// -*-C++-*- 

/*  inc/FixedSizeAllocator.hpp  */

/*
 * Author: Philogelos A. <Philogelos@yahoo.com>
 * Maintainer: Philogelos A.
 * Keywords: C++, library, containers
 *
 * Copyright (C) 1999 Philogelos A.
 *
 * This file is part of Quercus Robusta.
 *
 * Quercus Robusta is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this software; see the file COPYING.LIB.  If not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */



#ifndef __FIXEDSIZEALLOCATOR_HPP__
#define __FIXEDSIZEALLOCATOR_HPP__

/* $Id$ */

#include "MemoryAllocator.hpp"
#include "Object.hpp"
#include "defines.h"

/**

   @author Philogelos
   @created
*/
class FixedSizeAllocator : public MemoryAllocator,
						   public virtual Object
{

  /**
   */
public: FixedSizeAllocator( const Index aDefaultSize, const Index aSegmentSize,
							const char *aName );

  /**
   */
public: virtual ~FixedSizeAllocator();

public: virtual void *allocate( Index aNumberOfBytes );
public: virtual void  deallocate( void *anAddress );

  /**
   */
public:  virtual Top *clone() const;

  /**
   */
public:  virtual String  toString() const;

  /**
   */
public:  virtual String  getClassName() const;

protected: struct Segment
{
  Segment *nextInChain;
  char    *area;
};

protected: const Index defaultSize;
protected: const Index segmentSize;
protected: Segment    *segmentChain;
protected: char       *headOfFreeList;

#if defined( PROFILE_MEM_ALLOC )
protected: Index  totalAllocated;
protected: Index  actualAllocated;
protected: Index  maxAllocated;
protected: double averageAllocated;

protected: Index  totalSegments;
protected: Index  actualSegments;
protected: Index  maxSegments;
protected: double averageSegments;
#endif
protected: const char *name;
};

/* $Log$ */

/* __FIXEDSIZEALLOCATOR_HPP__ */
#endif