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Message-ID: <005d01c0965e$b858bf50$0200a8c0@lifelesswks>
From: "Robert Collins" <robert.collins@itdomain.com.au>
To: <cygwin@cygwin.com>
References: <4.3.1.2.20010213134821.019a7130@pop.ma.ultranet.com> <20010213190131.14369.qmail@lizard.curl.com> <200102131935.OAA09136@envy.delorie.com> <20010213194612.17311.qmail@lizard.curl.com> <200102131954.OAA09284@envy.delorie.com> <20010213152313.A12830@redhat.com> <39319402546.20010214110838@logos-m.ru>
Subject: Re: Optimizing away "ReadFile" calls when Make calls stat()
Date: Wed, 14 Feb 2001 19:18:25 +1100
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----- 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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