build: retain dpdk_mlx_default setting for ci script

[vpp.git] / src / svm / message_queue.c

diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c
index 5c04b19..2880645 100644 (file)
--- a/src/svm/message_queue.c
+++ b/src/svm/message_queue.c
@@ -166,11 +166,20 @@ svm_msg_q_attach (svm_msg_q_t *mq, void *smq_base)
   clib_spinlock_init (&mq->q.lock);
 }
 
+void
+svm_msg_q_cleanup (svm_msg_q_t *mq)
+{
+  vec_free (mq->rings);
+  clib_spinlock_free (&mq->q.lock);
+  if (mq->q.evtfd != -1)
+    close (mq->q.evtfd);
+}
+
 void
 svm_msg_q_free (svm_msg_q_t * mq)
 {
+  svm_msg_q_cleanup (mq);
   clib_mem_free (mq->q.shr);
-  clib_spinlock_free (&mq->q.lock);
   clib_mem_free (mq);
 }
 
@@ -234,8 +243,7 @@ svm_msg_q_lock_and_alloc_msg_w_ring (svm_msg_q_t * mq, u32 ring_index,
     {
       if (svm_msg_q_try_lock (mq))
        return -1;
-      if (PREDICT_FALSE (svm_msg_q_is_full (mq)
-                        || svm_msg_q_ring_is_full (mq, ring_index)))
+      if (PREDICT_FALSE (svm_msg_q_or_ring_is_full (mq, ring_index)))
        {
          svm_msg_q_unlock (mq);
          return -2;
@@ -245,9 +253,8 @@ svm_msg_q_lock_and_alloc_msg_w_ring (svm_msg_q_t * mq, u32 ring_index,
   else
     {
       svm_msg_q_lock (mq);
-      while (svm_msg_q_is_full (mq)
-            || svm_msg_q_ring_is_full (mq, ring_index))
-       svm_msg_q_wait_prod (mq);
+      while (svm_msg_q_or_ring_is_full (mq, ring_index))
+       svm_msg_q_or_ring_wait_prod (mq, ring_index);
       *msg = svm_msg_q_alloc_msg_w_ring (mq, ring_index);
     }
   return 0;
@@ -482,7 +489,7 @@ int
 svm_msg_q_alloc_eventfd (svm_msg_q_t *mq)
 {
   int fd;
-  if ((fd = eventfd (0, EFD_NONBLOCK)) < 0)
+  if ((fd = eventfd (0, 0)) < 0)
     return -1;
   svm_msg_q_set_eventfd (mq, fd);
   return 0;
@@ -559,6 +566,35 @@ svm_msg_q_wait_prod (svm_msg_q_t *mq)
   return 0;
 }
 
+int
+svm_msg_q_or_ring_wait_prod (svm_msg_q_t *mq, u32 ring_index)
+{
+  if (mq->q.evtfd == -1)
+    {
+      while (svm_msg_q_or_ring_is_full (mq, ring_index))
+       pthread_cond_wait (&mq->q.shr->condvar, &mq->q.shr->mutex);
+    }
+  else
+    {
+      u64 buf;
+      int rv;
+
+      while (svm_msg_q_or_ring_is_full (mq, ring_index))
+       {
+         while ((rv = read (mq->q.evtfd, &buf, sizeof (buf))) < 0)
+           {
+             if (errno != EAGAIN)
+               {
+                 clib_unix_warning ("read error");
+                 return rv;
+               }
+           }
+       }
+    }
+
+  return 0;
+}
+
 int
 svm_msg_q_timedwait (svm_msg_q_t *mq, double timeout)
 {