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 double latency_factor = 1.0;    /* default value */
  22 double bandwidth_factor = 1.0;  /* default value */
  23 double weight_S_parameter = 0.0;        /* default value */
  24
  25 int card_number = 0;
  26 int host_number = 0;
  27 link_CM02_t **routing_table = NULL;
  28 int *routing_table_size = NULL;
  29 static link_CM02_t loopback = NULL;
  30
  31 static void create_routing_table(void)
  32 {
  33   routing_table = xbt_new0(link_CM02_t *,       /*card_number * card_number */
  34                            host_number * host_number);
  35   routing_table_size =
  36     xbt_new0(int, /*card_number * card_number */ host_number * host_number);
  37 }
  38
  39 static void link_free(void *nw_link)
  40 {
  41   free(((link_CM02_t) nw_link)->name);
  42   xbt_dict_free(&(((link_CM02_t) nw_link)->properties));
  43   free(nw_link);
  44 }
  45
  46 static link_CM02_t link_new(char *name,
  47                             double bw_initial,
  48                             tmgr_trace_t bw_trace,
  49                             double lat_initial,
  50                             tmgr_trace_t lat_trace,
  51                             e_surf_link_state_t
  52                             state_initial,
  53                             tmgr_trace_t state_trace,
  54                             e_surf_link_sharing_policy_t
  55                             policy, xbt_dict_t properties)
  56 {
  57   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  58   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  59               "Link '%s' declared several times in the platform file.", name);
  60
  61   nw_link->model = (surf_model_t) surf_network_model;
  62   nw_link->name = name;
  63   nw_link->bw_current = bw_initial;
  64   if (bw_trace)
  65     nw_link->bw_event =
  66       tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  67   nw_link->lat_current = lat_initial;
  68   if (lat_trace)
  69     nw_link->lat_event =
  70       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  71   nw_link->state_current = state_initial;
  72   if (state_trace)
  73     nw_link->state_event =
  74       tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  75
  76   nw_link->constraint =
  77     lmm_constraint_new(network_maxmin_system, nw_link,
  78                        bandwidth_factor * nw_link->bw_current);
  79
  80   if (policy == SURF_LINK_FATPIPE)
  81     lmm_constraint_shared(nw_link->constraint);
  82
  83   nw_link->properties = properties;
  84
  85   current_property_set = properties;
  86
  87   xbt_dict_set(link_set, name, nw_link, link_free);
  88
  89   return nw_link;
  90 }
  91
  92 static void network_card_free(void *nw_card)
  93 {
  94   free(((network_card_CM02_t) nw_card)->name);
  95   free(nw_card);
  96 }
  97
  98 static int network_card_new(const char *card_name)
  99 {
 100   network_card_CM02_t card =
 101     xbt_dict_get_or_null(network_card_set, card_name);
 102
 103   if (!card) {
 104     card = xbt_new0(s_network_card_CM02_t, 1);
 105     card->name = xbt_strdup(card_name);
 106     card->id = host_number++;
 107     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 108   }
 109   return card->id;
 110 }
 111
 112 static void route_new(int src_id, int dst_id,
 113                       link_CM02_t * link_list, int nb_link)
 114 {
 115   ROUTE_SIZE(src_id, dst_id) = nb_link;
 116   ROUTE(src_id, dst_id) = link_list =
 117     xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 118 }
 119
 120 static void parse_link_init(void)
 121 {
 122   char *name_link;
 123   double bw_initial;
 124   tmgr_trace_t bw_trace;
 125   double lat_initial;
 126   tmgr_trace_t lat_trace;
 127   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 128   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 129   tmgr_trace_t state_trace;
 130
 131   name_link = xbt_strdup(A_surfxml_link_id);
 132   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 133   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 134   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 135   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 136
 137   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 138               || (A_surfxml_link_state ==
 139                   A_surfxml_link_state_OFF), "Invalid state");
 140   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 141     state_initial_link = SURF_LINK_ON;
 142   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 143     state_initial_link = SURF_LINK_OFF;
 144
 145   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 146     policy_initial_link = SURF_LINK_SHARED;
 147   else if (A_surfxml_link_sharing_policy ==
 148            A_surfxml_link_sharing_policy_FATPIPE)
 149     policy_initial_link = SURF_LINK_FATPIPE;
 150
 151   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 152
 153   link_new(name_link, bw_initial, bw_trace,
 154            lat_initial, lat_trace, state_initial_link, state_trace,
 155            policy_initial_link, xbt_dict_new());
 156
 157 }
 158
 159 static int src_id = -1;
 160 static int dst_id = -1;
 161
 162 static void parse_route_set_endpoints(void)
 163 {
 164   src_id = network_card_new(A_surfxml_route_src);
 165   dst_id = network_card_new(A_surfxml_route_dst);
 166   route_action = A_surfxml_route_action;
 167 }
 168
 169 static void parse_route_set_route(void)
 170 {
 171   char *name;
 172   if (src_id != -1 && dst_id != -1) {
 173     name = bprintf("%x#%x", src_id, dst_id);
 174     manage_route(route_table, name, route_action, 0);
 175     free(name);
 176   }
 177 }
 178
 179 static void add_loopback(void)
 180 {
 181   int i;
 182   /* Adding loopback if needed */
 183   for (i = 0; i < host_number; i++)
 184     if (!ROUTE_SIZE(i, i)) {
 185       if (!loopback)
 186         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 187                             498000000, NULL, 0.000015, NULL,
 188                             SURF_LINK_ON, NULL, 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)
 208     create_routing_table();
 209
 210   xbt_dict_foreach(route_table, cursor, key, data) {
 211     char *link = NULL;
 212     nb_link = 0;
 213     links = (xbt_dynar_t) data;
 214     keys = xbt_str_split_str(key, sep);
 215
 216     link_list_capacity = xbt_dynar_length(links);
 217     link_list = xbt_new(link_CM02_t, link_list_capacity);
 218
 219     src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
 220     dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
 221     xbt_dynar_free(&keys);
 222
 223     xbt_dynar_foreach(links, cpt, link) {
 224       TRY {
 225         link_list[nb_link++] = xbt_dict_get(link_set, link);
 226       }
 227       CATCH(e) {
 228         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 229       }
 230     }
 231     route_new(src_id, dst_id, link_list, nb_link);
 232   }
 233 }
 234
 235 static void count_hosts(void)
 236 {
 237   host_number++;
 238 }
 239
 240
 241 static void add_traces(void)
 242 {
 243   xbt_dict_cursor_t cursor = NULL;
 244   char *trace_name, *elm;
 245
 246   static int called = 0;
 247   if (called)
 248     return;
 249   called = 1;
 250
 251   /* connect all traces relative to network */
 252   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 253     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 254     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 255
 256     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 257                 trace_name, elm);
 258     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 259                 trace_name, elm);
 260
 261     link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 262   }
 263
 264   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 265     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 266     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 267
 268     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 269                 trace_name, elm);
 270     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 271                 trace_name, elm);
 272
 273     link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 274   }
 275
 276   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 277     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 278     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 279
 280     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 281                 trace_name, elm);
 282     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 283                 trace_name, elm);
 284
 285     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 286   }
 287 }
 288
 289 static void define_callbacks(const char *file)
 290 {
 291   /* Figuring out the network links */
 292   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 293   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 294   surfxml_add_callback(STag_surfxml_route_cb_list,
 295                        &parse_route_set_endpoints);
 296   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 297   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 298   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 299   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 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)->constraint);
 317 }
 318
 319 static int action_free(surf_action_t action)
 320 {
 321   action->refcount--;
 322   if (!action->refcount) {
 323     xbt_swag_remove(action, action->state_set);
 324     if (((surf_action_network_CM02_t) action)->variable)
 325       lmm_variable_free(network_maxmin_system,
 326                         ((surf_action_network_CM02_t) action)->variable);
 327     free(action);
 328     return 1;
 329   }
 330   return 0;
 331 }
 332
 333 static void action_use(surf_action_t action)
 334 {
 335   action->refcount++;
 336 }
 337
 338 static void action_cancel(surf_action_t action)
 339 {
 340   return;
 341 }
 342
 343 static void action_recycle(surf_action_t action)
 344 {
 345   return;
 346 }
 347
 348 static void action_change_state(surf_action_t action,
 349                                 e_surf_action_state_t state)
 350 {
 351 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 352 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 353 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 354 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 355 /*     } */
 356
 357   surf_action_change_state(action, state);
 358   return;
 359 }
 360
 361 static double share_resources(double now)
 362 {
 363   s_surf_action_network_CM02_t s_action;
 364   surf_action_network_CM02_t action = NULL;
 365   xbt_swag_t running_actions =
 366     surf_network_model->common_public->states.running_action_set;
 367   double min;
 368
 369   min = generic_maxmin_share_resources(running_actions,
 370                                        xbt_swag_offset(s_action,
 371                                                        variable),
 372                                        network_maxmin_system, network_solve);
 373
 374 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 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->weight);
 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 <= 0) &&
 420         (lmm_get_variable_weight(action->variable) > 0)) {
 421       action->generic_action.finish = surf_get_clock();
 422       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 423     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 424                (action->generic_action.max_duration <= 0)) {
 425       action->generic_action.finish = surf_get_clock();
 426       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 427     }
 428   }
 429
 430   return;
 431 }
 432
 433 static void update_resource_state(void *id,
 434                                   tmgr_trace_event_t event_type,
 435                                   double value, double date)
 436 {
 437   link_CM02_t nw_link = id;
 438   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 439   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 440   /*     value, event_type); */
 441
 442   if (event_type == nw_link->bw_event) {
 443     double delta =
 444       weight_S_parameter / value - weight_S_parameter / nw_link->bw_current;
 445     lmm_variable_t var = NULL;
 446     lmm_element_t elem = NULL;
 447     surf_action_network_CM02_t action = NULL;
 448
 449     nw_link->bw_current = value;
 450     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 451                                 bandwidth_factor * nw_link->bw_current);
 452     if (weight_S_parameter > 0) {
 453       while ((var = lmm_get_var_from_cnst
 454               (network_maxmin_system, nw_link->constraint, &elem))) {
 455         action = lmm_variable_id(var);
 456         action->weight += delta;
 457         if (!(action->suspended))
 458           lmm_update_variable_weight(network_maxmin_system, action->variable,
 459                                      action->weight);
 460       }
 461     }
 462   } else if (event_type == nw_link->lat_event) {
 463     double delta = value - nw_link->lat_current;
 464     lmm_variable_t var = NULL;
 465     lmm_element_t elem = NULL;
 466     surf_action_network_CM02_t action = NULL;
 467
 468     nw_link->lat_current = value;
 469     while ((var = lmm_get_var_from_cnst
 470             (network_maxmin_system, nw_link->constraint, &elem))) {
 471       action = lmm_variable_id(var);
 472       action->lat_current += delta;
 473       action->weight += delta;
 474       if (action->rate < 0)
 475         lmm_update_variable_bound(network_maxmin_system, action->variable,
 476                                   SG_TCP_CTE_GAMMA / (2.0 *
 477                                                       action->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->lat_current)));
 483       if (!(action->suspended))
 484         lmm_update_variable_weight(network_maxmin_system, action->variable,
 485                                    action->weight);
 486
 487     }
 488   } else if (event_type == nw_link->state_event) {
 489     if (value > 0)
 490       nw_link->state_current = SURF_LINK_ON;
 491     else {
 492       lmm_constraint_t cnst = nw_link->constraint;
 493       lmm_variable_t var = NULL;
 494       lmm_element_t elem = NULL;
 495
 496       nw_link->state_current = SURF_LINK_OFF;
 497       while ((var = lmm_get_var_from_cnst
 498               (network_maxmin_system, cnst, &elem))) {
 499         surf_action_t action = lmm_variable_id(var);
 500
 501         if (surf_action_get_state(action) == SURF_ACTION_RUNNING ||
 502             surf_action_get_state(action) == SURF_ACTION_READY) {
 503           action->finish = date;
 504           action_change_state(action, SURF_ACTION_FAILED);
 505         }
 506       }
 507     }
 508   } else {
 509     CRITICAL0("Unknown event ! \n");
 510     xbt_abort();
 511   }
 512
 513   return;
 514 }
 515
 516 static surf_action_t communicate(void *src, void *dst, double size,
 517                                  double rate)
 518 {
 519   surf_action_network_CM02_t action = NULL;
 520   /* LARGE PLATFORMS HACK:
 521      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 522      Use the cluster_id for ->id */
 523   network_card_CM02_t card_src = src;
 524   network_card_CM02_t card_dst = dst;
 525   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 526   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 527   /* LARGE PLATFORMS HACK:
 528      total_route_size = route_size + src->link_nb + dst->nb */
 529   int i;
 530
 531   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 532   /* LARGE PLATFORMS HACK:
 533      assert on total_route_size */
 534   xbt_assert2(route_size,
 535               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 536               card_src->name, card_dst->name);
 537
 538   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 539
 540   action->generic_action.refcount = 1;
 541   action->generic_action.cost = size;
 542   action->generic_action.remains = size;
 543   action->generic_action.max_duration = NO_MAX_DURATION;
 544   action->generic_action.start = surf_get_clock();
 545   action->generic_action.finish = -1.0;
 546   action->generic_action.model_type = (surf_model_t) surf_network_model;
 547   action->suspended = 0;        /* Should be useless because of the
 548                                    calloc but it seems to help valgrind... */
 549   action->generic_action.state_set =
 550     surf_network_model->common_public->states.running_action_set;
 551   for (i = 0; i < route_size; i++)
 552     if (route[i]->state_current == SURF_LINK_OFF) {
 553       action->generic_action.state_set =
 554         surf_network_model->common_public->states.failed_action_set;
 555       break;
 556     }
 557
 558   xbt_swag_insert(action, action->generic_action.state_set);
 559   action->rate = rate;
 560
 561   action->latency = 0.0;
 562   action->weight = 0.0;
 563   for (i = 0; i < route_size; i++) {
 564     action->latency += route[i]->lat_current;
 565     action->weight +=
 566       route[i]->lat_current + weight_S_parameter / route[i]->bw_current;
 567   }
 568   /* LARGE PLATFORMS HACK:
 569      Add src->link and dst->link latencies */
 570   action->lat_current = action->latency;
 571   action->latency *= latency_factor;
 572
 573   /* LARGE PLATFORMS HACK:
 574      lmm_variable_new(..., total_route_size) */
 575   if (action->latency > 0)
 576     action->variable =
 577       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0, route_size);
 578   else
 579     action->variable =
 580       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0, route_size);
 581
 582   if (action->rate < 0) {
 583     if (action->lat_current > 0)
 584       lmm_update_variable_bound(network_maxmin_system, action->variable,
 585                                 SG_TCP_CTE_GAMMA / (2.0 *
 586                                                     action->lat_current));
 587     else
 588       lmm_update_variable_bound(network_maxmin_system, action->variable,
 589                                 -1.0);
 590   } else {
 591     if (action->lat_current > 0)
 592       lmm_update_variable_bound(network_maxmin_system, action->variable,
 593                                 min(action->rate,
 594                                     SG_TCP_CTE_GAMMA / (2.0 *
 595                                                         action->lat_current)));
 596     else
 597       lmm_update_variable_bound(network_maxmin_system, action->variable,
 598                                 action->rate);
 599   }
 600
 601   for (i = 0; i < route_size; i++)
 602     lmm_expand(network_maxmin_system, route[i]->constraint,
 603                action->variable, 1.0);
 604   /* LARGE PLATFORMS HACK:
 605      expand also with src->link and dst->link */
 606
 607   XBT_OUT;
 608
 609   return (surf_action_t) action;
 610 }
 611
 612 /* returns an array of link_CM02_t */
 613 static const void **get_route(void *src, void *dst)
 614 {
 615   network_card_CM02_t card_src = src;
 616   network_card_CM02_t card_dst = dst;
 617   return (const void **) ROUTE(card_src->id, card_dst->id);
 618 }
 619
 620 static int get_route_size(void *src, void *dst)
 621 {
 622   network_card_CM02_t card_src = src;
 623   network_card_CM02_t card_dst = dst;
 624   return ROUTE_SIZE(card_src->id, card_dst->id);
 625 }
 626
 627 static const char *get_link_name(const void *link)
 628 {
 629   return ((link_CM02_t) link)->name;
 630 }
 631
 632 static double get_link_bandwidth(const void *link)
 633 {
 634   return ((link_CM02_t) link)->bw_current;
 635 }
 636
 637 static double get_link_latency(const void *link)
 638 {
 639   return ((link_CM02_t) link)->lat_current;
 640 }
 641
 642 static int link_shared(const void *link)
 643 {
 644   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 645 }
 646
 647 static xbt_dict_t get_properties(void *link)
 648 {
 649   return ((link_CM02_t) link)->properties;
 650 }
 651
 652 static void action_suspend(surf_action_t action)
 653 {
 654   ((surf_action_network_CM02_t) action)->suspended = 1;
 655   lmm_update_variable_weight(network_maxmin_system,
 656                              ((surf_action_network_CM02_t) action)->variable,
 657                              0.0);
 658 }
 659
 660 static void action_resume(surf_action_t action)
 661 {
 662   if (((surf_action_network_CM02_t) action)->suspended) {
 663     lmm_update_variable_weight(network_maxmin_system,
 664                                ((surf_action_network_CM02_t)
 665                                 action)->variable,
 666                                ((surf_action_network_CM02_t) action)->weight);
 667     ((surf_action_network_CM02_t) action)->suspended = 0;
 668   }
 669 }
 670
 671 static int action_is_suspended(surf_action_t action)
 672 {
 673   return ((surf_action_network_CM02_t) action)->suspended;
 674 }
 675
 676 static void action_set_max_duration(surf_action_t action, double duration)
 677 {
 678   action->max_duration = duration;
 679 }
 680
 681 static void finalize(void)
 682 {
 683   int i, j;
 684
 685   xbt_dict_free(&network_card_set);
 686   xbt_dict_free(&link_set);
 687   xbt_swag_free(surf_network_model->common_public->states.ready_action_set);
 688   xbt_swag_free(surf_network_model->common_public->states.running_action_set);
 689   xbt_swag_free(surf_network_model->common_public->states.failed_action_set);
 690   xbt_swag_free(surf_network_model->common_public->states.done_action_set);
 691   free(surf_network_model->common_public);
 692   free(surf_network_model->common_private);
 693   free(surf_network_model->extension_public);
 694
 695   free(surf_network_model);
 696   surf_network_model = NULL;
 697
 698   loopback = NULL;
 699   for (i = 0; i < host_number; i++)
 700     for (j = 0; j < host_number; j++)
 701       free(ROUTE(i, j));
 702   free(routing_table);
 703   routing_table = NULL;
 704   free(routing_table_size);
 705   routing_table_size = NULL;
 706   host_number = 0;
 707   lmm_system_free(network_maxmin_system);
 708   network_maxmin_system = NULL;
 709 }
 710
 711 static void surf_network_model_init_internal(void)
 712 {
 713   s_surf_action_t action;
 714
 715   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 716
 717   surf_network_model->common_private = xbt_new0(s_surf_model_private_t, 1);
 718   surf_network_model->common_public = xbt_new0(s_surf_model_public_t, 1);
 719   surf_network_model->extension_public =
 720     xbt_new0(s_surf_network_model_extension_public_t, 1);
 721
 722   surf_network_model->common_public->states.ready_action_set =
 723     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 724   surf_network_model->common_public->states.running_action_set =
 725     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 726   surf_network_model->common_public->states.failed_action_set =
 727     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 728   surf_network_model->common_public->states.done_action_set =
 729     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 730
 731   surf_network_model->common_public->name_service = name_service;
 732   surf_network_model->common_public->get_resource_name = get_resource_name;
 733   surf_network_model->common_public->action_get_state = surf_action_get_state;
 734   surf_network_model->common_public->action_get_start_time =
 735     surf_action_get_start_time;
 736   surf_network_model->common_public->action_get_finish_time =
 737     surf_action_get_finish_time;
 738   surf_network_model->common_public->action_free = action_free;
 739   surf_network_model->common_public->action_use = action_use;
 740   surf_network_model->common_public->action_cancel = action_cancel;
 741   surf_network_model->common_public->action_recycle = action_recycle;
 742   surf_network_model->common_public->action_change_state =
 743     action_change_state;
 744   surf_network_model->common_public->action_set_data = surf_action_set_data;
 745   surf_network_model->common_public->name = "network";
 746
 747   surf_network_model->common_private->resource_used = resource_used;
 748   surf_network_model->common_private->share_resources = share_resources;
 749   surf_network_model->common_private->update_actions_state =
 750     update_actions_state;
 751   surf_network_model->common_private->update_resource_state =
 752     update_resource_state;
 753   surf_network_model->common_private->finalize = finalize;
 754
 755   surf_network_model->common_public->suspend = action_suspend;
 756   surf_network_model->common_public->resume = action_resume;
 757   surf_network_model->common_public->is_suspended = action_is_suspended;
 758   surf_cpu_model->common_public->set_max_duration = action_set_max_duration;
 759
 760   surf_network_model->extension_public->communicate = communicate;
 761   surf_network_model->extension_public->get_route = get_route;
 762   surf_network_model->extension_public->get_route_size = get_route_size;
 763   surf_network_model->extension_public->get_link_name = get_link_name;
 764   surf_network_model->extension_public->get_link_bandwidth =
 765     get_link_bandwidth;
 766   surf_network_model->extension_public->get_link_latency = get_link_latency;
 767   surf_network_model->extension_public->link_shared = link_shared;
 768
 769   surf_network_model->common_public->get_properties = get_properties;
 770
 771   link_set = xbt_dict_new();
 772   network_card_set = xbt_dict_new();
 773
 774   if (!network_maxmin_system)
 775     network_maxmin_system = lmm_system_new();
 776 }
 777
 778 /************************************************************************/
 779 /* New model based on optimizations discussed during this thesis        */
 780 /************************************************************************/
 781 void surf_network_model_init_LegrandVelho(const char *filename)
 782 {
 783
 784   if (surf_network_model)
 785     return;
 786   surf_network_model_init_internal();
 787   define_callbacks(filename);
 788   xbt_dynar_push(model_list, &surf_network_model);
 789   network_solve = lmm_solve;
 790
 791   latency_factor = 10.4;
 792   bandwidth_factor = 0.92;
 793   weight_S_parameter = 8775;
 794
 795   update_model_description(surf_network_model_description,
 796                            "LegrandVelho", (surf_model_t) surf_network_model);
 797 }
 798
 799 /***************************************************************************/
 800 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 801 /***************************************************************************/
 802 /* @TechReport{      rr-lip2002-40, */
 803 /*   author        = {Henri Casanova and Loris Marchal}, */
 804 /*   institution   = {LIP}, */
 805 /*   title         = {A Network Model for Simulation of Grid Application}, */
 806 /*   number        = {2002-40}, */
 807 /*   month         = {oct}, */
 808 /*   year          = {2002} */
 809 /* } */
 810 void surf_network_model_init_CM02(const char *filename)
 811 {
 812
 813   if (surf_network_model)
 814     return;
 815   surf_network_model_init_internal();
 816   define_callbacks(filename);
 817   xbt_dynar_push(model_list, &surf_network_model);
 818   network_solve = lmm_solve;
 819
 820   update_model_description(surf_network_model_description,
 821                            "CM02", (surf_model_t) surf_network_model);
 822 }
 823
 824 void surf_network_model_init_Reno(const char *filename)
 825 {
 826   if (surf_network_model)
 827     return;
 828   surf_network_model_init_internal();
 829   define_callbacks(filename);
 830
 831   xbt_dynar_push(model_list, &surf_network_model);
 832   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 833   network_solve = lagrange_solve;
 834
 835   latency_factor = 10.4;
 836   bandwidth_factor = 0.92;
 837   weight_S_parameter = 8775;
 838
 839   update_model_description(surf_network_model_description,
 840                            "Reno", (surf_model_t) surf_network_model);
 841 }
 842
 843
 844 void surf_network_model_init_Reno2(const char *filename)
 845 {
 846   if (surf_network_model)
 847     return;
 848   surf_network_model_init_internal();
 849   define_callbacks(filename);
 850
 851   xbt_dynar_push(model_list, &surf_network_model);
 852   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 853                                     func_reno2_fpi);
 854   network_solve = lagrange_solve;
 855
 856   latency_factor = 10.4;
 857   bandwidth_factor = 0.92;
 858   weight_S_parameter = 8775;
 859
 860   update_model_description(surf_network_model_description,
 861                            "Reno2", (surf_model_t) surf_network_model);
 862 }
 863
 864 void surf_network_model_init_Vegas(const char *filename)
 865 {
 866   if (surf_network_model)
 867     return;
 868   surf_network_model_init_internal();
 869   define_callbacks(filename);
 870
 871   xbt_dynar_push(model_list, &surf_network_model);
 872   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 873                                     func_vegas_fpi);
 874   network_solve = lagrange_solve;
 875
 876   latency_factor = 10.4;
 877   bandwidth_factor = 0.92;
 878   weight_S_parameter = 8775;
 879
 880   update_model_description(surf_network_model_description,
 881                            "Vegas", (surf_model_t) surf_network_model);
 882 }
 883
 884 #ifdef HAVE_SDP
 885 void surf_network_model_init_SDP(const char *filename)
 886 {
 887   if (surf_network_model)
 888     return;
 889   surf_network_model_init_internal();
 890   define_callbacks(filename);
 891
 892   xbt_dynar_push(model_list, &surf_network_model);
 893   network_solve = sdp_solve;
 894
 895   update_model_description(surf_network_model_description,
 896                            "SDP", (surf_model_t) surf_network_model);
 897 }
 898 #endif