src/surf/network_interface.cpp

   1 /* Copyright (c) 2013-2014. 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->isShared();
  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 }
  83 /*************
  84  * Callbacks *
  85  *************/
  86
  87 surf_callback(void, Link*) networkLinkCreatedCallbacks;
  88 surf_callback(void, Link*) networkLinkDestructedCallbacks;
  89 surf_callback(void, Link*, e_surf_resource_state_t, e_surf_resource_state_t) networkLinkStateChangedCallbacks;
  90 surf_callback(void, NetworkAction*, e_surf_action_state_t, e_surf_action_state_t) networkActionStateChangedCallbacks;
  91 surf_callback(void, NetworkAction*, RoutingEdge *src, RoutingEdge *dst, double size, double rate) networkCommunicateCallbacks;
  92
  93 void netlink_parse_init(sg_platf_link_cbarg_t link){
  94   if (link->policy == SURF_LINK_FULLDUPLEX) {
  95     char *link_id;
  96     link_id = bprintf("%s_UP", link->id);
  97     surf_network_model->createLink(link_id,
  98                       link->bandwidth,
  99                       link->bandwidth_trace,
 100                       link->latency,
 101                       link->latency_trace,
 102                       link->state,
 103                       link->state_trace, link->policy, link->properties);
 104     xbt_free(link_id);
 105     link_id = bprintf("%s_DOWN", link->id);
 106     surf_network_model->createLink(link_id,
 107                       link->bandwidth,
 108                       link->bandwidth_trace,
 109                       link->latency,
 110                       link->latency_trace,
 111                       link->state,
 112                       link->state_trace, link->policy, link->properties);
 113     xbt_free(link_id);
 114   } else {
 115           surf_network_model->createLink(link->id,
 116                           link->bandwidth,
 117                           link->bandwidth_trace,
 118                           link->latency,
 119                           link->latency_trace,
 120                           link->state,
 121                           link->state_trace, link->policy, link->properties);
 122   }
 123 }
 124
 125 void net_add_traces(){
 126   surf_network_model->addTraces();
 127 }
 128
 129 /*********
 130  * Model *
 131  *********/
 132
 133 NetworkModel *surf_network_model = NULL;
 134
 135 double NetworkModel::latencyFactor(double /*size*/) {
 136   return sg_latency_factor;
 137 }
 138
 139 double NetworkModel::bandwidthFactor(double /*size*/) {
 140   return sg_bandwidth_factor;
 141 }
 142
 143 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
 144   return rate;
 145 }
 146
 147 double NetworkModel::shareResourcesFull(double now)
 148 {
 149   NetworkAction *action = NULL;
 150   ActionList *runningActions = surf_network_model->getRunningActionSet();
 151   double minRes;
 152
 153   minRes = shareResourcesMaxMin(runningActions, surf_network_model->p_maxminSystem, surf_network_model->f_networkSolve);
 154
 155   for(ActionList::iterator it(runningActions->begin()), itend(runningActions->end())
 156        ; it != itend ; ++it) {
 157       action = static_cast<NetworkAction*>(&*it);
 158 #ifdef HAVE_LATENCY_BOUND_TRACKING
 159     if (lmm_is_variable_limited_by_latency(action->getVariable())) {
 160       action->m_latencyLimited = 1;
 161     } else {
 162       action->m_latencyLimited = 0;
 163     }
 164 #endif
 165     if (action->m_latency > 0) {
 166       minRes = (minRes < 0) ? action->m_latency : min(minRes, action->m_latency);
 167     }
 168   }
 169
 170   XBT_DEBUG("Min of share resources %f", minRes);
 171
 172   return minRes;
 173 }
 174
 175 /************
 176  * Resource *
 177  ************/
 178
 179 Link::Link(NetworkModel *model, const char *name, xbt_dict_t props)
 180 : Resource(model, name, props)
 181 , p_latEvent(NULL)
 182 {
 183   surf_callback_emit(networkLinkCreatedCallbacks, this);
 184   links->insert({name, this});
 185
 186   XBT_DEBUG("Create link '%s'",name);
 187 }
 188
 189 Link::Link(NetworkModel *model, const char *name, xbt_dict_t props,
 190                                  lmm_constraint_t constraint,
 191                              tmgr_history_t history,
 192                              tmgr_trace_t state_trace)
 193 : Resource(model, name, props, constraint),
 194   p_latEvent(NULL)
 195 {
 196   surf_callback_emit(networkLinkCreatedCallbacks, this);
 197   if (state_trace)
 198     p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 199
 200   links->insert({name, this});
 201   XBT_DEBUG("Create link '%s'",name);
 202
 203 }
 204
 205 Link::~Link()
 206 {
 207   surf_callback_emit(networkLinkDestructedCallbacks, this);
 208 }
 209
 210 bool Link::isUsed()
 211 {
 212   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 213 }
 214
 215 double Link::getLatency()
 216 {
 217   return m_latCurrent;
 218 }
 219
 220 double Link::getBandwidth()
 221 {
 222   return p_power.peak * p_power.scale;
 223 }
 224
 225 bool Link::isShared()
 226 {
 227   return lmm_constraint_is_shared(getConstraint());
 228 }
 229
 230 void Link::setState(e_surf_resource_state_t state){
 231   e_surf_resource_state_t old = Resource::getState();
 232   Resource::setState(state);
 233   surf_callback_emit(networkLinkStateChangedCallbacks, this, old, state);
 234 }
 235
 236
 237
 238 /**********
 239  * Action *
 240  **********/
 241
 242 void NetworkAction::setState(e_surf_action_state_t state){
 243   e_surf_action_state_t old = getState();
 244   Action::setState(state);
 245   surf_callback_emit(networkActionStateChangedCallbacks, this, old, state);
 246 }
 247
 248 #endif /* NETWORK_INTERFACE_CPP_ */