mitkMemoryUtilities.h

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/*=========================================================================
 
Program:   Medical Imaging & Interaction Toolkit
Language:  C++
Date:      $Date$
Version:   $Revision$
 
Copyright (c) German Cancer Research Center, Division of Medical and
Biological Informatics. All rights reserved.
See MITKCopyright.txt or https://www.mitk.org/copyright.html 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 notices for more information.
 
=========================================================================*/

#ifndef _MITK_MEMORY_UTILITIES_H_
#define _MITK_MEMORY_UTILITIES_H_

#include <itkMacro.h>
#include <itkExceptionObject.h>
#include "mitkCommon.h"

namespace mitk
{
class MITK_CORE_EXPORT MemoryUtilities
{
public:
  static size_t GetProcessMemoryUsage();
  
  static size_t GetTotalSizeOfPhysicalRam();
  
  template <typename ElementType>
  static ElementType* AllocateElements(size_t numberOfElements, bool noThrow = false )
  {
    // Encapsulate all image memory allocation here to throw an
    // exception when memory allocation fails even when the compiler
    // does not do this by default.
    ElementType* data = NULL;
    try
    {
      data = new ElementType[numberOfElements];
    }
    catch(...)
    {
      data = NULL;
    }
    if( ( data == NULL ) && ( noThrow == false ) )
    {
      throw itk::MemoryAllocationError(__FILE__, __LINE__, "Failed to allocate memory.", ITK_LOCATION);
    }
    return data;
  }
  
  template <typename ElementType>
  static void DeleteElements(ElementType* elements)
  {
    if ( elements != NULL )
    {
      delete[] elements;  
    }  
  }
  
protected:
  #ifndef _MSC_VER 
  static int ReadStatmFromProcFS( int* size, int* res, int* shared, int* text, int* sharedLibs, int* stack, int* dirtyPages );
  #endif
     
};
} //end of namespace mitk

#endif