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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 | ||
41 | LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, | |
42 | size_t size); | |
43 | LUAI_FUNC void *luaM_toobig (lua_State *L); | |
44 | LUAI_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 |