Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!romp!rancor!bob
From: bob@rancor.UUCP (Bob Willcox)
Newsgroups: comp.os.msdos.desqview
Subject: Re: Insufficient room for shared memory error??
Message-ID: <309@rancor.UUCP>
Date: 15 May 91 01:42:06 GMT
References: <308@rancor.UUCP> <91134.162236U09368@uicvm.uic.edu>
Organization: Bob's Place, Austin TX
Lines: 43

In article <91134.162236U09368@uicvm.uic.edu> U09368@uicvm.uic.edu (Andrew Deckowitz) writes:
>In article <308@rancor.UUCP>, bob@rancor.UUCP (Bob Willcox) says:
>>...
>>specifies Ralf Brown's DVKPOLL.SHR in the shared program pathname
>>...
>Please tell us more about this utility.  What does it do?  Where can we get it?
>
I got it from wuarchive.wustl.edu (./mirrors/msdos/desqview/dvkpoll.arc).

As for what it does...here is its dvkpoll.doc file:

---------------------------- cut here -----------------------------
This is a shared program which reduces the amount of CPU time used by programs
which poll the keyboard when waiting for input.  Simply add DVKPOLL.SHR to the
"Shared Program Pathname" entry on the "Change Program" advanced options
screen, and your other programs will speed up.  You will probably also want to
make sure that INT 16 is in the range of interrupts indicated on the advanced
options screen, though the nature of shared programs may make this
unnecessary.

How it works:  The shared program installs a small TSR when the window is
opened, and deinstalls the TSR when the window is closed.  This TSR intercepts
the polling call, and if no keystroke is available, gives up the rest of the
current timeslice to other programs.

DVKPOLL is hereby released to the public domain.

        Ralf Brown

        FIDO: 1:129/31
        ARPA: ralf@cs.cmu.edu
---------------------------- cut here -----------------------------

I really don't know any more about it.  It does seem to make a significant
difference in overall performance and feel of the system when using it
though.  Unfortunately, I have run into this insufficient shared memory
error which limits how many windows I can run that use it, and I have
noticed problems with two different programs when using it (Pathminder+
and ArcMaster).

-- 
Bob Willcox             ...!{rutgers|ames}!cs.utexas.edu!romp!rancor!bob
Phone: 512 258-4224