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-rw-r--r--src/svm/message_queue.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c
index 10266a8039c..b381173c70b 100644
--- a/src/svm/message_queue.c
+++ b/src/svm/message_queue.c
@@ -170,6 +170,7 @@ void
svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg)
{
svm_msg_q_ring_t *ring;
+ int need_signal;
ASSERT (vec_len (mq->rings) > msg->ring_index);
ring = &mq->rings[msg->ring_index];
@@ -183,7 +184,12 @@ svm_msg_q_free_msg (svm_msg_q_t * mq, svm_msg_q_msg_t * msg)
/* for now, expect messages to be processed in order */
ASSERT (0);
}
+
+ need_signal = ring->cursize == ring->nitems;
clib_atomic_fetch_sub (&ring->cursize, 1);
+
+ if (PREDICT_FALSE (need_signal))
+ svm_queue_send_signal (mq->q, 0);
}
static int