Executing a function with a timeout

What would be an idiomatic way of executing a function within a time limit? Something like,

(with-timeout 5000
 (do-somthing))

Unless do-something returns within 5000 throw an exception or return nil.

EDIT: before someone points it out there is,

clojure (with-timeout ... macro)

but with that the future keeps executing that does not work in my case.