/usr/include/ITK-4.5/itkGPUImageDataManager.hxx is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright Insight Software Consortium
*
* 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
*
* http://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.
*
*=========================================================================*/
#ifndef __itkGPUImageDataManager_hxx
#define __itkGPUImageDataManager_hxx
#include "itkGPUImageDataManager.h"
#include "itkOpenCLUtil.h"
//#define VERBOSE
namespace itk
{
template < typename ImageType >
void GPUImageDataManager< ImageType >::SetImagePointer( typename ImageType::Pointer img )
{
m_Image = img;
typedef typename ImageType::RegionType RegionType;
typedef typename ImageType::IndexType IndexType;
typedef typename ImageType::SizeType SizeType;
RegionType region = m_Image->GetBufferedRegion();
IndexType index = region.GetIndex();
SizeType size = region.GetSize();
for (unsigned int d = 0; d < ImageDimension; d++)
{
m_BufferedRegionIndex[d] = index[d];
m_BufferedRegionSize[d] = size[d];
}
m_GPUBufferedRegionIndex = GPUDataManager::New();
m_GPUBufferedRegionIndex->SetBufferSize( sizeof(int) * ImageDimension );
m_GPUBufferedRegionIndex->SetCPUBufferPointer( m_BufferedRegionIndex );
m_GPUBufferedRegionIndex->SetBufferFlag( CL_MEM_READ_ONLY );
m_GPUBufferedRegionIndex->Allocate();
m_GPUBufferedRegionIndex->SetGPUDirtyFlag(true);
m_GPUBufferedRegionSize = GPUDataManager::New();
m_GPUBufferedRegionSize->SetBufferSize( sizeof(int) * ImageDimension );
m_GPUBufferedRegionSize->SetCPUBufferPointer( m_BufferedRegionSize );
m_GPUBufferedRegionSize->SetBufferFlag( CL_MEM_READ_ONLY );
m_GPUBufferedRegionSize->Allocate();
m_GPUBufferedRegionSize->SetGPUDirtyFlag(true);
}
template < typename ImageType >
void GPUImageDataManager< ImageType >::MakeCPUBufferUpToDate()
{
if( m_Image.IsNotNull() )
{
m_Mutex.Lock();
ModifiedTimeType gpu_time = this->GetMTime();
TimeStamp cpu_time_stamp = m_Image->GetTimeStamp();
ModifiedTimeType cpu_time = cpu_time_stamp.GetMTime();
/* Why we check dirty flag and time stamp together?
* Because existing CPU image filters do not use pixel/buffer
* access function in GPUImage and therefore dirty flag is not
* correctly managed. Therefore, we check the time stamp of
* CPU and GPU data as well
*/
if( (m_IsCPUBufferDirty || (gpu_time > cpu_time) ) && m_GPUBuffer != NULL && m_CPUBuffer != NULL )
{
cl_int errid;
#ifdef VERBOSE
std::cout << "GPU->CPU data copy" << std::endl;
#endif
errid = clEnqueueReadBuffer(m_ContextManager->GetCommandQueue(
m_CommandQueueId), m_GPUBuffer, CL_TRUE, 0, m_BufferSize, m_CPUBuffer, 0, NULL,
NULL);
OpenCLCheckError(errid, __FILE__, __LINE__, ITK_LOCATION);
m_Image->Modified();
this->SetTimeStamp( m_Image->GetTimeStamp() );
m_IsCPUBufferDirty = false;
m_IsGPUBufferDirty = false;
}
m_Mutex.Unlock();
}
}
template < typename ImageType >
void GPUImageDataManager< ImageType >::MakeGPUBufferUpToDate()
{
if( m_Image.IsNotNull() )
{
m_Mutex.Lock();
ModifiedTimeType gpu_time = this->GetMTime();
TimeStamp cpu_time_stamp = m_Image->GetTimeStamp();
ModifiedTimeType cpu_time = m_Image->GetMTime();
/* Why we check dirty flag and time stamp together?
* Because existing CPU image filters do not use pixel/buffer
* access function in GPUImage and therefore dirty flag is not
* correctly managed. Therefore, we check the time stamp of
* CPU and GPU data as well
*/
if( (m_IsGPUBufferDirty || (gpu_time < cpu_time) ) && m_CPUBuffer != NULL && m_GPUBuffer != NULL )
{
cl_int errid;
#ifdef VERBOSE
std::cout << "CPU->GPU data copy" << std::endl;
#endif
errid = clEnqueueWriteBuffer(m_ContextManager->GetCommandQueue(
m_CommandQueueId), m_GPUBuffer, CL_TRUE, 0, m_BufferSize, m_CPUBuffer, 0, NULL,
NULL);
OpenCLCheckError(errid, __FILE__, __LINE__, ITK_LOCATION);
this->SetTimeStamp( cpu_time_stamp );
m_IsCPUBufferDirty = false;
m_IsGPUBufferDirty = false;
}
m_Mutex.Unlock();
}
}
template < typename ImageType >
void GPUImageDataManager< ImageType >::Graft(const GPUDataManager* data)
{
//std::cout << "GPU timestamp : " << this->GetMTime() << ", CPU timestamp : "
// << m_Image->GetMTime() << std::endl;
Superclass::Graft( data );
//std::cout << "GPU timestamp : " << this->GetMTime() << ", CPU timestamp : "
// << m_Image->GetMTime() << std::endl;
}
} // namespace itk
#endif
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