更快的替代memcpy的？ [英] faster alternative to memcpy?

问题描述

我有一个做的memcpy功能，但它占用周期的大量。是否有一个更快的替代方案/方法比使用的memcpy移动一块内存？

I have a function that is doing memcpy, but it's taking up an enormous amount of cycles. Is there a faster alternative/approach than using memcpy to move a piece of memory?

推荐答案

的memcpy 很可能是你可以在内存中复制字节的最快方法。如果你需要的东西更快 - 尝试搞清楚的不的复制周围的事物，例如一种方式交换指针只，而不是数据本身。

memcpy is likely to be the fastest way you can copy bytes around in memory. If you need something faster - try figuring out a way of not copying things around, e.g. swap pointers only, not the data itself.

这篇关于更快的替代memcpy的？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！