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Root/lua/lmem.h

1/*
2** $Id: lmem.h,v 1.31 2005/04/25 19:24:10 roberto Exp $
3** Interface to Memory Manager
4** See Copyright Notice in lua.h
5*/
6
7#ifndef lmem_h
8#define lmem_h
9
10
11#include <stddef.h>
12
13#include "llimits.h"
14#include "lua.h"
15
16#define MEMERRMSG"not enough memory"
17
18
19#define luaM_reallocv(L,b,on,n,e) \
20((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ? /* +1 to avoid warnings */ \
21luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
22luaM_toobig(L))
23
24#define luaM_freemem(L, b, s)luaM_realloc_(L, (b), (s), 0)
25#define luaM_free(L, b)luaM_realloc_(L, (b), sizeof(*(b)), 0)
26#define luaM_freearray(L, b, n, t) luaM_reallocv(L, (b), n, 0, sizeof(t))
27
28#define luaM_malloc(L,t)luaM_realloc_(L, NULL, 0, (t))
29#define luaM_new(L,t)cast(t *, luaM_malloc(L, sizeof(t)))
30#define luaM_newvector(L,n,t) \
31cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
32
33#define luaM_growvector(L,v,nelems,size,t,limit,e) \
34 if ((nelems)+1 > (size)) \
35 ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
36
37#define luaM_reallocvector(L, v,oldn,n,t) \
38 ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
39
40
41LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
42 size_t size);
43LUAI_FUNC void *luaM_toobig (lua_State *L);
44LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
45 size_t size_elem, int limit,
46 const char *errormsg);
47
48#endif
49

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