somebody's/something's days are numbered(人)来日无多;生存时日屈指可数;死期不远,行将就木;(物)即将毁坏:if someone's or something's days are numbered, they will not exist for much longer
My days are numbered, but I hope I can live long enough to see my grandchild.
As our local cinema struggles to survive, it seems clear that its days are numbered.