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  * Callbacks *
  18  *************/
  19
  20 surf_callback(void, LinkPtr) networkLinkCreatedCallbacks;
  21 surf_callback(void, LinkPtr) networkLinkDestructedCallbacks;
  22 surf_callback(void, LinkPtr, e_surf_resource_state_t, e_surf_resource_state_t) networkLinkStateChangedCallbacks;
  23 surf_callback(void, NetworkActionPtr, e_surf_action_state_t, e_surf_action_state_t) networkActionStateChangedCallbacks;
  24 surf_callback(void, NetworkActionPtr, RoutingEdgePtr src, RoutingEdgePtr dst, double size, double rate) networkCommunicateCallbacks;
  25
  26 void netlink_parse_init(sg_platf_link_cbarg_t link){
  27   if (link->policy == SURF_LINK_FULLDUPLEX) {
  28     char *link_id;
  29     link_id = bprintf("%s_UP", link->id);
  30     surf_network_model->createLink(link_id,
  31                       link->bandwidth,
  32                       link->bandwidth_trace,
  33                       link->latency,
  34                       link->latency_trace,
  35                       link->state,
  36                       link->state_trace, link->policy, link->properties);
  37     xbt_free(link_id);
  38     link_id = bprintf("%s_DOWN", link->id);
  39     surf_network_model->createLink(link_id,
  40                       link->bandwidth,
  41                       link->bandwidth_trace,
  42                       link->latency,
  43                       link->latency_trace,
  44                       link->state,
  45                       link->state_trace, link->policy, link->properties);
  46     xbt_free(link_id);
  47   } else {
  48           surf_network_model->createLink(link->id,
  49                           link->bandwidth,
  50                           link->bandwidth_trace,
  51                           link->latency,
  52                           link->latency_trace,
  53                           link->state,
  54                           link->state_trace, link->policy, link->properties);
  55   }
  56 }
  57
  58 void net_add_traces(){
  59   surf_network_model->addTraces();
  60 }
  61
  62 /*********
  63  * Model *
  64  *********/
  65
  66 NetworkModelPtr surf_network_model = NULL;
  67
  68 double NetworkModel::latencyFactor(double /*size*/) {
  69   return sg_latency_factor;
  70 }
  71
  72 double NetworkModel::bandwidthFactor(double /*size*/) {
  73   return sg_bandwidth_factor;
  74 }
  75
  76 double NetworkModel::bandwidthConstraint(double rate, double /*bound*/, double /*size*/) {
  77   return rate;
  78 }
  79
  80 double NetworkModel::shareResourcesFull(double now)
  81 {
  82   NetworkActionPtr action = NULL;
  83   ActionListPtr runningActions = surf_network_model->getRunningActionSet();
  84   double minRes;
  85
  86   minRes = shareResourcesMaxMin(runningActions, surf_network_model->p_maxminSystem, surf_network_model->f_networkSolve);
  87
  88   for(ActionList::iterator it(runningActions->begin()), itend(runningActions->end())
  89        ; it != itend ; ++it) {
  90       action = static_cast<NetworkActionPtr>(&*it);
  91 #ifdef HAVE_LATENCY_BOUND_TRACKING
  92     if (lmm_is_variable_limited_by_latency(action->getVariable())) {
  93       action->m_latencyLimited = 1;
  94     } else {
  95       action->m_latencyLimited = 0;
  96     }
  97 #endif
  98     if (action->m_latency > 0) {
  99       minRes = (minRes < 0) ? action->m_latency : min(minRes, action->m_latency);
 100     }
 101   }
 102
 103   XBT_DEBUG("Min of share resources %f", minRes);
 104
 105   return minRes;
 106 }
 107
 108 /************
 109  * Resource *
 110  ************/
 111
 112 Link::Link(NetworkModelPtr model, const char *name, xbt_dict_t props)
 113 : Resource(model, name, props)
 114 , p_latEvent(NULL)
 115 {
 116   surf_callback_emit(networkLinkCreatedCallbacks, this);
 117 }
 118
 119 Link::Link(NetworkModelPtr model, const char *name, xbt_dict_t props,
 120                                  lmm_constraint_t constraint,
 121                              tmgr_history_t history,
 122                              tmgr_trace_t state_trace)
 123 : Resource(model, name, props, constraint),
 124   p_latEvent(NULL)
 125 {
 126   surf_callback_emit(networkLinkCreatedCallbacks, this);
 127   if (state_trace)
 128     p_stateEvent = tmgr_history_add_trace(history, state_trace, 0.0, 0, this);
 129 }
 130
 131 Link::~Link()
 132 {
 133   surf_callback_emit(networkLinkDestructedCallbacks, this);
 134 }
 135
 136 bool Link::isUsed()
 137 {
 138   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
 139 }
 140
 141 double Link::getLatency()
 142 {
 143   return m_latCurrent;
 144 }
 145
 146 double Link::getBandwidth()
 147 {
 148   return p_power.peak * p_power.scale;
 149 }
 150
 151 bool Link::isShared()
 152 {
 153   return lmm_constraint_is_shared(getConstraint());
 154 }
 155
 156 void Link::setState(e_surf_resource_state_t state){
 157   e_surf_resource_state_t old = Resource::getState();
 158   Resource::setState(state);
 159   surf_callback_emit(networkLinkStateChangedCallbacks, this, old, state);
 160 }
 161
 162 /**********
 163  * Action *
 164  **********/
 165
 166 void NetworkAction::setState(e_surf_action_state_t state){
 167   e_surf_action_state_t old = getState();
 168   Action::setState(state);
 169   surf_callback_emit(networkActionStateChangedCallbacks, this, old, state);
 170 }
 171
 172 #endif /* NETWORK_INTERFACE_CPP_ */