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Interprocess Communication in the Process Specification Language



Conrad E. Bock


Interprocess communication is ubiquitous in modern computing, appearing most commonly as inputs, outputs, and messaging. This paper formalizes interprocess communication based on the involvement of entities in a process, and how processes determine which entities are involved in other processes. It provides dimensions for characterizing interprocess communication, and places common process language capabilities within them. It provides a formalization of inputs, outputs, and messaging in extensions of the Process Specification Language (PSL), to reduce ambiguity and increase expressiveness in commonly used process languages. The paper also shows how to incrementally translate common process language elements to PSL, resulting in much smaller expressions, for readability and efficient inference.
NIST Interagency/Internal Report (NISTIR) - 7348
Report Number


Inputs and Outputs, Interprocess Communication, ISO, Messages, Participation Constraints, Process Specification Language, PSL


Bock, C. (2006), Interprocess Communication in the Process Specification Language, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 18, 2024)


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Created October 1, 2006, Updated November 10, 2018