#include #include #include #include #include class LogWriter { public: static int log_start_line(); static int log_counter(long long int counter); static int log_copy_start(std::string copy_name); static int log_copy_finish(std::string copy_name); static int log_copy_error(std::string copy_name); protected: static std::string get_current_time(); private: static int write_log(const std::string& log_line); };