Orocos Real-Time Toolkit  2.6.0
DataSourceTime.hpp
00001 /***************************************************************************
00002   tag: Peter Soetens  Wed Jan 18 14:11:39 CET 2006  DataSourceTime.hpp
00003 
00004                         DataSourceTime.hpp -  description
00005                            -------------------
00006     begin                : Wed January 18 2006
00007     copyright            : (C) 2006 Peter Soetens
00008     email                : peter.soetens@mech.kuleuven.be
00009 
00010  ***************************************************************************
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU General Public                   *
00013  *   License as published by the Free Software Foundation;                 *
00014  *   version 2 of the License.                                             *
00015  *                                                                         *
00016  *   As a special exception, you may use this file as part of a free       *
00017  *   software library without restriction.  Specifically, if other files   *
00018  *   instantiate templates or use macros or inline functions from this     *
00019  *   file, or you compile this file and link it with other files to        *
00020  *   produce an executable, this file does not by itself cause the         *
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00022  *   License.  This exception does not however invalidate any other        *
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00024  *   Public License.                                                       *
00025  *                                                                         *
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00030  *                                                                         *
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00036  ***************************************************************************/
00037 
00038 
00039 #include "../os/TimeService.hpp"
00040 #include "../internal/DataSource.hpp"
00041 #include "rtt-scripting-config.h"
00042 
00043 namespace RTT
00044 { namespace scripting {
00045 
00050     class RTT_SCRIPTING_API DataSourceTime
00051         : public internal::DataSource<os::TimeService::Seconds>
00052     {
00053         os::TimeService::ticks stamp;
00054         mutable os::TimeService::Seconds last;
00055         os::TimeService* ts;
00056     public:
00057         DataSourceTime()
00058             : stamp( 0 ), last(0), ts( os::TimeService::Instance() )
00059         {}
00060 
00061         os::TimeService::Seconds get() const {
00062             return last = ts->secondsSince(stamp);
00063         }
00064 
00065         os::TimeService::Seconds value() const {
00066             return last;
00067         }
00068 
00069         os::TimeService::Seconds const& rvalue() const {
00070             return last;
00071         }
00072 
00073         void reset() {
00074             // get new pointer to ts also ?
00075             stamp = ts->getTicks();
00076         }
00077 
00078         DataSourceTime* clone() const {
00079             return new DataSourceTime();
00080         }
00081 
00082         DataSourceTime* copy( std::map<const base::DataSourceBase*, base::DataSourceBase*>& alreadyCloned ) const {
00083             return new DataSourceTime();
00084         }
00085 
00086     };
00087 }}