client_server_mapping.hpp

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#ifndef __XIOS_CLIENT_SERVER_MAPPING_HPP__
#define __XIOS_CLIENT_SERVER_MAPPING_HPP__

#include "xios_spl.hpp"
#include "array_new.hpp"
#include "mpi.hpp"
#include <unordered_map>

namespace xios {

class CClientServerMapping
{
public:
  typedef std::unordered_map<int, std::vector<size_t> > GlobalIndexMap;
  public:
    CClientServerMapping();

    virtual ~CClientServerMapping();

    // Only need global index on client to calculate mapping (supposed client has info of distribution)
    virtual void computeServerIndexMapping(const CArray<size_t,1>& globalIndexOnClient, int nbServer) = 0;

    static std::map<int,int> computeConnectedClients(int nbServer, int nbClient,
                                                     MPI_Comm& clientIntraComm,
                                                     const std::vector<int>& connectedServerRank);

    const GlobalIndexMap& getGlobalIndexOnServer() const;

    GlobalIndexMap& getGlobalIndexOnServer();

  protected:
    GlobalIndexMap indexGlobalOnServer_;
};

} // namespace xios
#endif // __XIOS_CLIENT_SERVER_MAPPING_HPP__