A procedure-based dynamic software update
Janghoon Lyu
Youngjin Kim
Yongsub Kim
Inhwan Lee
Dept. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea;
This paper appears in: Dependable Systems and Networks, 2001. DSN 2001. International Conference on
Publication Date: 1-4 July 2001
On page(s): 271-280
Location: Goteborg, Sweden,
ISBN: 0-7695-1101-5
INSPEC Accession Number: 7036995
Digital Object Identifier: 10.1109/DSN.2001.941412
Current Version Published: 2008-02-01
Abstract
This paper presents a method to update a single or multiple procedures of running software, without stopping the software, by directly modifying a part of the process address space. The paper addresses two issues for procedure-based dynamic software update. First, the paper presents a well-defined sequence to perform an update while ensuring correct operation and small performance loss. Second the paper provides a solution for how to make the new version procedure work correctly in the address space of the old version process. The method is illustrated in the SUN Solaris environment. Using the method can reduce the downtime caused by software upgrade when changes are limited to text and local data.
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