/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.procedure2;
/**
* Interface to get status of a Lock without getting access to acquire/release lock.
* Currently used in MasterProcedureScheduler where we want to give Queues access to lock's
* status for scheduling purposes, but not the ability to acquire/release it.
*/
public interface LockStatus {
boolean isLocked();
boolean hasExclusiveLock();
boolean isLockOwner(long procId);
boolean hasParentLock(final Procedure proc);
boolean hasLockAccess(final Procedure proc);
Procedure<?> getExclusiveLockOwnerProcedure();
long getExclusiveLockProcIdOwner();
int getSharedLockCount();
}