将C/C ++回调传递到Matlab引擎 [英] Passing C/C++ callbacks into the matlab engine
问题描述
我有一个C ++文件，
I have a C++ file that:
- 启动matlab引擎
- 调用
matlab_optimize()(一个在内部运行matlab优化器之一的已编译m文件) - 打印结果
- 停止引擎并退出
- starts the matlab engine
- calls
matlab_optimize()(a compiled m file that runs one of matlab optimizers internally) - prints the result
- stops the engine and quits
这很好.我现在想将第二行更改为
This works fine. I now want to change the second line into
- 致电
matlab_optimize(obj_fun)
obj_fun()是在我的C ++代码中定义的一个函数，它本身将回调到其他代码中.本质上，我希望matlab_optimize内部使用的matlab优化器将提供的函数指针用作目标函数.
Where obj_fun() is a function defined in my C++ code which itself will callback into other code. Essentially I want the matlab optimizer used internally in matlab_optimize to use my supplied function pointer as the objective function.
我不能只将obj_fun()编译为独立的mex文件，因为我希望它与启动Matlab引擎(驱动整个引擎)的c ++进程进行通信.
I cant just compile obj_fun() as a standalone mex file since I want it to communicate with the c++ process that starts the matlab engine (which drives the whole thing).
2009年的新闻组帖子似乎表明这是不可能的.然后再次使用Matlab C ++数学库工具箱似乎可以做到这一点.
A newsgroup post from 2009 seems to indicate this is not possible. Then again the Matlab C++ Math Library Toolbox does seem to be able to do this.
还可以在周围搜索该生成的代码段:
/*
* Register a function pointer as a MATLAB-callable function.
*/
extern void mexRegisterFunction(void);
这似乎正是我想要的，但文件来自2000年，而我在任何地方的Matlab文档中都找不到对该函数的引用.那么如何使用呢?
Which seems exactly what I want but the file is from 2000, and I find no reference to this function in the matlab docs anywhere. So how to use this?
推荐答案
我就此问题与Mathworks进行了联系，并设法使其全部正常运行.这个问题是将回调函数直接传递给Matlab的更广泛努力的一部分.
I contacted Mathworks about the issue and managed to get it all working. This question was part of a wider effort of being able to pass callbacks to Python functions directly to Matlab.
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