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Techniques for software thread integration in real-time embedded systems

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2 Author(s)
Dean, A.G. ; Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA ; Shen, J.P.

This paper presents details of how to perform thread integration to provide low-cost concurrency for general-purpose microcontrollers and microprocessors. A post-pass compiler interleaves multiple threads of control at the machine instruction level for concurrent execution on a uniprocessor and provides very fine-grain multithreading without context switching overhead. Such efficient concurrency allows implementation of real-time functions in software rather than dedicated peripheral hardware. We investigate a set of code transformations which allow systematic integration of a real-time guest thread into a host thread, producing an integrated thread which meets all real-time requirements. The thread integration concept and the associated code transformations have been applied to example functions chosen from three application domains to evaluate the method's feasibility

Published in:

Real-Time Systems Symposium, 1998. Proceedings., The 19th IEEE

Date of Conference:

2-4 Dec 1998

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