fprintf(fp, "%d %d\n", (int)received_time.tv_sec, warning_count);
fprintf(fp, "-received_time_usec .%06d\n", (int)received_time.tv_usec);
fprintf(fp, "%d %d\n", (int)received_time.tv_sec, warning_count);
fprintf(fp, "-received_time_usec .%06d\n", (int)received_time.tv_usec);