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//
// iodev.hh : Diffusion IO Devices Include File
// authors : Fabio Silva
//
// Copyright (C) 2000-2002 by the University of Southern California
// $Id: iodev.hh,v 1.8 2005/09/13 04:53:49 tomh Exp $
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License,
// version 2, as published by the Free Software Foundation.
//
// 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 more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
//
// Linking this file statically or dynamically with other modules is making
// a combined work based on this file. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
// In addition, as a special exception, the copyright holders of this file
// give you permission to combine this file with free software programs or
// libraries that are released under the GNU LGPL and with code included in
// the standard release of ns-2 under the Apache 2.0 license or under
// otherwise-compatible licenses with advertising requirements (or modified
// versions of such code, with unchanged license). You may copy and
// distribute such a system following the terms of the GNU GPL for this
// file and the licenses of the other code concerned, provided that you
// include the source code of that other code when and as the GNU GPL
// requires distribution of source code.
//
// Note that people who make modified versions of this file are not
// obligated to grant this special exception for their modified versions;
// it is their choice whether to do so. The GNU General Public License
// gives permission to release a modified version without this exception;
// this exception also makes it possible to release a modified version
// which carries forward this exception.
//
// This file defines the basic interface between diffusion device
// drivers and the Diffusion Core (or the Diffusion Routing Library
// API). It provides basic functionality to send and receive packets
// and also keeps track of input/output file descriptors that can be
// used on select().
#ifndef _IODEV_HH_
#define _IODEV_HH_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#include <list>
#include "header.hh"
#include "tools.hh"
using namespace std;
class DiffusionIO {
public:
DiffusionIO();
virtual ~DiffusionIO(){
// Nothing to do
};
virtual void addInFDS(fd_set *fds, int *max);
virtual bool hasFD(int fd);
virtual int checkInFDS(fd_set *fds);
virtual DiffPacket recvPacket(int fd) = 0;
virtual void sendPacket(DiffPacket p, int len, int dst) = 0;
protected:
int num_out_descriptors_;
int num_in_descriptors_;
int max_in_descriptor_;
list<int> in_fds_;
list<int> out_fds_;
};
typedef list<DiffusionIO *> DeviceList;
#endif // !_IODEV_HH_
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