Ejemplo n.º 1
0
int SLInsert(SortedListPtr list, void *newObj)
{
  node *p = list->base->next;
  // find the first item larger or equal to newObj
  while (p != list->base) {
    if (list->CF(newObj, p->data) != -1) {
      break;
    }
    p = p->next;
  }
  node *tmp = malloc(sizeof(node));
  if (tmp == NULL)
    return 0;
  // initialize a node
  tmp->refByItrCount = 0;
  tmp->data = newObj;
  // insert a node
  tmp->prev = p->prev;
  p->prev->next = tmp;
  tmp->next = p;
  p->prev = tmp;
  return 1;
}
Ejemplo n.º 2
0
int SLRemove(SortedListPtr list, void *newObj)
{
  node *p = list->base->next;
  // find the first item equal to newObj
  while (p != list->base) {
    if (list->CF(newObj, p->data) == 0) {
      break;
    }
    p = p->next;
  }
  // if not find an item equal to newObj
  if (p == list->base)
    return 0;
  p->next->prev = p->prev;
  p->prev->next = p->next;
  //if there is no iterator "pointing" to this item, free it.
  if (p->refByItrCount == 0) {
    list->DF(p->data);
    free(p);
  }
  p->next = NULL;
  p->prev = NULL;
  return 1;
}