IoSvc.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
// IoSvc.h 
// Header file for class IoSvc
// Author: S.Binet<binet@cern.ch>
#ifndef ATHENASERVICES_IOSVC_H
#define ATHENASERVICES_IOSVC_H 1
 
// STL includes
#include <string>
#include <unordered_map>
 
// FrameWork includes
#include "AthenaBaseComps/AthService.h"
 
// AthenaKernel
#include "AthenaRootKernel/IIoSvc.h"
 
// Forward declaration
class ISvcLocator;
template <class TYPE> class SvcFactory;
 
 
 
class IoSvc
  : public extends<::AthService, ::IIoSvc>
{
  friend class SvcFactory<IoSvc>;

  // Public methods: 
 public: 
  typedef IIoSvc::Fd Fd;

  IoSvc( const std::string& name, ISvcLocator* pSvcLocator );

  virtual ~IoSvc(); 
 
  // Assignment operator: 
  //IoSvc &operator=(const IoSvc &alg); 


  virtual StatusCode initialize() override;
  virtual StatusCode finalize() override;

  // Const methods: 

  virtual bool has_fd(Fd fd) const override;

  virtual Fd fd(const std::string& fname) const override;

  virtual const std::string& fname(Fd fd) const override;

  virtual IoType mode(Fd fd) const override;

  // Non-const methods: 

  virtual Fd open(const std::string& fname, IoType mode) override;

  virtual StatusCode close(Fd fd) override;

  // Private data: 
 private: 

  IoSvc();
 
  struct FdInfos {
    std::string fname;
    IIoSvc::IoType mode {};
  };
 
  typedef std::unordered_map<Fd, FdInfos> FdMap_t;

  FdMap_t m_fds;

  Fd m_last_fd;
}; 
 
#endif //> !ATHENASERVICES_IOSVC_H