NDLI: Starvation-free mutual exclusion with semaphores

Content Provider	Springer Nature Link
Author	Hesselink, Wim H. IJbema, Mark
Copyright Year	2011
Abstract	The standard implementation of mutual exclusion by means of a semaphore allows starvation of processes. Between 1979 and 1986, three algorithms were proposed that preclude starvation. These algorithms use a special kind of semaphore. We model this so-called buffered semaphore rigorously and provide mechanized proofs of the algorithms. We prove that the algorithms are three implementations of one abstract algorithm in which every competing process is overtaken not more than once by any other process. We also consider a so-called polite semaphore, which is weaker than the buffered one and is strong enough for one of the three algorithms. Refinement techniques are used to compare the algorithms and the semaphores.
Starting Page	947
Ending Page	969
Page Count	23
File Format	PDF
ISSN	09345043
Journal	Formal Aspects of Computing
Volume Number	25
Issue Number	6
e-ISSN	1433299X
Language	English
Publisher	Springer London
Publisher Date	2011-12-16
Publisher Place	London
Access Restriction	Subscribed
Subject Keyword	semaphore binary semaphore mutual exclusion refinement starvation freedom Math Applications in Computer Science Theory of Computation Computational Mathematics and Numerical Analysis
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Software

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Starvation-free mutual exclusion with semaphores