From 3964cfe4b13a71557c87e781fd011502ab50b4b5 Mon Sep 17 00:00:00 2001
From: Lucas Schnorr <Lucas.Schnorr@imag.fr>
Date: Thu, 8 Sep 2011 10:17:39 +0200
Subject: [PATCH] [NS3] force NS3 simulator advances when surf advances (when
 NS3 has no flows)

---
 src/surf/network_ns3.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/surf/network_ns3.c b/src/surf/network_ns3.c
index 86c1aa1388..61e9d07514 100644
--- a/src/surf/network_ns3.c
+++ b/src/surf/network_ns3.c
@@ -444,8 +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);
-- 
2.20.1