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Re: Optimizing away "ReadFile" calls when Make calls stat()
----- Original Message -----
From: "Egor Duda" <deo@logos-m.ru>
To: <cygwin@cygwin.com>
Sent: Wednesday, February 14, 2001 7:08 PM
Subject: Re: Optimizing away "ReadFile" calls when Make calls stat()
> Hi!
<SNIP>
> not meaning to be too pushy ;), but i'd like to bring the thread
>
> http://sources.redhat.com/ml/cygwin-developers/2000-03/msg00077.html
>
> back to life. I have to say, that not only ReadFile() is slowing things
> up, but CreateFile() too. i tend to think that cygwin- (or win32-)
> specific parts in ported applications are unavoidable evil (and
> "make" sources are already full of them).
>
<snip>
> giving porter a single universal tool to be more specific about what
> he wants to get from stat() has one more benefit. otherwise, porter
> will tend to use different native win32 calls such as GetFileTime(),
> GetFileAttributes(), GetFileSize() etc. which are harder to find in
> large source tree when needed. with stat_lite he had just to do the
> simple grep.
>
> the only problem with this approach i can see is that if we introduce
> new API and applications start to use it we became "bound" to it and
> it'll be not too easy to deprecate ad remove it afterwards. OTOH, we
> can always make stat_lite() a simple wrapper to stat() if the latter
> become fast enough.
>
Perhaps a macro for each hint, that porters who have read up on cygwin can use? Rather than change the cygwin API, have a macro that
calls GetFileTime() etc as appropriate... that way cygwin itself is not altered or tied to anything ?
Rob
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