PLEX (programming language): Difference between revisions

Revision as of 00:10, 8 March 2009

Revision as of 04:16, 24 April 2009

Line 1:

'''PLEX''' (''Programming Language for EXchanges'') is a special-purpose, pseudo-parallel and event-driven real-time [[programming language]]. Dedicated for [[AXE telephone exchange|AXE telephone exchanges]], it was developed by Göran Hemdahl at [[Ericsson]].<ref name=ErlangHistory>{{cite web |url= http://www.cs.chalmers.se/Cs/Grundutb/Kurser/ppxt/HT2007/general/languages/armstrong-erlang_history.pdf|title= A History of Erlang|accessdate=2009-03-07 |author= Joe Armstrong|date= |work= |publisher=Ericsson AB}}</ref>. Originally designed in the [[1970s]], it has been continuously evolving since then.<ref name=Semantics>{{cite web |url= http://cdc.ioc.ee/appsem04/webproc/short/erikson-lisper.pdf|title= A Formal Semantics for PLEX|accessdate=2009-03-07 |author= Johan Erikson and Björn Lisper|date= |work= |publisher=Mälardalen University}}</ref>. The language has two variants: ''Plex-C'' used for AXE Central Processors (CP) and ''Plex-M'' used for Extension Module Regional Processors (EMRP).<ref name=Execution>{{cite web |url= http://www.mrtc.mdh.se/publications/0802.pdf|title= The Execution Model of APZ/PLEX - An Informal Description|accessdate=2009-03-07 |author= Johan Erikson and Bo Lindell|date= |work= |publisher=Mälardalen University}}</ref>.

Program in PLEX consists of several independent subprograms. Code execution is triggered by special events, encoded as signals.<ref name=Execution/>.

== Notes ==