如何确定的对象的大小，C＃？ [英] How to determine size of an object, c#?

问题描述

我有以下类：

public class MyClass
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public double Amount { get; set; }
    } 

当我试图找出这个类的大小在64位系统上通过使用WinDbg中，我得到了大小40
对此我无法理解，就我看过MyClass的应有

When I try to find out size of this class on a 64 bit system by using WinDbg I get the size 40 which I am not able to understand, as far as I have read MyClass should have

8 bytes for SyncBlock
8 bytes for TypeHandle
8 bytes for string reference
4 bytes for Int32
8 bytes for double

= 36 bytes

我没有10美誉，这就是为什么我不能够张贴的形象。
任何人有任何想法，为什么WinDbg的是显示4个额外的字节？

I don't have 10 reputation that's why i am not able to post image. Anyone has any idea why WinDbg is showing 4 extra bytes ?

推荐答案

我相信你所看到的是事情需要对齐到8字节边界的64位构建（4字节边界的32位版本）的效果。 40是最接近大小> = 36是一个8字节的边界上。这些链接谈对象大小：

I believe what you're seeing is the effect of things needing to align to 8 byte boundaries in 64 bit builds (and 4 byte boundaries in 32 bit builds). 40 is the closest size >= 36 that is on an 8 byte boundary. These links talk about object size:

的内存和字符串（乔恩斯基特的博客）

的标杆C＃struct和对象的尺寸

钻成的.NET Framework内幕处见CLR如何创建运行时对象

的多少内存一个C＃字符串占用

这篇关于如何确定的对象的大小，C＃？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！