:: Ord a => [a] -> [a] -package:focus -package:witherable -package:ghc -package:statistics -package:integration is:exact -package:imports -package:errors -package:basement package:lifted-base

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