WriteHelper.hh

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00001 // $Id: WriteHelper.hh 1742 2010-11-04 14:51:56Z g0dil $
00002 //
00003 // Copyright (C) 2006 Stefan Bund <g0dil@berlios.de>
00004 //
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License as published by
00007 // the Free Software Foundation; either version 2 of the License, or
00008 // (at your option) any later version.
00009 //
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU General Public License
00016 // along with this program; if not, write to the
00017 // Free Software Foundation, Inc.,
00018 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00019 // Copyright (C) 2006
00020 
00024 #ifndef HH_SENF_Scheduler_WriteHelper_
00025 #define HH_SENF_Scheduler_WriteHelper_ 1
00026 
00027 // Custom includes
00028 #include <string>
00029 #include <boost/intrusive_ptr.hpp>
00030 #include <boost/function.hpp>
00031 #include <senf/Utils/intrusive_refcount.hh>
00032 #include "FdEvent.hh"
00033 
00034 //#include "WriteHelper.mpp"
00035 //-/////////////////////////////////////////////////////////////////////////////////////////////////
00036 
00037 namespace senf {
00038 
00053     template <class Handle>
00054     class WriteHelper
00055         : public senf::intrusive_refcount
00056     {
00057     public:
00058         //-////////////////////////////////////////////////////////////////////////
00059         // Types
00060 
00061         typedef boost::intrusive_ptr<WriteHelper> ptr; 
00062         typedef boost::function<void (ptr)> Callback; 
00063 
00064         //-////////////////////////////////////////////////////////////////////////
00066         //\{
00067 
00068         static ptr dispatch(Handle handle, std::string const & data, Callback callback);
00070 
00079         //\}
00080         //-////////////////////////////////////////////////////////////////////////
00081 
00082         Handle handle() const;
00083 
00084         std::string const & data() const; 
00085 
00089         bool complete() const;          
00090         bool error() const;             
00091         void throw_error() const;       
00092 
00093         void revoke();                  
00094 
00095     protected:
00096 
00097     private:
00098         WriteHelper(Handle handle, std::string const & data, Callback callback);
00099 
00100         static void dispatchProcess(ptr helper, Handle handle,
00101                                     senf::scheduler::FdEvent::Events event);
00102         void process(Handle handle, senf::scheduler::FdEvent::Events event);
00103         void done();
00104 
00105         Handle handle_;
00106         scheduler::FdEvent fde_;
00107         mutable std::string data_;
00108         Callback callback_;
00109 
00110         mutable std::string::iterator offset_;
00111         int errno_;
00112     };
00113 
00114 
00115 }
00116 
00117 //-/////////////////////////////////////////////////////////////////////////////////////////////////
00118 //#include "WriteHelper.cci"
00119 #include "WriteHelper.ct"
00120 #include "WriteHelper.cti"
00121 //#include "WriteHelper.mpp"
00122 #endif
00123 
00124 
00125 // Local Variables:
00126 // mode: c++
00127 // fill-column: 100
00128 // c-file-style: "senf"
00129 // indent-tabs-mode: nil
00130 // ispell-local-dictionary: "american"
00131 // compile-command: "scons -u test"
00132 // comment-column: 40
00133 // End:
SENF Extensible Network Framework

WriteHelper.hh
