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