X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/773715423764e9f35aacb24b982b6b43598bd40e..8de466d0f03f18b22c6c36170b509d48a39fcd52:/src/surf/network_interface.cpp

diff --git a/src/surf/network_interface.cpp b/src/surf/network_interface.cpp
index 3e7130da4f..ac8dcb2b4d 100644
--- a/src/surf/network_interface.cpp
+++ b/src/surf/network_interface.cpp
@@ -1,59 +1,223 @@
-/*
- * network_interface.cpp
- *
- *  Created on: Nov 29, 2013
- *      Author: bedaride
- */
+/* Copyright (c) 2013-2018. The SimGrid Team. All rights reserved.          */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <algorithm>
+
 #include "network_interface.hpp"
-#include "simgrid/sg_config.h"
+#include "simgrid/sg_config.hpp"
 
 #ifndef NETWORK_INTERFACE_CPP_
 #define NETWORK_INTERFACE_CPP_
 
-extern "C" {
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
-                                "Logging specific to the SURF network module");
-}
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf, "Logging specific to the SURF network module");
 
-NetworkModelPtr surf_network_model = NULL;
+namespace simgrid {
+  namespace surf {
 
-xbt_dynar_t NetworkModel::getRoute(RoutingEdgePtr src, RoutingEdgePtr dst)
-{
-  xbt_dynar_t route = NULL;
-  routing_platf->getRouteAndLatency(src, dst, &route, NULL);
-  return route;
-}
+  /* List of links */
+  std::unordered_map<std::string, LinkImpl*>* LinkImpl::links = new std::unordered_map<std::string, LinkImpl*>();
 
-double NetworkModel::latencyFactor(double /*size*/) {
-  return sg_latency_factor;
-}
+  LinkImpl* LinkImpl::byName(std::string name)
+  {
+    auto link = links->find(name);
+    return link == links->end() ? nullptr : link->second;
+  }
+  /** @brief Returns the amount of links in the platform */
+  int LinkImpl::linksCount()
+  {
+    return links->size();
+  }
+  void LinkImpl::linksList(std::vector<s4u::Link*>* linkList)
+  {
+    for (auto const& kv : *links) {
+      linkList->push_back(&kv.second->piface_);
+    }
+  }
 
-double NetworkModel::bandwidthFactor(double /*size*/) {
-  return sg_bandwidth_factor;
+  /** @brief Returns a list of all existing links */
+  LinkImpl** LinkImpl::linksList()
+  {
+    LinkImpl** res = xbt_new(LinkImpl*, (int)links->size());
+    int i          = 0;
+    for (auto const& kv : *links) {
+      res[i] = kv.second;
+      i++;
+    }
+    return res;
+  }
+  /** @brief destructor of the static data */
+  void LinkImpl::linksExit()
+  {
+    for (auto const& kv : *links)
+      (kv.second)->destroy();
+    delete links;
+  }
+  }
 }
 
-double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
-  return rate;
-}
+/*********
+ * Model *
+ *********/
 
-bool NetworkLinkLmm::isUsed()
-{
-  return lmm_constraint_used(p_model->p_maxminSystem, p_constraint);
-}
+simgrid::surf::NetworkModel *surf_network_model = nullptr;
 
-double NetworkLink::getLatency()
-{
-  return m_latCurrent;
-}
+namespace simgrid {
+  namespace surf {
 
-double NetworkLinkLmm::getBandwidth()
-{
-  return p_power.peak * p_power.scale;
-}
+  /** Value of the command-line option 'network/TCP-gamma' -- see \ref options_model_network_gamma */
+  simgrid::config::Flag<double> NetworkModel::cfg_tcp_gamma(
+      {"network/TCP-gamma", "network/TCP_gamma"},
+      "Size of the biggest TCP window (cat /proc/sys/net/ipv4/tcp_[rw]mem for recv/send window; "
+      "Use the last given value, which is the max window size)",
+      4194304.0);
+
+  NetworkModel::~NetworkModel() = default;
+
+    double NetworkModel::latencyFactor(double /*size*/) {
+      return sg_latency_factor;
+    }
+
+    double NetworkModel::bandwidthFactor(double /*size*/) {
+      return sg_bandwidth_factor;
+    }
+
+    double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
+      return rate;
+    }
+
+    double NetworkModel::next_occuring_event_full(double now)
+    {
+      double minRes = Model::next_occuring_event_full(now);
+
+      for (kernel::resource::Action const& action : *get_running_action_set()) {
+        const NetworkAction& net_action = static_cast<const NetworkAction&>(action);
+        if (net_action.latency_ > 0)
+          minRes = (minRes < 0) ? net_action.latency_ : std::min(minRes, net_action.latency_);
+      }
+
+      XBT_DEBUG("Min of share resources %f", minRes);
+
+      return minRes;
+    }
+
+    /************
+     * Resource *
+     ************/
+
+    LinkImpl::LinkImpl(simgrid::surf::NetworkModel* model, const std::string& name, kernel::lmm::Constraint* constraint)
+        : Resource(model, name, constraint), piface_(this)
+    {
+
+      if (name != "__loopback__")
+        xbt_assert(not LinkImpl::byName(name), "Link '%s' declared several times in the platform.", name.c_str());
+
+      latency_.scale   = 1;
+      bandwidth_.scale = 1;
+
+      links->insert({name, this});
+      XBT_DEBUG("Create link '%s'", name.c_str());
+    }
+
+    /** @brief use destroy() instead of this destructor */
+    LinkImpl::~LinkImpl()
+    {
+      xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
+    }
+    /** @brief Fire the required callbacks and destroy the object
+     *
+     * Don't delete directly a Link, call l->destroy() instead.
+     */
+    void LinkImpl::destroy()
+    {
+      if (not currentlyDestroying_) {
+        currentlyDestroying_ = true;
+        s4u::Link::onDestruction(this->piface_);
+        delete this;
+      }
+    }
+
+    bool LinkImpl::is_used()
+    {
+      return get_model()->get_maxmin_system()->constraint_used(get_constraint());
+    }
+
+    double LinkImpl::latency()
+    {
+      return latency_.peak * latency_.scale;
+    }
+
+    double LinkImpl::bandwidth()
+    {
+      return bandwidth_.peak * bandwidth_.scale;
+    }
+
+    int LinkImpl::sharingPolicy()
+    {
+      return get_constraint()->get_sharing_policy();
+    }
+
+    void LinkImpl::turn_on()
+    {
+      if (is_off()) {
+        Resource::turn_on();
+        s4u::Link::onStateChange(this->piface_);
+      }
+    }
+    void LinkImpl::turn_off()
+    {
+      if (is_on()) {
+        Resource::turn_off();
+        s4u::Link::onStateChange(this->piface_);
+      }
+    }
+    void LinkImpl::setStateTrace(tmgr_trace_t trace)
+    {
+      xbt_assert(stateEvent_ == nullptr, "Cannot set a second state trace to Link %s", get_cname());
+      stateEvent_ = future_evt_set->add_trace(trace, this);
+    }
+    void LinkImpl::setBandwidthTrace(tmgr_trace_t trace)
+    {
+      xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth trace to Link %s", get_cname());
+      bandwidth_.event = future_evt_set->add_trace(trace, this);
+    }
+    void LinkImpl::setLatencyTrace(tmgr_trace_t trace)
+    {
+      xbt_assert(latency_.event == nullptr, "Cannot set a second latency trace to Link %s", get_cname());
+      latency_.event = future_evt_set->add_trace(trace, this);
+    }
+
+
+    /**********
+     * Action *
+     **********/
+
+    void NetworkAction::set_state(Action::State state)
+    {
+      Action::set_state(state);
+      s4u::Link::onCommunicationStateChange(this);
+    }
+
+    /** @brief returns a list of all Links that this action is using */
+    std::list<LinkImpl*> NetworkAction::links()
+    {
+      std::list<LinkImpl*> retlist;
+      int llen = get_variable()->get_number_of_constraint();
+
+      for (int i = 0; i < llen; i++) {
+        /* Beware of composite actions: ptasks put links and cpus together */
+        // extra pb: we cannot dynamic_cast from void*...
+        kernel::resource::Resource* resource =
+            static_cast<kernel::resource::Resource*>(get_variable()->get_constraint(i)->get_id());
+        LinkImpl* link     = dynamic_cast<LinkImpl*>(resource);
+        if (link != nullptr)
+          retlist.push_back(link);
+      }
 
-bool NetworkLinkLmm::isShared()
-{
-  return lmm_constraint_is_shared(p_constraint);
+      return retlist;
+    }
+  }
 }
 
 #endif /* NETWORK_INTERFACE_CPP_ */