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_);
76 double NetworkModel::latencyFactor(double /*size*/) {
77 return sg_latency_factor;
80 double NetworkModel::bandwidthFactor(double /*size*/) {
81 return sg_bandwidth_factor;
84 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
88 double NetworkModel::nextOccuringEventFull(double now)
90 double minRes = Model::nextOccuringEventFull(now);
92 for (auto it(getRunningActionSet()->begin()); it != getRunningActionSet()->end(); it++) {
93 NetworkAction *action = static_cast<NetworkAction*>(&*it);
94 if (action->latency_ > 0)
95 minRes = (minRes < 0) ? action->latency_ : std::min(minRes, action->latency_);
98 XBT_DEBUG("Min of share resources %f", minRes);
107 LinkImpl::LinkImpl(simgrid::surf::NetworkModel* model, const std::string& name, lmm_constraint_t constraint)
108 : Resource(model, name, constraint), piface_(this)
111 if (name != "__loopback__")
112 xbt_assert(not LinkImpl::byName(name), "Link '%s' declared several times in the platform.", name.c_str());
115 bandwidth_.scale = 1;
117 links->insert({name, this});
118 XBT_DEBUG("Create link '%s'", name.c_str());
121 /** @brief use destroy() instead of this destructor */
122 LinkImpl::~LinkImpl()
124 xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
126 /** @brief Fire the required callbacks and destroy the object
128 * Don't delete directly a Link, call l->destroy() instead.
130 void LinkImpl::destroy()
132 if (not currentlyDestroying_) {
133 currentlyDestroying_ = true;
134 s4u::Link::onDestruction(this->piface_);
139 bool LinkImpl::isUsed()
141 return lmm_constraint_used(model()->getMaxminSystem(), constraint());
144 double LinkImpl::latency()
146 return latency_.peak * latency_.scale;
149 double LinkImpl::bandwidth()
151 return bandwidth_.peak * bandwidth_.scale;
154 int LinkImpl::sharingPolicy()
156 return lmm_constraint_sharing_policy(constraint());
159 void LinkImpl::turnOn()
163 s4u::Link::onStateChange(this->piface_);
166 void LinkImpl::turnOff()
170 s4u::Link::onStateChange(this->piface_);
173 void LinkImpl::setStateTrace(tmgr_trace_t trace)
175 xbt_assert(stateEvent_ == nullptr, "Cannot set a second state trace to Link %s", getCname());
176 stateEvent_ = future_evt_set->add_trace(trace, this);
178 void LinkImpl::setBandwidthTrace(tmgr_trace_t trace)
180 xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth trace to Link %s", getCname());
181 bandwidth_.event = future_evt_set->add_trace(trace, this);
183 void LinkImpl::setLatencyTrace(tmgr_trace_t trace)
185 xbt_assert(latency_.event == nullptr, "Cannot set a second latency trace to Link %s", getCname());
186 latency_.event = future_evt_set->add_trace(trace, this);
194 void NetworkAction::setState(Action::State state)
196 Action::setState(state);
197 s4u::Link::onCommunicationStateChange(this);
200 /** @brief returns a list of all Links that this action is using */
201 std::list<LinkImpl*> NetworkAction::links()
203 std::list<LinkImpl*> retlist;
204 lmm_system_t sys = getModel()->getMaxminSystem();
205 int llen = lmm_get_number_of_cnst_from_var(sys, getVariable());
207 for (int i = 0; i < llen; i++) {
208 /* Beware of composite actions: ptasks put links and cpus together */
209 // extra pb: we cannot dynamic_cast from void*...
210 Resource* resource = static_cast<Resource*>(lmm_constraint_id(lmm_get_cnst_from_var(sys, getVariable(), i)));
211 LinkImpl* link = dynamic_cast<LinkImpl*>(resource);
213 retlist.push_back(link);
221 #endif /* NETWORK_INTERFACE_CPP_ */