src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  12                                 "Logging specific to the SURF network module");
  13
  14 surf_network_model_t surf_network_model = NULL;
  15 static lmm_system_t network_maxmin_system = NULL;
  16 static void (*network_solve) (lmm_system_t) = NULL;
  17
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 int card_number = 0;
  22 int host_number = 0;
  23 link_CM02_t **routing_table = NULL;
  24 int *routing_table_size = NULL;
  25 static link_CM02_t loopback = NULL;
  26
  27 static void create_routing_table(void)
  28 {
  29   routing_table =
  30       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  31   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  32 }
  33
  34 static void link_free(void *nw_link)
  35 {
  36   free(((link_CM02_t) nw_link)->name);
  37   free(nw_link);
  38 }
  39
  40 static link_CM02_t link_new(char *name,
  41                             double bw_initial,
  42                             tmgr_trace_t bw_trace,
  43                             double lat_initial,
  44                             tmgr_trace_t lat_trace,
  45                             e_surf_link_state_t
  46                             state_initial,
  47                             tmgr_trace_t state_trace,
  48                             e_surf_link_sharing_policy_t
  49                             policy, xbt_dict_t properties)
  50 {
  51   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  52   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  53               "Link '%s' declared several times in the platform file.", name);
  54
  55   nw_link->model = (surf_model_t) surf_network_model;
  56   nw_link->name = name;
  57   nw_link->bw_current = bw_initial;
  58   if (bw_trace)
  59     nw_link->bw_event =
  60         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  61   nw_link->lat_current = lat_initial;
  62   if (lat_trace)
  63     nw_link->lat_event =
  64         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  65   nw_link->state_current = state_initial;
  66   if (state_trace)
  67     nw_link->state_event =
  68         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  69
  70   nw_link->constraint =
  71       lmm_constraint_new(network_maxmin_system, nw_link,
  72                          nw_link->bw_current);
  73
  74   if (policy == SURF_LINK_FATPIPE)
  75     lmm_constraint_shared(nw_link->constraint);
  76
  77   nw_link->properties = properties;
  78
  79   current_property_set = properties;
  80
  81   xbt_dict_set(link_set, name, nw_link, link_free);
  82
  83   return nw_link;
  84 }
  85
  86 static void network_card_free(void *nw_card)
  87 {
  88   free(((network_card_CM02_t) nw_card)->name);
  89   free(nw_card);
  90 }
  91
  92 static int network_card_new(const char *card_name)
  93 {
  94   network_card_CM02_t card =
  95       xbt_dict_get_or_null(network_card_set, card_name);
  96
  97   if (!card) {
  98     card = xbt_new0(s_network_card_CM02_t, 1);
  99     card->name = xbt_strdup(card_name);
 100     card->id = card_number++;
 101     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 102   }
 103   return card->id;
 104 }
 105
 106 static void route_new(int src_id, int dst_id,
 107                       link_CM02_t * link_list, int nb_link)
 108 {
 109   ROUTE_SIZE(src_id, dst_id) = nb_link;
 110   ROUTE(src_id, dst_id) = link_list =
 111       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 112 }
 113
 114 static void parse_link_init(void)
 115 {
 116   char *name_link;
 117   double bw_initial;
 118   tmgr_trace_t bw_trace;
 119   double lat_initial;
 120   tmgr_trace_t lat_trace;
 121   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 122   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 123   tmgr_trace_t state_trace;
 124
 125   name_link = xbt_strdup(A_surfxml_link_id);
 126   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 127   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 128   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 129   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 130
 131   xbt_assert0((A_surfxml_link_state ==
 132                A_surfxml_link_state_ON)
 133               || (A_surfxml_link_state ==
 134                   A_surfxml_link_state_OFF), "Invalid state");
 135   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 136     state_initial_link = SURF_LINK_ON;
 137   else if (A_surfxml_link_state ==
 138            A_surfxml_link_state_OFF)
 139     state_initial_link = SURF_LINK_OFF;
 140
 141   if (A_surfxml_link_sharing_policy ==
 142       A_surfxml_link_sharing_policy_SHARED)
 143     policy_initial_link = SURF_LINK_SHARED;
 144   else if (A_surfxml_link_sharing_policy ==
 145            A_surfxml_link_sharing_policy_FATPIPE)
 146     policy_initial_link = SURF_LINK_FATPIPE;
 147
 148   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 149
 150   link_new(name_link, bw_initial, bw_trace,
 151                    lat_initial, lat_trace, state_initial_link, state_trace,
 152                    policy_initial_link, xbt_dict_new());
 153
 154 }
 155
 156 static int src_id = -1;
 157 static int dst_id = -1;
 158
 159 static void parse_route_set_endpoints(void)
 160 {
 161   src_id = network_card_new(A_surfxml_route_src);
 162   dst_id = network_card_new(A_surfxml_route_dst);
 163   route_action = A_surfxml_route_action;
 164   route_link_list = xbt_dynar_new(sizeof(char *), &free_string);
 165 }
 166
 167 static void parse_route_set_route(void)
 168 {
 169   char *name;
 170   if (src_id != -1 && dst_id != -1) {
 171     name = bprintf("%x#%x",src_id, dst_id);
 172     manage_route(route_table, name, route_action, 0);
 173     free(name);
 174   }
 175 }
 176
 177 static void add_loopback(void)
 178 {
 179   int i;
 180   /* Adding loopback if needed */
 181   for (i = 0; i < host_number; i++)
 182     if (!ROUTE_SIZE(i, i)) {
 183       if (!loopback)
 184         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 185                                     498000000, NULL, 0.000015, NULL,
 186                                     SURF_LINK_ON, NULL,
 187                                     SURF_LINK_FATPIPE,NULL);
 188       ROUTE_SIZE(i, i) = 1;
 189       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 190       ROUTE(i, i)[0] = loopback;
 191     }
 192 }
 193
 194 static void add_route(void)
 195 {
 196   xbt_ex_t e;
 197   int nb_link = 0;
 198   unsigned int cpt = 0;
 199   int link_list_capacity = 0;
 200   link_CM02_t *link_list = NULL;
 201   xbt_dict_cursor_t cursor = NULL;
 202   char *key,*data, *end;
 203   const char *sep = "#";
 204   xbt_dynar_t links, keys;
 205
 206   if (routing_table == NULL) create_routing_table();
 207
 208   xbt_dict_foreach(route_table, cursor, key, data) {
 209     nb_link = 0;
 210     links = (xbt_dynar_t)data;
 211     keys = xbt_str_split_str(key, sep);
 212
 213     link_list_capacity = xbt_dynar_length(links);
 214     link_list = xbt_new(link_CM02_t, link_list_capacity);
 215
 216     src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
 217     dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
 218
 219     char* link = NULL;
 220     xbt_dynar_foreach (links, cpt, link) {
 221       TRY {
 222         link_list[nb_link++] = xbt_dict_get(link_set, link);
 223       }
 224       CATCH(e) {
 225         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 226       }
 227     }
 228     route_new(src_id, dst_id, link_list, nb_link);
 229    }
 230
 231    xbt_dict_free(&route_table);
 232
 233 }
 234
 235 static void count_hosts(void)
 236 {
 237    host_number++;
 238 }
 239
 240 static int called = 0;
 241
 242 static void add_traces(void)
 243 {
 244    xbt_dynar_t trace_connect = NULL;
 245    unsigned int cpt;
 246    int connect_element, connect_kind;
 247    char *value, *trace_id, *connector_id;
 248    link_CM02_t link;
 249    tmgr_trace_t trace;
 250
 251    if (called) return;
 252    called = 1;
 253
 254    /*for all trace connects parse them and update traces for hosts or links */
 255    xbt_dynar_foreach (traces_connect_list, cpt, value) {
 256      trace_connect = xbt_str_split_str(value, "#");
 257      trace_id        = xbt_dynar_get_as(trace_connect, 0, char*);
 258      connect_element = atoi(xbt_dynar_get_as(trace_connect, 1, char*));
 259      connect_kind    = atoi(xbt_dynar_get_as(trace_connect, 2, char*));
 260      connector_id    = xbt_dynar_get_as(trace_connect, 3, char*);
 261
 262      xbt_assert1((trace = xbt_dict_get_or_null(traces_set_list, trace_id)), "Trace %s undefined", trace_id);
 263
 264      if (connect_element == A_surfxml_trace_c_connect_element_LINK) {
 265         xbt_assert1((link = xbt_dict_get_or_null(link_set, connector_id)), "Link %s undefined", connector_id);
 266         switch (connect_kind) {
 267            case A_surfxml_trace_c_connect_kind_AVAILABILITY: link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 268            case A_surfxml_trace_c_connect_kind_BANDWIDTH: link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 269            case A_surfxml_trace_c_connect_kind_LATENCY: link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link); break;
 270         }
 271      }
 272    }
 273
 274    xbt_dynar_free(&trace_connect);
 275    xbt_dynar_free(&traces_connect_list);
 276    xbt_dict_free(&traces_set_list);
 277 }
 278
 279 static void define_callbacks(const char *file)
 280 {
 281   /* Figuring out the network links */
 282   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 283   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 284   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
 285   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 286   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
 287   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 288   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_data);
 289   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 290   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 291   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 292   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
 293   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
 294   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
 295   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
 296   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
 297   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
 298   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
 299   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
 300 }
 301
 302 static void *name_service(const char *name)
 303 {
 304   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 305   return card;
 306 }
 307
 308 static const char *get_resource_name(void *resource_id)
 309 {
 310   return ((network_card_CM02_t) resource_id)->name;
 311 }
 312
 313 static int resource_used(void *resource_id)
 314 {
 315   return lmm_constraint_used(network_maxmin_system,
 316                              ((link_CM02_t) resource_id)->
 317                              constraint);
 318 }
 319
 320 static int action_free(surf_action_t action)
 321 {
 322   action->using--;
 323   if (!action->using) {
 324     xbt_swag_remove(action, action->state_set);
 325     if (((surf_action_network_CM02_t) action)->variable)
 326       lmm_variable_free(network_maxmin_system,
 327                         ((surf_action_network_CM02_t) action)->variable);
 328     free(action);
 329     return 1;
 330   }
 331   return 0;
 332 }
 333
 334 static void action_use(surf_action_t action)
 335 {
 336   action->using++;
 337 }
 338
 339 static void action_cancel(surf_action_t action)
 340 {
 341   return;
 342 }
 343
 344 static void action_recycle(surf_action_t action)
 345 {
 346   return;
 347 }
 348
 349 static void action_change_state(surf_action_t action,
 350                                 e_surf_action_state_t state)
 351 {
 352 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 353 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 354 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 355 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 356 /*     } */
 357
 358   surf_action_change_state(action, state);
 359   return;
 360 }
 361
 362 static double share_resources(double now)
 363 {
 364   s_surf_action_network_CM02_t s_action;
 365   surf_action_network_CM02_t action = NULL;
 366   xbt_swag_t running_actions =
 367       surf_network_model->common_public->states.running_action_set;
 368   double min;
 369
 370   min = generic_maxmin_share_resources(running_actions,
 371                                        xbt_swag_offset(s_action,
 372                                                        variable),
 373                                        network_maxmin_system,
 374                                        network_solve);
 375
 376   xbt_swag_foreach(action, running_actions) {
 377     if (action->latency > 0) {
 378       if (min < 0)
 379         min = action->latency;
 380       else if (action->latency < min)
 381         min = action->latency;
 382     }
 383   }
 384
 385   return min;
 386 }
 387
 388 static void update_actions_state(double now, double delta)
 389 {
 390   double deltap = 0.0;
 391   surf_action_network_CM02_t action = NULL;
 392   surf_action_network_CM02_t next_action = NULL;
 393   xbt_swag_t running_actions =
 394       surf_network_model->common_public->states.running_action_set;
 395   /*
 396      xbt_swag_t failed_actions =
 397      surf_network_model->common_public->states.failed_action_set;
 398    */
 399
 400   xbt_swag_foreach_safe(action, next_action, running_actions) {
 401     deltap = delta;
 402     if (action->latency > 0) {
 403       if (action->latency > deltap) {
 404         double_update(&(action->latency), deltap);
 405         deltap = 0.0;
 406       } else {
 407         double_update(&(deltap), action->latency);
 408         action->latency = 0.0;
 409       }
 410       if ((action->latency == 0.0) && !(action->suspended))
 411         lmm_update_variable_weight(network_maxmin_system, action->variable,
 412                                    action->lat_current);
 413     }
 414     double_update(&(action->generic_action.remains),
 415                   lmm_variable_getvalue(action->variable) * deltap);
 416     if (action->generic_action.max_duration != NO_MAX_DURATION)
 417       double_update(&(action->generic_action.max_duration), delta);
 418
 419     /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
 420
 421     if ((action->generic_action.remains <= 0) &&
 422         (lmm_get_variable_weight(action->variable) > 0)) {
 423       action->generic_action.finish = surf_get_clock();
 424       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 425     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 426                (action->generic_action.max_duration <= 0)) {
 427       action->generic_action.finish = surf_get_clock();
 428       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 429     } else {                    /* Need to check that none of the model has failed */
 430       lmm_constraint_t cnst = NULL;
 431       int i = 0;
 432       link_CM02_t nw_link = NULL;
 433
 434       while ((cnst =
 435               lmm_get_cnst_from_var(network_maxmin_system,
 436                                     action->variable, i++))) {
 437         nw_link = lmm_constraint_id(cnst);
 438         if (nw_link->state_current == SURF_LINK_OFF) {
 439           action->generic_action.finish = surf_get_clock();
 440           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 441           break;
 442         }
 443       }
 444     }
 445   }
 446
 447   return;
 448 }
 449
 450 static void update_resource_state(void *id,
 451                                   tmgr_trace_event_t event_type,
 452                                   double value)
 453 {
 454   link_CM02_t nw_link = id;
 455   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 456   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 457   /*     value, event_type); */
 458
 459   if (event_type == nw_link->bw_event) {
 460     nw_link->bw_current = value;
 461     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 462                                 nw_link->bw_current);
 463   } else if (event_type == nw_link->lat_event) {
 464     double delta = value - nw_link->lat_current;
 465     lmm_variable_t var = NULL;
 466     surf_action_network_CM02_t action = NULL;
 467
 468     nw_link->lat_current = value;
 469     while (lmm_get_var_from_cnst
 470            (network_maxmin_system, nw_link->constraint, &var)) {
 471       action = lmm_variable_id(var);
 472       action->lat_current += delta;
 473       if (action->rate < 0)
 474         lmm_update_variable_bound(network_maxmin_system, action->variable,
 475                                   SG_TCP_CTE_GAMMA / (2.0 *
 476                                                       action->
 477                                                       lat_current));
 478       else
 479         lmm_update_variable_bound(network_maxmin_system, action->variable,
 480                                   min(action->rate,
 481                                       SG_TCP_CTE_GAMMA / (2.0 *
 482                                                           action->
 483                                                           lat_current)));
 484       if (!(action->suspended))
 485         lmm_update_variable_weight(network_maxmin_system, action->variable,
 486                                    action->lat_current);
 487       lmm_update_variable_latency(network_maxmin_system, action->variable,
 488                                   delta);
 489     }
 490   } else if (event_type == nw_link->state_event) {
 491     if (value > 0)
 492       nw_link->state_current = SURF_LINK_ON;
 493     else
 494       nw_link->state_current = SURF_LINK_OFF;
 495   } else {
 496     CRITICAL0("Unknown event ! \n");
 497     xbt_abort();
 498   }
 499
 500   return;
 501 }
 502
 503 static surf_action_t communicate(void *src, void *dst, double size,
 504                                  double rate)
 505 {
 506   surf_action_network_CM02_t action = NULL;
 507   network_card_CM02_t card_src = src;
 508   network_card_CM02_t card_dst = dst;
 509   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 510   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 511   int i;
 512
 513   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 514   xbt_assert2(route_size,
 515               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 516               card_src->name, card_dst->name);
 517
 518   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 519
 520   action->generic_action.using = 1;
 521   action->generic_action.cost = size;
 522   action->generic_action.remains = size;
 523   action->generic_action.max_duration = NO_MAX_DURATION;
 524   action->generic_action.start = surf_get_clock();
 525   action->generic_action.finish = -1.0;
 526   action->generic_action.model_type =
 527       (surf_model_t) surf_network_model;
 528   action->suspended = 0;        /* Should be useless because of the
 529                                    calloc but it seems to help valgrind... */
 530   action->generic_action.state_set =
 531       surf_network_model->common_public->states.running_action_set;
 532
 533   xbt_swag_insert(action, action->generic_action.state_set);
 534   action->rate = rate;
 535
 536   action->latency = 0.0;
 537   for (i = 0; i < route_size; i++)
 538     action->latency += route[i]->lat_current;
 539   action->lat_current = action->latency;
 540
 541   if (action->latency > 0)
 542     action->variable =
 543         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 544                          route_size);
 545   else
 546     action->variable =
 547         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 548                          route_size);
 549
 550   if (action->rate < 0) {
 551     if (action->lat_current > 0)
 552       lmm_update_variable_bound(network_maxmin_system, action->variable,
 553                                 SG_TCP_CTE_GAMMA / (2.0 *
 554                                                     action->lat_current));
 555     else
 556       lmm_update_variable_bound(network_maxmin_system, action->variable,
 557                                 -1.0);
 558   } else {
 559     if (action->lat_current > 0)
 560       lmm_update_variable_bound(network_maxmin_system, action->variable,
 561                                 min(action->rate,
 562                                     SG_TCP_CTE_GAMMA / (2.0 *
 563                                                         action->
 564                                                         lat_current)));
 565     else
 566       lmm_update_variable_bound(network_maxmin_system, action->variable,
 567                                 action->rate);
 568   }
 569   lmm_update_variable_latency(network_maxmin_system, action->variable,
 570                               action->latency);
 571
 572   for (i = 0; i < route_size; i++)
 573     lmm_expand(network_maxmin_system, route[i]->constraint,
 574                action->variable, 1.0);
 575   XBT_OUT;
 576
 577   return (surf_action_t) action;
 578 }
 579
 580 /* returns an array of link_CM02_t */
 581 static const void **get_route(void *src, void *dst)
 582 {
 583   network_card_CM02_t card_src = src;
 584   network_card_CM02_t card_dst = dst;
 585   return (const void **) ROUTE(card_src->id, card_dst->id);
 586 }
 587
 588 static int get_route_size(void *src, void *dst)
 589 {
 590   network_card_CM02_t card_src = src;
 591   network_card_CM02_t card_dst = dst;
 592   return ROUTE_SIZE(card_src->id, card_dst->id);
 593 }
 594
 595 static const char *get_link_name(const void *link)
 596 {
 597   return ((link_CM02_t) link)->name;
 598 }
 599
 600 static double get_link_bandwidth(const void *link)
 601 {
 602   return ((link_CM02_t) link)->bw_current;
 603 }
 604
 605 static double get_link_latency(const void *link)
 606 {
 607   return ((link_CM02_t) link)->lat_current;
 608 }
 609
 610 static xbt_dict_t get_properties(void *link)
 611 {
 612  return ((link_CM02_t) link)->properties;
 613 }
 614
 615 static void action_suspend(surf_action_t action)
 616 {
 617   ((surf_action_network_CM02_t) action)->suspended = 1;
 618   lmm_update_variable_weight(network_maxmin_system,
 619                              ((surf_action_network_CM02_t) action)->
 620                              variable, 0.0);
 621 }
 622
 623 static void action_resume(surf_action_t action)
 624 {
 625   if (((surf_action_network_CM02_t) action)->suspended) {
 626     lmm_update_variable_weight(network_maxmin_system,
 627                                ((surf_action_network_CM02_t) action)->
 628                                variable,
 629                                ((surf_action_network_CM02_t) action)->
 630                                lat_current);
 631     ((surf_action_network_CM02_t) action)->suspended = 0;
 632   }
 633 }
 634
 635 static int action_is_suspended(surf_action_t action)
 636 {
 637   return ((surf_action_network_CM02_t) action)->suspended;
 638 }
 639
 640 static void action_set_max_duration(surf_action_t action, double duration)
 641 {
 642   action->max_duration = duration;
 643 }
 644
 645 static void finalize(void)
 646 {
 647   int i, j;
 648
 649   xbt_dict_free(&network_card_set);
 650   xbt_dict_free(&link_set);
 651   xbt_swag_free(surf_network_model->common_public->states.
 652                 ready_action_set);
 653   xbt_swag_free(surf_network_model->common_public->states.
 654                 running_action_set);
 655   xbt_swag_free(surf_network_model->common_public->states.
 656                 failed_action_set);
 657   xbt_swag_free(surf_network_model->common_public->states.
 658                 done_action_set);
 659   free(surf_network_model->common_public);
 660   free(surf_network_model->common_private);
 661   free(surf_network_model->extension_public);
 662
 663   free(surf_network_model);
 664   surf_network_model = NULL;
 665
 666   loopback = NULL;
 667   for (i = 0; i < card_number; i++)
 668     for (j = 0; j < card_number; j++)
 669       free(ROUTE(i, j));
 670   free(routing_table);
 671   routing_table = NULL;
 672   free(routing_table_size);
 673   routing_table_size = NULL;
 674   card_number = 0;
 675 }
 676
 677 static void surf_network_model_init_internal(void)
 678 {
 679   s_surf_action_t action;
 680
 681   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 682
 683   surf_network_model->common_private =
 684       xbt_new0(s_surf_model_private_t, 1);
 685   surf_network_model->common_public =
 686       xbt_new0(s_surf_model_public_t, 1);
 687   surf_network_model->extension_public =
 688       xbt_new0(s_surf_network_model_extension_public_t, 1);
 689
 690   surf_network_model->common_public->states.ready_action_set =
 691       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 692   surf_network_model->common_public->states.running_action_set =
 693       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 694   surf_network_model->common_public->states.failed_action_set =
 695       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 696   surf_network_model->common_public->states.done_action_set =
 697       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 698
 699   surf_network_model->common_public->name_service = name_service;
 700   surf_network_model->common_public->get_resource_name =
 701       get_resource_name;
 702   surf_network_model->common_public->action_get_state =
 703       surf_action_get_state;
 704   surf_network_model->common_public->action_get_start_time =
 705       surf_action_get_start_time;
 706   surf_network_model->common_public->action_get_finish_time =
 707       surf_action_get_finish_time;
 708   surf_network_model->common_public->action_free = action_free;
 709   surf_network_model->common_public->action_use = action_use;
 710   surf_network_model->common_public->action_cancel = action_cancel;
 711   surf_network_model->common_public->action_recycle = action_recycle;
 712   surf_network_model->common_public->action_change_state =
 713       action_change_state;
 714   surf_network_model->common_public->action_set_data =
 715       surf_action_set_data;
 716   surf_network_model->common_public->name = "network";
 717
 718   surf_network_model->common_private->resource_used = resource_used;
 719   surf_network_model->common_private->share_resources = share_resources;
 720   surf_network_model->common_private->update_actions_state =
 721       update_actions_state;
 722   surf_network_model->common_private->update_resource_state =
 723       update_resource_state;
 724   surf_network_model->common_private->finalize = finalize;
 725
 726   surf_network_model->common_public->suspend = action_suspend;
 727   surf_network_model->common_public->resume = action_resume;
 728   surf_network_model->common_public->is_suspended = action_is_suspended;
 729   surf_cpu_model->common_public->set_max_duration =
 730       action_set_max_duration;
 731
 732   surf_network_model->extension_public->communicate = communicate;
 733   surf_network_model->extension_public->get_route = get_route;
 734   surf_network_model->extension_public->get_route_size = get_route_size;
 735   surf_network_model->extension_public->get_link_name = get_link_name;
 736   surf_network_model->extension_public->get_link_bandwidth =
 737       get_link_bandwidth;
 738   surf_network_model->extension_public->get_link_latency =
 739       get_link_latency;
 740
 741   surf_network_model->common_public->get_properties =  get_properties;
 742
 743   link_set = xbt_dict_new();
 744   network_card_set = xbt_dict_new();
 745
 746   if (!network_maxmin_system)
 747     network_maxmin_system = lmm_system_new();
 748 }
 749
 750 /***************************************************************************/
 751 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 752 /***************************************************************************/
 753 /* @TechReport{      rr-lip2002-40, */
 754 /*   author        = {Henri Casanova and Loris Marchal}, */
 755 /*   institution   = {LIP}, */
 756 /*   title         = {A Network Model for Simulation of Grid Application}, */
 757 /*   number        = {2002-40}, */
 758 /*   month         = {oct}, */
 759 /*   year          = {2002} */
 760 /* } */
 761 void surf_network_model_init_CM02(const char *filename)
 762 {
 763
 764   if (surf_network_model)
 765     return;
 766   surf_network_model_init_internal();
 767   define_callbacks(filename);
 768   xbt_dynar_push(model_list, &surf_network_model);
 769   network_solve = lmm_solve;
 770
 771   update_model_description(surf_network_model_description,
 772                               surf_network_model_description_size,
 773                               "CM02",
 774                               (surf_model_t) surf_network_model);
 775 }
 776
 777 void surf_network_model_init_Reno(const char *filename)
 778 {
 779   if (surf_network_model)
 780     return;
 781   surf_network_model_init_internal();
 782   define_callbacks(filename);
 783
 784   xbt_dynar_push(model_list, &surf_network_model);
 785   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 786                                     func_reno_fpi);
 787   network_solve = lagrange_solve;
 788
 789   update_model_description(surf_network_model_description,
 790                               surf_network_model_description_size,
 791                               "Reno",
 792                               (surf_model_t) surf_network_model);
 793 }
 794
 795 void surf_network_model_init_Vegas(const char *filename)
 796 {
 797   if (surf_network_model)
 798     return;
 799   surf_network_model_init_internal();
 800   define_callbacks(filename);
 801
 802   xbt_dynar_push(model_list, &surf_network_model);
 803   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 804                                     func_vegas_fpi);
 805   network_solve = lagrange_solve;
 806
 807   update_model_description(surf_network_model_description,
 808                               surf_network_model_description_size,
 809                               "Vegas",
 810                               (surf_model_t) surf_network_model);
 811 }
 812
 813 #ifdef HAVE_SDP
 814 void surf_network_model_init_SDP(const char *filename)
 815 {
 816   if (surf_network_model)
 817     return;
 818   surf_network_model_init_internal();
 819   define_callbacks(filename);
 820
 821   xbt_dynar_push(model_list, &surf_network_model);
 822   network_solve = sdp_solve;
 823
 824   update_model_description(surf_network_model_description,
 825                               surf_network_model_description_size,
 826                               "SDP",
 827                               (surf_model_t) surf_network_model);
 828 }
 829 #endif