diff --git a/mainloop.hpp b/mainloop.hpp
index d3a5f96..4bc08c4 100644
--- a/mainloop.hpp
+++ b/mainloop.hpp
@@ -1,3 +1,39 @@
 #pragma once
 
-int serverMain(const char* path);
+#include <string>
+
+/** @class MainLoop
+ *  @brief hwmon-readd main application loop.
+ */
+class MainLoop
+{
+    public:
+        MainLoop() = delete;
+        MainLoop(const MainLoop&) = delete;
+        MainLoop& operator=(const MainLoop&) = delete;
+        MainLoop(MainLoop&&) = default;
+        MainLoop& operator=(MainLoop&&) = default;
+        ~MainLoop() = default;
+
+        /** @brief Constructor
+         *
+         *  @param[in] path - hwmon sysfs instance to manage
+         */
+        explicit MainLoop(const std::string& path);
+
+        /** @brief Start polling loop and process dbus traffic. */
+        void run();
+
+        /** @brief Stop loop from another thread.
+         *
+         *  Typically only used by testcases.
+         */
+        void shutdown() noexcept;
+
+    private:
+
+        /** @brief Shutdown requested. */
+        volatile bool _shutdown;
+        /** @brief Path to hwmon sysfs instance. */
+        std::string _path;
+};