vtkHeap.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkHeap.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkHeap_h
#define vtkHeap_h
 
#include "vtkCommonMiscModule.h" // For export macro
#include "vtkObject.h"
 
class vtkHeapBlock; //forward declaration
 
class VTKCOMMONMISC_EXPORT vtkHeap : public vtkObject
{
public:
  static vtkHeap *New();
  vtkTypeMacro(vtkHeap,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  void* AllocateMemory(size_t n);
 
 
  virtual void SetBlockSize(size_t);
  virtual size_t GetBlockSize() { return this->BlockSize;};
 
 
  vtkGetMacro(NumberOfBlocks,int);
  vtkGetMacro(NumberOfAllocations,int);
 
  void Reset();
 
  char* StringDup(const char* str);
 
protected:
  vtkHeap();
  ~vtkHeap();
 
  void Add(size_t blockSize);
  void CleanAll();
  vtkHeapBlock* DeleteAndNext();
 
  size_t BlockSize;
  int    NumberOfAllocations;
  int    NumberOfBlocks;
  size_t Alignment;
 
  // Manage the blocks
  vtkHeapBlock* First;
  vtkHeapBlock* Last;
  vtkHeapBlock* Current;
  // Manage the memory in the block
  size_t Position; //the position in the Current block
 
private:
  vtkHeap(const vtkHeap&); // Not implemented.
  void operator=(const vtkHeap&);  // Not implemented.
};
 
#endif