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Tpetra_Details_castAwayConstDualView.hpp
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1 // @HEADER
2 // *****************************************************************************
3 // Tpetra: Templated Linear Algebra Services Package
4 //
5 // Copyright 2008 NTESS and the Tpetra contributors.
6 // SPDX-License-Identifier: BSD-3-Clause
7 // *****************************************************************************
8 // @HEADER
9 
10 #ifndef TPETRA_DETAILS_CASTAWAYCONSTDUALVIEW_HPP
11 #define TPETRA_DETAILS_CASTAWAYCONSTDUALVIEW_HPP
12 
20 
21 #include "Kokkos_DualView.hpp"
22 
23 namespace Tpetra {
24 namespace Details {
25 
30 template <class ValueType, class DeviceType>
31 Kokkos::DualView<ValueType*, DeviceType>
32 castAwayConstDualView(const Kokkos::DualView<const ValueType*, DeviceType>& input_dv) {
33  typedef Kokkos::DualView<const ValueType*, DeviceType> input_dual_view_type;
34  typedef typename input_dual_view_type::t_dev::non_const_type out_dev_view_type;
35  typedef typename input_dual_view_type::t_host::non_const_type out_host_view_type;
36 
37  out_dev_view_type output_view_dev(const_cast<ValueType*>(input_dv.view_device().data()),
38  input_dv.view_device().extent(0));
39  out_host_view_type output_view_host(const_cast<ValueType*>(input_dv.view_host().data()),
40  input_dv.view_host().extent(0));
41 
42  Kokkos::DualView<ValueType*, DeviceType> output_dv(output_view_dev, output_view_host);
43  if (input_dv.need_sync_host()) output_dv.modify_device();
44  if (input_dv.need_sync_device()) output_dv.modify_host();
45  return output_dv;
46 }
47 
48 } // namespace Details
49 } // namespace Tpetra
50 
51 #endif // TPETRA_DETAILS_CASTAWAYCONSTDUALVIEW_HPP
Kokkos::DualView< ValueType *, DeviceType > castAwayConstDualView(const Kokkos::DualView< const ValueType *, DeviceType > &input_dv)
Cast away const-ness of a 1-D Kokkos::DualView.