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