Re: Interrupting the Lua VM from C (Lua 3.1)

[David Jones <drj@...>]

On May 21, 2006, at 19:52, Cyril Zorin wrote:

> Hullo!
>
> Say I have two functions, one Lua function called MyLuaFunc, and a C 
> function called my_c_func(). Now, suppose that MyLuaFunc calls 
> my_c_func() -- is there a way, from inside my_c_func() to make it so 
> the Lua VM returns from MyLuaFunc right after my_c_func() is done? In 
> other words
>
> -- some code
> my_c_func()
> -- I want my_c_func() to tell the Lua VM to return from MyLuaFunc 
> right after my_c_func() returns
> -- more code
>
> Is there a way to do this?

Use setjmp in MyLuaFunc and longjmp in _c_func.  Can't say I recommend 
it though.  It would be simpler to just have _c_func return some value 
to MyLuaFunc that indicated that it wanted an immediate return to Lua.

David Jones