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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkImageFillBufferTest.cxx,v $
Language: C++
Date: $Date: 2009-08-15 08:03:36 $
Version: $Revision: 1.5 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "itkImage.h"
int itkImageFillBufferTest(int argc, char * argv[])
{
if( argc != 2 )
{
std::cerr << "Usage: " << argv[0];
std::cerr << " imageSize (GB). It can be a decimal value.";
std::cerr << std::endl;
return EXIT_FAILURE;
}
typedef itk::Image<unsigned char,3> ImageType;
ImageType::Pointer image = ImageType::New();
ImageType::SizeType size;
size[0] = (ImageType::SizeValueType) (atof(argv[1])*1024);
size[1] = 1024;
size[2] = 1024;
// // do the math with a very large type to be sure to be able to store very
// // large numbers on 32 bit systems
// vxl_uint_64 total = ((vxl_uint_64)size[0]) * ((vxl_uint_64)size[1]) * ((vxl_uint_64)size[2]);
// std::cout << "Expected memory usage is: " << total << std::endl;
// if( total > itk::NumericTraits<ImageType::SizeValueType>::max() )
// {
// // we should get an error on allocation
// try
// {
// image->SetRegions( size );
// }
// catch(itk::ExceptionObject e)
// {
// std::cout << e << std::endl;
// std::cout << "Can't allocate memory - that's nice. Don't go further." << std::endl;
// return (EXIT_SUCCESS);
// }
// return (EXIT_FAILURE);
// }
// else
// {
// image->SetRegions( size );
// }
image->SetRegions( size );
image->Allocate();
image->FillBuffer( 128 );
image->Print(std::cout);
// try to access a value in the image
ImageType::IndexType idx;
idx[0] = 100;
idx[1] = 100;
idx[2] = 100;
std::cout << "ComputeOffset(): " << image->ComputeOffset(idx) << std::endl;
// we may have a segfault here on 32 bit systems if 4 GB is requested and 0 effectively allocated
if( image->GetPixel( idx ) != 128 )
{
std::cerr << "Value is not 128!" << std::endl;
return (EXIT_FAILURE);
}
return (EXIT_SUCCESS);
}
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