Ticker.h

Go to the documentation of this file.

///
/// \file    Ticker.h
/// \brief   Notify subscribers when certain time/event intervals have elapsed
/// \version $Id: Ticker.h,v 1.6 2012-11-12 20:48:10 mbaird42 Exp $
/// \author  messier@indiana.edu
///
#ifndef OM_TICKER_H
#define OM_TICKER_H
#include <climits>
#include <ctime>
#include <list>
namespace om { class TickerSubscriber; }

namespace om {
  class Ticker {
  public:
    static Ticker& Instance();
    void Update(unsigned int run, unsigned int subrun);
    void Subscribe(TickerSubscriber* s, unsigned int which);

  private:
    void PublishRun();
    void PublishSubrun();
    void Publish30Sec();
    void Publish1Min();
    void Publish5Min();
    void Publish10Min();
    void Publish30Min();
    void PublishHour();
    void Publish24Hr();
  
  private:
    /// Ticker is a singleton - constructor is private.
    Ticker();
    
    /// Define what an uninitialized run/subrun number looks like
    static const unsigned int kUninitRun = UINT_MAX;
    
    /// Define what an uninitialized time looks like
    static const int kUninitTime = -1;

  private:
    unsigned int fLastRun;    ///< Run number of last update
    unsigned int fLastSubrun; ///< Subrun number of last update
    int          fLast30Sec;  ///< Time of last 30 second update
    int          fLast1Min;   ///< Time of last 1 minute update
    int          fLast5Min;   ///< Time of last 5 minute update
    int          fLast10Min;  ///< Time of last 10 minute update
    int          fLast30Min;  ///< Time of last 30 minute update
    int          fLastHour;   ///< Time of last hour update
    int          fLast24Hr;   ///< Time of last 24 hour update
    std::list<TickerSubscriber*> f30SecSubscribers;
    std::list<TickerSubscriber*> f1MinSubscribers;
    std::list<TickerSubscriber*> f5MinSubscribers;
    std::list<TickerSubscriber*> f10MinSubscribers;
    std::list<TickerSubscriber*> f30MinSubscribers;
    std::list<TickerSubscriber*> fHourSubscribers;
    std::list<TickerSubscriber*> f24HrSubscribers;
    std::list<TickerSubscriber*> fRunSubscribers;
    std::list<TickerSubscriber*> fSubrunSubscribers;
  };
}
#endif
////////////////////////////////////////////////////////////////////////