EpetraExt_ZoltanMpiComm.h

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// ***********************************************************************
// 
//     EpetraExt: Epetra Extended - Linear Algebra Services Package
//                 Copyright (2001) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
// 
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//  
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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#ifndef EPETRAEXT_ZOLTANMPICOMM_H
#define EPETRAEXT_ZOLTANMPICOMM_H

#include "Epetra_Object.h"
#include "Epetra_Comm.h"
#include "EpetraExt_ZoltanMpiDistributor.h"

class Epetra_Distributor;

#include "Epetra_BasicDirectory.h"
class Epetra_Directory;
class Epetra_BlockMap;

#include <mpi.h>

#include "EpetraExt_ZoltanMpiCommData.h"

namespace EpetraExt {


class ZoltanMpiComm: public Epetra_Object, public virtual Epetra_Comm {
    
 public:



  ZoltanMpiComm(MPI_Comm comm);



  ZoltanMpiComm(const ZoltanMpiComm & Comm);

  Epetra_Comm * Clone() const
  { return(new ZoltanMpiComm(*this)); }


  virtual ~ZoltanMpiComm();



  void Barrier() const;



  int Broadcast(double * MyVals, int Count, int Root) const;


  int Broadcast(int * MyVals, int Count, int Root) const;



  int GatherAll(double * MyVals, double * AllVals, int Count) const;


  int GatherAll(int * MyVals, int * AllVals, int Count) const;



  int SumAll(double * PartialSums, double * GlobalSums, int Count) const;


  int SumAll(int * PartialSums, int * GlobalSums, int Count) const;



  int MaxAll(double * PartialMaxs, double * GlobalMaxs, int Count) const;



  int MaxAll(int * PartialMaxs, int * GlobalMaxs, int Count) const;


  int MinAll(double * PartialMins, double * GlobalMins, int Count) const;



  int MinAll(int * PartialMins, int * GlobalMins, int Count) const;



  int ScanSum(double * MyVals, double * ScanSums, int Count) const;



  int ScanSum(int * MyVals, int * ScanSums, int Count) const;

  
  MPI_Comm Comm() const {return(MpiCommData_->Comm_);};


  int MyPID() const {return(MpiCommData_->rank_);};
  

  int NumProc() const {return(MpiCommData_->size_);};


  Epetra_Distributor * CreateDistributor() const;
  Epetra_Directory * CreateDirectory(const Epetra_BlockMap & Map) const;


  int GetMpiTag() const {int tag = MpiCommData_->curTag_++; if (tag > MpiCommData_->maxTag_) tag = MpiCommData_->minTag_; return(tag);};

  MPI_Comm GetMpiComm() const {return(MpiCommData_->Comm_);};


  inline void Print(ostream & os) const {
  os << "  Processor "<< MyPID()<<" of " << NumProc() << " total processors"; 
  return;}
  void PrintInfo(ostream & os) const {ZoltanMpiComm::Print(os);return;};



  int ReferenceCount() const {return(MpiCommData_->ReferenceCount());};


  const ZoltanMpiCommData * DataPtr() const {return(MpiCommData_);};


  ZoltanMpiComm & operator=(const ZoltanMpiComm & Comm);
  
 private:
  
  int CheckInput(double * ptr, int count) const {if ((ptr==0) && (count>0)) return(-1); return(0);};
  int CheckInput(int * ptr, int count) const {if ((ptr==0) && (count>0)) return(-1); return(0);};

  void CleanupData();
  ZoltanMpiCommData * MpiCommData_;

};

} //namespace EpetraExt

#endif /* EPETRAEXT_ZOLTANMPICOMM_H */

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