Simon Marlow wrote:
>
> > Do we still have atomicModifyIORef?
> >
> > I don't know that there's that much point now that Haskell finalizers
> > are gone. I don't have a strong objection (esp. since it seems every
> > implementation now has it) but it doesn't seem so necessary now.
>
> It ought to be significantly faster than using MVars if you can get away
> with it. I haven't measured it though.
I bet it's a great deal faster than MVars on GHC if you also have to
take asynchronous exceptions into account.
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