X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fsvm%2Fmessage_queue.c;h=b381173c70b31082d0177700d51e6f20d2231113;hb=dd73bd321e2718dd9afced36dad53bd624af4f32;hp=6113450e7cbee53487956ee4c5f9bc29a7539ac6;hpb=1afa7afffad6e296a97556aa4c9482f4cd544074;p=vpp.git

diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c
index 6113450e7cb..b381173c70b 100644
--- a/src/svm/message_queue.c
+++ b/src/svm/message_queue.c
@@ -15,6 +15,7 @@
 
 #include <svm/message_queue.h>
 #include <vppinfra/mem.h>
+#include <vppinfra/format.h>
 #include <sys/eventfd.h>
 
 static inline svm_msg_q_ring_t *
@@ -169,6 +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];
@@ -182,7 +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
@@ -265,6 +272,19 @@ svm_msg_q_alloc_producer_eventfd (svm_msg_q_t * mq)
   return 0;
 }
 
+u8 *
+format_svm_msg_q (u8 * s, va_list * args)
+{
+  svm_msg_q_t *mq = va_arg (*args, svm_msg_q_t *);
+  s = format (s, " [Q:%d/%d]", mq->q->cursize, mq->q->maxsize);
+  for (u32 i = 0; i < vec_len (mq->rings); i++)
+    {
+      s = format (s, " [R%d:%d/%d]", i, mq->rings[i].cursize,
+		  mq->rings[i].nitems);
+    }
+  return s;
+}
+
 /*
  * fd.io coding-style-patch-verification: ON
  *