A Prioritized Multiprocessor Spin Lock

  title={A Prioritized Multiprocessor Spin Lock},
  author={Theodore Johnson and Krishna Harathi},
  journal={IEEE Trans. Parallel Distrib. Syst.},
In this paper, we present the PR-lock, a prioritized spin-lock mutual exclusion algorithm for real time systems. The PR-lock is a contention-free spin lock, in which blocked processes spin on locally stored or cached variables. In contrast to previous work on prioritized spin locks, our algorithm maintains a pointer to the lock holder. As a result, our spin lock can support priority inheritance protocols. In addition, all work to maintain a priority queue is done while a process acquires a lock… CONTINUE READING
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