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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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.
*
*=========================================================================*/
#include <iostream>
#include "itkImage.h"
#include "itkTestingMacros.h"
int
itkImageFillBufferTest(int argc, char * argv[])
{
if (argc != 2)
{
std::cerr << "Usage: " << itkNameOfTestExecutableMacro(argv);
std::cerr << " imageSize (GB). It can be a decimal value.";
std::cerr << std::endl;
return EXIT_FAILURE;
}
using ImageType = itk::Image<unsigned char, 3>;
auto image = ImageType::New();
ImageType::SizeType size;
size[0] = (ImageType::SizeValueType)(std::stod(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(const 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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