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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
/**
* @class vtkMPIMultiBlockPLOT3DReader
* @brief vtkMultiBlockPLOT3DReader subclass that
* uses MPI-IO to efficiently read binary files for 3D domains in parallel using
* MPI-IO.
*
* vtkMPIMultiBlockPLOT3DReader extends vtkMultiBlockPLOT3DReader to use MPI-IO
* instead of POSIX IO to read file in parallel.
*/
#ifndef vtkMPIMultiBlockPLOT3DReader_h
#define vtkMPIMultiBlockPLOT3DReader_h
#include "vtkIOMPIParallelModule.h" // For export macro
#include "vtkMultiBlockPLOT3DReader.h"
VTK_ABI_NAMESPACE_BEGIN
class VTKIOMPIPARALLEL_EXPORT vtkMPIMultiBlockPLOT3DReader : public vtkMultiBlockPLOT3DReader
{
public:
static vtkMPIMultiBlockPLOT3DReader* New();
vtkTypeMacro(vtkMPIMultiBlockPLOT3DReader, vtkMultiBlockPLOT3DReader);
void PrintSelf(ostream& os, vtkIndent indent) override;
///@{
/**
* Use this to override using MPI-IO. When set to false (default is true),
* this class will simply forward all method calls to the superclass.
*/
vtkSetMacro(UseMPIIO, bool);
vtkGetMacro(UseMPIIO, bool);
vtkBooleanMacro(UseMPIIO, bool);
///@}
protected:
vtkMPIMultiBlockPLOT3DReader();
~vtkMPIMultiBlockPLOT3DReader() override;
/**
* Determines we should use MPI-IO for the current file. We don't use MPI-IO
* for 2D files or ASCII files.
*/
bool CanUseMPIIO();
int OpenFileForDataRead(void*& fp, const char* fname) override;
void CloseFile(void* fp) override;
int ReadIntScalar(void* vfp, int extent[6], int wextent[6], vtkDataArray* scalar,
vtkTypeUInt64 offset, const vtkMultiBlockPLOT3DReaderRecord& currentRecord) override;
int ReadScalar(void* vfp, int extent[6], int wextent[6], vtkDataArray* scalar,
vtkTypeUInt64 offset, const vtkMultiBlockPLOT3DReaderRecord& currentRecord) override;
int ReadVector(void* vfp, int extent[6], int wextent[6], int numDims, vtkDataArray* vector,
vtkTypeUInt64 offset, const vtkMultiBlockPLOT3DReaderRecord& currentRecord) override;
bool UseMPIIO;
private:
vtkMPIMultiBlockPLOT3DReader(const vtkMPIMultiBlockPLOT3DReader&) = delete;
void operator=(const vtkMPIMultiBlockPLOT3DReader&) = delete;
};
VTK_ABI_NAMESPACE_END
#endif
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