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https://gitlab.kitware.com/vtk/vtk-m
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b1f288aaea
The only reason Keys has a template is so that it can hold a UniqueKeys array and provide the key for each group. If that is not needed and you want to implement a library function that takes a keys object, you can now grab the Keys superclass KeysBase. KeysBase is not templated, so you can pass it to a standard method in a library.
64 lines
1.9 KiB
C++
64 lines
1.9 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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//
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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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#ifndef vtk_m_exec_arg_ThreadIndicesReduceByKey_h
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#define vtk_m_exec_arg_ThreadIndicesReduceByKey_h
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#include <vtkm/exec/arg/ThreadIndicesBasic.h>
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#include <vtkm/exec/internal/ReduceByKeyLookup.h>
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namespace vtkm
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{
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namespace exec
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{
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namespace arg
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{
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/// \brief Container for thread indices in a reduce by key invocation.
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///
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/// This specialization of \c ThreadIndices adds extra indices that deal with a
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/// reduce by key. In particular, it save the indices used to map from a unique
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/// key index to the group of input values that has that key associated with
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/// it.
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///
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class ThreadIndicesReduceByKey : public vtkm::exec::arg::ThreadIndicesBasic
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{
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using Superclass = vtkm::exec::arg::ThreadIndicesBasic;
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public:
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template <typename P1, typename P2>
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VTKM_EXEC ThreadIndicesReduceByKey(
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vtkm::Id threadIndex,
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vtkm::Id inIndex,
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vtkm::IdComponent visitIndex,
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vtkm::Id outIndex,
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const vtkm::exec::internal::ReduceByKeyLookupBase<P1, P2>& keyLookup)
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: Superclass(threadIndex, inIndex, visitIndex, outIndex)
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, ValueOffset(keyLookup.Offsets.Get(inIndex))
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, NumberOfValues(keyLookup.Counts.Get(inIndex))
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{
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}
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VTKM_EXEC
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vtkm::Id GetValueOffset() const { return this->ValueOffset; }
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VTKM_EXEC
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vtkm::IdComponent GetNumberOfValues() const { return this->NumberOfValues; }
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private:
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vtkm::Id ValueOffset;
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vtkm::IdComponent NumberOfValues;
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};
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}
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}
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} // namespace vtkm::exec::arg
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#endif //vtk_m_exec_arg_ThreadIndicesReduceByKey_h
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