:: Ord a => [a] -> [a] -package:statistics -package:errors -is:exact -is:exact -package:containers -package:hedgehog -package:basement is:exact -package:safe package:lifted-base

Generalized version of runInBoundThread.
Generalized version of runInUnboundThread.
Generalized version of mask_.
Generalized version of uninterruptibleMask_.