:: Ord a => [a] -> [a] -package:witherable -package:basement -package:statistics -package:Cabal -package:extra -package:Cabal-syntax -package:hxt is:exact package:lifted-base

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