:: Ord a => [a] -> [a] -package:focus -is:exact is:exact -package:imports -package:statistics -package:hedgehog -package:ghc -package:safe -package:base package:lifted-base

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