/script_binding/lua/lua/lmem.h

 1/*
 2** $Id: lmem.h,v 1.31.1.1 2007/12/27 13:02:25 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 */ \
21		luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
22		luaM_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) \
31		cast(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