/**
* Delete the list (including its elements).
*/
void list_delete (list_t l) {
for (element_t e = l->head, n; e != NULL; e = n) {
n = e->next;
list_delete_element (l, e);
}
free (l);
}
int32_t event_unsubscribe(struct event *const event, const event_id_t id)
{
/* get byte and bit number of the given event in the event mask */
const uint8_t position = id >> 3;
const uint8_t mask = 1 << (id & 0x7);
const struct event *current;
uint8_t i;
ASSERT(event && (id < EVENT_MAX_AMOUNT));
if (!(event->mask[position] & mask)) {
return ERR_NO_CHANGE; /* Already unsubscribed */
}
event->mask[position] &= ~mask;
/* Check if there are more subscribers */
for ((current = (const struct event *)list_get_head(&events)); current;
current = (const struct event *)list_get_next_element(current)) {
if (current->mask[position] & mask) {
break;
}
}
if (!current) {
subscribed[position] &= ~mask;
}
/* Remove event from the list. Can be unsave, document it! */
for (i = 0; i < ARRAY_SIZE(event->mask); i++) {
if (event->mask[i]) {
return ERR_NONE;
}
}
list_delete_element(&events, event);
return ERR_NONE;
}
