#9321: Support for waiting on multiple MVars -------------------------------------+------------------------------------- Reporter: schyler | Owner: simonmar Type: feature | Status: new request | Milestone: Priority: normal | Version: 7.8.3 Component: Runtime | Keywords: mvar System | Operating System: Unknown/Multiple Resolution: | Type of failure: None/Unknown Differential Revisions: | Test Case: Architecture: | Blocking: Unknown/Multiple | Difficulty: Unknown | Blocked By: | Related Tickets: | -------------------------------------+------------------------------------- Comment (by carter): likewise, it seems like the async package provides a version of this https://hackage.haskell.org/package/async-2.0.1.5/docs/Control-Concurrent- Async.html#g:6 waitEither :: Async a -> Async b -> IO (Either a b) among others. do you have a specific test case where the mvar or async approaches are too slow? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9321#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler