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