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 =
  34       xbt_new0(link_CM02_t *, /*card_number * card_number */ host_number * host_number);
  35   routing_table_size = xbt_new0(int, /*card_number * card_number*/ host_number * host_number);
  36 }
  37
  38 static void link_free(void *nw_link)
  39 {
  40   free(((link_CM02_t) nw_link)->name);
  41   xbt_dict_free(&(((link_CM02_t)nw_link)->properties));
  42   free(nw_link);
  43 }
  44
  45 static link_CM02_t link_new(char *name,
  46                             double bw_initial,
  47                             tmgr_trace_t bw_trace,
  48                             double lat_initial,
  49                             tmgr_trace_t lat_trace,
  50                             e_surf_link_state_t
  51                             state_initial,
  52                             tmgr_trace_t state_trace,
  53                             e_surf_link_sharing_policy_t
  54                             policy, xbt_dict_t properties)
  55 {
  56   link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
  57   xbt_assert1(!xbt_dict_get_or_null(link_set, name),
  58               "Link '%s' declared several times in the platform file.", name);
  59
  60   nw_link->model = (surf_model_t) surf_network_model;
  61   nw_link->name = name;
  62   nw_link->bw_current = bw_initial;
  63   if (bw_trace)
  64     nw_link->bw_event =
  65         tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
  66   nw_link->lat_current = lat_initial;
  67   if (lat_trace)
  68     nw_link->lat_event =
  69         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
  70   nw_link->state_current = state_initial;
  71   if (state_trace)
  72     nw_link->state_event =
  73         tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
  74
  75   nw_link->constraint =
  76       lmm_constraint_new(network_maxmin_system, nw_link,
  77                          bandwidth_factor*nw_link->bw_current);
  78
  79   if (policy == SURF_LINK_FATPIPE)
  80     lmm_constraint_shared(nw_link->constraint);
  81
  82   nw_link->properties = properties;
  83
  84   current_property_set = properties;
  85
  86   xbt_dict_set(link_set, name, nw_link, link_free);
  87
  88   return nw_link;
  89 }
  90
  91 static void network_card_free(void *nw_card)
  92 {
  93   free(((network_card_CM02_t) nw_card)->name);
  94   free(nw_card);
  95 }
  96
  97 static int network_card_new(const char *card_name)
  98 {
  99   network_card_CM02_t card =
 100       xbt_dict_get_or_null(network_card_set, card_name);
 101
 102   if (!card) {
 103     card = xbt_new0(s_network_card_CM02_t, 1);
 104     card->name = xbt_strdup(card_name);
 105     card->id = host_number++;
 106     xbt_dict_set(network_card_set, card_name, card, network_card_free);
 107   }
 108   return card->id;
 109 }
 110
 111 static void route_new(int src_id, int dst_id,
 112                       link_CM02_t * link_list, int nb_link)
 113 {
 114   ROUTE_SIZE(src_id, dst_id) = nb_link;
 115   ROUTE(src_id, dst_id) = link_list =
 116       xbt_realloc(link_list, sizeof(link_CM02_t) * nb_link);
 117 }
 118
 119 static void parse_link_init(void)
 120 {
 121   char *name_link;
 122   double bw_initial;
 123   tmgr_trace_t bw_trace;
 124   double lat_initial;
 125   tmgr_trace_t lat_trace;
 126   e_surf_link_state_t state_initial_link = SURF_LINK_ON;
 127   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 128   tmgr_trace_t state_trace;
 129
 130   name_link = xbt_strdup(A_surfxml_link_id);
 131   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 132   surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
 133   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 134   surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
 135
 136   xbt_assert0((A_surfxml_link_state ==
 137                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 ==
 143            A_surfxml_link_state_OFF)
 144     state_initial_link = SURF_LINK_OFF;
 145
 146   if (A_surfxml_link_sharing_policy ==
 147       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,
 191                                     SURF_LINK_FATPIPE,NULL);
 192       ROUTE_SIZE(i, i) = 1;
 193       ROUTE(i, i) = xbt_new0(link_CM02_t, 1);
 194       ROUTE(i, i)[0] = loopback;
 195     }
 196 }
 197
 198 static void add_route(void)
 199 {
 200   xbt_ex_t e;
 201   int nb_link = 0;
 202   unsigned int cpt = 0;
 203   int link_list_capacity = 0;
 204   link_CM02_t *link_list = NULL;
 205   xbt_dict_cursor_t cursor = NULL;
 206   char *key,*data, *end;
 207   const char *sep = "#";
 208   xbt_dynar_t links, keys;
 209
 210   if (routing_table == NULL) 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    xbt_dict_cursor_t cursor=NULL;
 245    char *trace_name,*elm;
 246
 247    static int called = 0;
 248    if (called) 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_assert1(link, "Link %s undefined", elm);
 257       xbt_assert1(trace, "Trace %s undefined", trace_name);
 258
 259       link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 260    }
 261
 262    xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 263       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 264       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 265
 266       xbt_assert1(link, "Link %s undefined", elm);
 267       xbt_assert1(trace, "Trace %s undefined", trace_name);
 268
 269       link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 270    }
 271
 272    xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 273       tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 274       link_CM02_t link = xbt_dict_get_or_null(link_set, elm);
 275
 276       xbt_assert1(link, "Link %s undefined", elm);
 277       xbt_assert1(trace, "Trace %s undefined", trace_name);
 278
 279       link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 280    }
 281 }
 282
 283 static void define_callbacks(const char *file)
 284 {
 285   /* Figuring out the network links */
 286   surfxml_add_callback(STag_surfxml_host_cb_list, &count_hosts);
 287   surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
 288   surfxml_add_callback(STag_surfxml_route_cb_list, &parse_route_set_endpoints);
 289   surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
 290   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
 291   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
 292   surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_loopback);
 293 }
 294
 295 static void *name_service(const char *name)
 296 {
 297   network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
 298   return card;
 299 }
 300
 301 static const char *get_resource_name(void *resource_id)
 302 {
 303   return ((network_card_CM02_t) resource_id)->name;
 304 }
 305
 306 static int resource_used(void *resource_id)
 307 {
 308   return lmm_constraint_used(network_maxmin_system,
 309                              ((link_CM02_t) resource_id)->
 310                              constraint);
 311 }
 312
 313 static int action_free(surf_action_t action)
 314 {
 315   action->refcount --;
 316   if (!action->refcount ) {
 317     xbt_swag_remove(action, action->state_set);
 318     if (((surf_action_network_CM02_t) action)->variable)
 319       lmm_variable_free(network_maxmin_system,
 320                         ((surf_action_network_CM02_t) action)->variable);
 321     free(action);
 322     return 1;
 323   }
 324   return 0;
 325 }
 326
 327 static void action_use(surf_action_t action)
 328 {
 329   action->refcount ++;
 330 }
 331
 332 static void action_cancel(surf_action_t action)
 333 {
 334   return;
 335 }
 336
 337 static void action_recycle(surf_action_t action)
 338 {
 339   return;
 340 }
 341
 342 static void action_change_state(surf_action_t action,
 343                                 e_surf_action_state_t state)
 344 {
 345 /*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
 346 /*     if(((surf_action_network_CM02_t)action)->variable) { */
 347 /*       lmm_variable_disable(network_maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
 348 /*       ((surf_action_network_CM02_t)action)->variable = NULL; */
 349 /*     } */
 350
 351   surf_action_change_state(action, state);
 352   return;
 353 }
 354
 355 static double share_resources(double now)
 356 {
 357   s_surf_action_network_CM02_t s_action;
 358   surf_action_network_CM02_t action = NULL;
 359   xbt_swag_t running_actions =
 360       surf_network_model->common_public->states.running_action_set;
 361   double min;
 362
 363   min = generic_maxmin_share_resources(running_actions,
 364                                        xbt_swag_offset(s_action,
 365                                                        variable),
 366                                        network_maxmin_system,
 367                                        network_solve);
 368
 369 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 370
 371   xbt_swag_foreach(action, running_actions) {
 372     if (action->latency > 0) {
 373       if (min < 0)
 374         min = action->latency;
 375       else if (action->latency < min)
 376         min = action->latency;
 377     }
 378   }
 379
 380   return min;
 381 }
 382
 383 static void update_actions_state(double now, double delta)
 384 {
 385   double deltap = 0.0;
 386   surf_action_network_CM02_t action = NULL;
 387   surf_action_network_CM02_t next_action = NULL;
 388   xbt_swag_t running_actions =
 389       surf_network_model->common_public->states.running_action_set;
 390   /*
 391      xbt_swag_t failed_actions =
 392      surf_network_model->common_public->states.failed_action_set;
 393    */
 394
 395   xbt_swag_foreach_safe(action, next_action, running_actions) {
 396     deltap = delta;
 397     if (action->latency > 0) {
 398       if (action->latency > deltap) {
 399         double_update(&(action->latency), deltap);
 400         deltap = 0.0;
 401       } else {
 402         double_update(&(deltap), action->latency);
 403         action->latency = 0.0;
 404       }
 405       if ((action->latency == 0.0) && !(action->suspended))
 406         lmm_update_variable_weight(network_maxmin_system, action->variable,
 407                                    action->weight);
 408     }
 409     double_update(&(action->generic_action.remains),
 410                   lmm_variable_getvalue(action->variable) * deltap);
 411     if (action->generic_action.max_duration != NO_MAX_DURATION)
 412       double_update(&(action->generic_action.max_duration), delta);
 413
 414     if ((action->generic_action.remains <= 0) &&
 415         (lmm_get_variable_weight(action->variable) > 0)) {
 416       action->generic_action.finish = surf_get_clock();
 417       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 418     } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
 419                (action->generic_action.max_duration <= 0)) {
 420       action->generic_action.finish = surf_get_clock();
 421       action_change_state((surf_action_t) action, SURF_ACTION_DONE);
 422     }
 423   }
 424
 425   return;
 426 }
 427
 428 static void update_resource_state(void *id,
 429                                   tmgr_trace_event_t event_type,
 430                                   double value, double date)
 431 {
 432   link_CM02_t nw_link = id;
 433   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 434   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 435   /*     value, event_type); */
 436
 437   if (event_type == nw_link->bw_event) {
 438     double delta = weight_S_parameter/value - weight_S_parameter/nw_link->bw_current;
 439     lmm_variable_t var = NULL;
 440     lmm_element_t elem = NULL;
 441     surf_action_network_CM02_t action = NULL;
 442
 443     nw_link->bw_current = value;
 444     lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
 445                                 bandwidth_factor*nw_link->bw_current);
 446     if(weight_S_parameter>0) {
 447       while ((var= lmm_get_var_from_cnst
 448               (network_maxmin_system, nw_link->constraint, &elem))) {
 449         action = lmm_variable_id(var);
 450         action->weight += delta;
 451         if (!(action->suspended))
 452           lmm_update_variable_weight(network_maxmin_system, action->variable,
 453                                      action->weight);
 454       }
 455     }
 456   } else if (event_type == nw_link->lat_event) {
 457     double delta = value - nw_link->lat_current;
 458     lmm_variable_t var = NULL;
 459     lmm_element_t elem = NULL;
 460     surf_action_network_CM02_t action = NULL;
 461
 462     nw_link->lat_current = value;
 463     while ((var= lmm_get_var_from_cnst
 464            (network_maxmin_system, nw_link->constraint, &elem))) {
 465       action = lmm_variable_id(var);
 466       action->lat_current += delta;
 467       action->weight += delta;
 468       if (action->rate < 0)
 469         lmm_update_variable_bound(network_maxmin_system, action->variable,
 470                                   SG_TCP_CTE_GAMMA / (2.0 *
 471                                                       action->
 472                                                       lat_current));
 473       else
 474         lmm_update_variable_bound(network_maxmin_system, action->variable,
 475                                   min(action->rate,
 476                                       SG_TCP_CTE_GAMMA / (2.0 *
 477                                                           action->
 478                                                           lat_current)));
 479       if (!(action->suspended))
 480         lmm_update_variable_weight(network_maxmin_system, action->variable,
 481                                    action->weight);
 482
 483     }
 484   } else if (event_type == nw_link->state_event) {
 485     if (value > 0)
 486       nw_link->state_current = SURF_LINK_ON;
 487     else {
 488       lmm_constraint_t cnst = nw_link->constraint;
 489       lmm_variable_t var = NULL;
 490       lmm_element_t elem = NULL;
 491
 492       nw_link->state_current = SURF_LINK_OFF;
 493       while ((var= lmm_get_var_from_cnst
 494               (network_maxmin_system, cnst, &elem))) {
 495         surf_action_t action = lmm_variable_id(var) ;
 496
 497         if(surf_action_get_state(action)==SURF_ACTION_RUNNING ||
 498            surf_action_get_state(action)==SURF_ACTION_READY) {
 499           action->finish = date;
 500           action_change_state( action, SURF_ACTION_FAILED);
 501         }
 502       }
 503     }
 504   } else {
 505     CRITICAL0("Unknown event ! \n");
 506     xbt_abort();
 507   }
 508
 509   return;
 510 }
 511
 512 static surf_action_t communicate(void *src, void *dst, double size,
 513                                  double rate)
 514 {
 515   surf_action_network_CM02_t action = NULL;
 516   /* LARGE PLATFORMS HACK:
 517      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 518      Use the cluster_id for ->id */
 519   network_card_CM02_t card_src = src;
 520   network_card_CM02_t card_dst = dst;
 521   int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
 522   link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
 523   /* LARGE PLATFORMS HACK:
 524      total_route_size = route_size + src->link_nb + dst->nb */
 525   int i;
 526
 527   XBT_IN4("(%s,%s,%g,%g)", card_src->name, card_dst->name, size, rate);
 528   /* LARGE PLATFORMS HACK:
 529      assert on total_route_size */
 530   xbt_assert2(route_size,
 531               "You're trying to send data from %s to %s but there is no connexion between these two cards.",
 532               card_src->name, card_dst->name);
 533
 534   action = xbt_new0(s_surf_action_network_CM02_t, 1);
 535
 536   action->generic_action.refcount  = 1;
 537   action->generic_action.cost = size;
 538   action->generic_action.remains = size;
 539   action->generic_action.max_duration = NO_MAX_DURATION;
 540   action->generic_action.start = surf_get_clock();
 541   action->generic_action.finish = -1.0;
 542   action->generic_action.model_type =
 543       (surf_model_t) surf_network_model;
 544   action->suspended = 0;        /* Should be useless because of the
 545                                    calloc but it seems to help valgrind... */
 546   action->generic_action.state_set =
 547       surf_network_model->common_public->states.running_action_set;
 548   for (i = 0; i < route_size; i++)
 549     if(route[i]->state_current == SURF_LINK_OFF) {
 550       action->generic_action.state_set =
 551         surf_network_model->common_public->states.failed_action_set;
 552       break;
 553     }
 554
 555   xbt_swag_insert(action, action->generic_action.state_set);
 556   action->rate = rate;
 557
 558   action->latency = 0.0;
 559   action->weight = 0.0;
 560   for (i = 0; i < route_size; i++) {
 561     action->latency += route[i]->lat_current;
 562     action->weight += route[i]->lat_current + weight_S_parameter/route[i]->bw_current;
 563   }
 564   /* LARGE PLATFORMS HACK:
 565      Add src->link and dst->link latencies */
 566   action->lat_current = action->latency;
 567   action->latency *= latency_factor;
 568
 569   /* LARGE PLATFORMS HACK:
 570      lmm_variable_new(..., total_route_size)*/
 571   if (action->latency > 0)
 572     action->variable =
 573         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 574                          route_size);
 575   else
 576     action->variable =
 577         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 578                          route_size);
 579
 580   if (action->rate < 0) {
 581     if (action->lat_current > 0)
 582       lmm_update_variable_bound(network_maxmin_system, action->variable,
 583                                 SG_TCP_CTE_GAMMA / (2.0 *
 584                                                     action->lat_current));
 585     else
 586       lmm_update_variable_bound(network_maxmin_system, action->variable,
 587                                 -1.0);
 588   } else {
 589     if (action->lat_current > 0)
 590       lmm_update_variable_bound(network_maxmin_system, action->variable,
 591                                 min(action->rate,
 592                                     SG_TCP_CTE_GAMMA / (2.0 *
 593                                                         action->
 594                                                         lat_current)));
 595     else
 596       lmm_update_variable_bound(network_maxmin_system, action->variable,
 597                                 action->rate);
 598   }
 599
 600   for (i = 0; i < route_size; i++)
 601     lmm_expand(network_maxmin_system, route[i]->constraint,
 602                action->variable, 1.0);
 603   /* LARGE PLATFORMS HACK:
 604      expand also with src->link and dst->link */
 605
 606   XBT_OUT;
 607
 608   return (surf_action_t) action;
 609 }
 610
 611 /* returns an array of link_CM02_t */
 612 static const void **get_route(void *src, void *dst)
 613 {
 614   network_card_CM02_t card_src = src;
 615   network_card_CM02_t card_dst = dst;
 616   return (const void **) ROUTE(card_src->id, card_dst->id);
 617 }
 618
 619 static int get_route_size(void *src, void *dst)
 620 {
 621   network_card_CM02_t card_src = src;
 622   network_card_CM02_t card_dst = dst;
 623   return ROUTE_SIZE(card_src->id, card_dst->id);
 624 }
 625
 626 static const char *get_link_name(const void *link)
 627 {
 628   return ((link_CM02_t) link)->name;
 629 }
 630
 631 static double get_link_bandwidth(const void *link)
 632 {
 633   return ((link_CM02_t) link)->bw_current;
 634 }
 635
 636 static double get_link_latency(const void *link)
 637 {
 638   return ((link_CM02_t) link)->lat_current;
 639 }
 640
 641 static int link_shared(const void *link)
 642 {
 643   return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
 644 }
 645
 646 static xbt_dict_t get_properties(void *link)
 647 {
 648  return ((link_CM02_t) link)->properties;
 649 }
 650
 651 static void action_suspend(surf_action_t action)
 652 {
 653   ((surf_action_network_CM02_t) action)->suspended = 1;
 654   lmm_update_variable_weight(network_maxmin_system,
 655                              ((surf_action_network_CM02_t) action)->
 656                              variable, 0.0);
 657 }
 658
 659 static void action_resume(surf_action_t action)
 660 {
 661   if (((surf_action_network_CM02_t) action)->suspended) {
 662     lmm_update_variable_weight(network_maxmin_system,
 663                                ((surf_action_network_CM02_t) action)->
 664                                variable,
 665                                ((surf_action_network_CM02_t) action)->
 666                                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.
 688                 ready_action_set);
 689   xbt_swag_free(surf_network_model->common_public->states.
 690                 running_action_set);
 691   xbt_swag_free(surf_network_model->common_public->states.
 692                 failed_action_set);
 693   xbt_swag_free(surf_network_model->common_public->states.
 694                 done_action_set);
 695   free(surf_network_model->common_public);
 696   free(surf_network_model->common_private);
 697   free(surf_network_model->extension_public);
 698
 699   free(surf_network_model);
 700   surf_network_model = NULL;
 701
 702   loopback = NULL;
 703   for (i = 0; i < host_number; i++)
 704     for (j = 0; j < host_number; j++)
 705       free(ROUTE(i, j));
 706   free(routing_table);
 707   routing_table = NULL;
 708   free(routing_table_size);
 709   routing_table_size = NULL;
 710   host_number = 0;
 711   lmm_system_free(network_maxmin_system);
 712   network_maxmin_system = NULL;
 713 }
 714
 715 static void surf_network_model_init_internal(void)
 716 {
 717   s_surf_action_t action;
 718
 719   surf_network_model = xbt_new0(s_surf_network_model_t, 1);
 720
 721   surf_network_model->common_private =
 722       xbt_new0(s_surf_model_private_t, 1);
 723   surf_network_model->common_public =
 724       xbt_new0(s_surf_model_public_t, 1);
 725   surf_network_model->extension_public =
 726       xbt_new0(s_surf_network_model_extension_public_t, 1);
 727
 728   surf_network_model->common_public->states.ready_action_set =
 729       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 730   surf_network_model->common_public->states.running_action_set =
 731       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 732   surf_network_model->common_public->states.failed_action_set =
 733       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 734   surf_network_model->common_public->states.done_action_set =
 735       xbt_swag_new(xbt_swag_offset(action, state_hookup));
 736
 737   surf_network_model->common_public->name_service = name_service;
 738   surf_network_model->common_public->get_resource_name =
 739       get_resource_name;
 740   surf_network_model->common_public->action_get_state =
 741       surf_action_get_state;
 742   surf_network_model->common_public->action_get_start_time =
 743       surf_action_get_start_time;
 744   surf_network_model->common_public->action_get_finish_time =
 745       surf_action_get_finish_time;
 746   surf_network_model->common_public->action_free = action_free;
 747   surf_network_model->common_public->action_use = action_use;
 748   surf_network_model->common_public->action_cancel = action_cancel;
 749   surf_network_model->common_public->action_recycle = action_recycle;
 750   surf_network_model->common_public->action_change_state =
 751       action_change_state;
 752   surf_network_model->common_public->action_set_data =
 753       surf_action_set_data;
 754   surf_network_model->common_public->name = "network";
 755
 756   surf_network_model->common_private->resource_used = resource_used;
 757   surf_network_model->common_private->share_resources = share_resources;
 758   surf_network_model->common_private->update_actions_state =
 759       update_actions_state;
 760   surf_network_model->common_private->update_resource_state =
 761       update_resource_state;
 762   surf_network_model->common_private->finalize = finalize;
 763
 764   surf_network_model->common_public->suspend = action_suspend;
 765   surf_network_model->common_public->resume = action_resume;
 766   surf_network_model->common_public->is_suspended = action_is_suspended;
 767   surf_cpu_model->common_public->set_max_duration =
 768       action_set_max_duration;
 769
 770   surf_network_model->extension_public->communicate = communicate;
 771   surf_network_model->extension_public->get_route = get_route;
 772   surf_network_model->extension_public->get_route_size = get_route_size;
 773   surf_network_model->extension_public->get_link_name = get_link_name;
 774   surf_network_model->extension_public->get_link_bandwidth =
 775       get_link_bandwidth;
 776   surf_network_model->extension_public->get_link_latency =
 777       get_link_latency;
 778   surf_network_model->extension_public->link_shared =
 779       link_shared;
 780
 781   surf_network_model->common_public->get_properties =  get_properties;
 782
 783   link_set = xbt_dict_new();
 784   network_card_set = xbt_dict_new();
 785
 786   if (!network_maxmin_system)
 787     network_maxmin_system = lmm_system_new();
 788 }
 789
 790 /************************************************************************/
 791 /* New model based on optimizations discussed during this thesis        */
 792 /************************************************************************/
 793 void surf_network_model_init_LegrandVelho(const char *filename)
 794 {
 795
 796   if (surf_network_model)
 797     return;
 798   surf_network_model_init_internal();
 799   define_callbacks(filename);
 800   xbt_dynar_push(model_list, &surf_network_model);
 801   network_solve = lmm_solve;
 802
 803   latency_factor = 10.4;
 804   bandwidth_factor = 0.92;
 805   weight_S_parameter = 8775;
 806
 807   update_model_description(surf_network_model_description,
 808                            "LegrandVelho",
 809                            (surf_model_t) surf_network_model);
 810 }
 811
 812 /***************************************************************************/
 813 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 814 /***************************************************************************/
 815 /* @TechReport{      rr-lip2002-40, */
 816 /*   author        = {Henri Casanova and Loris Marchal}, */
 817 /*   institution   = {LIP}, */
 818 /*   title         = {A Network Model for Simulation of Grid Application}, */
 819 /*   number        = {2002-40}, */
 820 /*   month         = {oct}, */
 821 /*   year          = {2002} */
 822 /* } */
 823 void surf_network_model_init_CM02(const char *filename)
 824 {
 825
 826   if (surf_network_model)
 827     return;
 828   surf_network_model_init_internal();
 829   define_callbacks(filename);
 830   xbt_dynar_push(model_list, &surf_network_model);
 831   network_solve = lmm_solve;
 832
 833   update_model_description(surf_network_model_description,
 834                            "CM02",
 835                            (surf_model_t) surf_network_model);
 836 }
 837
 838 void surf_network_model_init_Reno(const char *filename)
 839 {
 840   if (surf_network_model)
 841     return;
 842   surf_network_model_init_internal();
 843   define_callbacks(filename);
 844
 845   xbt_dynar_push(model_list, &surf_network_model);
 846   lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
 847                                     func_reno_fpi);
 848   network_solve = lagrange_solve;
 849
 850   update_model_description(surf_network_model_description,
 851                            "Reno",
 852                            (surf_model_t) surf_network_model);
 853 }
 854
 855
 856 void surf_network_model_init_Reno2(const char *filename)
 857 {
 858   if (surf_network_model)
 859     return;
 860   surf_network_model_init_internal();
 861   define_callbacks(filename);
 862
 863   xbt_dynar_push(model_list, &surf_network_model);
 864   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 865                                     func_reno2_fpi);
 866   network_solve = lagrange_solve;
 867
 868   update_model_description(surf_network_model_description,
 869                            "Reno2",
 870                            (surf_model_t) surf_network_model);
 871 }
 872
 873 void surf_network_model_init_Vegas(const char *filename)
 874 {
 875   if (surf_network_model)
 876     return;
 877   surf_network_model_init_internal();
 878   define_callbacks(filename);
 879
 880   xbt_dynar_push(model_list, &surf_network_model);
 881   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 882                                     func_vegas_fpi);
 883   network_solve = lagrange_solve;
 884
 885   update_model_description(surf_network_model_description,
 886                            "Vegas",
 887                            (surf_model_t) surf_network_model);
 888 }
 889
 890 #ifdef HAVE_SDP
 891  void surf_network_model_init_SDP(const char *filename)
 892 {
 893   if (surf_network_model)
 894     return;
 895   surf_network_model_init_internal();
 896   define_callbacks(filename);
 897
 898   xbt_dynar_push(model_list, &surf_network_model);
 899   network_solve = sdp_solve;
 900
 901   update_model_description(surf_network_model_description,
 902                            "SDP",
 903                            (surf_model_t) surf_network_model);
 904 }
 905 #endif