April 1997
- From out of the shadows... Dan Mazeau
- Introduction Shawn Halpenny
- Introduction Nathan Yospe
- Introduction Chris Gray
- Introduction coder@ibm.net
- Introduction S001GMU@nova.wright.edu
- Introduction Jeff Kesselman
- Introduction Chris Gray
- Introduction Mik Clarke
- Introduction Caliban Tiresias Darklock
- Introduction Mik Clarke
- Introduction Caliban Tiresias Darklock
- Introduction J C Lawrence
- Introduction Elia Morling
- Event-driven? Michael Hohensee
- Event-driven? Nathan Yospe
- Event-driven? coder@ibm.net
- Event-driven? Jon A. Lambert
- Event-driven? Adam Wiggins
- Event-driven? Shawn Halpenny
- Event-driven? Chris Gray
- Event-driven? coder@ibm.net
- (subject missing) Dan Mazeau
- A late introduction Jon A. Lambert
- Re-Introduction S001GMU@nova.wright.edu
- New guy Walter Goodwin
- New guy coder@ibm.net
- Socket Stuff Shawn Halpenny
- database stuff Chris Gray
- So in an event-driven server, how do you ... Michael Hohensee
- So in an event-driven server, how do you ... Nathan Yospe
- So in an event-driven server, how do you ... S001GMU@nova.wright.edu
- So in an event-driven server, how do you ... Chris Gray
- So in an event-driven server, how do you ... clawrenc@xsvr1.cup.hp.com
- So in an event-driven server, how do you ... clawrenc@cup.hp.com
- Off on the languages tangent! Chris Gray
- Yet Another Introduction Reed D. Copsey, Jr.
- Yet Another Introduction Nathan Yospe
- Yet Another Introduction clawrenc@cup.hp.com
- Yet Another Introduction clawrenc@cup.hp.com
- Yet Another Introduction Adam Wiggins
- Yet Another Introduction Dmitri Kondratiev
- self-intro: Cynbe Cynbe ru Taren
- Unique id's Chris Gray
- Unique id's clawrenc@cup.hp.com
- Unique id's Jon A. Lambert
- Unique id's coder@ibm.net
- Unique id's Jon A. Lambert
- Unique id's coder@ibm.net
- Unique id's Jeff Kesselman
- Unique id's clawrenc@cup.hp.com
- Unique id's Jon A. Lambert
- Dupes are my fault (again) coder@ibm.net
- six degrees of submission ... er, compilation. Cynbe ru Taren
- six degrees of submission ... er, compilation. Jeff Kesselman
- Java as a mudserver language Cynbe ru Taren
- Java as a mudserver language Jeff Kesselman
- Execution Chris Gray
- Using system time for ObjectIDs clawrenc@cup.hp.com
- short absence Chris Gray
- short absence coder@ibm.net
- Hello! Ross Nicoll
- Ho hum (clarifiyign AI terms) Jeff Kesselman
- Ho hum Ling
- Fw: Just a bit of musing Travis Casey
- Risk Assessment -- was (Ho hum) Jon A. Lambert
- Who is Steward and what can he do for me? Jon A. Lambert
- Who is Steward and what can he do for me? clawrenc@cup.hp.com
- Who is Steward and what can he do for me? Chris Gray
- project management (or coding, kings, and other things) Jon A. Lambert
- Threads and Sockets (Was Ho hum) S001GMU@nova.wright.edu
- Threads and Sockets (Was Ho hum) Jeff Kesselman
- Threads and Sockets (Was Ho hum) S001GMU@nova.wright.edu
- Threads and Sockets (Was Ho hum) clawrenc@cup.hp.com
- Threads and Sockets (Was Ho hum) Chris Gray
[Greg:]
:I know threads are less expensive than full process switching, but isn't using
:threads of the main program for handling I/O kinda dangerous? If the sockets
:or any I/O bombs, down comes the whole program, or if the program goes down,
:everyone gets dropped from the game. I've been leaning towards a
:multi-processesing, multi-threaded environment where *most* of the mechanics
:are grouped into one process that is threaded and all the file I/O and socket
:Handling is done with other processes (possibly also threaded). That way, if
:one process crashes the rest can keep plugging along or (in the case of the
:game crashing and the socket process still running) tell the players that the
:mud is experienceing technical difficulties (after some timeout period
:expires). I use the message queue system to communicate among the processes,
:mainly because it lends itself nicely to an event driven system and packaging
:commands and info into discrete units (which I prefer to deal with).
Threads can be fairly cheap, since they share the virtual address space,
and so can communicate quickly. With separate processes, however, it
generally takes a system call or two to safely communicate between them.
You *can* use things like spin-locks in shared memory regions/segments,
but you have to be careful, and be prepared for the occasional very
inappropriate time slice from the OS.
System calls are the bane of the parallel processing stuff we do at work,
as are process switches. We stand on one leg and wiggle our ears in order
to reduce the numbers of both :-)
--
Chris Gray cg@ami-cg.GraySage.Edmonton.AB.CA
- Strings & Memory Usage Greg Munt
- Strings & Memory Usage clawrenc@cup.hp.com
- Strings & Memory Usage Jeff Kesselman
- Strings & Memory Usage Shawn Halpenny
- Strings & Memory Usage ashen
- Strings & Memory Usage Chris Gray
- Steward coder@ibm.net
- r.g.m.* - worthwhile thread Nathan Yospe
- r.g.m.* - worthwhile thread clawrenc@cup.hp.com
- r.g.m.* - worthwhile thread Jeff Kesselman
- r.g.m.* - worthwhile thread Chris Gray
- (fwd) A Mud Protocol (MUD Markup Language) coder@ibm.net
- Ho hum (Sockets) Ling
- Steward and other painful friends coder@ibm.net
- A Combat System (please critique!) S001GMU@nova.wright.edu
- Your Message To mud-dev Jon A. Lambert
- I'm back Chris Gray
- Changes to the list coder@ibm.net
- Oops coder@ibm.net
- Verb binding Chris Gray
- Verb binding clawrenc@cup.hp.com
- Verb binding ashen
- Verb binding Chris Gray
- Verb binding Adam Wiggins
- Verb binding clawrenc@cup.hp.com
- Verb binding S001GMU@nova.wright.edu
- Verb binding Shawn Halpenny
- Verb binding Chris Gray
- Verb binding clawrenc@cup.hp.com
- Verb binding Chris Gray
- Why have a combat state? Jeff Kesselman
- Why have a combat state? clawrenc@cup.hp.com
- Introduction Jamie Norrish
- Introduction S001GMU@nova.wright.edu
- Introduction clawrenc@cup.hp.com
- Introduction Jeff Kesselman
- Introduction clawrenc@cup.hp.com
- Introduction Chris Gray
- Introduction Travis Casey
- Introduction Jeff Kesselman
- Introduction scherecwich@angelfire.com
- Introduction Jon A. Lambert
- Introduction Chris Gray
- (fwd) Issues from the digests and Wout's list Raz
- (fwd) Issues from the digests and Wout's list Chris Gray
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Raz
- (fwd) Issues from the digests and Wout's list Chris Gray
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Chris Gray
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Oliver Jowett
- (fwd) Issues from the digests and Wout's list Chris Gray
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Raz
- (fwd) Issues from the digests and Wout's list Miroslav Silovic
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Adam Wiggins
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Miroslav Silovic
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list Raz
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- (fwd) Issues from the digests and Wout's list clawrenc@cup.hp.com
- Me Raz
- Sendmail changes coder@ibm.net
- Reposts Adam Wiggins
- Semaphores, Mutices, fd_sets Greg Munt
- Semaphores, Mutices, fd_sets Jeff Kesselman
- Semaphores, Mutices, fd_sets clawrenc@cup.hp.com
- MUD Design Digest V1 #55 coder@ibm.net
- Me Raz
- Magnetic Scrolls' magical parser Greg Munt
- Magnetic Scrolls' magical parser clawrenc@cup.hp.com
- Magnetic Scrolls' magical parser Adam Wiggins
- Magnetic Scrolls' magical parser Nathan Yospe
- Magnetic Scrolls' magical parser Chris Gray
- Magnetic Scrolls' magical parser Ling
- Magnetic Scrolls' magical parser Chris Gray
- Magnetic Scrolls' magical parser Shawn Halpenny
- Reposts Jeff Kesselman
- Email change Alex Oren
- SUBSCRIBE Alex Oren
- (fwd) Death in Muds -(also Birth, Imprisonment, Aging, and skill development) coder@ibm.net
- fd_set limitations Greg Munt
- parsing Chris Gray