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From: 048321887-0001 AT t-online DOT de (Udo Kuhnt)
Newsgroups: comp.os.msdos.djgpp
Subject: Using DR-DOS fork in DJGPP
Date: 18 May 2004 17:53:02 -0700
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To: djgpp AT delorie DOT com
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Hi,

I am running DJGPP in DR-DOS and wondered if it might be possible to use the
DR-DOS multitasking API in DJGPP programs. Since the implementation of fork()
in the C lib itself seems to be just a dummy and will not create a new task
even if the underlying DOS supports it, I thought that one could perhaps
call the DR-DOS dom_fork system call directly, as it apparently does more or
less the things that are being expected from the POSIX fork() function.

(See http://www.drdos.com/dosdoc/multtask/index.htm for reference.)

However, I do not know how this function would have to be called from a
DJGPP program, as I am not familiar with calling DOS functions in protected
mode. Also, since this functionality is normally part of the C lib on other
platforms, I do not know whether calling this system call directly would
interfere with functions in the library or cause any other problems.
I would be glad if someone could comment on this and provide some additional
info.

Udo