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/*=========================================================================
Program: ParaView
Module: $RCSfile: vtkPExtentTranslator.cxx,v $
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 "vtkPExtentTranslator.h"
#include "vtkImageData.h"
#include "vtkMultiProcessController.h"
#include "vtkObjectFactory.h"
#include "vtkRectilinearGrid.h"
#include "vtkStructuredGrid.h"
#include <cassert>
#include <vector>
class vtkPExtentTranslatorInternals
{
public:
std::vector<int> AllProcessExtents;
};
vtkStandardNewMacro(vtkPExtentTranslator);
//----------------------------------------------------------------------------
vtkPExtentTranslator::vtkPExtentTranslator()
{
this->Internals = new vtkPExtentTranslatorInternals;
}
//----------------------------------------------------------------------------
vtkPExtentTranslator::~vtkPExtentTranslator()
{
delete this->Internals;
this->Internals = NULL;
}
//----------------------------------------------------------------------------
int vtkPExtentTranslatorPieceToExtentThreadSafe(
int *resultExtent, vtkDataSet* dataSet)
{
// this is really only meant for topologically structured grids
if (vtkImageData* id = vtkImageData::SafeDownCast(dataSet))
{
id->GetExtent(resultExtent);
}
else if (vtkStructuredGrid* sd = vtkStructuredGrid::SafeDownCast(dataSet))
{
sd->GetExtent(resultExtent);
}
else if (vtkRectilinearGrid* rd = vtkRectilinearGrid::SafeDownCast(dataSet))
{
rd->GetExtent(resultExtent);
}
else
{
return 0;
}
return 1;
}
//-----------------------------------------------------------------------------
int vtkPExtentTranslator::PieceToExtentThreadSafe(
int piece, int vtkNotUsed(numPieces), int vtkNotUsed(ghostLevel),
int *vtkNotUsed(wholeExtent), int *resultExtent, int vtkNotUsed(splitMode),
int vtkNotUsed(byPoints))
{
assert(piece >= 0);
assert(
static_cast<int>(this->Internals->AllProcessExtents.size()) % 6 == 0);
if (this->Internals->AllProcessExtents.size() >= 6)
{
if (static_cast<size_t>(piece*6) >= this->Internals->AllProcessExtents.size())
{
vtkErrorMacro("Invalid piece.");
return 0;
}
memcpy(resultExtent, &this->Internals->AllProcessExtents[piece*6], sizeof(int)*6);
return 1;
}
vtkErrorMacro("GatherExtents must be called before this method");
return 0;
}
//----------------------------------------------------------------------------
void vtkPExtentTranslator::GatherExtents(vtkDataSet* dataset)
{
if (dataset == NULL)
{
this->Internals->AllProcessExtents.clear();
return;
}
vtkMultiProcessController* controller = vtkMultiProcessController::GetGlobalController();
int myExtent[6];
vtkPExtentTranslatorPieceToExtentThreadSafe(myExtent, dataset);
int myId = controller? controller->GetLocalProcessId() : 0;
int numProcs = controller? controller->GetNumberOfProcesses() : 1;
assert(numProcs >= 1);
this->Internals->AllProcessExtents.resize(numProcs*6);
if (numProcs > 1)
{
controller->AllGather(
myExtent, &(this->Internals->AllProcessExtents[0]), 6);
}
else
{
assert(myId == 0);
(void)myId; // "use" myId in non-assert'ing builds.
memcpy(&this->Internals->AllProcessExtents[0], myExtent, sizeof(int)*6);
}
}
//----------------------------------------------------------------------------
void vtkPExtentTranslator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Ranks: " << (this->Internals->AllProcessExtents.size()/6) << endl;
os << indent << "Extents: " << endl;
for (size_t cc=0; cc < this->Internals->AllProcessExtents.size(); cc+=6)
{
int *extents = &this->Internals->AllProcessExtents[cc];
cout << indent.GetNextIndent() << "["
<< extents[0] << ", "
<< extents[1] << ", "
<< extents[2] << ", "
<< extents[3] << ", "
<< extents[4] << ", "
<< extents[5] << "]" << endl;
}
}
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