1 /* Copyright (c) 2013-2017. The SimGrid Team.
2 * All rights reserved. */
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. */
9 #include "network_interface.hpp"
10 #include "simgrid/sg_config.h"
12 #ifndef NETWORK_INTERFACE_CPP_
13 #define NETWORK_INTERFACE_CPP_
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf, "Logging specific to the SURF network module");
21 std::unordered_map<std::string, LinkImpl*>* LinkImpl::links = new std::unordered_map<std::string, LinkImpl*>();
23 LinkImpl* LinkImpl::byName(std::string name)
25 auto link = links->find(name);
26 return link == links->end() ? nullptr : link->second;
28 /** @brief Returns the amount of links in the platform */
29 int LinkImpl::linksCount()
33 void LinkImpl::linksList(std::vector<s4u::Link*>* linkList)
35 for (auto const& kv : *links) {
36 linkList->push_back(&kv.second->piface_);
40 /** @brief Returns a list of all existing links */
41 LinkImpl** LinkImpl::linksList()
43 LinkImpl** res = xbt_new(LinkImpl*, (int)links->size());
45 for (auto const& kv : *links) {
51 /** @brief destructor of the static data */
52 void LinkImpl::linksExit()
54 for (auto const& kv : *links)
55 (kv.second)->destroy();
65 simgrid::surf::NetworkModel *surf_network_model = nullptr;
70 NetworkModel::~NetworkModel()
72 lmm_system_free(maxminSystem_);
73 xbt_heap_free(actionHeap_);
77 double NetworkModel::latencyFactor(double /*size*/) {
78 return sg_latency_factor;
81 double NetworkModel::bandwidthFactor(double /*size*/) {
82 return sg_bandwidth_factor;
85 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
89 double NetworkModel::nextOccuringEventFull(double now)
91 double minRes = Model::nextOccuringEventFull(now);
93 for(auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; it++) {
94 NetworkAction *action = static_cast<NetworkAction*>(&*it);
95 if (action->latency_ > 0)
96 minRes = (minRes < 0) ? action->latency_ : std::min(minRes, action->latency_);
99 XBT_DEBUG("Min of share resources %f", minRes);
108 LinkImpl::LinkImpl(simgrid::surf::NetworkModel* model, const std::string& name, lmm_constraint_t constraint)
109 : Resource(model, name, constraint), piface_(this)
112 if (name != "__loopback__")
113 xbt_assert(not LinkImpl::byName(name), "Link '%s' declared several times in the platform.", name.c_str());
116 bandwidth_.scale = 1;
118 links->insert({name, this});
119 XBT_DEBUG("Create link '%s'", name.c_str());
122 /** @brief use destroy() instead of this destructor */
123 LinkImpl::~LinkImpl()
125 xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
127 /** @brief Fire the required callbacks and destroy the object
129 * Don't delete directly a Link, call l->destroy() instead.
131 void LinkImpl::destroy()
133 if (not currentlyDestroying_) {
134 currentlyDestroying_ = true;
135 s4u::Link::onDestruction(this->piface_);
140 bool LinkImpl::isUsed()
142 return lmm_constraint_used(model()->getMaxminSystem(), constraint());
145 double LinkImpl::latency()
147 return latency_.peak * latency_.scale;
150 double LinkImpl::bandwidth()
152 return bandwidth_.peak * bandwidth_.scale;
155 int LinkImpl::sharingPolicy()
157 return lmm_constraint_sharing_policy(constraint());
160 void LinkImpl::turnOn()
164 s4u::Link::onStateChange(this->piface_);
167 void LinkImpl::turnOff()
171 s4u::Link::onStateChange(this->piface_);
174 void LinkImpl::setStateTrace(tmgr_trace_t trace)
176 xbt_assert(stateEvent_ == nullptr, "Cannot set a second state trace to Link %s", getCname());
177 stateEvent_ = future_evt_set->add_trace(trace, this);
179 void LinkImpl::setBandwidthTrace(tmgr_trace_t trace)
181 xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth trace to Link %s", getCname());
182 bandwidth_.event = future_evt_set->add_trace(trace, this);
184 void LinkImpl::setLatencyTrace(tmgr_trace_t trace)
186 xbt_assert(latency_.event == nullptr, "Cannot set a second latency trace to Link %s", getCname());
187 latency_.event = future_evt_set->add_trace(trace, this);
195 void NetworkAction::setState(Action::State state)
197 Action::setState(state);
198 s4u::Link::onCommunicationStateChange(this);
201 /** @brief returns a list of all Links that this action is using */
202 std::list<LinkImpl*> NetworkAction::links()
204 std::list<LinkImpl*> retlist;
205 lmm_system_t sys = getModel()->getMaxminSystem();
206 int llen = lmm_get_number_of_cnst_from_var(sys, getVariable());
208 for (int i = 0; i < llen; i++) {
209 /* Beware of composite actions: ptasks put links and cpus together */
210 // extra pb: we cannot dynamic_cast from void*...
211 Resource* resource = static_cast<Resource*>(lmm_constraint_id(lmm_get_cnst_from_var(sys, getVariable(), i)));
212 LinkImpl* link = dynamic_cast<LinkImpl*>(resource);
214 retlist.push_back(link);
222 #endif /* NETWORK_INTERFACE_CPP_ */