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Ubuntu temperature and cpu frequency
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| Original file line number | Diff line number | Diff line change |
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| // Copyright (c) 2022 Robin Davies | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy of | ||
| // this software and associated documentation files (the "Software"), to deal in | ||
| // the Software without restriction, including without limitation the rights to | ||
| // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | ||
| // the Software, and to permit persons to whom the Software is furnished to do so, | ||
| // subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
| // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
| // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
| // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
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| #include "CpuTemperatureMonitor.hpp" | ||
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| #include <iostream> | ||
| #include <filesystem> | ||
| #include <fstream> | ||
| #include <string> | ||
| #include <string_view> | ||
| #include <optional> | ||
| #include <system_error> | ||
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| namespace fs = std::filesystem; | ||
| using namespace pipedal; | ||
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| static constexpr std::string_view THERMAL_PATH = "/sys/class/thermal/"; | ||
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| static std::optional<std::string> readFile(const fs::path& path) { | ||
| std::ifstream file(path); | ||
| if (!file) { | ||
| return std::nullopt; | ||
| } | ||
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| std::string content; | ||
| std::getline(file, content); | ||
| return content; | ||
| } | ||
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| static bool isCpuThermal(const fs::path &zone_path) { | ||
| auto type = readFile(zone_path / "type"); | ||
| return type && (*type == "cpu-thermal") || (*type == "x86_pkg_temp"); | ||
| } | ||
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| class CpuTemperatureMonitorImpl: public CpuTemperatureMonitor { | ||
| private: | ||
| std::vector<fs::path> cpuZones; | ||
| public: | ||
| explicit CpuTemperatureMonitorImpl(std::vector<fs::path>&&cpuZones) | ||
| : cpuZones(std::move(cpuZones)) { | ||
| } | ||
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| virtual float GetTemperatureC() override { | ||
| float result = INVALID_TEMPERATURE*1000; | ||
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| for (const auto&cpuZone: cpuZones) | ||
| { | ||
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| std::ifstream file(cpuZone / "temp"); | ||
| if (file) { | ||
| float v; | ||
| file >> v; | ||
| if (file) | ||
| { | ||
| if (v > result) | ||
| { | ||
| result = v; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return result/1000; | ||
| } | ||
| }; | ||
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| static std::vector<fs::path> findCpuThermalZones() { | ||
| std::vector<fs::path> cpu_zones; | ||
| std::error_code ec; | ||
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| for (const auto& entry : fs::directory_iterator(THERMAL_PATH, ec)) { | ||
| if (ec) { | ||
| std::cerr << "Error reading directory: " << ec.message() << '\n'; | ||
| continue; | ||
| } | ||
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| const auto& path = entry.path(); | ||
| if (path.filename().string().find("thermal_zone") == 0) { | ||
| if (isCpuThermal(path)) { | ||
| cpu_zones.push_back(path); | ||
| } | ||
| } | ||
| } | ||
| return cpu_zones; | ||
| } | ||
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| CpuTemperatureMonitor::ptr CpuTemperatureMonitor::Get() | ||
| { | ||
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| std::vector<fs::path> cpuZones = findCpuThermalZones(); | ||
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| return std::make_unique<CpuTemperatureMonitorImpl>(std::move(cpuZones)); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| // Copyright (c) 2024 Robin Davies | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy of | ||
| // this software and associated documentation files (the "Software"), to deal in | ||
| // the Software without restriction, including without limitation the rights to | ||
| // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | ||
| // the Software, and to permit persons to whom the Software is furnished to do so, | ||
| // subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
| // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
| // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
| // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| #pragma once | ||
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| #include <filesystem> | ||
| #include <cstdint> | ||
| #include <memory> | ||
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| namespace pipedal { | ||
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| class CpuTemperatureMonitor { | ||
| protected: | ||
| CpuTemperatureMonitor() { } | ||
| public: | ||
| virtual ~CpuTemperatureMonitor() {}; | ||
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| static constexpr float INVALID_TEMPERATURE = -400; | ||
| using ptr = std::unique_ptr<CpuTemperatureMonitor>; | ||
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| static ptr Get(); // may return empty pointer. | ||
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| // degrees Celcius * 1000; | ||
| virtual float GetTemperatureC() = 0; | ||
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| }; | ||
| } |