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/*
* Copyright (c) 2016-2017, 2020 ARM Limited
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*
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*
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* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef __SIM_MATHEXPR_POWERMODEL_PM_HH__
#define __SIM_MATHEXPR_POWERMODEL_PM_HH__
#include <unordered_map>
#include "params/MathExprPowerModel.hh"
#include "sim/mathexpr.hh"
#include "sim/power/power_model.hh"
namespace Stats {
class Info;
}
/**
* A Equation power model. The power is represented as a combination
* of some stats and automatic variables (like temperature).
*/
class MathExprPowerModel : public PowerModelState
{
public:
typedef MathExprPowerModelParams Params;
MathExprPowerModel(const Params *p);
/**
* Get the dynamic power consumption.
*
* @return Power (Watts) consumed by this object (dynamic component)
*/
double getDynamicPower() const { return eval(dyn_expr); }
/**
* Get the static power consumption.
*
* @return Power (Watts) consumed by this object (static component)
*/
double getStaticPower() const { return eval(st_expr); }
/**
* Get the value for a variable (maps to a stat)
*
* @param name Name of the variable to retrieve the value from
*
* @return Power (Watts) consumed by this object (static component)
*/
double getStatValue(const std::string & name) const;
void startup() override;
void regStats() override;
private:
/**
* Evaluate an expression in the context of this object, fatal if
* evaluation fails.
*
* @param expr Expression to evaluate
* @return Value of expression.
*/
double eval(const MathExpr &expr) const;
// Math expressions for dynamic and static power
MathExpr dyn_expr, st_expr;
// Map that contains relevant stats for this power model
std::unordered_map<std::string, const Stats::Info*> statsMap;
};
#endif