/** Do the real work of getWriteOwnerLocker. */
Locker getWriteOwnerLockerInternal(Long nodeId, int lockTableIndex) {
Map<Long, Lock> lockTable = lockTables[lockTableIndex];
Lock lock = lockTable.get(nodeId);
if (lock == null) {
return null;
} else if (lock.nOwners() > 1) {
/* not a write lock */
return null;
} else {
return lock.getWriteOwnerLocker();
}
}
