testTryConvertToOptimisticRead() throws InterruptedException { |
764 |
|
StampedLock lock = new StampedLock(); |
765 |
< |
long s, p; |
765 |
> |
long s, p, q; |
766 |
|
assertEquals(0L, lock.tryConvertToOptimisticRead(0L)); |
767 |
|
|
768 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 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); |
768 |
> |
s = assertValid(lock, lock.tryOptimisticRead()); |
769 |
|
assertEquals(s, lock.tryConvertToOptimisticRead(s)); |
770 |
|
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)); |
771 |
|
|
772 |
< |
assertTrue((s = lock.tryReadLock()) != 0L); |
773 |
< |
assertTrue(lock.validate(s)); |
774 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
775 |
< |
assertTrue(lock.validate(p)); |
776 |
< |
|
777 |
< |
assertTrue((s = lock.tryWriteLock(100L, MILLISECONDS)) != 0L); |
778 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
761 |
< |
assertTrue(lock.validate(p)); |
772 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) { |
773 |
> |
s = assertValid(lock, writeLocker.apply(lock)); |
774 |
> |
p = assertValid(lock, lock.tryConvertToOptimisticRead(s)); |
775 |
> |
assertFalse(lock.validate(s)); |
776 |
> |
assertTrue(lock.validate(p)); |
777 |
> |
assertUnlocked(lock); |
778 |
> |
} |
779 |
|
|
780 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 0L); |
781 |
< |
assertTrue(lock.validate(s)); |
782 |
< |
assertTrue((p = lock.tryConvertToOptimisticRead(s)) != 0L); |
783 |
< |
assertTrue(lock.validate(p)); |
780 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) { |
781 |
> |
s = assertValid(lock, readLocker.apply(lock)); |
782 |
> |
q = assertValid(lock, lock.tryOptimisticRead()); |
783 |
> |
assertEquals(q, lock.tryConvertToOptimisticRead(q)); |
784 |
> |
assertTrue(lock.validate(q)); |
785 |
> |
assertTrue(lock.isReadLocked()); |
786 |
> |
p = assertValid(lock, lock.tryConvertToOptimisticRead(s)); |
787 |
> |
assertTrue(lock.validate(p)); |
788 |
> |
assertTrue(lock.validate(s)); |
789 |
> |
assertUnlocked(lock); |
790 |
> |
assertEquals(q, lock.tryConvertToOptimisticRead(q)); |
791 |
> |
assertTrue(lock.validate(q)); |
792 |
> |
} |
793 |
|
} |
794 |
|
|
795 |
|
/** |
796 |
< |
* tryConvertToReadLock succeeds and validates if successfully locked |
771 |
< |
* or lock free; |
796 |
> |
* tryConvertToReadLock succeeds for valid stamps |
797 |
|
*/ |
798 |
|
public void testTryConvertToReadLock() throws InterruptedException { |
799 |
|
StampedLock lock = new StampedLock(); |
800 |
|
long s, p; |
801 |
|
|
802 |
< |
assertFalse((p = lock.tryConvertToReadLock(0L)) != 0L); |
802 |
> |
assertEquals(0L, lock.tryConvertToReadLock(0L)); |
803 |
|
|
804 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
805 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
804 |
> |
s = assertValid(lock, lock.tryOptimisticRead()); |
805 |
> |
p = assertValid(lock, lock.tryConvertToReadLock(s)); |
806 |
|
assertTrue(lock.isReadLocked()); |
807 |
|
assertEquals(1, lock.getReadLockCount()); |
808 |
+ |
assertTrue(lock.validate(s)); |
809 |
|
lock.unlockRead(p); |
810 |
|
|
811 |
< |
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
811 |
> |
s = assertValid(lock, lock.tryOptimisticRead()); |
812 |
|
lock.readLock(); |
813 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
813 |
> |
p = assertValid(lock, lock.tryConvertToReadLock(s)); |
814 |
|
assertTrue(lock.isReadLocked()); |
815 |
|
assertEquals(2, lock.getReadLockCount()); |
816 |
|
lock.unlockRead(p); |
817 |
|
lock.unlockRead(p); |
818 |
+ |
assertUnlocked(lock); |
819 |
|
|
820 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
821 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
822 |
< |
assertTrue(lock.validate(p)); |
823 |
< |
assertTrue(lock.isReadLocked()); |
824 |
< |
assertEquals(1, lock.getReadLockCount()); |
825 |
< |
lock.unlockRead(p); |
826 |
< |
|
827 |
< |
assertTrue((s = lock.readLock()) != 0L); |
828 |
< |
assertTrue(lock.validate(s)); |
829 |
< |
assertEquals(s, lock.tryConvertToReadLock(s)); |
830 |
< |
assertTrue(lock.validate(s)); |
831 |
< |
assertTrue(lock.isReadLocked()); |
832 |
< |
assertEquals(1, lock.getReadLockCount()); |
833 |
< |
lock.unlockRead(s); |
834 |
< |
|
835 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
836 |
< |
assertTrue(lock.validate(s)); |
837 |
< |
assertTrue((p = lock.tryConvertToReadLock(s)) != 0L); |
838 |
< |
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 |
< |
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 |
< |
assertEquals(s, lock.tryConvertToReadLock(s)); |
833 |
< |
assertTrue(lock.validate(s)); |
834 |
< |
assertTrue(lock.isReadLocked()); |
835 |
< |
assertEquals(1, lock.getReadLockCount()); |
836 |
< |
lock.unlockRead(s); |
820 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
821 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) { |
822 |
> |
s = assertValid(lock, writeLocker.apply(lock)); |
823 |
> |
p = assertValid(lock, lock.tryConvertToReadLock(s)); |
824 |
> |
assertFalse(lock.validate(s)); |
825 |
> |
assertTrue(lock.isReadLocked()); |
826 |
> |
assertEquals(1, lock.getReadLockCount()); |
827 |
> |
readUnlocker.accept(lock, p); |
828 |
> |
} |
829 |
> |
|
830 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) { |
831 |
> |
s = assertValid(lock, readLocker.apply(lock)); |
832 |
> |
assertEquals(s, lock.tryConvertToReadLock(s)); |
833 |
> |
assertTrue(lock.validate(s)); |
834 |
> |
assertTrue(lock.isReadLocked()); |
835 |
> |
assertEquals(1, lock.getReadLockCount()); |
836 |
> |
readUnlocker.accept(lock, s); |
837 |
> |
} |
838 |
> |
} |
839 |
|
} |
840 |
|
|
841 |
|
/** |
842 |
< |
* tryConvertToWriteLock succeeds and validates if successfully locked |
841 |
< |
* or lock free; |
842 |
> |
* tryConvertToWriteLock succeeds if lock available; fails if multiply read locked |
843 |
|
*/ |
844 |
|
public void testTryConvertToWriteLock() throws InterruptedException { |
845 |
|
StampedLock lock = new StampedLock(); |
846 |
|
long s, p; |
847 |
|
|
848 |
< |
assertFalse((p = lock.tryConvertToWriteLock(0L)) != 0L); |
848 |
> |
assertEquals(0L, lock.tryConvertToWriteLock(0L)); |
849 |
|
|
850 |
|
assertTrue((s = lock.tryOptimisticRead()) != 0L); |
851 |
|
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
852 |
|
assertTrue(lock.isWriteLocked()); |
853 |
|
lock.unlockWrite(p); |
854 |
|
|
855 |
< |
assertTrue((s = lock.writeLock()) != 0L); |
856 |
< |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
857 |
< |
assertTrue(lock.validate(s)); |
858 |
< |
assertTrue(lock.isWriteLocked()); |
859 |
< |
lock.unlockWrite(s); |
860 |
< |
|
861 |
< |
assertTrue((s = lock.readLock()) != 0L); |
862 |
< |
assertTrue(lock.validate(s)); |
863 |
< |
assertTrue((p = lock.tryConvertToWriteLock(s)) != 0L); |
864 |
< |
assertTrue(lock.validate(p)); |
865 |
< |
assertTrue(lock.isWriteLocked()); |
866 |
< |
lock.unlockWrite(p); |
867 |
< |
|
868 |
< |
assertTrue((s = lock.tryWriteLock()) != 0L); |
869 |
< |
assertTrue(lock.validate(s)); |
870 |
< |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
871 |
< |
assertTrue(lock.validate(s)); |
872 |
< |
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); |
855 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
856 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) { |
857 |
> |
s = assertValid(lock, writeLocker.apply(lock)); |
858 |
> |
assertEquals(s, lock.tryConvertToWriteLock(s)); |
859 |
> |
assertTrue(lock.validate(s)); |
860 |
> |
assertTrue(lock.isWriteLocked()); |
861 |
> |
writeUnlocker.accept(lock, s); |
862 |
> |
} |
863 |
> |
|
864 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) { |
865 |
> |
s = assertValid(lock, readLocker.apply(lock)); |
866 |
> |
p = assertValid(lock, lock.tryConvertToWriteLock(s)); |
867 |
> |
assertFalse(lock.validate(s)); |
868 |
> |
assertTrue(lock.validate(p)); |
869 |
> |
assertTrue(lock.isWriteLocked()); |
870 |
> |
writeUnlocker.accept(lock, p); |
871 |
> |
} |
872 |
> |
} |
873 |
|
|
874 |
< |
assertTrue((s = lock.tryReadLock(100L, MILLISECONDS)) != 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); |
874 |
> |
// failure if multiply read locked |
875 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) { |
876 |
> |
s = assertValid(lock, readLocker.apply(lock)); |
877 |
> |
p = assertValid(lock, readLocker.apply(lock)); |
878 |
> |
assertEquals(0L, lock.tryConvertToWriteLock(s)); |
879 |
> |
assertTrue(lock.validate(s)); |
880 |
> |
assertTrue(lock.validate(p)); |
881 |
> |
assertEquals(2, lock.getReadLockCount()); |
882 |
> |
lock.unlock(p); |
883 |
> |
lock.unlock(s); |
884 |
> |
assertUnlocked(lock); |
885 |
> |
} |
886 |
|
} |
887 |
|
|
888 |
|
/** |
889 |
|
* asWriteLock can be locked and unlocked |
890 |
|
*/ |
891 |
< |
public void testAsWriteLock() { |
891 |
> |
public void testAsWriteLock() throws Throwable { |
892 |
|
StampedLock sl = new StampedLock(); |
893 |
|
Lock lock = sl.asWriteLock(); |
894 |
< |
lock.lock(); |
895 |
< |
assertFalse(lock.tryLock()); |
896 |
< |
lock.unlock(); |
897 |
< |
assertTrue(lock.tryLock()); |
894 |
> |
for (Action locker : lockLockers(lock)) { |
895 |
> |
locker.run(); |
896 |
> |
assertTrue(sl.isWriteLocked()); |
897 |
> |
assertFalse(sl.isReadLocked()); |
898 |
> |
assertFalse(lock.tryLock()); |
899 |
> |
lock.unlock(); |
900 |
> |
assertUnlocked(sl); |
901 |
> |
} |
902 |
|
} |
903 |
|
|
904 |
|
/** |
905 |
|
* asReadLock can be locked and unlocked |
906 |
|
*/ |
907 |
< |
public void testAsReadLock() { |
907 |
> |
public void testAsReadLock() throws Throwable { |
908 |
|
StampedLock sl = new StampedLock(); |
909 |
|
Lock lock = sl.asReadLock(); |
910 |
< |
lock.lock(); |
911 |
< |
lock.unlock(); |
912 |
< |
assertTrue(lock.tryLock()); |
910 |
> |
for (Action locker : lockLockers(lock)) { |
911 |
> |
locker.run(); |
912 |
> |
assertTrue(sl.isReadLocked()); |
913 |
> |
assertFalse(sl.isWriteLocked()); |
914 |
> |
assertEquals(1, sl.getReadLockCount()); |
915 |
> |
locker.run(); |
916 |
> |
assertTrue(sl.isReadLocked()); |
917 |
> |
assertEquals(2, sl.getReadLockCount()); |
918 |
> |
lock.unlock(); |
919 |
> |
lock.unlock(); |
920 |
> |
assertUnlocked(sl); |
921 |
> |
} |
922 |
|
} |
923 |
|
|
924 |
|
/** |
925 |
|
* asReadWriteLock.writeLock can be locked and unlocked |
926 |
|
*/ |
927 |
< |
public void testAsReadWriteLockWriteLock() { |
927 |
> |
public void testAsReadWriteLockWriteLock() throws Throwable { |
928 |
|
StampedLock sl = new StampedLock(); |
929 |
|
Lock lock = sl.asReadWriteLock().writeLock(); |
930 |
< |
lock.lock(); |
931 |
< |
assertFalse(lock.tryLock()); |
932 |
< |
lock.unlock(); |
933 |
< |
assertTrue(lock.tryLock()); |
930 |
> |
for (Action locker : lockLockers(lock)) { |
931 |
> |
locker.run(); |
932 |
> |
assertTrue(sl.isWriteLocked()); |
933 |
> |
assertFalse(sl.isReadLocked()); |
934 |
> |
assertFalse(lock.tryLock()); |
935 |
> |
lock.unlock(); |
936 |
> |
assertUnlocked(sl); |
937 |
> |
} |
938 |
|
} |
939 |
|
|
940 |
|
/** |
941 |
|
* asReadWriteLock.readLock can be locked and unlocked |
942 |
|
*/ |
943 |
< |
public void testAsReadWriteLockReadLock() { |
943 |
> |
public void testAsReadWriteLockReadLock() throws Throwable { |
944 |
|
StampedLock sl = new StampedLock(); |
945 |
|
Lock lock = sl.asReadWriteLock().readLock(); |
946 |
< |
lock.lock(); |
947 |
< |
lock.unlock(); |
948 |
< |
assertTrue(lock.tryLock()); |
946 |
> |
for (Action locker : lockLockers(lock)) { |
947 |
> |
locker.run(); |
948 |
> |
assertTrue(sl.isReadLocked()); |
949 |
> |
assertFalse(sl.isWriteLocked()); |
950 |
> |
assertEquals(1, sl.getReadLockCount()); |
951 |
> |
locker.run(); |
952 |
> |
assertTrue(sl.isReadLocked()); |
953 |
> |
assertEquals(2, sl.getReadLockCount()); |
954 |
> |
lock.unlock(); |
955 |
> |
lock.unlock(); |
956 |
> |
assertUnlocked(sl); |
957 |
> |
} |
958 |
|
} |
959 |
|
|
960 |
|
/** |
977 |
|
Runnable[] actions = { |
978 |
|
() -> { |
979 |
|
StampedLock sl = new StampedLock(); |
980 |
< |
long stamp = sl.tryOptimisticRead(); |
962 |
< |
assertTrue(stamp != 0); |
980 |
> |
long stamp = assertValid(sl, sl.tryOptimisticRead()); |
981 |
|
sl.unlockRead(stamp); |
982 |
|
}, |
983 |
|
() -> { |
994 |
|
}, |
995 |
|
() -> { |
996 |
|
StampedLock sl = new StampedLock(); |
979 |
– |
long stamp = sl.tryOptimisticRead(); |
997 |
|
sl.readLock(); |
998 |
+ |
long stamp = assertValid(sl, sl.tryOptimisticRead()); |
999 |
|
sl.unlockRead(stamp); |
1000 |
|
}, |
1001 |
|
() -> { |
1002 |
|
StampedLock sl = new StampedLock(); |
985 |
– |
long stamp = sl.tryOptimisticRead(); |
1003 |
|
sl.readLock(); |
1004 |
+ |
long stamp = assertValid(sl, sl.tryOptimisticRead()); |
1005 |
|
sl.unlock(stamp); |
1006 |
|
}, |
1007 |
|
|
1008 |
|
() -> { |
1009 |
|
StampedLock sl = new StampedLock(); |
1010 |
|
long stamp = sl.tryConvertToOptimisticRead(sl.writeLock()); |
1011 |
< |
assertTrue(stamp != 0); |
1011 |
> |
assertValid(sl, stamp); |
1012 |
|
sl.writeLock(); |
1013 |
|
sl.unlockWrite(stamp); |
1014 |
|
}, |
1034 |
|
() -> { |
1035 |
|
StampedLock sl = new StampedLock(); |
1036 |
|
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1037 |
< |
assertTrue(stamp != 0); |
1037 |
> |
assertValid(sl, stamp); |
1038 |
|
sl.writeLock(); |
1039 |
|
sl.unlockWrite(stamp); |
1040 |
|
}, |
1054 |
|
StampedLock sl = new StampedLock(); |
1055 |
|
sl.readLock(); |
1056 |
|
long stamp = sl.tryConvertToOptimisticRead(sl.readLock()); |
1057 |
< |
assertTrue(stamp != 0); |
1057 |
> |
assertValid(sl, stamp); |
1058 |
|
sl.readLock(); |
1059 |
|
sl.unlockRead(stamp); |
1060 |
|
}, |
1097 |
|
} |
1098 |
|
|
1099 |
|
/** |
1100 |
< |
* Invalid write stamps result in IllegalMonitorStateException |
1100 |
> |
* Invalid stamps result in IllegalMonitorStateException |
1101 |
|
*/ |
1102 |
< |
public void testInvalidWriteStampsThrowIllegalMonitorStateException() { |
1103 |
< |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
1086 |
< |
writeLockers.add((sl) -> sl.writeLock()); |
1087 |
< |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
1088 |
< |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1089 |
< |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0, DAYS)); |
1102 |
> |
public void testInvalidStampsThrowIllegalMonitorStateException() { |
1103 |
> |
final StampedLock sl = new StampedLock(); |
1104 |
|
|
1105 |
< |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
1106 |
< |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
1107 |
< |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
1108 |
< |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
1109 |
< |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1105 |
> |
assertThrows(IllegalMonitorStateException.class, |
1106 |
> |
() -> sl.unlockWrite(0L), |
1107 |
> |
() -> sl.unlockRead(0L), |
1108 |
> |
() -> sl.unlock(0L)); |
1109 |
> |
|
1110 |
> |
final long optimisticStamp = sl.tryOptimisticRead(); |
1111 |
> |
final long readStamp = sl.readLock(); |
1112 |
> |
sl.unlockRead(readStamp); |
1113 |
> |
final long writeStamp = sl.writeLock(); |
1114 |
> |
sl.unlockWrite(writeStamp); |
1115 |
> |
assertTrue(optimisticStamp != 0L && readStamp != 0L && writeStamp != 0L); |
1116 |
> |
final long[] noLongerValidStamps = { optimisticStamp, readStamp, writeStamp }; |
1117 |
> |
final Runnable assertNoLongerValidStampsThrow = () -> { |
1118 |
> |
for (long noLongerValidStamp : noLongerValidStamps) |
1119 |
> |
assertThrows(IllegalMonitorStateException.class, |
1120 |
> |
() -> sl.unlockWrite(noLongerValidStamp), |
1121 |
> |
() -> sl.unlockRead(noLongerValidStamp), |
1122 |
> |
() -> sl.unlock(noLongerValidStamp)); |
1123 |
> |
}; |
1124 |
> |
assertNoLongerValidStampsThrow.run(); |
1125 |
|
|
1126 |
< |
List<Consumer<StampedLock>> mutaters = new ArrayList<>(); |
1127 |
< |
mutaters.add((sl) -> {}); |
1128 |
< |
mutaters.add((sl) -> sl.readLock()); |
1129 |
< |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1130 |
< |
mutaters.add((sl) -> writeLocker.apply(sl)); |
1102 |
< |
|
1103 |
< |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1104 |
< |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers) |
1105 |
< |
for (Consumer<StampedLock> mutater : mutaters) { |
1106 |
< |
final StampedLock sl = new StampedLock(); |
1107 |
< |
final long stamp = writeLocker.apply(sl); |
1108 |
< |
assertTrue(stamp != 0L); |
1126 |
> |
for (Function<StampedLock, Long> readLocker : readLockers()) |
1127 |
> |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers()) { |
1128 |
> |
final long stamp = readLocker.apply(sl); |
1129 |
> |
assertValid(sl, stamp); |
1130 |
> |
assertNoLongerValidStampsThrow.run(); |
1131 |
|
assertThrows(IllegalMonitorStateException.class, |
1132 |
< |
() -> sl.unlockRead(stamp)); |
1133 |
< |
writeUnlocker.accept(sl, stamp); |
1134 |
< |
mutater.accept(sl); |
1132 |
> |
() -> sl.unlockWrite(stamp), |
1133 |
> |
() -> sl.unlockRead(sl.tryOptimisticRead()), |
1134 |
> |
() -> sl.unlockRead(0L)); |
1135 |
> |
readUnlocker.accept(sl, stamp); |
1136 |
> |
assertUnlocked(sl); |
1137 |
> |
assertNoLongerValidStampsThrow.run(); |
1138 |
> |
} |
1139 |
> |
|
1140 |
> |
for (Function<StampedLock, Long> writeLocker : writeLockers()) |
1141 |
> |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers()) { |
1142 |
> |
final long stamp = writeLocker.apply(sl); |
1143 |
> |
assertValid(sl, stamp); |
1144 |
> |
assertNoLongerValidStampsThrow.run(); |
1145 |
|
assertThrows(IllegalMonitorStateException.class, |
1114 |
– |
() -> sl.unlock(stamp), |
1146 |
|
() -> sl.unlockRead(stamp), |
1147 |
< |
() -> sl.unlockWrite(stamp)); |
1147 |
> |
() -> sl.unlockWrite(0L)); |
1148 |
> |
writeUnlocker.accept(sl, stamp); |
1149 |
> |
assertUnlocked(sl); |
1150 |
> |
assertNoLongerValidStampsThrow.run(); |
1151 |
|
} |
1152 |
|
} |
1153 |
|
|
1154 |
|
/** |
1155 |
< |
* Invalid read stamps result in IllegalMonitorStateException |
1155 |
> |
* Read locks can be very deeply nested |
1156 |
|
*/ |
1157 |
< |
public void testInvalidReadStampsThrowIllegalMonitorStateException() { |
1158 |
< |
List<Function<StampedLock, Long>> readLockers = new ArrayList<>(); |
1159 |
< |
readLockers.add((sl) -> sl.readLock()); |
1160 |
< |
readLockers.add((sl) -> readLockInterruptiblyUninterrupted(sl)); |
1161 |
< |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1162 |
< |
readLockers.add((sl) -> tryReadLockUninterrupted(sl, 0, DAYS)); |
1163 |
< |
|
1164 |
< |
List<BiConsumer<StampedLock, Long>> readUnlockers = new ArrayList<>(); |
1165 |
< |
readUnlockers.add((sl, stamp) -> sl.unlockRead(stamp)); |
1166 |
< |
readUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockRead())); |
1167 |
< |
readUnlockers.add((sl, stamp) -> sl.asReadLock().unlock()); |
1168 |
< |
readUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1169 |
< |
|
1170 |
< |
List<Function<StampedLock, Long>> writeLockers = new ArrayList<>(); |
1171 |
< |
writeLockers.add((sl) -> sl.writeLock()); |
1172 |
< |
writeLockers.add((sl) -> writeLockInterruptiblyUninterrupted(sl)); |
1173 |
< |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, Long.MIN_VALUE, DAYS)); |
1174 |
< |
writeLockers.add((sl) -> tryWriteLockUninterrupted(sl, 0, DAYS)); |
1175 |
< |
|
1176 |
< |
List<BiConsumer<StampedLock, Long>> writeUnlockers = new ArrayList<>(); |
1143 |
< |
writeUnlockers.add((sl, stamp) -> sl.unlockWrite(stamp)); |
1144 |
< |
writeUnlockers.add((sl, stamp) -> assertTrue(sl.tryUnlockWrite())); |
1145 |
< |
writeUnlockers.add((sl, stamp) -> sl.asWriteLock().unlock()); |
1146 |
< |
writeUnlockers.add((sl, stamp) -> sl.unlock(stamp)); |
1147 |
< |
|
1148 |
< |
|
1149 |
< |
for (Function<StampedLock, Long> readLocker : readLockers) |
1150 |
< |
for (BiConsumer<StampedLock, Long> readUnlocker : readUnlockers) |
1151 |
< |
for (Function<StampedLock, Long> writeLocker : writeLockers) |
1152 |
< |
for (BiConsumer<StampedLock, Long> writeUnlocker : writeUnlockers) { |
1153 |
< |
final StampedLock sl = new StampedLock(); |
1154 |
< |
final long stamp = readLocker.apply(sl); |
1155 |
< |
assertTrue(stamp != 0L); |
1156 |
< |
assertThrows(IllegalMonitorStateException.class, |
1157 |
< |
() -> sl.unlockWrite(stamp)); |
1158 |
< |
readUnlocker.accept(sl, stamp); |
1159 |
< |
assertThrows(IllegalMonitorStateException.class, |
1160 |
< |
() -> sl.unlock(stamp), |
1161 |
< |
() -> sl.unlockRead(stamp), |
1162 |
< |
() -> sl.unlockWrite(stamp)); |
1163 |
< |
final long writeStamp = writeLocker.apply(sl); |
1164 |
< |
assertTrue(writeStamp != 0L); |
1165 |
< |
assertTrue(writeStamp != stamp); |
1166 |
< |
assertThrows(IllegalMonitorStateException.class, |
1167 |
< |
() -> sl.unlock(stamp), |
1168 |
< |
() -> sl.unlockRead(stamp), |
1169 |
< |
() -> sl.unlockWrite(stamp)); |
1170 |
< |
writeUnlocker.accept(sl, writeStamp); |
1171 |
< |
assertThrows(IllegalMonitorStateException.class, |
1172 |
< |
() -> sl.unlock(stamp), |
1173 |
< |
() -> sl.unlockRead(stamp), |
1174 |
< |
() -> sl.unlockWrite(stamp)); |
1157 |
> |
public void testDeeplyNestedReadLocks() { |
1158 |
> |
final StampedLock lock = new StampedLock(); |
1159 |
> |
final int depth = 300; |
1160 |
> |
final long[] stamps = new long[depth]; |
1161 |
> |
final List<Function<StampedLock, Long>> readLockers = readLockers(); |
1162 |
> |
final List<BiConsumer<StampedLock, Long>> readUnlockers = readUnlockers(); |
1163 |
> |
for (int i = 0; i < depth; i++) { |
1164 |
> |
Function<StampedLock, Long> readLocker |
1165 |
> |
= readLockers.get(i % readLockers.size()); |
1166 |
> |
long stamp = readLocker.apply(lock); |
1167 |
> |
assertEquals(i + 1, lock.getReadLockCount()); |
1168 |
> |
assertTrue(lock.isReadLocked()); |
1169 |
> |
stamps[i] = stamp; |
1170 |
> |
} |
1171 |
> |
for (int i = 0; i < depth; i++) { |
1172 |
> |
BiConsumer<StampedLock, Long> readUnlocker |
1173 |
> |
= readUnlockers.get(i % readUnlockers.size()); |
1174 |
> |
assertEquals(depth - i, lock.getReadLockCount()); |
1175 |
> |
assertTrue(lock.isReadLocked()); |
1176 |
> |
readUnlocker.accept(lock, stamps[depth - 1 - i]); |
1177 |
|
} |
1178 |
+ |
assertUnlocked(lock); |
1179 |
|
} |
1177 |
– |
|
1180 |
|
} |