.net - .NET 中的 "word-aligned"是什么？

Question

Here在这篇文章中，Eric Lippert告诉 引用必须在 .NET 中字对齐。有人可以解释一下他在这里的意思吗？ - 在互联网上搜索，但找不到任何与此相关的有用资源。

完整句子如下:

You never want to put a byte next to a reference in a struct if you can possibly avoid it; such a struct will waste three to seven bytes automatically. References have to be word-aligned in .NET.

Answer 1

我认为这与数据的大小以及结构内数据的对齐和填充有关。

已说明here (强调我的):

What is important is that the compiler will add “padding” bytes to align the data within a struct. You can control the padding explicitly, but notice that some processors throw an exception if you use data that isn’t aligned, and this creates a more complicated problem for .NET Compact users.

也看看here 。显然，字长是

the number of bits that a CPU can process at one time.

因此，对齐数据意味着将它们放在一起，这样它们之间就不会因填充而丢失内存，并且您会考虑在该特定平台上可以读取的内存大小。