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Diffstat (limited to 'src/sim/power/mathexpr_powermodel.hh')
-rw-r--r-- | src/sim/power/mathexpr_powermodel.hh | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/sim/power/mathexpr_powermodel.hh b/src/sim/power/mathexpr_powermodel.hh new file mode 100644 index 000000000..563b1fa7f --- /dev/null +++ b/src/sim/power/mathexpr_powermodel.hh @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2016 ARM Limited + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * 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 copyright holders 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 + * 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. + * + * Authors: David Guillen Fandos + */ + +#ifndef __SIM_MATHEXPR_POWERMODEL_PM_HH__ +#define __SIM_MATHEXPR_POWERMODEL_PM_HH__ + +#include <unordered_map> + +#include "base/statistics.hh" +#include "params/MathExprPowerModel.hh" +#include "sim/mathexpr.hh" +#include "sim/power/power_model.hh" +#include "sim/sim_object.hh" + +/** + * 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 dyn_expr.eval( + std::bind(&MathExprPowerModel::getStatValue, + this, std::placeholders::_1) + ); + } + + /** + * Get the static power consumption. + * + * @return Power (Watts) consumed by this object (static component) + */ + double getStaticPower() const { + return st_expr.eval( + std::bind(&MathExprPowerModel::getStatValue, + this, std::placeholders::_1) + ); + } + + /** + * 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(); + + void regStats(); + + private: + + // Math expressions for dynamic and static power + MathExpr dyn_expr, st_expr; + + // Basename of the object in the gem5 stats hierachy + std::string basename; + + // Map that contains relevant stats for this power model + std::unordered_map<std::string, Stats::Info*> stats_map; +}; + +#endif |