LXR syslinux/com32/lua/src/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
  50