From software extensions to product lines of dataflow programs |
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Authors: | Rui C Gonçalves Don Batory João L Sobral Taylor L Riché |
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Affiliation: | 1.High-Assurance Software Laboratory,INESC TEC,Braga,Portugal;2.Department of Computer Science,The University of Texas at Austin,Austin,USA;3.Departamento de Informática,Universidade do Minho,Braga,Portugal;4.National Instruments,Austin,USA |
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Abstract: | Dataflow programs are widely used. Each program is a directed graph where nodes are computations and edges indicate the flow of data. In prior work, we reverse-engineered legacy dataflow programs by deriving their optimized implementations from a simple specification graph using graph transformations called refinements and optimizations. In MDE speak, our derivations were PIM-to-PSM mappings. In this paper, we show how extensions complement refinements, optimizations, and PIM-to-PSM derivations to make the process of reverse engineering complex legacy dataflow programs tractable. We explain how optional functionality in transformations can be encoded, thereby enabling us to encode product lines of transformations as well as product lines of dataflow programs. We describe the implementation of extensions in the \(\mathtt{ReFlO}\) tool and present two non-trivial case studies as evidence of our work’s generality. |
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