c++ - 后台程序提供API供其它程序使用

Question

最近遇到了一个问题，就是我想写一个程序，我可以启动它，在后台运行，该程序可以提供函数接口做一些操作。然后其它程序可以通过包含后台程序的头文件，使用后台程序的函数。

想了好久不知道，该怎么做。求各位帮助啊。

Answer 1

It is recommended to refer to Inter-Process Communication (RPC)
However, it may not be possible to directly include the header file of the background program and use the functions of the background program

Answer 2

The simplest way is to redirect the standard input and standard output and control the background program through them.

http://stackoverflow.com/questions/2680174/redirect-stdin-in-c-program-to-another-process

Answer 3

The program started in the background is a service (a memory-resident process, A), and the subsequent program (called program B) and A can communicate in various ways;
After being able to communicate, all functions in A can be called at will (of course, through the protocol negotiated by both parties);
If you need to directly expose a function to the outside world, in fact, you need to publish this function as a service for other users to use;

Publish functions into services. Some middleware services do this, such as Tuxedo;

There are many ways to communicate between processes,
For example, pipes; shared memory, queues, etc.; refer to "UNIX Network Programming Volume 2" inter-process communication: http://www.me115.com/book/129.html

Perhaps your requirement is just a dynamic link library to package A's code into a dynamic library,
Expose the header file interface for B to use? In this way, there is only one process;

Answer 4

Extract the parts shared by the current background program and other programs into a dynamic library

Answer 5

webService,soap