gr_select_handler.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2005 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_SELECT_HANDLER_H
00024 #define INCLUDED_GR_SELECT_HANDLER_H
00025 
00026 #include <boost/shared_ptr.hpp>
00027 
00028 class gr_select_handler;
00029 typedef boost::shared_ptr<gr_select_handler> gr_select_handler_sptr;
00030 
00031 
00038 class gr_select_handler
00039 {
00040   int   d_fd;
00041 
00042 protected:
00043   gr_select_handler(int file_descriptor);
00044 
00045 public:
00046   virtual ~gr_select_handler();
00047 
00048   int fd() const { return d_fd; }
00049   int file_descriptor() const { return d_fd; }
00050 
00057   virtual void handle_read() = 0;
00058 
00065   virtual void handle_write() = 0;
00066 
00073   virtual bool readable() { return true; }
00074 
00081   virtual bool writable() { return true; }
00082 };
00083 
00084 #endif /* INCLUDED_GR_SELECT_HANDLER_H */

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