Education Reading

Communicating Sequential Processes

P3-MediumOpen

https://www.cs.cmu.edu/~crary/819-f09/Hoare78.pdf

The version of CSP presented in Hoare's original 1978 paper was essentially a concurrent programming language rather than a process calculus. It had a substantially different syntax than later versions of CSP, did not possess mathematically defined semantics,[10] and was unable to represent unbounded nondeterminism.[11] Programs in the original CSP were written as a parallel composition of a fixed number of sequential processes communicating with each other strictly through synchronous message-passing. In contrast to later versions of CSP, each process was assigned an explicit name, and the source or destination of a message was defined by specifying the name of the intended sending or receiving process.