V2EX reentrant

Reentrant

释义 Definition

reentrant(形容词)可重入的;指(尤用于计算机/编程)某段代码、函数或系统在尚未完成上一次执行时,又被再次调用(例如被中断或多线程并发调用)仍能正确运行且不破坏共享状态
(也可指几何/地形中的内凹的、凹入的,如“reentrant angle”。)

发音 Pronunciation (IPA)

/rintrnt/

例句 Examples

A reentrant function can be called safely from multiple threads.
可重入函数可以被多个线程安全地调用。

The library was rewritten to be reentrant, so interruptions and nested calls no longer corrupt its global state.
这个库被重写为可重入的,因此中断和嵌套调用不再破坏它的全局状态。

词源 Etymology

re-(再次)+ entrant(进入者/进入的),源自 enter(进入;拉丁语 intrare “进入”)。该词早先用于描述“重新进入/凹入”的几何或空间形态,后来在计算机领域引申为“在执行过程中再次进入(调用)仍能保持正确性”的“可重入”概念。

相关词 Related Words

文学与著作中的用例 Notable Works

  • The Java Language Specification(涉及并发语义与可重入锁等相关概念的讨论语境中常出现)
  • Java Concurrency in Practice(并发与线程安全话题中常提及“reentrant lock / reentrant code”)
  • Operating System Concepts(操作系统并发、重入代码与中断处理相关章节常见该术语)
  • The Linux Programming Interface(系统调用、信号处理与可重入/异步安全相关内容中常出现)
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