:: Ord a => [a] -> [a] -package:statistics -package:witherable -package:ghc -is:exact is:exact -package:lens -package:extra -package:hxt -package:vector package:lifted-base

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