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/*=========================================================================
Program: ParaView
Module: vtkMultiProcessControllerHelper.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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.
=========================================================================*/
#include "vtkMultiProcessControllerHelper.h"
#include "vtkAppendCompositeDataLeaves.h"
#include "vtkAppendFilter.h"
#include "vtkAppendPolyData.h"
#include "vtkCompositeDataSet.h"
#include "vtkGraph.h"
#include "vtkImageAppend.h"
#include "vtkImageData.h"
#include "vtkMultiProcessController.h"
#include "vtkMultiProcessStream.h"
#include "vtkObjectFactory.h"
#include "vtkStructuredGridAppend.h"
#include "vtkTrivialProducer.h"
#include "vtkUnstructuredGrid.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkNew.h"
vtkStandardNewMacro(vtkMultiProcessControllerHelper);
//----------------------------------------------------------------------------
vtkMultiProcessControllerHelper::vtkMultiProcessControllerHelper()
{
}
//----------------------------------------------------------------------------
vtkMultiProcessControllerHelper::~vtkMultiProcessControllerHelper()
{
}
//----------------------------------------------------------------------------
int vtkMultiProcessControllerHelper::ReduceToAll(
vtkMultiProcessController* controller,
vtkMultiProcessStream& data,
void (*operation)(vtkMultiProcessStream& A, vtkMultiProcessStream& B),
int tag)
{
int myid = controller->GetLocalProcessId();
int numProcs = controller->GetNumberOfProcesses();
int children[2] = {2*myid + 1, 2*myid + 2};
int parent = myid > 0? (myid-1)/2 : -1;
int childno = 0;
for (childno = 0; childno < 2; childno++)
{
int childid = children[childno];
if (childid >= numProcs)
{
// skip nonexistent children.
continue;
}
vtkMultiProcessStream child_stream;
controller->Receive(child_stream, childid, tag);
(*operation)(child_stream, data);
}
if (parent >= 0)
{
controller->Send(data, parent, tag);
data.Reset();
controller->Receive(data, parent, tag);
}
for (childno = 0; childno < 2; childno++)
{
int childid = children[childno];
if (childid >= numProcs)
{
// skip nonexistent children.
continue;
}
controller->Send(data, childid, tag);
}
return 1;
}
//-----------------------------------------------------------------------------
vtkDataObject* vtkMultiProcessControllerHelper::MergePieces(
vtkDataObject** pieces, unsigned int num_pieces)
{
if (num_pieces == 0)
{
return NULL;
}
vtkDataObject* result = pieces[0]->NewInstance();
std::vector<vtkSmartPointer<vtkDataObject> > piece_vector;
piece_vector.resize(num_pieces);
for (unsigned int cc=0; cc < num_pieces; cc++)
{
piece_vector[cc] = pieces[cc];
}
if (vtkMultiProcessControllerHelper::MergePieces(piece_vector, result))
{
return result;
}
result->Delete();
return NULL;
}
//-----------------------------------------------------------------------------
bool vtkMultiProcessControllerHelper::MergePieces(
std::vector<vtkSmartPointer<vtkDataObject> >& pieces,
vtkDataObject* result)
{
if (pieces.size() == 0)
{
return false;
}
if (pieces.size() == 1)
{
result->ShallowCopy(pieces[0]);
vtkImageData* id = vtkImageData::SafeDownCast(pieces[0]);
if (id)
{
vtkStreamingDemandDrivenPipeline::SetWholeExtent(result->GetInformation(),
static_cast<vtkImageData*>(pieces[0].GetPointer())->GetExtent());
}
return true;
}
// PolyData and Unstructured grid need different append filters.
vtkAlgorithm* appender = NULL;
if (vtkPolyData::SafeDownCast(result))
{
appender = vtkAppendPolyData::New();
}
else if (vtkUnstructuredGrid::SafeDownCast(result))
{
appender = vtkAppendFilter::New();
}
else if (vtkImageData::SafeDownCast(result))
{
vtkImageAppend* ia = vtkImageAppend::New();
ia->PreserveExtentsOn();
appender = ia;
}
else if (vtkStructuredGrid::SafeDownCast(result))
{
appender = vtkStructuredGridAppend::New();;
}
else if (vtkGraph::SafeDownCast(result))
{
vtkGenericWarningMacro("Support for vtkGraph has been depreciated.")
return false;
}
else if (vtkCompositeDataSet::SafeDownCast(result))
{
// this only supports composite datasets of polydata and unstructured
// grids.
vtkAppendCompositeDataLeaves* cdl = vtkAppendCompositeDataLeaves::New();
cdl->AppendFieldDataOn();
appender = cdl;
}
else
{
vtkGenericWarningMacro(<< result->GetClassName() << " cannot be merged");
result->ShallowCopy(pieces[0]);
return false;
}
std::vector<vtkSmartPointer<vtkDataObject> >::iterator iter;
for (iter = pieces.begin();
iter != pieces.end();
++iter)
{
vtkDataSet* ds = vtkDataSet::SafeDownCast(iter->GetPointer());
if (ds && ds->GetNumberOfPoints() == 0)
{
// skip empty pieces.
continue;
}
vtkNew<vtkTrivialProducer> tp;
tp->SetOutput(iter->GetPointer());
appender->AddInputConnection(0, tp->GetOutputPort());
}
// input connections may be 0, since we skip empty inputs in the loop above.
if (appender->GetNumberOfInputConnections(0) > 0)
{
appender->Update();
result->ShallowCopy(appender->GetOutputDataObject(0));
}
appender->Delete();
return true;
}
//----------------------------------------------------------------------------
void vtkMultiProcessControllerHelper::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
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