001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.util;
018
019public class ReferenceCounted {
020    private final ReferenceCount count;
021
022    protected ReferenceCounted() {
023        this.count = ReferenceCount.onRelease(this::doRelease);
024        this.count.retain();
025    }
026
027    public void retain() throws IllegalStateException {
028        count.retain();
029    }
030
031    public void release() throws IllegalStateException {
032        count.release();
033    }
034
035    // cleanup
036    protected void doRelease() {
037    }
038}