Utilities/BesTimerSvc/include/BesTimerSvc/BesTimer.h

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// this is -*- c++ -*-
// $Id: BesTimer.h,v 1.4 2022/01/12 04:44:15 maqm Exp $
// $Name: BesTimerSvc-00-01-00 $
#ifndef BesTIMER_H_
#define BesTIMER_H_
#include <complex>
#include <iostream>
#include <string>
#include <sys/time.h>
 
class BesTimer {
public:
  // constructor
  BesTimer( const std::string name );
 
public:
  // retrieve timer name
  std::string& name() { return m_name; }
  // retrieve elapsed time
  float elapsed( void ) const { return ( m_started ? 0.0 : m_elapsed ); }
  // retrieve mean and rms time
  double mean( void ) const { return m_mean; }
  double rms( void ) const {
    double var = m_ms - m_mean * m_mean;
    return ( var > 0 ? sqrt( var ) : 0.0 );
  }
  // retrieve number of measurements
  int number_of_measurements( void ) const { return m_numberOfMeasurements; }
 
  // set and retrieve property name
  void         propName( std::string name ) { m_propName = name; }
  std::string& propName() { return m_propName; }
  // set and retrieve property value
  inline unsigned int propVal() { return m_propVal; }
  inline void         propVal( unsigned int val ) { m_propVal = val; }
 
  double meanPropVal() { return m_meanVal; }
  double meanTimePerObject() { return m_meanTimePerObject; }
 
  // define less than operator based on name
  bool operator<( BesTimer& it ) { return ( this->name() < it.name() ); }
 
  // methods to control clock
  void start( void );
  void stop( void );
  void pause( void );
  void resume( void );
  void reset();
 
private:
  std::string    m_name;
  struct timeval m_startTime;
  float          m_elapsed;
  double         m_mean; // mean time
  double         m_ms;   // mean squared time
  int            m_numberOfMeasurements;
  bool           m_started;
  bool           m_paused;
  std::string    m_propName;
  unsigned int   m_propVal;
  double         m_meanVal;
  double         m_meanTimePerObject;
  int            m_NmeanTimePerObject;
};
 
#endif // BesTIMER_H