src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10 #include "xbt/str.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 surf_network_model_t surf_network_model = NULL;
  16 static lmm_system_t network_maxmin_system = NULL;
  17 static void (*network_solve) (lmm_system_t) = NULL;
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 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   xbt_dict_free(&(((link_CM02_t)nw_link)->properties));
  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 }
 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           char* link = NULL;
 210     nb_link = 0;
 211     links = (xbt_dynar_t)data;
 212     keys = xbt_str_split_str(key, sep);
 213
 214     link_list_capacity = xbt_dynar_length(links);
 215     link_list = xbt_new(link_CM02_t, link_list_capacity);
 216
 217     src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
 218     dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
 219     xbt_dynar_free(&keys);
 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
 233 static void count_hosts(void)
 234 {
 235    host_number++;
 236 }
 237
 238
 239 static void add_traces(void) {
 240    xbt_dict_cursor_t cursor=NULL;
 241    char *trace_name,*elm;
 242
 243    static int called = 0;
 244    if (called) return;
 245    called = 1;
 246
 247    /* connect all traces relative to network */
 248    xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 249       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 250       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 251
 252       xbt_assert1(link, "Link %s undefined", elm);
 253       xbt_assert1(trace, "Trace %s undefined", trace_name);
 254
 255       link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 256    }
 257
 258    xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 259       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 260       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 261
 262       xbt_assert1(link, "Link %s undefined", elm);
 263       xbt_assert1(trace, "Trace %s undefined", trace_name);
 264
 265       link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 266    }
 267
 268    xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 269       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 270       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 271
 272       xbt_assert1(link, "Link %s undefined", elm);
 273       xbt_assert1(trace, "Trace %s undefined", trace_name);
 274
 275       link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 276    }
 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_route_cb_list, &parse_route_set_endpoints);
 285   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 286   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 287   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 288   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 289 }
 290
 291 static void *name_service(const char *name)
 292 {
 293   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 294   return card;
 295 }
 296
 297 static const char *get_resource_name(void *resource_id)
 298 {
 299   return ((network_card_CM02_t) resource_id)->name;
 300 }
 301
 302 static int resource_used(void *resource_id)
 303 {
 304   return lmm_constraint_used(network_maxmin_system,
 305                              ((link_CM02_t) resource_id)->
 306                              constraint);
 307 }
 308
 309 static int action_free(surf_action_t action)
 310 {
 311   action->using--;
 312   if (!action->using) {
 313     xbt_swag_remove(action, action->state_set);
 314     if (((surf_action_network_CM02_t) action)->variable)
 315       lmm_variable_free(network_maxmin_system,
 316                         ((surf_action_network_CM02_t) action)->variable);
 317     free(action);
 318     return 1;
 319   }
 320   return 0;
 321 }
 322
 323 static void action_use(surf_action_t action)
 324 {
 325   action->using++;
 326 }
 327
 328 static void action_cancel(surf_action_t action)
 329 {
 330   return;
 331 }
 332
 333 static void action_recycle(surf_action_t action)
 334 {
 335   return;
 336 }
 337
 338 static void action_change_state(surf_action_t action,
 339                                 e_surf_action_state_t state)
 340 {
 341 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 342 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 343 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 344 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 345 /*     } */
 346
 347   surf_action_change_state(action, state);
 348   return;
 349 }
 350
 351 static double share_resources(double now)
 352 {
 353   s_surf_action_network_CM02_t s_action;
 354   surf_action_network_CM02_t action = NULL;
 355   xbt_swag_t running_actions =
 356       surf_network_model->common_public->states.running_action_set;
 357   double min;
 358
 359   min = generic_maxmin_share_resources(running_actions,
 360                                        xbt_swag_offset(s_action,
 361                                                        variable),
 362                                        network_maxmin_system,
 363                                        network_solve);
 364
 365 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 366
 367   xbt_swag_foreach(action, running_actions) {
 368     if (action->latency > 0) {
 369       if (min < 0)
 370         min = action->latency;
 371       else if (action->latency < min)
 372         min = action->latency;
 373     }
 374   }
 375
 376   return min;
 377 }
 378
 379 static void update_actions_state(double now, double delta)
 380 {
 381   double deltap = 0.0;
 382   surf_action_network_CM02_t action = NULL;
 383   surf_action_network_CM02_t next_action = NULL;
 384   xbt_swag_t running_actions =
 385       surf_network_model->common_public->states.running_action_set;
 386   /*
 387      xbt_swag_t failed_actions =
 388      surf_network_model->common_public->states.failed_action_set;
 389    */
 390
 391   xbt_swag_foreach_safe(action, next_action, running_actions) {
 392     deltap = delta;
 393     if (action->latency > 0) {
 394       if (action->latency > deltap) {
 395         double_update(&(action->latency), deltap);
 396         deltap = 0.0;
 397       } else {
 398         double_update(&(deltap), action->latency);
 399         action->latency = 0.0;
 400       }
 401       if ((action->latency == 0.0) && !(action->suspended))
 402         lmm_update_variable_weight(network_maxmin_system, action->variable,
 403                                    action->lat_current);
 404     }
 405     double_update(&(action->generic_action.remains),
 406                   lmm_variable_getvalue(action->variable) * deltap);
 407     if (action->generic_action.max_duration != NO_MAX_DURATION)
 408       double_update(&(action->generic_action.max_duration), delta);
 409
 410     if ((action->generic_action.remains <= 0) &&
 411         (lmm_get_variable_weight(action->variable) > 0)) {
 412       action->generic_action.finish = surf_get_clock();
 413       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 414     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 415                (action->generic_action.max_duration <= 0)) {
 416       action->generic_action.finish = surf_get_clock();
 417       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 418     }
 419   }
 420
 421   return;
 422 }
 423
 424 static void update_resource_state(void *id,
 425                                   tmgr_trace_event_t event_type,
 426                                   double value, double date)
 427 {
 428   link_CM02_t nw_link = id;
 429   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 430   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 431   /*     value, event_type); */
 432
 433   if (event_type == nw_link->bw_event) {
 434     nw_link->bw_current = value;
 435     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 436                                 nw_link->bw_current);
 437   } else if (event_type == nw_link->lat_event) {
 438     double delta = value - nw_link->lat_current;
 439     lmm_variable_t var = NULL;
 440     lmm_element_t elem = NULL;
 441     surf_action_network_CM02_t action = NULL;
 442
 443     nw_link->lat_current = value;
 444     while ((var= lmm_get_var_from_cnst
 445            (network_maxmin_system, nw_link->constraint, &elem))) {
 446       action = lmm_variable_id(var);
 447       action->lat_current += delta;
 448       if (action->rate < 0)
 449         lmm_update_variable_bound(network_maxmin_system, action->variable,
 450                                   SG_TCP_CTE_GAMMA / (2.0 *
 451                                                       action->
 452                                                       lat_current));
 453       else
 454         lmm_update_variable_bound(network_maxmin_system, action->variable,
 455                                   min(action->rate,
 456                                       SG_TCP_CTE_GAMMA / (2.0 *
 457                                                           action->
 458                                                           lat_current)));
 459       if (!(action->suspended))
 460         lmm_update_variable_weight(network_maxmin_system, action->variable,
 461                                    action->lat_current);
 462       lmm_update_variable_latency(network_maxmin_system, action->variable,
 463                                   delta);
 464     }
 465   } else if (event_type == nw_link->state_event) {
 466     if (value > 0)
 467       nw_link->state_current = SURF_LINK_ON;
 468     else {
 469       lmm_constraint_t cnst = nw_link->constraint;
 470       lmm_variable_t var = NULL;
 471       lmm_element_t elem = NULL;
 472
 473       nw_link->state_current = SURF_LINK_OFF;
 474       while ((var= lmm_get_var_from_cnst
 475               (network_maxmin_system, cnst, &elem))) {
 476         surf_action_t action = lmm_variable_id(var) ;
 477
 478         if(surf_action_get_state(action)==SURF_ACTION_RUNNING ||
 479            surf_action_get_state(action)==SURF_ACTION_READY) {
 480           action->finish = date;
 481           action_change_state( action, SURF_ACTION_FAILED);
 482         }
 483       }
 484     }
 485   } else {
 486     CRITICAL0("Unknown event ! \n");
 487     xbt_abort();
 488   }
 489
 490   return;
 491 }
 492
 493 static surf_action_t communicate(void *src, void *dst, double size,
 494                                  double rate)
 495 {
 496   surf_action_network_CM02_t action = NULL;
 497   /* LARGE PLATFORMS HACK:
 498      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 499      Use the cluster_id for ->id */
 500   network_card_CM02_t card_src = src;
 501   network_card_CM02_t card_dst = dst;
 502   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 503   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 504   /* LARGE PLATFORMS HACK:
 505      total_route_size = route_size + src->link_nb + dst->nb */
 506   int i;
 507
 508   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 509   /* LARGE PLATFORMS HACK:
 510      assert on total_route_size */
 511   xbt_assert2(route_size,
 512               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 513               card_src->name, card_dst->name);
 514
 515   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 516
 517   action->generic_action.using = 1;
 518   action->generic_action.cost = size;
 519   action->generic_action.remains = size;
 520   action->generic_action.max_duration = NO_MAX_DURATION;
 521   action->generic_action.start = surf_get_clock();
 522   action->generic_action.finish = -1.0;
 523   action->generic_action.model_type =
 524       (surf_model_t) surf_network_model;
 525   action->suspended = 0;        /* Should be useless because of the
 526                                    calloc but it seems to help valgrind... */
 527   action->generic_action.state_set =
 528       surf_network_model->common_public->states.running_action_set;
 529   for (i = 0; i < route_size; i++)
 530     if(route[i]->state_current == SURF_LINK_OFF) {
 531       action->generic_action.state_set =
 532         surf_network_model->common_public->states.failed_action_set;
 533       break;
 534     }
 535
 536   xbt_swag_insert(action, action->generic_action.state_set);
 537   action->rate = rate;
 538
 539   action->latency = 0.0;
 540   for (i = 0; i < route_size; i++)
 541     action->latency += route[i]->lat_current;
 542   /* LARGE PLATFORMS HACK:
 543      Add src->link and dst->link latencies */
 544   action->lat_current = action->latency;
 545
 546   /* LARGE PLATFORMS HACK:
 547      lmm_variable_new(..., total_route_size)*/
 548   if (action->latency > 0)
 549     action->variable =
 550         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 551                          route_size);
 552   else
 553     action->variable =
 554         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 555                          route_size);
 556
 557   if (action->rate < 0) {
 558     if (action->lat_current > 0)
 559       lmm_update_variable_bound(network_maxmin_system, action->variable,
 560                                 SG_TCP_CTE_GAMMA / (2.0 *
 561                                                     action->lat_current));
 562     else
 563       lmm_update_variable_bound(network_maxmin_system, action->variable,
 564                                 -1.0);
 565   } else {
 566     if (action->lat_current > 0)
 567       lmm_update_variable_bound(network_maxmin_system, action->variable,
 568                                 min(action->rate,
 569                                     SG_TCP_CTE_GAMMA / (2.0 *
 570                                                         action->
 571                                                         lat_current)));
 572     else
 573       lmm_update_variable_bound(network_maxmin_system, action->variable,
 574                                 action->rate);
 575   }
 576   lmm_update_variable_latency(network_maxmin_system, action->variable,
 577                               action->latency);
 578
 579   for (i = 0; i < route_size; i++)
 580     lmm_expand(network_maxmin_system, route[i]->constraint,
 581                action->variable, 1.0);
 582   /* LARGE PLATFORMS HACK:
 583      expand also with src->link and dst->link */
 584
 585   XBT_OUT;
 586
 587   return (surf_action_t) action;
 588 }
 589
 590 /* returns an array of link_CM02_t */
 591 static const void **get_route(void *src, void *dst)
 592 {
 593   network_card_CM02_t card_src = src;
 594   network_card_CM02_t card_dst = dst;
 595   return (const void **) ROUTE(card_src->id, card_dst->id);
 596 }
 597
 598 static int get_route_size(void *src, void *dst)
 599 {
 600   network_card_CM02_t card_src = src;
 601   network_card_CM02_t card_dst = dst;
 602   return ROUTE_SIZE(card_src->id, card_dst->id);
 603 }
 604
 605 static const char *get_link_name(const void *link)
 606 {
 607   return ((link_CM02_t) link)->name;
 608 }
 609
 610 static double get_link_bandwidth(const void *link)
 611 {
 612   return ((link_CM02_t) link)->bw_current;
 613 }
 614
 615 static double get_link_latency(const void *link)
 616 {
 617   return ((link_CM02_t) link)->lat_current;
 618 }
 619
 620 static int link_shared(const void *link)
 621 {
 622   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 623 }
 624
 625 static xbt_dict_t get_properties(void *link)
 626 {
 627  return ((link_CM02_t) link)->properties;
 628 }
 629
 630 static void action_suspend(surf_action_t action)
 631 {
 632   ((surf_action_network_CM02_t) action)->suspended = 1;
 633   lmm_update_variable_weight(network_maxmin_system,
 634                              ((surf_action_network_CM02_t) action)->
 635                              variable, 0.0);
 636 }
 637
 638 static void action_resume(surf_action_t action)
 639 {
 640   if (((surf_action_network_CM02_t) action)->suspended) {
 641     lmm_update_variable_weight(network_maxmin_system,
 642                                ((surf_action_network_CM02_t) action)->
 643                                variable,
 644                                ((surf_action_network_CM02_t) action)->
 645                                lat_current);
 646     ((surf_action_network_CM02_t) action)->suspended = 0;
 647   }
 648 }
 649
 650 static int action_is_suspended(surf_action_t action)
 651 {
 652   return ((surf_action_network_CM02_t) action)->suspended;
 653 }
 654
 655 static void action_set_max_duration(surf_action_t action, double duration)
 656 {
 657   action->max_duration = duration;
 658 }
 659
 660 static void finalize(void)
 661 {
 662   int i, j;
 663
 664   xbt_dict_free(&network_card_set);
 665   xbt_dict_free(&link_set);
 666   xbt_swag_free(surf_network_model->common_public->states.
 667                 ready_action_set);
 668   xbt_swag_free(surf_network_model->common_public->states.
 669                 running_action_set);
 670   xbt_swag_free(surf_network_model->common_public->states.
 671                 failed_action_set);
 672   xbt_swag_free(surf_network_model->common_public->states.
 673                 done_action_set);
 674   free(surf_network_model->common_public);
 675   free(surf_network_model->common_private);
 676   free(surf_network_model->extension_public);
 677
 678   free(surf_network_model);
 679   surf_network_model = NULL;
 680
 681   loopback = NULL;
 682   for (i = 0; i < host_number; i++)
 683     for (j = 0; j < host_number; j++)
 684       free(ROUTE(i, j));
 685   free(routing_table);
 686   routing_table = NULL;
 687   free(routing_table_size);
 688   routing_table_size = NULL;
 689   host_number = 0;
 690   lmm_system_free(network_maxmin_system);
 691   network_maxmin_system = NULL;
 692 }
 693
 694 static void surf_network_model_init_internal(void)
 695 {
 696   s_surf_action_t action;
 697
 698   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 699
 700   surf_network_model->common_private =
 701       xbt_new0(s_surf_model_private_t, 1);
 702   surf_network_model->common_public =
 703       xbt_new0(s_surf_model_public_t, 1);
 704   surf_network_model->extension_public =
 705       xbt_new0(s_surf_network_model_extension_public_t, 1);
 706
 707   surf_network_model->common_public->states.ready_action_set =
 708       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 709   surf_network_model->common_public->states.running_action_set =
 710       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 711   surf_network_model->common_public->states.failed_action_set =
 712       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 713   surf_network_model->common_public->states.done_action_set =
 714       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 715
 716   surf_network_model->common_public->name_service = name_service;
 717   surf_network_model->common_public->get_resource_name =
 718       get_resource_name;
 719   surf_network_model->common_public->action_get_state =
 720       surf_action_get_state;
 721   surf_network_model->common_public->action_get_start_time =
 722       surf_action_get_start_time;
 723   surf_network_model->common_public->action_get_finish_time =
 724       surf_action_get_finish_time;
 725   surf_network_model->common_public->action_free = action_free;
 726   surf_network_model->common_public->action_use = action_use;
 727   surf_network_model->common_public->action_cancel = action_cancel;
 728   surf_network_model->common_public->action_recycle = action_recycle;
 729   surf_network_model->common_public->action_change_state =
 730       action_change_state;
 731   surf_network_model->common_public->action_set_data =
 732       surf_action_set_data;
 733   surf_network_model->common_public->name = "network";
 734
 735   surf_network_model->common_private->resource_used = resource_used;
 736   surf_network_model->common_private->share_resources = share_resources;
 737   surf_network_model->common_private->update_actions_state =
 738       update_actions_state;
 739   surf_network_model->common_private->update_resource_state =
 740       update_resource_state;
 741   surf_network_model->common_private->finalize = finalize;
 742
 743   surf_network_model->common_public->suspend = action_suspend;
 744   surf_network_model->common_public->resume = action_resume;
 745   surf_network_model->common_public->is_suspended = action_is_suspended;
 746   surf_cpu_model->common_public->set_max_duration =
 747       action_set_max_duration;
 748
 749   surf_network_model->extension_public->communicate = communicate;
 750   surf_network_model->extension_public->get_route = get_route;
 751   surf_network_model->extension_public->get_route_size = get_route_size;
 752   surf_network_model->extension_public->get_link_name = get_link_name;
 753   surf_network_model->extension_public->get_link_bandwidth =
 754       get_link_bandwidth;
 755   surf_network_model->extension_public->get_link_latency =
 756       get_link_latency;
 757   surf_network_model->extension_public->link_shared =
 758       link_shared;
 759
 760   surf_network_model->common_public->get_properties =  get_properties;
 761
 762   link_set = xbt_dict_new();
 763   network_card_set = xbt_dict_new();
 764
 765   if (!network_maxmin_system)
 766     network_maxmin_system = lmm_system_new();
 767 }
 768
 769 /***************************************************************************/
 770 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 771 /***************************************************************************/
 772 /* @TechReport{      rr-lip2002-40, */
 773 /*   author        = {Henri Casanova and Loris Marchal}, */
 774 /*   institution   = {LIP}, */
 775 /*   title         = {A Network Model for Simulation of Grid Application}, */
 776 /*   number        = {2002-40}, */
 777 /*   month         = {oct}, */
 778 /*   year          = {2002} */
 779 /* } */
 780 void surf_network_model_init_CM02(const char *filename)
 781 {
 782
 783   if (surf_network_model)
 784     return;
 785   surf_network_model_init_internal();
 786   define_callbacks(filename);
 787   xbt_dynar_push(model_list, &surf_network_model);
 788   network_solve = lmm_solve;
 789
 790   update_model_description(surf_network_model_description,
 791                            "CM02",
 792                            (surf_model_t) surf_network_model);
 793 }
 794
 795 void surf_network_model_init_Reno(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_reno_f, func_reno_fp,
 804                                     func_reno_fpi);
 805   network_solve = lagrange_solve;
 806
 807   update_model_description(surf_network_model_description,
 808                            "Reno",
 809                            (surf_model_t) surf_network_model);
 810 }
 811
 812
 813 void surf_network_model_init_Reno2(const char *filename)
 814 {
 815   if (surf_network_model)
 816     return;
 817   surf_network_model_init_internal();
 818   define_callbacks(filename);
 819
 820   xbt_dynar_push(model_list, &surf_network_model);
 821   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 822                                     func_reno2_fpi);
 823   network_solve = lagrange_solve;
 824
 825   update_model_description(surf_network_model_description,
 826                            "Reno2",
 827                            (surf_model_t) surf_network_model);
 828 }
 829
 830 void surf_network_model_init_Vegas(const char *filename)
 831 {
 832   if (surf_network_model)
 833     return;
 834   surf_network_model_init_internal();
 835   define_callbacks(filename);
 836
 837   xbt_dynar_push(model_list, &surf_network_model);
 838   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 839                                     func_vegas_fpi);
 840   network_solve = lagrange_solve;
 841
 842   update_model_description(surf_network_model_description,
 843                            "Vegas",
 844                            (surf_model_t) surf_network_model);
 845 }
 846
 847 #ifdef HAVE_SDP
 848 void surf_network_model_init_SDP(const char *filename)
 849 {
 850   if (surf_network_model)
 851     return;
 852   surf_network_model_init_internal();
 853   define_callbacks(filename);
 854
 855   xbt_dynar_push(model_list, &surf_network_model);
 856   network_solve = sdp_solve;
 857
 858   update_model_description(surf_network_model_description,
 859                            "SDP",
 860                            (surf_model_t) surf_network_model);
 861 }
 862 #endif
 863
 864 #ifdef HAVE_GTNETS
 865 void surf_network_model_init_GTNETS(const char *filename)
 866 {
 867   if (surf_network_model)
 868     return;
 869   surf_network_model_init_internal();
 870   define_callbacks(filename);
 871   xbt_dynar_push(model_list, &surf_network_model);
 872
 873   update_model_description(surf_network_model_description,
 874                            "GTNets",
 875                            (surf_model_t) surf_network_model);
 876 }
 877 #endif