vtkm::exec::arg::ThreadIndicesBasic Class Reference

Basic container for thread indices in a worklet invocation. More...

#include <ThreadIndicesBasic.h>

Inheritance diagram for vtkm::exec::arg::ThreadIndicesBasic:

Public Member Functions
	ThreadIndicesBasic (vtkm::Id threadIndex, vtkm::Id inIndex, vtkm::IdComponent visitIndex, vtkm::Id outIndex)
vtkm::Id	GetThreadIndex () const
	The index of the thread or work invocation. More...
vtkm::Id	GetInputIndex () const
	The index into the input domain. More...
vtkm::Id3	GetInputIndex3D () const
	The 3D index into the input domain. More...
vtkm::Id	GetOutputIndex () const
	The index into the output domain. More...
vtkm::IdComponent	GetVisitIndex () const
	The visit index. More...

Private Attributes
vtkm::Id	ThreadIndex
vtkm::Id	InputIndex
vtkm::Id	OutputIndex
vtkm::IdComponent	VisitIndex

Detailed Description

Basic container for thread indices in a worklet invocation.

During the execution of a worklet function in an execution environment thread, VTK-m has to manage several indices. To simplify this management and to provide a single place to store them (so that they do not have to be recomputed), WorkletInvokeFunctor creates a ThreadIndices object. This object gets passed to Fetch operations to help them load data.

All ThreadIndices classes should implement the functions provided in the ThreadIndicesBasic class. (It is in fact a good idea to subclass it.) Other ThreadIndices classes may provide additional indices if appropriate for the scheduling.

Constructor & Destructor Documentation

ThreadIndicesBasic()

vtkm::exec::arg::ThreadIndicesBasic::ThreadIndicesBasic ( vtkm::Id  threadIndex, vtkm::Id  inIndex, vtkm::IdComponent  visitIndex, vtkm::Id  outIndex  )

inline

Member Function Documentation

GetInputIndex()

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::GetInputIndex ( ) const

inline

The index into the input domain.

This index refers to the input element (array value, cell, etc.) that this thread is being invoked for. This is the typical index used during Fetch::Load.

GetInputIndex3D()

vtkm::Id3 vtkm::exec::arg::ThreadIndicesBasic::GetInputIndex3D ( ) const

inline

The 3D index into the input domain.

This index refers to the input element (array value, cell, etc.) that this thread is being invoked for. If the input domain has 2 or 3 dimensional indexing, this result will preserve that. If the domain indexing is just one dimensional, the result will have the index in the first component with the remaining components set to 0.

GetOutputIndex()

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::GetOutputIndex ( ) const

inline

The index into the output domain.

This index refers to the output element (array value, cell, etc.) that this thread is creating. This is the typical index used during Fetch::Store.

GetThreadIndex()

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::GetThreadIndex ( ) const

inline

The index of the thread or work invocation.

This index refers to which instance of the worklet is being invoked. Every invocation of the worklet has a unique thread index. This is also called the work index depending on the context.

GetVisitIndex()

vtkm::IdComponent vtkm::exec::arg::ThreadIndicesBasic::GetVisitIndex ( ) const

inline

The visit index.

When multiple output indices have the same input index, they are distinguished using the visit index.

Member Data Documentation

InputIndex

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::InputIndex

private

OutputIndex

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::OutputIndex

private

ThreadIndex

vtkm::Id vtkm::exec::arg::ThreadIndicesBasic::ThreadIndex

private

VisitIndex

vtkm::IdComponent vtkm::exec::arg::ThreadIndicesBasic::VisitIndex

private

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The documentation for this class was generated from the following file:

• ThreadIndicesBasic.h