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Reset last_cycle to 0 if queue gets empty

This commit is contained in:
Tatsuhiro Tsujikawa 2015-08-15 01:08:20 +09:00
parent 8ce8b2af46
commit 73b77964ef
1 changed files with 9 additions and 1 deletions
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10
lib/nghttp2_session.c
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@ -2038,6 +2038,11 @@ nghttp2_session_pop_next_ob_item(nghttp2_session *session) {
!nghttp2_pq_empty(&session->ob_da_pq)) {
item = nghttp2_pq_top(&session->ob_da_pq);
nghttp2_pq_pop(&session->ob_da_pq);
if (nghttp2_pq_empty(&session->ob_da_pq)) {
session->last_cycle = 0;
}
item->queued = 0;
return item;
}
@ -2158,7 +2163,10 @@ static void session_outbound_item_schedule(nghttp2_session *session,
/* We pretend to ignore overflow given that the value range of
item->cycle, which is uint64_t. nghttp2 won't explode even when
overflow occurs, there might be some disturbance of priority. */
overflow occurs, there might be some disturbance of priority. We
also reset session->last_cycle to 0, when there is no DATA frame
to send (queue is empty), so the possibility of overflow is
generally very small. */
item->cycle = session->last_cycle + delta;
}