malloc（）vs. HeapAlloc（） [英] malloc() vs. HeapAlloc()

问题描述

malloc（）和HeapAlloc（）之间有什么区别？据我所知，malloc从堆中分配内存，就像HeapAlloc一样，对吧？

What is the difference between malloc() and HeapAlloc()? As far as I understand malloc allocates memory from the heap, just as HeapAlloc, right?

那么有什么区别？

谢谢！

推荐答案

你是对的，他们都从堆分配内存。但有区别：

You are right that they both allocate memory from a heap. But there are differences:

• malloc（） 。


• HeapAlloc（） 不可移植，它是Windows API函式。

• malloc() is portable, part of the standard.
• HeapAlloc() is not portable, it's a Windows API function.

很可能在Windows上， malloc 将在 HeapAlloc 之上实现。我希望 malloc 要比 HeapAlloc 更快。

It's quite possible that, on Windows, malloc would be implemented on top of HeapAlloc. I would expect malloc to be faster than HeapAlloc.

HeapAlloc 比 malloc 更具灵活性。特别是它允许你指定你希望分配的堆。

HeapAlloc has more flexibility than malloc. In particular it allows you to specify which heap you wish to allocate from. This caters for multiple heaps per process.

对于几乎所有的编码情况，你都会使用 malloc ，而不是 HeapAlloc 。虽然你标记了你的问题C ++，我希望你使用新！

For almost all coding scenarios you would use malloc rather than HeapAlloc. Although since you tagged your question C++, I would expect you to be using new!

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