void nn_priolist_rm (struct nn_priolist *self, struct nn_pipe *pipe,
struct nn_priolist_data *data)
{
if (nn_list_item_isinlist (&data->item))
nn_list_erase (&self->slots [data->priority - 1].pipes, &data->item);
nn_list_item_term (&data->item);
}
void nn_priolist_rm (struct nn_priolist *self, struct nn_pipe *pipe,
struct nn_priolist_data *data)
{
struct nn_priolist_slot *slot;
struct nn_list_item *it;
/* Non-active pipes don't need any special processing. */
if (!nn_list_item_isinlist (&data->item)) {
nn_list_item_term (&data->item);
return;
}
/* If the pipe being removed is not current, we can simply erase it
from the list. */
slot = &self->slots [data->priority - 1];
if (slot->current != data) {
nn_list_erase (&slot->pipes, &data->item);
nn_list_item_term (&data->item);
return;
}
/* Advance the current pointer (with wrap-over). */
it = nn_list_erase (&slot->pipes, &data->item);
slot->current = nn_cont (it, struct nn_priolist_data, item);
nn_list_item_term (&data->item);
if (!slot->current) {
it = nn_list_begin (&slot->pipes);
slot->current = nn_cont (it, struct nn_priolist_data, item);
}
void nn_dist_rm (struct nn_dist *self, struct nn_pipe *pipe,
struct nn_dist_data *data)
{
if (nn_list_item_isinlist (&data->item)) {
--self->count;
nn_list_erase (&self->pipes, &data->item);
}
nn_list_item_term (&data->item);
}
static void nn_astream_terminating_closed (const struct nn_cp_sink **self,
struct nn_usock *usock)
{
struct nn_astream *astream;
astream = nn_cont (self, struct nn_astream, sink);
/* Ignore if I don't belong to the bstream. */
if (nn_list_item_isinlist (&astream->item))
nn_bstream_astream_closed (astream->bstream, astream);
nn_list_item_term (&astream->item);
nn_free (astream);
}
void nn_list_insert (struct nn_list *self, struct nn_list_item *item,
struct nn_list_item *it)
{
nn_assert (!nn_list_item_isinlist (item));
item->prev = it ? it->prev : self->last;
item->next = it;
if (item->prev)
item->prev->next = item;
if (item->next)
item->next->prev = item;
if (!self->first || self->first == it)
self->first = item;
if (!it)
self->last = item;
}
struct nn_list_item *nn_list_erase (struct nn_list *self,
struct nn_list_item *item)
{
struct nn_list_item *next;
nn_assert (nn_list_item_isinlist (item));
if (item->prev)
item->prev->next = item->next;
else
self->first = item->next;
if (item->next)
item->next->prev = item->prev;
else
self->last = item->prev;
next = item->next;
item->prev = NN_LIST_NOTINLIST;
item->next = NN_LIST_NOTINLIST;
return next;
}
void nn_list_item_term (struct nn_list_item *self)
{
nn_assert (!nn_list_item_isinlist (self));
}