src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10 #include "xbt/str.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 surf_network_model_t surf_network_model = NULL;
  16 static lmm_system_t network_maxmin_system = NULL;
  17 static void (*network_solve) (lmm_system_t) = NULL;
  18
  19 xbt_dict_t link_set = NULL;
  20 xbt_dict_t network_card_set = NULL;
  21
  22 int card_number = 0;
  23 int host_number = 0;
  24 link_CM02_t **routing_table = NULL;
  25 int *routing_table_size = NULL;
  26 static link_CM02_t loopback = NULL;
  27
  28 static void create_routing_table(void)
  29 {
  30   routing_table =
  31       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  32   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  33 }
  34
  35 static void link_free(void *nw_link)
  36 {
  37   free(((link_CM02_t) nw_link)->name);
  38   free(nw_link);
  39 }
  40
  41 static link_CM02_t link_new(char *name,
  42                             double bw_initial,
  43                             tmgr_trace_t bw_trace,
  44                             double lat_initial,
  45                             tmgr_trace_t lat_trace,
  46                             e_surf_link_state_t
  47                             state_initial,
  48                             tmgr_trace_t state_trace,
  49                             e_surf_link_sharing_policy_t
  50                             policy, xbt_dict_t properties)
  51 {
  52   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  53   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  54               "Link '%s' declared several times in the platform file.", name);
  55
  56   nw_link->model = (surf_model_t) surf_network_model;
  57   nw_link->name = name;
  58   nw_link->bw_current = bw_initial;
  59   if (bw_trace)
  60     nw_link->bw_event =
  61         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  62   nw_link->lat_current = lat_initial;
  63   if (lat_trace)
  64     nw_link->lat_event =
  65         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  66   nw_link->state_current = state_initial;
  67   if (state_trace)
  68     nw_link->state_event =
  69         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  70
  71   nw_link->constraint =
  72       lmm_constraint_new(network_maxmin_system, nw_link,
  73                          nw_link->bw_current);
  74
  75   if (policy == SURF_LINK_FATPIPE)
  76     lmm_constraint_shared(nw_link->constraint);
  77
  78   nw_link->properties = properties;
  79
  80   current_property_set = properties;
  81
  82   xbt_dict_set(link_set, name, nw_link, link_free);
  83
  84   return nw_link;
  85 }
  86
  87 static void network_card_free(void *nw_card)
  88 {
  89   free(((network_card_CM02_t) nw_card)->name);
  90   free(nw_card);
  91 }
  92
  93 static int network_card_new(const char *card_name)
  94 {
  95   network_card_CM02_t card =
  96       xbt_dict_get_or_null(network_card_set, card_name);
  97
  98   if (!card) {
  99     card = xbt_new0(s_network_card_CM02_t, 1);
 100     card->name = xbt_strdup(card_name);
 101     card->id = 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
 242 static void add_traces(void) {
 243    xbt_dict_cursor_t cursor=NULL;
 244    char *trace_name,*elm;
 245
 246    static int called = 0;
 247    if (called) return;
 248    called = 1;
 249
 250    /* connect all traces relative to network */
 251    xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 252       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 253       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 254
 255       xbt_assert1(link, "Link %s undefined", elm);
 256       xbt_assert1(trace, "Trace %s undefined", trace_name);
 257
 258       link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 259    }
 260
 261    xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 262       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 263       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 264
 265       xbt_assert1(link, "Link %s undefined", elm);
 266       xbt_assert1(trace, "Trace %s undefined", trace_name);
 267
 268       link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 269    }
 270
 271    xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 272       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 273       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 274
 275       xbt_assert1(link, "Link %s undefined", elm);
 276       xbt_assert1(trace, "Trace %s undefined", trace_name);
 277
 278       link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 279    }
 280
 281    xbt_dict_free(&trace_connect_list_host_avail);
 282    xbt_dict_free(&trace_connect_list_power);
 283    xbt_dict_free(&trace_connect_list_link_avail);
 284    xbt_dict_free(&trace_connect_list_bandwidth);
 285    xbt_dict_free(&trace_connect_list_latency);
 286
 287    xbt_dict_free(&traces_set_list);
 288 }
 289
 290 static void define_callbacks(const char *file)
 291 {
 292   /* Figuring out the network links */
 293   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 294   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 295   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
 296   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 297   surfxml_add_callback(ETag_surfxml_link_c_ctn_cb_list, &parse_route_elem);
 298   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 299   surfxml_add_callback(STag_surfxml_platform_cb_list, &init_data);
 300   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 301   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 302   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 303   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
 304   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
 305   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
 306   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
 307   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
 308   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
 309   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
 310   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
 311 }
 312
 313 static void *name_service(const char *name)
 314 {
 315   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 316   return card;
 317 }
 318
 319 static const char *get_resource_name(void *resource_id)
 320 {
 321   return ((network_card_CM02_t) resource_id)->name;
 322 }
 323
 324 static int resource_used(void *resource_id)
 325 {
 326   return lmm_constraint_used(network_maxmin_system,
 327                              ((link_CM02_t) resource_id)->
 328                              constraint);
 329 }
 330
 331 static int action_free(surf_action_t action)
 332 {
 333   action->using--;
 334   if (!action->using) {
 335     xbt_swag_remove(action, action->state_set);
 336     if (((surf_action_network_CM02_t) action)->variable)
 337       lmm_variable_free(network_maxmin_system,
 338                         ((surf_action_network_CM02_t) action)->variable);
 339     free(action);
 340     return 1;
 341   }
 342   return 0;
 343 }
 344
 345 static void action_use(surf_action_t action)
 346 {
 347   action->using++;
 348 }
 349
 350 static void action_cancel(surf_action_t action)
 351 {
 352   return;
 353 }
 354
 355 static void action_recycle(surf_action_t action)
 356 {
 357   return;
 358 }
 359
 360 static void action_change_state(surf_action_t action,
 361                                 e_surf_action_state_t state)
 362 {
 363 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 364 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 365 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 366 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 367 /*     } */
 368
 369   surf_action_change_state(action, state);
 370   return;
 371 }
 372
 373 static double share_resources(double now)
 374 {
 375   s_surf_action_network_CM02_t s_action;
 376   surf_action_network_CM02_t action = NULL;
 377   xbt_swag_t running_actions =
 378       surf_network_model->common_public->states.running_action_set;
 379   double min;
 380
 381   min = generic_maxmin_share_resources(running_actions,
 382                                        xbt_swag_offset(s_action,
 383                                                        variable),
 384                                        network_maxmin_system,
 385                                        network_solve);
 386
 387   xbt_swag_foreach(action, running_actions) {
 388     if (action->latency > 0) {
 389       if (min < 0)
 390         min = action->latency;
 391       else if (action->latency < min)
 392         min = action->latency;
 393     }
 394   }
 395
 396   return min;
 397 }
 398
 399 static void update_actions_state(double now, double delta)
 400 {
 401   double deltap = 0.0;
 402   surf_action_network_CM02_t action = NULL;
 403   surf_action_network_CM02_t next_action = NULL;
 404   xbt_swag_t running_actions =
 405       surf_network_model->common_public->states.running_action_set;
 406   /*
 407      xbt_swag_t failed_actions =
 408      surf_network_model->common_public->states.failed_action_set;
 409    */
 410
 411   xbt_swag_foreach_safe(action, next_action, running_actions) {
 412     deltap = delta;
 413     if (action->latency > 0) {
 414       if (action->latency > deltap) {
 415         double_update(&(action->latency), deltap);
 416         deltap = 0.0;
 417       } else {
 418         double_update(&(deltap), action->latency);
 419         action->latency = 0.0;
 420       }
 421       if ((action->latency == 0.0) && !(action->suspended))
 422         lmm_update_variable_weight(network_maxmin_system, action->variable,
 423                                    action->lat_current);
 424     }
 425     double_update(&(action->generic_action.remains),
 426                   lmm_variable_getvalue(action->variable) * deltap);
 427     if (action->generic_action.max_duration != NO_MAX_DURATION)
 428       double_update(&(action->generic_action.max_duration), delta);
 429
 430     if ((action->generic_action.remains <= 0) &&
 431         (lmm_get_variable_weight(action->variable) > 0)) {
 432       action->generic_action.finish = surf_get_clock();
 433       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 434     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 435                (action->generic_action.max_duration <= 0)) {
 436       action->generic_action.finish = surf_get_clock();
 437       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 438     } else {                    /* Need to check that none of the model has failed */
 439       lmm_constraint_t cnst = NULL;
 440       int i = 0;
 441       link_CM02_t nw_link = NULL;
 442
 443       while ((cnst =
 444               lmm_get_cnst_from_var(network_maxmin_system,
 445                                     action->variable, i++))) {
 446         nw_link = lmm_constraint_id(cnst);
 447         if (nw_link->state_current == SURF_LINK_OFF) {
 448           action->generic_action.finish = surf_get_clock();
 449           action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
 450           break;
 451         }
 452       }
 453     }
 454   }
 455
 456   return;
 457 }
 458
 459 static void update_resource_state(void *id,
 460                                   tmgr_trace_event_t event_type,
 461                                   double value)
 462 {
 463   link_CM02_t nw_link = id;
 464   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 465   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 466   /*     value, event_type); */
 467
 468   if (event_type == nw_link->bw_event) {
 469     nw_link->bw_current = value;
 470     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 471                                 nw_link->bw_current);
 472   } else if (event_type == nw_link->lat_event) {
 473     double delta = value - nw_link->lat_current;
 474     lmm_variable_t var = NULL;
 475     surf_action_network_CM02_t action = NULL;
 476
 477     nw_link->lat_current = value;
 478     while (lmm_get_var_from_cnst
 479            (network_maxmin_system, nw_link->constraint, &var)) {
 480       action = lmm_variable_id(var);
 481       action->lat_current += delta;
 482       if (action->rate < 0)
 483         lmm_update_variable_bound(network_maxmin_system, action->variable,
 484                                   SG_TCP_CTE_GAMMA / (2.0 *
 485                                                       action->
 486                                                       lat_current));
 487       else
 488         lmm_update_variable_bound(network_maxmin_system, action->variable,
 489                                   min(action->rate,
 490                                       SG_TCP_CTE_GAMMA / (2.0 *
 491                                                           action->
 492                                                           lat_current)));
 493       if (!(action->suspended))
 494         lmm_update_variable_weight(network_maxmin_system, action->variable,
 495                                    action->lat_current);
 496       lmm_update_variable_latency(network_maxmin_system, action->variable,
 497                                   delta);
 498     }
 499   } else if (event_type == nw_link->state_event) {
 500     if (value > 0)
 501       nw_link->state_current = SURF_LINK_ON;
 502     else
 503       nw_link->state_current = SURF_LINK_OFF;
 504   } else {
 505     CRITICAL0("Unknown event ! \n");
 506     xbt_abort();
 507   }
 508
 509   return;
 510 }
 511
 512 static surf_action_t communicate(void *src, void *dst, double size,
 513                                  double rate)
 514 {
 515   surf_action_network_CM02_t action = NULL;
 516   /* LARGE PLATFORMS HACK:
 517      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 518      Use the cluster_id for ->id */
 519   network_card_CM02_t card_src = src;
 520   network_card_CM02_t card_dst = dst;
 521   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 522   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 523   /* LARGE PLATFORMS HACK:
 524      total_route_size = route_size + src->link_nb + dst->nb */
 525   int i;
 526
 527   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 528   /* LARGE PLATFORMS HACK:
 529      assert on total_route_size */
 530   xbt_assert2(route_size,
 531               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 532               card_src->name, card_dst->name);
 533
 534   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 535
 536   action->generic_action.using = 1;
 537   action->generic_action.cost = size;
 538   action->generic_action.remains = size;
 539   action->generic_action.max_duration = NO_MAX_DURATION;
 540   action->generic_action.start = surf_get_clock();
 541   action->generic_action.finish = -1.0;
 542   action->generic_action.model_type =
 543       (surf_model_t) surf_network_model;
 544   action->suspended = 0;        /* Should be useless because of the
 545                                    calloc but it seems to help valgrind... */
 546   action->generic_action.state_set =
 547       surf_network_model->common_public->states.running_action_set;
 548
 549   xbt_swag_insert(action, action->generic_action.state_set);
 550   action->rate = rate;
 551
 552   action->latency = 0.0;
 553   for (i = 0; i < route_size; i++)
 554     action->latency += route[i]->lat_current;
 555   /* LARGE PLATFORMS HACK:
 556      Add src->link and dst->link latencies */
 557   action->lat_current = action->latency;
 558
 559   /* LARGE PLATFORMS HACK:
 560      lmm_variable_new(..., total_route_size)*/
 561   if (action->latency > 0)
 562     action->variable =
 563         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 564                          route_size);
 565   else
 566     action->variable =
 567         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 568                          route_size);
 569
 570   if (action->rate < 0) {
 571     if (action->lat_current > 0)
 572       lmm_update_variable_bound(network_maxmin_system, action->variable,
 573                                 SG_TCP_CTE_GAMMA / (2.0 *
 574                                                     action->lat_current));
 575     else
 576       lmm_update_variable_bound(network_maxmin_system, action->variable,
 577                                 -1.0);
 578   } else {
 579     if (action->lat_current > 0)
 580       lmm_update_variable_bound(network_maxmin_system, action->variable,
 581                                 min(action->rate,
 582                                     SG_TCP_CTE_GAMMA / (2.0 *
 583                                                         action->
 584                                                         lat_current)));
 585     else
 586       lmm_update_variable_bound(network_maxmin_system, action->variable,
 587                                 action->rate);
 588   }
 589   lmm_update_variable_latency(network_maxmin_system, action->variable,
 590                               action->latency);
 591
 592   for (i = 0; i < route_size; i++)
 593     lmm_expand(network_maxmin_system, route[i]->constraint,
 594                action->variable, 1.0);
 595   /* LARGE PLATFORMS HACK:
 596      expand also with src->link and dst->link */
 597
 598   XBT_OUT;
 599
 600   return (surf_action_t) action;
 601 }
 602
 603 /* returns an array of link_CM02_t */
 604 static const void **get_route(void *src, void *dst)
 605 {
 606   network_card_CM02_t card_src = src;
 607   network_card_CM02_t card_dst = dst;
 608   return (const void **) ROUTE(card_src->id, card_dst->id);
 609 }
 610
 611 static int get_route_size(void *src, void *dst)
 612 {
 613   network_card_CM02_t card_src = src;
 614   network_card_CM02_t card_dst = dst;
 615   return ROUTE_SIZE(card_src->id, card_dst->id);
 616 }
 617
 618 static const char *get_link_name(const void *link)
 619 {
 620   return ((link_CM02_t) link)->name;
 621 }
 622
 623 static double get_link_bandwidth(const void *link)
 624 {
 625   return ((link_CM02_t) link)->bw_current;
 626 }
 627
 628 static double get_link_latency(const void *link)
 629 {
 630   return ((link_CM02_t) link)->lat_current;
 631 }
 632
 633 static xbt_dict_t get_properties(void *link)
 634 {
 635  return ((link_CM02_t) link)->properties;
 636 }
 637
 638 static void action_suspend(surf_action_t action)
 639 {
 640   ((surf_action_network_CM02_t) action)->suspended = 1;
 641   lmm_update_variable_weight(network_maxmin_system,
 642                              ((surf_action_network_CM02_t) action)->
 643                              variable, 0.0);
 644 }
 645
 646 static void action_resume(surf_action_t action)
 647 {
 648   if (((surf_action_network_CM02_t) action)->suspended) {
 649     lmm_update_variable_weight(network_maxmin_system,
 650                                ((surf_action_network_CM02_t) action)->
 651                                variable,
 652                                ((surf_action_network_CM02_t) action)->
 653                                lat_current);
 654     ((surf_action_network_CM02_t) action)->suspended = 0;
 655   }
 656 }
 657
 658 static int action_is_suspended(surf_action_t action)
 659 {
 660   return ((surf_action_network_CM02_t) action)->suspended;
 661 }
 662
 663 static void action_set_max_duration(surf_action_t action, double duration)
 664 {
 665   action->max_duration = duration;
 666 }
 667
 668 static void finalize(void)
 669 {
 670   int i, j;
 671
 672   xbt_dict_free(&network_card_set);
 673   xbt_dict_free(&link_set);
 674   xbt_swag_free(surf_network_model->common_public->states.
 675                 ready_action_set);
 676   xbt_swag_free(surf_network_model->common_public->states.
 677                 running_action_set);
 678   xbt_swag_free(surf_network_model->common_public->states.
 679                 failed_action_set);
 680   xbt_swag_free(surf_network_model->common_public->states.
 681                 done_action_set);
 682   free(surf_network_model->common_public);
 683   free(surf_network_model->common_private);
 684   free(surf_network_model->extension_public);
 685
 686   free(surf_network_model);
 687   surf_network_model = NULL;
 688
 689   loopback = NULL;
 690   for (i = 0; i < card_number; i++)
 691     for (j = 0; j < card_number; j++)
 692       free(ROUTE(i, j));
 693   free(routing_table);
 694   routing_table = NULL;
 695   free(routing_table_size);
 696   routing_table_size = NULL;
 697   card_number = 0;
 698 }
 699
 700 static void surf_network_model_init_internal(void)
 701 {
 702   s_surf_action_t action;
 703
 704   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 705
 706   surf_network_model->common_private =
 707       xbt_new0(s_surf_model_private_t, 1);
 708   surf_network_model->common_public =
 709       xbt_new0(s_surf_model_public_t, 1);
 710   surf_network_model->extension_public =
 711       xbt_new0(s_surf_network_model_extension_public_t, 1);
 712
 713   surf_network_model->common_public->states.ready_action_set =
 714       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 715   surf_network_model->common_public->states.running_action_set =
 716       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 717   surf_network_model->common_public->states.failed_action_set =
 718       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 719   surf_network_model->common_public->states.done_action_set =
 720       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 721
 722   surf_network_model->common_public->name_service = name_service;
 723   surf_network_model->common_public->get_resource_name =
 724       get_resource_name;
 725   surf_network_model->common_public->action_get_state =
 726       surf_action_get_state;
 727   surf_network_model->common_public->action_get_start_time =
 728       surf_action_get_start_time;
 729   surf_network_model->common_public->action_get_finish_time =
 730       surf_action_get_finish_time;
 731   surf_network_model->common_public->action_free = action_free;
 732   surf_network_model->common_public->action_use = action_use;
 733   surf_network_model->common_public->action_cancel = action_cancel;
 734   surf_network_model->common_public->action_recycle = action_recycle;
 735   surf_network_model->common_public->action_change_state =
 736       action_change_state;
 737   surf_network_model->common_public->action_set_data =
 738       surf_action_set_data;
 739   surf_network_model->common_public->name = "network";
 740
 741   surf_network_model->common_private->resource_used = resource_used;
 742   surf_network_model->common_private->share_resources = share_resources;
 743   surf_network_model->common_private->update_actions_state =
 744       update_actions_state;
 745   surf_network_model->common_private->update_resource_state =
 746       update_resource_state;
 747   surf_network_model->common_private->finalize = finalize;
 748
 749   surf_network_model->common_public->suspend = action_suspend;
 750   surf_network_model->common_public->resume = action_resume;
 751   surf_network_model->common_public->is_suspended = action_is_suspended;
 752   surf_cpu_model->common_public->set_max_duration =
 753       action_set_max_duration;
 754
 755   surf_network_model->extension_public->communicate = communicate;
 756   surf_network_model->extension_public->get_route = get_route;
 757   surf_network_model->extension_public->get_route_size = get_route_size;
 758   surf_network_model->extension_public->get_link_name = get_link_name;
 759   surf_network_model->extension_public->get_link_bandwidth =
 760       get_link_bandwidth;
 761   surf_network_model->extension_public->get_link_latency =
 762       get_link_latency;
 763
 764   surf_network_model->common_public->get_properties =  get_properties;
 765
 766   link_set = xbt_dict_new();
 767   network_card_set = xbt_dict_new();
 768
 769   if (!network_maxmin_system)
 770     network_maxmin_system = lmm_system_new();
 771 }
 772
 773 /***************************************************************************/
 774 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 775 /***************************************************************************/
 776 /* @TechReport{      rr-lip2002-40, */
 777 /*   author        = {Henri Casanova and Loris Marchal}, */
 778 /*   institution   = {LIP}, */
 779 /*   title         = {A Network Model for Simulation of Grid Application}, */
 780 /*   number        = {2002-40}, */
 781 /*   month         = {oct}, */
 782 /*   year          = {2002} */
 783 /* } */
 784 void surf_network_model_init_CM02(const char *filename)
 785 {
 786
 787   if (surf_network_model)
 788     return;
 789   surf_network_model_init_internal();
 790   define_callbacks(filename);
 791   xbt_dynar_push(model_list, &surf_network_model);
 792   network_solve = lmm_solve;
 793
 794   update_model_description(surf_network_model_description,
 795                               surf_network_model_description_size,
 796                               "CM02",
 797                               (surf_model_t) surf_network_model);
 798 }
 799
 800 void surf_network_model_init_Reno(const char *filename)
 801 {
 802   if (surf_network_model)
 803     return;
 804   surf_network_model_init_internal();
 805   define_callbacks(filename);
 806
 807   xbt_dynar_push(model_list, &surf_network_model);
 808   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 809                                     func_reno_fpi);
 810   network_solve = lagrange_solve;
 811
 812   update_model_description(surf_network_model_description,
 813                               surf_network_model_description_size,
 814                               "Reno",
 815                               (surf_model_t) surf_network_model);
 816 }
 817
 818 void surf_network_model_init_Vegas(const char *filename)
 819 {
 820   if (surf_network_model)
 821     return;
 822   surf_network_model_init_internal();
 823   define_callbacks(filename);
 824
 825   xbt_dynar_push(model_list, &surf_network_model);
 826   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 827                                     func_vegas_fpi);
 828   network_solve = lagrange_solve;
 829
 830   update_model_description(surf_network_model_description,
 831                               surf_network_model_description_size,
 832                               "Vegas",
 833                               (surf_model_t) surf_network_model);
 834 }
 835
 836 #ifdef HAVE_SDP
 837 void surf_network_model_init_SDP(const char *filename)
 838 {
 839   if (surf_network_model)
 840     return;
 841   surf_network_model_init_internal();
 842   define_callbacks(filename);
 843
 844   xbt_dynar_push(model_list, &surf_network_model);
 845   network_solve = sdp_solve;
 846
 847   update_model_description(surf_network_model_description,
 848                               surf_network_model_description_size,
 849                               "SDP",
 850                               (surf_model_t) surf_network_model);
 851 }
 852 #endif