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 "cpu_private.h"
  10 #include "xbt/log.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 = card_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 *), &free_string);
 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
 221     xbt_dynar_foreach (links, cpt, link) {
 222       TRY {
 223         link_list[nb_link++] = xbt_dict_get(link_set, link);
 224       }
 225       CATCH(e) {
 226         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 227       }
 228     }
 229     route_new(src_id, dst_id, link_list, nb_link);
 230    }
 231
 232    xbt_dict_free(&route_table);
 233
 234 }
 235
 236 static void count_hosts(void)
 237 {
 238    host_number++;
 239 }
 240
 241 static int called = 0;
 242
 243 static void add_traces(void)
 244 {
 245    xbt_dynar_t trace_connect = NULL;
 246    unsigned int cpt;
 247    int connect_element, connect_kind;
 248    char *value, *trace_id, *connector_id;
 249    link_CM02_t link;
 250    cpu_Cas01_t host = NULL;
 251    tmgr_trace_t trace;
 252
 253    if (called) return;
 254    called = 1;
 255
 256    /*for all trace connects parse them and update traces for hosts or links */
 257    xbt_dynar_foreach (traces_connect_list, cpt, value) {
 258      trace_connect = xbt_str_split_str(value, "#");
 259      trace_id        = xbt_dynar_get_as(trace_connect, 0, char*);
 260      connect_element = atoi(xbt_dynar_get_as(trace_connect, 1, char*));
 261      connect_kind    = atoi(xbt_dynar_get_as(trace_connect, 2, char*));
 262      connector_id    = xbt_dynar_get_as(trace_connect, 3, char*);
 263
 264      xbt_assert1((trace = xbt_dict_get_or_null(traces_set_list, trace_id)), "Trace %s undefined", trace_id);
 265
 266      if (connect_element == A_surfxml_trace_c_connect_element_HOST) {
 267         xbt_assert1((host = xbt_dict_get_or_null(cpu_set, connector_id)), "Host %s undefined", connector_id);
 268         switch (connect_kind) {
 269            case A_surfxml_trace_c_connect_kind_AVAILABILITY: host->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, host); break;
 270            case A_surfxml_trace_c_connect_kind_POWER: host->power_event = tmgr_history_add_trace(history, trace, 0.0, 0, host); break;
 271         }
 272      }
 273
 274      if (connect_element == A_surfxml_trace_c_connect_element_LINK) {
 275         xbt_assert1((link = xbt_dict_get_or_null(link_set, connector_id)), "Link %s undefined", connector_id);
 276         switch (connect_kind) {
 277            case A_surfxml_trace_c_connect_kind_AVAILABILITY: link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 278            case A_surfxml_trace_c_connect_kind_BANDWIDTH: link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 279            case A_surfxml_trace_c_connect_kind_LATENCY: link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 280         }
 281      }
 282    }
 283
 284    xbt_dynar_free(&trace_connect);
 285    xbt_dynar_free(&traces_connect_list);
 286    xbt_dict_free(&traces_set_list);
 287 }
 288
 289 static void define_callbacks(const char *file)
 290 {
 291   /* Figuring out the network links */
 292   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 293   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 294   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
 295   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 296   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
 297   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 298   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_data);
 299   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 300   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 301   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 302   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
 303   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
 304   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
 305   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
 306   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
 307   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
 308   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
 309   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
 310 }
 311
 312 static void *name_service(const char *name)
 313 {
 314   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 315   return card;
 316 }
 317
 318 static const char *get_resource_name(void *resource_id)
 319 {
 320   return ((network_card_CM02_t) resource_id)->name;
 321 }
 322
 323 static int resource_used(void *resource_id)
 324 {
 325   return lmm_constraint_used(network_maxmin_system,
 326                              ((link_CM02_t) resource_id)->
 327                              constraint);
 328 }
 329
 330 static int action_free(surf_action_t action)
 331 {
 332   action->using--;
 333   if (!action->using) {
 334     xbt_swag_remove(action, action->state_set);
 335     if (((surf_action_network_CM02_t) action)->variable)
 336       lmm_variable_free(network_maxmin_system,
 337                         ((surf_action_network_CM02_t) action)->variable);
 338     free(action);
 339     return 1;
 340   }
 341   return 0;
 342 }
 343
 344 static void action_use(surf_action_t action)
 345 {
 346   action->using++;
 347 }
 348
 349 static void action_cancel(surf_action_t action)
 350 {
 351   return;
 352 }
 353
 354 static void action_recycle(surf_action_t action)
 355 {
 356   return;
 357 }
 358
 359 static void action_change_state(surf_action_t action,
 360                                 e_surf_action_state_t state)
 361 {
 362 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 363 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 364 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 365 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 366 /*     } */
 367
 368   surf_action_change_state(action, state);
 369   return;
 370 }
 371
 372 static double share_resources(double now)
 373 {
 374   s_surf_action_network_CM02_t s_action;
 375   surf_action_network_CM02_t action = NULL;
 376   xbt_swag_t running_actions =
 377       surf_network_model->common_public->states.running_action_set;
 378   double min;
 379
 380   min = generic_maxmin_share_resources(running_actions,
 381                                        xbt_swag_offset(s_action,
 382                                                        variable),
 383                                        network_maxmin_system,
 384                                        network_solve);
 385
 386   xbt_swag_foreach(action, running_actions) {
 387     if (action->latency > 0) {
 388       if (min < 0)
 389         min = action->latency;
 390       else if (action->latency < min)
 391         min = action->latency;
 392     }
 393   }
 394
 395   return min;
 396 }
 397
 398 static void update_actions_state(double now, double delta)
 399 {
 400   double deltap = 0.0;
 401   surf_action_network_CM02_t action = NULL;
 402   surf_action_network_CM02_t next_action = NULL;
 403   xbt_swag_t running_actions =
 404       surf_network_model->common_public->states.running_action_set;
 405   /*
 406      xbt_swag_t failed_actions =
 407      surf_network_model->common_public->states.failed_action_set;
 408    */
 409
 410   xbt_swag_foreach_safe(action, next_action, running_actions) {
 411     deltap = delta;
 412     if (action->latency > 0) {
 413       if (action->latency > deltap) {
 414         double_update(&(action->latency), deltap);
 415         deltap = 0.0;
 416       } else {
 417         double_update(&(deltap), action->latency);
 418         action->latency = 0.0;
 419       }
 420       if ((action->latency == 0.0) && !(action->suspended))
 421         lmm_update_variable_weight(network_maxmin_system, action->variable,
 422                                    action->lat_current);
 423     }
 424     double_update(&(action->generic_action.remains),
 425                   lmm_variable_getvalue(action->variable) * deltap);
 426     if (action->generic_action.max_duration != NO_MAX_DURATION)
 427       double_update(&(action->generic_action.max_duration), delta);
 428
 429     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 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     } else {                    /* Need to check that none of the model has failed */
 440       lmm_constraint_t cnst = NULL;
 441       int i = 0;
 442       link_CM02_t nw_link = NULL;
 443
 444       while ((cnst =
 445               lmm_get_cnst_from_var(network_maxmin_system,
 446                                     action->variable, i++))) {
 447         nw_link = lmm_constraint_id(cnst);
 448         if (nw_link->state_current == SURF_LINK_OFF) {
 449           action->generic_action.finish = surf_get_clock();
 450           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 451           break;
 452         }
 453       }
 454     }
 455   }
 456
 457   return;
 458 }
 459
 460 static void update_resource_state(void *id,
 461                                   tmgr_trace_event_t event_type,
 462                                   double value)
 463 {
 464   link_CM02_t nw_link = id;
 465   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 466   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 467   /*     value, event_type); */
 468
 469   if (event_type == nw_link->bw_event) {
 470     nw_link->bw_current = value;
 471     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 472                                 nw_link->bw_current);
 473   } else if (event_type == nw_link->lat_event) {
 474     double delta = value - nw_link->lat_current;
 475     lmm_variable_t var = NULL;
 476     surf_action_network_CM02_t action = NULL;
 477
 478     nw_link->lat_current = value;
 479     while (lmm_get_var_from_cnst
 480            (network_maxmin_system, nw_link->constraint, &var)) {
 481       action = lmm_variable_id(var);
 482       action->lat_current += delta;
 483       if (action->rate < 0)
 484         lmm_update_variable_bound(network_maxmin_system, action->variable,
 485                                   SG_TCP_CTE_GAMMA / (2.0 *
 486                                                       action->
 487                                                       lat_current));
 488       else
 489         lmm_update_variable_bound(network_maxmin_system, action->variable,
 490                                   min(action->rate,
 491                                       SG_TCP_CTE_GAMMA / (2.0 *
 492                                                           action->
 493                                                           lat_current)));
 494       if (!(action->suspended))
 495         lmm_update_variable_weight(network_maxmin_system, action->variable,
 496                                    action->lat_current);
 497       lmm_update_variable_latency(network_maxmin_system, action->variable,
 498                                   delta);
 499     }
 500   } else if (event_type == nw_link->state_event) {
 501     if (value > 0)
 502       nw_link->state_current = SURF_LINK_ON;
 503     else
 504       nw_link->state_current = SURF_LINK_OFF;
 505   } else {
 506     CRITICAL0("Unknown event ! \n");
 507     xbt_abort();
 508   }
 509
 510   return;
 511 }
 512
 513 static surf_action_t communicate(void *src, void *dst, double size,
 514                                  double rate)
 515 {
 516   surf_action_network_CM02_t action = NULL;
 517   /* LARGE PLATFORMS HACK:
 518      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 519      Use the cluster_id for ->id */
 520   network_card_CM02_t card_src = src;
 521   network_card_CM02_t card_dst = dst;
 522   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 523   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 524   /* LARGE PLATFORMS HACK:
 525      total_route_size = route_size + src->link_nb + dst->nb */
 526   int i;
 527
 528   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 529   /* LARGE PLATFORMS HACK:
 530      assert on total_route_size */
 531   xbt_assert2(route_size,
 532               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 533               card_src->name, card_dst->name);
 534
 535   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 536
 537   action->generic_action.using = 1;
 538   action->generic_action.cost = size;
 539   action->generic_action.remains = size;
 540   action->generic_action.max_duration = NO_MAX_DURATION;
 541   action->generic_action.start = surf_get_clock();
 542   action->generic_action.finish = -1.0;
 543   action->generic_action.model_type =
 544       (surf_model_t) surf_network_model;
 545   action->suspended = 0;        /* Should be useless because of the
 546                                    calloc but it seems to help valgrind... */
 547   action->generic_action.state_set =
 548       surf_network_model->common_public->states.running_action_set;
 549
 550   xbt_swag_insert(action, action->generic_action.state_set);
 551   action->rate = rate;
 552
 553   action->latency = 0.0;
 554   for (i = 0; i < route_size; i++)
 555     action->latency += route[i]->lat_current;
 556   /* LARGE PLATFORMS HACK:
 557      Add src->link and dst->link latencies */
 558   action->lat_current = action->latency;
 559
 560   /* LARGE PLATFORMS HACK:
 561      lmm_variable_new(..., total_route_size)*/
 562   if (action->latency > 0)
 563     action->variable =
 564         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 565                          route_size);
 566   else
 567     action->variable =
 568         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 569                          route_size);
 570
 571   if (action->rate < 0) {
 572     if (action->lat_current > 0)
 573       lmm_update_variable_bound(network_maxmin_system, action->variable,
 574                                 SG_TCP_CTE_GAMMA / (2.0 *
 575                                                     action->lat_current));
 576     else
 577       lmm_update_variable_bound(network_maxmin_system, action->variable,
 578                                 -1.0);
 579   } else {
 580     if (action->lat_current > 0)
 581       lmm_update_variable_bound(network_maxmin_system, action->variable,
 582                                 min(action->rate,
 583                                     SG_TCP_CTE_GAMMA / (2.0 *
 584                                                         action->
 585                                                         lat_current)));
 586     else
 587       lmm_update_variable_bound(network_maxmin_system, action->variable,
 588                                 action->rate);
 589   }
 590   lmm_update_variable_latency(network_maxmin_system, action->variable,
 591                               action->latency);
 592
 593   for (i = 0; i < route_size; i++)
 594     lmm_expand(network_maxmin_system, route[i]->constraint,
 595                action->variable, 1.0);
 596   /* LARGE PLATFORMS HACK:
 597      expand also with src->link and dst->link */
 598
 599   XBT_OUT;
 600
 601   return (surf_action_t) action;
 602 }
 603
 604 /* returns an array of link_CM02_t */
 605 static const void **get_route(void *src, void *dst)
 606 {
 607   network_card_CM02_t card_src = src;
 608   network_card_CM02_t card_dst = dst;
 609   return (const void **) ROUTE(card_src->id, card_dst->id);
 610 }
 611
 612 static int get_route_size(void *src, void *dst)
 613 {
 614   network_card_CM02_t card_src = src;
 615   network_card_CM02_t card_dst = dst;
 616   return ROUTE_SIZE(card_src->id, card_dst->id);
 617 }
 618
 619 static const char *get_link_name(const void *link)
 620 {
 621   return ((link_CM02_t) link)->name;
 622 }
 623
 624 static double get_link_bandwidth(const void *link)
 625 {
 626   return ((link_CM02_t) link)->bw_current;
 627 }
 628
 629 static double get_link_latency(const void *link)
 630 {
 631   return ((link_CM02_t) link)->lat_current;
 632 }
 633
 634 static xbt_dict_t get_properties(void *link)
 635 {
 636  return ((link_CM02_t) link)->properties;
 637 }
 638
 639 static void action_suspend(surf_action_t action)
 640 {
 641   ((surf_action_network_CM02_t) action)->suspended = 1;
 642   lmm_update_variable_weight(network_maxmin_system,
 643                              ((surf_action_network_CM02_t) action)->
 644                              variable, 0.0);
 645 }
 646
 647 static void action_resume(surf_action_t action)
 648 {
 649   if (((surf_action_network_CM02_t) action)->suspended) {
 650     lmm_update_variable_weight(network_maxmin_system,
 651                                ((surf_action_network_CM02_t) action)->
 652                                variable,
 653                                ((surf_action_network_CM02_t) action)->
 654                                lat_current);
 655     ((surf_action_network_CM02_t) action)->suspended = 0;
 656   }
 657 }
 658
 659 static int action_is_suspended(surf_action_t action)
 660 {
 661   return ((surf_action_network_CM02_t) action)->suspended;
 662 }
 663
 664 static void action_set_max_duration(surf_action_t action, double duration)
 665 {
 666   action->max_duration = duration;
 667 }
 668
 669 static void finalize(void)
 670 {
 671   int i, j;
 672
 673   xbt_dict_free(&network_card_set);
 674   xbt_dict_free(&link_set);
 675   xbt_swag_free(surf_network_model->common_public->states.
 676                 ready_action_set);
 677   xbt_swag_free(surf_network_model->common_public->states.
 678                 running_action_set);
 679   xbt_swag_free(surf_network_model->common_public->states.
 680                 failed_action_set);
 681   xbt_swag_free(surf_network_model->common_public->states.
 682                 done_action_set);
 683   free(surf_network_model->common_public);
 684   free(surf_network_model->common_private);
 685   free(surf_network_model->extension_public);
 686
 687   free(surf_network_model);
 688   surf_network_model = NULL;
 689
 690   loopback = NULL;
 691   for (i = 0; i < card_number; i++)
 692     for (j = 0; j < card_number; j++)
 693       free(ROUTE(i, j));
 694   free(routing_table);
 695   routing_table = NULL;
 696   free(routing_table_size);
 697   routing_table_size = NULL;
 698   card_number = 0;
 699 }
 700
 701 static void surf_network_model_init_internal(void)
 702 {
 703   s_surf_action_t action;
 704
 705   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 706
 707   surf_network_model->common_private =
 708       xbt_new0(s_surf_model_private_t, 1);
 709   surf_network_model->common_public =
 710       xbt_new0(s_surf_model_public_t, 1);
 711   surf_network_model->extension_public =
 712       xbt_new0(s_surf_network_model_extension_public_t, 1);
 713
 714   surf_network_model->common_public->states.ready_action_set =
 715       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 716   surf_network_model->common_public->states.running_action_set =
 717       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 718   surf_network_model->common_public->states.failed_action_set =
 719       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 720   surf_network_model->common_public->states.done_action_set =
 721       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 722
 723   surf_network_model->common_public->name_service = name_service;
 724   surf_network_model->common_public->get_resource_name =
 725       get_resource_name;
 726   surf_network_model->common_public->action_get_state =
 727       surf_action_get_state;
 728   surf_network_model->common_public->action_get_start_time =
 729       surf_action_get_start_time;
 730   surf_network_model->common_public->action_get_finish_time =
 731       surf_action_get_finish_time;
 732   surf_network_model->common_public->action_free = action_free;
 733   surf_network_model->common_public->action_use = action_use;
 734   surf_network_model->common_public->action_cancel = action_cancel;
 735   surf_network_model->common_public->action_recycle = action_recycle;
 736   surf_network_model->common_public->action_change_state =
 737       action_change_state;
 738   surf_network_model->common_public->action_set_data =
 739       surf_action_set_data;
 740   surf_network_model->common_public->name = "network";
 741
 742   surf_network_model->common_private->resource_used = resource_used;
 743   surf_network_model->common_private->share_resources = share_resources;
 744   surf_network_model->common_private->update_actions_state =
 745       update_actions_state;
 746   surf_network_model->common_private->update_resource_state =
 747       update_resource_state;
 748   surf_network_model->common_private->finalize = finalize;
 749
 750   surf_network_model->common_public->suspend = action_suspend;
 751   surf_network_model->common_public->resume = action_resume;
 752   surf_network_model->common_public->is_suspended = action_is_suspended;
 753   surf_cpu_model->common_public->set_max_duration =
 754       action_set_max_duration;
 755
 756   surf_network_model->extension_public->communicate = communicate;
 757   surf_network_model->extension_public->get_route = get_route;
 758   surf_network_model->extension_public->get_route_size = get_route_size;
 759   surf_network_model->extension_public->get_link_name = get_link_name;
 760   surf_network_model->extension_public->get_link_bandwidth =
 761       get_link_bandwidth;
 762   surf_network_model->extension_public->get_link_latency =
 763       get_link_latency;
 764
 765   surf_network_model->common_public->get_properties =  get_properties;
 766
 767   link_set = xbt_dict_new();
 768   network_card_set = xbt_dict_new();
 769
 770   if (!network_maxmin_system)
 771     network_maxmin_system = lmm_system_new();
 772 }
 773
 774 /***************************************************************************/
 775 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 776 /***************************************************************************/
 777 /* @TechReport{      rr-lip2002-40, */
 778 /*   author        = {Henri Casanova and Loris Marchal}, */
 779 /*   institution   = {LIP}, */
 780 /*   title         = {A Network Model for Simulation of Grid Application}, */
 781 /*   number        = {2002-40}, */
 782 /*   month         = {oct}, */
 783 /*   year          = {2002} */
 784 /* } */
 785 void surf_network_model_init_CM02(const char *filename)
 786 {
 787
 788   if (surf_network_model)
 789     return;
 790   surf_network_model_init_internal();
 791   define_callbacks(filename);
 792   xbt_dynar_push(model_list, &surf_network_model);
 793   network_solve = lmm_solve;
 794
 795   update_model_description(surf_network_model_description,
 796                               surf_network_model_description_size,
 797                               "CM02",
 798                               (surf_model_t) surf_network_model);
 799 }
 800
 801 void surf_network_model_init_Reno(const char *filename)
 802 {
 803   if (surf_network_model)
 804     return;
 805   surf_network_model_init_internal();
 806   define_callbacks(filename);
 807
 808   xbt_dynar_push(model_list, &surf_network_model);
 809   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 810                                     func_reno_fpi);
 811   network_solve = lagrange_solve;
 812
 813   update_model_description(surf_network_model_description,
 814                               surf_network_model_description_size,
 815                               "Reno",
 816                               (surf_model_t) surf_network_model);
 817 }
 818
 819 void surf_network_model_init_Vegas(const char *filename)
 820 {
 821   if (surf_network_model)
 822     return;
 823   surf_network_model_init_internal();
 824   define_callbacks(filename);
 825
 826   xbt_dynar_push(model_list, &surf_network_model);
 827   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 828                                     func_vegas_fpi);
 829   network_solve = lagrange_solve;
 830
 831   update_model_description(surf_network_model_description,
 832                               surf_network_model_description_size,
 833                               "Vegas",
 834                               (surf_model_t) surf_network_model);
 835 }
 836
 837 #ifdef HAVE_SDP
 838 void surf_network_model_init_SDP(const char *filename)
 839 {
 840   if (surf_network_model)
 841     return;
 842   surf_network_model_init_internal();
 843   define_callbacks(filename);
 844
 845   xbt_dynar_push(model_list, &surf_network_model);
 846   network_solve = sdp_solve;
 847
 848   update_model_description(surf_network_model_description,
 849                               surf_network_model_description_size,
 850                               "SDP",
 851                               (surf_model_t) surf_network_model);
 852 }
 853 #endif