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A Zero-latency Cycle Detection Scheme for Enhanced Parallelism in Multiprocessing Systems  

Kim Ju Gyun (숙명여대 정보과학부)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.32, no.2, 2005 , pp. 49-54 More about this Journal
Abstract
This Paper Presents a non-blocking deadlock detection scheme with immediate cycle detection in multiprocessing systems. We assume an expedient state and a special case where each type of resource has one unit and each request is limited to one resource unit at a time. Unlike the previous deadlock detection schemes, this new method takes O(1) time for detecting a cycle and O(n+m) time for blocking or handling resource release where n and m are the number of processes and that of resources in the system. The deadlock detection latency is thus minimized and is constant regardless of n and m. However, in a multiprocessing system, the operating system can handle the blocking or release on-the-fly running on a separate processor, thus not interfering with user process execution. To some applications where deadlock is concerned, a predictable and zero-latency deadlock detection scheme could be very useful.
Keywords
Deadlock; Zero-latency; Cycle detection; Parallelism;
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