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// Copyright (c) 2009-2011, Tor M. Aamodt, Inderpreet Singh
// The University of British Columbia
// 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.
// Neither the name of The University of British Columbia 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 HOLDER 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.
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <set>
#include "assert.h"
#ifndef SCOREBOARD_H_
#define SCOREBOARD_H_
#include "../abstract_hardware_model.h"
class Scoreboard {
public:
Scoreboard( unsigned sid, unsigned n_warps );
void reserveRegisters(const warp_inst_t *inst);
void releaseRegisters(const warp_inst_t *inst);
void releaseRegister(unsigned wid, unsigned regnum);
bool checkCollision(unsigned wid, const inst_t *inst) const;
bool pendingWrites(unsigned wid) const;
void printContents() const;
const bool islongop(unsigned warp_id, unsigned regnum);
private:
void reserveRegister(unsigned wid, unsigned regnum);
int get_sid() const { return m_sid; }
unsigned m_sid;
// keeps track of pending writes to registers
// indexed by warp id, reg_id => pending write count
std::vector< std::set<unsigned> > reg_table;
//Register that depend on a long operation (global, local or tex memory)
std::vector< std::set<unsigned> > longopregs;
};
#endif /* SCOREBOARD_H_ */
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