Dsuenhancer: A dynamic update system for resource-constrained software

Abstract

Dynamic Software Update (DSU) is an advanced software practice to change a running program with imposing negligible service interruption while updating. In this paper, we present DSUEnhancer, a DSU implementation for resource-constrained C programs like embedded software. DSUEnhancer generates a patch file off-line and loads it into the dynamic memory of an updated program on-line. In particular, DSUEnhancer is relatively lightweight in terms of memory and CPU usage and runs on the ARM architecture with the gcc cross compiler. © 2011 Springer-Verlag Berlin Heidelberg.