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Merge branch 'master' of github.com:mquinson/simgrid
[simgrid.git] / src / surf / network_cm02.cpp
index 1858cfd..1f07518 100644 (file)
@@ -9,6 +9,7 @@
 #include "network_cm02.hpp"
 #include "maxmin_private.hpp"
 #include "simgrid/sg_config.h"
+#include "src/instr/instr_private.h" // TRACE_is_enabled(). FIXME: remove by subscribing tracing to the surf signals
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
 
@@ -20,21 +21,6 @@ double sg_weight_S_parameter = 0.0;     /* default value; can be set by model or
 double sg_tcp_gamma = 0.0;
 int sg_network_crosstraffic = 0;
 
-/*************
- * CallBacks *
- *************/
-
-void net_define_callbacks(void)
-{
-  /* Figuring out the network links */
-  sg_platf_link_add_cb(netlink_parse_init);
-  sg_platf_postparse_add_cb(net_add_traces);
-}
-
-/*********
- * Model *
- *********/
-
 /************************************************************************/
 /* New model based on optimizations discussed during Pedro Velho's thesis*/
 /************************************************************************/
@@ -54,16 +40,13 @@ void surf_network_model_init_LegrandVelho(void)
   if (surf_network_model)
     return;
 
+  simgrid::surf::on_link.connect(netlink_parse_init);
   surf_network_model = new simgrid::surf::NetworkCm02Model();
-  net_define_callbacks();
-  simgrid::surf::Model *model = surf_network_model;
-  xbt_dynar_push(all_existing_models, &model);
-
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",
-                            13.01);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",
-                            0.97);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 20537);
+  xbt_dynar_push(all_existing_models, &surf_network_model);
+
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",      13.01);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",     0.97);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S",         20537);
 }
 
 /***************************************************************************/
@@ -83,13 +66,13 @@ void surf_network_model_init_CM02(void)
   if (surf_network_model)
     return;
 
+  simgrid::surf::on_link.connect(netlink_parse_init);
   surf_network_model = new simgrid::surf::NetworkCm02Model();
   xbt_dynar_push(all_existing_models, &surf_network_model);
-  net_define_callbacks();
 
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 1.0);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",   1.0);
   xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 1.0);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 0.0);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S",         0.0);
 }
 
 /***************************************************************************/
@@ -107,15 +90,16 @@ void surf_network_model_init_Reno(void)
   if (surf_network_model)
     return;
 
+  simgrid::surf::on_link.connect(netlink_parse_init);
   surf_network_model = new simgrid::surf::NetworkCm02Model();
   xbt_dynar_push(all_existing_models, &surf_network_model);
-  net_define_callbacks();
+
   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
   surf_network_model->f_networkSolve = lagrange_solve;
 
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 0.92);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",     10.4);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",    0.92);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S",         8775);
 }
 
 
@@ -124,15 +108,16 @@ void surf_network_model_init_Reno2(void)
   if (surf_network_model)
     return;
 
+  simgrid::surf::on_link.connect(netlink_parse_init);
   surf_network_model = new simgrid::surf::NetworkCm02Model();
   xbt_dynar_push(all_existing_models, &surf_network_model);
-  net_define_callbacks();
+
   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp, func_reno2_fpi);
   surf_network_model->f_networkSolve = lagrange_solve;
 
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 0.92);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",    10.4);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",   0.92);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S",        8775);
 }
 
 void surf_network_model_init_Vegas(void)
@@ -140,26 +125,26 @@ void surf_network_model_init_Vegas(void)
   if (surf_network_model)
     return;
 
+  simgrid::surf::on_link.connect(netlink_parse_init);
   surf_network_model = new simgrid::surf::NetworkCm02Model();
   xbt_dynar_push(all_existing_models, &surf_network_model);
-  net_define_callbacks();
+
   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp, func_vegas_fpi);
   surf_network_model->f_networkSolve = lagrange_solve;
 
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor", 10.4);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor", 0.92);
-  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S", 8775);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/latency_factor",    10.4);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/bandwidth_factor",   0.92);
+  xbt_cfg_setdefault_double(_sg_cfg_set, "network/weight_S",        8775);
 }
 
 namespace simgrid {
 namespace surf {
 
 NetworkCm02Model::NetworkCm02Model()
-       :NetworkModel()
+  :NetworkModel()
 {
   char *optim = xbt_cfg_get_string(_sg_cfg_set, "network/optim");
-  int select =
-      xbt_cfg_get_boolean(_sg_cfg_set, "network/maxmin_selective_update");
+  int select = xbt_cfg_get_boolean(_sg_cfg_set, "network/maxmin_selective_update");
 
   if (!strcmp(optim, "Full")) {
     p_updateMechanism = UM_FULL;
@@ -167,47 +152,40 @@ NetworkCm02Model::NetworkCm02Model()
   } else if (!strcmp(optim, "Lazy")) {
     p_updateMechanism = UM_LAZY;
     m_selectiveUpdate = 1;
-    xbt_assert((select == 1)
-               ||
-               (xbt_cfg_is_default_value
-                (_sg_cfg_set, "network/maxmin_selective_update")),
+    xbt_assert((select == 1) || (xbt_cfg_is_default_value(_sg_cfg_set, "network/maxmin_selective_update")),
                "Disabling selective update while using the lazy update mechanism is dumb!");
   } else {
     xbt_die("Unsupported optimization (%s) for this model", optim);
   }
 
   if (!p_maxminSystem)
-       p_maxminSystem = lmm_system_new(m_selectiveUpdate);
+    p_maxminSystem = lmm_system_new(m_selectiveUpdate);
 
   routing_model_create(createLink("__loopback__",
-                                     498000000, NULL, 0.000015, NULL,
-                                     SURF_RESOURCE_ON, NULL,
-                                     SURF_LINK_FATPIPE, NULL));
+                                498000000, NULL, 0.000015, NULL,
+                                NULL,
+                                SURF_LINK_FATPIPE, NULL));
 
   if (p_updateMechanism == UM_LAZY) {
-       p_actionHeap = xbt_heap_new(8, NULL);
-       xbt_heap_set_update_callback(p_actionHeap, surf_action_lmm_update_index_heap);
-       p_modifiedSet = new ActionLmmList();
-       p_maxminSystem->keep_track = p_modifiedSet;
+  p_actionHeap = xbt_heap_new(8, NULL);
+  xbt_heap_set_update_callback(p_actionHeap, surf_action_lmm_update_index_heap);
+  p_modifiedSet = new ActionLmmList();
+  p_maxminSystem->keep_track = p_modifiedSet;
   }
 }
 
 Link* NetworkCm02Model::createLink(const char *name,
-                                 double bw_initial,
-                                 tmgr_trace_t bw_trace,
-                                 double lat_initial,
-                                 tmgr_trace_t lat_trace,
-                                 e_surf_resource_state_t state_initial,
-                                 tmgr_trace_t state_trace,
-                                 e_surf_link_sharing_policy_t policy,
-                                 xbt_dict_t properties)
+    double bw_initial, tmgr_trace_t bw_trace,
+    double lat_initial, tmgr_trace_t lat_trace,
+    tmgr_trace_t state_trace,
+    e_surf_link_sharing_policy_t policy, xbt_dict_t properties)
 {
   xbt_assert(NULL == Link::byName(name),
              "Link '%s' declared several times in the platform",
              name);
 
-  Link* link = new NetworkCm02Link(this, name, properties, p_maxminSystem, sg_bandwidth_factor * bw_initial, history,
-                                            state_initial, state_trace, bw_initial, bw_trace, lat_initial, lat_trace, policy);
+  Link* link = new NetworkCm02Link(this, name, properties, p_maxminSystem, sg_bandwidth_factor * bw_initial,
+                     state_trace, bw_initial, bw_trace, lat_initial, lat_trace, policy);
   Link::onCreation(link);
   return link;
 }
@@ -221,11 +199,9 @@ void NetworkCm02Model::updateActionsStateLazy(double now, double /*delta*/)
     XBT_DEBUG("Something happened to action %p", action);
     if (TRACE_is_enabled()) {
       int n = lmm_get_number_of_cnst_from_var(p_maxminSystem, action->getVariable());
-      int i;
-      for (i = 0; i < n; i++){
-        lmm_constraint_t constraint = lmm_get_cnst_from_var(p_maxminSystem,
-                                                            action->getVariable(),
-                                                            i);
+
+      for (int i = 0; i < n; i++){
+        lmm_constraint_t constraint = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i);
         NetworkCm02Link *link = static_cast<NetworkCm02Link*>(lmm_constraint_id(constraint));
         TRACE_surf_link_set_utilization(link->getName(),
                                         action->getCategory(),
@@ -270,7 +246,7 @@ void NetworkCm02Model::updateActionsStateFull(double now, double delta)
 
   for(ActionList::iterator it(running_actions->begin()), itNext=it, itend(running_actions->end())
      ; it != itend ; it=itNext) {
-       ++itNext;
+  ++itNext;
 
     action = static_cast<NetworkCm02Action*> (&*it);
     XBT_DEBUG("Something happened to action %p", action);
@@ -289,11 +265,9 @@ void NetworkCm02Model::updateActionsStateFull(double now, double delta)
       }
       if (TRACE_is_enabled()) {
         int n = lmm_get_number_of_cnst_from_var(p_maxminSystem, action->getVariable());
-        int i;
-        for (i = 0; i < n; i++){
-          lmm_constraint_t constraint = lmm_get_cnst_from_var(p_maxminSystem,
-                                                            action->getVariable(),
-                                                            i);
+        for (int i = 0; i < n; i++){
+          lmm_constraint_t constraint = lmm_get_cnst_from_var(p_maxminSystem, action->getVariable(), i);
+
           NetworkCm02Link* link = static_cast<NetworkCm02Link*>(lmm_constraint_id(constraint));
           TRACE_surf_link_set_utilization(link->getName(),
                                         action->getCategory(),
@@ -305,8 +279,7 @@ void NetworkCm02Model::updateActionsStateFull(double now, double delta)
                                         now - action->getLastUpdate());
         }
       }
-      if (!lmm_get_number_of_cnst_from_var
-          (p_maxminSystem, action->getVariable())) {
+      if (!lmm_get_number_of_cnst_from_var (p_maxminSystem, action->getVariable())) {
         /* There is actually no link used, hence an infinite bandwidth.
          * This happens often when using models like vivaldi.
          * In such case, just make sure that the action completes immediately.
@@ -330,47 +303,37 @@ void NetworkCm02Model::updateActionsStateFull(double now, double delta)
       action->gapRemove();
     }
   }
-  return;
 }
 
 Action *NetworkCm02Model::communicate(NetCard *src, NetCard *dst,
                                                 double size, double rate)
 {
-  unsigned int i;
-  void *_link;
-  NetworkCm02Link *link;
   int failed = 0;
   NetworkCm02Action *action = NULL;
   double bandwidth_bound;
   double latency = 0.0;
-  xbt_dynar_t back_route = NULL;
+  std::vector<Link*> * back_route = NULL;
   int constraints_per_variable = 0;
 
-  xbt_dynar_t route = xbt_dynar_new(sizeof(NetCard*), NULL);
+  std::vector<Link*> *route = new std::vector<Link*>();
 
-  XBT_IN("(%s,%s,%g,%g)", src->getName(), dst->getName(), size, rate);
+  XBT_IN("(%s,%s,%g,%g)", src->name(), dst->name(), size, rate);
 
-  routing_platf->getRouteAndLatency(src, dst, &route, &latency);
-  xbt_assert(!xbt_dynar_is_empty(route) || latency,
-             "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
-             src->getName(), dst->getName());
+  routing_platf->getRouteAndLatency(src, dst, route, &latency);
+  xbt_assert(! route->empty() || latency,
+             "You're trying to send data from %s to %s but there is no connecting path between these two hosts.",
+             src->name(), dst->name());
 
-  xbt_dynar_foreach(route, i, _link) {
-       link = static_cast<NetworkCm02Link*>(_link);
-    if (link->getState() == SURF_RESOURCE_OFF) {
+  for (auto link: *route)
+    if (link->isOff())
       failed = 1;
-      break;
-    }
-  }
+
   if (sg_network_crosstraffic == 1) {
-         routing_platf->getRouteAndLatency(dst, src, &back_route, NULL);
-    xbt_dynar_foreach(back_route, i, _link) {
-      link = static_cast<NetworkCm02Link*>(_link);
-      if (link->getState() == SURF_RESOURCE_OFF) {
+    back_route = new std::vector<Link*>();
+    routing_platf->getRouteAndLatency(dst, src, back_route, NULL);
+    for (auto link: *back_route)
+      if (link->isOff())
         failed = 1;
-        break;
-      }
-    }
   }
 
   action = new NetworkCm02Action(this, size, failed);
@@ -387,45 +350,37 @@ Action *NetworkCm02Model::communicate(NetCard *src, NetCard *dst,
   }
 
   bandwidth_bound = -1.0;
-  if (sg_weight_S_parameter > 0) {
-    xbt_dynar_foreach(route, i, _link) {
-      link = static_cast<NetworkCm02Link*>(_link);
+  if (sg_weight_S_parameter > 0)
+    for (auto link : *route)
       action->m_weight += sg_weight_S_parameter / link->getBandwidth();
-    }
-  }
-  xbt_dynar_foreach(route, i, _link) {
-       link = static_cast<NetworkCm02Link*>(_link);
+
+  for (auto link : *route) {
     double bb = bandwidthFactor(size) * link->getBandwidth();
-    bandwidth_bound =
-        (bandwidth_bound < 0.0) ? bb : std::min(bandwidth_bound, bb);
+    bandwidth_bound = (bandwidth_bound < 0.0) ? bb : std::min(bandwidth_bound, bb);
   }
 
   action->m_latCurrent = action->m_latency;
   action->m_latency *= latencyFactor(size);
   action->m_rate = bandwidthConstraint(action->m_rate, bandwidth_bound, size);
   if (m_haveGap) {
-    xbt_assert(!xbt_dynar_is_empty(route),
+    xbt_assert(! route->empty(),
                "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
 
-    link = *static_cast<NetworkCm02Link **>(xbt_dynar_get_ptr(route, 0));
-    gapAppend(size, link, action);
-    XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
-              action, src->getName(), dst->getName(), action->m_senderGap,
-              action->m_latency);
+    gapAppend(size, route->at(0), action);
+    XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)", action, src->name(), dst->name(), action->m_senderGap, action->m_latency);
   }
 
-  constraints_per_variable = xbt_dynar_length(route);
+  constraints_per_variable = route->size();
   if (back_route != NULL)
-    constraints_per_variable += xbt_dynar_length(back_route);
+    constraints_per_variable += back_route->size();
 
   if (action->m_latency > 0) {
     action->p_variable = lmm_variable_new(p_maxminSystem, action, 0.0, -1.0,
                          constraints_per_variable);
     if (p_updateMechanism == UM_LAZY) {
       // add to the heap the event when the latency is payed
-      XBT_DEBUG("Added action (%p) one latency event at date %f", action,
-                action->m_latency + action->m_lastUpdate);
-      action->heapInsert(p_actionHeap, action->m_latency + action->m_lastUpdate, xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
+      XBT_DEBUG("Added action (%p) one latency event at date %f", action, action->m_latency + action->m_lastUpdate);
+      action->heapInsert(p_actionHeap, action->m_latency + action->m_lastUpdate, route->empty() ? NORMAL : LATENCY);
     }
   } else
     action->p_variable = lmm_variable_new(p_maxminSystem, action, 1.0, -1.0, constraints_per_variable);
@@ -436,177 +391,112 @@ Action *NetworkCm02Model::communicate(NetCard *src, NetCard *dst,
     lmm_update_variable_bound(p_maxminSystem, action->getVariable(), (action->m_latCurrent > 0) ? std::min(action->m_rate, sg_tcp_gamma / (2.0 * action->m_latCurrent)) : action->m_rate);
   }
 
-  xbt_dynar_foreach(route, i, _link) {
-       link = static_cast<NetworkCm02Link*>(_link);
+  for (auto link: *route)
     lmm_expand(p_maxminSystem, link->getConstraint(), action->getVariable(), 1.0);
-  }
 
   if (sg_network_crosstraffic == 1) {
     XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
-    xbt_dynar_foreach(back_route, i, _link) {
-      link = static_cast<NetworkCm02Link*>(_link);
+    for (auto link : *back_route)
       lmm_expand(p_maxminSystem, link->getConstraint(), action->getVariable(), .05);
-    }
+     
+    //Change concurrency_share here, if you want that cross-traffic is included in the SURF concurrency
+    //(You would also have to change lmm_element_concurrency())
+    //lmm_variable_concurrency_share_set(action->getVariable(),2);
   }
 
-  xbt_dynar_free(&route);
+  delete route;
   XBT_OUT();
 
   networkCommunicateCallbacks(action, src, dst, size, rate);
   return action;
 }
 
-void NetworkCm02Model::addTraces(){
-  xbt_dict_cursor_t cursor = NULL;
-  char *trace_name, *elm;
-
-  static int called = 0;
-  if (called)
-    return;
-  called = 1;
-
-  /* connect all traces relative to network */
-  xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
-    tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
-    NetworkCm02Link *link = static_cast<NetworkCm02Link*>( Link::byName(elm) );
-
-    xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
-               trace_name, elm);
-    xbt_assert(trace,
-               "Cannot connect trace %s to link %s: trace undefined",
-               trace_name, elm);
-
-    link->p_stateEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
-  }
-
-  xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
-    tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
-    NetworkCm02Link *link = static_cast<NetworkCm02Link*>( Link::byName(elm) );
-
-    xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
-               trace_name, elm);
-    xbt_assert(trace,
-               "Cannot connect trace %s to link %s: trace undefined",
-               trace_name, elm);
-
-    link->p_speed.event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
-  }
-
-  xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
-    tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
-    NetworkCm02Link *link = static_cast<NetworkCm02Link*>(Link::byName(elm));;
-
-    xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
-               trace_name, elm);
-    xbt_assert(trace,
-               "Cannot connect trace %s to link %s: trace undefined",
-               trace_name, elm);
-
-    link->p_latEvent = tmgr_history_add_trace(history, trace, 0.0, 0, link);
-  }
-}
-
 /************
  * Resource *
  ************/
 NetworkCm02Link::NetworkCm02Link(NetworkCm02Model *model, const char *name, xbt_dict_t props,
-                                  lmm_system_t system,
-                                  double constraint_value,
-                                  tmgr_history_t history,
-                                  e_surf_resource_state_t state_init,
-                                  tmgr_trace_t state_trace,
-                                  double metric_peak,
-                                  tmgr_trace_t metric_trace,
-                                  double lat_initial,
-                                  tmgr_trace_t lat_trace,
-                                  e_surf_link_sharing_policy_t policy)
-: Link(model, name, props, lmm_constraint_new(system, this, constraint_value), history, state_trace)
+    lmm_system_t system,
+    double constraint_value,
+    tmgr_trace_t state_trace,
+    double bw_peak, tmgr_trace_t bw_trace,
+    double lat_initial, tmgr_trace_t lat_trace,
+    e_surf_link_sharing_policy_t policy)
+: Link(model, name, props, lmm_constraint_new(system, this, constraint_value), state_trace)
 {
-  setState(state_init);
-
-  p_speed.scale = 1.0;
-  p_speed.peak = metric_peak;
-  if (metric_trace)
-    p_speed.event = tmgr_history_add_trace(history, metric_trace, 0.0, 0, this);
+  m_bandwidth.scale = 1.0;
+  m_bandwidth.peak = bw_peak;
+  if (bw_trace)
+    m_bandwidth.event = future_evt_set->add_trace(bw_trace, 0.0, this);
   else
-    p_speed.event = NULL;
+    m_bandwidth.event = NULL;
 
-  m_latCurrent = lat_initial;
+  m_latency.scale = 1.0;
+  m_latency.peak = lat_initial;
   if (lat_trace)
-       p_latEvent = tmgr_history_add_trace(history, lat_trace, 0.0, 0, this);
+    m_latency.event = future_evt_set->add_trace(lat_trace, 0.0, this);
 
   if (policy == SURF_LINK_FATPIPE)
-       lmm_constraint_shared(getConstraint());
+    lmm_constraint_shared(getConstraint());
 }
 
 
 
-void NetworkCm02Link::updateState(tmgr_trace_event_t event_type,
-                                      double value, double date)
+void NetworkCm02Link::apply_event(tmgr_trace_iterator_t triggered, double value)
 {
-  /*   printf("[" "%g" "] Asking to update network card \"%s\" with value " */
-  /*     "%g" " for event %p\n", surf_get_clock(), nw_link->name, */
-  /*     value, event_type); */
-
-  if (event_type == p_speed.event) {
-    updateBandwidth(value, date);
-    if (tmgr_trace_event_free(event_type))
-      p_speed.event = NULL;
-  } else if (event_type == p_latEvent) {
-    updateLatency(value, date);
-    if (tmgr_trace_event_free(event_type))
-      p_latEvent = NULL;
-  } else if (event_type == p_stateEvent) {
+
+  /* Find out which of my iterators was triggered, and react accordingly */
+  if (triggered == m_bandwidth.event) {
+    updateBandwidth(value);
+    tmgr_trace_event_unref(&m_bandwidth.event);
+
+  } else if (triggered == m_latency.event) {
+    updateLatency(value);
+    tmgr_trace_event_unref(&m_latency.event);
+
+  } else if (triggered == m_stateEvent) {
     if (value > 0)
-      setState(SURF_RESOURCE_ON);
+      turnOn();
     else {
-      lmm_constraint_t cnst = getConstraint();
       lmm_variable_t var = NULL;
       lmm_element_t elem = NULL;
+      double now = surf_get_clock();
 
-      setState(SURF_RESOURCE_OFF);
-      while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
+      turnOff();
+      while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), getConstraint(), &elem))) {
         Action *action = static_cast<Action*>( lmm_variable_id(var) );
 
         if (action->getState() == SURF_ACTION_RUNNING ||
             action->getState() == SURF_ACTION_READY) {
-          action->setFinishTime(date);
+          action->setFinishTime(now);
           action->setState(SURF_ACTION_FAILED);
         }
       }
     }
-    if (tmgr_trace_event_free(event_type))
-      p_stateEvent = NULL;
+    tmgr_trace_event_unref(&m_stateEvent);
   } else {
-    XBT_CRITICAL("Unknown event ! \n");
-    xbt_abort();
+    xbt_die("Unknown event!\n");
   }
 
-  XBT_DEBUG
-      ("There were a resource state event, need to update actions related to the constraint (%p)",
+  XBT_DEBUG("There was a resource state event, need to update actions related to the constraint (%p)",
        getConstraint());
-  return;
 }
 
-void NetworkCm02Link::updateBandwidth(double value, double date){
-  double delta = sg_weight_S_parameter / value - sg_weight_S_parameter /
-                 (p_speed.peak * p_speed.scale);
-  lmm_variable_t var = NULL;
-  lmm_element_t elem = NULL;
-  lmm_element_t nextelem = NULL;
-  int numelem = 0;
+void NetworkCm02Link::updateBandwidth(double value) {
 
-  NetworkCm02Action *action = NULL;
+  m_bandwidth.peak = value;
+
+  lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
+      sg_bandwidth_factor * (m_bandwidth.peak * m_bandwidth.scale));
+  TRACE_surf_link_set_bandwidth(surf_get_clock(), getName(), sg_bandwidth_factor * m_bandwidth.peak * m_bandwidth.scale);
 
-  p_speed.peak = value;
-  lmm_update_constraint_bound(getModel()->getMaxminSystem(),
-                              getConstraint(),
-                              sg_bandwidth_factor *
-                              (p_speed.peak * p_speed.scale));
-  TRACE_surf_link_set_bandwidth(date, getName(), sg_bandwidth_factor * p_speed.peak * p_speed.scale);
   if (sg_weight_S_parameter > 0) {
+    double delta = sg_weight_S_parameter / value - sg_weight_S_parameter / (m_bandwidth.peak * m_bandwidth.scale);
+
+    lmm_variable_t var;
+    lmm_element_t elem = NULL, nextelem = NULL;
+    int numelem = 0;
     while ((var = lmm_get_var_from_cnst_safe(getModel()->getMaxminSystem(), getConstraint(), &elem, &nextelem, &numelem))) {
-      action = (NetworkCm02Action*) lmm_variable_id(var);
+      NetworkCm02Action *action = (NetworkCm02Action*) lmm_variable_id(var);
       action->m_weight += delta;
       if (!action->isSuspended())
         lmm_update_variable_weight(getModel()->getMaxminSystem(), action->getVariable(), action->m_weight);
@@ -614,17 +504,17 @@ void NetworkCm02Link::updateBandwidth(double value, double date){
   }
 }
 
-void NetworkCm02Link::updateLatency(double value, double date){
-  double delta = value - m_latCurrent;
+void NetworkCm02Link::updateLatency(double value){
+  double delta = value - m_latency.peak;
   lmm_variable_t var = NULL;
   lmm_element_t elem = NULL;
   lmm_element_t nextelem = NULL;
   int numelem = 0;
-  NetworkCm02Action *action = NULL;
 
-  m_latCurrent = value;
+  m_latency.peak = value;
+
   while ((var = lmm_get_var_from_cnst_safe(getModel()->getMaxminSystem(), getConstraint(), &elem, &nextelem, &numelem))) {
-    action = (NetworkCm02Action*) lmm_variable_id(var);
+    NetworkCm02Action *action = (NetworkCm02Action*) lmm_variable_id(var);
     action->m_latCurrent += delta;
     action->m_weight += delta;
     if (action->m_rate < 0)
@@ -636,8 +526,7 @@ void NetworkCm02Link::updateLatency(double value, double date){
       if (action->m_rate < sg_tcp_gamma / (2.0 * action->m_latCurrent)) {
         XBT_INFO("Flow is limited BYBANDWIDTH");
       } else {
-        XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
-                 action->m_latCurrent);
+        XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f", action->m_latCurrent);
       }
     }
     if (!action->isSuspended())