MQTemplateProtocol.hpp
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00001 /***************************************************************************
00002   tag: Peter Soetens  Thu Oct 22 11:59:07 CEST 2009  MQTemplateProtocol.hpp
00003 
00004                         MQTemplateProtocol.hpp -  description
00005                            -------------------
00006     begin                : Thu October 22 2009
00007     copyright            : (C) 2009 Peter Soetens
00008     email                : peter@thesourcworks.com
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             *
00032  *   License along with this library; if not, write to the Free Software   *
00033  *   Foundation, Inc., 59 Temple Place,                                    *
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00035  *                                                                         *
00036  ***************************************************************************/
00037 
00038 
00039 #ifndef ORO_MQ_TEMPATE_PROTOCOL_HPP
00040 #define ORO_MQ_TEMPATE_PROTOCOL_HPP
00041 
00042 #include "MQLib.hpp"
00043 #include "../../types/TypeMarshaller.hpp"
00044 #include "MQChannelElement.hpp"
00045 #include "MQTemplateProtocolBase.hpp"
00046 
00047 #include <boost/type_traits/has_virtual_destructor.hpp>
00048 #include <boost/static_assert.hpp>
00049 
00050 namespace RTT
00051 { namespace mqueue
00052   {
00060       template<class T>
00061       class MQTemplateProtocol
00062           : public MQTemplateProtocolBase<T>
00063       {
00064       public:
00070           BOOST_STATIC_ASSERT( !boost::has_virtual_destructor<T>::value );
00074           typedef T UserType;
00075 
00076           virtual std::pair<void const*,int> fillBlob( base::DataSourceBase::shared_ptr source, void* blob, int size, void* cookie) const
00077           {
00078               if ( sizeof(T) <= (unsigned int)size)
00079                   return std::make_pair(source->getRawConstPointer(), int(sizeof(T)));
00080               return std::make_pair((void const*)0,int(0));
00081           }
00082 
00083           virtual bool updateFromBlob(const void* blob, int size, base::DataSourceBase::shared_ptr target, void* cookie) const
00084           {
00085             typename internal::AssignableDataSource<T>::shared_ptr ad = internal::AssignableDataSource<T>::narrow( target.get() );
00086             assert( size == sizeof(T) );
00087             if ( ad ) {
00088                 ad->set( *(T*)(blob) );
00089                 return true;
00090             }
00091             return false;
00092           }
00093 
00094           virtual unsigned int getSampleSize(base::DataSourceBase::shared_ptr ignored, void* cookie) const
00095           {
00096               // re-implement this in case of complex types, like std::vector<T>.
00097               return sizeof(T);
00098           }
00099       };
00100 }
00101 }
00102 
00103 #endif


rtt
Author(s): RTT Developers
autogenerated on Wed Aug 26 2015 16:15:49