Titlebook: Shared-Memory Synchronization; Michael L. Scott,Trevor Brown Book 2024Latest edition The Editor(s) (if applicable) and The Author(s), unde

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Read-Mostly Atomicity,ts of Sec.?. will also suffice. In particular, . optimizations exploit the fact that operations can safely execute concurrently, while still maintaining atomicity, if they read shared data without writing it.

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Read-Mostly Atomicity,al section. While mutual exclusion is sufficient to ensure atomicity, it is by no means necessary. Any mechanism that satisfies the ordering constraints of Sec.?. will also suffice. In particular, . optimizations exploit the fact that operations can safely execute concurrently, while still maintaini

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Nonblocking Algorithms,orithms achieve atomicity by means of mutual exclusion, implemented using locks. Locks are ., however, in the formal sense of the word: whether implemented by spinning or rescheduling, they admit system states in which a thread is unable to make progress without the cooperation of one or more peers.

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Nonblocking Algorithms, This in turn leads to the problems of inopportune preemption and convoys, discussed in Sec.?.. Locks—coarse-grain locks in particular—are also typically conservative: in the course of precluding unacceptable thread interleavings, they tend to preclude many acceptable interleavings as well.