[NS3] force NS3 simulator advances when surf advances (when NS3 has no flows)

[simgrid.git] / src / surf / network_ns3.c

diff --git a/src/surf/network_ns3.c b/src/surf/network_ns3.c
index b9f2de5..61e9d07 100644 (file)
--- a/src/surf/network_ns3.c
+++ b/src/surf/network_ns3.c
@@ -417,20 +417,19 @@ static double ns3_share_resources(double min)
          surf_network_model->states.running_action_set;
 
        //get the first relevant value from the running_actions list
-       if (!xbt_swag_size(running_actions))
-       return -1.0;
+       if (!xbt_swag_size(running_actions) || min == 0.0)
+         return -1.0;
+       else
+        do {
+          ns3_simulator(min);
+          time_to_next_flow_completion = ns3_time() - surf_get_clock();
+        } while(time_to_next_flow_completion==0.0);
+
+       XBT_DEBUG("min       : %f",min);
+       XBT_DEBUG("ns3  time : %f",ns3_time());
+       XBT_DEBUG("surf time : %f",surf_get_clock());
+       XBT_DEBUG("Next completion %f :",time_to_next_flow_completion);
 
-       ns3_simulator(min);
-       time_to_next_flow_completion = ns3_time() - surf_get_clock();
-
-//     XBT_INFO("min       : %f",min);
-//     XBT_INFO("ns3  time : %f",ns3_time());
-//     XBT_INFO("surf time : %f",surf_get_clock());
-
-       xbt_assert(time_to_next_flow_completion,
-                         "Time to next flow completion not initialized!\n");
-
-       XBT_DEBUG("ns3_share_resources return %f",time_to_next_flow_completion);
        return time_to_next_flow_completion;
 }
 
@@ -445,8 +444,12 @@ static void ns3_update_actions_state(double now, double delta)
              surf_network_model->states.running_action_set;
 
          /* If there are no running flows, just return */
-         if (!xbt_swag_size(running_actions))
-               return;
+         if (!xbt_swag_size(running_actions)) {
+           while(ns3_time()<now) {
+             ns3_simulator(now-ns3_time());
+           }
+           return;
+         }
 
          xbt_dict_foreach(dict_socket,cursor,key,data){
            action = (surf_action_network_ns3_t)ns3_get_socket_action(data);