hGetBuf (or something related) broken for 6.2 with sockets

[Tomasz Zielonka]

On Fri, Dec 19, 2003 at 10:26:02AM -0000, Simon Marlow wrote:
>  
> > On Thu, Dec 18, 2003 at 09:53:50PM +0100, Tomasz Zielonka wrote:
> > > On Thu, Dec 18, 2003 at 07:44:58PM +0100, George Russell wrote:
> > > 
> > > It seems to work when I change hGetBuf to 
> > hGetBufNonBlocking. The name
> > > is a bit misleading - the action _does_ wait for some data, 
> > but it doesn't
> > > wait for all requested bytes.
> > 
> > I've made a mistake here.
> > 
> > hGetBuf waits for filling the whole Handle's reading buffer 
> > (or reaching
> > EOF), even if the buffer contains enough data to satisfy the request.
> 
> I'm a bit lost.  Do things work as you expect, or not?

Well, I think that it would be better if hGetBuf didn't block if all
requested data was already in buffer, but I don't insist on it. However
this change of semantics can brake existing programs.

In my programs I rather use Data.Array.IO.hGetArray.

I was only trying to help George. I am sorry if I only made things more
complicated :)

> Cheers,
> 	Simon

Best regards,
Tom

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