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 <algorithm>
   8
   9 #include "network_interface.hpp"
  10 #include "simgrid/sg_config.h"
  11
  12 #ifndef NETWORK_INTERFACE_CPP_
  13 #define NETWORK_INTERFACE_CPP_
  14
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  16                                 "Logging specific to the SURF network module");
  17
  18 /*********
  19  * C API *
  20  *********/
  21
  22 extern "C" {
  23
  24 const char* sg_link_name(Link *link) {
  25   return link->getName();
  26 }
  27 Link * sg_link_by_name(const char* name) {
  28   return Link::byName(name);
  29 }
  30
  31 int sg_link_is_shared(Link *link){
  32   return link->sharingPolicy();
  33 }
  34 double sg_link_bandwidth(Link *link){
  35   return link->getBandwidth();
  36 }
  37 double sg_link_latency(Link *link){
  38   return link->getLatency();
  39 }
  40 void* sg_link_data(Link *link) {
  41         return link->getData();
  42 }
  43 void sg_link_data_set(Link *link,void *data) {
  44         link->setData(data);
  45 }
  46 int sg_link_amount(void) {
  47         return Link::linksAmount();
  48 }
  49 Link** sg_link_list(void) {
  50         return Link::linksList();
  51 }
  52 void sg_link_exit(void) {
  53         Link::linksExit();
  54 }
  55
  56 }
  57
  58 /*****************
  59  * List of links *
  60  *****************/
  61
  62 namespace simgrid {
  63 namespace surf {
  64
  65 boost::unordered_map<std::string,Link *> *Link::links = new boost::unordered_map<std::string,Link *>();
  66 Link *Link::byName(const char* name) {
  67           Link * res = NULL;
  68           try {
  69                   res = links->at(name);
  70           } catch (std::out_of_range& e) {}
  71
  72           return res;
  73 }
  74 /** @brief Returns the amount of links in the platform */
  75 int Link::linksAmount() {
  76           return links->size();
  77 }
  78 /** @brief Returns a list of all existing links */
  79 Link **Link::linksList() {
  80           Link **res = xbt_new(Link*, (int)links->size());
  81           int i=0;
  82           for (auto kv : *links) {
  83                   res[i++] = kv.second;
  84           }
  85           return res;
  86 }
  87 /** @brief destructor of the static data */
  88 void Link::linksExit() {
  89         for (auto kv : *links)
  90                 (kv.second)->destroy();
  91         delete links;
  92 }
  93
  94 /*************
  95  * Callbacks *
  96  *************/
  97
  98 simgrid::surf::signal<void(simgrid::surf::Link*)> Link::onCreation;
  99 simgrid::surf::signal<void(simgrid::surf::Link*)> Link::onDestruction;
 100 simgrid::surf::signal<void(simgrid::surf::Link*, e_surf_resource_state_t, e_surf_resource_state_t)> Link::onStateChange;
 101
 102 simgrid::surf::signal<void(simgrid::surf::NetworkAction*, e_surf_action_state_t, e_surf_action_state_t)> networkActionStateChangedCallbacks;
 103 simgrid::surf::signal<void(simgrid::surf::NetworkAction*, simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst, double size, double rate)> networkCommunicateCallbacks;
 104
 105 }
 106 }
 107
 108 void netlink_parse_init(sg_platf_link_cbarg_t link){
 109   if (link->policy == SURF_LINK_FULLDUPLEX) {
 110     char *link_id;
 111     link_id = bprintf("%s_UP", link->id);
 112     surf_network_model->createLink(link_id,
 113                       link->bandwidth,
 114                       link->bandwidth_trace,
 115                       link->latency,
 116                       link->latency_trace,
 117                       link->state,
 118                       link->state_trace, link->policy, link->properties);
 119     xbt_free(link_id);
 120     link_id = bprintf("%s_DOWN", link->id);
 121     surf_network_model->createLink(link_id,
 122                       link->bandwidth,
 123                       link->bandwidth_trace,
 124                       link->latency,
 125                       link->latency_trace,
 126                       link->state,
 127                       link->state_trace, link->policy, link->properties);
 128     xbt_free(link_id);
 129   } else {
 130           surf_network_model->createLink(link->id,
 131                           link->bandwidth,
 132                           link->bandwidth_trace,
 133                           link->latency,
 134                           link->latency_trace,
 135                           link->state,
 136                           link->state_trace, link->policy, link->properties);
 137   }
 138 }
 139
 140 void net_add_traces(){
 141   surf_network_model->addTraces();
 142 }
 143
 144 /*********
 145  * Model *
 146  *********/
 147
 148 simgrid::surf::NetworkModel *surf_network_model = NULL;
 149
 150 namespace simgrid {
 151 namespace surf {
 152
 153 double NetworkModel::latencyFactor(double /*size*/) {
 154   return sg_latency_factor;
 155 }
 156
 157 double NetworkModel::bandwidthFactor(double /*size*/) {
 158   return sg_bandwidth_factor;
 159 }
 160
 161 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
 162   return rate;
 163 }
 164
 165 double NetworkModel::shareResourcesFull(double now)
 166 {
 167   NetworkAction *action = NULL;
 168   ActionList *runningActions = surf_network_model->getRunningActionSet();
 169   double minRes;
 170
 171   minRes = shareResourcesMaxMin(runningActions, surf_network_model->p_maxminSystem, surf_network_model->f_networkSolve);
 172
 173   for(ActionList::iterator it(runningActions->begin()), itend(runningActions->end())
 174        ; it != itend ; ++it) {
 175       action = static_cast<NetworkAction*>(&*it);
 176 #ifdef HAVE_LATENCY_BOUND_TRACKING
 177     if (lmm_is_variable_limited_by_latency(action->getVariable())) {
 178       action->m_latencyLimited = 1;
 179     } else {
 180       action->m_latencyLimited = 0;
 181     }
 182 #endif
 183     if (action->m_latency > 0) {
 184       minRes = (minRes < 0) ? action->m_latency : std::min(minRes, action->m_latency);
 185     }
 186   }
 187
 188   XBT_DEBUG("Min of share resources %f", minRes);
 189
 190   return minRes;
 191 }
 192
 193 /************
 194  * Resource *
 195  ************/
 196
 197 Link::Link(simgrid::surf::NetworkModel *model, const char *name, xbt_dict_t props)
 198 : Resource(model, name),
 199   PropertyHolder(props)
 200 {
 201   links->insert({name, this});
 202
 203   XBT_DEBUG("Create link '%s'",name);
 204 }
 205
 206 Link::Link(simgrid::surf::NetworkModel *model, const char *name, xbt_dict_t props,
 207                                  lmm_constraint_t constraint,
 208                              tmgr_history_t history,
 209                              tmgr_trace_t state_trace)
 210 : Resource(model, name, constraint),
 211   PropertyHolder(props)
 212 {
 213   if (state_trace)
 214     p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 215
 216   links->insert({name, this});
 217   XBT_DEBUG("Create link '%s'",name);
 218
 219 }
 220
 221 /** @brief use destroy() instead of this destructor */
 222 Link::~Link() {
 223         xbt_assert(currentlyDestroying_, "Don't delete Links directly. Call destroy() instead.");
 224 }
 225 /** @brief Fire the require callbacks and destroy the object
 226  *
 227  * Don't delete directly an Link, call l->destroy() instead.
 228  */
 229 void Link::destroy()
 230 {
 231         if (!currentlyDestroying_) {
 232                 currentlyDestroying_ = true;
 233                 onDestruction(this);
 234                 delete this;
 235         }
 236 }
 237
 238 bool Link::isUsed()
 239 {
 240   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 241 }
 242
 243 double Link::getLatency()
 244 {
 245   return m_latCurrent;
 246 }
 247
 248 double Link::getBandwidth()
 249 {
 250   return p_speed.peak * p_speed.scale;
 251 }
 252
 253 int Link::sharingPolicy()
 254 {
 255   return lmm_constraint_sharing_policy(getConstraint());
 256 }
 257
 258 void Link::setState(e_surf_resource_state_t state){
 259   e_surf_resource_state_t old = Resource::getState();
 260   Resource::setState(state);
 261   onStateChange(this, old, state);
 262 }
 263
 264 /**********
 265  * Action *
 266  **********/
 267
 268 void NetworkAction::setState(e_surf_action_state_t state){
 269   e_surf_action_state_t old = getState();
 270   Action::setState(state);
 271   networkActionStateChangedCallbacks(this, old, state);
 272 }
 273
 274 }
 275 }
 276
 277 #endif /* NETWORK_INTERFACE_CPP_ */