Everhart, Glenn
From:	Chtchetkine, Vladimir [VChtchetkine@Starbase.com]
Sent:	Tuesday, March 30, 1999 2:16 PM
To:	'Thomas F. Divine'
Cc:	'ntdev@atria.com'; 'ntfsd@atria.com'
Subject:	RE: [ntdev] Boosting thread priority in Win95/98
Tomas,

Thanks for the reply.

I'm perfectly aware of the ring0-ring3 issue. That's what Win16Mutex
is all about. Fortunately, it doesn't screw up my project, it just
brings
me more headaches. I'm fine with failing some FS requests if deadlock
condition may occur during request handling, because in most cases
this doesn't happen (in my case this happens only when an app started
from my virtual disk needs to load DLLs located on the same disk).
The real problem is that you can't tell if it is safe to make
ring0-ring3 call
until you make it and your system hangs. There is no way how to check
if Win16Mutex (or its lovely brother) is acquired. That's why I have all
this
mess with semaphores watched by timer objects that forces them to get
signaled if timeout has expired. And intention of my original question
was
to find a way how to minimize this timeout. Or in other words how to
minimize the time between signaling an event that blocks a thread and
the moment when thread gets actually started.

Best regards,

Vladimir.

Vladimir Chtchetkine,
StarBase Corporation [http://www.starbase.com]
mailto:vchtchetkine@starbase.com

> -----Original Message-----
> From:	Thomas F. Divine [SMTP:tdivine@pcausa.com]
> Sent:	Tuesday, March 30, 1999 10:41 AM
> To:	Chtchetkine, Vladimir; ntdev@atria.com; ntfsd@atria.com
> Subject:	Re: [ntdev] Boosting thread priority in Win95/98
> 
> Valdimir,
> 
> I believe that you have a bigger problem then boosting thread
> priority. Lots
> of folks have tried similar things, and have hit a roadblock in the
> Win95
> system handling of IFS calls.
> 
> See comments "Can I block in my FSD or redirector and call ring-3
> executables to perform functions?" in the IFS FAQ at
> <http://www.pcausa.com/resources/ifsqlist.html>.
> 
> Good luck,
> 
> Thomas F. Divine
> 
> PCAUSA - Toolkits & Resources For Network Software Developers
> NDIS Protocol - TDI Client - Windows 95 Redirector
> <http://www.pcausa.com>
> 
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[ To unsubscribe, send email to ntdev-request@atria.com with body
UNSUBSCRIBE (the subject is ignored). ]