mirror of
https://gitlab.kitware.com/vtk/vtk-m
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78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
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//============================================================================
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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 2016 Sandia Corporation.
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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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_exec_internal_ReduceByKeyLookup_h
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#define vtk_m_exec_internal_ReduceByKeyLookup_h
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#include <vtkm/exec/ExecutionObjectBase.h>
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#include <vtkm/StaticAssert.h>
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#include <vtkm/Types.h>
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#include <type_traits>
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namespace vtkm {
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namespace exec {
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namespace internal {
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/// \breif Execution object holding lookup info for reduce by key.
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///
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/// A WorkletReduceByKey needs several arrays to map the current output object
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/// to the respective key and group of values. This execution object holds that
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/// state.
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///
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template<typename KeyPortalType,
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typename IdPortalType,
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typename IdComponentPortalType>
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struct ReduceByKeyLookup : vtkm::exec::ExecutionObjectBase
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{
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using KeyType = typename KeyPortalType::ValueType;
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VTKM_STATIC_ASSERT(
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(std::is_same<typename IdPortalType::ValueType, vtkm::Id>::value));
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VTKM_STATIC_ASSERT(
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(std::is_same<typename IdComponentPortalType::ValueType, vtkm::IdComponent>::value));
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KeyPortalType UniqueKeys;
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IdPortalType SortedValuesMap;
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IdPortalType Offsets;
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IdComponentPortalType Counts;
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VTKM_EXEC_CONT
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ReduceByKeyLookup(const KeyPortalType &uniqueKeys,
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const IdPortalType &sortedValuesMap,
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const IdPortalType &offsets,
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const IdComponentPortalType &counts)
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: UniqueKeys(uniqueKeys),
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SortedValuesMap(sortedValuesMap),
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Offsets(offsets),
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Counts(counts)
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{ }
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VTKM_EXEC_CONT
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ReduceByKeyLookup()
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{ }
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};
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}
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}
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} // namespace vtkm::exec::internal
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#endif //vtk_m_exec_internal_ReduceByKeyLookup_h
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