# File lib/innodb/page/trx_sys.rb, line 110
  def doublewrite_info(cursor)
    cursor.peek(pos_doublewrite_info) do |c_doublewrite|
      c_doublewrite.name("doublewrite") do |c|
        {
          :fseg => c.name("fseg") { Innodb::FsegEntry.get_inode(@space, c) },
          :page_info => [
            c.name("group[0]") { doublewrite_page_info(c) },
            c.name("group[1]") { doublewrite_page_info(c) },
          ],
          :space_id_stored =>
            (c.name("space_id_stored") { c.get_uint32 } ==
               DOUBLEWRITE_SPACE_ID_STORED_MAGIC_N),
        }
      end
    end
  end