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Date: Mon, 26 Aug 2002 16:29:21 +0200
From: Corinna Vinschen <vinschen AT redhat DOT com>
To: cygwin-developers AT cygwin DOT com
Subject: Re: readv/writev
Message-ID: <20020826162921.M5475@cygbert.vinschen.de>
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On Mon, Aug 26, 2002 at 03:20:00PM +0100, Conrad Scott wrote:
> "Christopher Faylor" <cgf AT redhat DOT com> wrote:
> > There shouldn't really be that much overhead to the current
> method for
> > handling text/binary reads, though.  It's just checking a bit
> field.
> 
> At the coal-face it ends up being a bit more messy than that.  For
> example, the fhandler::read code checks the readahead buffers for
> pending data but they will always be empty in binary-mode (AFAIK)
> . In fact there's a page of code before the check for whether a
> binary read is being done and only then does the code escape back
> to the caller.  Since (AFAIK) you can't change the text/binary
> mode of an fd once it's been opened (and thus the readahead

You can.  setmode(fd, O_TEXT); or setmode(fd, O_BINARY);

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.