Fu, Yan

Gao, Hui

Hesselink, Wim H.

English

The significant benefit of lock (or wait)-freedom for real-time systems is that by avoiding locks the potentials for deadlock and priority inversion are avoided. The lock-free algorithms often require the use of special atomic processor instructions such as CAS (compare and swap) or LL/SC (load linked/store conditional). However, many machine architectures support either CAS or LL/SC with restricted semantics. In this paper, we present a Practical lock-free implementation of the ideal semantics of LL/SC using only pointer-size CAS. To ensure our implementation is not flawed, we used the higher-order interactive theorem prover PVS for mechanical support

Proceedings - University of Groningen

Practical Lock-Free Implementation of LL/SC Using Only Pointer-size CAS

https://pure.rug.nl/ws/files/2669065/2009ProcICISEGao.pdf

Practical Lock-Free Implementation of LL/SC Using Only Pointer-size CAS

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Proceedings - University of Groningen