//***********************************************************************
// Virtual World Data Server Client for Scientific Data
//    Header file for the vwcMasterSlave class for MPI
//
// UCLA - OAC
//    Joan Slottow February 1998
//
//***********************************************************************

#ifndef vwc_masterslave
#define vwc_masterslave

#include <iostream>
#include <mpi.h>

//***********************************************************************
// constants
//***********************************************************************

//************************************************************************
// Class: vwcMasterSlave
//************************************************************************

class vwcMasterSlave
{
   protected:

      int     oMSNOfNodes;             // number of nodes
      int     oMSNOfSlaveNodes;        // number of slave nodes
      int     oMSMyNodeId;             // node id of this process

   public:

      //*****************************************************************
      // constructor
      //*****************************************************************

      vwcMasterSlave(  );

      //*****************************************************************
      // destructor
      //*****************************************************************

      ~vwcMasterSlave(  );

   public:

      //*****************************************************************
      // each class should have a print for debugging purposes
      //*****************************************************************

      void
         print(  ) const;


      //*****************************************************************
      // useful methods
      //*****************************************************************

      virtual
      void 
         initialize( int argc, char *argv[  ] );

      void
         send( const char* msg, const int& to ) const;

      void
         receive( char* msg, int& from ) const;

      void
         runMasterSlave(  );

   protected:

      virtual
      void
         runMaster(  ) = 0;
 
      virtual
      void
         runSlave(  ) = 0;

      virtual
      bool
         initDataMaster(  ) = 0;

      virtual
      bool
         initDataSlave(  ) = 0;

};

#endif