Thispaperdescribesan extensionto the KRoC occam-πsystem that allows processes programmed in C to participate in occam-π style concurrency. The uses of this are wide-ranging, from providing low-level C processes running concurrently as part of an occam-π network, through to concurrent systems programmed entirely in C. The easily extended API for C processes is based on the traditional Inmos C API, used also by CCSP, extended to cover new features of occam-π. One of the motivations for this work is to ease the developmentof low-level network communication infrastructures. A library that provides for networking of channel-bundles over TCP/IP networks is presented, in addition to initial performance figures.
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