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Diffstat (limited to '')
| -rw-r--r-- | doc/info/mds.texinfo | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/doc/info/mds.texinfo b/doc/info/mds.texinfo index 0fbdadb..217f4c1 100644 --- a/doc/info/mds.texinfo +++ b/doc/info/mds.texinfo @@ -111,6 +111,8 @@ Texts. A copy of the license is included in the section entitled * Variable index:: Index of environment variables. * Option index:: Index of command line options. * Concept index:: Index of concepts. +* Function index:: Index of functions. +* Data type index:: Index of data types. @end menu @c TODO @detailmenu @@ -127,6 +129,7 @@ Rather than one, possibly modular, process --- a monolithic process --- @code{mds} is comprised of many small servers, each exchangable and responsible for one thing. +@cpindex{Goals of @command{mds}} @command{mds}'s goal is neither security, performance nor a perfect graphical experience. @command{mds} is all about flexibility and freedom 0@footnote{The freedom to run @@ -193,6 +196,10 @@ of crashing. @node Layers @section Layers +@cpindex{Layers, architecture} +@cpindex{Architectural layers} +@cpindex{Kernel} +@cpindex{Master server} The @command{mds} display server in architectured in three layers. The first layer is called the kernel. The kernel is responsible for acquiring a display @@ -209,14 +216,21 @@ the domain socket for communication with the display server, it is not responsible for using it, that mission falls to the master server. +@cpindex{Master server} +@cpindex{Message passing, coordination} +@cpindex{Communication, coordination} +@cpindex{Interprocess communication, coordination} The second layer is the master server. The master server has two responsibilities: coordinating message passing between other servers and clients -@footnote{In @command{mds} their is no functional +@footnote{In @command{mds} there is no functional distinction between servers and clients, the distinction is purely semantic.} and starting other servers. +@cpindex{Starting of servers} +@cpindex{Servers, starting} +@pgindex{@file{mdsinitrc}} The third layer is the other servers and clients. protocolwise there is no specification on how they are started. But in the reference @@ -238,6 +252,10 @@ of the display server. @node Interprocess Communication @section Interprocess Communication +@cpindex{Message passing, mechanism} +@cpindex{Communication, mechanism} +@cpindex{Interprocess communication, mechanism} +@cpindex{Master server} Intrinsic to @command{mds} is a powerful interprocess communication mechanism. Servers and clients connect to the display server by @@ -257,16 +275,27 @@ Multicast a message. Join or leave a multicast group. @end itemize +@cpindex{Multicast groups} +@cpindex{Client ID assignment} +@cpindex{ID assignment} +@cpindex{Assignment of ID} +@cpindex{Disconnection} +@cpindex{Master server} Upon assignment of an ID the master server will automatically place the client in a multicast group for that specific client. This automatically multicast group assignment is done by the master server simply so you as a debugger do not forget to do so. When -a client is disconnected it will and out a +a client is disconnected it will send out a message to a specific multicast group that the client, refered to by it's ID, have closed. +@cpindex{Message passing, message structure} +@cpindex{Communication, message structure} +@cpindex{Interprocess communication, message structure} +@cpindex{Message structure, message passing} +@cpindex{Master server} A message in the @command{mds} protocol is comprised of two parts: headers and a payload. When a client joins a multicast group it is @@ -278,6 +307,13 @@ could be used for logging, possibly spying and networking.}. Thus a message is automatically multicasted to groups indicated by its headers. +@cpindex{Interceptions, message passing} +@cpindex{Message passing, message modification} +@cpindex{Communication, message modification} +@cpindex{Interprocess communication, message modification} +@cpindex{Message modification, message passing} +@cpindex{Master server} +@cpindex{Multicast groups} The multicast groups and receiving of message is called interceptions. The interesting property of interceptions is that they may @@ -298,6 +334,10 @@ the message to make it empty. A consumed message will not be send to any further clients or servers in the interception list. +@cpindex{Interception priority, message passing} +@cpindex{Priority, interception, message passing} +@cpindex{Message consumption, message passing} +@cpindex{Consumption, interception, message passing} To make this mechanism sensible, a server or client can set a priority when it registers for interception (does not need to be @@ -310,7 +350,7 @@ recipients is determined by priority the servers registed with. The message first sent to the recipients with highest priority and last to the recipients with lowest priority, -and orderd by the priority between those +and ordered by the priority between those priorities. Of two or more servers have the same priority the order in which they will receive the message, of those recipients, @@ -9502,6 +9542,14 @@ backgrund. @appendix Concept index @printindex cp +@node Function index +@appendix Function index +@printindex fn + +@node Data type index +@appendix Data type index +@printindex tp + @bye |