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// $Id: flit.hpp 5188 2012-08-30 00:31:31Z dub $
/*
Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior University
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
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.
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 _FLIT_HPP_
#define _FLIT_HPP_
#include <iostream>
#include <stack>
#include "booksim.hpp"
#include "outputset.hpp"
class Flit {
public:
const static int NUM_FLIT_TYPES = 5;
enum FlitType { READ_REQUEST = 0,
READ_REPLY = 1,
WRITE_REQUEST = 2,
WRITE_REPLY = 3,
ANY_TYPE = 4 };
FlitType type;
int vc;
int cl;
bool head;
bool tail;
int ctime;
int itime;
int atime;
unsigned long long id;
unsigned long long pid;
bool record;
int src;
int dest;
int pri;
int hops;
bool watch;
int subnetwork;
// intermediate destination (if any)
mutable int intm;
// phase in multi-phase algorithms
mutable int ph;
// Fields for arbitrary data
void* data ;
// Lookahead route info
OutputSet la_route_set;
void Reset();
static Flit * New();
void Free();
static void FreeAll();
private:
Flit();
~Flit() {}
static stack<Flit *> _all;
static stack<Flit *> _free;
};
ostream& operator<<( ostream& os, const Flit& f );
#endif
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