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C has the _Atomic keyword that allows the creation of atomic variables that can be used instead of mutexes in some cases for lock-free yet still thread-safe multithreaded programming. This chapter covers the _Atomic keyword, atomic library functions, memory barriers, compare-and-swap, lock-free operations, the “ABA Problem,” versioned pointers, and false sharing.

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_Atomic

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  • 发表日期：

    2025年

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  • Paul J. Lucas

摘要

C has the _Atomic keyword that allows the creation of atomic variables that can be used instead of mutexes in some cases for lock-free yet still thread-safe multithreaded programming. This chapter covers the _Atomic keyword, atomic library functions, memory barriers, compare-and-swap, lock-free operations, the “ABA Problem,” versioned pointers, and false sharing.