src/surf/surf_routing.c

   1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include <pcre.h>               /* regular expression library */
   8
   9 #include "simgrid/platf_interface.h"    // platform creation API internal interface
  10
  11 #include "surf_routing_private.h"
  12 #include "surf/surf_routing.h"
  13 #include "surf/surfxml_parse_values.h"
  14
  15 xbt_lib_t host_lib;
  16 int ROUTING_HOST_LEVEL;         //Routing level
  17 int SURF_CPU_LEVEL;             //Surf cpu level
  18 int SURF_WKS_LEVEL;             //Surf workstation level
  19 int SIMIX_HOST_LEVEL;           //Simix level
  20 int MSG_HOST_LEVEL;             //Msg level
  21 int SD_HOST_LEVEL;              //Simdag level
  22 int COORD_HOST_LEVEL;           //Coordinates level
  23 int NS3_HOST_LEVEL;             //host node for ns3
  24
  25 xbt_lib_t link_lib;
  26 int SD_LINK_LEVEL;              //Simdag level
  27 int SURF_LINK_LEVEL;            //Surf level
  28 int NS3_LINK_LEVEL;             //link for ns3
  29
  30 xbt_lib_t as_router_lib;
  31 int ROUTING_ASR_LEVEL;          //Routing level
  32 int COORD_ASR_LEVEL;            //Coordinates level
  33 int NS3_ASR_LEVEL;              //host node for ns3
  34
  35 static xbt_dict_t random_value = NULL;
  36
  37 /* Global vars */
  38 routing_global_t global_routing = NULL;
  39 AS_t current_routing = NULL;
  40
  41 /* global parse functions */
  42 xbt_dynar_t link_list = NULL;   /* temporary store of current list link of a route */
  43 static const char *src = NULL;  /* temporary store the source name of a route */
  44 static const char *dst = NULL;  /* temporary store the destination name of a route */
  45 static char *gw_src = NULL;     /* temporary store the gateway source name of a route */
  46 static char *gw_dst = NULL;     /* temporary store the gateway destination name of a route */
  47
  48 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  49
  50 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  51 static void routing_parse_Srandom(void);        /* random bypass */
  52
  53 static void routing_parse_postparse(void);
  54
  55 /* this lines are only for replace use like index in the model table */
  56 typedef enum {
  57   SURF_MODEL_FULL = 0,
  58   SURF_MODEL_FLOYD,
  59   SURF_MODEL_DIJKSTRA,
  60   SURF_MODEL_DIJKSTRACACHE,
  61   SURF_MODEL_NONE,
  62   SURF_MODEL_RULEBASED,
  63   SURF_MODEL_VIVALDI,
  64   SURF_MODEL_CLUSTER
  65 } e_routing_types;
  66
  67 struct s_model_type routing_models[] = {
  68   {"Full",
  69    "Full routing data (fast, large memory requirements, fully expressive)",
  70    model_full_create, model_full_end},
  71   {"Floyd",
  72    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  73    model_floyd_create, model_floyd_end},
  74   {"Dijkstra",
  75    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  76    model_dijkstra_create, model_dijkstra_both_end},
  77   {"DijkstraCache",
  78    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  79    model_dijkstracache_create, model_dijkstra_both_end},
  80   {"none", "No routing (usable with Constant network only)",
  81    model_none_create,  NULL},
  82   {"RuleBased", "Rule-Based routing data (...)",
  83    model_rulebased_create, NULL},
  84   {"Vivaldi", "Vivaldi routing",
  85    model_vivaldi_create, NULL},
  86   {"Cluster", "Cluster routing",
  87    model_cluster_create, NULL},
  88   {NULL, NULL, NULL, NULL}
  89 };
  90
  91 /**
  92  * \brief Add a "host" to the network element list
  93  */
  94 static void parse_S_host(sg_platf_host_cbarg_t host)
  95 {
  96   network_element_info_t info = NULL;
  97   if (current_routing->hierarchy == SURF_ROUTING_NULL)
  98     current_routing->hierarchy = SURF_ROUTING_BASE;
  99   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 100              "Reading a host, processing unit \"%s\" already exists", host->id);
 101
 102   current_routing->parse_PU(current_routing, host->id);
 103   info = xbt_new0(s_network_element_info_t, 1);
 104   info->rc_component = current_routing;
 105   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 106   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 107   if (host->coord && strcmp(host->coord, "")) {
 108     if (!COORD_HOST_LEVEL)
 109       xbt_die
 110           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 111     xbt_dynar_t ctn = xbt_str_split_str(host->coord, " ");
 112     xbt_dynar_shrink(ctn, 0);
 113     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 114   }
 115 }
 116
 117 /**
 118  * \brief Add a "router" to the network element list
 119  */
 120 static void parse_S_router(sg_platf_router_cbarg_t router)
 121 {
 122   network_element_info_t info = NULL;
 123   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 124     current_routing->hierarchy = SURF_ROUTING_BASE;
 125   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 126              "Reading a router, processing unit \"%s\" already exists",
 127              router->id);
 128
 129   current_routing->parse_PU(current_routing, router->id);
 130   info = xbt_new0(s_network_element_info_t, 1);
 131   info->rc_component = current_routing;
 132   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 133
 134   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 135   if (strcmp(router->coord, "")) {
 136     if (!COORD_ASR_LEVEL)
 137       xbt_die
 138           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 139     xbt_dynar_t ctn = xbt_str_split_str(router->coord, " ");
 140     xbt_dynar_shrink(ctn, 0);
 141     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 142   }
 143 }
 144
 145
 146 /**
 147  * \brief Set the end points for a route
 148  */
 149 static void routing_parse_S_route(void)
 150 {
 151   if (src != NULL && dst != NULL && link_list != NULL)
 152     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 153            A_surfxml_route_src, A_surfxml_route_dst);
 154   src = A_surfxml_route_src;
 155   dst = A_surfxml_route_dst;
 156   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
 157              "Some limits are null in the route between \"%s\" and \"%s\"",
 158              src, dst);
 159   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 160 }
 161
 162 /**
 163  * \brief Set the end points and gateways for a ASroute
 164  */
 165 static void routing_parse_S_ASroute(void)
 166 {
 167   if (src != NULL && dst != NULL && link_list != NULL)
 168     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 169            A_surfxml_ASroute_src, A_surfxml_ASroute_dst);
 170   src = A_surfxml_ASroute_src;
 171   dst = A_surfxml_ASroute_dst;
 172   gw_src = A_surfxml_ASroute_gw_src;
 173   gw_dst = A_surfxml_ASroute_gw_dst;
 174   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 175              || strlen(gw_dst) > 0,
 176              "Some limits are null in the route between \"%s\" and \"%s\"",
 177              src, dst);
 178   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 179 }
 180
 181 /**
 182  * \brief Set the end points for a bypassRoute
 183  */
 184 static void routing_parse_S_bypassRoute(void)
 185 {
 186   if (src != NULL && dst != NULL && link_list != NULL)
 187     THROWF(arg_error, 0,
 188            "Bypass Route between %s to %s can not be defined",
 189            A_surfxml_bypassRoute_src, A_surfxml_bypassRoute_dst);
 190   src = A_surfxml_bypassRoute_src;
 191   dst = A_surfxml_bypassRoute_dst;
 192   gw_src = A_surfxml_bypassRoute_gw_src;
 193   gw_dst = A_surfxml_bypassRoute_gw_dst;
 194   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 195              || strlen(gw_dst) > 0,
 196              "Some limits are null in the route between \"%s\" and \"%s\"",
 197              src, dst);
 198   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 199 }
 200
 201 /**
 202  * \brief Set a new link on the actual list of link for a route or ASroute from XML
 203  */
 204
 205 static void routing_parse_link_ctn(void)
 206 {
 207   char *link_id;
 208   switch (A_surfxml_link_ctn_direction) {
 209   case AU_surfxml_link_ctn_direction:
 210   case A_surfxml_link_ctn_direction_NONE:
 211     link_id = xbt_strdup(A_surfxml_link_ctn_id);
 212     break;
 213   case A_surfxml_link_ctn_direction_UP:
 214     link_id = bprintf("%s_UP", A_surfxml_link_ctn_id);
 215     break;
 216   case A_surfxml_link_ctn_direction_DOWN:
 217     link_id = bprintf("%s_DOWN", A_surfxml_link_ctn_id);
 218     break;
 219   }
 220   xbt_dynar_push(link_list, &link_id);
 221 }
 222
 223 /**
 224  * \brief Store the route by calling the set_route function of the current routing component
 225  */
 226 static void routing_parse_E_route(void)
 227 {
 228   route_extended_t route = xbt_new0(s_route_extended_t, 1);
 229   route->generic_route.link_list = link_list;
 230   xbt_assert(current_routing->parse_route,
 231              "no defined method \"set_route\" in \"%s\"",
 232              current_routing->name);
 233   current_routing->parse_route(current_routing, src, dst, route);
 234   link_list = NULL;
 235   src = NULL;
 236   dst = NULL;
 237 }
 238
 239 /**
 240  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 241  */
 242 static void routing_parse_E_ASroute(void)
 243 {
 244   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 245   e_route->generic_route.link_list = link_list;
 246   e_route->src_gateway = xbt_strdup(gw_src);
 247   e_route->dst_gateway = xbt_strdup(gw_dst);
 248   xbt_assert(current_routing->parse_ASroute,
 249              "no defined method \"set_ASroute\" in \"%s\"",
 250              current_routing->name);
 251   current_routing->parse_ASroute(current_routing, src, dst, e_route);
 252   link_list = NULL;
 253   src = NULL;
 254   dst = NULL;
 255   gw_src = NULL;
 256   gw_dst = NULL;
 257 }
 258
 259 /**
 260  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 261  */
 262 static void routing_parse_E_bypassRoute(void)
 263 {
 264   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 265   e_route->generic_route.link_list = link_list;
 266   e_route->src_gateway = xbt_strdup(gw_src);
 267   e_route->dst_gateway = xbt_strdup(gw_dst);
 268   xbt_assert(current_routing->parse_bypassroute,
 269              "Bypassing mechanism not implemented by routing '%s'",
 270              current_routing->name);
 271   current_routing->parse_bypassroute(current_routing, src, dst, e_route);
 272   link_list = NULL;
 273   src = NULL;
 274   dst = NULL;
 275   gw_src = NULL;
 276   gw_dst = NULL;
 277 }
 278
 279 /**
 280  * \brief Make a new routing component to the platform
 281  *
 282  * Add a new autonomous system to the platform. Any elements (such as host,
 283  * router or sub-AS) added after this call and before the corresponding call
 284  * to sg_platf_new_AS_close() will be added to this AS.
 285  *
 286  * Once this function was called, the configuration concerning the used
 287  * models cannot be changed anymore.
 288  *
 289  * @param AS_id name of this autonomous system. Must be unique in the platform
 290  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 291  */
 292 void routing_AS_begin(const char *AS_id, const char *wanted_routing_type)
 293 {
 294   AS_t new_as;
 295   routing_model_description_t model = NULL;
 296   int cpt;
 297
 298   /* search the routing model */
 299   for (cpt = 0; routing_models[cpt].name; cpt++)
 300     if (!strcmp(wanted_routing_type, routing_models[cpt].name))
 301       model = &routing_models[cpt];
 302   /* if its not exist, error */
 303   if (model == NULL) {
 304     fprintf(stderr, "Routing model %s not found. Existing models:\n",
 305             wanted_routing_type);
 306     for (cpt = 0; routing_models[cpt].name; cpt++)
 307       fprintf(stderr, "   %s: %s\n", routing_models[cpt].name,
 308               routing_models[cpt].desc);
 309     xbt_die(NULL);
 310   }
 311
 312   /* make a new routing component */
 313   new_as = (AS_t) model->create();
 314   new_as->model_desc = model;
 315   new_as->hierarchy = SURF_ROUTING_NULL;
 316   new_as->name = xbt_strdup(AS_id);
 317
 318   if (current_routing == NULL && global_routing->root == NULL) {
 319
 320     /* it is the first one */
 321     new_as->routing_father = NULL;
 322     global_routing->root = new_as;
 323
 324   } else if (current_routing != NULL && global_routing->root != NULL) {
 325
 326     xbt_assert(!xbt_dict_get_or_null
 327                (current_routing->routing_sons, AS_id),
 328                "The AS \"%s\" already exists", AS_id);
 329     /* it is a part of the tree */
 330     new_as->routing_father = current_routing;
 331     /* set the father behavior */
 332     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 333       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 334     /* add to the sons dictionary */
 335     xbt_dict_set(current_routing->routing_sons, AS_id,
 336                  (void *) new_as, NULL);
 337     /* add to the father element list */
 338     current_routing->parse_AS(current_routing, AS_id);
 339   } else {
 340     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 341   }
 342   /* set the new current component of the tree */
 343   current_routing = new_as;
 344 }
 345
 346 /**
 347  * \brief Specify that the current description of AS is finished
 348  *
 349  * Once you've declared all the content of your AS, you have to close
 350  * it with this call. Your AS is not usable until you call this function.
 351  *
 352  * @fixme: this call is not as robust as wanted: bad things WILL happen
 353  * if you call it twice for the same AS, or if you forget calling it, or
 354  * even if you add stuff to a closed AS
 355  *
 356  */
 357 void routing_AS_end()
 358 {
 359
 360   if (current_routing == NULL) {
 361     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 362   } else {
 363     network_element_info_t info = NULL;
 364     xbt_assert(!xbt_lib_get_or_null
 365                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
 366                "The AS \"%s\" already exists", current_routing->name);
 367     info = xbt_new0(s_network_element_info_t, 1);
 368     info->rc_component = current_routing->routing_father;
 369     info->rc_type = SURF_NETWORK_ELEMENT_AS;
 370     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
 371                 (void *) info);
 372
 373     if (current_routing->model_desc->end)
 374       current_routing->model_desc->end(current_routing);
 375     current_routing = current_routing->routing_father;
 376   }
 377 }
 378
 379 /* Aux Business methods */
 380
 381 /**
 382  * \brief Get the AS father and the first elements of the chain
 383  *
 384  * \param src the source host name
 385  * \param dst the destination host name
 386  *
 387  * Get the common father of the to processing units, and the first different
 388  * father in the chain
 389  */
 390 static void elements_father(const char *src, const char *dst,
 391                             AS_t * res_father,
 392                             AS_t * res_src,
 393                             AS_t * res_dst)
 394 {
 395   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 396 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 397   AS_t src_as, dst_as;
 398   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 399   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 400   int index_src = 0;
 401   int index_dst = 0;
 402   AS_t current;
 403   AS_t current_src;
 404   AS_t current_dst;
 405   AS_t father;
 406
 407   /* (1) find the as where the src and dst are located */
 408   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
 409                                                         ROUTING_HOST_LEVEL);
 410   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
 411                                                         ROUTING_HOST_LEVEL);
 412   if (!src_data)
 413     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 414   if (!dst_data)
 415     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 416   src_as = src_data->rc_component;
 417   dst_as = dst_data->rc_component;
 418
 419   xbt_assert(src_as && dst_as,
 420              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
 421
 422   /* (2) find the path to the root routing component */
 423   for (current = src_as; current != NULL; current = current->routing_father) {
 424     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 425       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 426     path_src[index_src++] = current;
 427   }
 428   for (current = dst_as; current != NULL; current = current->routing_father) {
 429     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 430       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 431     path_dst[index_dst++] = current;
 432   }
 433
 434   /* (3) find the common father */
 435   do {
 436     current_src = path_src[--index_src];
 437     current_dst = path_dst[--index_dst];
 438   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 439
 440   /* (4) they are not in the same routing component, make the path */
 441   if (current_src == current_dst)
 442     father = current_src;
 443   else
 444     father = path_src[index_src + 1];
 445
 446   /* (5) result generation */
 447   *res_father = father;         /* first the common father of src and dst */
 448   *res_src = current_src;       /* second the first different father of src */
 449   *res_dst = current_dst;       /* three  the first different father of dst */
 450
 451 #undef ELEMENTS_FATHER_MAXDEPTH
 452 }
 453
 454 /* Global Business methods */
 455
 456 /**
 457  * \brief Recursive function for get_route_latency
 458  *
 459  * \param src the source host name
 460  * \param dst the destination host name
 461  * \param *e_route the route where the links are stored
 462  * \param *latency the latency, if needed
 463  *
 464  * This function is called by "get_route" and "get_latency". It allows to walk
 465  * recursively through the routing components tree.
 466  */
 467 static void _get_route_latency(const char *src, const char *dst,
 468                                xbt_dynar_t * route, double *latency)
 469 {
 470   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
 471   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 472
 473   AS_t common_father;
 474   AS_t src_father;
 475   AS_t dst_father;
 476   elements_father(src, dst, &common_father, &src_father, &dst_father);
 477
 478   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 479
 480     route_extended_t e_route = NULL;
 481     if (route) {
 482       e_route = common_father->get_route(common_father, src, dst);
 483       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
 484       *route = e_route->generic_route.link_list;
 485     }
 486     if (latency) {
 487       *latency = common_father->get_latency(common_father, src, dst, e_route);
 488       xbt_assert(*latency >= 0.0,
 489                  "latency error on route between \"%s\" and \"%s\"", src, dst);
 490     }
 491     if (e_route) {
 492       xbt_free(e_route->src_gateway);
 493       xbt_free(e_route->dst_gateway);
 494       xbt_free(e_route);
 495     }
 496
 497   } else {                      /* SURF_ROUTING_RECURSIVE */
 498
 499     route_extended_t e_route_bypass = NULL;
 500     if (common_father->get_bypass_route)
 501       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
 502
 503     xbt_assert(!latency || !e_route_bypass,
 504                "Bypass cannot work yet with get_latency");
 505
 506     route_extended_t e_route_cnt = e_route_bypass
 507         ? e_route_bypass : common_father->get_route(common_father,
 508                                                     src_father->name,
 509                                                     dst_father->name);
 510
 511     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
 512                src_father->name, dst_father->name);
 513
 514     xbt_assert((e_route_cnt->src_gateway == NULL) ==
 515                (e_route_cnt->dst_gateway == NULL),
 516                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
 517
 518     if (route) {
 519       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
 520     }
 521     if (latency) {
 522       *latency = common_father->get_latency(common_father,
 523                                             src_father->name, dst_father->name,
 524                                             e_route_cnt);
 525       xbt_assert(*latency >= 0.0,
 526                  "latency error on route between \"%s\" and \"%s\"",
 527                  src_father->name, dst_father->name);
 528     }
 529
 530     void *link;
 531     unsigned int cpt;
 532
 533     if (strcmp(src, e_route_cnt->src_gateway)) {
 534       double latency_src;
 535       xbt_dynar_t route_src;
 536
 537       _get_route_latency(src, e_route_cnt->src_gateway,
 538                          (route ? &route_src : NULL),
 539                          (latency ? &latency_src : NULL));
 540       if (route) {
 541         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
 542                    src, e_route_cnt->src_gateway);
 543         xbt_dynar_foreach(route_src, cpt, link) {
 544           xbt_dynar_push(*route, &link);
 545         }
 546         xbt_dynar_free(&route_src);
 547       }
 548       if (latency) {
 549         xbt_assert(latency_src >= 0.0,
 550                    "latency error on route between \"%s\" and \"%s\"",
 551                    src, e_route_cnt->src_gateway);
 552         *latency += latency_src;
 553       }
 554     }
 555
 556     if (route) {
 557       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
 558         xbt_dynar_push(*route, &link);
 559       }
 560     }
 561
 562     if (strcmp(e_route_cnt->dst_gateway, dst)) {
 563       double latency_dst;
 564       xbt_dynar_t route_dst;
 565
 566       _get_route_latency(e_route_cnt->dst_gateway, dst,
 567                          (route ? &route_dst : NULL),
 568                          (latency ? &latency_dst : NULL));
 569       if (route) {
 570         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
 571                    e_route_cnt->dst_gateway, dst);
 572         xbt_dynar_foreach(route_dst, cpt, link) {
 573           xbt_dynar_push(*route, &link);
 574         }
 575         xbt_dynar_free(&route_dst);
 576       }
 577       if (latency) {
 578         xbt_assert(latency_dst >= 0.0,
 579                    "latency error on route between \"%s\" and \"%s\"",
 580                    e_route_cnt->dst_gateway, dst);
 581         *latency += latency_dst;
 582       }
 583     }
 584
 585     generic_free_extended_route(e_route_cnt);
 586   }
 587 }
 588
 589 /**
 590  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
 591  */
 592 void routing_get_route_and_latency(const char *src, const char *dst,
 593                               xbt_dynar_t * route, double *latency, int cleanup)
 594 {
 595   static xbt_dynar_t last_route = NULL;
 596
 597   _get_route_latency(src, dst, route, latency);
 598   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
 599   xbt_assert(!latency || *latency >= 0.0,
 600              "latency error on route between \"%s\" and \"%s\"", src, dst);
 601   if (route) {
 602     xbt_dynar_free(&last_route);
 603     last_route = cleanup ? *route : NULL;
 604   }
 605 }
 606
 607 /**
 608  * \brief Find a route between hosts
 609  *
 610  * \param src the source host name
 611  * \param dst the destination host name
 612  *
 613  * walk through the routing components tree and find a route between hosts
 614  * by calling the differents "get_route" functions in each routing component.
 615  * No need to free the returned dynar. It will be freed at the next call.
 616  */
 617 xbt_dynar_t routing_get_route(const char *src, const char *dst) {
 618   xbt_dynar_t route = NULL;
 619   routing_get_route_and_latency(src, dst, &route, NULL, 1);
 620   return route;
 621 }
 622
 623 /**
 624  * \brief Generic method: find a route between hosts
 625  *
 626  * \param src the source host name
 627  * \param dst the destination host name
 628  *
 629  * walk through the routing components tree and find a route between hosts
 630  * by calling the differents "get_route" functions in each routing component.
 631  * Leaves the caller the responsability to clean the returned dynar.
 632  */
 633 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
 634 {
 635   xbt_dynar_t route = NULL;
 636   routing_get_route_and_latency(src, dst, &route, NULL, 0);
 637   return route;
 638 }
 639
 640 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 641 {
 642   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 643
 644   //adding my one link routes
 645   unsigned int cpt;
 646   void *link;
 647   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 648   if (onelink_mine) {
 649     xbt_dynar_foreach(onelink_mine, cpt, link) {
 650       xbt_dynar_push(ret, &link);
 651     }
 652   }
 653   //recursing
 654   char *key;
 655   xbt_dict_cursor_t cursor = NULL;
 656   AS_t rc_child;
 657   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 658     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 659     if (onelink_child) {
 660       xbt_dynar_foreach(onelink_child, cpt, link) {
 661         xbt_dynar_push(ret, &link);
 662       }
 663     }
 664   }
 665   return ret;
 666 }
 667
 668 static xbt_dynar_t get_onelink_routes(void)
 669 {
 670   return recursive_get_onelink_routes(global_routing->root);
 671 }
 672
 673 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 674 {
 675   network_element_info_t rc = NULL;
 676
 677   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 678   if (rc)
 679     return rc->rc_type;
 680
 681   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 682   if (rc)
 683     return rc->rc_type;
 684
 685   return SURF_NETWORK_ELEMENT_NULL;
 686 }
 687
 688 /**
 689  * \brief Generic method: create the global routing schema
 690  *
 691  * Make a global routing structure and set all the parsing functions.
 692  */
 693 void routing_model_create(size_t size_of_links, void *loopback)
 694 {
 695   /* config the uniq global routing */
 696   global_routing = xbt_new0(s_routing_global_t, 1);
 697   global_routing->root = NULL;
 698   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 699   global_routing->get_onelink_routes = get_onelink_routes;
 700   global_routing->loopback = loopback;
 701   global_routing->size_of_link = size_of_links;
 702   /* no current routing at moment */
 703   current_routing = NULL;
 704 }
 705
 706
 707 /* ************************************************** */
 708 /* ********** PATERN FOR NEW ROUTING **************** */
 709
 710 /* The minimal configuration of a new routing model need the next functions,
 711  * also you need to set at the start of the file, the new model in the model
 712  * list. Remember keep the null ending of the list.
 713  */
 714 /*** Routing model structure ***/
 715 // typedef struct {
 716 //   s_routing_component_t generic_routing;
 717 //   /* things that your routing model need */
 718 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 719
 720 /*** Parse routing model functions ***/
 721 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 722 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 723 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 724 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 725 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 726
 727 /*** Business methods ***/
 728 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 729 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 730 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 731
 732 /*** Creation routing model functions ***/
 733 // static void* model_NEW_create(void) {
 734 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 735 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 736 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 737 //   new_component->generic_routing.set_route = model_NEW_set_route;
 738 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 739 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 740 //   new_component->generic_routing.get_route = NEW_get_route;
 741 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 742 //   new_component->generic_routing.finalize = NEW_finalize;
 743 //   /* initialization of internal structures */
 744 //   return new_component;
 745 // } /* mandatory */
 746 // static void  model_NEW_load(void) {}   /* mandatory */
 747 // static void  model_NEW_unload(void) {} /* mandatory */
 748 // static void  model_NEW_end(void) {}    /* mandatory */
 749
 750 /* ************************************************************************** */
 751 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 752
 753
 754 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 755 {
 756   char *host_id, *groups, *link_id = NULL;
 757   xbt_dict_t patterns = NULL;
 758
 759   s_sg_platf_host_cbarg_t host;
 760   s_sg_platf_link_cbarg_t link;
 761
 762   unsigned int iter;
 763   int start, end, i;
 764   xbt_dynar_t radical_elements;
 765   xbt_dynar_t radical_ends;
 766
 767   if (strcmp(cluster->availability_trace, "")
 768       || strcmp(cluster->state_trace, "")) {
 769     patterns = xbt_dict_new();
 770     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), free);
 771     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), free);
 772     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), free);
 773   }
 774
 775
 776   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 777   sg_platf_new_AS_begin(cluster->id, "Cluster");
 778
 779   //Make all hosts
 780   radical_elements = xbt_str_split(cluster->radical, ",");
 781   xbt_dynar_foreach(radical_elements, iter, groups) {
 782
 783     radical_ends = xbt_str_split(groups, "-");
 784     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 785
 786     switch (xbt_dynar_length(radical_ends)) {
 787     case 1:
 788       end = start;
 789       break;
 790     case 2:
 791       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 792       break;
 793     default:
 794       surf_parse_error("Malformed radical");
 795       break;
 796     }
 797     for (i = start; i <= end; i++) {
 798       host_id =
 799           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 800       link_id = bprintf("%s_link_%d", cluster->id, i);
 801
 802       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 803
 804       memset(&host, 0, sizeof(host));
 805       host.id = host_id;
 806       if (strcmp(cluster->availability_trace, "")) {
 807         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 808         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 809         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 810         host.power_trace = tmgr_trace_new(avail_file);
 811         xbt_free(avail_file);
 812       } else {
 813         XBT_DEBUG("\tavailability_file=\"\"");
 814       }
 815
 816       if (strcmp(cluster->state_trace, "")) {
 817         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 818         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 819         host.state_trace = tmgr_trace_new(avail_file);
 820         xbt_free(avail_file);
 821       } else {
 822         XBT_DEBUG("\tstate_file=\"\"");
 823       }
 824
 825       host.power_peak = cluster->power;
 826       host.power_scale = 1.0;
 827       host.core_amount = cluster->core_amount;
 828       host.initial_state = SURF_RESOURCE_ON;
 829       host.coord = "";
 830       sg_platf_new_host(&host);
 831       XBT_DEBUG("</host>");
 832
 833       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 834                 cluster->bw, cluster->lat);
 835
 836       memset(&link, 0, sizeof(link));
 837       link.id = link_id;
 838       link.bandwidth = cluster->bw;
 839       link.latency = cluster->lat;
 840       link.state = SURF_RESOURCE_ON;
 841       link.policy = cluster->sharing_policy;
 842       sg_platf_new_link(&link);
 843
 844       surf_parsing_link_up_down_t info =
 845           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 846       if (link.policy == SURF_LINK_FULLDUPLEX) {
 847         char *tmp_link = bprintf("%s_UP", link_id);
 848         info->link_up =
 849             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 850         free(tmp_link);
 851         tmp_link = bprintf("%s_DOWN", link_id);
 852         info->link_down =
 853             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 854         free(tmp_link);
 855       } else {
 856         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 857         info->link_down = info->link_up;
 858       }
 859       surf_routing_cluster_add_link(host_id, info);
 860
 861       xbt_free(link_id);
 862       xbt_free(host_id);
 863     }
 864
 865     xbt_dynar_free(&radical_ends);
 866   }
 867   xbt_dynar_free(&radical_elements);
 868
 869   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 870   // and it's very useful to connect clusters together
 871   XBT_DEBUG(" ");
 872   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 873   char *newid = NULL;
 874   s_sg_platf_router_cbarg_t router;
 875   memset(&router, 0, sizeof(router));
 876   router.id = cluster->router_id;
 877   router.coord = "";
 878   if (!router.id || !strcmp(router.id, ""))
 879     router.id = newid =
 880         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 881                 cluster->suffix);
 882   sg_platf_new_router(&router);
 883   free(newid);
 884
 885   //Make the backbone
 886   if ((cluster->bb_bw != 0) && (cluster->bb_lat != 0)) {
 887     char *link_backbone = bprintf("%s_backbone", cluster->id);
 888     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 889               cluster->bb_bw, cluster->bb_lat);
 890
 891     memset(&link, 0, sizeof(link));
 892     link.id = link_backbone;
 893     link.bandwidth = cluster->bb_bw;
 894     link.latency = cluster->bb_lat;
 895     link.state = SURF_RESOURCE_ON;
 896     link.policy = cluster->bb_sharing_policy;
 897
 898     sg_platf_new_link(&link);
 899
 900     surf_routing_cluster_add_backbone(current_routing, xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 901
 902     free(link_backbone);
 903   }
 904
 905   XBT_DEBUG("</AS>");
 906   sg_platf_new_AS_end();
 907   XBT_DEBUG(" ");
 908   xbt_dict_free(&patterns); // no op if it were never set
 909 }
 910
 911 static void routing_parse_postparse(void) {
 912   xbt_dict_free(&random_value);
 913 }
 914
 915 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 916 {
 917   static int AX_ptr = 0;
 918   char *host_id = NULL;
 919   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
 920
 921   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
 922   static unsigned int surfxml_buffer_stack_stack[1024];
 923
 924   surfxml_buffer_stack_stack[0] = 0;
 925
 926   surfxml_bufferstack_push(1);
 927
 928   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
 929   sg_platf_new_AS_begin(peer->id, "Full");
 930
 931   XBT_DEBUG(" ");
 932   host_id = HOST_PEER(peer->id);
 933   router_id = ROUTER_PEER(peer->id);
 934   link_id_up = LINK_UP_PEER(peer->id);
 935   link_id_down = LINK_DOWN_PEER(peer->id);
 936
 937   link_router = bprintf("%s_link_router", peer->id);
 938   link_backbone = bprintf("%s_backbone", peer->id);
 939
 940   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 941   s_sg_platf_host_cbarg_t host;
 942   memset(&host, 0, sizeof(host));
 943   host.initial_state = SURF_RESOURCE_ON;
 944   host.id = host_id;
 945   host.power_peak = peer->power;
 946   host.power_scale = 1.0;
 947   host.power_trace = peer->availability_trace;
 948   host.state_trace = peer->state_trace;
 949   host.core_amount = 1;
 950   sg_platf_new_host(&host);
 951
 952
 953   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
 954   s_sg_platf_router_cbarg_t router;
 955   memset(&router, 0, sizeof(router));
 956   router.id = router_id;
 957   router.coord = peer->coord;
 958   sg_platf_new_router(&router);
 959
 960   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
 961             peer->bw_in, peer->lat);
 962   s_sg_platf_link_cbarg_t link;
 963   memset(&link, 0, sizeof(link));
 964   link.state = SURF_RESOURCE_ON;
 965   link.policy = SURF_LINK_SHARED;
 966   link.id = link_id_up;
 967   link.bandwidth = peer->bw_in;
 968   link.latency = peer->lat;
 969   sg_platf_new_link(&link);
 970
 971   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
 972   // Instead, it should be created fullduplex, and the models will do what's needed in this case
 973   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
 974             peer->bw_out, peer->lat);
 975   link.id = link_id_down;
 976   sg_platf_new_link(&link);
 977
 978   XBT_DEBUG(" ");
 979
 980   // begin here
 981   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
 982   XBT_DEBUG("symmetrical=\"NO\">");
 983   SURFXML_BUFFER_SET(route_src, host_id);
 984   SURFXML_BUFFER_SET(route_dst, router_id);
 985   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
 986   SURFXML_START_TAG(route);
 987
 988   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
 989   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
 990   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
 991   SURFXML_START_TAG(link_ctn);
 992   SURFXML_END_TAG(link_ctn);
 993
 994   XBT_DEBUG("</route>");
 995   SURFXML_END_TAG(route);
 996
 997   //Opposite Route
 998   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
 999   XBT_DEBUG("symmetrical=\"NO\">");
1000   SURFXML_BUFFER_SET(route_src, router_id);
1001   SURFXML_BUFFER_SET(route_dst, host_id);
1002   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1003   SURFXML_START_TAG(route);
1004
1005   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1006   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1007   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1008   SURFXML_START_TAG(link_ctn);
1009   SURFXML_END_TAG(link_ctn);
1010
1011   XBT_DEBUG("</route>");
1012   SURFXML_END_TAG(route);
1013
1014   XBT_DEBUG("</AS>");
1015   sg_platf_new_AS_end();
1016   XBT_DEBUG(" ");
1017
1018   //xbt_dynar_free(&tab_elements_num);
1019   free(host_id);
1020   free(router_id);
1021   free(link_router);
1022   free(link_backbone);
1023   free(link_id_up);
1024   free(link_id_down);
1025   surfxml_bufferstack_pop(1);
1026 }
1027
1028 static void routing_parse_Srandom(void)
1029 {
1030   double mean, std, min, max, seed;
1031   char *random_id = A_surfxml_random_id;
1032   char *random_radical = A_surfxml_random_radical;
1033   char *rd_name = NULL;
1034   char *rd_value;
1035   mean = surf_parse_get_double(A_surfxml_random_mean);
1036   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1037   min = surf_parse_get_double(A_surfxml_random_min);
1038   max = surf_parse_get_double(A_surfxml_random_max);
1039   seed = surf_parse_get_double(A_surfxml_random_seed);
1040
1041   double res = 0;
1042   int i = 0;
1043   random_data_t random = xbt_new0(s_random_data_t, 1);
1044   char *tmpbuf;
1045
1046   xbt_dynar_t radical_elements;
1047   unsigned int iter;
1048   char *groups;
1049   int start, end;
1050   xbt_dynar_t radical_ends;
1051
1052   random->generator = A_surfxml_random_generator;
1053   random->seed = seed;
1054   random->min = min;
1055   random->max = max;
1056
1057   /* Check user stupidities */
1058   if (max < min)
1059     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1060   if (mean < min)
1061     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1062   if (mean > max)
1063     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1064
1065   /* normalize the mean and standard deviation before storing */
1066   random->mean = (mean - min) / (max - min);
1067   random->std = std / (max - min);
1068
1069   if (random->mean * (1 - random->mean) < random->std * random->std)
1070     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1071            random->mean, random->std);
1072
1073   XBT_DEBUG
1074       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1075        random_id, random->min, random->max, random->mean, random->std,
1076        random->generator, random->seed, random_radical);
1077
1078   if (!random_value)
1079     random_value = xbt_dict_new();
1080
1081   if (!strcmp(random_radical, "")) {
1082     res = random_generate(random);
1083     rd_value = bprintf("%f", res);
1084     xbt_dict_set(random_value, random_id, rd_value, free);
1085   } else {
1086     radical_elements = xbt_str_split(random_radical, ",");
1087     xbt_dynar_foreach(radical_elements, iter, groups) {
1088       radical_ends = xbt_str_split(groups, "-");
1089       switch (xbt_dynar_length(radical_ends)) {
1090       case 1:
1091         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1092                    "Custom Random '%s' already exists !", random_id);
1093         res = random_generate(random);
1094         tmpbuf =
1095             bprintf("%s%d", random_id,
1096                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1097         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1098         xbt_free(tmpbuf);
1099         break;
1100
1101       case 2:
1102         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1103         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1104         for (i = start; i <= end; i++) {
1105           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1106                      "Custom Random '%s' already exists !", bprintf("%s%d",
1107                                                                     random_id,
1108                                                                     i));
1109           res = random_generate(random);
1110           tmpbuf = bprintf("%s%d", random_id, i);
1111           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1112           xbt_free(tmpbuf);
1113         }
1114         break;
1115       default:
1116         XBT_INFO("Malformed radical");
1117         break;
1118       }
1119       res = random_generate(random);
1120       rd_name = bprintf("%s_router", random_id);
1121       rd_value = bprintf("%f", res);
1122       xbt_dict_set(random_value, rd_name, rd_value, free);
1123
1124       xbt_dynar_free(&radical_ends);
1125     }
1126     free(rd_name);
1127     xbt_dynar_free(&radical_elements);
1128   }
1129 }
1130
1131 void routing_register_callbacks()
1132 {
1133   sg_platf_host_add_cb(parse_S_host);
1134   sg_platf_router_add_cb(parse_S_router);
1135
1136   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1137
1138   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1139   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1140   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1141                        &routing_parse_S_bypassRoute);
1142
1143   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1144
1145   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1146   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1147   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1148                        &routing_parse_E_bypassRoute);
1149
1150   sg_platf_cluster_add_cb(routing_parse_cluster);
1151
1152   sg_platf_peer_add_cb(routing_parse_peer);
1153   sg_platf_postparse_add_cb(routing_parse_postparse);
1154
1155 #ifdef HAVE_TRACING
1156   instr_routing_define_callbacks();
1157 #endif
1158 }
1159
1160 /**
1161  * \brief Recursive function for finalize
1162  *
1163  * \param rc the source host name
1164  *
1165  * This fuction is call by "finalize". It allow to finalize the
1166  * AS or routing components. It delete all the structures.
1167  */
1168 static void finalize_rec(AS_t as) {
1169   xbt_dict_cursor_t cursor = NULL;
1170   char *key;
1171   AS_t elem;
1172
1173   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1174     finalize_rec(elem);
1175   }
1176
1177   as->finalize(as);
1178 }
1179
1180 /** \brief Frees all memory allocated by the routing module */
1181 void routing_exit(void) {
1182   if (!global_routing)
1183     return;
1184   finalize_rec(global_routing->root);
1185   xbt_free(global_routing);
1186 }