Group Mutual Exclusion in Token Rings
نویسندگان
چکیده
The group mutual exclusion (GME) problem was introduced by Joung [6]. The GME solution allows n processes to share m mutually exclusive resources. We first present a group mutual exclusion algorithm (Algorithm GME ) for anonymous token rings. The space requirement and the size of messages of this algorithm depend only on the number of shared resources (O(logm) bits). So, the proposed algorithm solves the problem suggested in [7], which is to obtain a solution using messages of bounded size. All costs related to the time depend on n. We then present two variations of Algorithm GME . We design the second algorithm (Algorithm mGME) such that its cost depends mainly on the m instead of n. The third algorithm (Algorithm nmGME ) is a general algorithm which takes advantage of the lowest value between n and m.
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