1 /* Copyright (c) 2013-2015. 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(const char* name)
25 if (links->find(name) == links->end())
27 return links->at(name);
29 /** @brief Returns the amount of links in the platform */
30 int LinkImpl::linksCount()
34 /** @brief Returns a list of all existing links */
35 LinkImpl** LinkImpl::linksList()
37 LinkImpl** res = xbt_new(LinkImpl*, (int)links->size());
39 for (auto kv : *links) {
45 /** @brief destructor of the static data */
46 void LinkImpl::linksExit()
48 for (auto kv : *links)
49 (kv.second)->destroy();
59 simgrid::surf::NetworkModel *surf_network_model = nullptr;
64 NetworkModel::~NetworkModel()
66 lmm_system_free(maxminSystem_);
67 xbt_heap_free(actionHeap_);
71 double NetworkModel::latencyFactor(double /*size*/) {
72 return sg_latency_factor;
75 double NetworkModel::bandwidthFactor(double /*size*/) {
76 return sg_bandwidth_factor;
79 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
83 double NetworkModel::nextOccuringEventFull(double now)
85 double minRes = Model::nextOccuringEventFull(now);
87 for(auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; it++) {
88 NetworkAction *action = static_cast<NetworkAction*>(&*it);
89 if (action->latency_ > 0)
90 minRes = (minRes < 0) ? action->latency_ : std::min(minRes, action->latency_);
93 XBT_DEBUG("Min of share resources %f", minRes);
102 LinkImpl::LinkImpl(simgrid::surf::NetworkModel* model, const char* name, lmm_constraint_t constraint)
103 : Resource(model, name, constraint), piface_(this)
106 if (strcmp(name,"__loopback__"))
107 xbt_assert(!LinkImpl::byName(name), "Link '%s' declared several times in the platform.", name);
110 bandwidth_.scale = 1;
112 links->insert({name, this});
113 XBT_DEBUG("Create link '%s'",name);
117 /** @brief use destroy() instead of this destructor */
118 LinkImpl::~LinkImpl()
120 xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
122 /** @brief Fire the required callbacks and destroy the object
124 * Don't delete directly a Link, call l->destroy() instead.
126 void LinkImpl::destroy()
128 if (!currentlyDestroying_) {
129 currentlyDestroying_ = true;
130 s4u::Link::onDestruction(this->piface_);
135 bool LinkImpl::isUsed()
137 return lmm_constraint_used(model()->getMaxminSystem(), constraint());
140 double LinkImpl::latency()
142 return latency_.peak * latency_.scale;
145 double LinkImpl::bandwidth()
147 return bandwidth_.peak * bandwidth_.scale;
150 int LinkImpl::sharingPolicy()
152 return lmm_constraint_sharing_policy(constraint());
155 void LinkImpl::turnOn()
159 s4u::Link::onStateChange(this->piface_);
162 void LinkImpl::turnOff()
166 s4u::Link::onStateChange(this->piface_);
169 void LinkImpl::setStateTrace(tmgr_trace_t trace)
171 xbt_assert(stateEvent_ == nullptr, "Cannot set a second state trace to Link %s", cname());
172 stateEvent_ = future_evt_set->add_trace(trace, this);
174 void LinkImpl::setBandwidthTrace(tmgr_trace_t trace)
176 xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth trace to Link %s", cname());
177 bandwidth_.event = future_evt_set->add_trace(trace, this);
179 void LinkImpl::setLatencyTrace(tmgr_trace_t trace)
181 xbt_assert(latency_.event == nullptr, "Cannot set a second latency trace to Link %s", cname());
182 latency_.event = future_evt_set->add_trace(trace, this);
190 void NetworkAction::setState(Action::State state)
192 Action::setState(state);
193 s4u::Link::onCommunicationStateChange(this);
196 /** @brief returns a list of all Links that this action is using */
197 std::list<LinkImpl*> NetworkAction::links()
199 std::list<LinkImpl*> retlist;
200 lmm_system_t sys = getModel()->getMaxminSystem();
201 int llen = lmm_get_number_of_cnst_from_var(sys, getVariable());
203 for (int i = 0; i < llen; i++) {
204 /* Beware of composite actions: ptasks put links and cpus together */
205 // extra pb: we cannot dynamic_cast from void*...
206 Resource* resource = static_cast<Resource*>(lmm_constraint_id(lmm_get_cnst_from_var(sys, getVariable(), i)));
207 LinkImpl* link = dynamic_cast<LinkImpl*>(resource);
209 retlist.push_back(link);
217 #endif /* NETWORK_INTERFACE_CPP_ */