IG4RunTool.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef G4ATLASINTERFACES_IG4RunTool_H
#define G4ATLASINTERFACES_IG4RunTool_H
 
#include <GaudiKernel/IAlgTool.h>
#include <memory>
 
// Forward declarations
class AtlasG4SyncEventUserInfo;

 
class IG4RunTool : virtual public IAlgTool {
 public:
  // type alias
  using UPEvent = std::unique_ptr<AtlasG4SyncEventUserInfo>;
 
  DeclareInterfaceID(IG4RunTool, 1, 0);
 
  // Synchronization methods
  virtual void NotifyBeginRun() = 0;
  virtual StatusCode WaitBeginRun() = 0;
  
  // Event queue management
  virtual size_t Size() const = 0;
  // Push a non-null event to the queue. Null events are rejected; queue
  // shutdown is controlled internally by G4RunTool::finalize().
  virtual void PushEvent(UPEvent) = 0;
  // pop the event from the queue and return it
  virtual UPEvent GetEvent() = 0;
};
 
#endif