/*

 * 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.

 */

 /*

 * $Id: MemoryManager.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#if !defined(MEMORYMANAGER_HPP)

#define MEMORYMANAGER_HPP

#include <xercesc/util/XercesDefs.hpp>

#include <stdlib.h>

XERCES_CPP_NAMESPACE_BEGIN

/**

 *  Configurable memory manager

 *

 *  <p>This interface allows outside applications to plug in their own memory

 *  manager to be used by Xerces for memory allocation/deallocation.</p> 

 */

class XMLPARSER_EXPORT MemoryManager

{

public:

    // -----------------------------------------------------------------------

    //  Constructors are hidden, only the virtual destructor is exposed

    // -----------------------------------------------------------------------

    /** @name Destructor */

    //@{

    /**

      * Default destructor

      */

    virtual ~MemoryManager()

    {

    }

    //@}

    // -----------------------------------------------------------------------

    //  The virtual memory manager interface

    // -----------------------------------------------------------------------

    /** @name The pure virtual methods in this interface. */

    //@{

    /**

      * This method allocates requested memory.

      *

      * @param size The requested memory size

      *

      * @return A pointer to the allocated memory

      */

    virtual void* allocate(size_t size) = 0;

    /**

      * This method deallocates memory

      *

      * @param p The pointer to the allocated memory to be deleted

      */

    virtual void deallocate(void* p) = 0;

    //@}

protected :

    // -----------------------------------------------------------------------

    //  Hidden Constructors

    // -----------------------------------------------------------------------

    /** @name Constructor */

    //@{

    /**

      * Protected default constructor

      */

    MemoryManager()

    {

    }

    //@}

private:

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    MemoryManager(const MemoryManager&);

    MemoryManager& operator=(const MemoryManager&);

};

XERCES_CPP_NAMESPACE_END

#endif