Re: Why ms-dos is non reentrant

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#1189

From: Kenneth Falck
Date: Tue, 01 Sep 1992 16:01

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In article <bws.35@ccs.carleton.ca> bws@ccs.carleton.ca (Brian Sullivan) writes:
>When performing a DOS call, some routines use Static data space, (rather than
>allocating memory on a stack). If you interrupt a DOS call to perform the 
>same function(or on fro the same family, (even if you save all the 
>registers) you can still trash the original data. And after your TSR exits
>DOS continues with corrupted data. 

So, the question remains, why don't the Microsoft programmers bang
their brains together and rewrite MSDOS to be fully re-entrant and
all the routines to use dynamic memory allocation instead of static?

If this really is so difficult for them, I must have understood
something wrong about this.

-- 
kennu@mits.mdata.fi

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Message-ID: <1992Sep1.160133.19060@mits.mdata.fi>

Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!fuug!mits!kennu

References: <92245.122042A10742@TRMETU.BITNET> <bws.35@ccs.carleton.ca>

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Newsgroups: comp.os.msdos.programmer,comp.os.msdos.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!fuug!mits!kennu
From: kennu@mits.mdata.fi (Kenneth Falck)
Subject: Re: Why ms-dos is non reentrant
Message-ID: <1992Sep1.160133.19060@mits.mdata.fi>
Organization: Microdata Oy, Helsinki, Finland
References: <92245.122042A10742@TRMETU.BITNET> <bws.35@ccs.carleton.ca>
Date: Tue, 1 Sep 1992 16:01:33 GMT
Lines: 17

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