AthRNGSvc.h

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// -*- c++ -*-
/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef RNGCOMPS_ATHRNGSVC_H
#define RNGCOMPS_ATHRNGSVC_H
 
#include <unordered_map>
#include <vector>
#include <string>
#include <mutex>
#include <functional>
 
#include "AthenaKernel/IAthRNGSvc.h"
#include "AthenaBaseComps/AthService.h"
 
namespace ATHRNG {
  class RNGWrapper;
}
namespace CLHEP{
  class HepRandomEngine;
}

class AthRNGSvc : public extends<AthService, IAthRNGSvc>
{
 
public:

  AthRNGSvc(const std::string& name, ISvcLocator* svc);
  virtual ~AthRNGSvc();

  StatusCode initialize() override final;

  virtual ATHRNG::RNGWrapper* getEngine(const INamedInterface* client,
                                        const std::string& streamName="") override final;

  virtual void printEngineState(const INamedInterface* client,
                                const std::string& streamName = "") override final;
 
private:

  std::string m_rngType;

  std::unordered_map<std::string, ATHRNG::RNGWrapper*> m_wrappers;

  typedef std::function<CLHEP::HepRandomEngine*(void)> factoryFunc;
  factoryFunc m_fact;

  std::mutex m_mutex;
 
};
 
#endif