Method open_cursor

src/models/buffered_io.rs:169–174

(&self)

    }

    pub fn open_cursor(&self) -> Result<u64, BufIoError> {
        let cursor_id = self.next_cursor_id.fetch_add(1, Ordering::SeqCst);
        let mut cursors = self.cursors.write().map_err(|_| BufIoError::Locking)?;
        cursors.insert(cursor_id, Cursor::new());
        Ok(cursor_id)
    }

    // @DOUBT: The caller will need to remember to call close_cursor,
    // other wise the cursors will keep accumulating. One way to