-/*
- * 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_ */
