Re: how to transfer Lua Function and function params between different Lua state?

[Declan White <deco.da.man@...>]

chuang <lichuang1982 <at> gmail.com> writes:

> 
> 
> I want to write a C module,when Lua call this module's spawn function,it 
create a new Lua state,and the new Lua state can call its Lua function,like 
this:
> 
> 
> require("qnode")
> 
> function test(a)
>   print("in test")
>   print(a)
> end
> 
> qnode.spawn(test, 100)
> 
> 
> but,when i review the Lua C API,seems there is no function to get the Lua 
function from the Lua stack.
> So,how can I achieve this  purpose?
> 
> 
> 
> 

Take a look at LuaLanes ( https://github.com/LuaLanes/lanes ); it has a few C 
functions to copy from Lua state to another.
(In fact, it may do exactly what you want your module to do: multiple Lua states 
in separate threads with simple communication).

There's also my deep copy function, which you can find on lua-users ( 
http://lua-users.org/wiki/CopyTable ); although it is Lua-only, so you'll have 
to find a way to convert it.

Regards,
Declan White.