snl_fei_BlkSizeMsgHandler.hpp

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/*--------------------------------------------------------------------*/
/*    Copyright 2005 Sandia Corporation.                              */
/*    Under the 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.  Export of this program may require     */
/*    a license from the United States Government.                    */
/*--------------------------------------------------------------------*/

#ifndef _snl_fei_BlkSizeMsgHandler_hpp_
#define _snl_fei_BlkSizeMsgHandler_hpp_

#include <fei_macros.hpp>
#include <fei_SharedPtr.hpp>
#include <fei_VectorSpace.hpp>
#include <fei_Graph.hpp>
#include <fei_CommUtils.hpp>

namespace snl_fei {

class BlkSizeMsgHandler : public fei::MessageHandler<int> {
 public:
  BlkSizeMsgHandler(fei::VectorSpace* vspace,
        fei::Graph* graph,
        MPI_Comm comm);
  virtual ~BlkSizeMsgHandler();

  int do_the_exchange();

  std::vector<int>& getSendProcs();
  std::vector<int>& getRecvProcs();

  int getSendMessageLength(int destProc, int& messageLength);
  int getSendMessage(int destProc, std::vector<int>& message);
  int processRecvMessage(int srcProc, std::vector<int>& message);

 private:
  fei::comm_map* remote_colIndices_;
  fei::comm_map* local_colIndices_;
  fei::VectorSpace* vecSpace_;
  snl_fei::PointBlockMap* ptBlkMap_;
  fei::Graph* graph_;
  MPI_Comm comm_;
  std::vector<int> sendProcs_;
  std::vector<int> recvProcs_;

  bool firstExchange_;
};

} // namespace snl_fei

#endif