<!-- MHonArc v2.4.4 --> <!--X-Subject: [MUD-Dev] Re: DevMUD: Inheritable modules --> <!--X-From-R13: Xb Rvyyba <rzvylNgurybavbhf.arj.bk.np.hx> --> <!--X-Date: Mon, 2 Nov 1998 02:14:02 -0800 --> <!--X-Message-Id: 19981102100957.A15559#thelonious,new.ox.ac.uk --> <!--X-Content-Type: text/plain --> <!--X-Reference: 19981028153702.A8875#divcom,slimy.com --> <!--X-Reference: Pine.LNX.3.96.981029183651.353A-100000@localhost --> <!--X-Reference: 19981029164016.B15596#divcom,slimy.com --> <!--X-Head-End--> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <html> <head> <title>MUD-Dev message, [MUD-Dev] Re: DevMUD: Inheritable modules</title> <!-- meta name="robots" content="noindex,nofollow" --> <link rev="made" href="mailto:emily#thelonious,new.ox.ac.uk"> </head> <body background="/backgrounds/paperback.gif" bgcolor="#ffffff" text="#000000" link="#0000FF" alink="#FF0000" vlink="#006000"> <font size="+4" color="#804040"> <strong><em>MUD-Dev<br>mailing list archive</em></strong> </font> <br> [ <a href="../">Other Periods</a> | <a href="../../">Other mailing lists</a> | <a href="/search.php3">Search</a> ] <br clear=all><hr> <!--X-Body-Begin--> <!--X-User-Header--> <!--X-User-Header-End--> <!--X-TopPNI--> Date: [ <a href="msg00680.html">Previous</a> | <a href="msg00682.html">Next</a> ] Thread: [ <a href="msg00692.html">Previous</a> | <a href="msg00608.html">Next</a> ] Index: [ <A HREF="author.html#00681">Author</A> | <A HREF="#00681">Date</A> | <A HREF="thread.html#00681">Thread</A> ] <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> <H1>[MUD-Dev] Re: DevMUD: Inheritable modules</H1> <HR> <!--X-Subject-Header-End--> <!--X-Head-of-Message--> <UL> <LI><em>To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI> <LI><em>Subject</em>: [MUD-Dev] Re: DevMUD: Inheritable modules</LI> <LI><em>From</em>: Jo Dillon <<A HREF="mailto:emily#thelonious,new.ox.ac.uk">emily#thelonious,new.ox.ac.uk</A>></LI> <LI><em>Date</em>: Mon, 2 Nov 1998 10:09:57 +0000</LI> <LI><em>Reply-To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI> </UL> <!--X-Head-of-Message-End--> <!--X-Head-Body-Sep-Begin--> <HR> <!--X-Head-Body-Sep-End--> <!--X-Body-of-Message--> <PRE> Jon Leonard (jleonard#divcom,slimy.com) spake thusly: > My current thoughts on this: > > I don't want to use C++, because it doesn't have the object model I want. I'd say C makes sense for the basic engine; I personally would probably end up writing my plugins in C++, but the plugin interface should probably be C; C has something approaching an ABI whereas C++ emphatically does not, and it would be nice if plugins compiled with different compilers on the same platform would work. > An interface should have a name, and an array of function structures > like those exported by modules, except without the function pointers. > > We should have a source verifier that checks that the claimed interface > (name-mangled version of the function, or whatever) matches the prototype > of the function pointer. > > There should be a separate collection of defined interfaces, so a module > can just say "I implement interface X" (this can be verified, of course) I personally like this idea, where an interface consists of an array of function pointers. It tends to make for efficient function calls :) It also works well for communication between languages and for RPC. I did some tests at some point (I don't have the statistics) which showed that using this approach was as fast as using virtual functions and /much/ faster than Java method calls, but about half the speed of a non-virtual function call. > This database of interfaces shouldn't be monolithic -- I don't want to have > to know about all interfaces that someone else might define. Of course, you would want to know what interfaces were defined by remote objects in a distributed mud. Perhaps it would be good to look at COM or possibly CORBA here? -- Jo Harmony - the project to create an LGPL Qt clone <A HREF="http://harmony.ruhr.de">http://harmony.ruhr.de</A> </PRE> <!--X-Body-of-Message-End--> <!--X-MsgBody-End--> <!--X-Follow-Ups--> <HR> <!--X-Follow-Ups-End--> <!--X-References--> <UL><LI><STRONG>References</STRONG>: <UL> <LI><STRONG><A NAME="00573" HREF="msg00573.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> <UL><LI><EM>From:</EM> Jon Leonard <jleonard#divcom,slimy.com></LI></UL></LI> <LI><STRONG><A NAME="00579" HREF="msg00579.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> <UL><LI><EM>From:</EM> The Arrow <arrow#trelleborg,mail.telia.com></LI></UL></LI> <LI><STRONG><A NAME="00583" HREF="msg00583.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> <UL><LI><EM>From:</EM> Jon Leonard <jleonard#divcom,slimy.com></LI></UL></LI> </UL></LI></UL> <!--X-References-End--> <!--X-BotPNI--> <UL> <LI>Prev by Date: <STRONG><A HREF="msg00680.html">[MUD-Dev] Re: Why modules? (Was: Inheritable modules)</A></STRONG> </LI> <LI>Next by Date: <STRONG><A HREF="msg00682.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> </LI> <LI>Prev by thread: <STRONG><A HREF="msg00692.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> </LI> <LI>Next by thread: <STRONG><A HREF="msg00608.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></STRONG> </LI> <LI>Index(es): <UL> <LI><A HREF="index.html#00681"><STRONG>Date</STRONG></A></LI> <LI><A HREF="thread.html#00681"><STRONG>Thread</STRONG></A></LI> </UL> </LI> </UL> <!--X-BotPNI-End--> <!--X-User-Footer--> <!--X-User-Footer-End--> <ul><li>Thread context: <BLOCKQUOTE><UL> <LI><STRONG>[MUD-Dev] Re: DevMUD: Inheritable modules</STRONG>, <EM>(continued)</EM> <ul compact> <ul compact> <ul compact> <ul compact> <ul compact> <ul compact> <ul compact> <ul compact> <ul compact> <LI><strong><A NAME="00851" HREF="msg00851.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, James Wilson <a href="mailto:jwilson#rochester,rr.com">jwilson#rochester,rr.com</a>, Sun 22 Nov 1998, 23:04 GMT </LI> </ul> </ul> <LI><strong><A NAME="00617" HREF="msg00617.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Sat 31 Oct 1998, 06:30 GMT </LI> <LI><strong><A NAME="00684" HREF="msg00684.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Jo Dillon <a href="mailto:emily#thelonious,new.ox.ac.uk">emily#thelonious,new.ox.ac.uk</a>, Mon 02 Nov 1998, 10:41 GMT <UL> <LI><strong><A NAME="00692" HREF="msg00692.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Vadim Tkachenko <a href="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</a>, Tue 03 Nov 1998, 00:24 GMT </LI> </UL> </LI> </ul> </ul> </ul> <LI><strong><A NAME="00681" HREF="msg00681.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Jo Dillon <a href="mailto:emily#thelonious,new.ox.ac.uk">emily#thelonious,new.ox.ac.uk</a>, Mon 02 Nov 1998, 10:14 GMT </LI> </ul> </ul> </ul> <LI><strong><A NAME="00608" HREF="msg00608.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, The Arrow <a href="mailto:arrow#trelleborg,mail.telia.com">arrow#trelleborg,mail.telia.com</a>, Sat 31 Oct 1998, 00:17 GMT <UL> <LI><strong><A NAME="00615" HREF="msg00615.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Thandor <a href="mailto:thandor#donut,dhis.org">thandor#donut,dhis.org</a>, Sat 31 Oct 1998, 04:29 GMT <UL> <LI><strong><A NAME="00637" HREF="msg00637.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, The Arrow <a href="mailto:arrow#trelleborg,mail.telia.com">arrow#trelleborg,mail.telia.com</a>, Sat 31 Oct 1998, 21:07 GMT <UL> <LI><strong><A NAME="00654" HREF="msg00654.html">[MUD-Dev] Re: DevMUD: Inheritable modules</A></strong>, Thandor <a href="mailto:thandor#donut,dhis.org">thandor#donut,dhis.org</a>, Sun 01 Nov 1998, 02:53 GMT </LI> </UL> </LI> </UL> </LI> </UL> </LI> </ul> </LI> </UL></BLOCKQUOTE> </ul> <hr> <center> [ <a href="../">Other Periods</a> | <a href="../../">Other mailing lists</a> | <a href="/search.php3">Search</a> ] </center> <hr> </body> </html>