forwarding.h

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// -*- C++ -*-
//
//  This file is part of Siena, a wide-area event notification system.
//  See http://www.inf.usi.ch/carzaniga/siena/
//
//  Authors: Antonio Carzaniga
//  See the file AUTHORS for full details. 
//
//  Copyright (C) 2001-2002 University of Colorado
//
//  Siena is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//  
//  Siena 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 Siena.  If not, see <http://www.gnu.org/licenses/>.
//
#ifndef SIENA_FORWARDING_H
#define SIENA_FORWARDING_H

#include <cstddef>

#include <siena/exceptions.h>
#include <siena/types.h>
#include <siena/allocator.h>

namespace siena {

typedef unsigned int            if_t;

typedef unsigned int            ifid_t;

class MatchHandler {
public:
    virtual             ~MatchHandler() {};

    virtual bool        output(if_t) = 0;
};

class MatchMessageHandler {
public:
    virtual             ~MatchMessageHandler() {};

    virtual bool        output(if_t, const message &) = 0;
};


class ForwardingTable {
public:
    virtual             ~ForwardingTable() {};

    virtual void        ifconfig(if_t, const predicate &) = 0;
    virtual void        consolidate() {};

    virtual void        match(const message &, MatchHandler &) const 
 = 0;

    virtual void        match(const message &, MatchMessageHandler &) const 
 = 0;

    virtual void        clear() = 0;

    virtual void        clear_recycle() = 0;

    virtual size_t      allocated_bytesize() const = 0;

    virtual size_t      bytesize() const = 0;
};

} // end namespace siena

//
// for source-level compatibility, we also include fwdtable.h here
//
#include <siena/fwdtable.h>

#endif