upiwin/src/gfxobj.c

#include <stdlib.h>
#include <string.h>
#include "gfxobj.h"

void _Go_init(PGFXOBJECT obj, UINT32 sig, UINT32 size)
{
  memset(obj, 0, sizeof(GFXOBJECT));
  obj->sig = sig;
  obj->size = size;
  obj->refcnt = 1;
}

void Go_unchain(PGFXOBJECT obj)
{
  if (!(obj->next || obj->prev))
	return;
  if (obj->next)
    obj->next->prev = obj->prev;
  if (obj->prev)
    obj->prev->next = obj->next;
  obj->prev = obj->next = NULL;
}

INT32 Go_addref(PGFXOBJECT obj)
{
  return ++(obj->refcnt);
}

INT32 Go_release(PGFXOBJECT obj)
{
  int rc = --(obj->refcnt);
  if (rc == 0)
  {
	if (obj->dtor)
	  (*(obj->dtor))(obj);
	free(obj);
  }
  return rc;
}