mathexpr_powermodel.hh revision 11967
111527Sdavid.guillen@arm.com/* 211967Sandreas.sandberg@arm.com * Copyright (c) 2016-2017 ARM Limited 311527Sdavid.guillen@arm.com * All rights reserved 411527Sdavid.guillen@arm.com * 511527Sdavid.guillen@arm.com * The license below extends only to copyright in the software and shall 611527Sdavid.guillen@arm.com * not be construed as granting a license to any other intellectual 711527Sdavid.guillen@arm.com * property including but not limited to intellectual property relating 811527Sdavid.guillen@arm.com * to a hardware implementation of the functionality of the software 911527Sdavid.guillen@arm.com * licensed hereunder. You may use the software subject to the license 1011527Sdavid.guillen@arm.com * terms below provided that you ensure that this notice is replicated 1111527Sdavid.guillen@arm.com * unmodified and in its entirety in all distributions of the software, 1211527Sdavid.guillen@arm.com * modified or unmodified, in source code or in binary form. 1311527Sdavid.guillen@arm.com * 1411527Sdavid.guillen@arm.com * Redistribution and use in source and binary forms, with or without 1511527Sdavid.guillen@arm.com * modification, are permitted provided that the following conditions are 1611527Sdavid.guillen@arm.com * met: redistributions of source code must retain the above copyright 1711527Sdavid.guillen@arm.com * notice, this list of conditions and the following disclaimer; 1811527Sdavid.guillen@arm.com * redistributions in binary form must reproduce the above copyright 1911527Sdavid.guillen@arm.com * notice, this list of conditions and the following disclaimer in the 2011527Sdavid.guillen@arm.com * documentation and/or other materials provided with the distribution; 2111527Sdavid.guillen@arm.com * neither the name of the copyright holders nor the names of its 2211527Sdavid.guillen@arm.com * contributors may be used to endorse or promote products derived from 2311527Sdavid.guillen@arm.com * this software without specific prior written permission. 2411527Sdavid.guillen@arm.com * 2511527Sdavid.guillen@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2611527Sdavid.guillen@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2711527Sdavid.guillen@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2811527Sdavid.guillen@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2911527Sdavid.guillen@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3011527Sdavid.guillen@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3111527Sdavid.guillen@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3211527Sdavid.guillen@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3311527Sdavid.guillen@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3411527Sdavid.guillen@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3511527Sdavid.guillen@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3611527Sdavid.guillen@arm.com * 3711527Sdavid.guillen@arm.com * Authors: David Guillen Fandos 3811527Sdavid.guillen@arm.com */ 3911527Sdavid.guillen@arm.com 4011527Sdavid.guillen@arm.com#ifndef __SIM_MATHEXPR_POWERMODEL_PM_HH__ 4111527Sdavid.guillen@arm.com#define __SIM_MATHEXPR_POWERMODEL_PM_HH__ 4211527Sdavid.guillen@arm.com 4311527Sdavid.guillen@arm.com#include <unordered_map> 4411527Sdavid.guillen@arm.com 4511527Sdavid.guillen@arm.com#include "params/MathExprPowerModel.hh" 4611527Sdavid.guillen@arm.com#include "sim/mathexpr.hh" 4711527Sdavid.guillen@arm.com#include "sim/power/power_model.hh" 4811800Sbrandon.potter@amd.com 4911800Sbrandon.potter@amd.comnamespace Stats { 5011800Sbrandon.potter@amd.com class Info; 5111800Sbrandon.potter@amd.com} 5211527Sdavid.guillen@arm.com 5311527Sdavid.guillen@arm.com/** 5411527Sdavid.guillen@arm.com * A Equation power model. The power is represented as a combination 5511527Sdavid.guillen@arm.com * of some stats and automatic variables (like temperature). 5611527Sdavid.guillen@arm.com */ 5711527Sdavid.guillen@arm.comclass MathExprPowerModel : public PowerModelState 5811527Sdavid.guillen@arm.com{ 5911527Sdavid.guillen@arm.com public: 6011527Sdavid.guillen@arm.com 6111527Sdavid.guillen@arm.com typedef MathExprPowerModelParams Params; 6211527Sdavid.guillen@arm.com MathExprPowerModel(const Params *p); 6311527Sdavid.guillen@arm.com 6411527Sdavid.guillen@arm.com /** 6511527Sdavid.guillen@arm.com * Get the dynamic power consumption. 6611527Sdavid.guillen@arm.com * 6711527Sdavid.guillen@arm.com * @return Power (Watts) consumed by this object (dynamic component) 6811527Sdavid.guillen@arm.com */ 6911967Sandreas.sandberg@arm.com double getDynamicPower() const { return eval(dyn_expr); } 7011527Sdavid.guillen@arm.com 7111527Sdavid.guillen@arm.com /** 7211527Sdavid.guillen@arm.com * Get the static power consumption. 7311527Sdavid.guillen@arm.com * 7411527Sdavid.guillen@arm.com * @return Power (Watts) consumed by this object (static component) 7511527Sdavid.guillen@arm.com */ 7611967Sandreas.sandberg@arm.com double getStaticPower() const { return eval(st_expr); } 7711527Sdavid.guillen@arm.com 7811527Sdavid.guillen@arm.com /** 7911527Sdavid.guillen@arm.com * Get the value for a variable (maps to a stat) 8011527Sdavid.guillen@arm.com * 8111527Sdavid.guillen@arm.com * @param name Name of the variable to retrieve the value from 8211527Sdavid.guillen@arm.com * 8311527Sdavid.guillen@arm.com * @return Power (Watts) consumed by this object (static component) 8411527Sdavid.guillen@arm.com */ 8511527Sdavid.guillen@arm.com double getStatValue(const std::string & name) const; 8611527Sdavid.guillen@arm.com 8711527Sdavid.guillen@arm.com void startup(); 8811527Sdavid.guillen@arm.com 8911527Sdavid.guillen@arm.com void regStats(); 9011527Sdavid.guillen@arm.com 9111527Sdavid.guillen@arm.com private: 9211967Sandreas.sandberg@arm.com /** 9311967Sandreas.sandberg@arm.com * Evaluate an expression in the context of this object, fatal if 9411967Sandreas.sandberg@arm.com * evaluation fails. 9511967Sandreas.sandberg@arm.com * 9611967Sandreas.sandberg@arm.com * @param expr Expression to evaluate 9711967Sandreas.sandberg@arm.com * @return Value of expression. 9811967Sandreas.sandberg@arm.com */ 9911967Sandreas.sandberg@arm.com double eval(const MathExpr &expr) const; 10011967Sandreas.sandberg@arm.com 10111967Sandreas.sandberg@arm.com /** 10211967Sandreas.sandberg@arm.com * Evaluate an expression in the context of this object, set 10311967Sandreas.sandberg@arm.com * failed if evaluation failed. 10411967Sandreas.sandberg@arm.com * 10511967Sandreas.sandberg@arm.com * @param expr Expression to evaluate 10611967Sandreas.sandberg@arm.com * @return Value of expression. 10711967Sandreas.sandberg@arm.com */ 10811967Sandreas.sandberg@arm.com double tryEval(const MathExpr &expr) const; 10911527Sdavid.guillen@arm.com 11011527Sdavid.guillen@arm.com // Math expressions for dynamic and static power 11111527Sdavid.guillen@arm.com MathExpr dyn_expr, st_expr; 11211527Sdavid.guillen@arm.com 11311527Sdavid.guillen@arm.com // Basename of the object in the gem5 stats hierachy 11411527Sdavid.guillen@arm.com std::string basename; 11511527Sdavid.guillen@arm.com 11611527Sdavid.guillen@arm.com // Map that contains relevant stats for this power model 11711527Sdavid.guillen@arm.com std::unordered_map<std::string, Stats::Info*> stats_map; 11811967Sandreas.sandberg@arm.com 11911967Sandreas.sandberg@arm.com // Did the expression fail to evaluate (e.g., because a stat value 12011967Sandreas.sandberg@arm.com // can't be resolved) 12111967Sandreas.sandberg@arm.com mutable bool failed; 12211527Sdavid.guillen@arm.com}; 12311527Sdavid.guillen@arm.com 12411527Sdavid.guillen@arm.com#endif 125