是一个bool读/写原子在C＃ [英] Is a bool read/write atomic in C#

问题描述

正在访问C＃中的 bool 字段原子？特别是，我需要锁定：

Is accessing a bool field atomic in C#? In particular, do I need to put a lock around:

class Foo
{
   private bool _bar;

   //... in some function on any thread (or many threads)
   _bar = true;

   //... same for a read
   if (_bar) { ... }
}

推荐答案

是的。

以下数据类型的读取和写入是原子的：bool，char，byte，sbyte，short，ushort，uint，int，float和引用类型。

Reads and writes of the following data types are atomic: bool, char, byte, sbyte, short, ushort, uint, int, float, and reference types.

< .71）.aspxrel =nofollow noreferrer> C＃语言规范。

编辑：可能还值得了解 volatile 关键字。

It's probably also worthwhile understanding the volatile keyword.

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