ostream = NULL;
f_path = "";
- log_info("[%s] writing %d data values to save.\n", device_id.c_str(), data_list->size());
+ log_info("[%s] writing %lu data values to save.\n", device_id.c_str(), data_list->size());
// TODO: add mutex to protect string_list while it's read and emptied
for(iter = data_list->begin(); iter != data_list->end(); iter++) {
data = (Data *)*iter;