mirror of
https://gitlab.kitware.com/vtk/vtk-m
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d879188de0
Rather than force all dispatchers to be templated on a device adapter, instead use a TryExecute internally within the invoke to select a device adapter. Because this removes the need to declare a device when invoking a worklet, this commit also removes the need to declare a device in several other areas of the code.
92 lines
3.6 KiB
C++
92 lines
3.6 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_DispatcherReduceByKey_h
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#define vtk_m_worklet_DispatcherReduceByKey_h
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/worklet/WorkletReduceByKey.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 WorkletReduceByKey.
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///
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template <typename WorkletType>
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class DispatcherReduceByKey
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: public vtkm::worklet::internal::DispatcherBase<DispatcherReduceByKey<WorkletType>,
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WorkletType,
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vtkm::worklet::WorkletReduceByKey>
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{
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using Superclass = vtkm::worklet::internal::DispatcherBase<DispatcherReduceByKey<WorkletType>,
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WorkletType,
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vtkm::worklet::WorkletReduceByKey>;
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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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DispatcherReduceByKey(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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DispatcherReduceByKey(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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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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// If you get a compile error on this line, then you have tried to use
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// something other than vtkm::worklet::Keys as the input domain, which
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// is illegal.
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VTKM_STATIC_ASSERT_MSG(
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(vtkm::cont::arg::TypeCheck<vtkm::cont::arg::TypeCheckTagKeys, InputDomainType>::value),
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"Invalid input domain for WorkletReduceByKey.");
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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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// Now that we have the input domain, we can extract the range of the
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// scheduling and call BadicInvoke.
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this->BasicInvoke(invocation, inputDomain.GetInputRange());
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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_DispatcherReduceByKey_h
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