RootPerfMonSvc.h

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//====================================================================
//  RootPerfMonSvc definition
//--------------------------------------------------------------------
//
//  Author     : M.Frank
//====================================================================
#ifndef GAUDIROOTCNV_GAUDIROOTPERFMONSVC_H
#define GAUDIROOTCNV_GAUDIROOTPERFMONSVC_H

#include <memory>
// Framework include files
#include "GaudiKernel/IIncidentListener.h"
#include "GaudiKernel/IIncidentSvc.h"
#include "GaudiKernel/Service.h"

#include "TFile.h"
#include "TTree.h"

#include "RootCnv/SysProcStat.h"

// C/C++ include files
#include <set>

/*
 * Gaudi namespace declaration
 */
namespace Gaudi
{

  class GAUDI_API RootPerfMonSvc : public extends<Service, IIncidentListener>
  {
  protected:
    Gaudi::Property<std::string> m_ioPerfStats{this, "IOPerfStats", "",
                                               "Enable TTree IOperfStats if not empty; otherwise perf stat file name"};
    // Passed parameters
    Gaudi::Property<std::string> m_setStreams{this, "Streams", "", ""};
    Gaudi::Property<std::string> m_basketSize{this, "BasketSize", "", ""};
    Gaudi::Property<std::string> m_bufferSize{this, "BufferSize", "", ""};
    Gaudi::Property<std::string> m_splitLevel{this, "SplitLevel", "", ""};

    SmartIF<IIncidentSvc> m_incidentSvc;
    std::unique_ptr<MsgStream> m_log;
    // Reference to a tree with statistics
    TTree* m_perfTree;
    // Reference to a file where statistics are persisted
    std::unique_ptr<TFile> m_perfFile;
    // Reference to all connected output files
    std::set<std::string> m_outputs;
    // The newest observed values
    Int_t m_eventType;
    ULong_t m_utime, m_stime, m_vsize;
    Long_t m_eventNumber, m_rss, m_time;

    // Types of records
    enum EventType { EVENT = 1, FSR = 2 };

    // Adding newest observed values to the tree with statistics
    virtual void record( EventType eventType );

    MsgStream& log() const { return *m_log; }

  public:
    using extends::extends;

    ~RootPerfMonSvc() override = default;

    StatusCode error( const std::string& msg );

    StatusCode initialize() override;

    StatusCode finalize() override;

    void handle( const Incident& incident ) override;

    // Service overload: Stop the service
    StatusCode stop() override;
  };
}

#endif // GAUDIROOTCNV_GAUDIROOTPERFMONSVC_H