1/*
2** State and stack handling.
3** Copyright (C) 2005-2021 Mike Pall. See Copyright Notice in luajit.h
4*/
5
6#ifndef _LJ_STATE_H
7#define _LJ_STATE_H
8
9#include "lj_obj.h"
10
11#define incr_top(L) \
12 (++L->top >= tvref(L->maxstack) && (lj_state_growstack1(L), 0))
13
14#define savestack(L, p) ((char *)(p) - mref(L->stack, char))
15#define restorestack(L, n) ((TValue *)(mref(L->stack, char) + (n)))
16
17LJ_FUNC void lj_state_relimitstack(lua_State *L);
18LJ_FUNC void lj_state_shrinkstack(lua_State *L, MSize used);
19LJ_FUNCA void LJ_FASTCALL lj_state_growstack(lua_State *L, MSize need);
20LJ_FUNC void LJ_FASTCALL lj_state_growstack1(lua_State *L);
21
22static LJ_AINLINE void lj_state_checkstack(lua_State *L, MSize need)
23{
24 if ((mref(L->maxstack, char) - (char *)L->top) <=
25 (ptrdiff_t)need*(ptrdiff_t)sizeof(TValue))
26 lj_state_growstack(L, need);
27}
28
29LJ_FUNC lua_State *lj_state_new(lua_State *L);
30LJ_FUNC void LJ_FASTCALL lj_state_free(global_State *g, lua_State *L);
31#if LJ_64 && !LJ_GC64 && !(defined(LUAJIT_USE_VALGRIND) && defined(LUAJIT_USE_SYSMALLOC))
32LJ_FUNC lua_State *lj_state_newstate(lua_Alloc f, void *ud);
33#endif
34
35#define LJ_ALLOCF_INTERNAL ((lua_Alloc)(void *)(uintptr_t)(1237<<4))
36
37#endif
38