【新增】设备信息获取接口

src/util/Singleton.h

@@ -0,0 +1,19 @@
+#ifndef SINGLETON_H
+#define SINGLETON_H
+
+template <typename T>
+class Singleton {
+public:
+    static T& GetInstance() {
+        static T instance;
+        return instance;
+    }
+    Singleton(const Singleton&) = delete;
+    Singleton& operator=(const Singleton&) = delete;
+
+protected:
+    Singleton() {}
+    ~Singleton() {}
+};
+
+#endif