mirror of
https://gitlab.kitware.com/vtk/vtk-m
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88 lines
3.5 KiB
C++
88 lines
3.5 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 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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_worklet_Dispatcher_MapField_h
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#define vtk_m_worklet_Dispatcher_MapField_h
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/internal/DispatcherBase.h>
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namespace vtkm
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{
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namespace worklet
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{
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/// \brief Dispatcher for worklets that inherit from \c WorkletMapField.
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///
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template <typename WorkletType>
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class DispatcherMapField
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: public vtkm::worklet::internal::DispatcherBase<DispatcherMapField<WorkletType>,
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WorkletType,
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vtkm::worklet::WorkletMapField>
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{
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using Superclass = vtkm::worklet::internal::DispatcherBase<DispatcherMapField<WorkletType>,
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WorkletType,
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vtkm::worklet::WorkletMapField>;
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using ScatterType = typename Superclass::ScatterType;
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public:
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// If you get a compile error here about there being no appropriate constructor for ScatterType,
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// then that probably means that the worklet you are trying to execute has defined a custom
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// ScatterType and that you need to create one (because there is no default way to construct
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// the scatter). By convention, worklets that define a custom scatter type usually provide a
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// static method named MakeScatter that constructs a scatter object.
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VTKM_CONT
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DispatcherMapField(const WorkletType& worklet = WorkletType(),
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const ScatterType& scatter = ScatterType())
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: Superclass(worklet, scatter)
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{
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}
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VTKM_CONT
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DispatcherMapField(const ScatterType& scatter)
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: Superclass(WorkletType(), scatter)
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{
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}
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template <typename Invocation>
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VTKM_CONT void DoInvoke(Invocation& invocation) const
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{
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// This is the type for the input domain
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using InputDomainType = typename Invocation::InputDomainType;
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// We can pull the input domain parameter (the data specifying the input
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// domain) from the invocation object.
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const InputDomainType& inputDomain = invocation.GetInputDomain();
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// For a DispatcherMapField, the inputDomain must be an ArrayHandle (or
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// an VariantArrayHandle that gets cast to one). The size of the domain
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// (number of threads/worklet instances) is equal to the size of the
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// array.
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auto numInstances = internal::scheduling_range(inputDomain);
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// A MapField is a pretty straightforward dispatch. Once we know the number
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// of invocations, the superclass can take care of the rest.
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this->BasicInvoke(invocation, numInstances);
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}
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_Dispatcher_MapField_h
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