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 double sg_tcp_gamma = 0.0;
  31
  32
  33 static void create_routing_table(void)
  34 {
  35   routing_table = xbt_new0(link_CM02_t *,       /*card_number * card_number */
  36                            host_number * host_number);
  37   routing_table_size =
  38     xbt_new0(int, /*card_number * card_number */ host_number * host_number);
  39 }
  40
  41 static void link_free(void *nw_link)
  42 {
  43   free(((link_CM02_t) nw_link)->name);
  44   xbt_dict_free(&(((link_CM02_t) nw_link)->properties));
  45   free(nw_link);
  46 }
  47
  48 static link_CM02_t link_new(char *name,
  49                             double bw_initial,
  50                             tmgr_trace_t bw_trace,
  51                             double lat_initial,
  52                             tmgr_trace_t lat_trace,
  53                             e_surf_link_state_t
  54                             state_initial,
  55                             tmgr_trace_t state_trace,
  56                             e_surf_link_sharing_policy_t
  57                             policy, xbt_dict_t properties)
  58 {
  59   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  60   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  61               "Link '%s' declared several times in the platform file.", name);
  62
  63   nw_link->model = (surf_model_t) surf_network_model;
  64   nw_link->name = name;
  65   nw_link->bw_current = bw_initial;
  66   if (bw_trace)
  67     nw_link->bw_event =
  68       tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  69   nw_link->lat_current = lat_initial;
  70   if (lat_trace)
  71     nw_link->lat_event =
  72       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  73   nw_link->state_current = state_initial;
  74   if (state_trace)
  75     nw_link->state_event =
  76       tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  77
  78   nw_link->constraint =
  79     lmm_constraint_new(network_maxmin_system, nw_link,
  80                        bandwidth_factor * nw_link->bw_current);
  81
  82   if (policy == SURF_LINK_FATPIPE)
  83     lmm_constraint_shared(nw_link->constraint);
  84
  85   nw_link->properties = properties;
  86
  87   current_property_set = properties;
  88
  89   xbt_dict_set(link_set, name, nw_link, link_free);
  90
  91   return nw_link;
  92 }
  93
  94 static void network_card_free(void *nw_card)
  95 {
  96   free(((network_card_CM02_t) nw_card)->name);
  97   free(nw_card);
  98 }
  99
 100 static int network_card_new(const char *card_name)
 101 {
 102   network_card_CM02_t card =
 103     xbt_dict_get_or_null(network_card_set, card_name);
 104
 105   if (!card) {
 106     card = xbt_new0(s_network_card_CM02_t, 1);
 107     card->name = xbt_strdup(card_name);
 108     card->id = host_number++;
 109     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 110   }
 111   return card->id;
 112 }
 113
 114 static void route_new(int src_id, int dst_id,
 115                       link_CM02_t * link_list, int nb_link)
 116 {
 117   ROUTE_SIZE(src_id, dst_id) = nb_link;
 118   ROUTE(src_id, dst_id) = link_list =
 119     xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 120 }
 121
 122 static void parse_link_init(void)
 123 {
 124   char *name_link;
 125   double bw_initial;
 126   tmgr_trace_t bw_trace;
 127   double lat_initial;
 128   tmgr_trace_t lat_trace;
 129   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 130   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 131   tmgr_trace_t state_trace;
 132
 133   name_link = xbt_strdup(A_surfxml_link_id);
 134   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 135   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 136   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 137   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 138
 139   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 140               || (A_surfxml_link_state ==
 141                   A_surfxml_link_state_OFF), "Invalid state");
 142   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 143     state_initial_link = SURF_LINK_ON;
 144   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 145     state_initial_link = SURF_LINK_OFF;
 146
 147   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 148     policy_initial_link = SURF_LINK_SHARED;
 149   else if (A_surfxml_link_sharing_policy ==
 150            A_surfxml_link_sharing_policy_FATPIPE)
 151     policy_initial_link = SURF_LINK_FATPIPE;
 152
 153   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 154
 155   link_new(name_link, bw_initial, bw_trace,
 156            lat_initial, lat_trace, state_initial_link, state_trace,
 157            policy_initial_link, xbt_dict_new());
 158
 159 }
 160
 161 static int src_id = -1;
 162 static int dst_id = -1;
 163
 164 static void parse_route_set_endpoints(void)
 165 {
 166   src_id = network_card_new(A_surfxml_route_src);
 167   dst_id = network_card_new(A_surfxml_route_dst);
 168   route_action = A_surfxml_route_action;
 169 }
 170
 171 static void parse_route_set_route(void)
 172 {
 173   char *name;
 174   if (src_id != -1 && dst_id != -1) {
 175     name = bprintf("%x#%x", src_id, dst_id);
 176     manage_route(route_table, name, route_action, 0);
 177     free(name);
 178   }
 179 }
 180
 181 static void add_loopback(void)
 182 {
 183   int i;
 184   /* Adding loopback if needed */
 185   for (i = 0; i < host_number; i++)
 186     if (!ROUTE_SIZE(i, i)) {
 187       if (!loopback)
 188         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 189                             498000000, NULL, 0.000015, NULL,
 190                             SURF_LINK_ON, NULL, SURF_LINK_FATPIPE, NULL);
 191       ROUTE_SIZE(i, i) = 1;
 192       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 193       ROUTE(i, i)[0] = loopback;
 194     }
 195 }
 196
 197 static void add_route(void)
 198 {
 199   xbt_ex_t e;
 200   int nb_link = 0;
 201   unsigned int cpt = 0;
 202   int link_list_capacity = 0;
 203   link_CM02_t *link_list = NULL;
 204   xbt_dict_cursor_t cursor = NULL;
 205   char *key, *data, *end;
 206   const char *sep = "#";
 207   xbt_dynar_t links, keys;
 208
 209   if (routing_table == NULL)
 210     create_routing_table();
 211
 212   xbt_dict_foreach(route_table, cursor, key, data) {
 213     char *link = NULL;
 214     nb_link = 0;
 215     links = (xbt_dynar_t) data;
 216     keys = xbt_str_split_str(key, sep);
 217
 218     link_list_capacity = xbt_dynar_length(links);
 219     link_list = xbt_new(link_CM02_t, link_list_capacity);
 220
 221     src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
 222     dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
 223     xbt_dynar_free(&keys);
 224
 225     xbt_dynar_foreach(links, cpt, link) {
 226       TRY {
 227         link_list[nb_link++] = xbt_dict_get(link_set, link);
 228       }
 229       CATCH(e) {
 230         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 231       }
 232     }
 233     route_new(src_id, dst_id, link_list, nb_link);
 234   }
 235 }
 236
 237 static void count_hosts(void)
 238 {
 239   host_number++;
 240 }
 241
 242
 243 static void add_traces(void)
 244 {
 245   xbt_dict_cursor_t cursor = NULL;
 246   char *trace_name, *elm;
 247
 248   static int called = 0;
 249   if (called)
 250     return;
 251   called = 1;
 252
 253   /* connect all traces relative to network */
 254   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 255     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 256     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 257
 258     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 259                 trace_name, elm);
 260     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 261                 trace_name, elm);
 262
 263     link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 264   }
 265
 266   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 267     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 268     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 269
 270     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 271                 trace_name, elm);
 272     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 273                 trace_name, elm);
 274
 275     link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 276   }
 277
 278   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 279     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 280     link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 281
 282     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 283                 trace_name, elm);
 284     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 285                 trace_name, elm);
 286
 287     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 288   }
 289 }
 290
 291 static void define_callbacks(const char *file)
 292 {
 293   /* Figuring out the network links */
 294   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 295   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 296   surfxml_add_callback(STag_surfxml_route_cb_list,
 297                        &parse_route_set_endpoints);
 298   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 299   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 300   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 301   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 302 }
 303
 304 static void *name_service(const char *name)
 305 {
 306   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 307   return card;
 308 }
 309
 310 static const char *get_resource_name(void *resource_id)
 311 {
 312   return ((network_card_CM02_t) resource_id)->name;
 313 }
 314
 315 static int resource_used(void *resource_id)
 316 {
 317   return lmm_constraint_used(network_maxmin_system,
 318                              ((link_CM02_t) resource_id)->constraint);
 319 }
 320
 321 static int action_free(surf_action_t action)
 322 {
 323   action->refcount--;
 324   if (!action->refcount) {
 325     xbt_swag_remove(action, action->state_set);
 326     if (((surf_action_network_CM02_t) action)->variable)
 327       lmm_variable_free(network_maxmin_system,
 328                         ((surf_action_network_CM02_t) action)->variable);
 329     free(action);
 330     return 1;
 331   }
 332   return 0;
 333 }
 334
 335 static void action_use(surf_action_t action)
 336 {
 337   action->refcount++;
 338 }
 339
 340 static void action_cancel(surf_action_t action)
 341 {
 342   return;
 343 }
 344
 345 static void action_recycle(surf_action_t action)
 346 {
 347   return;
 348 }
 349
 350 static void action_change_state(surf_action_t action,
 351                                 e_surf_action_state_t state)
 352 {
 353 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 354 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 355 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 356 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 357 /*     } */
 358
 359   surf_action_change_state(action, state);
 360   return;
 361 }
 362
 363 static double share_resources(double now)
 364 {
 365   s_surf_action_network_CM02_t s_action;
 366   surf_action_network_CM02_t action = NULL;
 367   xbt_swag_t running_actions =
 368     surf_network_model->common_public->states.running_action_set;
 369   double min;
 370
 371   min = generic_maxmin_share_resources(running_actions,
 372                                        xbt_swag_offset(s_action,
 373                                                        variable),
 374                                        network_maxmin_system, network_solve);
 375
 376 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 377
 378   xbt_swag_foreach(action, running_actions) {
 379     if (action->latency > 0) {
 380       if (min < 0)
 381         min = action->latency;
 382       else if (action->latency < min)
 383         min = action->latency;
 384     }
 385   }
 386
 387   return min;
 388 }
 389
 390 static void update_actions_state(double now, double delta)
 391 {
 392   double deltap = 0.0;
 393   surf_action_network_CM02_t action = NULL;
 394   surf_action_network_CM02_t next_action = NULL;
 395   xbt_swag_t running_actions =
 396     surf_network_model->common_public->states.running_action_set;
 397   /*
 398      xbt_swag_t failed_actions =
 399      surf_network_model->common_public->states.failed_action_set;
 400    */
 401
 402   xbt_swag_foreach_safe(action, next_action, running_actions) {
 403     deltap = delta;
 404     if (action->latency > 0) {
 405       if (action->latency > deltap) {
 406         double_update(&(action->latency), deltap);
 407         deltap = 0.0;
 408       } else {
 409         double_update(&(deltap), action->latency);
 410         action->latency = 0.0;
 411       }
 412       if ((action->latency == 0.0) && !(action->suspended))
 413         lmm_update_variable_weight(network_maxmin_system, action->variable,
 414                                    action->weight);
 415     }
 416     double_update(&(action->generic_action.remains),
 417                   lmm_variable_getvalue(action->variable) * deltap);
 418     if (action->generic_action.max_duration != NO_MAX_DURATION)
 419       double_update(&(action->generic_action.max_duration), delta);
 420
 421     if ((action->generic_action.remains <= 0) &&
 422         (lmm_get_variable_weight(action->variable) > 0)) {
 423       action->generic_action.finish = surf_get_clock();
 424       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 425     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 426                (action->generic_action.max_duration <= 0)) {
 427       action->generic_action.finish = surf_get_clock();
 428       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 429     }
 430   }
 431
 432   return;
 433 }
 434
 435 static void update_resource_state(void *id,
 436                                   tmgr_trace_event_t event_type,
 437                                   double value, double date)
 438 {
 439   link_CM02_t nw_link = id;
 440   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 441   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 442   /*     value, event_type); */
 443
 444   if (event_type == nw_link->bw_event) {
 445     double delta =
 446       weight_S_parameter / value - weight_S_parameter / nw_link->bw_current;
 447     lmm_variable_t var = NULL;
 448     lmm_element_t elem = NULL;
 449     surf_action_network_CM02_t action = NULL;
 450
 451     nw_link->bw_current = value;
 452     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 453                                 bandwidth_factor * nw_link->bw_current);
 454     if (weight_S_parameter > 0) {
 455       while ((var = lmm_get_var_from_cnst
 456               (network_maxmin_system, nw_link->constraint, &elem))) {
 457         action = lmm_variable_id(var);
 458         action->weight += delta;
 459         if (!(action->suspended))
 460           lmm_update_variable_weight(network_maxmin_system, action->variable,
 461                                      action->weight);
 462       }
 463     }
 464   } else if (event_type == nw_link->lat_event) {
 465     double delta = value - nw_link->lat_current;
 466     lmm_variable_t var = NULL;
 467     lmm_element_t elem = NULL;
 468     surf_action_network_CM02_t action = NULL;
 469
 470     nw_link->lat_current = value;
 471     while ((var = lmm_get_var_from_cnst
 472             (network_maxmin_system, nw_link->constraint, &elem))) {
 473       action = lmm_variable_id(var);
 474       action->lat_current += delta;
 475       action->weight += delta;
 476       if (action->rate < 0)
 477         lmm_update_variable_bound(network_maxmin_system, action->variable,
 478                                   sg_tcp_gamma / (2.0 * action->lat_current));
 479       else
 480         lmm_update_variable_bound(network_maxmin_system, action->variable,
 481                                   min(action->rate,
 482                                       sg_tcp_gamma / (2.0 * 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_gamma / (2.0 * action->lat_current));
 586     else
 587       lmm_update_variable_bound(network_maxmin_system, action->variable,
 588                                 -1.0);
 589   } else {
 590     if (action->lat_current > 0)
 591       lmm_update_variable_bound(network_maxmin_system, action->variable,
 592                                 min(action->rate,
 593                                     sg_tcp_gamma / (2.0 * action->lat_current)));
 594     else
 595       lmm_update_variable_bound(network_maxmin_system, action->variable,
 596                                 action->rate);
 597   }
 598
 599   for (i = 0; i < route_size; i++)
 600     lmm_expand(network_maxmin_system, route[i]->constraint,
 601                action->variable, 1.0);
 602   /* LARGE PLATFORMS HACK:
 603      expand also with src->link and dst->link */
 604
 605   XBT_OUT;
 606
 607   return (surf_action_t) action;
 608 }
 609
 610 /* returns an array of link_CM02_t */
 611 static const void **get_route(void *src, void *dst)
 612 {
 613   network_card_CM02_t card_src = src;
 614   network_card_CM02_t card_dst = dst;
 615   return (const void **) ROUTE(card_src->id, card_dst->id);
 616 }
 617
 618 static int get_route_size(void *src, void *dst)
 619 {
 620   network_card_CM02_t card_src = src;
 621   network_card_CM02_t card_dst = dst;
 622   return ROUTE_SIZE(card_src->id, card_dst->id);
 623 }
 624
 625 static const char *get_link_name(const void *link)
 626 {
 627   return ((link_CM02_t) link)->name;
 628 }
 629
 630 static double get_link_bandwidth(const void *link)
 631 {
 632   return ((link_CM02_t) link)->bw_current;
 633 }
 634
 635 static double get_link_latency(const void *link)
 636 {
 637   return ((link_CM02_t) link)->lat_current;
 638 }
 639
 640 static int link_shared(const void *link)
 641 {
 642   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 643 }
 644
 645 static xbt_dict_t get_properties(void *link)
 646 {
 647   return ((link_CM02_t) link)->properties;
 648 }
 649
 650 static void action_suspend(surf_action_t action)
 651 {
 652   ((surf_action_network_CM02_t) action)->suspended = 1;
 653   lmm_update_variable_weight(network_maxmin_system,
 654                              ((surf_action_network_CM02_t) action)->variable,
 655                              0.0);
 656 }
 657
 658 static void action_resume(surf_action_t action)
 659 {
 660   if (((surf_action_network_CM02_t) action)->suspended) {
 661     lmm_update_variable_weight(network_maxmin_system,
 662                                ((surf_action_network_CM02_t)
 663                                 action)->variable,
 664                                ((surf_action_network_CM02_t) action)->weight);
 665     ((surf_action_network_CM02_t) action)->suspended = 0;
 666   }
 667 }
 668
 669 static int action_is_suspended(surf_action_t action)
 670 {
 671   return ((surf_action_network_CM02_t) action)->suspended;
 672 }
 673
 674 static void action_set_max_duration(surf_action_t action, double duration)
 675 {
 676   action->max_duration = duration;
 677 }
 678
 679 static void finalize(void)
 680 {
 681   int i, j;
 682
 683   xbt_dict_free(&network_card_set);
 684   xbt_dict_free(&link_set);
 685   xbt_swag_free(surf_network_model->common_public->states.ready_action_set);
 686   xbt_swag_free(surf_network_model->common_public->states.running_action_set);
 687   xbt_swag_free(surf_network_model->common_public->states.failed_action_set);
 688   xbt_swag_free(surf_network_model->common_public->states.done_action_set);
 689   free(surf_network_model->common_public);
 690   free(surf_network_model->common_private);
 691   free(surf_network_model->extension_public);
 692
 693   free(surf_network_model);
 694   surf_network_model = NULL;
 695
 696   loopback = NULL;
 697   for (i = 0; i < host_number; i++)
 698     for (j = 0; j < host_number; j++)
 699       free(ROUTE(i, j));
 700   free(routing_table);
 701   routing_table = NULL;
 702   free(routing_table_size);
 703   routing_table_size = NULL;
 704   host_number = 0;
 705   lmm_system_free(network_maxmin_system);
 706   network_maxmin_system = NULL;
 707 }
 708
 709 static void surf_network_model_init_internal(void)
 710 {
 711   s_surf_action_t action;
 712
 713   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 714
 715   surf_network_model->common_private = xbt_new0(s_surf_model_private_t, 1);
 716   surf_network_model->common_public = xbt_new0(s_surf_model_public_t, 1);
 717   surf_network_model->extension_public =
 718     xbt_new0(s_surf_network_model_extension_public_t, 1);
 719
 720   surf_network_model->common_public->states.ready_action_set =
 721     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 722   surf_network_model->common_public->states.running_action_set =
 723     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 724   surf_network_model->common_public->states.failed_action_set =
 725     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 726   surf_network_model->common_public->states.done_action_set =
 727     xbt_swag_new(xbt_swag_offset(action, state_hookup));
 728
 729   surf_network_model->common_public->name_service = name_service;
 730   surf_network_model->common_public->get_resource_name = get_resource_name;
 731   surf_network_model->common_public->action_get_state = surf_action_get_state;
 732   surf_network_model->common_public->action_get_start_time =
 733     surf_action_get_start_time;
 734   surf_network_model->common_public->action_get_finish_time =
 735     surf_action_get_finish_time;
 736   surf_network_model->common_public->action_free = action_free;
 737   surf_network_model->common_public->action_use = action_use;
 738   surf_network_model->common_public->action_cancel = action_cancel;
 739   surf_network_model->common_public->action_recycle = action_recycle;
 740   surf_network_model->common_public->action_change_state =
 741     action_change_state;
 742   surf_network_model->common_public->action_set_data = surf_action_set_data;
 743   surf_network_model->common_public->name = "network";
 744
 745   surf_network_model->common_private->resource_used = resource_used;
 746   surf_network_model->common_private->share_resources = share_resources;
 747   surf_network_model->common_private->update_actions_state =
 748     update_actions_state;
 749   surf_network_model->common_private->update_resource_state =
 750     update_resource_state;
 751   surf_network_model->common_private->finalize = finalize;
 752
 753   surf_network_model->common_public->suspend = action_suspend;
 754   surf_network_model->common_public->resume = action_resume;
 755   surf_network_model->common_public->is_suspended = action_is_suspended;
 756   surf_cpu_model->common_public->set_max_duration = action_set_max_duration;
 757
 758   surf_network_model->extension_public->communicate = communicate;
 759   surf_network_model->extension_public->get_route = get_route;
 760   surf_network_model->extension_public->get_route_size = get_route_size;
 761   surf_network_model->extension_public->get_link_name = get_link_name;
 762   surf_network_model->extension_public->get_link_bandwidth =
 763     get_link_bandwidth;
 764   surf_network_model->extension_public->get_link_latency = get_link_latency;
 765   surf_network_model->extension_public->link_shared = link_shared;
 766
 767   surf_network_model->common_public->get_properties = get_properties;
 768
 769   link_set = xbt_dict_new();
 770   network_card_set = xbt_dict_new();
 771
 772   if (!network_maxmin_system)
 773     network_maxmin_system = lmm_system_new();
 774 }
 775
 776 /************************************************************************/
 777 /* New model based on optimizations discussed during this thesis        */
 778 /************************************************************************/
 779 void surf_network_model_init_LegrandVelho(const char *filename)
 780 {
 781
 782   if (surf_network_model)
 783     return;
 784   surf_network_model_init_internal();
 785   define_callbacks(filename);
 786   xbt_dynar_push(model_list, &surf_network_model);
 787   network_solve = lmm_solve;
 788
 789   latency_factor = 10.4;
 790   bandwidth_factor = 0.92;
 791   weight_S_parameter = 8775;
 792
 793   update_model_description(surf_network_model_description,
 794                            "LegrandVelho", (surf_model_t) surf_network_model);
 795 }
 796
 797 /***************************************************************************/
 798 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 799 /***************************************************************************/
 800 /* @TechReport{      rr-lip2002-40, */
 801 /*   author        = {Henri Casanova and Loris Marchal}, */
 802 /*   institution   = {LIP}, */
 803 /*   title         = {A Network Model for Simulation of Grid Application}, */
 804 /*   number        = {2002-40}, */
 805 /*   month         = {oct}, */
 806 /*   year          = {2002} */
 807 /* } */
 808 void surf_network_model_init_CM02(const char *filename)
 809 {
 810
 811   if (surf_network_model)
 812     return;
 813   surf_network_model_init_internal();
 814   define_callbacks(filename);
 815   xbt_dynar_push(model_list, &surf_network_model);
 816   network_solve = lmm_solve;
 817
 818   update_model_description(surf_network_model_description,
 819                            "CM02", (surf_model_t) surf_network_model);
 820 }
 821
 822 void surf_network_model_init_Reno(const char *filename)
 823 {
 824   if (surf_network_model)
 825     return;
 826   surf_network_model_init_internal();
 827   define_callbacks(filename);
 828
 829   xbt_dynar_push(model_list, &surf_network_model);
 830   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 831   network_solve = lagrange_solve;
 832
 833   latency_factor = 10.4;
 834   bandwidth_factor = 0.92;
 835   weight_S_parameter = 8775;
 836
 837   update_model_description(surf_network_model_description,
 838                            "Reno", (surf_model_t) surf_network_model);
 839 }
 840
 841
 842 void surf_network_model_init_Reno2(const char *filename)
 843 {
 844   if (surf_network_model)
 845     return;
 846   surf_network_model_init_internal();
 847   define_callbacks(filename);
 848
 849   xbt_dynar_push(model_list, &surf_network_model);
 850   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 851                                     func_reno2_fpi);
 852   network_solve = lagrange_solve;
 853
 854   latency_factor = 10.4;
 855   bandwidth_factor = 0.92;
 856   weight_S_parameter = 8775;
 857
 858   update_model_description(surf_network_model_description,
 859                            "Reno2", (surf_model_t) surf_network_model);
 860 }
 861
 862 void surf_network_model_init_Vegas(const char *filename)
 863 {
 864   if (surf_network_model)
 865     return;
 866   surf_network_model_init_internal();
 867   define_callbacks(filename);
 868
 869   xbt_dynar_push(model_list, &surf_network_model);
 870   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 871                                     func_vegas_fpi);
 872   network_solve = lagrange_solve;
 873
 874   latency_factor = 10.4;
 875   bandwidth_factor = 0.92;
 876   weight_S_parameter = 8775;
 877
 878   update_model_description(surf_network_model_description,
 879                            "Vegas", (surf_model_t) surf_network_model);
 880 }
 881
 882 #ifdef HAVE_SDP
 883 void surf_network_model_init_SDP(const char *filename)
 884 {
 885   if (surf_network_model)
 886     return;
 887   surf_network_model_init_internal();
 888   define_callbacks(filename);
 889
 890   xbt_dynar_push(model_list, &surf_network_model);
 891   network_solve = sdp_solve;
 892
 893   update_model_description(surf_network_model_description,
 894                            "SDP", (surf_model_t) surf_network_model);
 895 }
 896 #endif