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// The manager class for MPI applications.

// Author: Ivana Hrivnacova, 25/06/2015  (ivana@ipno.in2p3.fr)

#ifndef G4MPIToolsManager_h
#define G4MPIToolsManager_h 1

#include "G4AnalysisManagerState.hh"
#include "G4HnInformation.hh"
#include "G4ios.hh"

#include "tools/impi_world"
#include "tools/histo/hmpi"

#include <vector>
#include <string_view>

class G4MPIToolsManager
{
  public:
    G4MPIToolsManager(const G4AnalysisManagerState& state,
                      tools::histo::hmpi* hmpi)
    : fState(state), fHmpi(hmpi) {}
    G4MPIToolsManager() = delete;
    virtual ~G4MPIToolsManager() = default;

  public:
    // Methods
    template <typename HT>
    G4bool Merge(const std::vector<std::pair<HT*, G4HnInformation*>>& hnVector

);
  private:
    // Methods
    template <typename HT>
    G4bool Send(G4int nofActiveT,
                const std::vector<std::pair<HT*, G4HnInformation*>>& hnVector

);

    template <typename HT>
    G4bool Receive(G4int nofActiveT,
                const std::vector<std::pair<HT*, G4HnInformation*>>& hnVector

);

    // Static data members
    static constexpr std::string_view fkClass { "G4MPIToolsManager" };

    // Data members
    const G4AnalysisManagerState& fState;
    tools::histo::hmpi*  fHmpi;
};

// inline functions
#include "G4MPIToolsManager.icc"

#endif