C ++从底部到顶部读取文件 [英] C++ Read file from bottom to top

问题描述

我有一个非常大的文件，我需要解析，所以一次读入内存是不理想的。文件的结构，如果我可以从eof开始，一直到开始，这将是很多，更容易。有没有人有一个好的技巧这样做？我使用Visual Studio 2008和C ++。感谢

I have a very large file I need to parse, so reading it into memory all at once is non-ideal. The way the file is structured, it would be much, much easier if I could start at eof and go up to the beginning. Does anyone have a good trick for doing this? I'm using Visual Studio 2008 and C++. Thanks

推荐答案

如果您的操作系统支持它，请考虑使用内存映射文件。然后，您可以将文件内容视为一个非常大的字节数组，操作系统根据需要管理将数据导入内存（并释放它）。

If your operating system supports it, consider using a memory mapped file. You can then treat the file contents as a very large array of bytes, with the operating system managing bringing the data into memory (and releasing it) as necessary.

这篇关于C ++从底部到顶部读取文件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！