Multiple tuple spaces in Linda

Multiple tuple spaces have been envisioned for Linda since the system's first comprehensive description; they are intended for two purposes. First, by allowing tuples to be organized into a hierarchy of separate spaces, they should make it possible to construct large Linda programs out of modules, to realize Linda's long-standing potential to be a model for persistent storage, to enforce separation between the system and users in a Linda-based operating system, and to support abstraction. Second, if we allow tuple spaces to be included among the fields of ordinary tuples, the Linda tuple-manipulation operators will allow us to operate not only on single data objects but on whole computations.This work is supported by National Science Foundation SBIR grant ISI-8704025, by National Science Foundation CCR-8601920 and CCR-8657615, and by ONR N00014-86-K-0310. Linda is a trademark of Scientific Computing Associates, New Haven.