mirror of
https://github.com/dingusdev/dingusppc.git
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50018010c7
Keeps track of instructions (including operands) that are executed, to see if there are any hotspots that could be optimized or fastpaths that should be added. Also adds a mode where CPU profiler data is periodically output, to make it easier to get at these instruction counts during startup.
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-21 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "profiler.h"
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#include <iomanip>
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#include <iostream>
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#include <vector>
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/** global profiler object */
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std::unique_ptr<Profiler> gProfilerObj = 0;
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Profiler::Profiler()
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{
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this->profiles_map.clear();
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}
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bool Profiler::register_profile(std::string name,
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std::unique_ptr<BaseProfile> profile_obj)
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{
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// bail out if a profile corresponding to 'name' already exists
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if (this->profiles_map.find(name) != this->profiles_map.end()) {
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return false;
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}
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this->profiles_map[name] = std::move(profile_obj);
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return true;
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}
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void Profiler::print_profile(std::string name)
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{
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if (this->profiles_map.find(name) == this->profiles_map.end()) {
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std::cout << "Profile " << name << " not found." << std::endl;
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return;
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}
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// Set a locale so we get thousands separators when outputting numbers.
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// Would be nice if we could use the default locale, but that does not
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// appear to work.
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std::cout.imbue(std::locale("en_US.UTF-8"));
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std::cout << std::endl;
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std::cout << "Summary of the profile '" << name << "':" << std::endl;
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std::cout << "------------------------------------------" << std::endl;
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auto prof_it = this->profiles_map.find(name);
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std::vector<ProfileVar> vars;
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// ask the corresponding profile class to fill its variables for us
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prof_it->second->populate_variables(vars);
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int name_width = 10;
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for (auto& var : vars) {
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name_width = std::max(name_width, int(var.name.length()));
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}
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for (auto& var : vars) {
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std::cout << std::left << std::setw(name_width) << var.name << " : ";
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switch(var.format) {
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case ProfileVarFmt::DEC:
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std::cout << var.value << std::endl;
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break;
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case ProfileVarFmt::HEX:
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std::cout << std::hex << var.value << std::endl;
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break;
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case ProfileVarFmt::COUNT:
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std::cout << var.value << std::fixed << std::setprecision(2) << " ("
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<< (double(var.value) / double(var.count_total) * 100)
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<< "%)" << std::endl;
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break;
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default:
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std::cout << "Unknown value in variable " << var.name << std::endl;
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}
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}
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std::cout << std::endl;
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}
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void Profiler::reset_profile(std::string name)
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{
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if (this->profiles_map.find(name) == this->profiles_map.end()) {
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std::cout << "Profile " << name << " not found." << std::endl;
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return;
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}
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this->profiles_map.find(name)->second->reset();
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}
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