:: Ord a => [a] -> [a] -package:witherable -package:extra -package:ghc is:exact -package:imports -package:mono-traversable -package:containers -package:safe package:lifted-base

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