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An Operational Semantics for the Execution of PLEX in a Shared Memory Architecture
Mälardalen University, School of Innovation, Design and Engineering.
2008 (English)Report (Other academic)
Abstract [en]

Programming Language for EXchanges, PLEX, is a pseudoparallel

and event-driven real-time language developed by Ericsson.

It is designed for, and used in, central parts of the AXE telephone

switching system. The language has a signal paradigm as

its top execution level, and it is event-based in the sense that only

events, encoded as signals, can trigger code execution. Due to the

fact that a PLEX program file consists of several independent subprograms,

in combination with an execution model where new jobs

are spawned and put in queues, we also classify the language as

pseudo-parallel.

In previous works, we have presented a structural operational

semantics for sequential execution of PLEX in the current singleprocessor

architecture, i.e., a specification/formalization of the behavior

of PLEX in the system as it is today.

In this report, we extend our previous work by specifying the

semantics for a restricted parallel implementation of the language.

Place, publisher, year, edition, pages
Dept. of Computer Science and Electronics, Mälardalen University , 2008.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-7173ISRN: MDH-MRTC-227/2008-1-SEOAI: oai:DiVA.org:mdh-7173DiVA, id: diva2:237183
Available from: 2009-09-25 Created: 2009-09-25 Last updated: 2014-01-25Bibliographically approved

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