A GALS Language for Dynamic Distributed and Reactive Programs

International audienceWe propose a Globally Asynchronous Locally Syn- chronous language DSystemJ for designing dynamic distributed systems. DSystemJ, an extension of the reactive asynchronous SystemJ language, enhances it with dynamic creation and process mobility, and uses the Java language for programming sequential data computations. Moreover, DSystemJ is equipped with a formal semantics, which allows, formal system specifi- cation, reasoning, and automatic code generation. Compared to special purpose languages, DSystemJ is better in terms of implementation, scalability, and features. Compared to general purpose languages, DSystemJ is better because it exposes, at the language level, OS features like communication, concurrency, process creation and migration, therefore making it better suited for system level design of complex distributed systems