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lammps/lib/kokkos/core/src/impl/Kokkos_PhysicalLayout.hpp
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Kokkos_PhysicalLayout.hpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#ifndef KOKKOS_PHYSICAL_LAYOUT_HPP
#define KOKKOS_PHYSICAL_LAYOUT_HPP
#include <Kokkos_View.hpp>
namespace Kokkos {
namespace Impl {
struct PhysicalLayout {
enum LayoutType {Left,Right,Scalar,Error};
LayoutType layout_type;
int rank;
long long int stride[8]; //distance between two neighboring elements in a given dimension
template< class T , class L , class D , class M >
PhysicalLayout( const View<T,L,D,M,ViewDefault> & view )
: layout_type( is_same< typename View<T,L,D,M>::array_layout , LayoutLeft >::value ? Left : (
is_same< typename View<T,L,D,M>::array_layout , LayoutRight >::value ? Right : Error ))
, rank( view.Rank )
{
for(int i=0;i<8;i++) stride[i] = 0;
view.stride( stride );
}
#ifdef KOKKOS_HAVE_CUDA
template< class T , class L , class D , class M >
PhysicalLayout( const View<T,L,D,M,ViewCudaTexture> & view )
: layout_type( is_same< typename View<T,L,D,M>::array_layout , LayoutLeft >::value ? Left : (
is_same< typename View<T,L,D,M>::array_layout , LayoutRight >::value ? Right : Error ))
, rank( view.Rank )
{
for(int i=0;i<8;i++) stride[i] = 0;
view.stride( stride );
}
#endif
};
}
}
#endif
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