Decoupled Root Scanning in Multi-Processor Systems

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Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
Garbage Collection (GC) is a well known approach to simplify software development. Recently, it has started to gain acceptance also in the real-time community. Several hard real-time GC algorithms have been proposed for uniprocessors. However, the growing popularity of multi-processors for real-time systems entails that algorithms and techniques have to be developed that allow hard real-time GC on multi-processors as well. The authors propose a novel root cache, which aggregates information of the processor-local root sets in multi-processor systems. It allows that the root scanning phase of the garbage collector is decoupled from the root scanning phase of working threads.
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