protected LockAttemptResult stealLockInternal(
Long nodeId, Locker locker, LockType lockType, MemoryBudget mb, int lockTableIndex)
throws DatabaseException {
Lock entry = lockTables[lockTableIndex].get(nodeId);
assert entry != null;
/*
* Note that flushWaiter may do nothing, because the lock may have been
* granted to our locker after the prior call to attemptLock and before
* the call to this method.
*/
entry.flushWaiter(locker, mb, lockTableIndex);
/* Remove all owners except for our owner. */
entry.stealLock(locker, mb, lockTableIndex);
/*
* The lock attempt normally succeeds, but can fail if the lock holder
* is non-preemptable.
*/
return attemptLockInternal(
nodeId, locker, lockType, false /*nonBlockingRequest*/, lockTableIndex);
}
