IItemListSvc.h

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/*
  Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
*/
 
// IItemListSvc.h 
// Header file for class IItemListSvc
// Author: S.Binet<binet@cern.ch>
//         B.Radics<radbal@cern.ch>
#ifndef ATHENAKERNEL_IITEMLISTSVC_H 
#define ATHENAKERNEL_IITEMLISTSVC_H 1
 
// STL includes
#include <vector>
#include <string>
#include <map>
#include <mutex>
 
// fwd declares
class INamedInterface;
 
 
class IItemListSvc  
  : virtual public ::INamedInterface
{ 
 
public:
  DeclareInterfaceID (IItemListSvc,1,0);
 
  virtual ~IItemListSvc();
 
  // Public interface methods
  // non-const
  //
  // add a stream-item pair to the service listing
  virtual StatusCode addStreamItem(const std::string& stream, const std::string& itemname) = 0;
  // remove Item 
  virtual StatusCode removeStreamItem(const std::string& stream, const std::string& itemname) = 0;
  //
  // const
  //
  // check if a stream-item is registered
  //virtual bool containsItem(const std::string itemname) const = 0;
  virtual bool containsItem(const std::string& itemname, const std::string& stream="ANY") const = 0;
  // check how many streams contain an item
  //virtual long countItemInstances(const std::string itemname) const = 0;
  // get the streams for a given item
  virtual std::vector<std::string> getStreamsForItem(const std::string& itemname) const = 0;
  // get the items for a given stream
  virtual std::vector<std::string> getItemsForStream(const std::string& stream) const = 0;
 
  // get mutex for streaming itemlist to output
  virtual std::mutex& streamMutex();
 
 
private:
 
  std::mutex m_stream_mut;
 
}; 
 
// Inline methods: 
 
inline
std::mutex&
IItemListSvc::streamMutex()
{
  return m_stream_mut;
}
 
#endif //> !ATHENAKERNEL_IITEMLISTSVC_H