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<H1>[MUD-Dev] Re: atomic functions</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
<LI><em>Subject</em>: [MUD-Dev] Re: atomic functions</LI>
<LI><em>From</em>: "Felix A. Croes" <<A HREF="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</A>></LI>
<LI><em>Date</em>: Sun, 3 May 1998 19:43:41 +0200 (MET DST)</LI>
<LI><em>Reply-To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
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<PRE>
Jon A. Lambert <jlsysinc#ix,netcom.com> wrote:
> On 3 May 98 at 1:23, Felix A. Croes wrote:
> > Jon A. Lambert <jlsysinc#ix,netcom.com> wrote:
>[...]
> > > Thus an Event may be made up of many methods/functions, all of which must
> > > succeed for the event to commit. Methods may schedule additional Events
> > > and these events will be scheduled regardless of whether the generating
> > > Event succeeds or not. So in many cases, Event calls will be obviously
> > > be placed just before the successful return of the top-most method.
> > > There is a caveat. A method/function which is called as an event
> > > should ensure that it checks the state of the caller/callee for state
> > > validity. Nothing comes for free. I have just shuffled the complexity
> > > into another area of program design. I have a theory this might be
> > > unavoidable. :(
> >
> > Hmm. That is one thing I mean to do differently: if the current
> > event fails to commit, then any events generated by it are unscheduled.
>
> Currently I have no way to do this.
In your system, isn't it also necessary to check the state of successor
events? For example: event A schedules event B, and then fails. Event
B is started and succeeds. Event A is restarted, schedules event B
again, and succeeds. Event B is started and succeeds. Now event A has
completed once, but successor event B has completed twice, even though
B can only be scheduled by A.
Also, doesn't this imply that when A schedules B, it cannot pass along
data to B? After all, that data has been prepared by an event that may
turn out not to have existed.
This looks like a very chaotic system to me. What are the advantages
that make you prefer it?
Felix Croes
--
MUD-Dev: Advancing an unrealised future.
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<li><strong><A NAME="00443" HREF="msg00443.html">[MUD-Dev] Re: atomic functions</A></strong>
<ul compact><li><em>From:</em> J C Lawrence <claw#under,engr.sgi.com></li></ul>
<li><strong><A NAME="00345" HREF="msg00345.html">[MUD-Dev] Re: atomic functions</A></strong>
<ul compact><li><em>From:</em> "Jon A. Lambert" <jlsysinc#ix,netcom.com></li></ul>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>[MUD-Dev] Re: atomic functions</STRONG>, <EM>(continued)</EM>
<ul compact>
<ul compact>
<ul compact>
<ul compact>
<LI><strong><A NAME="00411" HREF="msg00411.html">[MUD-Dev] Re: atomic functions</A></strong>,
Adam Wiggins <a href="mailto:adam#angel,com">adam#angel,com</a>, Tue 05 May 1998, 19:33 GMT
</LI>
<LI><strong><A NAME="00457" HREF="msg00457.html">[MUD-Dev] Re: atomic functions</A></strong>,
Shawn Halpenny <a href="mailto:malachai#iname,com">malachai#iname,com</a>, Thu 07 May 1998, 14:09 GMT
<UL>
<LI><strong><A NAME="00542" HREF="msg00542.html">[MUD-Dev] Re: atomic functions</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 13 May 1998, 18:23 GMT
<UL>
<LI><strong><A NAME="00560" HREF="msg00560.html">[MUD-Dev] Re: atomic functions</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Wed 13 May 1998, 22:14 GMT
</LI>
</UL>
</LI>
</UL>
</LI>
</ul>
</ul>
</ul>
<LI><strong><A NAME="00339" HREF="msg00339.html">[MUD-Dev] Re: atomic functions</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Sun 03 May 1998, 17:45 GMT
<UL>
<LI><strong><A NAME="00345" HREF="msg00345.html">[MUD-Dev] Re: atomic functions</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Sun 03 May 1998, 16:50 GMT
<UL>
<LI><strong><A NAME="00446" HREF="msg00446.html">[MUD-Dev] Re: atomic functions</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 06 May 1998, 23:03 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00443" HREF="msg00443.html">[MUD-Dev] Re: atomic functions</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 06 May 1998, 22:26 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00376" HREF="msg00376.html">[MUD-Dev] Re: atomic functions</A></strong>,
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Mon 04 May 1998, 17:25 GMT
</LI>
</ul>
</LI>
</UL></BLOCKQUOTE>
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