mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 02:55:47 +00:00
99ce66c6fe
Previously, all Fetch objects received an Invocation object in their Load and Store methods. The point of this was that it allowed the Fetch to get data from any of the execution objects. However, every Fetch either just got data directly from its associated execution object or else used a secondary execution object (the input domain) to get indices into their own execution object. This left two potential areas for improvement. First, pulling data out of the Invocation object was unnecessarily complicated. It would be much nicer to get data directly from the associated execution object. Second, when getting index information from the input domain, it was often the case that extra computations were necessary (particularly on structured cell sets). There was no way to share the index information among Fetches, and therefore the computations were replicated. This change removes the Invocation from the Fetch Load and Store. Instead, it passes the associated execution object and a new object type called the ThreadIndices. The ThreadIndices are customized for the input domain and therefore have all the information needed for a redirected lookup. It is also a thread-local object so it can cache computed indices and save on computation time.
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2014 Sandia Corporation.
|
|
// Copyright 2014 UT-Battelle, LLC.
|
|
// Copyright 2014 Los Alamos National Security.
|
|
//
|
|
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
#ifndef vtk_m_worklet_Dispatcher_MapField_h
|
|
#define vtk_m_worklet_Dispatcher_MapField_h
|
|
|
|
#include <vtkm/cont/DeviceAdapter.h>
|
|
#include <vtkm/worklet/WorkletMapField.h>
|
|
#include <vtkm/worklet/internal/DispatcherBase.h>
|
|
|
|
namespace vtkm {
|
|
namespace worklet {
|
|
|
|
/// \brief Dispatcher for worklets that inherit from \c WorkletMapField.
|
|
///
|
|
template<typename WorkletType,
|
|
typename Device = VTKM_DEFAULT_DEVICE_ADAPTER_TAG>
|
|
class DispatcherMapField :
|
|
public vtkm::worklet::internal::DispatcherBase<
|
|
DispatcherMapField<WorkletType,Device>,
|
|
WorkletType,
|
|
vtkm::worklet::WorkletMapField,
|
|
Device>
|
|
{
|
|
typedef vtkm::worklet::internal::DispatcherBase<
|
|
DispatcherMapField<WorkletType,Device>,
|
|
WorkletType,
|
|
vtkm::worklet::WorkletMapField,
|
|
Device> Superclass;
|
|
|
|
public:
|
|
VTKM_CONT_EXPORT
|
|
DispatcherMapField(const WorkletType &worklet = WorkletType())
|
|
: Superclass(worklet) { }
|
|
|
|
template<typename Invocation>
|
|
VTKM_CONT_EXPORT
|
|
void DoInvoke(const Invocation &invocation) const
|
|
{
|
|
// This is the type for the input domain
|
|
typedef typename Invocation::InputDomainType InputDomainType;
|
|
|
|
// We can pull the input domain parameter (the data specifying the input
|
|
// domain) from the invocation object.
|
|
InputDomainType inputDomain = invocation.GetInputDomain();
|
|
|
|
// For a DispatcherMapField, the inputDomain must be an ArrayHandle (or
|
|
// a DynamicArrayHandle that gets cast to one). The size of the domain
|
|
// (number of threads/worklet instances) is equal to the size of the
|
|
// array.
|
|
vtkm::Id numInstances = inputDomain.GetNumberOfValues();
|
|
|
|
// A MapField is a pretty straightforward dispatch. Once we know the number
|
|
// of invocations, the superclass can take care of the rest.
|
|
this->BasicInvoke(invocation, numInstances);
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
} // namespace vtkm::worklet
|
|
|
|
#endif //vtk_m_worklet_Dispatcher_MapField_h
|