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// $Id: RtclAttnShuttle.hpp 495 2013-03-06 17:13:48Z mueller $
//
// Copyright 2013- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
//
// This program is free software; you may redistribute and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 2, or at your option any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for complete details.
// 
// Revision History: 
// Date         Rev Version  Comment
// 2013-03-01   493   1.0    Initial version
// 2013-01-14   475   0.5    First draft
// ---------------------------------------------------------------------------
 
/*!
  \file
  \version $Id: RtclAttnShuttle.hpp 495 2013-03-06 17:13:48Z mueller $
  \brief   Declaration of class RtclAttnShuttle.
*/
 
#ifndef included_Retro_RtclAttnShuttle
#define included_Retro_RtclAttnShuttle 1
 
#include "tcl.h"
 
#include <cstdint>
 
#include "librtcltools/RtclOPtr.hpp"
#include "librlink/RlinkServer.hpp"
 
namespace Retro {
 
  class RtclAttnShuttle {
    public:
                    RtclAttnShuttle(uint16_t mask, Tcl_Obj* pobj);
                   ~RtclAttnShuttle();
 
      uint16_t      Mask() const;
      Tcl_Obj*      Script() const;
 
      void          Add(RlinkServer* pserv, Tcl_Interp* interp);
      void          Remove();
 
    protected:
      int           AttnHandler(const RlinkServer::AttnArgs& args);
      void          TclChannelHandler(int mask);
      static void   ThunkTclChannelHandler(ClientData cdata, int mask);
 
    protected:
      RlinkServer*  fpServ;                 //!< RlinkServer used
      Tcl_Interp*   fpInterp;               //!< Tcl interpreter used
      int           fFdPipeRead;            //!< attn pipe read fd
      int           fFdPipeWrite;           //!< attn pipe write fd
      Tcl_Channel   fShuttleChn;            //!< Tcl channel
      uint16_t      fMask;                  //!< attn mask
      RtclOPtr      fpScript;               //!< Tcl handler script (as Tcl_Obj)
  };
 
} // end namespace Retro
 
#include "RtclAttnShuttle.ipp"
 
#endif