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unqueue_matching: Add max_depth argument

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Look only at the last `max_depth` items on the queue, at most.
This commit is contained in:
Michael Cook
2020-10-24 09:50:00 -04:00
committed by Michael Cook
parent 67e190960f
commit ade37fea82
4 changed files with 53 additions and 15 deletions
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openair2/PHY_INTERFACE/queue.c
+7 -1
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@@ -113,7 +113,7 @@ void *unqueue(queue_t *q)
return item;
}
void *unqueue_matching(queue_t *q, queue_matcher_t *matcher, void *wanted)
void *unqueue_matching(queue_t *q, size_t max_depth, queue_matcher_t *matcher, void *wanted)
{
if (pthread_mutex_lock(&q->mutex) != 0)
{
@@ -125,6 +125,12 @@ void *unqueue_matching(queue_t *q, queue_matcher_t *matcher, void *wanted)
size_t endi = q->write_index;
for (size_t i = 0; i < q->num_items; i++)
{
if (max_depth == 0)
{
break;
}
--max_depth;
endi = (endi + MAX_QUEUE_SIZE - 1) % MAX_QUEUE_SIZE;
void *candidate = q->items[endi];
if (matcher(wanted, candidate))