[Haskell-cafe] concurrency vs. I/O in GHC

[John Lato]

On Fri, Oct 22, 2010 at 6:16 PM, Bulat Ziganshin
<bulat.ziganshin at gmail.com>wrote:

> Hello John,
>
> Monday, October 18, 2010, 8:15:42 PM, you wrote:
>
> > If anyone is listening, I would very much like for there to be a
> > mechanism by which external functions can be called "unsafe"-ly, but
> > without blocking all other Haskell threads.  I have code that does this:
>
> +RTS -N2
>

This doesn't work, which was why the OP asked in the first place.  When a
thread calls an unsafe foreign function, it blocks everything until that
function returns.
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