Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!bagate!cbmvax!jesup
From: jesup@cbmvax.commodore.com (Randell Jesup)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: usage of CreateProcess() ??
Message-ID: <21536@cbmvax.commodore.com>
Date: 14 May 91 05:58:56 GMT
References: <11388@uwm.edu> <1991Apr25.144702.30033@kuhub.cc.ukans.edu>
Reply-To: jesup@cbmvax.commodore.com (Randell Jesup)
Organization: Commodore, West Chester, PA
Lines: 42

In article <1991Apr25.144702.30033@kuhub.cc.ukans.edu> markv@kuhub.cc.ukans.edu writes:
>In most cases, a child can even use a Lib base given to it by its
>parent, except things like the mathieeexxxx libraries, which keep
>track of information on a task by task basis.

	Not a good habit to get into, though, in case a library starts having
per-task data, or if you run across a new library with per-task data.

>string (not a BPTR to a BSTR), and Priority is the priority (-127 to +127)
							      ^^^^
							      -128
>or, if you want to use your own code in memory, you need to dummy a
>seglist like this:
>
>SegBase:
>	DS.L	0
>	DC.L	16
>	DC.L	0
>CodeStart:
>	#Code starts here.

	That should be:

    DC.L    16	; value doesn't really matter - make it 16 anyways
SegBase:	; NOTE: points to pointer to next segment, not size!
    DC.L    0	; should be 0 - BPTR to next segment
* code starts here - often a jump to real routine.

>And then convert SegBase to a BPTR ie:
>
>	Foo = CreateProc("MyProc", 0L, BADDR(SegBase), 4096L); 
				       ^^^^^^^^^^^^^^
	That's (((LONG) SegBase) >> 2), not BADDR(...).  BADDR goes the
other direction (BPTR to CPTR).

-- 
Randell Jesup, Keeper of AmigaDos, Commodore Engineering.
{uunet|rutgers}!cbmvax!jesup, jesup@cbmvax.commodore.com  BIX: rjesup  
Disclaimer: Nothing I say is anything other than my personal opinion.
Thus spake the Master Ninjei: "To program a million-line operating system
is easy, to change a man's temperament is more difficult."
(From "The Zen of Programming")  ;-)