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/// @file G4VMPIseedGenerator.hh
/// @brief A base class for random number seed distribution

#ifndef G4VMPI_SEED_GENERATOR_H
#define G4VMPI_SEED_GENERATOR_H

#include "globals.hh"

#include <vector>

class G4VMPIseedGenerator
{
  public:
    G4VMPIseedGenerator();
    virtual ~G4VMPIseedGenerator();

    // set/get methods
    void SetMasterSeed(G4long aseed);  // trigger GenerateSeeds()
    G4long GetMasterSeed() const;

    const std::vector<G4long>& GetSeedList() const;

  protected:
    G4long master_seed_;
    std::vector<G4long> seed_list_;

    // generate seeds for MPI nodes
    virtual void GenerateSeeds() = 0;
};

// ====================================================================
inline G4long G4VMPIseedGenerator::GetMasterSeed() const
{
  return master_seed_;
}

inline const std::vector<G4long>& G4VMPIseedGenerator::GetSeedList() const
{
  return seed_list_;
}

#endif