view src/lua/lmem.h @ 364:958a333f16e2

more progress.
author Robert McIntyre <rlm@mit.edu>
date Mon, 09 Apr 2012 11:03:33 -0500
parents 27763b933818
children
line wrap: on
line source
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 */
7 #ifndef lmem_h
8 #define lmem_h
11 #include <stddef.h>
13 #include "llimits.h"
14 #include "lua.h"
16 #define MEMERRMSG "not enough memory"
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))
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))
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)))
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)))
37 #define luaM_reallocvector(L, v,oldn,n,t) \
38 ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
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);
48 #endif