public Lock acquireSharedLock(int value) {
final int index = index(value);
if (useSpinLock) {
OReadersWriterSpinLock spinLock = spinLocks[index];
spinLock.acquireReadLock();
return new SpinLockWrapper(true, spinLock);
}
final ReadWriteLock rwLock = locks[index];
final Lock lock = rwLock.readLock();
lock.lock();
return lock;
}
@Override
public Lock acquireSharedLock(final T value) {
final int index;
if (value == null) index = 0;
else index = index(value.hashCode());
if (useSpinLock) {
OReadersWriterSpinLock spinLock = spinLocks[index];
spinLock.acquireReadLock();
return new SpinLockWrapper(true, spinLock);
}
final ReadWriteLock rwLock = locks[index];
final Lock lock = rwLock.readLock();
lock.lock();
return lock;
}