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/*=========================================================================
Program: Visualization Toolkit
Module: vtkXMLPStructuredDataWriter.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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 "vtkXMLPStructuredDataWriter.h"
#include "vtkXMLStructuredDataWriter.h"
#include "vtkExecutive.h"
#include "vtkErrorCode.h"
#include "vtkDataSet.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkCommunicator.h"
#include "vtkMultiProcessController.h"
//----------------------------------------------------------------------------
vtkXMLPStructuredDataWriter::vtkXMLPStructuredDataWriter()
{
}
//----------------------------------------------------------------------------
vtkXMLPStructuredDataWriter::~vtkXMLPStructuredDataWriter()
{
}
//----------------------------------------------------------------------------
void vtkXMLPStructuredDataWriter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
}
//----------------------------------------------------------------------------
int vtkXMLPStructuredDataWriter::WriteInternal()
{
int retVal = this->Superclass::WriteInternal();
if (retVal == 0 || !this->GetContinuingExecution())
{
this->Extents.clear();
}
return retVal;
}
//----------------------------------------------------------------------------
void vtkXMLPStructuredDataWriter::WritePrimaryElementAttributes(ostream &os, vtkIndent indent)
{
int* wExt = this->GetInputInformation(0, 0)->Get(
vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT());
this->WriteVectorAttribute("WholeExtent", 6, wExt);
this->Superclass::WritePrimaryElementAttributes(os, indent);
}
//----------------------------------------------------------------------------
void vtkXMLPStructuredDataWriter::WritePPieceAttributes(int index)
{
if (this->Extents.find(index) != this->Extents.end())
{
this->WriteVectorAttribute("Extent", 6, &this->Extents[index][0]);
if (this->ErrorCode == vtkErrorCode::OutOfDiskSpaceError)
{
return;
}
}
this->Superclass::WritePPieceAttributes(index);
}
//----------------------------------------------------------------------------
vtkXMLWriter* vtkXMLPStructuredDataWriter::CreatePieceWriter(int index)
{
vtkXMLStructuredDataWriter* pWriter = this->CreateStructuredPieceWriter();
pWriter->SetNumberOfPieces(this->NumberOfPieces);
pWriter->SetWritePiece(index);
pWriter->SetGhostLevel(this->GhostLevel);
return pWriter;
}
//----------------------------------------------------------------------------
void vtkXMLPStructuredDataWriter::PrepareSummaryFile()
{
this->Superclass::PrepareSummaryFile();
// The code below gathers extens from all processes to write in the
// meta-file. Note that the extent of each piece was already stored by
// each writer in WritePiece(). This is gathering it all to root node.
if (this->Controller)
{
// Even though the logic is pretty straightforward, we need to
// do a fair amount of work to use GatherV. Each rank simply
// serializes its extents to 7 int blocks - piece number and 6
// extent values. Then we gather this all to root.
int rank = this->Controller->GetLocalProcessId();
int nRanks = this->Controller->GetNumberOfProcesses();
int nPiecesTotal = 0;
vtkIdType nPieces = this->Extents.size();
vtkIdType* offsets = 0;
vtkIdType* nPiecesAll = 0;
vtkIdType* recvLengths = 0;
if (rank == 0)
{
nPiecesAll = new vtkIdType[nRanks];
recvLengths = new vtkIdType[nRanks];
offsets = new vtkIdType[nRanks];
}
this->Controller->Gather(&nPieces, nPiecesAll, 1, 0);
if (rank == 0)
{
for (int i=0; i<nRanks; i++)
{
offsets[i] = nPiecesTotal*7;
nPiecesTotal += nPiecesAll[i];
recvLengths[i] = nPiecesAll[i]*7;
}
}
int* sendBuffer = 0;
int sendSize = nPieces*7;
if (nPieces > 0)
{
sendBuffer = new int[sendSize];
ExtentsType::iterator iter = this->Extents.begin();
for (int count = 0; iter != this->Extents.end(); iter++, count++)
{
sendBuffer[count*7] = iter->first;
memcpy(&sendBuffer[count*7+1], &iter->second[0], 6*sizeof(int));
}
}
int* recvBuffer = 0;
if (rank == 0)
{
recvBuffer = new int[nPiecesTotal*7];
}
this->Controller->GatherV(sendBuffer, recvBuffer, sendSize,
recvLengths, offsets, 0);
if (rank == 0)
{
// Add all received values to Extents.
// These are later written in WritePPieceAttributes()
for (int i=1; i<nRanks; i++)
{
for (int j=0; j<nPiecesAll[i]; j++)
{
int* buffer = recvBuffer + offsets[i] + j*7;
this->Extents[*buffer] =
std::vector<int>(buffer+1, buffer+7);
}
}
}
delete[] nPiecesAll;
delete[] recvBuffer;
delete[] offsets;
delete[] recvLengths;
delete[] sendBuffer;
}
}
//----------------------------------------------------------------------------
int vtkXMLPStructuredDataWriter::WritePiece(int index)
{
int result = this->Superclass::WritePiece(index);
if (result)
{
// Store the extent of this piece in Extents. This is later used
// in WritePPieceAttributes to write the summary file.
vtkDataSet* input = this->GetInputAsDataSet();
int* ext = input->GetInformation()->Get(vtkDataObject::DATA_EXTENT());
this->Extents[index] = std::vector<int>(ext, ext+6);
}
return result;
}
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