src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  12                                 "Logging specific to the SURF network module");
  13
  14 surf_network_model_t surf_network_model = NULL;
  15 static lmm_system_t network_maxmin_system = NULL;
  16 static void (*network_solve) (lmm_system_t) = NULL;
  17
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 int card_number = 0;
  22 int host_number = 0;
  23 link_CM02_t **routing_table = NULL;
  24 int *routing_table_size = NULL;
  25 static link_CM02_t loopback = NULL;
  26
  27 static void create_routing_table(void)
  28 {
  29   routing_table =
  30       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  31   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  32 }
  33
  34 static void link_free(void *nw_link)
  35 {
  36   free(((link_CM02_t) nw_link)->name);
  37   free(nw_link);
  38 }
  39
  40 static link_CM02_t link_new(char *name,
  41                             double bw_initial,
  42                             tmgr_trace_t bw_trace,
  43                             double lat_initial,
  44                             tmgr_trace_t lat_trace,
  45                             e_surf_link_state_t
  46                             state_initial,
  47                             tmgr_trace_t state_trace,
  48                             e_surf_link_sharing_policy_t
  49                             policy, xbt_dict_t properties)
  50 {
  51   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  52   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  53               "Link '%s' declared several times in the platform file.", name);
  54
  55   nw_link->model = (surf_model_t) surf_network_model;
  56   nw_link->name = name;
  57   nw_link->bw_current = bw_initial;
  58   if (bw_trace)
  59     nw_link->bw_event =
  60         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  61   nw_link->lat_current = lat_initial;
  62   if (lat_trace)
  63     nw_link->lat_event =
  64         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  65   nw_link->state_current = state_initial;
  66   if (state_trace)
  67     nw_link->state_event =
  68         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  69
  70   nw_link->constraint =
  71       lmm_constraint_new(network_maxmin_system, nw_link,
  72                          nw_link->bw_current);
  73
  74   if (policy == SURF_LINK_FATPIPE)
  75     lmm_constraint_shared(nw_link->constraint);
  76
  77   nw_link->properties = properties;
  78
  79   current_property_set = properties;
  80
  81   xbt_dict_set(link_set, name, nw_link, link_free);
  82
  83   return nw_link;
  84 }
  85
  86 static void network_card_free(void *nw_card)
  87 {
  88   free(((network_card_CM02_t) nw_card)->name);
  89   free(nw_card);
  90 }
  91
  92 static int network_card_new(const char *card_name)
  93 {
  94   network_card_CM02_t card =
  95       xbt_dict_get_or_null(network_card_set, card_name);
  96
  97   if (!card) {
  98     card = xbt_new0(s_network_card_CM02_t, 1);
  99     card->name = xbt_strdup(card_name);
 100     card->id = card_number++;
 101     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 102   }
 103   return card->id;
 104 }
 105
 106 static void route_new(int src_id, int dst_id,
 107                       link_CM02_t * link_list, int nb_link)
 108 {
 109   ROUTE_SIZE(src_id, dst_id) = nb_link;
 110   ROUTE(src_id, dst_id) = link_list =
 111       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 112 }
 113
 114 static void parse_link_init(void)
 115 {
 116   char *name_link;
 117   double bw_initial;
 118   tmgr_trace_t bw_trace;
 119   double lat_initial;
 120   tmgr_trace_t lat_trace;
 121   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 122   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 123   tmgr_trace_t state_trace;
 124
 125   name_link = xbt_strdup(A_surfxml_link_id);
 126   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 127   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 128   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 129   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 130
 131   xbt_assert0((A_surfxml_link_state ==
 132                A_surfxml_link_state_ON)
 133               || (A_surfxml_link_state ==
 134                   A_surfxml_link_state_OFF), "Invalid state");
 135   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 136     state_initial_link = SURF_LINK_ON;
 137   else if (A_surfxml_link_state ==
 138            A_surfxml_link_state_OFF)
 139     state_initial_link = SURF_LINK_OFF;
 140
 141   if (A_surfxml_link_sharing_policy ==
 142       A_surfxml_link_sharing_policy_SHARED)
 143     policy_initial_link = SURF_LINK_SHARED;
 144   else if (A_surfxml_link_sharing_policy ==
 145            A_surfxml_link_sharing_policy_FATPIPE)
 146     policy_initial_link = SURF_LINK_FATPIPE;
 147
 148   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 149
 150   link_new(name_link, bw_initial, bw_trace,
 151                    lat_initial, lat_trace, state_initial_link, state_trace,
 152                    policy_initial_link, xbt_dict_new());
 153
 154 }
 155
 156 static int src_id = -1;
 157 static int dst_id = -1;
 158
 159 static void parse_route_set_endpoints(void)
 160 {
 161   src_id = network_card_new(A_surfxml_route_src);
 162   dst_id = network_card_new(A_surfxml_route_dst);
 163
 164   route_link_list = xbt_dynar_new(sizeof(char *), &free_string);
 165 }
 166
 167 static void parse_route_set_route(void)
 168 {
 169   char *name;
 170   if (src_id != -1 && dst_id != -1) {
 171     name = bprintf("%d##%d",src_id, dst_id);
 172     xbt_dict_set(route_table, name, route_link_list, NULL);
 173     free(name);
 174   }
 175 }
 176
 177 static void add_loopback(void)
 178 {
 179   int i;
 180   /* Adding loopback if needed */
 181   for (i = 0; i < host_number; i++)
 182     if (!ROUTE_SIZE(i, i)) {
 183       if (!loopback)
 184         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 185                                     498000000, NULL, 0.000015, NULL,
 186                                     SURF_LINK_ON, NULL,
 187                                     SURF_LINK_FATPIPE,NULL);
 188       ROUTE_SIZE(i, i) = 1;
 189       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 190       ROUTE(i, i)[0] = loopback;
 191     }
 192 }
 193
 194 static void add_route(void)
 195 {
 196   xbt_ex_t e;
 197   int nb_link = 0;
 198   unsigned int cpt = 0;
 199   int link_list_capacity = 0;
 200   link_CM02_t *link_list = NULL;
 201   char* link;
 202
 203   if (routing_table == NULL) create_routing_table();
 204
 205   link_list_capacity = xbt_dynar_length(links);
 206   link_list = xbt_new(link_CM02_t, link_list_capacity);
 207
 208   src_id = atoi(xbt_dynar_get_as(keys, 0, char*));
 209   dst_id = atoi(xbt_dynar_get_as(keys, 1, char*));
 210
 211   link = NULL;
 212   xbt_dynar_foreach (links, cpt, link) {
 213       TRY {
 214         link_list[nb_link++] = xbt_dict_get(link_set, link);
 215       }
 216       CATCH(e) {
 217         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 218       }
 219   }
 220   route_new(src_id, dst_id, link_list, nb_link);
 221
 222 }
 223
 224 static void count_hosts(void)
 225 {
 226    host_number++;
 227 }
 228
 229 static void define_callbacks(const char *file)
 230 {
 231   /* Figuring out the network links */
 232   surfxml_add_callback(STag_surfxml_host_cb_list, count_hosts);
 233   surfxml_add_callback(STag_surfxml_link_cb_list, parse_link_init);
 234   surfxml_add_callback(STag_surfxml_prop_cb_list, parse_properties);
 235   surfxml_add_callback(STag_surfxml_route_cb_list, parse_route_set_endpoints);
 236   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, parse_route_elem);
 237   surfxml_add_callback(ETag_surfxml_route_cb_list, parse_route_set_route);
 238   surfxml_add_callback(STag_surfxml_platform_cb_list, init_route_table);
 239   surfxml_add_callback(ETag_surfxml_platform_cb_list, add_route);
 240   surfxml_add_callback(ETag_surfxml_platform_cb_list, add_loopback);
 241 }
 242
 243 static void *name_service(const char *name)
 244 {
 245   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 246   return card;
 247 }
 248
 249 static const char *get_resource_name(void *resource_id)
 250 {
 251   return ((network_card_CM02_t) resource_id)->name;
 252 }
 253
 254 static int resource_used(void *resource_id)
 255 {
 256   return lmm_constraint_used(network_maxmin_system,
 257                              ((link_CM02_t) resource_id)->
 258                              constraint);
 259 }
 260
 261 static int action_free(surf_action_t action)
 262 {
 263   action->using--;
 264   if (!action->using) {
 265     xbt_swag_remove(action, action->state_set);
 266     if (((surf_action_network_CM02_t) action)->variable)
 267       lmm_variable_free(network_maxmin_system,
 268                         ((surf_action_network_CM02_t) action)->variable);
 269     free(action);
 270     return 1;
 271   }
 272   return 0;
 273 }
 274
 275 static void action_use(surf_action_t action)
 276 {
 277   action->using++;
 278 }
 279
 280 static void action_cancel(surf_action_t action)
 281 {
 282   return;
 283 }
 284
 285 static void action_recycle(surf_action_t action)
 286 {
 287   return;
 288 }
 289
 290 static void action_change_state(surf_action_t action,
 291                                 e_surf_action_state_t state)
 292 {
 293 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 294 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 295 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 296 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 297 /*     } */
 298
 299   surf_action_change_state(action, state);
 300   return;
 301 }
 302
 303 static double share_resources(double now)
 304 {
 305   s_surf_action_network_CM02_t s_action;
 306   surf_action_network_CM02_t action = NULL;
 307   xbt_swag_t running_actions =
 308       surf_network_model->common_public->states.running_action_set;
 309   double min;
 310
 311   min = generic_maxmin_share_resources(running_actions,
 312                                        xbt_swag_offset(s_action,
 313                                                        variable),
 314                                        network_maxmin_system,
 315                                        network_solve);
 316
 317   xbt_swag_foreach(action, running_actions) {
 318     if (action->latency > 0) {
 319       if (min < 0)
 320         min = action->latency;
 321       else if (action->latency < min)
 322         min = action->latency;
 323     }
 324   }
 325
 326   return min;
 327 }
 328
 329 static void update_actions_state(double now, double delta)
 330 {
 331   double deltap = 0.0;
 332   surf_action_network_CM02_t action = NULL;
 333   surf_action_network_CM02_t next_action = NULL;
 334   xbt_swag_t running_actions =
 335       surf_network_model->common_public->states.running_action_set;
 336   /*
 337      xbt_swag_t failed_actions =
 338      surf_network_model->common_public->states.failed_action_set;
 339    */
 340
 341   xbt_swag_foreach_safe(action, next_action, running_actions) {
 342     deltap = delta;
 343     if (action->latency > 0) {
 344       if (action->latency > deltap) {
 345         double_update(&(action->latency), deltap);
 346         deltap = 0.0;
 347       } else {
 348         double_update(&(deltap), action->latency);
 349         action->latency = 0.0;
 350       }
 351       if ((action->latency == 0.0) && !(action->suspended))
 352         lmm_update_variable_weight(network_maxmin_system, action->variable,
 353                                    action->lat_current);
 354     }
 355     double_update(&(action->generic_action.remains),
 356                   lmm_variable_getvalue(action->variable) * deltap);
 357     if (action->generic_action.max_duration != NO_MAX_DURATION)
 358       double_update(&(action->generic_action.max_duration), delta);
 359
 360     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 361
 362     if ((action->generic_action.remains <= 0) &&
 363         (lmm_get_variable_weight(action->variable) > 0)) {
 364       action->generic_action.finish = surf_get_clock();
 365       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 366     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 367                (action->generic_action.max_duration <= 0)) {
 368       action->generic_action.finish = surf_get_clock();
 369       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 370     } else {                    /* Need to check that none of the model has failed */
 371       lmm_constraint_t cnst = NULL;
 372       int i = 0;
 373       link_CM02_t nw_link = NULL;
 374
 375       while ((cnst =
 376               lmm_get_cnst_from_var(network_maxmin_system,
 377                                     action->variable, i++))) {
 378         nw_link = lmm_constraint_id(cnst);
 379         if (nw_link->state_current == SURF_LINK_OFF) {
 380           action->generic_action.finish = surf_get_clock();
 381           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 382           break;
 383         }
 384       }
 385     }
 386   }
 387
 388   return;
 389 }
 390
 391 static void update_resource_state(void *id,
 392                                   tmgr_trace_event_t event_type,
 393                                   double value)
 394 {
 395   link_CM02_t nw_link = id;
 396   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 397   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 398   /*     value, event_type); */
 399
 400   if (event_type == nw_link->bw_event) {
 401     nw_link->bw_current = value;
 402     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 403                                 nw_link->bw_current);
 404   } else if (event_type == nw_link->lat_event) {
 405     double delta = value - nw_link->lat_current;
 406     lmm_variable_t var = NULL;
 407     surf_action_network_CM02_t action = NULL;
 408
 409     nw_link->lat_current = value;
 410     while (lmm_get_var_from_cnst
 411            (network_maxmin_system, nw_link->constraint, &var)) {
 412       action = lmm_variable_id(var);
 413       action->lat_current += delta;
 414       if (action->rate < 0)
 415         lmm_update_variable_bound(network_maxmin_system, action->variable,
 416                                   SG_TCP_CTE_GAMMA / (2.0 *
 417                                                       action->
 418                                                       lat_current));
 419       else
 420         lmm_update_variable_bound(network_maxmin_system, action->variable,
 421                                   min(action->rate,
 422                                       SG_TCP_CTE_GAMMA / (2.0 *
 423                                                           action->
 424                                                           lat_current)));
 425       if (!(action->suspended))
 426         lmm_update_variable_weight(network_maxmin_system, action->variable,
 427                                    action->lat_current);
 428       lmm_update_variable_latency(network_maxmin_system, action->variable,
 429                                   delta);
 430     }
 431   } else if (event_type == nw_link->state_event) {
 432     if (value > 0)
 433       nw_link->state_current = SURF_LINK_ON;
 434     else
 435       nw_link->state_current = SURF_LINK_OFF;
 436   } else {
 437     CRITICAL0("Unknown event ! \n");
 438     xbt_abort();
 439   }
 440
 441   return;
 442 }
 443
 444 static surf_action_t communicate(void *src, void *dst, double size,
 445                                  double rate)
 446 {
 447   surf_action_network_CM02_t action = NULL;
 448   network_card_CM02_t card_src = src;
 449   network_card_CM02_t card_dst = dst;
 450   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 451   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 452   int i;
 453
 454   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 455   xbt_assert2(route_size,
 456               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 457               card_src->name, card_dst->name);
 458
 459   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 460
 461   action->generic_action.using = 1;
 462   action->generic_action.cost = size;
 463   action->generic_action.remains = size;
 464   action->generic_action.max_duration = NO_MAX_DURATION;
 465   action->generic_action.start = surf_get_clock();
 466   action->generic_action.finish = -1.0;
 467   action->generic_action.model_type =
 468       (surf_model_t) surf_network_model;
 469   action->suspended = 0;        /* Should be useless because of the
 470                                    calloc but it seems to help valgrind... */
 471   action->generic_action.state_set =
 472       surf_network_model->common_public->states.running_action_set;
 473
 474   xbt_swag_insert(action, action->generic_action.state_set);
 475   action->rate = rate;
 476
 477   action->latency = 0.0;
 478   for (i = 0; i < route_size; i++)
 479     action->latency += route[i]->lat_current;
 480   action->lat_current = action->latency;
 481
 482   if (action->latency > 0)
 483     action->variable =
 484         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 485                          route_size);
 486   else
 487     action->variable =
 488         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 489                          route_size);
 490
 491   if (action->rate < 0) {
 492     if (action->lat_current > 0)
 493       lmm_update_variable_bound(network_maxmin_system, action->variable,
 494                                 SG_TCP_CTE_GAMMA / (2.0 *
 495                                                     action->lat_current));
 496     else
 497       lmm_update_variable_bound(network_maxmin_system, action->variable,
 498                                 -1.0);
 499   } else {
 500     if (action->lat_current > 0)
 501       lmm_update_variable_bound(network_maxmin_system, action->variable,
 502                                 min(action->rate,
 503                                     SG_TCP_CTE_GAMMA / (2.0 *
 504                                                         action->
 505                                                         lat_current)));
 506     else
 507       lmm_update_variable_bound(network_maxmin_system, action->variable,
 508                                 action->rate);
 509   }
 510   lmm_update_variable_latency(network_maxmin_system, action->variable,
 511                               action->latency);
 512
 513   for (i = 0; i < route_size; i++)
 514     lmm_expand(network_maxmin_system, route[i]->constraint,
 515                action->variable, 1.0);
 516   XBT_OUT;
 517
 518   return (surf_action_t) action;
 519 }
 520
 521 /* returns an array of link_CM02_t */
 522 static const void **get_route(void *src, void *dst)
 523 {
 524   network_card_CM02_t card_src = src;
 525   network_card_CM02_t card_dst = dst;
 526   return (const void **) ROUTE(card_src->id, card_dst->id);
 527 }
 528
 529 static int get_route_size(void *src, void *dst)
 530 {
 531   network_card_CM02_t card_src = src;
 532   network_card_CM02_t card_dst = dst;
 533   return ROUTE_SIZE(card_src->id, card_dst->id);
 534 }
 535
 536 static const char *get_link_name(const void *link)
 537 {
 538   return ((link_CM02_t) link)->name;
 539 }
 540
 541 static double get_link_bandwidth(const void *link)
 542 {
 543   return ((link_CM02_t) link)->bw_current;
 544 }
 545
 546 static double get_link_latency(const void *link)
 547 {
 548   return ((link_CM02_t) link)->lat_current;
 549 }
 550
 551 static xbt_dict_t get_properties(void *link)
 552 {
 553  return ((link_CM02_t) link)->properties;
 554 }
 555
 556 static void action_suspend(surf_action_t action)
 557 {
 558   ((surf_action_network_CM02_t) action)->suspended = 1;
 559   lmm_update_variable_weight(network_maxmin_system,
 560                              ((surf_action_network_CM02_t) action)->
 561                              variable, 0.0);
 562 }
 563
 564 static void action_resume(surf_action_t action)
 565 {
 566   if (((surf_action_network_CM02_t) action)->suspended) {
 567     lmm_update_variable_weight(network_maxmin_system,
 568                                ((surf_action_network_CM02_t) action)->
 569                                variable,
 570                                ((surf_action_network_CM02_t) action)->
 571                                lat_current);
 572     ((surf_action_network_CM02_t) action)->suspended = 0;
 573   }
 574 }
 575
 576 static int action_is_suspended(surf_action_t action)
 577 {
 578   return ((surf_action_network_CM02_t) action)->suspended;
 579 }
 580
 581 static void action_set_max_duration(surf_action_t action, double duration)
 582 {
 583   action->max_duration = duration;
 584 }
 585
 586 static void finalize(void)
 587 {
 588   int i, j;
 589
 590   xbt_dict_free(&network_card_set);
 591   xbt_dict_free(&link_set);
 592   xbt_swag_free(surf_network_model->common_public->states.
 593                 ready_action_set);
 594   xbt_swag_free(surf_network_model->common_public->states.
 595                 running_action_set);
 596   xbt_swag_free(surf_network_model->common_public->states.
 597                 failed_action_set);
 598   xbt_swag_free(surf_network_model->common_public->states.
 599                 done_action_set);
 600   free(surf_network_model->common_public);
 601   free(surf_network_model->common_private);
 602   free(surf_network_model->extension_public);
 603
 604   free(surf_network_model);
 605   surf_network_model = NULL;
 606
 607   loopback = NULL;
 608   for (i = 0; i < card_number; i++)
 609     for (j = 0; j < card_number; j++)
 610       free(ROUTE(i, j));
 611   free(routing_table);
 612   routing_table = NULL;
 613   free(routing_table_size);
 614   routing_table_size = NULL;
 615   card_number = 0;
 616 }
 617
 618 static void surf_network_model_init_internal(void)
 619 {
 620   s_surf_action_t action;
 621
 622   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 623
 624   surf_network_model->common_private =
 625       xbt_new0(s_surf_model_private_t, 1);
 626   surf_network_model->common_public =
 627       xbt_new0(s_surf_model_public_t, 1);
 628   surf_network_model->extension_public =
 629       xbt_new0(s_surf_network_model_extension_public_t, 1);
 630
 631   surf_network_model->common_public->states.ready_action_set =
 632       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 633   surf_network_model->common_public->states.running_action_set =
 634       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 635   surf_network_model->common_public->states.failed_action_set =
 636       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 637   surf_network_model->common_public->states.done_action_set =
 638       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 639
 640   surf_network_model->common_public->name_service = name_service;
 641   surf_network_model->common_public->get_resource_name =
 642       get_resource_name;
 643   surf_network_model->common_public->action_get_state =
 644       surf_action_get_state;
 645   surf_network_model->common_public->action_get_start_time =
 646       surf_action_get_start_time;
 647   surf_network_model->common_public->action_get_finish_time =
 648       surf_action_get_finish_time;
 649   surf_network_model->common_public->action_free = action_free;
 650   surf_network_model->common_public->action_use = action_use;
 651   surf_network_model->common_public->action_cancel = action_cancel;
 652   surf_network_model->common_public->action_recycle = action_recycle;
 653   surf_network_model->common_public->action_change_state =
 654       action_change_state;
 655   surf_network_model->common_public->action_set_data =
 656       surf_action_set_data;
 657   surf_network_model->common_public->name = "network";
 658
 659   surf_network_model->common_private->resource_used = resource_used;
 660   surf_network_model->common_private->share_resources = share_resources;
 661   surf_network_model->common_private->update_actions_state =
 662       update_actions_state;
 663   surf_network_model->common_private->update_resource_state =
 664       update_resource_state;
 665   surf_network_model->common_private->finalize = finalize;
 666
 667   surf_network_model->common_public->suspend = action_suspend;
 668   surf_network_model->common_public->resume = action_resume;
 669   surf_network_model->common_public->is_suspended = action_is_suspended;
 670   surf_cpu_model->common_public->set_max_duration =
 671       action_set_max_duration;
 672
 673   surf_network_model->extension_public->communicate = communicate;
 674   surf_network_model->extension_public->get_route = get_route;
 675   surf_network_model->extension_public->get_route_size = get_route_size;
 676   surf_network_model->extension_public->get_link_name = get_link_name;
 677   surf_network_model->extension_public->get_link_bandwidth =
 678       get_link_bandwidth;
 679   surf_network_model->extension_public->get_link_latency =
 680       get_link_latency;
 681
 682   surf_network_model->common_public->get_properties =  get_properties;
 683
 684   link_set = xbt_dict_new();
 685   network_card_set = xbt_dict_new();
 686
 687   if (!network_maxmin_system)
 688     network_maxmin_system = lmm_system_new();
 689 }
 690
 691 /***************************************************************************/
 692 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 693 /***************************************************************************/
 694 /* @TechReport{      rr-lip2002-40, */
 695 /*   author        = {Henri Casanova and Loris Marchal}, */
 696 /*   institution   = {LIP}, */
 697 /*   title         = {A Network Model for Simulation of Grid Application}, */
 698 /*   number        = {2002-40}, */
 699 /*   month         = {oct}, */
 700 /*   year          = {2002} */
 701 /* } */
 702 void surf_network_model_init_CM02(const char *filename)
 703 {
 704
 705   if (surf_network_model)
 706     return;
 707   surf_network_model_init_internal();
 708   define_callbacks(filename);
 709   xbt_dynar_push(model_list, &surf_network_model);
 710   network_solve = lmm_solve;
 711
 712   update_model_description(surf_network_model_description,
 713                               surf_network_model_description_size,
 714                               "CM02",
 715                               (surf_model_t) surf_network_model);
 716 }
 717
 718 void surf_network_model_init_Reno(const char *filename)
 719 {
 720   if (surf_network_model)
 721     return;
 722   surf_network_model_init_internal();
 723   define_callbacks(filename);
 724
 725   xbt_dynar_push(model_list, &surf_network_model);
 726   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 727                                     func_reno_fpi);
 728   network_solve = lagrange_solve;
 729
 730   update_model_description(surf_network_model_description,
 731                               surf_network_model_description_size,
 732                               "Reno",
 733                               (surf_model_t) surf_network_model);
 734 }
 735
 736 void surf_network_model_init_Vegas(const char *filename)
 737 {
 738   if (surf_network_model)
 739     return;
 740   surf_network_model_init_internal();
 741   define_callbacks(filename);
 742
 743   xbt_dynar_push(model_list, &surf_network_model);
 744   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 745                                     func_vegas_fpi);
 746   network_solve = lagrange_solve;
 747
 748   update_model_description(surf_network_model_description,
 749                               surf_network_model_description_size,
 750                               "Vegas",
 751                               (surf_model_t) surf_network_model);
 752 }
 753
 754 #ifdef HAVE_SDP
 755 void surf_network_model_init_SDP(const char *filename)
 756 {
 757   if (surf_network_model)
 758     return;
 759   surf_network_model_init_internal();
 760   define_callbacks(filename);
 761
 762   xbt_dynar_push(model_list, &surf_network_model);
 763   network_solve = sdp_solve;
 764
 765   update_model_description(surf_network_model_description,
 766                               surf_network_model_description_size,
 767                               "SDP",
 768                               (surf_model_t) surf_network_model);
 769 }
 770 #endif