src/surf/network_interface.cpp

   1 /* Copyright (c) 2013-2015. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "network_interface.hpp"
   8 #include "simgrid/sg_config.h"
   9
  10 #ifndef NETWORK_INTERFACE_CPP_
  11 #define NETWORK_INTERFACE_CPP_
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  14                                 "Logging specific to the SURF network module");
  15
  16 /*********
  17  * C API *
  18  *********/
  19 SG_BEGIN_DECL()
  20 const char* sg_link_name(Link *link) {
  21   return link->getName();
  22 }
  23 Link * sg_link_by_name(const char* name) {
  24   return Link::byName(name);
  25 }
  26
  27 int sg_link_is_shared(Link *link){
  28   return link->sharingPolicy();
  29 }
  30 double sg_link_bandwidth(Link *link){
  31   return link->getBandwidth();
  32 }
  33 double sg_link_latency(Link *link){
  34   return link->getLatency();
  35 }
  36 void* sg_link_data(Link *link) {
  37         return link->getData();
  38 }
  39 void sg_link_data_set(Link *link,void *data) {
  40         link->setData(data);
  41 }
  42 int sg_link_amount(void) {
  43         return Link::linksAmount();
  44 }
  45 Link** sg_link_list(void) {
  46         return Link::linksList();
  47 }
  48 void sg_link_exit(void) {
  49         Link::linksExit();
  50 }
  51 SG_END_DECL()
  52 /*****************
  53  * List of links *
  54  *****************/
  55
  56 boost::unordered_map<std::string,Link *> *Link::links = new boost::unordered_map<std::string,Link *>();
  57 Link *Link::byName(const char* name) {
  58           Link * res = NULL;
  59           try {
  60                   res = links->at(name);
  61           } catch (std::out_of_range& e) {}
  62
  63           return res;
  64 }
  65 /** @brief Returns the amount of links in the platform */
  66 int Link::linksAmount() {
  67           return links->size();
  68 }
  69 /** @brief Returns a list of all existing links */
  70 Link **Link::linksList() {
  71           Link **res = xbt_new(Link*, (int)links->size());
  72           int i=0;
  73           for (auto kv : *links) {
  74                   res[i++] = kv.second;
  75           }
  76           return res;
  77 }
  78 /** @brief destructor of the static data */
  79 void Link::linksExit() {
  80         for (auto kv : *links)
  81                 delete (kv.second);
  82         delete links;
  83 }
  84 /*************
  85  * Callbacks *
  86  *************/
  87
  88 surf_callback(void, Link*) networkLinkCreatedCallbacks;
  89 surf_callback(void, Link*) networkLinkDestructedCallbacks;
  90 surf_callback(void, Link*, e_surf_resource_state_t, e_surf_resource_state_t) networkLinkStateChangedCallbacks;
  91 surf_callback(void, NetworkAction*, e_surf_action_state_t, e_surf_action_state_t) networkActionStateChangedCallbacks;
  92 surf_callback(void, NetworkAction*, RoutingEdge *src, RoutingEdge *dst, double size, double rate) networkCommunicateCallbacks;
  93
  94 void netlink_parse_init(sg_platf_link_cbarg_t link){
  95   if (link->policy == SURF_LINK_FULLDUPLEX) {
  96     char *link_id;
  97     link_id = bprintf("%s_UP", link->id);
  98     surf_network_model->createLink(link_id,
  99                       link->bandwidth,
 100                       link->bandwidth_trace,
 101                       link->latency,
 102                       link->latency_trace,
 103                       link->state,
 104                       link->state_trace, link->policy, link->properties);
 105     xbt_free(link_id);
 106     link_id = bprintf("%s_DOWN", link->id);
 107     surf_network_model->createLink(link_id,
 108                       link->bandwidth,
 109                       link->bandwidth_trace,
 110                       link->latency,
 111                       link->latency_trace,
 112                       link->state,
 113                       link->state_trace, link->policy, link->properties);
 114     xbt_free(link_id);
 115   } else {
 116           surf_network_model->createLink(link->id,
 117                           link->bandwidth,
 118                           link->bandwidth_trace,
 119                           link->latency,
 120                           link->latency_trace,
 121                           link->state,
 122                           link->state_trace, link->policy, link->properties);
 123   }
 124 }
 125
 126 void net_add_traces(){
 127   surf_network_model->addTraces();
 128 }
 129
 130 /*********
 131  * Model *
 132  *********/
 133
 134 NetworkModel *surf_network_model = NULL;
 135
 136 double NetworkModel::latencyFactor(double /*size*/) {
 137   return sg_latency_factor;
 138 }
 139
 140 double NetworkModel::bandwidthFactor(double /*size*/) {
 141   return sg_bandwidth_factor;
 142 }
 143
 144 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
 145   return rate;
 146 }
 147
 148 double NetworkModel::shareResourcesFull(double now)
 149 {
 150   NetworkAction *action = NULL;
 151   ActionList *runningActions = surf_network_model->getRunningActionSet();
 152   double minRes;
 153
 154   minRes = shareResourcesMaxMin(runningActions, surf_network_model->p_maxminSystem, surf_network_model->f_networkSolve);
 155
 156   for(ActionList::iterator it(runningActions->begin()), itend(runningActions->end())
 157        ; it != itend ; ++it) {
 158       action = static_cast<NetworkAction*>(&*it);
 159 #ifdef HAVE_LATENCY_BOUND_TRACKING
 160     if (lmm_is_variable_limited_by_latency(action->getVariable())) {
 161       action->m_latencyLimited = 1;
 162     } else {
 163       action->m_latencyLimited = 0;
 164     }
 165 #endif
 166     if (action->m_latency > 0) {
 167       minRes = (minRes < 0) ? action->m_latency : min(minRes, action->m_latency);
 168     }
 169   }
 170
 171   XBT_DEBUG("Min of share resources %f", minRes);
 172
 173   return minRes;
 174 }
 175
 176 /************
 177  * Resource *
 178  ************/
 179
 180 Link::Link(NetworkModel *model, const char *name, xbt_dict_t props)
 181 : Resource(model, name, props)
 182 {
 183   links->insert({name, this});
 184
 185   XBT_DEBUG("Create link '%s'",name);
 186 }
 187
 188 Link::Link(NetworkModel *model, const char *name, xbt_dict_t props,
 189                                  lmm_constraint_t constraint,
 190                              tmgr_history_t history,
 191                              tmgr_trace_t state_trace)
 192 : Resource(model, name, props, constraint)
 193 {
 194   if (state_trace)
 195     p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 196
 197   links->insert({name, this});
 198   XBT_DEBUG("Create link '%s'",name);
 199
 200 }
 201
 202 Link::~Link()
 203 {
 204   surf_callback_emit(networkLinkDestructedCallbacks, this);
 205 }
 206
 207 bool Link::isUsed()
 208 {
 209   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 210 }
 211
 212 double Link::getLatency()
 213 {
 214   return m_latCurrent;
 215 }
 216
 217 double Link::getBandwidth()
 218 {
 219   return p_power.peak * p_power.scale;
 220 }
 221
 222 int Link::sharingPolicy()
 223 {
 224   return lmm_constraint_sharing_policy(getConstraint());
 225 }
 226
 227 void Link::setState(e_surf_resource_state_t state){
 228   e_surf_resource_state_t old = Resource::getState();
 229   Resource::setState(state);
 230   surf_callback_emit(networkLinkStateChangedCallbacks, this, old, state);
 231 }
 232
 233
 234
 235 /**********
 236  * Action *
 237  **********/
 238
 239 void NetworkAction::setState(e_surf_action_state_t state){
 240   e_surf_action_state_t old = getState();
 241   Action::setState(state);
 242   surf_callback_emit(networkActionStateChangedCallbacks, this, old, state);
 243 }
 244
 245 #endif /* NETWORK_INTERFACE_CPP_ */