VPP API: Memory trace

if you plan to put a hash into shared memory, the key sum and key
equal functions MUST be set to constants such as KEY_FUNC_STRING,
KEY_FUNC_MEM, etc. -lvppinfra is PIC, which means that the process
which set up the hash won't have the same idea where the key sum and
key compare functions live in other processes.

Change-Id: Ib3b5963a0d2fb467b91e1f16274df66ac74009e9
Signed-off-by: Ole Troan <ot@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 27 insertions, 16 deletions

diff --git a/src/vlibmemory/memory_client.c b/src/vlibmemory/memory_client.c
index 9c8dcaa9d64..55ef0011cb7 100644
--- a/src/vlibmemory/memory_client.c
+++ b/src/vlibmemory/memory_client.c
@@ -105,6 +105,29 @@ vl_api_rx_thread_exit_t_handler (vl_api_rx_thread_exit_t * mp)
 }
 
 static void
+vl_api_name_and_crc_free (void)
+{
+  api_main_t *am = &api_main;
+  int i;
+  u8 **keys = 0;
+  hash_pair_t *hp;
+
+  if (!am->msg_index_by_name_and_crc)
+    return;
+
+  /* *INDENT-OFF* */
+  hash_foreach_pair (hp, am->msg_index_by_name_and_crc,
+      ({
+        vec_add1 (keys, (u8 *) hp->key);
+      }));
+  /* *INDENT-ON* */
+  for (i = 0; i < vec_len (keys); i++)
+    vec_free (keys[i]);
+  vec_free (keys);
+  hash_free (am->msg_index_by_name_and_crc);
+}
+
+static void
 vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp)
 {
   serialize_main_t _sm, *sm = &_sm;
@@ -119,21 +142,7 @@ vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp)
   am->my_registration = (vl_api_registration_t *) (uword) mp->handle;
 
   /* Clean out any previous hash table (unlikely) */
-  if (am->msg_index_by_name_and_crc)
-    {
-      int i;
-      u8 **keys = 0;
-      hash_pair_t *hp;
-      /* *INDENT-OFF* */
-      hash_foreach_pair (hp, am->msg_index_by_name_and_crc,
-      ({
-        vec_add1 (keys, (u8 *) hp->key);
-      }));
-      /* *INDENT-ON* */
-      for (i = 0; i < vec_len (keys); i++)
-	vec_free (keys[i]);
-      vec_free (keys);
-    }
+  vl_api_name_and_crc_free ();
 
   am->msg_index_by_name_and_crc = hash_create_string (0, sizeof (uword));
 
@@ -192,8 +201,8 @@ vl_client_connect (const char *name, int ctx_quota, int input_queue_size)
   oldheap = svm_push_data_heap (svm);
   vl_input_queue = svm_queue_init (input_queue_size, sizeof (uword),
 				   getpid (), 0);
-  pthread_mutex_unlock (&svm->mutex);
   svm_pop_heap (oldheap);
+  pthread_mutex_unlock (&svm->mutex);
 
   am->my_client_index = ~0;
   am->my_registration = 0;
@@ -317,6 +326,8 @@ vl_client_disconnect (void)
       vl_msg_api_handler ((void *) rp);
       break;
     }
+
+  vl_api_name_and_crc_free ();
   return 0;
 }