ISvcLocator.h

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* (c) Copyright 1998-2025 CERN for the benefit of the LHCb and ATLAS collaborations *
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* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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#pragma once
 
#include <GaudiKernel/IInterface.h>
#include <GaudiKernel/ISvcManager.h>
#include <GaudiKernel/SmartIF.h>
#include <GaudiKernel/TypeNameString.h>
#include <list>
#include <string>
 
class IService;
namespace Gaudi::Monitoring {
  struct Hub;
}
namespace Gaudi {
  namespace Interfaces {
    struct IOptionsSvc;
  }
} // namespace Gaudi
 
#define GAUDI_HAS_IOPTIONS_SVC

class GAUDI_API ISvcLocator : virtual public IInterface {
public:
  DeclareInterfaceID( ISvcLocator, 3, 0 );

  virtual const std::list<IService*>& getServices() const = 0;

  virtual bool existsService( std::string_view name ) const = 0;

  virtual SmartIF<IService>& service( const Gaudi::Utils::TypeNameString& typeName, const bool createIf = true ) = 0;

  template <typename T>
  inline SmartIF<T> service( const Gaudi::Utils::TypeNameString& typeName, const bool createIf = true ) {
    return SmartIF<T>{ service( typeName, createIf ) };
  }
 
  // try to access a different interface of  the _current_ serviceLocator...
  template <typename IFace>
  SmartIF<IFace> as() {
    return SmartIF<IFace>{ this };
  }

  Gaudi::Interfaces::IOptionsSvc& getOptsSvc();
 
  Gaudi::Monitoring::Hub& monitoringHub();
};