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Training Distributed Garbage: The DMOS Collector

By Richard Hudson, Ron Morrison and David S. Munro


A new garbage collection algorithm for distributed object systems, called DMOS (Distributed Mature Object Space), is presented. It is derived from two previous algorithms, MOS (Mature Object Space), sometimes called the train algorithm, and PMOS (Persistent Mature Object Space). The contribution of DMOS is that it provides the following unique combination of properties for a distributed collector: safety, completeness, non-disruptiveness, incrementality, and scalability. Furthermore, the DMOS collector is non-blocking and does not use global tracing. A complete description of the DMOS collector is given, together with its associated correctness arguments and its relationship to other work. 1 Introduction Automatic storage management is an essential property of high level programming systems providing an error-free abstraction with which the programmer may manipulate space without regard to the inessential details of physical storage. The abstraction holds only until the store becomes ..

Publisher: Springer-Verlag
Year: 1998
OAI identifier: oai:CiteSeerX.psu:
Provided by: CiteSeerX
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