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Paper Details%T Beyond Mobility \- What Next After CSP/pi? %A Michael Goldsmith %E Peter H. Welch, Herman Roebbers, Jan F. Broenink, Frederick R. M. Barnes, Carl G. Ritson, Adam T. Sampson, G. S. Stiles, Brian Vinter %B Communicating Process Architectures 2009 %X Process algebras like CSP and CCS inspired the original occam model of communication and process encapsulation. Later the pi\-calculus and various treatments handling mobility in CSP added support for mobility, as realised in practical programming systems such as occam\-pi, JCSP, CHP and Sufrin\[rs]s CSO, which allow a rather abstract notion of motion of processes and channel ends between parents or owners. Milner\[rs]s Space and Motion of Communicating Agents on the other hand describes the bigraph framework, which makes location more of a first\-class citizen of the calculus and evolves through reaction rules which rewrite both place and link graphs of matching sections of a system state, allowing more dramatic dynamic reconfigurations of a system than simple process spawning or migration. I consider the tractability of the notation, and to what extent the additional flexibility reflects or elicits desirable programming paradigms. |
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