DataSourceTime.hpp

/***************************************************************************
  tag: Peter Soetens  Wed Jan 18 14:11:39 CET 2006  DataSourceTime.hpp

                        DataSourceTime.hpp -  description
                           -------------------
    begin                : Wed January 18 2006
    copyright            : (C) 2006 Peter Soetens
    email                : peter.soetens@mech.kuleuven.be

 ***************************************************************************
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#include "TimeService.hpp"
#include "DataSource.hpp"

namespace RTT
{
    class RTT_API DataSourceTime
        : public DataSource<TimeService::Seconds>
    {
        TimeService::ticks stamp;
        mutable TimeService::Seconds last;
        TimeService* ts;
    public:
        DataSourceTime()
            : stamp( 0 ), last(0), ts( TimeService::Instance() )
        {}

        TimeService::Seconds get() const {
            return last = ts->secondsSince(stamp);
        }

        TimeService::Seconds value() const {
            return last;
        }

        void reset() {
            // get new pointer to ts also ?
            stamp = ts->getTicks();
        }

        DataSourceTime* clone() const {
            return new DataSourceTime();
        }

        DataSourceTime* copy( std::map<const DataSourceBase*, DataSourceBase*>& alreadyCloned ) const {
            return new DataSourceTime();
        }

    };
}