timer.h

// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2:
//
// $Id: timer.h,v 1.17 2005/07/29 12:38:15 amoll Exp $
//

#ifndef BALL_SYSTEM_TIMER_H
#define BALL_SYSTEM_TIMER_H

#ifndef BALL_COMMON_H
# include <BALL/common.h>
#endif

#ifdef BALL_HAS_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef BALL_HAS_TIME_H
# include <time.h>
#endif



#include <iostream>

namespace BALL
{
  class BALL_EXPORT Timer
  {
    public:
    

    Timer();              

    Timer(Timer& timer);              

    virtual ~Timer();



    void clear();     
  
    bool start();     

    bool stop();

    void reset();

      

    double getClockTime() const;

    double getUserTime() const;   

    double getSystemTime() const;

    double getCPUTime() const;



    Timer& operator = (const Timer& timer);



    bool isRunning() const;

    bool operator == (const Timer& timer) const;

    bool operator != (const Timer& timer) const;

    bool operator < (const Timer& timer) const;

    bool operator <= (const Timer& timer) const;

    bool operator >= (const Timer& timer) const;

    bool operator > (const Timer& timer) const;


    
    bool isValid() const;
    
    void dump(::std::ostream& s = ::std::cout, Size depth = 0L) const;


    protected:

    private:

    static LongSize cpu_speed_;

    #ifdef BALL_HAS_WINDOWS_PERFORMANCE_COUNTER
      static PointerSizeUInt clock_speed_;
    #endif

    // state of timer, either true(on) or false(off) 
    bool is_running_;

    // clock seconds value when the timer was last started 
    LongSize last_secs_;  

    // clock useconds value when the timer was last started 
    LongSize last_usecs_;   

    // user time when the timer was last started 
    clock_t last_user_time_;   

    // system time when the timer was last started 
    clock_t last_system_time_; 
     
    // current accumulated clock seconds 
    LongSize current_secs_;   

    // current accumulated clock useconds 
    LongSize current_usecs_;    
    
    // current accumulated user time 
    clock_t current_user_time_;   

    // current accumulated user time 
    clock_t current_system_time_;
  };

# ifndef BALL_NO_INLINE_FUNCTIONS
#   include "timer.iC"
# endif
  
}

#endif // BALL_SYSTEM_TIMER_H

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