lmem.h File Reference

#include <stddef.h>
#include "llimits.h"
#include "lua.h"

Go to the source code of this file.

Macros
#define	MEMERRMSG   "not enough memory"
#define	luaM_reallocv(L, b, on, n, e)
#define	luaM_freemem(L, b, s)   luaM_realloc_(L, (b), (s), 0)
#define	luaM_free(L, b)   luaM_realloc_(L, (b), sizeof(*(b)), 0)
#define	luaM_freearray(L, b, n, t)   luaM_reallocv(L, (b), n, 0, sizeof(t))
#define	luaM_malloc(L, t)   luaM_realloc_(L, NULL, 0, (t))
#define	luaM_new(L, t)   cast(t *, luaM_malloc(L, sizeof(t)))
#define	luaM_newvector(L, n, t)    cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
#define	luaM_growvector(L, v, nelems, size, t, limit, e)
#define	luaM_reallocvector(L, v, oldn, n, t)    ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))

Functions
LUAI_FUNC void *	luaM_realloc_ (lua_State *L, void *block, size_t oldsize, size_t size)
LUAI_FUNC void *	luaM_toobig (lua_State *L)
LUAI_FUNC void *	luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elem, int limit, const char *errormsg)

Macro Definition Documentation

luaM_free

#define luaM_free	(		L,
			b )   luaM_realloc_(L, (b), sizeof(*(b)), 0)

Definition at line 25 of file lua-5.1.5/src/lmem.h.

Referenced by freeupval(), luaC_upvdeccount(), luaE_freeCI(), luaE_freethread(), luaE_shrinkCI(), luaF_close(), luaF_freeproto(), luaF_freeupval(), and luaH_free().

luaM_freearray

#define luaM_freearray	(		L,
			b,
			n,
			t )   luaM_reallocv(L, (b), n, 0, sizeof(t))

Definition at line 26 of file lua-5.1.5/src/lmem.h.

Referenced by close_state(), close_state(), close_state(), close_state(), freehash(), freestack(), freestack(), freestack(), freestack(), luaD_protectedparser(), luaD_reallocstack(), luaF_freeproto(), luaH_free(), luaH_resize(), luaH_resize(), luaS_resize(), and resize().

luaM_freemem

#define luaM_freemem	(		L,
			b,
			s )   luaM_realloc_(L, (b), (s), 0)

Definition at line 24 of file lua-5.1.5/src/lmem.h.

Referenced by freeLclosure(), freeobj(), freeobj(), freeobj(), freeobj(), luaE_freethread(), and luaF_freeclosure().

luaM_growvector

#define luaM_growvector	(		L,
			v,
			nelems,
			size,
			t,
			limit,
			e )

Value:

          if ((nelems)+1 > (size)) \
            ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))

Definition at line 33 of file lua-5.1.5/src/lmem.h.

#define luaM_growvector(L,v,nelems,size,t,limit,e) \
          if ((nelems)+1 > (size)) \
            ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))

Referenced by addk(), addk(), addk(), addk(), addprototype(), addprototype(), addprototype(), allocupvalue(), indexupvalue(), luaK_code(), luaK_code(), luaK_code(), luaK_code(), new_localvar(), new_localvar(), new_localvar(), newlabelentry(), newlabelentry(), newlabelentry(), newupvalue(), newupvalue(), pushclosure(), registerlocalvar(), registerlocalvar(), registerlocalvar(), registerlocalvar(), and savelineinfo().

luaM_malloc

#define luaM_malloc	(		L,
			t )   luaM_realloc_(L, NULL, 0, (t))

Definition at line 28 of file lua-5.1.5/src/lmem.h.

Referenced by luaE_newthread(), luaF_newCclosure(), luaF_newLclosure(), luaS_newudata(), and newlstr().

luaM_new

#define luaM_new	(		L,
			t )   cast(t *, luaM_malloc(L, sizeof(t)))

Definition at line 29 of file lua-5.1.5/src/lmem.h.

Referenced by luaE_extendCI(), luaF_findupval(), luaF_initupvals(), luaF_newproto(), luaF_newupval(), and luaH_new().

luaM_newvector

#define luaM_newvector	(		L,
			n,
			t )    cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))

Definition at line 30 of file lua-5.1.5/src/lmem.h.

#define luaM_newvector(L,n,t) \
        cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))

Referenced by combine(), LoadCode(), LoadCode(), LoadCode(), LoadConstants(), LoadConstants(), LoadConstants(), LoadDebug(), LoadDebug(), LoadDebug(), LoadProtos(), LoadUpvalues(), LoadUpvalues(), luaS_init(), luaS_resize(), setnodevector(), setnodevector(), setnodevector(), setnodevector(), stack_init(), stack_init(), stack_init(), and stack_init().

luaM_reallocv

#define luaM_reallocv	(		L,
			b,
			on,
			n,
			e )

Value:

    ((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
        luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
        luaM_toobig(L))

Definition at line 19 of file lua-5.1.5/src/lmem.h.

#define luaM_reallocv(L,b,on,n,e) \
    ((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
        luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
        luaM_toobig(L))

Referenced by luaM_growaux_(), and luaM_growaux_().

luaM_reallocvector

#define luaM_reallocvector	(		L,
			v,
			oldn,
			n,
			t )    ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))

Definition at line 37 of file lua-5.1.5/src/lmem.h.

#define luaM_reallocvector(L, v,oldn,n,t) \
   ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))

Referenced by close_func(), close_func(), close_func(), luaD_reallocCI(), luaD_reallocstack(), luaD_reallocstack(), luaH_resize(), luaH_resize(), luaH_resize(), luaS_resize(), luaS_resize(), resize(), setarrayvector(), setarrayvector(), and setarrayvector().

MEMERRMSG

#define MEMERRMSG   "not enough memory"

Definition at line 16 of file lua-5.1.5/src/lmem.h.

Referenced by f_luaopen(), luaD_seterrorobj(), and luaS_init().

Function Documentation

luaM_growaux_()

LUAI_FUNC void * luaM_growaux_	(	lua_State *	L,
		void *	block,
		int *	size,
		size_t	size_elem,
		int	limit,
		const char *	errormsg )

Definition at line 46 of file lua-5.1.5/src/lmem.c.

                                                      {
  void *newblock;
  int newsize;
  if (*size >= limit/2) {  /* cannot double it? */
    if (*size >= limit)  /* cannot grow even a little? */
      luaG_runerror(L, errormsg);
    newsize = limit;  /* still have at least one free place */
  }
  else {
    newsize = (*size)*2;
    if (newsize < MINSIZEARRAY)
      newsize = MINSIZEARRAY;  /* minimum size */
  }
  newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
  *size = newsize;  /* update only when everything else is OK */
  return newblock;
}

luaM_realloc_()

LUAI_FUNC void * luaM_realloc_	(	lua_State *	L,
		void *	block,
		size_t	oldsize,
		size_t	size )

Definition at line 76 of file lua-5.1.5/src/lmem.c.

                                                                            {
  global_State *g = G(L);
  lua_assert((osize == 0) == (block == NULL));
  block = (*g->frealloc)(g->ud, block, osize, nsize);
  if (block == NULL && nsize > 0)
    luaD_throw(L, LUA_ERRMEM);
  lua_assert((nsize == 0) == (block == NULL));
  g->totalbytes = (g->totalbytes - osize) + nsize;
  return block;
}

luaM_toobig()

LUAI_FUNC void * luaM_toobig

(

lua_State *

L

)

Definition at line 66 of file lua-5.1.5/src/lmem.c.

                                 {
  luaG_runerror(L, "memory allocation error: block too big");
  return NULL;  /* to avoid warnings */
}