Use lua_State as local variable in C function call, but not to load instructions each time

[Huang Lin <hlpurify@...>]

Hi there,

 

I use lua in this way in my C program.

 

int getPrompt (char* output)
{
        lua_State *L = lua_open();  /* create state */

        if (luaL_loadfile(L, "test.lua") || lua_pcall(L, 0, 0, 0))
        {

        }
        /// other lua logic to get output
        lua_close(L);
}

By using a local lua_State, the C program can begin the LUA logic from a fresh environment. This is also helpful when the C function, getPrompt, was run in multithread environment that doesn't require LUA related data to be shared/exchanged between threads.

 

But it is expensive to load the LUA instructions each time when I just want a local and fresh LUA runtime environment.

 

Is it possible to load/compile the LUA scripts once, put the result in the memory, and let the local lua_State(an independent lua universes) use it?

 

Thanks,

Huang Lin