Program Listing for File CudaCopyFromOperation.hpp

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//////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2016-20, Lawrence Livermore National Security, LLC and Umpire
// project contributors. See the COPYRIGHT file for details.
//
// SPDX-License-Identifier: (MIT)
//////////////////////////////////////////////////////////////////////////////
#ifndef UMPIRE_CudaCopyFromOperation_HPP
#define UMPIRE_CudaCopyFromOperation_HPP

#include "umpire/op/MemoryOperation.hpp"

namespace umpire {
namespace op {

/*!
 * \brief Copy operation to move data from a NVIDA GPU to CPU memory.
 */
class CudaCopyFromOperation :
  public MemoryOperation {
 public:
   /*!
    * @copybrief MemoryOperation::transform
    *
    * Uses cudaMemcpy to move data when src_ptr is on a NVIDIA GPU and dst_ptr
    * is on the CPU.
    *
    * @copydetails MemoryOperation::transform
    */
  void transform(
      void* src_ptr,
      void** dst_ptr,
      util::AllocationRecord *src_allocation,
      util::AllocationRecord *dst_allocation,
      std::size_t length);
};

} // end of namespace op
} //end of namespace umpire

#endif // UMPIRE_CudaCopyFromOperation_HPP