IAlgorithm.h

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* (c) Copyright 1998-2024 CERN for the benefit of the LHCb and ATLAS collaborations *
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#ifndef GAUDIKERNEL_IALGORITHM_H
#define GAUDIKERNEL_IALGORITHM_H
 
// Include files
#include <GaudiKernel/INamedInterface.h>
#include <GaudiKernel/IStateful.h>
#include <string>
 
class IAlgTool;
class AlgResourcePool;
class AlgExecState;
class EventContext;
 
namespace Gaudi {
  class StringKey;
}
 
class GAUDI_API IAlgorithm : virtual public extend_interfaces<INamedInterface, IStateful> {
public:
  friend AlgResourcePool;
 
  DeclareInterfaceID( IAlgorithm, 7, 0 );
 
  virtual const std::string& version() const = 0;
 
  virtual const std::string& type() const           = 0;
  virtual void               setType( std::string ) = 0;
 
  virtual const Gaudi::StringKey& nameKey() const = 0;
 
  virtual unsigned int index() const = 0;
 
  virtual bool isClonable() const { return false; }
 
  virtual unsigned int cardinality() const = 0;
 
  virtual const std::vector<std::string>& neededResources() const = 0;
 
  virtual StatusCode execute( const EventContext& ) const = 0;
 
  virtual bool isInitialized() const = 0;
  virtual bool isFinalized() const = 0;
 
  virtual StatusCode sysInitialize() = 0;
 
  virtual StatusCode sysStart() = 0;
 
  virtual StatusCode sysReinitialize() = 0;
 
  virtual StatusCode sysRestart() = 0;
 
#define GAUDI_SYSEXECUTE_WITHCONTEXT 1
 
  virtual StatusCode sysExecute( const EventContext& ) = 0;
 
  virtual StatusCode sysStop() = 0;
 
  virtual StatusCode sysFinalize() = 0;
 
  virtual AlgExecState& execState( const EventContext& ctx ) const = 0;
 
  virtual bool isEnabled() const = 0;
 
  virtual bool isSequence() const = 0;
 
  virtual std::ostream& toControlFlowExpression( std::ostream& os ) const = 0;
 
  virtual void setIndex( const unsigned int& idx ) = 0;
 
  virtual bool isReEntrant() const = 0;
};
 
#endif // GAUDIKERNEL_IALGORITHM_H