NAME¶

m17n_object -

SYNOPSIS¶

void* m17n_object (int size, void(*)(void *) freer)

DESCRIPTION¶

@brief Allocate a managed object.
The m17n_object() function allocates a new managed object of
@b size bytes and sets its reference count to 1.  @b freer is the
function that is used to free the object when the reference count
becomes 0.  If @b freer is NULL, the object is freed by the free()
function.
The heading bytes of the allocated object is occupied by
#M17NObjectHead.  That area is reserved for the m17n library and
application programs should never touch it.
@par Return value:
This function returns a newly allocated object.
@par Errors:
This function never fails.   

Example:¶

typedef struct
{


  M17NObjectHead head;


  int mem1;


  char *mem2;
} MYStruct;
void
my_freer (void *obj)
{


  free (((MYStruct *) obj)->mem2);


  free (obj);
}
void
my_func (MText *mt, MSymbol key, int num, char *str)
{


  MYStruct *st = m17n_object (sizeof (MYStruct), my_freer);


  st->mem1 = num;


  st->mem2 = strdup (str);


  /* KEY must be a managing key.   */


  mtext_put_prop (mt, 0, mtext_len (mt), key, st);


  /* This sets the reference count of ST back to 1.  */


  m17n_object_unref (st);
}

COPYRIGHT¶

Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License <http://www.gnu.org/licenses/fdl.html>.