futex

F4U1T1E1X8

noun

A mechanism for basic locking, based on an atomic integer in userspace that may be operated upon from multiple processes or threads.

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Meanings

nounfutex (plural futexes)

plural futexes

  1. computingA mechanism for basic locking, based on an atomic integer in userspace that may be operated upon from multiple processes or threads.

Origin

Contraction of fast + userspace + mutex; see mutex.

Full word history & related roots →
Cite this entry
APA

futex. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/futex

MLA

“futex.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/futex. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “futex,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/futex.

Source: futex on Wiktionary, CC BY-SA 4.0.