515 static int _copy_pool(lua_State *from, lua_State *to, LIBEVENT_THREAD *thr) {  in _copy_pool()  argument
517     mcp_pool_t *p = luaL_checkudata(from, -3, "mcp.pool");  in _copy_pool()
529     lua_pushvalue(from, -3); // dupe pool for referencing  in _copy_pool()
530     mcp_gobj_ref(from, &p->g); // pops obj copy  in _copy_pool()
534 static void _copy_config_table(lua_State *from, lua_State *to, LIBEVENT_THREAD *thr);
537 static void _copy_config_table(lua_State *from, lua_State *to, LIBEVENT_THREAD *thr) {  in _copy_config_table()  argument
538     int type = lua_type(from, -1);  in _copy_config_table()
540     luaL_checkstack(from, 4, "configuration error: table recursion too deep");  in _copy_config_table()
548             if (lua_getmetatable(from, -1) != 0) {  in _copy_config_table()
549                 lua_pushstring(from, "__name");  in _copy_config_table()
550                 if (lua_rawget(from, -2) != LUA_TNIL) {  in _copy_config_table()
551                     const char *name = lua_tostring(from, -1);  in _copy_config_table()
553                         _copy_pool(from, to, thr);  in _copy_config_table()
556                         mcp_ratelim_proxy_tbf(from, to);  in _copy_config_table()
560                 lua_pop(from, 2);  in _copy_config_table()
563                 proxy_lua_error(from, "unhandled userdata type in configuration table\n");  in _copy_config_table()
567             if (lua_isinteger(from, -1)) {  in _copy_config_table()
568                 lua_pushinteger(to, lua_tointeger(from, -1));  in _copy_config_table()
570                 lua_pushnumber(to, lua_tonumber(from, -1));  in _copy_config_table()
574             lua_pushlstring(to, lua_tostring(from, -1), lua_rawlen(from, -1));  in _copy_config_table()
577             lua_pushboolean(to, lua_toboolean(from, -1));  in _copy_config_table()
584             int t = lua_absindex(from, -1); // static index of table to copy.  in _copy_config_table()
586             lua_pushnil(from); // start iterator for main  in _copy_config_table()
587             while (lua_next(from, t) != 0) {  in _copy_config_table()
589                 int keytype = lua_type(from, -2);  in _copy_config_table()
598                         lua_pushlstring(to, lua_tostring(from, -2), lua_rawlen(from, -2));  in _copy_config_table()
601                         if (lua_isinteger(from, -2)) {  in _copy_config_table()
602                             lua_pushinteger(to, lua_tointeger(from, -2));  in _copy_config_table()
604                             lua_pushnumber(to, lua_tonumber(from, -2));  in _copy_config_table()
608 …                      proxy_lua_error(from, "configuration table keys must be strings or numbers");  in _copy_config_table()
613                 _copy_config_table(from, to, thr); // push next value.  in _copy_config_table()
615                 lua_pop(from, 1); // drop value, keep key.  in _copy_config_table()
621             proxy_lua_error(from, "unhandled data type in configuration table\n");  in _copy_config_table()