Ubuntu temperature and cpu frequency

src/CpuTemperatureMonitor.hpp

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+// 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
+
+
+#include <filesystem>
+#include <cstdint>
+#include <memory>
+
+namespace pipedal {
+
+    class CpuTemperatureMonitor {
+    protected: 
+        CpuTemperatureMonitor() { }
+    public:
+        virtual ~CpuTemperatureMonitor() {};
+
+        static constexpr float INVALID_TEMPERATURE = -400;
+        using ptr = std::unique_ptr<CpuTemperatureMonitor>;
+
+        static ptr Get(); // may return empty pointer.
+
+        // degrees Celcius * 1000;
+        virtual float GetTemperatureC() = 0;
+    
+    };
+}