api 和 abi

http://blog.csdn.net/dutysmart/article/details/7097586

       api 是应用程序和操作系统之间的接口，凡是符合该api标准的应用程序都可以在支持该api的操作系统上编译通过。

       abi 是二进制级别的接口，规定了二进制文件的格式、内容、装载/卸载程序的要求、函数调用时的参数传递规则、寄存器、堆栈的使用。

       如果操作系统都支持该api，但是机器的体系结构不同即他们的abi不同，那么在一个机器上生成的二进制代码是不可以在另外一台机器上面运行成功的，可能因为函数调用的参数传递规则不同或者其他由abi定义的行为产生的差异性。

       其实关键的是abi定义了运行时的兼容性问题，这个问题是api无法解决的。api所能解决的是静态状态下的兼容性问题。

以下摘自encyclopedia of PCMAGZINE

Definition of: API
(Application Programming Interface) A language and message format used by an application program to communicate with the operating system or some other control program such as a database management system (DBMS) or communications protocol. APIs are implemented by writing function calls in the program, which provide the linkage to the required subroutine for execution. Thus, an API implies that some program module is available in the computer to perform the operation or that it must be linked into the existing program to perform the tasks.

Definition of ABI

(Application Binary Interface) A specification for a specific hardware platform combined with the operating system. It is one step beyond the application program interface (API), which defines the calls from the application to the operating system. The ABI defines the API plus the machine language for a particular CPU family. An API does not ensure runtime compatibility, but an ABI does, because it defines the machine language, or runtime, format.

<script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script>

阅读(313) | 评论(0) | 转发(0) |

0

上一篇：正确理解***评论日本的一句话

下一篇：ImageMagick

相关热门文章

• test123
• 编写安全代码——小心有符号数...
• 使用openssl api进行加密解密...
• 一段自己打印自己的c程序...
• sql relay的c++接口

• linux dhcp peizhi roc
• 关于Unix文件的软链接
• 求教这个命令什么意思，我是新...
• sed -e "/grep/d" 是什么意思...
• 谁能够帮我解决LINUX 2.6 10...

给主人留下些什么吧！~~

评论热议