Supporting Selective Formalism in CSP++ with Process-Specific Storage

Communicating Sequential Processes (CSP) is a formal language whose primary purpose is to model and verify concurrent systems. The CSP++ toolset was created to realize the concept of selective formalism by making machine-readable CSPm specifications both executable (through automatic C++ code genera...

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Bibliographic Details
Published in:2015 IEEE 17th International Conference on High Performance Computing and Communications, 2015 IEEE 7th International Symposium on Cyberspace Safety and Security, and 2015 IEEE 12th International Conference on Embedded Software and Systems pp. 1057 - 1065
Main Authors: Gardner, William B., Gumtie, Alicia, Carter, John D.
Format: Conference Proceeding
Language:English
Published: IEEE 01.08.2015
Subjects:
C++
code generation
CSPm
Eclipse
embedded systems
formal methods
Libraries
model-based design
Real-time systems
Robot sensing systems
selective formalism
soft real-time
software synthesis
Switches
System recovery
Timed CSP
Writing
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Summary:Communicating Sequential Processes (CSP) is a formal language whose primary purpose is to model and verify concurrent systems. The CSP++ toolset was created to realize the concept of selective formalism by making machine-readable CSPm specifications both executable (through automatic C++ code generation) and extensible (by allowing integration of C++ user-coded functions, UCFs). However, UCFs were limited by their inability to share data with each other, thus their application was constrained to solving simple problems in isolation. We extend CSP++ by providing UCFs in the same CSP process with safe access to a shared storage area, similar in concept and API to Pthreads' thread-local storage, enabling cooperation between them and granting them the ability to undertake more complex tasks without breaking the formalism of the underlying specification. Process-specific storage is demonstrated with a line-following robot case study, applying CSP++ in a soft real-time system. Also described is the Eclipse plug-in that supports the CSPm design flow.
DOI:10.1109/HPCC-CSS-ICESS.2015.265