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I think, Lua passes lua_State to hook function which you can get from stack target function arguments.

typedef void (*lua_Hook) (lua_State *L, lua_Debug *ar);

On Sun, Aug 21, 2022 at 04:30:03PM +0200, Bas Groothedde wrote:
> Hi list,
> Is there a way to monitor all function calls in Lua 5.1 (Lua functions and C functions) with access to their arguments and results? I know about lua_sethook, but according to the docs there is no access to arguments or results.
> It's on Windows and I can optionally detour any API function for this, its purpose is profiling code including the influence of input and output on execution times.
> Thank you.
> ~b