mask.h

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/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2022 Adrian Kummerlaender
 *  E-mail contact: info@openlb.net
 *  The most recent release of OpenLB can be downloaded at
 *  <http://www.openlb.net/>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this program; if not, write to the Free
 *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 *  Boston, MA  02110-1301, USA.
*/
 
#ifndef GPU_CUDA_MASK_H_
#define GPU_CUDA_MASK_H_
 
#include "column.h"
 
namespace olb {
 
template <typename T>
class ConcreteBlockMask<T,Platform::GPU_CUDA> final : public Serializable {
private:
  gpu::cuda::Column<bool> _mask;
  std::size_t _weight;
 
  bool _modified;
 
public:
  ConcreteBlockMask(std::size_t size):
    _mask(size),
    _weight(0),
    _modified(true) { }
 
  bool operator[](std::size_t i) const {
    return _mask[i];
  }
 
  void set(std::size_t i, bool active) {
           if ( _mask[i] && !active) {
      _weight -= 1;
    } else if (!_mask[i] &&  active) {
      _weight += 1;
    }
    _mask[i] = active;
    _modified = true;
  }
 
  std::size_t weight() const {
    return _weight;
  }
 
  bool* deviceData() {
    return _mask.deviceData();
  }
 
  AbstractColumn<bool>& asAbstract() {
    return _mask;
  }
 
  void setProcessingContext(ProcessingContext context) {
    if (_modified && context == ProcessingContext::Simulation) {
      _mask.setProcessingContext(context);
      _modified = false;
    }
  }
 
  std::size_t getNblock() const override;
  std::size_t getSerializableSize() const override;
  bool* getBlock(std::size_t iBlock, std::size_t& sizeBlock, bool loadingMode) override;
 
};
 
template<typename T>
std::size_t ConcreteBlockMask<T,Platform::GPU_CUDA>::getNblock() const
{
  return 1 + _mask.getNblock();
}
 
template<typename T>
std::size_t ConcreteBlockMask<T,Platform::GPU_CUDA>::getSerializableSize() const
{
  return sizeof(_weight) + _mask.getSerializableSize();
}
 
template<typename T>
bool* ConcreteBlockMask<T,Platform::GPU_CUDA>::getBlock(std::size_t iBlock, std::size_t& sizeBlock, bool loadingMode)
{
  std::size_t currentBlock = 0;
  bool* dataPtr = nullptr;
 
  registerVar(iBlock, sizeBlock, currentBlock, dataPtr, _weight);
  registerSerializableOfConstSize(iBlock, sizeBlock, currentBlock, dataPtr, _mask, loadingMode);
 
  return dataPtr;
}
 
 
}
 
#endif