Path: utzoo!attcan!uunet!wuarchive!cs.utexas.edu!news-server.csri.toronto.edu!torsqnt!lethe!yunexus!rreiner
From: rreiner@yunexus.YorkU.CA (Richard Reiner)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Child processes in Mess-Dos
Message-ID: <15651@yunexus.YorkU.CA>
Date: 29 Sep 90 19:32:00 GMT
References: <1990Sep28.234836.17868@gpu.utcs.utoronto.ca> <619@demott.COM>
Organization: York U. Computing Services
Lines: 15

kdq@demott.COM (Kevin D. Quitt) writes:

>In article <1990Sep28.234836.17868@gpu.utcs.utoronto.ca> sarathy@gpu.utcs.utoronto.ca (Rajiv Sarathy) writes:
>>
>>Others were under the impression that spawn and exec load an additional
>>copy of COMMAND.COM.  I didn't test to see if this is true, but I doubt it.

>    If you doubt it, make your comspec=a:\command.com and see how slowly
>your program comes up.  I've just gone through that exercise.

I've done one better: I wrote a little program that spawned a memory
mapper as its child.  The resulting map clearly shows that there is
*no* copy of command.com loaded by spawn().

--richard