itkGPUDataManager.h

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/*=========================================================================
 *
 *  Copyright UMC Utrecht and contributors
 *
 *  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.
 *
 *=========================================================================*/
/*=========================================================================
*
*  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 __itkGPUDataManager_h
#define __itkGPUDataManager_h
 
#include "itkObject.h"
#include "itkDataObject.h"
#include "itkObjectFactory.h"
#include "itkOpenCLContext.h"
#include <mutex>
 
namespace itk
{
class ITKOpenCL_EXPORT GPUDataManager : public Object   //DataObject//
{
  friend class OpenCLKernelManager;
 
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(GPUDataManager);
 
  typedef GPUDataManager             Self;
  typedef Object                     Superclass;
  typedef SmartPointer< Self >       Pointer;
  typedef SmartPointer< const Self > ConstPointer;
 
  itkNewMacro( Self );
 
  itkTypeMacro( GPUDataManager, Object );
 
  using MutexHolderType = std::lock_guard<std::mutex>;
 
  void SetBufferSize( unsigned int num );
 
  unsigned int GetBufferSize()
  {
    return m_BufferSize;
  }
 
  void SetBufferFlag( cl_mem_flags flags );
 
  void SetCPUBufferPointer( void * ptr );
 
  void SetCPUDirtyFlag( bool isDirty );
 
  void SetGPUDirtyFlag( bool isDirty );
 
  void SetCPUBufferDirty();
 
  void SetGPUBufferDirty();
 
  bool IsCPUBufferDirty()
  {
    return m_IsCPUBufferDirty;
  }
 
  bool IsGPUBufferDirty()
  {
    return m_IsGPUBufferDirty;
  }
 
  virtual void UpdateCPUBuffer();
 
  virtual void UpdateGPUBuffer();
 
  void Allocate();
 
  bool Update();
 
  virtual void Graft( const GPUDataManager * data );
 
  virtual void Initialize();
 
  cl_mem * GetGPUBufferPointer();
 
  void * GetCPUBufferPointer();
 
  void SetCPUBufferLock( const bool v ) { this->m_CPUBufferLock = v; }
  itkGetConstReferenceMacro( CPUBufferLock, bool );
 
  void SetGPUBufferLock( const bool v ) { this->m_GPUBufferLock = v; }
  itkGetConstReferenceMacro( GPUBufferLock, bool );
 
protected:
 
  GPUDataManager();
  ~GPUDataManager() override;
  void PrintSelf( std::ostream & os, Indent indent ) const override;
 
protected:
 
  unsigned int m_BufferSize; // # of bytes
 
  OpenCLContext * m_Context;
 
  cl_mem_flags m_MemFlags;
 
  cl_mem m_GPUBuffer;
  void * m_CPUBuffer;
 
  bool m_IsGPUBufferDirty;
  bool m_IsCPUBufferDirty;
 
  bool m_CPUBufferLock;
  bool m_GPUBufferLock;
 
  std::mutex m_Mutex;
};
 
} // namespace itk
 
#endif