src/surf/network.c

   1 /*      $Id$     */
   2
   3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved.                  */
   4
   5 /* This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the license (GNU LGPL) which comes with this package. */
   7
   8 #include "network_private.h"
   9 #include "xbt/log.h"
  10 #include "xbt/str.h"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  13                                 "Logging specific to the SURF network module");
  14
  15 surf_network_model_t surf_network_model = NULL;
  16 static lmm_system_t network_maxmin_system = NULL;
  17 static void (*network_solve) (lmm_system_t) = NULL;
  18 xbt_dict_t link_set = NULL;
  19 xbt_dict_t network_card_set = NULL;
  20
  21 int card_number = 0;
  22 int host_number = 0;
  23 link_CM02_t **routing_table = NULL;
  24 int *routing_table_size = NULL;
  25 static link_CM02_t loopback = NULL;
  26
  27 static void create_routing_table(void)
  28 {
  29   routing_table =
  30       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  31   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  32 }
  33
  34 static void link_free(void *nw_link)
  35 {
  36   free(((link_CM02_t) nw_link)->name);
  37   free(nw_link);
  38 }
  39
  40 static link_CM02_t link_new(char *name,
  41                             double bw_initial,
  42                             tmgr_trace_t bw_trace,
  43                             double lat_initial,
  44                             tmgr_trace_t lat_trace,
  45                             e_surf_link_state_t
  46                             state_initial,
  47                             tmgr_trace_t state_trace,
  48                             e_surf_link_sharing_policy_t
  49                             policy, xbt_dict_t properties)
  50 {
  51   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  52   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  53               "Link '%s' declared several times in the platform file.", name);
  54
  55   nw_link->model = (surf_model_t) surf_network_model;
  56   nw_link->name = name;
  57   nw_link->bw_current = bw_initial;
  58   if (bw_trace)
  59     nw_link->bw_event =
  60         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  61   nw_link->lat_current = lat_initial;
  62   if (lat_trace)
  63     nw_link->lat_event =
  64         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  65   nw_link->state_current = state_initial;
  66   if (state_trace)
  67     nw_link->state_event =
  68         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  69
  70   nw_link->constraint =
  71       lmm_constraint_new(network_maxmin_system, nw_link,
  72                          nw_link->bw_current);
  73
  74   if (policy == SURF_LINK_FATPIPE)
  75     lmm_constraint_shared(nw_link->constraint);
  76
  77   nw_link->properties = properties;
  78
  79   current_property_set = properties;
  80
  81   xbt_dict_set(link_set, name, nw_link, link_free);
  82
  83   return nw_link;
  84 }
  85
  86 static void network_card_free(void *nw_card)
  87 {
  88   free(((network_card_CM02_t) nw_card)->name);
  89   free(nw_card);
  90 }
  91
  92 static int network_card_new(const char *card_name)
  93 {
  94   network_card_CM02_t card =
  95       xbt_dict_get_or_null(network_card_set, card_name);
  96
  97   if (!card) {
  98     card = xbt_new0(s_network_card_CM02_t, 1);
  99     card->name = xbt_strdup(card_name);
 100     card->id = host_number++;
 101     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 102   }
 103   return card->id;
 104 }
 105
 106 static void route_new(int src_id, int dst_id,
 107                       link_CM02_t * link_list, int nb_link)
 108 {
 109   ROUTE_SIZE(src_id, dst_id) = nb_link;
 110   ROUTE(src_id, dst_id) = link_list =
 111       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 112 }
 113
 114 static void parse_link_init(void)
 115 {
 116   char *name_link;
 117   double bw_initial;
 118   tmgr_trace_t bw_trace;
 119   double lat_initial;
 120   tmgr_trace_t lat_trace;
 121   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 122   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 123   tmgr_trace_t state_trace;
 124
 125   name_link = xbt_strdup(A_surfxml_link_id);
 126   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 127   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 128   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 129   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 130
 131   xbt_assert0((A_surfxml_link_state ==
 132                A_surfxml_link_state_ON)
 133               || (A_surfxml_link_state ==
 134                   A_surfxml_link_state_OFF), "Invalid state");
 135   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 136     state_initial_link = SURF_LINK_ON;
 137   else if (A_surfxml_link_state ==
 138            A_surfxml_link_state_OFF)
 139     state_initial_link = SURF_LINK_OFF;
 140
 141   if (A_surfxml_link_sharing_policy ==
 142       A_surfxml_link_sharing_policy_SHARED)
 143     policy_initial_link = SURF_LINK_SHARED;
 144   else if (A_surfxml_link_sharing_policy ==
 145            A_surfxml_link_sharing_policy_FATPIPE)
 146     policy_initial_link = SURF_LINK_FATPIPE;
 147
 148   surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
 149
 150   link_new(name_link, bw_initial, bw_trace,
 151                    lat_initial, lat_trace, state_initial_link, state_trace,
 152                    policy_initial_link, xbt_dict_new());
 153
 154 }
 155
 156 static int src_id = -1;
 157 static int dst_id = -1;
 158
 159 static void parse_route_set_endpoints(void)
 160 {
 161   src_id = network_card_new(A_surfxml_route_src);
 162   dst_id = network_card_new(A_surfxml_route_dst);
 163   route_action = A_surfxml_route_action;
 164 }
 165
 166 static void parse_route_set_route(void)
 167 {
 168   char *name;
 169   if (src_id != -1 && dst_id != -1) {
 170     name = bprintf("%x#%x",src_id, dst_id);
 171     manage_route(route_table, name, route_action, 0);
 172     free(name);
 173   }
 174 }
 175
 176 static void add_loopback(void)
 177 {
 178   int i;
 179   /* Adding loopback if needed */
 180   for (i = 0; i < host_number; i++)
 181     if (!ROUTE_SIZE(i, i)) {
 182       if (!loopback)
 183         loopback = link_new(xbt_strdup("__MSG_loopback__"),
 184                                     498000000, NULL, 0.000015, NULL,
 185                                     SURF_LINK_ON, NULL,
 186                                     SURF_LINK_FATPIPE,NULL);
 187       ROUTE_SIZE(i, i) = 1;
 188       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 189       ROUTE(i, i)[0] = loopback;
 190     }
 191 }
 192
 193 static void add_route(void)
 194 {
 195   xbt_ex_t e;
 196   int nb_link = 0;
 197   unsigned int cpt = 0;
 198   int link_list_capacity = 0;
 199   link_CM02_t *link_list = NULL;
 200   xbt_dict_cursor_t cursor = NULL;
 201   char *key,*data, *end;
 202   const char *sep = "#";
 203   xbt_dynar_t links, keys;
 204
 205   if (routing_table == NULL) create_routing_table();
 206
 207   xbt_dict_foreach(route_table, cursor, key, data) {
 208           char* link = NULL;
 209     nb_link = 0;
 210     links = (xbt_dynar_t)data;
 211     keys = xbt_str_split_str(key, sep);
 212
 213     link_list_capacity = xbt_dynar_length(links);
 214     link_list = xbt_new(link_CM02_t, link_list_capacity);
 215
 216     src_id = strtol(xbt_dynar_get_as(keys, 0, char*), &end, 16);
 217     dst_id = strtol(xbt_dynar_get_as(keys, 1, char*), &end, 16);
 218     xbt_dynar_free(&keys);
 219
 220     xbt_dynar_foreach (links, cpt, link) {
 221       TRY {
 222         link_list[nb_link++] = xbt_dict_get(link_set, link);
 223       }
 224       CATCH(e) {
 225         RETHROW1("Link %s not found (dict raised this exception: %s)", link);
 226       }
 227     }
 228     route_new(src_id, dst_id, link_list, nb_link);
 229    }
 230 }
 231
 232 static void count_hosts(void)
 233 {
 234    host_number++;
 235 }
 236
 237
 238 static void add_traces(void) {
 239    xbt_dict_cursor_t cursor=NULL;
 240    char *trace_name,*elm;
 241
 242    static int called = 0;
 243    if (called) return;
 244    called = 1;
 245
 246    /* connect all traces relative to network */
 247    xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 248       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 249       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 250
 251       xbt_assert1(link, "Link %s undefined", elm);
 252       xbt_assert1(trace, "Trace %s undefined", trace_name);
 253
 254       link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 255    }
 256
 257    xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 258       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 259       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 260
 261       xbt_assert1(link, "Link %s undefined", elm);
 262       xbt_assert1(trace, "Trace %s undefined", trace_name);
 263
 264       link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 265    }
 266
 267    xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 268       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 269       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 270
 271       xbt_assert1(link, "Link %s undefined", elm);
 272       xbt_assert1(trace, "Trace %s undefined", trace_name);
 273
 274       link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 275    }
 276 }
 277
 278 static void define_callbacks(const char *file)
 279 {
 280   /* Figuring out the network links */
 281   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 282   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 283   surfxml_add_callback(STag_surfxml_prop_cb_list, &parse_properties);
 284   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 285   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 286   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 287   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 288   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 289   surfxml_add_callback(STag_surfxml_set_cb_list, &parse_sets);
 290   surfxml_add_callback(STag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_endpoints);
 291   surfxml_add_callback(ETag_surfxml_route_c_multi_cb_list, &parse_route_multi_set_route);
 292   surfxml_add_callback(STag_surfxml_foreach_cb_list, &parse_foreach);
 293   surfxml_add_callback(STag_surfxml_cluster_cb_list, &parse_cluster);
 294   surfxml_add_callback(STag_surfxml_trace_cb_list, &parse_trace_init);
 295   surfxml_add_callback(ETag_surfxml_trace_cb_list, &parse_trace_finalize);
 296   surfxml_add_callback(STag_surfxml_trace_c_connect_cb_list, &parse_trace_c_connect);
 297 }
 298
 299 static void *name_service(const char *name)
 300 {
 301   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 302   return card;
 303 }
 304
 305 static const char *get_resource_name(void *resource_id)
 306 {
 307   return ((network_card_CM02_t) resource_id)->name;
 308 }
 309
 310 static int resource_used(void *resource_id)
 311 {
 312   return lmm_constraint_used(network_maxmin_system,
 313                              ((link_CM02_t) resource_id)->
 314                              constraint);
 315 }
 316
 317 static int action_free(surf_action_t action)
 318 {
 319   action->using--;
 320   if (!action->using) {
 321     xbt_swag_remove(action, action->state_set);
 322     if (((surf_action_network_CM02_t) action)->variable)
 323       lmm_variable_free(network_maxmin_system,
 324                         ((surf_action_network_CM02_t) action)->variable);
 325     free(action);
 326     return 1;
 327   }
 328   return 0;
 329 }
 330
 331 static void action_use(surf_action_t action)
 332 {
 333   action->using++;
 334 }
 335
 336 static void action_cancel(surf_action_t action)
 337 {
 338   return;
 339 }
 340
 341 static void action_recycle(surf_action_t action)
 342 {
 343   return;
 344 }
 345
 346 static void action_change_state(surf_action_t action,
 347                                 e_surf_action_state_t state)
 348 {
 349 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 350 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 351 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 352 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 353 /*     } */
 354
 355   surf_action_change_state(action, state);
 356   return;
 357 }
 358
 359 static double share_resources(double now)
 360 {
 361   s_surf_action_network_CM02_t s_action;
 362   surf_action_network_CM02_t action = NULL;
 363   xbt_swag_t running_actions =
 364       surf_network_model->common_public->states.running_action_set;
 365   double min;
 366
 367   min = generic_maxmin_share_resources(running_actions,
 368                                        xbt_swag_offset(s_action,
 369                                                        variable),
 370                                        network_maxmin_system,
 371                                        network_solve);
 372
 373 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 374
 375   xbt_swag_foreach(action, running_actions) {
 376     if (action->latency > 0) {
 377       if (min < 0)
 378         min = action->latency;
 379       else if (action->latency < min)
 380         min = action->latency;
 381     }
 382   }
 383
 384   return min;
 385 }
 386
 387 static void update_actions_state(double now, double delta)
 388 {
 389   double deltap = 0.0;
 390   surf_action_network_CM02_t action = NULL;
 391   surf_action_network_CM02_t next_action = NULL;
 392   xbt_swag_t running_actions =
 393       surf_network_model->common_public->states.running_action_set;
 394   /*
 395      xbt_swag_t failed_actions =
 396      surf_network_model->common_public->states.failed_action_set;
 397    */
 398
 399   xbt_swag_foreach_safe(action, next_action, running_actions) {
 400     deltap = delta;
 401     if (action->latency > 0) {
 402       if (action->latency > deltap) {
 403         double_update(&(action->latency), deltap);
 404         deltap = 0.0;
 405       } else {
 406         double_update(&(deltap), action->latency);
 407         action->latency = 0.0;
 408       }
 409       if ((action->latency == 0.0) && !(action->suspended))
 410         lmm_update_variable_weight(network_maxmin_system, action->variable,
 411                                    action->lat_current);
 412     }
 413     double_update(&(action->generic_action.remains),
 414                   lmm_variable_getvalue(action->variable) * deltap);
 415     if (action->generic_action.max_duration != NO_MAX_DURATION)
 416       double_update(&(action->generic_action.max_duration), delta);
 417
 418     if ((action->generic_action.remains <= 0) &&
 419         (lmm_get_variable_weight(action->variable) > 0)) {
 420       action->generic_action.finish = surf_get_clock();
 421       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 422     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 423                (action->generic_action.max_duration <= 0)) {
 424       action->generic_action.finish = surf_get_clock();
 425       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 426     }
 427   }
 428
 429   return;
 430 }
 431
 432 static void update_resource_state(void *id,
 433                                   tmgr_trace_event_t event_type,
 434                                   double value, double date)
 435 {
 436   link_CM02_t nw_link = id;
 437   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 438   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 439   /*     value, event_type); */
 440
 441   if (event_type == nw_link->bw_event) {
 442     nw_link->bw_current = value;
 443     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 444                                 nw_link->bw_current);
 445   } else if (event_type == nw_link->lat_event) {
 446     double delta = value - nw_link->lat_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->lat_current = value;
 452     while ((var= lmm_get_var_from_cnst
 453            (network_maxmin_system, nw_link->constraint, &elem))) {
 454       action = lmm_variable_id(var);
 455       action->lat_current += delta;
 456       if (action->rate < 0)
 457         lmm_update_variable_bound(network_maxmin_system, action->variable,
 458                                   SG_TCP_CTE_GAMMA / (2.0 *
 459                                                       action->
 460                                                       lat_current));
 461       else
 462         lmm_update_variable_bound(network_maxmin_system, action->variable,
 463                                   min(action->rate,
 464                                       SG_TCP_CTE_GAMMA / (2.0 *
 465                                                           action->
 466                                                           lat_current)));
 467       if (!(action->suspended))
 468         lmm_update_variable_weight(network_maxmin_system, action->variable,
 469                                    action->lat_current);
 470       lmm_update_variable_latency(network_maxmin_system, action->variable,
 471                                   delta);
 472     }
 473   } else if (event_type == nw_link->state_event) {
 474     if (value > 0)
 475       nw_link->state_current = SURF_LINK_ON;
 476     else {
 477       lmm_constraint_t cnst = nw_link->constraint;
 478       lmm_variable_t var = NULL;
 479       lmm_element_t elem = NULL;
 480
 481       nw_link->state_current = SURF_LINK_OFF;
 482       while ((var= lmm_get_var_from_cnst
 483               (network_maxmin_system, cnst, &elem))) {
 484         surf_action_t action = lmm_variable_id(var) ;
 485
 486         if(surf_action_get_state(action)==SURF_ACTION_RUNNING ||
 487            surf_action_get_state(action)==SURF_ACTION_READY) {
 488           action->finish = date;
 489           action_change_state( action, SURF_ACTION_FAILED);
 490         }
 491       }
 492     }
 493   } else {
 494     CRITICAL0("Unknown event ! \n");
 495     xbt_abort();
 496   }
 497
 498   return;
 499 }
 500
 501 static surf_action_t communicate(void *src, void *dst, double size,
 502                                  double rate)
 503 {
 504   surf_action_network_CM02_t action = NULL;
 505   /* LARGE PLATFORMS HACK:
 506      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 507      Use the cluster_id for ->id */
 508   network_card_CM02_t card_src = src;
 509   network_card_CM02_t card_dst = dst;
 510   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 511   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 512   /* LARGE PLATFORMS HACK:
 513      total_route_size = route_size + src->link_nb + dst->nb */
 514   int i;
 515
 516   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 517   /* LARGE PLATFORMS HACK:
 518      assert on total_route_size */
 519   xbt_assert2(route_size,
 520               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 521               card_src->name, card_dst->name);
 522
 523   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 524
 525   action->generic_action.using = 1;
 526   action->generic_action.cost = size;
 527   action->generic_action.remains = size;
 528   action->generic_action.max_duration = NO_MAX_DURATION;
 529   action->generic_action.start = surf_get_clock();
 530   action->generic_action.finish = -1.0;
 531   action->generic_action.model_type =
 532       (surf_model_t) surf_network_model;
 533   action->suspended = 0;        /* Should be useless because of the
 534                                    calloc but it seems to help valgrind... */
 535   action->generic_action.state_set =
 536       surf_network_model->common_public->states.running_action_set;
 537   for (i = 0; i < route_size; i++)
 538     if(route[i]->state_current == SURF_LINK_OFF) {
 539       action->generic_action.state_set =
 540         surf_network_model->common_public->states.failed_action_set;
 541       break;
 542     }
 543
 544   xbt_swag_insert(action, action->generic_action.state_set);
 545   action->rate = rate;
 546
 547   action->latency = 0.0;
 548   for (i = 0; i < route_size; i++)
 549     action->latency += route[i]->lat_current;
 550   /* LARGE PLATFORMS HACK:
 551      Add src->link and dst->link latencies */
 552   action->lat_current = action->latency;
 553
 554   /* LARGE PLATFORMS HACK:
 555      lmm_variable_new(..., total_route_size)*/
 556   if (action->latency > 0)
 557     action->variable =
 558         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 559                          route_size);
 560   else
 561     action->variable =
 562         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 563                          route_size);
 564
 565   if (action->rate < 0) {
 566     if (action->lat_current > 0)
 567       lmm_update_variable_bound(network_maxmin_system, action->variable,
 568                                 SG_TCP_CTE_GAMMA / (2.0 *
 569                                                     action->lat_current));
 570     else
 571       lmm_update_variable_bound(network_maxmin_system, action->variable,
 572                                 -1.0);
 573   } else {
 574     if (action->lat_current > 0)
 575       lmm_update_variable_bound(network_maxmin_system, action->variable,
 576                                 min(action->rate,
 577                                     SG_TCP_CTE_GAMMA / (2.0 *
 578                                                         action->
 579                                                         lat_current)));
 580     else
 581       lmm_update_variable_bound(network_maxmin_system, action->variable,
 582                                 action->rate);
 583   }
 584   lmm_update_variable_latency(network_maxmin_system, action->variable,
 585                               action->latency);
 586
 587   for (i = 0; i < route_size; i++)
 588     lmm_expand(network_maxmin_system, route[i]->constraint,
 589                action->variable, 1.0);
 590   /* LARGE PLATFORMS HACK:
 591      expand also with src->link and dst->link */
 592
 593   XBT_OUT;
 594
 595   return (surf_action_t) action;
 596 }
 597
 598 /* returns an array of link_CM02_t */
 599 static const void **get_route(void *src, void *dst)
 600 {
 601   network_card_CM02_t card_src = src;
 602   network_card_CM02_t card_dst = dst;
 603   return (const void **) ROUTE(card_src->id, card_dst->id);
 604 }
 605
 606 static int get_route_size(void *src, void *dst)
 607 {
 608   network_card_CM02_t card_src = src;
 609   network_card_CM02_t card_dst = dst;
 610   return ROUTE_SIZE(card_src->id, card_dst->id);
 611 }
 612
 613 static const char *get_link_name(const void *link)
 614 {
 615   return ((link_CM02_t) link)->name;
 616 }
 617
 618 static double get_link_bandwidth(const void *link)
 619 {
 620   return ((link_CM02_t) link)->bw_current;
 621 }
 622
 623 static double get_link_latency(const void *link)
 624 {
 625   return ((link_CM02_t) link)->lat_current;
 626 }
 627
 628 static xbt_dict_t get_properties(void *link)
 629 {
 630  return ((link_CM02_t) link)->properties;
 631 }
 632
 633 static void action_suspend(surf_action_t action)
 634 {
 635   ((surf_action_network_CM02_t) action)->suspended = 1;
 636   lmm_update_variable_weight(network_maxmin_system,
 637                              ((surf_action_network_CM02_t) action)->
 638                              variable, 0.0);
 639 }
 640
 641 static void action_resume(surf_action_t action)
 642 {
 643   if (((surf_action_network_CM02_t) action)->suspended) {
 644     lmm_update_variable_weight(network_maxmin_system,
 645                                ((surf_action_network_CM02_t) action)->
 646                                variable,
 647                                ((surf_action_network_CM02_t) action)->
 648                                lat_current);
 649     ((surf_action_network_CM02_t) action)->suspended = 0;
 650   }
 651 }
 652
 653 static int action_is_suspended(surf_action_t action)
 654 {
 655   return ((surf_action_network_CM02_t) action)->suspended;
 656 }
 657
 658 static void action_set_max_duration(surf_action_t action, double duration)
 659 {
 660   action->max_duration = duration;
 661 }
 662
 663 static void finalize(void)
 664 {
 665   int i, j;
 666
 667   xbt_dict_free(&network_card_set);
 668   xbt_dict_free(&link_set);
 669   xbt_swag_free(surf_network_model->common_public->states.
 670                 ready_action_set);
 671   xbt_swag_free(surf_network_model->common_public->states.
 672                 running_action_set);
 673   xbt_swag_free(surf_network_model->common_public->states.
 674                 failed_action_set);
 675   xbt_swag_free(surf_network_model->common_public->states.
 676                 done_action_set);
 677   free(surf_network_model->common_public);
 678   free(surf_network_model->common_private);
 679   free(surf_network_model->extension_public);
 680
 681   free(surf_network_model);
 682   surf_network_model = NULL;
 683
 684   loopback = NULL;
 685   for (i = 0; i < host_number; i++)
 686     for (j = 0; j < host_number; j++)
 687       free(ROUTE(i, j));
 688   free(routing_table);
 689   routing_table = NULL;
 690   free(routing_table_size);
 691   routing_table_size = NULL;
 692   host_number = 0;
 693   lmm_system_free(network_maxmin_system);
 694   network_maxmin_system = NULL;
 695 }
 696
 697 static void surf_network_model_init_internal(void)
 698 {
 699   s_surf_action_t action;
 700
 701   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 702
 703   surf_network_model->common_private =
 704       xbt_new0(s_surf_model_private_t, 1);
 705   surf_network_model->common_public =
 706       xbt_new0(s_surf_model_public_t, 1);
 707   surf_network_model->extension_public =
 708       xbt_new0(s_surf_network_model_extension_public_t, 1);
 709
 710   surf_network_model->common_public->states.ready_action_set =
 711       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 712   surf_network_model->common_public->states.running_action_set =
 713       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 714   surf_network_model->common_public->states.failed_action_set =
 715       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 716   surf_network_model->common_public->states.done_action_set =
 717       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 718
 719   surf_network_model->common_public->name_service = name_service;
 720   surf_network_model->common_public->get_resource_name =
 721       get_resource_name;
 722   surf_network_model->common_public->action_get_state =
 723       surf_action_get_state;
 724   surf_network_model->common_public->action_get_start_time =
 725       surf_action_get_start_time;
 726   surf_network_model->common_public->action_get_finish_time =
 727       surf_action_get_finish_time;
 728   surf_network_model->common_public->action_free = action_free;
 729   surf_network_model->common_public->action_use = action_use;
 730   surf_network_model->common_public->action_cancel = action_cancel;
 731   surf_network_model->common_public->action_recycle = action_recycle;
 732   surf_network_model->common_public->action_change_state =
 733       action_change_state;
 734   surf_network_model->common_public->action_set_data =
 735       surf_action_set_data;
 736   surf_network_model->common_public->name = "network";
 737
 738   surf_network_model->common_private->resource_used = resource_used;
 739   surf_network_model->common_private->share_resources = share_resources;
 740   surf_network_model->common_private->update_actions_state =
 741       update_actions_state;
 742   surf_network_model->common_private->update_resource_state =
 743       update_resource_state;
 744   surf_network_model->common_private->finalize = finalize;
 745
 746   surf_network_model->common_public->suspend = action_suspend;
 747   surf_network_model->common_public->resume = action_resume;
 748   surf_network_model->common_public->is_suspended = action_is_suspended;
 749   surf_cpu_model->common_public->set_max_duration =
 750       action_set_max_duration;
 751
 752   surf_network_model->extension_public->communicate = communicate;
 753   surf_network_model->extension_public->get_route = get_route;
 754   surf_network_model->extension_public->get_route_size = get_route_size;
 755   surf_network_model->extension_public->get_link_name = get_link_name;
 756   surf_network_model->extension_public->get_link_bandwidth =
 757       get_link_bandwidth;
 758   surf_network_model->extension_public->get_link_latency =
 759       get_link_latency;
 760
 761   surf_network_model->common_public->get_properties =  get_properties;
 762
 763   link_set = xbt_dict_new();
 764   network_card_set = xbt_dict_new();
 765
 766   if (!network_maxmin_system)
 767     network_maxmin_system = lmm_system_new();
 768 }
 769
 770 /***************************************************************************/
 771 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 772 /***************************************************************************/
 773 /* @TechReport{      rr-lip2002-40, */
 774 /*   author        = {Henri Casanova and Loris Marchal}, */
 775 /*   institution   = {LIP}, */
 776 /*   title         = {A Network Model for Simulation of Grid Application}, */
 777 /*   number        = {2002-40}, */
 778 /*   month         = {oct}, */
 779 /*   year          = {2002} */
 780 /* } */
 781 void surf_network_model_init_CM02(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   update_model_description(surf_network_model_description,
 792                            "CM02",
 793                            (surf_model_t) surf_network_model);
 794 }
 795
 796 void surf_network_model_init_Reno(const char *filename)
 797 {
 798   if (surf_network_model)
 799     return;
 800   surf_network_model_init_internal();
 801   define_callbacks(filename);
 802
 803   xbt_dynar_push(model_list, &surf_network_model);
 804   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 805                                     func_reno_fpi);
 806   network_solve = lagrange_solve;
 807
 808   update_model_description(surf_network_model_description,
 809                            "Reno",
 810                            (surf_model_t) surf_network_model);
 811 }
 812
 813
 814 void surf_network_model_init_Reno2(const char *filename)
 815 {
 816   if (surf_network_model)
 817     return;
 818   surf_network_model_init_internal();
 819   define_callbacks(filename);
 820
 821   xbt_dynar_push(model_list, &surf_network_model);
 822   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 823                                     func_reno2_fpi);
 824   network_solve = lagrange_solve;
 825
 826   update_model_description(surf_network_model_description,
 827                            "Reno2",
 828                            (surf_model_t) surf_network_model);
 829 }
 830
 831 void surf_network_model_init_Vegas(const char *filename)
 832 {
 833   if (surf_network_model)
 834     return;
 835   surf_network_model_init_internal();
 836   define_callbacks(filename);
 837
 838   xbt_dynar_push(model_list, &surf_network_model);
 839   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 840                                     func_vegas_fpi);
 841   network_solve = lagrange_solve;
 842
 843   update_model_description(surf_network_model_description,
 844                            "Vegas",
 845                            (surf_model_t) surf_network_model);
 846 }
 847
 848 #ifdef HAVE_SDP
 849 void surf_network_model_init_SDP(const char *filename)
 850 {
 851   if (surf_network_model)
 852     return;
 853   surf_network_model_init_internal();
 854   define_callbacks(filename);
 855
 856   xbt_dynar_push(model_list, &surf_network_model);
 857   network_solve = sdp_solve;
 858
 859   update_model_description(surf_network_model_description,
 860                            "SDP",
 861                            (surf_model_t) surf_network_model);
 862 }
 863 #endif
 864
 865 #ifdef HAVE_GTNETS
 866 void surf_network_model_init_GTNETS(const char *filename)
 867 {
 868   if (surf_network_model)
 869     return;
 870   surf_network_model_init_internal();
 871   define_callbacks(filename);
 872   xbt_dynar_push(model_list, &surf_network_model);
 873
 874   update_model_description(surf_network_model_description,
 875                            "GTNets",
 876                            (surf_model_t) surf_network_model);
 877 }
 878 #endif