1 /* 2 ** $Id$ 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