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-rw-r--r--src/lj_state.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/lj_state.h b/src/lj_state.h
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1/*
2** State and stack handling.
3** Copyright (C) 2005-2009 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 >= L->maxstack && (lj_state_growstack1(L), 0))
13
14#define savestack(L, p) ((char *)(p) - (char *)L->stack)
15#define restorestack(L, n) ((TValue *)((char *)L->stack + (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_state_growstack(lua_State *L, MSize need);
20LJ_FUNCA void lj_state_growstack1(lua_State *L);
21
22static LJ_AINLINE void lj_state_checkstack(lua_State *L, MSize need)
23{
24 if ((MSize)((char *)L->maxstack-(char *)L->top) <= need*(MSize)sizeof(TValue))
25 lj_state_growstack(L, need);
26}
27
28LJ_FUNC lua_State *lj_state_new(lua_State *L);
29LJ_FUNC void LJ_FASTCALL lj_state_free(global_State *g, lua_State *L);
30
31#endif