Orocos Real-Time Toolkit  2.6.0
ConnInputEndPoint.hpp
00001 /***************************************************************************
00002   tag: Peter Soetens  Thu Oct 22 11:59:08 CEST 2009  ConnInputEndPoint.hpp
00003 
00004                         ConnInputEndPoint.hpp -  description
00005                            -------------------
00006     begin                : Thu October 22 2009
00007     copyright            : (C) 2009 Sylvain Joyeux
00008     email                : sylvain.joyeux@m4x.org
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         *
00021  *   resulting executable to be covered by the GNU General Public          *
00022  *   License.  This exception does not however invalidate any other        *
00023  *   reasons why the executable file might be covered by the GNU General   *
00024  *   Public License.                                                       *
00025  *                                                                         *
00026  *   This library is distributed in the hope that it will be useful,       *
00027  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00028  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00029  *   Lesser General Public License for more details.                       *
00030  *                                                                         *
00031  *   You should have received a copy of the GNU General Public             *
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00033  *   Foundation, Inc., 59 Temple Place,                                    *
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00035  *                                                                         *
00036  ***************************************************************************/
00037 
00038 
00039 #ifndef ORO_CONN_INPUT_ENDPOINT_HPP
00040 #define ORO_CONN_INPUT_ENDPOINT_HPP
00041 
00042 #include "Channels.hpp"
00043 
00044 namespace RTT
00045 { namespace internal {
00046 
00050     template<typename T>
00051     class ConnInputEndpoint : public base::ChannelElement<T>
00052     {
00053         OutputPort<T>* port;
00054         ConnID* cid;
00055 
00056     public:
00057         ConnInputEndpoint(OutputPort<T>* port, ConnID* id)
00058             : port(port), cid(id) { }
00059 
00060         ~ConnInputEndpoint()
00061         {
00062             //this->disconnect(false); // inform port (if any) we're gone.
00063             delete cid;
00064         }
00065 
00066         using base::ChannelElement<T>::read;
00067 
00071         virtual FlowStatus read(typename base::ChannelElement<T>::reference_t sample)
00072         { return NoData; }
00073 
00074         virtual bool inputReady() {
00075             return true;
00076         }
00077 
00078         virtual void disconnect(bool forward)
00079         {
00080             // Call the base class first
00081             base::ChannelElement<T>::disconnect(forward);
00082 
00083             OutputPort<T>* port = this->port;
00084             if (port && !forward)
00085             {
00086                 this->port   = 0;
00087                 port->removeConnection( cid );
00088             }
00089         }
00090 
00091         virtual base::PortInterface* getPort() const {
00092             return this->port;
00093         }
00094 
00095     };
00096 
00097 }}
00098 
00099 #endif
00100