Re: [Haskell-cafe] STM, orElse and timed read from a channel

Simon, How is this easier than just calling threadDelay? Ideally, I would be looking for something like reading from a TVar with a timeout. So that you either get a Nothing (timeout) or the value from the TVar. Can I implement it using the GHC timeout thread? Thanks, Joel On Nov 29, 2005, at 9:20 AM, Simon Marlow wrote:

Interestingly, GHC already has a timeout thread - the I/O manager thread handles threadDelay too. It wouldn't be too hard to adapt it to do STM timeouts too, with a function like

registerTimeout :: Int -> STM (TVar Bool)

and you wait for your timeout by waiting for the TVar to contain True.

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