1 /* $NetBSD: lmem.h,v 1.1.1.1 2010/10/31 11:16:57 mbalmer Exp $ */ 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 43 LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, 44 size_t size); 45 LUAI_FUNC void *luaM_toobig (lua_State *L); 46 LUAI_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