bookmark-time-to-save-p

bookmark-time-to-save-p is a compiled Lisp function in `bookmark.el'.

(bookmark-time-to-save-p &optional FINAL-TIME)

Return t if it is time to save bookmarks to disk, nil otherwise.
Optional argument FINAL-TIME means this is being called when Emacs
is being killed, so save even if `bookmark-save-flag' is a number and
is greater than `bookmark-alist-modification-count'.