dc192b793d
Previously the arguments to the operator of a vtkm::cont::arg::Transport were the control object, the input domain object, and the output range. If you wanted to, for example, check the size of an input array to make sure it matched the input range, you would have to know the meaning of the input domain object to query its range. This made it hard to create generic transports, like TransportTagArrayIn, that accept data from multiple different input domains but need to know the input range.
326 lines
11 KiB
C++
326 lines
11 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 Sandia Corporation.
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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-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_worklet_Dispatcher_Streaming_MapField_h
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#define vtk_m_worklet_Dispatcher_Streaming_MapField_h
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/internal/DispatcherBase.h>
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#include <vtkm/cont/ArrayHandleStreaming.h>
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namespace vtkm {
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namespace worklet {
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namespace detail {
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template<typename ControlInterface, typename Device>
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struct DispatcherStreamingMapFieldTransformFunctor
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{
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vtkm::Id BlockIndex;
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vtkm::Id BlockSize;
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vtkm::Id CurBlockSize;
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vtkm::Id FullSize;
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VTKM_CONT
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DispatcherStreamingMapFieldTransformFunctor(
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vtkm::Id blockIndex, vtkm::Id blockSize, vtkm::Id curBlockSize, vtkm::Id fullSize)
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: BlockIndex(blockIndex), BlockSize(blockSize),
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CurBlockSize(curBlockSize), FullSize(fullSize) { }
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template<typename ParameterType, bool IsArrayHandle>
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struct DetermineReturnType;
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template<typename ArrayHandleType>
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struct DetermineReturnType<ArrayHandleType, true>
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{
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typedef vtkm::cont::ArrayHandleStreaming<ArrayHandleType> type;
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};
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template<typename NotArrayHandleType>
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struct DetermineReturnType<NotArrayHandleType, false>
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{
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typedef NotArrayHandleType type;
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};
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template<typename ParameterType, vtkm::IdComponent Index>
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struct ReturnType {
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typedef typename DetermineReturnType<ParameterType,
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vtkm::cont::internal::ArrayHandleCheck<ParameterType>::type::value>::type type;
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};
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template<typename ParameterType, bool IsArrayHandle>
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struct TransformImpl;
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template<typename ArrayHandleType>
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struct TransformImpl<ArrayHandleType, true>
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{
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VTKM_CONT
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vtkm::cont::ArrayHandleStreaming<ArrayHandleType>
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operator()(const ArrayHandleType &array, vtkm::Id blockIndex,
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vtkm::Id blockSize, vtkm::Id curBlockSize, vtkm::Id fullSize) const
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{
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vtkm::cont::ArrayHandleStreaming<ArrayHandleType> result =
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vtkm::cont::ArrayHandleStreaming<ArrayHandleType>(
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array, blockIndex, blockSize, curBlockSize);
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if (blockIndex == 0) result.AllocateFullArray(fullSize);
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return result;
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}
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};
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template<typename NotArrayHandleType>
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struct TransformImpl<NotArrayHandleType, false>
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{
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VTKM_CONT
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NotArrayHandleType operator()(const NotArrayHandleType ¬Array) const
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{
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return notArray;
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}
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};
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template<typename ParameterType, vtkm::IdComponent Index>
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VTKM_CONT
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typename ReturnType<ParameterType, Index>::type
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operator()(const ParameterType &invokeData,
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vtkm::internal::IndexTag<Index>) const
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{
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return TransformImpl<ParameterType,
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vtkm::cont::internal::ArrayHandleCheck<ParameterType>::type::value>()
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(invokeData, this->BlockIndex, this->BlockSize, this->CurBlockSize, this->FullSize);
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}
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};
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template<typename ControlInterface, typename Device>
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struct DispatcherStreamingMapFieldTransferFunctor
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{
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VTKM_CONT
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DispatcherStreamingMapFieldTransferFunctor() { }
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template<typename ParameterType, vtkm::IdComponent Index>
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struct ReturnType {
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typedef ParameterType type;
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};
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template<typename ParameterType, bool IsArrayHandle>
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struct TransformImpl;
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template<typename ArrayHandleType>
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struct TransformImpl<ArrayHandleType, true>
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{
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VTKM_CONT
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ArrayHandleType
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operator()(const ArrayHandleType &array) const
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{
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array.SyncControlArray();
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return array;
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}
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};
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template<typename NotArrayHandleType>
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struct TransformImpl<NotArrayHandleType, false>
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{
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VTKM_CONT
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NotArrayHandleType operator()(const NotArrayHandleType ¬Array) const
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{
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return notArray;
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}
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};
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template<typename ParameterType, vtkm::IdComponent Index>
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VTKM_CONT
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typename ReturnType<ParameterType, Index>::type
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operator()(const ParameterType &invokeData,
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vtkm::internal::IndexTag<Index>) const
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{
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return TransformImpl<ParameterType,
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vtkm::cont::internal::ArrayHandleCheck<ParameterType>::type::value>()(invokeData);
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}
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};
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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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typename Device = VTKM_DEFAULT_DEVICE_ADAPTER_TAG>
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class DispatcherStreamingMapField :
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public vtkm::worklet::internal::DispatcherBase<
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DispatcherStreamingMapField<WorkletType,Device>,
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WorkletType,
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vtkm::worklet::WorkletMapField>
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{
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typedef vtkm::worklet::internal::DispatcherBase<
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DispatcherStreamingMapField<WorkletType,Device>,
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WorkletType,
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vtkm::worklet::WorkletMapField> Superclass;
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public:
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VTKM_CONT
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DispatcherStreamingMapField(const WorkletType &worklet = WorkletType())
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: Superclass(worklet), NumberOfBlocks(1) { }
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VTKM_CONT
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void SetNumberOfBlocks(vtkm::Id numberOfBlocks)
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{
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NumberOfBlocks = numberOfBlocks;
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}
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template<typename Invocation, typename DeviceAdapter>
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VTKM_CONT
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void BasicInvoke(const Invocation &invocation,
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vtkm::Id numInstances,
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vtkm::Id globalIndexOffset,
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DeviceAdapter device) const
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{
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this->InvokeTransportParameters(
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invocation,
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numInstances,
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globalIndexOffset,
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this->Worklet.GetScatter().GetOutputRange(numInstances),
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device);
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}
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template<typename Invocation>
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VTKM_CONT
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void DoInvoke(const Invocation &invocation) const
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{
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// This is the type for the input domain
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typedef typename Invocation::InputDomainType 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 DispatcherStreamingMapField, the inputDomain must be an ArrayHandle (or
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// a DynamicArrayHandle 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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vtkm::Id fullSize = inputDomain.GetNumberOfValues();
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vtkm::Id blockSize = fullSize / NumberOfBlocks;
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if (fullSize % NumberOfBlocks != 0) blockSize += 1;
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typedef detail::DispatcherStreamingMapFieldTransformFunctor<
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typename Invocation::ControlInterface, Device> TransformFunctorType;
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typedef detail::DispatcherStreamingMapFieldTransferFunctor<
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typename Invocation::ControlInterface, Device> TransferFunctorType;
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for (vtkm::Id block=0; block<NumberOfBlocks; block++)
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{
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// Account for domain sizes not evenly divisable by the number of blocks
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vtkm::Id numberOfInstances = blockSize;
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if (block == NumberOfBlocks-1)
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numberOfInstances = fullSize - blockSize*block;
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vtkm::Id globalIndexOffset = blockSize*block;
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typedef typename Invocation::ParameterInterface ParameterInterfaceType;
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typedef typename ParameterInterfaceType::template
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StaticTransformType<TransformFunctorType>::type ReportedType;
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ReportedType newParams = invocation.Parameters.StaticTransformCont(
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TransformFunctorType(block, blockSize, numberOfInstances, fullSize));
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typedef typename Invocation::template
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ChangeParametersType<ReportedType>::type ChangedType;
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ChangedType changedParams = invocation.ChangeParameters(newParams);
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this->BasicInvoke(changedParams, numberOfInstances, globalIndexOffset, Device());
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// Loop over parameters again to sync results for this block into control array
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typedef typename ChangedType::ParameterInterface ParameterInterfaceType2;
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const ParameterInterfaceType2 ¶meters2 = changedParams.Parameters;
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parameters2.StaticTransformCont(TransferFunctorType());
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}
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}
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private:
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template<typename Invocation, typename InputRangeType, typename OutputRangeType, typename DeviceAdapter>
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VTKM_CONT
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void InvokeTransportParameters(const Invocation &invocation,
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const InputRangeType& inputRange,
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const InputRangeType& globalIndexOffset,
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const OutputRangeType& outputRange,
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DeviceAdapter device) const
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{
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typedef typename Invocation::ParameterInterface ParameterInterfaceType;
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const ParameterInterfaceType ¶meters = invocation.Parameters;
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typedef vtkm::worklet::internal::detail::DispatcherBaseTransportFunctor<
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typename Invocation::ControlInterface,
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typename Invocation::InputDomainType,
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DeviceAdapter> TransportFunctorType;
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typedef typename ParameterInterfaceType::template StaticTransformType<
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TransportFunctorType>::type ExecObjectParameters;
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ExecObjectParameters execObjectParameters =
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parameters.StaticTransformCont(TransportFunctorType(
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invocation.GetInputDomain(),
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inputRange,
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outputRange));
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// Get the arrays used for scattering input to output.
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typename WorkletType::ScatterType::OutputToInputMapType outputToInputMap =
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this->Worklet.GetScatter().GetOutputToInputMap(inputRange);
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typename WorkletType::ScatterType::VisitArrayType visitArray =
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this->Worklet.GetScatter().GetVisitArray(inputRange);
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// Replace the parameters in the invocation with the execution object and
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// pass to next step of Invoke. Also add the scatter information.
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this->InvokeSchedule(
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invocation
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.ChangeParameters(execObjectParameters)
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.ChangeOutputToInputMap(outputToInputMap.PrepareForInput(device))
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.ChangeVisitArray(visitArray.PrepareForInput(device)),
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outputRange,
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globalIndexOffset,
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device);
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}
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template<typename Invocation, typename RangeType, typename DeviceAdapter>
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VTKM_CONT
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void InvokeSchedule(const Invocation &invocation,
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RangeType range,
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RangeType globalIndexOffset,
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DeviceAdapter) const
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{
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// The WorkletInvokeFunctor class handles the magic of fetching values
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// for each instance and calling the worklet's function. So just create
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// a WorkletInvokeFunctor and schedule it with the device adapter.
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typedef vtkm::exec::internal::WorkletInvokeFunctor<WorkletType,Invocation>
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WorkletInvokeFunctorType;
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WorkletInvokeFunctorType workletFunctor =
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WorkletInvokeFunctorType(this->Worklet, invocation, globalIndexOffset);
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typedef vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter> Algorithm;
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Algorithm::Schedule(workletFunctor, range);
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}
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vtkm::Id NumberOfBlocks;
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_Dispatcher_Streaming_MapField_h
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