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 #include "xbt/str.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 surf_network_model_t surf_network_model = NULL;
  16 static lmm_system_t network_maxmin_system = NULL;
  17 static void (*network_solve) (lmm_system_t) = NULL;
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 double latency_factor = 1.0; /* default value */
  22
  23 int card_number = 0;
  24 int host_number = 0;
  25 link_CM02_t **routing_table = NULL;
  26 int *routing_table_size = NULL;
  27 static link_CM02_t loopback = NULL;
  28
  29 static void create_routing_table(void)
  30 {
  31   routing_table =
  32       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  33   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  34 }
  35
  36 static void link_free(void *nw_link)
  37 {
  38   free(((link_CM02_t) nw_link)->name);
  39   xbt_dict_free(&(((link_CM02_t)nw_link)->properties));
  40   free(nw_link);
  41 }
  42
  43 static link_CM02_t link_new(char *name,
  44                             double bw_initial,
  45                             tmgr_trace_t bw_trace,
  46                             double lat_initial,
  47                             tmgr_trace_t lat_trace,
  48                             e_surf_link_state_t
  49                             state_initial,
  50                             tmgr_trace_t state_trace,
  51                             e_surf_link_sharing_policy_t
  52                             policy, xbt_dict_t properties)
  53 {
  54   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  55   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  56               "Link '%s' declared several times in the platform file.", name);
  57
  58   nw_link->model = (surf_model_t) surf_network_model;
  59   nw_link->name = name;
  60   nw_link->bw_current = bw_initial;
  61   if (bw_trace)
  62     nw_link->bw_event =
  63         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  64   nw_link->lat_current = lat_initial;
  65   if (lat_trace)
  66     nw_link->lat_event =
  67         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  68   nw_link->state_current = state_initial;
  69   if (state_trace)
  70     nw_link->state_event =
  71         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  72
  73   nw_link->constraint =
  74       lmm_constraint_new(network_maxmin_system, nw_link,
  75                          nw_link->bw_current);
  76
  77   if (policy == SURF_LINK_FATPIPE)
  78     lmm_constraint_shared(nw_link->constraint);
  79
  80   nw_link->properties = properties;
  81
  82   current_property_set = properties;
  83
  84   xbt_dict_set(link_set, name, nw_link, link_free);
  85
  86   return nw_link;
  87 }
  88
  89 static void network_card_free(void *nw_card)
  90 {
  91   free(((network_card_CM02_t) nw_card)->name);
  92   free(nw_card);
  93 }
  94
  95 static int network_card_new(const char *card_name)
  96 {
  97   network_card_CM02_t card =
  98       xbt_dict_get_or_null(network_card_set, card_name);
  99
 100   if (!card) {
 101     card = xbt_new0(s_network_card_CM02_t, 1);
 102     card->name = xbt_strdup(card_name);
 103     card->id = host_number++;
 104     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 105   }
 106   return card->id;
 107 }
 108
 109 static void route_new(int src_id, int dst_id,
 110                       link_CM02_t * link_list, int nb_link)
 111 {
 112   ROUTE_SIZE(src_id, dst_id) = nb_link;
 113   ROUTE(src_id, dst_id) = link_list =
 114       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 115 }
 116
 117 static void parse_link_init(void)
 118 {
 119   char *name_link;
 120   double bw_initial;
 121   tmgr_trace_t bw_trace;
 122   double lat_initial;
 123   tmgr_trace_t lat_trace;
 124   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 125   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 126   tmgr_trace_t state_trace;
 127
 128   name_link = xbt_strdup(A_surfxml_link_id);
 129   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 130   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 131   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 132   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 133
 134   xbt_assert0((A_surfxml_link_state ==
 135                A_surfxml_link_state_ON)
 136               || (A_surfxml_link_state ==
 137                   A_surfxml_link_state_OFF), "Invalid state");
 138   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 139     state_initial_link = SURF_LINK_ON;
 140   else if (A_surfxml_link_state ==
 141            A_surfxml_link_state_OFF)
 142     state_initial_link = SURF_LINK_OFF;
 143
 144   if (A_surfxml_link_sharing_policy ==
 145       A_surfxml_link_sharing_policy_SHARED)
 146     policy_initial_link = SURF_LINK_SHARED;
 147   else if (A_surfxml_link_sharing_policy ==
 148            A_surfxml_link_sharing_policy_FATPIPE)
 149     policy_initial_link = SURF_LINK_FATPIPE;
 150
 151   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 152
 153   link_new(name_link, bw_initial, bw_trace,
 154                    lat_initial, lat_trace, state_initial_link, state_trace,
 155                    policy_initial_link, xbt_dict_new());
 156
 157 }
 158
 159 static int src_id = -1;
 160 static int dst_id = -1;
 161
 162 static void parse_route_set_endpoints(void)
 163 {
 164   src_id = network_card_new(A_surfxml_route_src);
 165   dst_id = network_card_new(A_surfxml_route_dst);
 166   route_action = A_surfxml_route_action;
 167 }
 168
 169 static void parse_route_set_route(void)
 170 {
 171   char *name;
 172   if (src_id != -1 && dst_id != -1) {
 173     name = bprintf("%x#%x",src_id, dst_id);
 174     manage_route(route_table, name, route_action, 0);
 175     free(name);
 176   }
 177 }
 178
 179 static void add_loopback(void)
 180 {
 181   int i;
 182   /* Adding loopback if needed */
 183   for (i = 0; i < host_number; i++)
 184     if (!ROUTE_SIZE(i, i)) {
 185       if (!loopback)
 186         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 187                                     498000000, NULL, 0.000015, NULL,
 188                                     SURF_LINK_ON, NULL,
 189                                     SURF_LINK_FATPIPE,NULL);
 190       ROUTE_SIZE(i, i) = 1;
 191       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 192       ROUTE(i, i)[0] = loopback;
 193     }
 194 }
 195
 196 static void add_route(void)
 197 {
 198   xbt_ex_t e;
 199   int nb_link = 0;
 200   unsigned int cpt = 0;
 201   int link_list_capacity = 0;
 202   link_CM02_t *link_list = NULL;
 203   xbt_dict_cursor_t cursor = NULL;
 204   char *key,*data, *end;
 205   const char *sep = "#";
 206   xbt_dynar_t links, keys;
 207
 208   if (routing_table == NULL) create_routing_table();
 209
 210   xbt_dict_foreach(route_table, cursor, key, data) {
 211           char* link = NULL;
 212     nb_link = 0;
 213     links = (xbt_dynar_t)data;
 214     keys = xbt_str_split_str(key, sep);
 215
 216     link_list_capacity = xbt_dynar_length(links);
 217     link_list = xbt_new(link_CM02_t, link_list_capacity);
 218
 219     src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
 220     dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
 221     xbt_dynar_free(&keys);
 222
 223     xbt_dynar_foreach (links, cpt, link) {
 224       TRY {
 225         link_list[nb_link++] = xbt_dict_get(link_set, link);
 226       }
 227       CATCH(e) {
 228         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 229       }
 230     }
 231     route_new(src_id, dst_id, link_list, nb_link);
 232    }
 233 }
 234
 235 static void count_hosts(void)
 236 {
 237    host_number++;
 238 }
 239
 240
 241 static void add_traces(void) {
 242    xbt_dict_cursor_t cursor=NULL;
 243    char *trace_name,*elm;
 244
 245    static int called = 0;
 246    if (called) return;
 247    called = 1;
 248
 249    /* connect all traces relative to network */
 250    xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 251       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 252       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 253
 254       xbt_assert1(link, "Link %s undefined", elm);
 255       xbt_assert1(trace, "Trace %s undefined", trace_name);
 256
 257       link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 258    }
 259
 260    xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 261       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 262       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 263
 264       xbt_assert1(link, "Link %s undefined", elm);
 265       xbt_assert1(trace, "Trace %s undefined", trace_name);
 266
 267       link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 268    }
 269
 270    xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 271       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 272       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 273
 274       xbt_assert1(link, "Link %s undefined", elm);
 275       xbt_assert1(trace, "Trace %s undefined", trace_name);
 276
 277       link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 278    }
 279 }
 280
 281 static void define_callbacks(const char *file)
 282 {
 283   /* Figuring out the network links */
 284   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 285   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 286   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 287   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 288   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 289   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 290   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 291 }
 292
 293 static void *name_service(const char *name)
 294 {
 295   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 296   return card;
 297 }
 298
 299 static const char *get_resource_name(void *resource_id)
 300 {
 301   return ((network_card_CM02_t) resource_id)->name;
 302 }
 303
 304 static int resource_used(void *resource_id)
 305 {
 306   return lmm_constraint_used(network_maxmin_system,
 307                              ((link_CM02_t) resource_id)->
 308                              constraint);
 309 }
 310
 311 static int action_free(surf_action_t action)
 312 {
 313   action->refcount --;
 314   if (!action->refcount ) {
 315     xbt_swag_remove(action, action->state_set);
 316     if (((surf_action_network_CM02_t) action)->variable)
 317       lmm_variable_free(network_maxmin_system,
 318                         ((surf_action_network_CM02_t) action)->variable);
 319     free(action);
 320     return 1;
 321   }
 322   return 0;
 323 }
 324
 325 static void action_use(surf_action_t action)
 326 {
 327   action->refcount ++;
 328 }
 329
 330 static void action_cancel(surf_action_t action)
 331 {
 332   return;
 333 }
 334
 335 static void action_recycle(surf_action_t action)
 336 {
 337   return;
 338 }
 339
 340 static void action_change_state(surf_action_t action,
 341                                 e_surf_action_state_t state)
 342 {
 343 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 344 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 345 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 346 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 347 /*     } */
 348
 349   surf_action_change_state(action, state);
 350   return;
 351 }
 352
 353 static double share_resources(double now)
 354 {
 355   s_surf_action_network_CM02_t s_action;
 356   surf_action_network_CM02_t action = NULL;
 357   xbt_swag_t running_actions =
 358       surf_network_model->common_public->states.running_action_set;
 359   double min;
 360
 361   min = generic_maxmin_share_resources(running_actions,
 362                                        xbt_swag_offset(s_action,
 363                                                        variable),
 364                                        network_maxmin_system,
 365                                        network_solve);
 366
 367 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 368
 369   xbt_swag_foreach(action, running_actions) {
 370     if (action->latency > 0) {
 371       if (min < 0)
 372         min = action->latency;
 373       else if (action->latency < min)
 374         min = action->latency;
 375     }
 376   }
 377
 378   return min;
 379 }
 380
 381 static void update_actions_state(double now, double delta)
 382 {
 383   double deltap = 0.0;
 384   surf_action_network_CM02_t action = NULL;
 385   surf_action_network_CM02_t next_action = NULL;
 386   xbt_swag_t running_actions =
 387       surf_network_model->common_public->states.running_action_set;
 388   /*
 389      xbt_swag_t failed_actions =
 390      surf_network_model->common_public->states.failed_action_set;
 391    */
 392
 393   xbt_swag_foreach_safe(action, next_action, running_actions) {
 394     deltap = delta;
 395     if (action->latency > 0) {
 396       if (action->latency > deltap) {
 397         double_update(&(action->latency), deltap);
 398         deltap = 0.0;
 399       } else {
 400         double_update(&(deltap), action->latency);
 401         action->latency = 0.0;
 402       }
 403       if ((action->latency == 0.0) && !(action->suspended))
 404         lmm_update_variable_weight(network_maxmin_system, action->variable,
 405                                    action->lat_current);
 406     }
 407     double_update(&(action->generic_action.remains),
 408                   lmm_variable_getvalue(action->variable) * deltap);
 409     if (action->generic_action.max_duration != NO_MAX_DURATION)
 410       double_update(&(action->generic_action.max_duration), delta);
 411
 412     if ((action->generic_action.remains <= 0) &&
 413         (lmm_get_variable_weight(action->variable) > 0)) {
 414       action->generic_action.finish = surf_get_clock();
 415       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 416     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 417                (action->generic_action.max_duration <= 0)) {
 418       action->generic_action.finish = surf_get_clock();
 419       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 420     }
 421   }
 422
 423   return;
 424 }
 425
 426 static void update_resource_state(void *id,
 427                                   tmgr_trace_event_t event_type,
 428                                   double value, double date)
 429 {
 430   link_CM02_t nw_link = id;
 431   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 432   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 433   /*     value, event_type); */
 434
 435   if (event_type == nw_link->bw_event) {
 436     nw_link->bw_current = value;
 437     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 438                                 nw_link->bw_current);
 439   } else if (event_type == nw_link->lat_event) {
 440     double delta = value - nw_link->lat_current;
 441     lmm_variable_t var = NULL;
 442     lmm_element_t elem = NULL;
 443     surf_action_network_CM02_t action = NULL;
 444
 445     nw_link->lat_current = value;
 446     while ((var= lmm_get_var_from_cnst
 447            (network_maxmin_system, nw_link->constraint, &elem))) {
 448       action = lmm_variable_id(var);
 449       action->lat_current += delta;
 450       if (action->rate < 0)
 451         lmm_update_variable_bound(network_maxmin_system, action->variable,
 452                                   SG_TCP_CTE_GAMMA / (2.0 *
 453                                                       action->
 454                                                       lat_current));
 455       else
 456         lmm_update_variable_bound(network_maxmin_system, action->variable,
 457                                   min(action->rate,
 458                                       SG_TCP_CTE_GAMMA / (2.0 *
 459                                                           action->
 460                                                           lat_current)));
 461       if (!(action->suspended))
 462         lmm_update_variable_weight(network_maxmin_system, action->variable,
 463                                    action->lat_current);
 464
 465     }
 466   } else if (event_type == nw_link->state_event) {
 467     if (value > 0)
 468       nw_link->state_current = SURF_LINK_ON;
 469     else {
 470       lmm_constraint_t cnst = nw_link->constraint;
 471       lmm_variable_t var = NULL;
 472       lmm_element_t elem = NULL;
 473
 474       nw_link->state_current = SURF_LINK_OFF;
 475       while ((var= lmm_get_var_from_cnst
 476               (network_maxmin_system, cnst, &elem))) {
 477         surf_action_t action = lmm_variable_id(var) ;
 478
 479         if(surf_action_get_state(action)==SURF_ACTION_RUNNING ||
 480            surf_action_get_state(action)==SURF_ACTION_READY) {
 481           action->finish = date;
 482           action_change_state( action, SURF_ACTION_FAILED);
 483         }
 484       }
 485     }
 486   } else {
 487     CRITICAL0("Unknown event ! \n");
 488     xbt_abort();
 489   }
 490
 491   return;
 492 }
 493
 494 static surf_action_t communicate(void *src, void *dst, double size,
 495                                  double rate)
 496 {
 497   surf_action_network_CM02_t action = NULL;
 498   /* LARGE PLATFORMS HACK:
 499      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 500      Use the cluster_id for ->id */
 501   network_card_CM02_t card_src = src;
 502   network_card_CM02_t card_dst = dst;
 503   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 504   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 505   /* LARGE PLATFORMS HACK:
 506      total_route_size = route_size + src->link_nb + dst->nb */
 507   int i;
 508
 509   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 510   /* LARGE PLATFORMS HACK:
 511      assert on total_route_size */
 512   xbt_assert2(route_size,
 513               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 514               card_src->name, card_dst->name);
 515
 516   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 517
 518   action->generic_action.refcount  = 1;
 519   action->generic_action.cost = size;
 520   action->generic_action.remains = size;
 521   action->generic_action.max_duration = NO_MAX_DURATION;
 522   action->generic_action.start = surf_get_clock();
 523   action->generic_action.finish = -1.0;
 524   action->generic_action.model_type =
 525       (surf_model_t) surf_network_model;
 526   action->suspended = 0;        /* Should be useless because of the
 527                                    calloc but it seems to help valgrind... */
 528   action->generic_action.state_set =
 529       surf_network_model->common_public->states.running_action_set;
 530   for (i = 0; i < route_size; i++)
 531     if(route[i]->state_current == SURF_LINK_OFF) {
 532       action->generic_action.state_set =
 533         surf_network_model->common_public->states.failed_action_set;
 534       break;
 535     }
 536
 537   xbt_swag_insert(action, action->generic_action.state_set);
 538   action->rate = rate;
 539
 540   action->latency = 0.0;
 541   for (i = 0; i < route_size; i++)
 542     action->latency += route[i]->lat_current;
 543   /* LARGE PLATFORMS HACK:
 544      Add src->link and dst->link latencies */
 545   action->lat_current = action->latency;
 546   action->latency *= latency_factor;
 547
 548
 549   /* LARGE PLATFORMS HACK:
 550      lmm_variable_new(..., total_route_size)*/
 551   if (action->latency > 0)
 552     action->variable =
 553         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 554                          route_size);
 555   else
 556     action->variable =
 557         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 558                          route_size);
 559
 560   if (action->rate < 0) {
 561     if (action->lat_current > 0)
 562       lmm_update_variable_bound(network_maxmin_system, action->variable,
 563                                 SG_TCP_CTE_GAMMA / (2.0 *
 564                                                     action->lat_current));
 565     else
 566       lmm_update_variable_bound(network_maxmin_system, action->variable,
 567                                 -1.0);
 568   } else {
 569     if (action->lat_current > 0)
 570       lmm_update_variable_bound(network_maxmin_system, action->variable,
 571                                 min(action->rate,
 572                                     SG_TCP_CTE_GAMMA / (2.0 *
 573                                                         action->
 574                                                         lat_current)));
 575     else
 576       lmm_update_variable_bound(network_maxmin_system, action->variable,
 577                                 action->rate);
 578   }
 579
 580   for (i = 0; i < route_size; i++)
 581     lmm_expand(network_maxmin_system, route[i]->constraint,
 582                action->variable, 1.0);
 583   /* LARGE PLATFORMS HACK:
 584      expand also with src->link and dst->link */
 585
 586   XBT_OUT;
 587
 588   return (surf_action_t) action;
 589 }
 590
 591 /* returns an array of link_CM02_t */
 592 static const void **get_route(void *src, void *dst)
 593 {
 594   network_card_CM02_t card_src = src;
 595   network_card_CM02_t card_dst = dst;
 596   return (const void **) ROUTE(card_src->id, card_dst->id);
 597 }
 598
 599 static int get_route_size(void *src, void *dst)
 600 {
 601   network_card_CM02_t card_src = src;
 602   network_card_CM02_t card_dst = dst;
 603   return ROUTE_SIZE(card_src->id, card_dst->id);
 604 }
 605
 606 static const char *get_link_name(const void *link)
 607 {
 608   return ((link_CM02_t) link)->name;
 609 }
 610
 611 static double get_link_bandwidth(const void *link)
 612 {
 613   return ((link_CM02_t) link)->bw_current;
 614 }
 615
 616 static double get_link_latency(const void *link)
 617 {
 618   return ((link_CM02_t) link)->lat_current;
 619 }
 620
 621 static int link_shared(const void *link)
 622 {
 623   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 624 }
 625
 626 static xbt_dict_t get_properties(void *link)
 627 {
 628  return ((link_CM02_t) link)->properties;
 629 }
 630
 631 static void action_suspend(surf_action_t action)
 632 {
 633   ((surf_action_network_CM02_t) action)->suspended = 1;
 634   lmm_update_variable_weight(network_maxmin_system,
 635                              ((surf_action_network_CM02_t) action)->
 636                              variable, 0.0);
 637 }
 638
 639 static void action_resume(surf_action_t action)
 640 {
 641   if (((surf_action_network_CM02_t) action)->suspended) {
 642     lmm_update_variable_weight(network_maxmin_system,
 643                                ((surf_action_network_CM02_t) action)->
 644                                variable,
 645                                ((surf_action_network_CM02_t) action)->
 646                                lat_current);
 647     ((surf_action_network_CM02_t) action)->suspended = 0;
 648   }
 649 }
 650
 651 static int action_is_suspended(surf_action_t action)
 652 {
 653   return ((surf_action_network_CM02_t) action)->suspended;
 654 }
 655
 656 static void action_set_max_duration(surf_action_t action, double duration)
 657 {
 658   action->max_duration = duration;
 659 }
 660
 661 static void finalize(void)
 662 {
 663   int i, j;
 664
 665   xbt_dict_free(&network_card_set);
 666   xbt_dict_free(&link_set);
 667   xbt_swag_free(surf_network_model->common_public->states.
 668                 ready_action_set);
 669   xbt_swag_free(surf_network_model->common_public->states.
 670                 running_action_set);
 671   xbt_swag_free(surf_network_model->common_public->states.
 672                 failed_action_set);
 673   xbt_swag_free(surf_network_model->common_public->states.
 674                 done_action_set);
 675   free(surf_network_model->common_public);
 676   free(surf_network_model->common_private);
 677   free(surf_network_model->extension_public);
 678
 679   free(surf_network_model);
 680   surf_network_model = NULL;
 681
 682   loopback = NULL;
 683   for (i = 0; i < host_number; i++)
 684     for (j = 0; j < host_number; j++)
 685       free(ROUTE(i, j));
 686   free(routing_table);
 687   routing_table = NULL;
 688   free(routing_table_size);
 689   routing_table_size = NULL;
 690   host_number = 0;
 691   lmm_system_free(network_maxmin_system);
 692   network_maxmin_system = NULL;
 693 }
 694
 695 static void surf_network_model_init_internal(void)
 696 {
 697   s_surf_action_t action;
 698
 699   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 700
 701   surf_network_model->common_private =
 702       xbt_new0(s_surf_model_private_t, 1);
 703   surf_network_model->common_public =
 704       xbt_new0(s_surf_model_public_t, 1);
 705   surf_network_model->extension_public =
 706       xbt_new0(s_surf_network_model_extension_public_t, 1);
 707
 708   surf_network_model->common_public->states.ready_action_set =
 709       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 710   surf_network_model->common_public->states.running_action_set =
 711       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 712   surf_network_model->common_public->states.failed_action_set =
 713       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 714   surf_network_model->common_public->states.done_action_set =
 715       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 716
 717   surf_network_model->common_public->name_service = name_service;
 718   surf_network_model->common_public->get_resource_name =
 719       get_resource_name;
 720   surf_network_model->common_public->action_get_state =
 721       surf_action_get_state;
 722   surf_network_model->common_public->action_get_start_time =
 723       surf_action_get_start_time;
 724   surf_network_model->common_public->action_get_finish_time =
 725       surf_action_get_finish_time;
 726   surf_network_model->common_public->action_free = action_free;
 727   surf_network_model->common_public->action_use = action_use;
 728   surf_network_model->common_public->action_cancel = action_cancel;
 729   surf_network_model->common_public->action_recycle = action_recycle;
 730   surf_network_model->common_public->action_change_state =
 731       action_change_state;
 732   surf_network_model->common_public->action_set_data =
 733       surf_action_set_data;
 734   surf_network_model->common_public->name = "network";
 735
 736   surf_network_model->common_private->resource_used = resource_used;
 737   surf_network_model->common_private->share_resources = share_resources;
 738   surf_network_model->common_private->update_actions_state =
 739       update_actions_state;
 740   surf_network_model->common_private->update_resource_state =
 741       update_resource_state;
 742   surf_network_model->common_private->finalize = finalize;
 743
 744   surf_network_model->common_public->suspend = action_suspend;
 745   surf_network_model->common_public->resume = action_resume;
 746   surf_network_model->common_public->is_suspended = action_is_suspended;
 747   surf_cpu_model->common_public->set_max_duration =
 748       action_set_max_duration;
 749
 750   surf_network_model->extension_public->communicate = communicate;
 751   surf_network_model->extension_public->get_route = get_route;
 752   surf_network_model->extension_public->get_route_size = get_route_size;
 753   surf_network_model->extension_public->get_link_name = get_link_name;
 754   surf_network_model->extension_public->get_link_bandwidth =
 755       get_link_bandwidth;
 756   surf_network_model->extension_public->get_link_latency =
 757       get_link_latency;
 758   surf_network_model->extension_public->link_shared =
 759       link_shared;
 760
 761   surf_network_model->common_public->get_properties =  get_properties;
 762
 763   link_set = xbt_dict_new();
 764   network_card_set = xbt_dict_new();
 765
 766   if (!network_maxmin_system)
 767     network_maxmin_system = lmm_system_new();
 768 }
 769
 770 /***************************************************************************/
 771 /* New TCP sharing model based on thesis experimantation and discussions.  */
 772 /***************************************************************************/
 773 void surf_network_model_init_LegrandVelho(const char *filename)
 774 {
 775   if (surf_network_model)
 776     return;
 777   surf_network_model_init_internal();
 778   define_callbacks(filename);
 779   xbt_dynar_push(model_list, &surf_network_model);
 780   network_solve = lmm_solve;
 781
 782   latency_factor = 10.4;
 783
 784   update_model_description(surf_network_model_description,
 785                            "LegrandVelho",
 786                            (surf_model_t) surf_network_model);
 787   INFO0("LegrandVelho Model was chosen!!");
 788 }
 789
 790 /***************************************************************************/
 791 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 792 /***************************************************************************/
 793 /* @TechReport{      rr-lip2002-40, */
 794 /*   author        = {Henri Casanova and Loris Marchal}, */
 795 /*   institution   = {LIP}, */
 796 /*   title         = {A Network Model for Simulation of Grid Application}, */
 797 /*   number        = {2002-40}, */
 798 /*   month         = {oct}, */
 799 /*   year          = {2002} */
 800 /* } */
 801 void surf_network_model_init_CM02(const char *filename)
 802 {
 803
 804   if (surf_network_model)
 805     return;
 806   surf_network_model_init_internal();
 807   define_callbacks(filename);
 808   xbt_dynar_push(model_list, &surf_network_model);
 809   network_solve = lmm_solve;
 810
 811   update_model_description(surf_network_model_description,
 812                            "CM02",
 813                            (surf_model_t) surf_network_model);
 814 }
 815
 816 void surf_network_model_init_Reno(const char *filename)
 817 {
 818   if (surf_network_model)
 819     return;
 820   surf_network_model_init_internal();
 821   define_callbacks(filename);
 822
 823   xbt_dynar_push(model_list, &surf_network_model);
 824   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 825                                     func_reno_fpi);
 826   network_solve = lagrange_solve;
 827
 828   update_model_description(surf_network_model_description,
 829                            "Reno",
 830                            (surf_model_t) surf_network_model);
 831 }
 832
 833
 834 void surf_network_model_init_Reno2(const char *filename)
 835 {
 836   if (surf_network_model)
 837     return;
 838   surf_network_model_init_internal();
 839   define_callbacks(filename);
 840
 841   xbt_dynar_push(model_list, &surf_network_model);
 842   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 843                                     func_reno2_fpi);
 844   network_solve = lagrange_solve;
 845
 846   update_model_description(surf_network_model_description,
 847                            "Reno2",
 848                            (surf_model_t) surf_network_model);
 849 }
 850
 851 void surf_network_model_init_Vegas(const char *filename)
 852 {
 853   if (surf_network_model)
 854     return;
 855   surf_network_model_init_internal();
 856   define_callbacks(filename);
 857
 858   xbt_dynar_push(model_list, &surf_network_model);
 859   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 860                                     func_vegas_fpi);
 861   network_solve = lagrange_solve;
 862
 863   update_model_description(surf_network_model_description,
 864                            "Vegas",
 865                            (surf_model_t) surf_network_model);
 866 }
 867
 868 #ifdef HAVE_SDP
 869  void surf_network_model_init_SDP(const char *filename)
 870 {
 871   if (surf_network_model)
 872     return;
 873   surf_network_model_init_internal();
 874   define_callbacks(filename);
 875
 876   xbt_dynar_push(model_list, &surf_network_model);
 877   network_solve = sdp_solve;
 878
 879   update_model_description(surf_network_model_description,
 880                            "SDP",
 881                            (surf_model_t) surf_network_model);
 882 }
 883 #endif