uwtokenbus_hdr.h

Go to the documentation of this file.

//
// Copyright (c) 2021 Regents of the SIGNET lab, University of Padova.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. Neither the name of the University of Padova (SIGNET lab) nor the
//    names of its contributors may be used to endorse or promote products
//    derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
 
#ifndef UWTOKENBUS_HDR_H
#define UWTOKENBUS_HDR_H
 
#include <cstdint>
#include <packet.h>
#include <limits>
 
typedef uint_least16_t tokenid_t; 
constexpr size_t TOKENIDMAX = std::numeric_limits<tokenid_t>::max(); 
 
extern packet_t PT_UWTOKENBUS;
typedef struct hdr_tokenbus {
public:
    static int offset_; 
    tokenid_t token_id_; 
    tokenid_t & tokenId()
    {
        return (token_id_);
    }
    
    size_t getSize() const
    {
        return sizeof(tokenid_t); 
    }
 
    inline static int & offset()
    {
        return offset_;
    }
 
    inline static struct hdr_tokenbus *
    access(const Packet *p)
    {
        return (struct hdr_tokenbus *) p->access(offset_);
    }
} hdr_tokenbus;
 
#define HDR_TOKENBUS(p) \
    (hdr_tokenbus::access(p))   
#endif