/*
* 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.cassandra.utils.concurrent;
/**
* A simple extension of AutoCloseable, that represents a resource that can be utilised in multiple locations,
* each managing their own closure of the resource, so that when the last such instance is closed all are.
*
*/
public interface SharedCloseable extends AutoCloseable
{
/**
* @return a new instance of the object representing the same state and backed by the same underlying resources.
* Coordinates with the original (and other instances) when the underlying resource should be closed.
* Throws an exception if the shared resource has already been closed.
*/
public SharedCloseable sharedCopy();
public Throwable close(Throwable accumulate);
public void addTo(Ref.IdentityCollection identities);
}