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/*
* 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.
*/
#ifndef REF_COUNTING_OBJECT_H
#define REF_COUNTING_OBJECT_H
#include <iostream>
#include <list>
#include "apache/das/RefCountingPointer.h"
namespace apache {
namespace das {
/**
* RefcountingObject is the base class for all objects in SDO
* These objects keep a count of references to themselves, then
* free themselves when they are unused.
*/
template <class T>
class RefCountingObject
{
public:
RefCountingObject();
RefCountingObject(const RefCountingObject<T>& rc);
T& operator=(const T& rc);
virtual ~RefCountingObject();
/**
* Add to the reference count - a new pointer has been created.
*/
void addRef(RefCountingPointer<T>* refPtr);
/**
* Subtract from the the reference count - a reference has dropped.
*/
virtual void releaseRef(RefCountingPointer<T>* refPtr);
/**
* Print contents to stream
*/
virtual std::ostream& printSelf(std::ostream &os);
protected:
virtual void free(void);
private:
bool freed;
unsigned int refCount;
std::list<RefCountingPointer<T>*>* refPtrs;
};
};
};
#endif //REF_COUNTING_OBJECT_H
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