Re: Lua from C

[Thomas Jericke <tjericke@...>]

On 12/17/2014 01:12 PM, Lev wrote:
> On Wed, 17 Dec 2014 12:39:21 +0100
> Thomas Jericke <tjericke@indel.ch> wrote:
>
>
> > Depends on the usecase. Normally I would call luaL_newstate only once.
> > And then run all the scripts in the same state. Now there is one
> > issue here, if your scripts use globals you need to ensure that you
> > don't have any conflicts.
> Thanks for the answer. Yes, I set global variables each time I call my
> scripts. Shall I call lua_settop(L, 0) before any stack operation, and then
> let the garbage collector do the right thing?
>
> Thanks again,
> Levente
Globals are not stored on the stack and therefore lua_settop(L, 0) won't 
clean any globals.
Calling lua_settop(L, 0) after running a script only removes any results 
returned by the previous script.
If you don't return any results from the scripts you can simply ignore 
them by setting nresults  of lua_pcall to zero.
--
Thomas