Epetra_DistObject.h

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//               Epetra: Linear Algebra Services Package
//                 Copyright 2011 Sandia Corporation
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#ifndef EPETRA_DISTOBJECT_H
#define EPETRA_DISTOBJECT_H
#include "Epetra_ConfigDefs.h"
#include "Epetra_Object.h"
#include "Epetra_SrcDistObject.h"
#include "Epetra_BlockMap.h"
class Epetra_Comm;
class Epetra_Import;
class Epetra_Export;
class Epetra_Distributor;
class Epetra_OffsetIndex;


//==========================================================================
class EPETRA_LIB_DLL_EXPORT Epetra_DistObject: public Epetra_Object, public virtual Epetra_SrcDistObject {

  public:


  Epetra_DistObject(const Epetra_BlockMap& Map);

  Epetra_DistObject(const Epetra_BlockMap& Map, const char* const Label);


  Epetra_DistObject(const Epetra_DistObject& Source);


  virtual ~Epetra_DistObject();




  int Import(const Epetra_SrcDistObject& A, const Epetra_Import& Importer, Epetra_CombineMode CombineMode, const Epetra_OffsetIndex * Indexor = 0);


  int Import(const Epetra_SrcDistObject& A, const Epetra_Export& Exporter, Epetra_CombineMode CombineMode, const Epetra_OffsetIndex * Indexor = 0);


  int Export(const Epetra_SrcDistObject& A, const Epetra_Import & Importer, Epetra_CombineMode CombineMode, const Epetra_OffsetIndex * Indexor = 0);


  int Export(const Epetra_SrcDistObject& A, const Epetra_Export& Exporter, Epetra_CombineMode CombineMode, const Epetra_OffsetIndex * Indexor = 0);


  const Epetra_BlockMap& Map() const {return(Map_);};

  const Epetra_Comm& Comm() const {return(*Comm_);};

  bool DistributedGlobal() const {return(Map_.DistributedGlobal());};


  virtual void Print(std::ostream& os) const;

 protected:



  virtual int DoTransfer(const Epetra_SrcDistObject& A,
                         Epetra_CombineMode CombineMode,
                         int NumSameIDs,
                         int NumPermuteIDs,
                         int NumRemoteIDs,
                         int NumExportIDs,
                         int* PermuteToLIDs,
                         int* PermuteFromLIDs,
                         int* RemoteLIDs,
                         int* ExportLIDs,
                         int& LenExports,
                         char*& Exports,
                         int& LenImports,
                         char*& Imports,
                         Epetra_Distributor& Distor,
                         bool DoReverse,
                         const Epetra_OffsetIndex * Indexor );

  // These methods must be implemented by derived class


  virtual int CheckSizes(const Epetra_SrcDistObject& Source) = 0;
  virtual int CopyAndPermute(const Epetra_SrcDistObject& Source,
                             int NumSameIDs,
                             int NumPermuteIDs,
                             int * PermuteToLIDs,
                             int * PermuteFromLIDs,
                             const Epetra_OffsetIndex * Indexor,
                             Epetra_CombineMode CombineMode = Zero) = 0;

  virtual int PackAndPrepare(const Epetra_SrcDistObject& Source,
                             int NumExportIDs,
                             int* ExportLIDs,
                             int& LenExports,
                             char*& Exports,
                             int& SizeOfPacket,
                             int* Sizes,
                             bool & VarSizes,
                             Epetra_Distributor& Distor) = 0;

  virtual int UnpackAndCombine(const Epetra_SrcDistObject& Source,
                               int NumImportIDs,
                               int* ImportLIDs,
                               int LenImports,
                               char* Imports,
                               int& SizeOfPacket,
                               Epetra_Distributor& Distor,
                               Epetra_CombineMode CombineMode,
                               const Epetra_OffsetIndex * Indexor) = 0;

  Epetra_BlockMap Map_;
  const Epetra_Comm* Comm_;
  char* Exports_;
  char* Imports_;
  int LenExports_;
  int LenImports_;
  int *Sizes_;

 private:
  Epetra_DistObject& operator=(const Epetra_DistObject& src);

};

#endif /* EPETRA_DISTOBJECT_H */