91d83cc8a1
The create() method on Params structs usually instantiate SimObjects using a constructor which takes the Params struct as a parameter somehow. There has been a lot of needless variation in how that was done, making it annoying to pass Params down to base classes. Some of the different forms were: const Params & Params & Params * const Params * Params const* This change goes through and fixes up every constructor and every create() method to use the const Params & form. We use a reference because the Params struct should never be null. We use const because neither the create method nor the consuming object should modify the record of the parameters as they came in from the config. That would make consuming them not idempotent, and make it impossible to tell what the actual simulation configuration was since it would change from any user visible form (config script, config.ini, dot pdf output). Change-Id: I77453cba52fdcfd5f4eec92dfb0bddb5a9945f31 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35938 Reviewed-by: Gabe Black <gabeblack@google.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com>
106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
/*
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* Copyright (c) 2016-2017, 2020 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SIM_MATHEXPR_POWERMODEL_PM_HH__
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#define __SIM_MATHEXPR_POWERMODEL_PM_HH__
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#include <unordered_map>
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#include "params/MathExprPowerModel.hh"
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#include "sim/mathexpr.hh"
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#include "sim/power/power_model.hh"
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namespace Stats {
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class Info;
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}
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/**
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* A Equation power model. The power is represented as a combination
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* of some stats and automatic variables (like temperature).
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*/
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class MathExprPowerModel : public PowerModelState
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{
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public:
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typedef MathExprPowerModelParams Params;
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MathExprPowerModel(const Params &p);
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/**
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* Get the dynamic power consumption.
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*
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* @return Power (Watts) consumed by this object (dynamic component)
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*/
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double getDynamicPower() const override { return eval(dyn_expr); }
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/**
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* Get the static power consumption.
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*
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* @return Power (Watts) consumed by this object (static component)
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*/
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double getStaticPower() const override { return eval(st_expr); }
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/**
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* Get the value for a variable (maps to a stat)
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*
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* @param name Name of the variable to retrieve the value from
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*
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* @return Power (Watts) consumed by this object (static component)
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*/
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double getStatValue(const std::string & name) const;
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void startup() override;
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void regStats() override;
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private:
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/**
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* Evaluate an expression in the context of this object, fatal if
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* evaluation fails.
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*
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* @param expr Expression to evaluate
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* @return Value of expression.
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*/
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double eval(const MathExpr &expr) const;
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// Math expressions for dynamic and static power
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MathExpr dyn_expr, st_expr;
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// Map that contains relevant stats for this power model
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std::unordered_map<std::string, const Stats::Info*> statsMap;
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};
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#endif
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