Developing embedded multi-threaded applications with CATAPULTS, a domain-specific language for generating thread schedulers

Authors:
Matthew D. Roper;Ronald A. Olsson
Affiliations:
University of California, Davis, Davis, CA;University of California, Davis, Davis, CA
Venue:
Proceedings of the 2005 international conference on Compilers, architectures and synthesis for embedded systems
Year:
2005

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Abstract

This paper describes CATAPULTS, a domain-specific language for creating and testing application-specific user level thread schedulers. Using a domain-specific language to write thread schedulers provides three advantages. First, it modularizes the thread scheduler, making it easy to plug in and experiment with different schedulers. Second, using a domain-specific language for scheduling code helps prevent several of the common programming mistakes that are easy to make when programming in low-level C or assembly. Finally, the CATAPULTS translator has multiple backends that generate code for different languages and libraries. This makes it easy to prototype an embedded application on a regular PC, and then develop the final version on the embedded hardware; the CATAPULTS translator will take care of generating the appropriate code for both the PC prototype and the final embedded version of the program. Using our implementation of CATAPULTS for Z-World's embedded Rabbit processors, we obtained a performance gain of about 12.6% at the expense of about 12.7% increase in code size for a fairly typical embedded application.