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ec0791e941
Calling std::swap isn't legal from CUDA code, but the new vtkm::Swap method is safe. It currently does a naive swap when compiling CUDA code, and falls back to an ADL swap
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2018 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2018 UT-Battelle, LLC.
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// Copyright 2018 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_Swap_h
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#define vtk_m_Swap_h
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#include <vtkm/internal/ExportMacros.h>
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#include <algorithm>
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namespace vtkm
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{
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/// Performs a swap operation. Safe to call from cuda code.
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#ifdef __CUDACC__
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template <typename T>
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VTKM_EXEC_CONT void Swap(T& a, T& b)
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{
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T tmp = a;
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a = b;
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b = tmp;
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}
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#else
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template <typename T>
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VTKM_EXEC_CONT void Swap(T& a, T& b)
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{
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using namespace std;
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swap(a, b);
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}
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#endif
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} // end namespace vtkm
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#endif //vtk_m_Swap_h
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