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 int sg_link_is_shared(Link *link){
  21   return link->isShared();
  22 }
  23 double sg_link_bandwidth(Link *link){
  24   return link->getBandwidth();
  25 }
  26 double sg_link_latency(Link *link){
  27   return link->getLatency();
  28 }
  29 const char* sg_link_name(Link *link) {
  30   return link->getName();
  31 }
  32 void* sg_link_data(Link *link) {
  33         return link->getData();
  34 }
  35 void sg_link_data_set(Link *link,void *data) {
  36         link->setData(data);
  37 }
  38
  39 SG_END_DECL()
  40
  41 /*************
  42  * Callbacks *
  43  *************/
  44
  45 surf_callback(void, Link*) networkLinkCreatedCallbacks;
  46 surf_callback(void, Link*) networkLinkDestructedCallbacks;
  47 surf_callback(void, Link*, e_surf_resource_state_t, e_surf_resource_state_t) networkLinkStateChangedCallbacks;
  48 surf_callback(void, NetworkActionPtr, e_surf_action_state_t, e_surf_action_state_t) networkActionStateChangedCallbacks;
  49 surf_callback(void, NetworkActionPtr, RoutingEdgePtr src, RoutingEdgePtr dst, double size, double rate) networkCommunicateCallbacks;
  50
  51 void netlink_parse_init(sg_platf_link_cbarg_t link){
  52   if (link->policy == SURF_LINK_FULLDUPLEX) {
  53     char *link_id;
  54     link_id = bprintf("%s_UP", link->id);
  55     surf_network_model->createLink(link_id,
  56                       link->bandwidth,
  57                       link->bandwidth_trace,
  58                       link->latency,
  59                       link->latency_trace,
  60                       link->state,
  61                       link->state_trace, link->policy, link->properties);
  62     xbt_free(link_id);
  63     link_id = bprintf("%s_DOWN", link->id);
  64     surf_network_model->createLink(link_id,
  65                       link->bandwidth,
  66                       link->bandwidth_trace,
  67                       link->latency,
  68                       link->latency_trace,
  69                       link->state,
  70                       link->state_trace, link->policy, link->properties);
  71     xbt_free(link_id);
  72   } else {
  73           surf_network_model->createLink(link->id,
  74                           link->bandwidth,
  75                           link->bandwidth_trace,
  76                           link->latency,
  77                           link->latency_trace,
  78                           link->state,
  79                           link->state_trace, link->policy, link->properties);
  80   }
  81 }
  82
  83 void net_add_traces(){
  84   surf_network_model->addTraces();
  85 }
  86
  87 /*********
  88  * Model *
  89  *********/
  90
  91 NetworkModelPtr surf_network_model = NULL;
  92
  93 double NetworkModel::latencyFactor(double /*size*/) {
  94   return sg_latency_factor;
  95 }
  96
  97 double NetworkModel::bandwidthFactor(double /*size*/) {
  98   return sg_bandwidth_factor;
  99 }
 100
 101 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
 102   return rate;
 103 }
 104
 105 double NetworkModel::shareResourcesFull(double now)
 106 {
 107   NetworkActionPtr action = NULL;
 108   ActionListPtr runningActions = surf_network_model->getRunningActionSet();
 109   double minRes;
 110
 111   minRes = shareResourcesMaxMin(runningActions, surf_network_model->p_maxminSystem, surf_network_model->f_networkSolve);
 112
 113   for(ActionList::iterator it(runningActions->begin()), itend(runningActions->end())
 114        ; it != itend ; ++it) {
 115       action = static_cast<NetworkActionPtr>(&*it);
 116 #ifdef HAVE_LATENCY_BOUND_TRACKING
 117     if (lmm_is_variable_limited_by_latency(action->getVariable())) {
 118       action->m_latencyLimited = 1;
 119     } else {
 120       action->m_latencyLimited = 0;
 121     }
 122 #endif
 123     if (action->m_latency > 0) {
 124       minRes = (minRes < 0) ? action->m_latency : min(minRes, action->m_latency);
 125     }
 126   }
 127
 128   XBT_DEBUG("Min of share resources %f", minRes);
 129
 130   return minRes;
 131 }
 132
 133 /************
 134  * Resource *
 135  ************/
 136
 137 Link::Link(NetworkModelPtr model, const char *name, xbt_dict_t props)
 138 : Resource(model, name, props)
 139 , p_latEvent(NULL)
 140 {
 141   surf_callback_emit(networkLinkCreatedCallbacks, this);
 142 }
 143
 144 Link::Link(NetworkModelPtr model, const char *name, xbt_dict_t props,
 145                                  lmm_constraint_t constraint,
 146                              tmgr_history_t history,
 147                              tmgr_trace_t state_trace)
 148 : Resource(model, name, props, constraint),
 149   p_latEvent(NULL)
 150 {
 151   surf_callback_emit(networkLinkCreatedCallbacks, this);
 152   if (state_trace)
 153     p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 154 }
 155
 156 Link::~Link()
 157 {
 158   surf_callback_emit(networkLinkDestructedCallbacks, this);
 159 }
 160
 161 bool Link::isUsed()
 162 {
 163   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 164 }
 165
 166 double Link::getLatency()
 167 {
 168   return m_latCurrent;
 169 }
 170
 171 double Link::getBandwidth()
 172 {
 173   return p_power.peak * p_power.scale;
 174 }
 175
 176 bool Link::isShared()
 177 {
 178   return lmm_constraint_is_shared(getConstraint());
 179 }
 180
 181 void Link::setState(e_surf_resource_state_t state){
 182   e_surf_resource_state_t old = Resource::getState();
 183   Resource::setState(state);
 184   surf_callback_emit(networkLinkStateChangedCallbacks, this, old, state);
 185 }
 186
 187 /**********
 188  * Action *
 189  **********/
 190
 191 void NetworkAction::setState(e_surf_action_state_t state){
 192   e_surf_action_state_t old = getState();
 193   Action::setState(state);
 194   surf_callback_emit(networkActionStateChangedCallbacks, this, old, state);
 195 }
 196
 197 #endif /* NETWORK_INTERFACE_CPP_ */