WiP

[oweals/gnunet.git] / src / util / container_multihashmap.c

diff --git a/src/util/container_multihashmap.c b/src/util/container_multihashmap.c
index 5b66442cb953ff98d911e0bb4c185274f743f79a..579573bdb89b7b7a27c6fcfcb9673a3911b085dc 100644 (file)
--- a/src/util/container_multihashmap.c
+++ b/src/util/container_multihashmap.c
@@ -130,6 +130,7 @@ static unsigned int
 idx_of (const struct GNUNET_CONTAINER_MultiHashMap *m,
         const GNUNET_HashCode * key)
 {
+  GNUNET_assert (m!=NULL);
   return (*(unsigned int *) key) % m->map_length;
 }
 
@@ -197,6 +198,7 @@ GNUNET_CONTAINER_multihashmap_iterate (const struct
   GNUNET_HashCode kc;
 
   count = 0;
+  GNUNET_assert(map != NULL);
   for (i = 0; i < map->map_length; i++)
     {
       n = map->map[i];
@@ -333,6 +335,36 @@ GNUNET_CONTAINER_multihashmap_contains (const struct
 }
 
 
+/**
+ * Check if the map contains the given value under the given
+ * key.
+ *
+ * @param map the map
+ * @param key the key to test if a value exists for it
+ * @param value value to test for
+ * @return GNUNET_YES if such a value exists,
+ *         GNUNET_NO if not
+ */
+int GNUNET_CONTAINER_multihashmap_contains_value (const struct
+                                                 GNUNET_CONTAINER_MultiHashMap
+                                                 *map,
+                                                 const GNUNET_HashCode * key,
+                                                 const void *value)
+{
+  struct MapEntry *e;
+
+  e = map->map[idx_of (map, key)];
+  while (e != NULL)
+    {
+      if ( (0 == memcmp (key, &e->key, sizeof (GNUNET_HashCode))) &&
+          (e->value == value) )
+        return GNUNET_YES;
+      e = e->next;
+    }
+  return GNUNET_NO;
+}
+
+
 /**
  * Grow the given map to a more appropriate size.
  *