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TimePoint.h

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// $Header: /nfs/slac/g/glast/ground/cvs/GaudiKernel/GaudiKernel/TimePoint.h,v 1.1.1.1 2001/04/18 18:14:18 tlindner Exp $
#ifndef GAUDIKERNEL_TIMEPOINT_H
#define GAUDIKERNEL_TIMEPOINT_H

// Include files
#include "GaudiKernel/ITime.h"
#include <time.h>


class TimePoint: public ITime
{
public:
  TimePoint() : m_time( time(0) * (longlong)1.0e+9 ) { }
  TimePoint( const ITime::AbsoluteTime& atime ) : m_time( atime ) { }  
  TimePoint( const ITime& itime ) : m_time( itime.absoluteTime() ) { }
  ~TimePoint(){ }
  
 public:  
  ITime::AbsoluteTime  absoluteTime() const { return m_time; }
  
  ITime::DimensionedTime seconds() const { return (DimensionedTime) ( absoluteTime() / 1.0e+9 ) ; }      
  
  ITime::DimensionedTime minutes() const { return seconds() / 60.0 ; }     
  
  ITime::DimensionedTime hours() const { return minutes() / 60.0 ; }
  
  ITime::DimensionedTime days() const { return hours  () / 24.0 ; }
  
  unsigned long msb() const { return m_time >> 32;}
  unsigned long lsb() const { return (m_time << 32) >> 32;}

  bool operator==( const ITime& T ) const { return absoluteTime()==T.absoluteTime(); }
  bool operator!=( const ITime& T ) const { return absoluteTime()!=T.absoluteTime(); }
  bool operator<=( const ITime& T ) const { return absoluteTime()<=T.absoluteTime(); }
  bool operator>=( const ITime& T ) const { return absoluteTime()>=T.absoluteTime(); }
  bool operator< ( const ITime& T ) const { return absoluteTime()< T.absoluteTime(); }
  bool operator> ( const ITime& T ) const { return absoluteTime()> T.absoluteTime(); }
  
  ITime& operator+=( const ITime& T );

  ITime& operator-=( const ITime& T );
  
  virtual std::ostream&  printOut( std::ostream& ) const;  
    
 private:
  
  ITime::AbsoluteTime  m_time;    
};


  static const  TimePoint time_absolutepast((longlong)LONGLONG_MIN);
  static const  TimePoint time_absolutefuture((longlong)LONGLONG_MAX);

inline ITime& TimePoint::operator+=( const ITime& T ) 
{ 
  m_time +=T.absoluteTime(); 
  m_time = ( m_time > time_absolutefuture.absoluteTime() )  ? time_absolutefuture.absoluteTime() : m_time ; 
  m_time = ( m_time < time_absolutepast  .absoluteTime() )  ? time_absolutepast  .absoluteTime() : m_time ; 
  return *this; 
} 


inline ITime& TimePoint::operator-=( const ITime& T ) 
{ 
  m_time -= T.absoluteTime(); 
  m_time  = ( m_time > time_absolutefuture.absoluteTime() )  ? time_absolutefuture.absoluteTime() : m_time ; 
  m_time  = ( m_time < time_absolutepast  .absoluteTime() )  ? time_absolutepast  .absoluteTime() : m_time ; 
  return *this; 
} 

inline std::ostream&  TimePoint::printOut( std::ostream& os ) const
{
  return os << "Time is " << seconds() << "[s]";
};

#endif   //   GAUDIKERNEL_TIMEPOINT_H

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