Function timer_del

dpdk/lib/timer/rte_timer.c:427–464

* del from list, lock if needed * timer must be in config state * timer must be in a list */

 * timer must be in a list
 */
static void
timer_del(struct rte_timer *tim, union rte_timer_status prev_status,
	  int local_is_locked, struct priv_timer *priv_timer)
{
	unsigned lcore_id = rte_lcore_id();
	unsigned prev_owner = prev_status.owner;
	int i;
	struct rte_timer *prev[MAX_SKIPLIST_DEPTH+1];

	/* if timer needs is pending another core, we need to lock the
	 * list; if it is on local core, we need to lock if we are not
	 * called from rte_timer_manage() */
	if (prev_owner != lcore_id || !local_is_locked)
		rte_spinlock_lock(&priv_timer[prev_owner].list_lock);

	/* save the lowest list entry into the expire field of the dummy hdr.
	 * NOTE: this is not atomic on 32-bit */
	if (tim == priv_timer[prev_owner].pending_head.sl_next[0])
		priv_timer[prev_owner].pending_head.expire =
				((tim->sl_next[0] == NULL) ? 0 : tim->sl_next[0]->expire);

	/* adjust pointers from previous entries to point past this */
	timer_get_prev_entries_for_node(tim, prev_owner, prev, priv_timer);
	for (i = priv_timer[prev_owner].curr_skiplist_depth - 1; i >= 0; i--) {
		if (prev[i]->sl_next[i] == tim)
			prev[i]->sl_next[i] = tim->sl_next[i];
	}

	/* in case we deleted last entry at a level, adjust down max level */
	for (i = priv_timer[prev_owner].curr_skiplist_depth - 1; i >= 0; i--)
		if (priv_timer[prev_owner].pending_head.sl_next[i] == NULL)
			priv_timer[prev_owner].curr_skiplist_depth --;
		else
			break;

	if (prev_owner != lcore_id || !local_is_locked)
		rte_spinlock_unlock(&priv_timer[prev_owner].list_lock);
}

/* Reset and start the timer associated with the timer handle (private func) */
static int