mathexpr_powermodel.cc revision 13021:f57df5a2660e
113219Sodanrc@yahoo.com.br/* 213219Sodanrc@yahoo.com.br * Copyright (c) 2016-2017 ARM Limited 313219Sodanrc@yahoo.com.br * All rights reserved 413219Sodanrc@yahoo.com.br * 513219Sodanrc@yahoo.com.br * The license below extends only to copyright in the software and shall 613219Sodanrc@yahoo.com.br * not be construed as granting a license to any other intellectual 713219Sodanrc@yahoo.com.br * property including but not limited to intellectual property relating 813219Sodanrc@yahoo.com.br * to a hardware implementation of the functionality of the software 913219Sodanrc@yahoo.com.br * licensed hereunder. You may use the software subject to the license 1013219Sodanrc@yahoo.com.br * terms below provided that you ensure that this notice is replicated 1113219Sodanrc@yahoo.com.br * unmodified and in its entirety in all distributions of the software, 1213219Sodanrc@yahoo.com.br * modified or unmodified, in source code or in binary form. 1313219Sodanrc@yahoo.com.br * 1413219Sodanrc@yahoo.com.br * Redistribution and use in source and binary forms, with or without 1513219Sodanrc@yahoo.com.br * modification, are permitted provided that the following conditions are 1613219Sodanrc@yahoo.com.br * met: redistributions of source code must retain the above copyright 1713219Sodanrc@yahoo.com.br * notice, this list of conditions and the following disclaimer; 1813219Sodanrc@yahoo.com.br * redistributions in binary form must reproduce the above copyright 1913219Sodanrc@yahoo.com.br * notice, this list of conditions and the following disclaimer in the 2013219Sodanrc@yahoo.com.br * documentation and/or other materials provided with the distribution; 2113219Sodanrc@yahoo.com.br * neither the name of the copyright holders nor the names of its 2213219Sodanrc@yahoo.com.br * contributors may be used to endorse or promote products derived from 2313219Sodanrc@yahoo.com.br * this software without specific prior written permission. 2413219Sodanrc@yahoo.com.br * 2513219Sodanrc@yahoo.com.br * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2613219Sodanrc@yahoo.com.br * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2713219Sodanrc@yahoo.com.br * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2813219Sodanrc@yahoo.com.br * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2913219Sodanrc@yahoo.com.br * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3013219Sodanrc@yahoo.com.br * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3113219Sodanrc@yahoo.com.br * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3213219Sodanrc@yahoo.com.br * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3313219Sodanrc@yahoo.com.br * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3413219Sodanrc@yahoo.com.br * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3513219Sodanrc@yahoo.com.br * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3613219Sodanrc@yahoo.com.br * 3713219Sodanrc@yahoo.com.br * Authors: David Guillen Fandos 3813219Sodanrc@yahoo.com.br */ 3913219Sodanrc@yahoo.com.br 4013219Sodanrc@yahoo.com.br#include "sim/power/mathexpr_powermodel.hh" 4113219Sodanrc@yahoo.com.br 4213219Sodanrc@yahoo.com.br#include <string> 4313219Sodanrc@yahoo.com.br 4413219Sodanrc@yahoo.com.br#include "base/statistics.hh" 4513219Sodanrc@yahoo.com.br#include "params/MathExprPowerModel.hh" 4613219Sodanrc@yahoo.com.br#include "sim/mathexpr.hh" 4713219Sodanrc@yahoo.com.br#include "sim/power/thermal_model.hh" 4813219Sodanrc@yahoo.com.br#include "sim/sim_object.hh" 4913219Sodanrc@yahoo.com.br 5013219Sodanrc@yahoo.com.brMathExprPowerModel::MathExprPowerModel(const Params *p) 5113219Sodanrc@yahoo.com.br : PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st), failed(false) 5213219Sodanrc@yahoo.com.br{ 5313219Sodanrc@yahoo.com.br // Calculate the name of the object we belong to 5413219Sodanrc@yahoo.com.br std::vector<std::string> path; 5513219Sodanrc@yahoo.com.br tokenize(path, name(), '.', true); 5613219Sodanrc@yahoo.com.br // It's something like xyz.power_model.pm2 5713219Sodanrc@yahoo.com.br assert(path.size() > 2); 5813219Sodanrc@yahoo.com.br for (unsigned i = 0; i < path.size() - 2; i++) 5913219Sodanrc@yahoo.com.br basename += path[i] + "."; 6013219Sodanrc@yahoo.com.br} 6113219Sodanrc@yahoo.com.br 6213219Sodanrc@yahoo.com.brvoid 6313219Sodanrc@yahoo.com.brMathExprPowerModel::startup() 6413219Sodanrc@yahoo.com.br{ 6513219Sodanrc@yahoo.com.br // Create a map with stats and pointers for quick access 6613219Sodanrc@yahoo.com.br // Has to be done here, since we need access to the statsList 6713219Sodanrc@yahoo.com.br for (auto & i: Stats::statsList()) { 6813219Sodanrc@yahoo.com.br if (i->name.find(basename) == 0) { 6913219Sodanrc@yahoo.com.br // Add stats for this sim object and its child objects 7013219Sodanrc@yahoo.com.br stats_map[i->name.substr(basename.size())] = i; 7113219Sodanrc@yahoo.com.br } else if (i->name.find(".") == std::string::npos) { 7213219Sodanrc@yahoo.com.br // Add global stats (sim_seconds, for example) 7313219Sodanrc@yahoo.com.br stats_map[i->name] = i; 7413219Sodanrc@yahoo.com.br } 7513219Sodanrc@yahoo.com.br } 7613219Sodanrc@yahoo.com.br 7713219Sodanrc@yahoo.com.br tryEval(st_expr); 7813219Sodanrc@yahoo.com.br const bool st_failed = failed; 7913219Sodanrc@yahoo.com.br 8013219Sodanrc@yahoo.com.br tryEval(dyn_expr); 8113219Sodanrc@yahoo.com.br const bool dyn_failed = failed; 8213219Sodanrc@yahoo.com.br 8313219Sodanrc@yahoo.com.br if (st_failed || dyn_failed) { 8413219Sodanrc@yahoo.com.br const auto *p = dynamic_cast<const Params *>(params()); 8513219Sodanrc@yahoo.com.br assert(p); 8613219Sodanrc@yahoo.com.br 8713219Sodanrc@yahoo.com.br fatal("Failed to evaluate power expressions:\n%s%s%s\n", 8813219Sodanrc@yahoo.com.br st_failed ? p->st : "", 8913219Sodanrc@yahoo.com.br st_failed && dyn_failed ? "\n" : "", 9013219Sodanrc@yahoo.com.br dyn_failed ? p->dyn : ""); 9113219Sodanrc@yahoo.com.br } 9213219Sodanrc@yahoo.com.br} 9313219Sodanrc@yahoo.com.br 9413219Sodanrc@yahoo.com.brdouble 9513219Sodanrc@yahoo.com.brMathExprPowerModel::eval(const MathExpr &expr) const 9613219Sodanrc@yahoo.com.br{ 9713219Sodanrc@yahoo.com.br const double value = tryEval(expr); 9813219Sodanrc@yahoo.com.br 9913219Sodanrc@yahoo.com.br // This shouldn't happen unless something went wrong the equations 10013219Sodanrc@yahoo.com.br // were verified in startup(). 10113219Sodanrc@yahoo.com.br panic_if(failed, "Failed to evaluate power expression '%s'\n", 10213219Sodanrc@yahoo.com.br expr.toStr()); 103 104 return value; 105} 106 107double 108MathExprPowerModel::tryEval(const MathExpr &expr) const 109{ 110 failed = false; 111 const double value = expr.eval( 112 std::bind(&MathExprPowerModel::getStatValue, 113 this, std::placeholders::_1) 114 ); 115 116 return value; 117} 118 119 120double 121MathExprPowerModel::getStatValue(const std::string &name) const 122{ 123 using namespace Stats; 124 125 // Automatic variables: 126 if (name == "temp") { 127 return _temp; 128 } else if (name == "voltage") { 129 return clocked_object->voltage(); 130 } else if (name=="clock_period") { 131 return clocked_object->clockPeriod(); 132 } 133 134 // Try to cast the stat, only these are supported right now 135 const auto it = stats_map.find(name); 136 if (it == stats_map.cend()) { 137 warn("Failed to find stat '%s'\n", name); 138 failed = true; 139 return 0; 140 } 141 142 const Info *info = it->second; 143 144 auto si = dynamic_cast<const ScalarInfo *>(info); 145 if (si) 146 return si->value(); 147 auto fi = dynamic_cast<const FormulaInfo *>(info); 148 if (fi) 149 return fi->total(); 150 151 panic("Unknown stat type!\n"); 152} 153 154void 155MathExprPowerModel::regStats() 156{ 157 PowerModelState::regStats(); 158} 159 160MathExprPowerModel* 161MathExprPowerModelParams::create() 162{ 163 return new MathExprPowerModel(this); 164} 165