1/*	$NetBSD$	*/
2
3/*
4** Id: lmem.h,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp
5** Interface to Memory Manager
6** See Copyright Notice in lua.h
7*/
8
9#ifndef lmem_h
10#define lmem_h
11
12
13#include <stddef.h>
14
15#include "llimits.h"
16#include "lua.h"
17
18#define MEMERRMSG	"not enough memory"
19
20
21#define luaM_reallocv(L,b,on,n,e) \
22	((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
23		luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
24		luaM_toobig(L))
25
26#define luaM_freemem(L, b, s)	luaM_realloc_(L, (b), (s), 0)
27#define luaM_free(L, b)		luaM_realloc_(L, (b), sizeof(*(b)), 0)
28#define luaM_freearray(L, b, n, t)   luaM_reallocv(L, (b), n, 0, sizeof(t))
29
30#define luaM_malloc(L,t)	luaM_realloc_(L, NULL, 0, (t))
31#define luaM_new(L,t)		cast(t *, luaM_malloc(L, sizeof(t)))
32#define luaM_newvector(L,n,t) \
33		cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
34
35#define luaM_growvector(L,v,nelems,size,t,limit,e) \
36          if ((nelems)+1 > (size)) \
37            ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
38
39#define luaM_reallocvector(L, v,oldn,n,t) \
40   ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
41
42
43LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
44                                                          size_t size);
45LUAI_FUNC void *luaM_toobig (lua_State *L);
46LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
47                               size_t size_elem, int limit,
48                               const char *errormsg);
49
50#endif
51
52