From: sandmann AT clio DOT rice DOT edu (Charles Sandmann)
Message-Id: <10108271520.AA13293@clio.rice.edu>
Subject: Win2K/XP fixes - implementation review
To: djgpp-workers AT delorie DOT com (DJGPP developers)
Date: Mon, 27 Aug 2001 10:20:56 -0500 (CDT)
In-Reply-To:  
X-Mailer: ELM [version 2.5 PL2]
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Reply-To: djgpp-workers AT delorie DOT com

I've been thinking about all this Win2K bug workaround stuff.  Some things
that really bug me:

 1) We've now got a large number of calls to the true dos version and
    comparisons to it.  I'd like to clean these up with a global variable
    set in crt1.

 2) Today, we don't separate NT 4.0 with the LFN TSR from W2K/XP, so 
    NT 4 + LFN is forced to make a lot of extra calls which aren't required.
    We could probably detect this when opening NUL (for the FSEXT?) and
    set a flag to use instead of all the comparisons.
    
    If we did this, and if MS ever fixes W2K or XP in some service pack we
    would avoid the uneeded calls also.  But it may not be worth it - 
    this is maybe 2-3 extra interrupts for calls like _open - which are
    called infrequently enough to maybe not be measurable in performance.

Comments?  Thoughts?