signal_data* signal_from_name(const std::string& name);
void update_signal_sample(signal_data* sig_data, uint32_t segment_id, uint64_t sample_num);
signal_data* signal_from_name(const std::string& name);
void update_signal_sample(signal_data* sig_data, uint32_t segment_id, uint64_t sample_num);