On Mon, Oct 29, 2001 at 02:08:23PM -0000, Simon Marlow wrote:
> This appears to be because the dummy Handle opened in WriteMode is being
> garbage collected and closed, which leaves the FIFO with no writers so
> you get EOF. 5.02 is behaving correctly here. You can add an extra
> 'hClose dummy' at the end of 'main' to prevent the EOF exception.
Argh, that was exactly what I feared when I read the file-handles
discussion on the list. Only I didn't realize that the feature
got indeed introduced into ghc-5.02.
> You have some extra blocking in there: just comment out the first two
> lines of fifoReadLoop, and everything should be fine. This also fixes
> the other problem you mentioned above ("varying numbers of last").
The blocking is essential since I need to be able to use MVars
between the threadWaitRead & the hGetLine (remember the note I
sent about fork()ing).
--
Volker Stolz * [EMAIL PROTECTED] * PGP + S/MIME
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