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Object-oriented programming techniques have become a vital part of modern software engineering. Most large new commercial software products are designed today using objects oriented principles along with supporting development environments and tools. Such methodology is particularly appealing for parallel computing, where there is great need for approaches capable of simplifying the programming task and producing high quality software more quickly. In this project we have carried out research that will lead to a new parallel object-oriented language based on C++. The new language, C++-Linda, is a novel combination of the most widely used object-oriented language and a successful environment for parallel computing that supports a virtual shared memory model for process interaction. This combination is an especially appropriate one because Linda's memory model is naturally object-oriented, enabling a seamless design that is completely consistent with object-oriented methodology. In this Phase I project, we have carried out research to understand the basic issues underlying parallel object-oriented languages, and we have created a preliminary design for C++-Linda. In a future Phase II project, we plan to develop a prototype implementation that will serve as a guide for eventual commercialization. Parallel computing, Programming languages, Object-oriented languages, Linda, C++-Linda, (C++).

CC++ is a parallel object-oriented programming language that uses parallel composition, atomic functions, and single-assignment variables to express concurrency. We show that this programming paradigm is equivalent to several traditional imperative communication and synchronization models, namely;semaphores, monitors, and asynchronous channels. A collection of libraries which integrates these traditional models with CC++ is specified, implemented, and formally verified.