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");
23 const char* sg_link_name(Link *link) {
24 return link->getName();
26 Link * sg_link_by_name(const char* name) {
27 return Link::byName(name);
30 int sg_link_is_shared(Link *link){
31 return link->sharingPolicy();
33 double sg_link_bandwidth(Link *link){
34 return link->bandwidth();
36 double sg_link_latency(Link *link){
37 return link->latency();
39 void* sg_link_data(Link *link) {
40 return link->getData();
42 void sg_link_data_set(Link *link,void *data) {
46 return Link::linksCount();
48 Link** sg_link_list() {
49 return Link::linksList();
64 std::unordered_map<std::string,Link *> *Link::links = new std::unordered_map<std::string,Link *>();
65 Link *Link::byName(const char* name) {
66 if (links->find(name) == links->end())
68 return links->at(name);
70 /** @brief Returns the amount of links in the platform */
71 int Link::linksCount() {
74 /** @brief Returns a list of all existing links */
75 Link **Link::linksList() {
76 Link **res = xbt_new(Link*, (int)links->size());
78 for (auto kv : *links) {
83 /** @brief destructor of the static data */
84 void Link::linksExit() {
85 for (auto kv : *links)
86 (kv.second)->destroy();
94 simgrid::xbt::signal<void(Link*)> Link::onCreation;
95 simgrid::xbt::signal<void(Link*)> Link::onDestruction;
96 simgrid::xbt::signal<void(Link*)> Link::onStateChange;
98 simgrid::xbt::signal<void(NetworkAction*, Action::State, Action::State)> networkActionStateChangedCallbacks;
99 simgrid::xbt::signal<void(NetworkAction*, s4u::Host* src, s4u::Host* dst)> Link::onCommunicate;
107 simgrid::surf::NetworkModel *surf_network_model = nullptr;
112 NetworkModel::~NetworkModel()
114 lmm_system_free(maxminSystem_);
115 xbt_heap_free(actionHeap_);
119 double NetworkModel::latencyFactor(double /*size*/) {
120 return sg_latency_factor;
123 double NetworkModel::bandwidthFactor(double /*size*/) {
124 return sg_bandwidth_factor;
127 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
131 double NetworkModel::nextOccuringEventFull(double now)
133 double minRes = Model::nextOccuringEventFull(now);
135 for(auto it(getRunningActionSet()->begin()), itend(getRunningActionSet()->end()); it != itend ; it++) {
136 NetworkAction *action = static_cast<NetworkAction*>(&*it);
137 if (action->latency_ > 0)
138 minRes = (minRes < 0) ? action->latency_ : std::min(minRes, action->latency_);
141 XBT_DEBUG("Min of share resources %f", minRes);
150 Link::Link(simgrid::surf::NetworkModel* model, const char* name, lmm_constraint_t constraint)
151 : Resource(model, name, constraint)
153 if (strcmp(name,"__loopback__"))
154 xbt_assert(!Link::byName(name), "Link '%s' declared several times in the platform.", name);
157 bandwidth_.scale = 1;
159 links->insert({name, this});
160 XBT_DEBUG("Create link '%s'",name);
164 /** @brief use destroy() instead of this destructor */
166 xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
168 /** @brief Fire the required callbacks and destroy the object
170 * Don't delete directly a Link, call l->destroy() instead.
174 if (!currentlyDestroying_) {
175 currentlyDestroying_ = true;
183 return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
186 double Link::latency()
188 return latency_.peak * latency_.scale;
191 double Link::bandwidth()
193 return bandwidth_.peak * bandwidth_.scale;
196 int Link::sharingPolicy()
198 return lmm_constraint_sharing_policy(getConstraint());
207 void Link::turnOff(){
213 void Link::setStateTrace(tmgr_trace_t trace) {
214 xbt_assert(stateEvent_ == nullptr, "Cannot set a second state trace to Link %s", getName());
215 stateEvent_ = future_evt_set->add_trace(trace, 0.0, this);
217 void Link::setBandwidthTrace(tmgr_trace_t trace)
219 xbt_assert(bandwidth_.event == nullptr, "Cannot set a second bandwidth trace to Link %s", getName());
220 bandwidth_.event = future_evt_set->add_trace(trace, 0.0, this);
222 void Link::setLatencyTrace(tmgr_trace_t trace)
224 xbt_assert(latency_.event == nullptr, "Cannot set a second latency trace to Link %s", getName());
225 latency_.event = future_evt_set->add_trace(trace, 0.0, this);
233 void NetworkAction::setState(Action::State state){
234 Action::State old = getState();
235 Action::setState(state);
236 networkActionStateChangedCallbacks(this, old, state);
242 #endif /* NETWORK_INTERFACE_CPP_ */