automerge commit

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2-netsec@55796 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils.c

@@ -907,3 +907,14 @@ void ast_enable_packet_fragmentation(int sock)
 #endif
 }
 
+AST_MUTEX_DEFINE_STATIC(fetchadd_m); /* used for all fetc&add ops */
+
+int ast_atomic_fetchadd_int_slow(volatile int *p, int v)
+{
+        int ret;
+        ast_mutex_lock(&fetchadd_m);
+        ret = *p;
+        *p += v;
+        ast_mutex_unlock(&fetchadd_m);
+        return ret;
+}