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<H1>[MUD-Dev] CORBA, RMI, threads</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: [MUD-Dev] CORBA, RMI, threads</LI>
<LI><em>From</em>: Marc Eyrignoux <<A HREF="mailto:Marc.Eyrignoux#efrei,fr">Marc.Eyrignoux#efrei,fr</A>></LI>
<LI><em>Date</em>: Fri, 23 Jan 1998 12:30:47 +0100</LI>
<LI><em>Sender</em>: <A HREF="mailto:eyrignou#efrei,fr">eyrignou#efrei,fr</A></LI>
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<PRE>
Hello
I apologize for not saying very much on the list, but I don't think I
would
be helpful for anybody.
I have some questions that I couldn't solve by myself, even by rereading
all
the mails on the subject:
- If I chose to use CORBA or RMI for the communications between the
clients and
the serveur, I am afraid the generated traffic will be too important.
The aim is to
have efficient and quick communications, it doesn't matter for me if the
programing
is less easy.
- If I have a telnet client and a java serveur (or a java client and a
C++ serveur),
is it possible to use RMI? I know CORBA is programed on both platforms.
- I intend to have a multi-threaded serveur, as the mails on the list
seemed to
prove it was the best way to program the evenemential part of the code.
So my projects
are:
* one thread per connection, for listening
* the use of a multi-threaded database like postgreSQL or mySQL, which
libraries are
already threaded
* a thread for the time (in my mud, 3mn_real_life=1h_mud_life)
* a mecanism based upon thread for the event handler.
So they are 3 points I would like to get clearer:
+ even if the functions given in the database library are multithreaded,
do I need to
thread the functions that call them?
+ are NPCs threads in your servers? or is there something like
while (1)
{
getTheListOfActiveMonsters();
for (monster = firstMonster(); monster = lastMonster(); monster++)
{
monster.act();
}
}
In the case monsters are threads, do you need to stock somewhere the
list of active monsters?
In this case, is there an accurate way of stocking them?
In fact, I intend to make the monsters act every 15 seconds. A thread
that would sleep for 15
seconds and acts according to the situation at the moment it wakes up
seems to be a good way
for doing this. But I forget the case when the monster has to know
something that happened
while it was sleeping. The question is: do I have to set in place a
mecanism that warns the monster,
or isn't it obliged? (in fact my question is: are monsters in your muds
intelligent or not?
have you programed that kind of things?)
+ I have read the structure of the event handler of people who explained
them.
In the case of an event queue, you stock the events in a structure
handled by a class.
But this class has to do something like
while (1)
{
getTheMostUrgentEvents();
executeEvent();
rescheduleOtherEvents();
}
Isn't it a lost of cpu time compared to:
thread.sleep(n);
But in the case of totally threaded events, you have to create them,
stock them in order to interrupt
them. 2 questions: is there a thread per possible event? is there a
generic class eventThread which
may contain any event? In this case, is there an accurate way of
programing it?
once again, is there an intelligent way of stocking threads? I
thing about a
hashtable which value would be the thread, but what would be the key?
Thanks in advance.
</PRE>
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<li><strong><A NAME="00300" HREF="msg00300.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>
<ul compact><li><em>From:</em> Nathan Yospe <yospe#hawaii,edu></li></ul>
<li><strong><A NAME="00294" HREF="msg00294.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>
<ul compact><li><em>From:</em> Vadim Tkachenko <vadimt#4cs,com></li></ul>
</UL></LI></UL>
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<UL><LI><STRONG>References</STRONG>:
<UL>
<LI><STRONG><A NAME="00109" HREF="msg00109.html">OT: DCOM and RMI</A></STRONG>
<UL><LI><EM>From:</EM> "Jon A. Lambert" <jlsysinc#ix,netcom.com></LI></UL></LI>
<LI><STRONG><A NAME="00126" HREF="msg00126.html">Re: [MUD-Dev] OT: DCOM and RMI</A></STRONG>
<UL><LI><EM>From:</EM> Vadim Tkachenko <vadimt#4cs,com></LI></UL></LI>
<LI><STRONG><A NAME="00208" HREF="msg00208.html">Re: [MUD-Dev] OT: DCOM and RMI</A></STRONG>
<UL><LI><EM>From:</EM> alexo#bigfoot,com (Alex Oren)</LI></UL></LI>
</UL></LI></UL>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] OT: DCOM and RMI</STRONG>, <EM>(continued)</EM>
<ul compact>
<ul compact>
<LI><strong><A NAME="00126" HREF="msg00126.html">Re: [MUD-Dev] OT: DCOM and RMI</A></strong>,
Vadim Tkachenko <a href="mailto:vadimt#4cs,com">vadimt#4cs,com</a>, Fri 09 Jan 1998, 00:48 GMT
<UL>
<LI><strong><A NAME="00137" HREF="msg00137.html">Re: [MUD-Dev] OT: DCOM and RMI</A></strong>,
Miroslav Silovic <a href="mailto:silovic#zesoi,fer.hr">silovic#zesoi,fer.hr</a>, Fri 09 Jan 1998, 12:00 GMT
</LI>
<LI><strong><A NAME="00142" HREF="msg00142.html">Re: [MUD-Dev] OT: DCOM and RMI</A></strong>,
Vadim Tkachenko <a href="mailto:vadimt#4cs,com">vadimt#4cs,com</a>, Fri 09 Jan 1998, 17:08 GMT
</LI>
<LI><strong><A NAME="00208" HREF="msg00208.html">Re: [MUD-Dev] OT: DCOM and RMI</A></strong>,
Alex Oren <a href="mailto:alexo#bigfoot,com">alexo#bigfoot,com</a>, Mon 12 Jan 1998, 13:02 GMT
<UL>
<LI><strong><A NAME="00293" HREF="msg00293.html">[MUD-Dev] CORBA, RMI, threads</A></strong>,
Marc Eyrignoux <a href="mailto:Marc.Eyrignoux#efrei,fr">Marc.Eyrignoux#efrei,fr</a>, Fri 23 Jan 1998, 11:30 GMT
<UL>
<LI><strong><A NAME="00294" HREF="msg00294.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>,
Vadim Tkachenko <a href="mailto:vadimt#4cs,com">vadimt#4cs,com</a>, Fri 23 Jan 1998, 15:39 GMT
<UL>
<LI><strong><A NAME="00307" HREF="msg00307.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>,
Caliban Tiresias Darklock <a href="mailto:caliban#darklock,com">caliban#darklock,com</a>, Sun 25 Jan 1998, 03:32 GMT
<UL>
<LI><strong><A NAME="00443" HREF="msg00443.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>,
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Thu 12 Feb 1998, 22:22 GMT
</LI>
</UL>
</LI>
</UL>
</LI>
<LI><strong><A NAME="00300" HREF="msg00300.html">Re: [MUD-Dev] CORBA, RMI, threads</A></strong>,
Nathan Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Fri 23 Jan 1998, 18:58 GMT
</LI>
</UL>
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</UL>
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