144         if (start_idx.first && start_idx.second == UINT64_MAX) {  in DoExecute()
146             start_idx.second = history.GetSize() - count.second;  in DoExecute()
147             stop_idx.second = history.GetSize() - 1;  in DoExecute()
149             start_idx.second = stop_idx.second;  in DoExecute()
150             stop_idx.second = history.GetSize() - 1;  in DoExecute()
152             start_idx.second = 0;  in DoExecute()
153             stop_idx.second = history.GetSize() - 1;  in DoExecute()
157             start_idx.second = 0;  in DoExecute()
158             stop_idx.second = history.GetSize() - 1;  in DoExecute()
161               stop_idx.second = start_idx.second + count.second - 1;  in DoExecute()
163               stop_idx.second = history.GetSize() - 1;  in DoExecute()
167               if (stop_idx.second >= count.second)  in DoExecute()
168                 start_idx.second = stop_idx.second - count.second + 1;  in DoExecute()
170                 start_idx.second = 0;  in DoExecute()
174             start_idx.second = 0;  in DoExecute()
175             stop_idx.second = count.second - 1;  in DoExecute()
178         history.Dump(result.GetOutputStream(), start_idx.second,  in DoExecute()
179                      stop_idx.second);  in DoExecute()