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<H1>[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</H1>
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<LI><em>To</em>: "<A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A>" <<A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A>></LI>
<LI><em>Subject</em>: [MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</LI>
<LI><em>From</em>: <A HREF="mailto:oliver#jowett,manawatu.planet.co.nz">oliver#jowett,manawatu.planet.co.nz</A></LI>
<LI><em>Date</em>: Sat, 18 Jul 1998 18:24:00 +1200 (NZST)</LI>
<LI><em>Reply-To</em>: <A HREF="mailto:mud-dev#kanga,nu">mud-dev#kanga,nu</A></LI>
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<PRE>
On Sat, 18 Jul 1998, Todd Lair wrote:
> Each player and the master socket, gets its own individual
> event associated with it. When this type of event ripens,
> it means that this single socket needs polling to see if it
> has input, output, or an exception. read: not all the
> sockets, but the one. My question again, is how should I
> go about determining the read, write, exception status.
> Currently, I'm using select, setting a single bit in each
> of the fd_sets for the descriptor. This doesn't seem ideal
> to me, since over time, the descriptors get higher in
> number value, and the select call has to scan the fd_sets
> to see where the single bit is set in each of the sets.
>
> I was wondering if I should just use recv (possibly passing
> the the peek parameter) to determine the status of the
> descriptor that needs to polled. I was wondering what
> returns I need to worry about, and if this would be a much
> more efficient method opposed to the select call on the
> single descriptor.
I assume that the reason you're checking individual sockets via events is
due to some command-parsing requirement, eg. commands won't be processed
until N seconds in the future after some action by a player.
Why not move this to a separate layer? At the lowest level, select() on
ALL sockets with a timeout equal to the time to next pending event. When
input arrives, read and buffer; when output is possible, write from a
buffer; when exceptions occur, set an appropriate flag. Loop back and
repeat the select. Then when the event actually goes off, you check and
modify the buffers.
Think of it as a wrapper around recv() et al. to avoid making many "real"
syscalls. The implementation of the wrapper could be different - the same
high-level model could apply to, say, using a pool of threads to handle
I/O, I suspect.
-O
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<li><strong><A NAME="00269" HREF="msg00269.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>
<ul compact><li><em>From:</em> s001gmu#nova,wright.edu</li></ul>
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<LI><STRONG><A NAME="00248" HREF="msg00248.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></STRONG>
<UL><LI><EM>From:</EM> "Todd Lair" <tlair#mailzone,com></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><strong><A NAME="00250" HREF="msg00250.html">[MUD-Dev] Design Patterns for Concurrent, Parallel, and Distributed Systems</A></strong>,
Alex Oren <a href="mailto:alexo#bigfoot,com">alexo#bigfoot,com</a>, Sun 19 Jul 1998, 08:32 GMT
<LI><strong><A NAME="00246" HREF="msg00246.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sat 18 Jul 1998, 01:51 GMT
<UL>
<LI><strong><A NAME="00661" HREF="msg00661.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Tue 11 Aug 1998, 17:32 GMT
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<li><Possible follow-up(s)><br>
<LI><strong><A NAME="00248" HREF="msg00248.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
Todd Lair <a href="mailto:tlair#mailzone,com">tlair#mailzone,com</a>, Sat 18 Jul 1998, 05:18 GMT
<UL>
<LI><strong><A NAME="00249" HREF="msg00249.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
oliver <a href="mailto:oliver#jowett,manawatu.planet.co.nz">oliver#jowett,manawatu.planet.co.nz</a>, Sat 18 Jul 1998, 06:27 GMT
<UL>
<LI><strong><A NAME="00269" HREF="msg00269.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
s001gmu <a href="mailto:s001gmu#nova,wright.edu">s001gmu#nova,wright.edu</a>, Mon 20 Jul 1998, 15:57 GMT
<UL>
<LI><strong><A NAME="00273" HREF="msg00273.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
Oliver Jowett <a href="mailto:oliver#jowett,manawatu.planet.co.nz">oliver#jowett,manawatu.planet.co.nz</a>, Mon 20 Jul 1998, 21:51 GMT
<UL>
<LI><strong><A NAME="00277" HREF="msg00277.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
s001gmu <a href="mailto:s001gmu#nova,wright.edu">s001gmu#nova,wright.edu</a>, Tue 21 Jul 1998, 13:49 GMT
<UL>
<LI><strong><A NAME="00300" HREF="msg00300.html">[MUD-Dev] Re: [CODE] [LANGUAGE/PLATFORM SPECIFIC] My Event Engine</A></strong>,
Joel Kelso <a href="mailto:joel#ee,uwa.edu.au">joel#ee,uwa.edu.au</a>, Wed 22 Jul 1998, 02:21 GMT
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