src/surf/network_constant.cpp

   1 /* Copyright (c) 2013-2015. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "network_constant.hpp"
   8
   9 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network);
  10
  11 /*********
  12  * Model *
  13  *********/
  14 void surf_network_model_init_Constant()
  15 {
  16   xbt_assert(surf_network_model == NULL);
  17   surf_network_model = new simgrid::surf::NetworkConstantModel();
  18   xbt_dynar_push(all_existing_models, &surf_network_model);
  19
  20   routing_model_create(NULL);
  21
  22   simgrid::surf::on_link.connect([](sg_platf_link_cbarg_t link){
  23     xbt_die("There is no link in the Constant network model. "
  24         "Please remove any link from your platform (and switch to routing='None')");
  25   });
  26 }
  27
  28 namespace simgrid {
  29   namespace surf {
  30
  31     double NetworkConstantModel::next_occuring_event(double /*now*/)
  32     {
  33       NetworkConstantAction *action = NULL;
  34       double min = -1.0;
  35
  36       ActionList *actionSet = getRunningActionSet();
  37       for(ActionList::iterator it(actionSet->begin()), itend(actionSet->end())
  38           ; it != itend ; ++it) {
  39         action = static_cast<NetworkConstantAction*>(&*it);
  40         if (action->m_latency > 0 && (min < 0 || action->m_latency < min))
  41           min = action->m_latency;
  42       }
  43
  44       return min;
  45     }
  46
  47     void NetworkConstantModel::updateActionsState(double /*now*/, double delta)
  48     {
  49       NetworkConstantAction *action = NULL;
  50       ActionList *actionSet = getRunningActionSet();
  51       for(ActionList::iterator it(actionSet->begin()), itNext=it, itend(actionSet->end())
  52           ; it != itend ; it=itNext) {
  53         ++itNext;
  54         action = static_cast<NetworkConstantAction*>(&*it);
  55         if (action->m_latency > 0) {
  56           if (action->m_latency > delta) {
  57             double_update(&(action->m_latency), delta, sg_surf_precision);
  58           } else {
  59             action->m_latency = 0.0;
  60           }
  61         }
  62         action->updateRemains(action->getCost() * delta / action->m_latInit);
  63         if (action->getMaxDuration() != NO_MAX_DURATION)
  64           action->updateMaxDuration(delta);
  65
  66         if (action->getRemainsNoUpdate() <= 0) {
  67           action->finish();
  68           action->setState(SURF_ACTION_DONE);
  69         } else if ((action->getMaxDuration() != NO_MAX_DURATION)
  70             && (action->getMaxDuration() <= 0)) {
  71           action->finish();
  72           action->setState(SURF_ACTION_DONE);
  73         }
  74       }
  75     }
  76
  77     Action *NetworkConstantModel::communicate(NetCard *src, NetCard *dst,
  78         double size, double rate)
  79     {
  80       char *src_name = src->name();
  81       char *dst_name = dst->name();
  82
  83       XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
  84       NetworkConstantAction *action = new NetworkConstantAction(this, size, sg_latency_factor);
  85       XBT_OUT();
  86
  87       networkCommunicateCallbacks(action, src, dst, size, rate);
  88       return action;
  89     }
  90
  91     /**********
  92      * Action *
  93      **********/
  94
  95     int NetworkConstantAction::unref()
  96     {
  97       m_refcount--;
  98       if (!m_refcount) {
  99         if (action_hook.is_linked())
 100           p_stateSet->erase(p_stateSet->iterator_to(*this));
 101         delete this;
 102         return 1;
 103       }
 104       return 0;
 105     }
 106
 107     void NetworkConstantAction::cancel()
 108     {
 109       return;
 110     }
 111
 112   }
 113 }