| 217 | |
| 218 | |
| 219 | static int stackinuse (lua_State *L) { |
| 220 | CallInfo *ci; |
| 221 | StkId lim = L->top; |
| 222 | for (ci = L->ci; ci != NULL; ci = ci->previous) { |
| 223 | if (lim < ci->top) lim = ci->top; |
| 224 | } |
| 225 | lua_assert(lim <= L->stack_last); |
| 226 | return cast_int(lim - L->stack) + 1; /* part of stack in use */ |
| 227 | } |
| 228 | |
| 229 | |
| 230 | void luaD_shrinkstack (lua_State *L) { |