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 char *replace_random_parameter(char *chaine);
  54 static void routing_parse_postparse(void);
  55
  56 /* this lines are only for replace use like index in the model table */
  57 typedef enum {
  58   SURF_MODEL_FULL = 0,
  59   SURF_MODEL_FLOYD,
  60   SURF_MODEL_DIJKSTRA,
  61   SURF_MODEL_DIJKSTRACACHE,
  62   SURF_MODEL_NONE,
  63   SURF_MODEL_RULEBASED,
  64   SURF_MODEL_VIVALDI,
  65   SURF_MODEL_CLUSTER
  66 } e_routing_types;
  67
  68 struct s_model_type routing_models[] = {
  69   {"Full",
  70    "Full routing data (fast, large memory requirements, fully expressive)",
  71    model_full_create, model_full_end},
  72   {"Floyd",
  73    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  74    model_floyd_create, model_floyd_end},
  75   {"Dijkstra",
  76    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  77    model_dijkstra_create, model_dijkstra_both_end},
  78   {"DijkstraCache",
  79    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  80    model_dijkstracache_create, model_dijkstra_both_end},
  81   {"none", "No routing (usable with Constant network only)",
  82    model_none_create,  NULL},
  83   {"RuleBased", "Rule-Based routing data (...)",
  84    model_rulebased_create, NULL},
  85   {"Vivaldi", "Vivaldi routing",
  86    model_vivaldi_create, NULL},
  87   {"Cluster", "Cluster routing",
  88    model_cluster_create, NULL},
  89   {NULL, NULL, NULL, NULL}
  90 };
  91
  92 /**
  93  * \brief Add a "host" to the network element list
  94  */
  95 static void parse_S_host(sg_platf_host_cbarg_t host)
  96 {
  97   network_element_info_t info = NULL;
  98   if (current_routing->hierarchy == SURF_ROUTING_NULL)
  99     current_routing->hierarchy = SURF_ROUTING_BASE;
 100   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 101              "Reading a host, processing unit \"%s\" already exists", host->id);
 102
 103   (*(current_routing->parse_PU)) (current_routing, host->id);
 104   info = xbt_new0(s_network_element_info_t, 1);
 105   info->rc_component = current_routing;
 106   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 107   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 108   if (host->coord && strcmp(host->coord, "")) {
 109     if (!COORD_HOST_LEVEL)
 110       xbt_die
 111           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 112     xbt_dynar_t ctn = xbt_str_split_str(host->coord, " ");
 113     xbt_dynar_shrink(ctn, 0);
 114     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 115   }
 116 }
 117
 118 /**
 119  * \brief Add a "router" to the network element list
 120  */
 121 static void parse_S_router(sg_platf_router_cbarg_t router)
 122 {
 123   network_element_info_t info = NULL;
 124   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 125     current_routing->hierarchy = SURF_ROUTING_BASE;
 126   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 127              "Reading a router, processing unit \"%s\" already exists",
 128              router->id);
 129
 130   (*(current_routing->parse_PU)) (current_routing, router->id);
 131   info = xbt_new0(s_network_element_info_t, 1);
 132   info->rc_component = current_routing;
 133   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 134
 135   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 136   if (strcmp(router->coord, "")) {
 137     if (!COORD_ASR_LEVEL)
 138       xbt_die
 139           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 140     xbt_dynar_t ctn = xbt_str_split_str(router->coord, " ");
 141     xbt_dynar_shrink(ctn, 0);
 142     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 143   }
 144 }
 145
 146
 147 /**
 148  * \brief Set the end points for a route
 149  */
 150 static void routing_parse_S_route(void)
 151 {
 152   if (src != NULL && dst != NULL && link_list != NULL)
 153     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 154            A_surfxml_route_src, A_surfxml_route_dst);
 155   src = A_surfxml_route_src;
 156   dst = A_surfxml_route_dst;
 157   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
 158              "Some limits are null in the route between \"%s\" and \"%s\"",
 159              src, dst);
 160   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 161 }
 162
 163 /**
 164  * \brief Set the end points and gateways for a ASroute
 165  */
 166 static void routing_parse_S_ASroute(void)
 167 {
 168   if (src != NULL && dst != NULL && link_list != NULL)
 169     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 170            A_surfxml_ASroute_src, A_surfxml_ASroute_dst);
 171   src = A_surfxml_ASroute_src;
 172   dst = A_surfxml_ASroute_dst;
 173   gw_src = A_surfxml_ASroute_gw_src;
 174   gw_dst = A_surfxml_ASroute_gw_dst;
 175   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 176              || strlen(gw_dst) > 0,
 177              "Some limits are null in the route between \"%s\" and \"%s\"",
 178              src, dst);
 179   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 180 }
 181
 182 /**
 183  * \brief Set the end points for a bypassRoute
 184  */
 185 static void routing_parse_S_bypassRoute(void)
 186 {
 187   if (src != NULL && dst != NULL && link_list != NULL)
 188     THROWF(arg_error, 0,
 189            "Bypass Route between %s to %s can not be defined",
 190            A_surfxml_bypassRoute_src, A_surfxml_bypassRoute_dst);
 191   src = A_surfxml_bypassRoute_src;
 192   dst = A_surfxml_bypassRoute_dst;
 193   gw_src = A_surfxml_bypassRoute_gw_src;
 194   gw_dst = A_surfxml_bypassRoute_gw_dst;
 195   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 196              || strlen(gw_dst) > 0,
 197              "Some limits are null in the route between \"%s\" and \"%s\"",
 198              src, dst);
 199   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 200 }
 201
 202 /**
 203  * \brief Set a new link on the actual list of link for a route or ASroute from XML
 204  */
 205
 206 static void routing_parse_link_ctn(void)
 207 {
 208   char *link_id;
 209   switch (A_surfxml_link_ctn_direction) {
 210   case AU_surfxml_link_ctn_direction:
 211   case A_surfxml_link_ctn_direction_NONE:
 212     link_id = xbt_strdup(A_surfxml_link_ctn_id);
 213     break;
 214   case A_surfxml_link_ctn_direction_UP:
 215     link_id = bprintf("%s_UP", A_surfxml_link_ctn_id);
 216     break;
 217   case A_surfxml_link_ctn_direction_DOWN:
 218     link_id = bprintf("%s_DOWN", A_surfxml_link_ctn_id);
 219     break;
 220   }
 221   xbt_dynar_push(link_list, &link_id);
 222 }
 223
 224 /**
 225  * \brief Store the route by calling the set_route function of the current routing component
 226  */
 227 static void routing_parse_E_route(void)
 228 {
 229   route_extended_t route = xbt_new0(s_route_extended_t, 1);
 230   route->generic_route.link_list = link_list;
 231   xbt_assert(current_routing->parse_route,
 232              "no defined method \"set_route\" in \"%s\"",
 233              current_routing->name);
 234   (*(current_routing->parse_route)) (current_routing, src, dst, route);
 235   link_list = NULL;
 236   src = NULL;
 237   dst = NULL;
 238 }
 239
 240 /**
 241  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 242  */
 243 static void routing_parse_E_ASroute(void)
 244 {
 245   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 246   e_route->generic_route.link_list = link_list;
 247   e_route->src_gateway = xbt_strdup(gw_src);
 248   e_route->dst_gateway = xbt_strdup(gw_dst);
 249   xbt_assert(current_routing->parse_ASroute,
 250              "no defined method \"set_ASroute\" in \"%s\"",
 251              current_routing->name);
 252   (*(current_routing->parse_ASroute)) (current_routing, src, dst, e_route);
 253   link_list = NULL;
 254   src = NULL;
 255   dst = NULL;
 256   gw_src = NULL;
 257   gw_dst = NULL;
 258 }
 259
 260 /**
 261  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 262  */
 263 static void routing_parse_E_bypassRoute(void)
 264 {
 265   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 266   e_route->generic_route.link_list = link_list;
 267   e_route->src_gateway = xbt_strdup(gw_src);
 268   e_route->dst_gateway = xbt_strdup(gw_dst);
 269   xbt_assert(current_routing->parse_bypassroute,
 270              "Bypassing mechanism not implemented by routing '%s'",
 271              current_routing->name);
 272   (*(current_routing->parse_bypassroute)) (current_routing, src, dst, e_route);
 273   link_list = NULL;
 274   src = NULL;
 275   dst = NULL;
 276   gw_src = NULL;
 277   gw_dst = NULL;
 278 }
 279
 280 /**
 281  * \brief Make a new routing component to the platform
 282  *
 283  * Add a new autonomous system to the platform. Any elements (such as host,
 284  * router or sub-AS) added after this call and before the corresponding call
 285  * to sg_platf_new_AS_close() will be added to this AS.
 286  *
 287  * Once this function was called, the configuration concerning the used
 288  * models cannot be changed anymore.
 289  *
 290  * @param AS_id name of this autonomous system. Must be unique in the platform
 291  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 292  */
 293 void routing_AS_begin(const char *AS_id, const char *wanted_routing_type)
 294 {
 295   AS_t new_as;
 296   routing_model_description_t model = NULL;
 297   int cpt;
 298
 299   /* search the routing model */
 300   for (cpt = 0; routing_models[cpt].name; cpt++)
 301     if (!strcmp(wanted_routing_type, routing_models[cpt].name))
 302       model = &routing_models[cpt];
 303   /* if its not exist, error */
 304   if (model == NULL) {
 305     fprintf(stderr, "Routing model %s not found. Existing models:\n",
 306             wanted_routing_type);
 307     for (cpt = 0; routing_models[cpt].name; cpt++)
 308       fprintf(stderr, "   %s: %s\n", routing_models[cpt].name,
 309               routing_models[cpt].desc);
 310     xbt_die(NULL);
 311   }
 312
 313   /* make a new routing component */
 314   new_as = (AS_t) (*(model->create)) ();
 315   new_as->model_desc = model;
 316   new_as->hierarchy = SURF_ROUTING_NULL;
 317   new_as->name = xbt_strdup(AS_id);
 318
 319   if (current_routing == NULL && global_routing->root == NULL) {
 320
 321     /* it is the first one */
 322     new_as->routing_father = NULL;
 323     global_routing->root = new_as;
 324
 325   } else if (current_routing != NULL && global_routing->root != NULL) {
 326
 327     xbt_assert(!xbt_dict_get_or_null
 328                (current_routing->routing_sons, AS_id),
 329                "The AS \"%s\" already exists", AS_id);
 330     /* it is a part of the tree */
 331     new_as->routing_father = current_routing;
 332     /* set the father behavior */
 333     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 334       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 335     /* add to the sons dictionary */
 336     xbt_dict_set(current_routing->routing_sons, AS_id,
 337                  (void *) new_as, NULL);
 338     /* add to the father element list */
 339     (*(current_routing->parse_AS)) (current_routing, AS_id);
 340   } else {
 341     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 342   }
 343   /* set the new current component of the tree */
 344   current_routing = new_as;
 345 }
 346
 347 /**
 348  * \brief Specify that the current description of AS is finished
 349  *
 350  * Once you've declared all the content of your AS, you have to close
 351  * it with this call. Your AS is not usable until you call this function.
 352  *
 353  * @fixme: this call is not as robust as wanted: bad things WILL happen
 354  * if you call it twice for the same AS, or if you forget calling it, or
 355  * even if you add stuff to a closed AS
 356  *
 357  */
 358 void routing_AS_end()
 359 {
 360
 361   if (current_routing == NULL) {
 362     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 363   } else {
 364     network_element_info_t info = NULL;
 365     xbt_assert(!xbt_lib_get_or_null
 366                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
 367                "The AS \"%s\" already exists", current_routing->name);
 368     info = xbt_new0(s_network_element_info_t, 1);
 369     info->rc_component = current_routing->routing_father;
 370     info->rc_type = SURF_NETWORK_ELEMENT_AS;
 371     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
 372                 (void *) info);
 373
 374     if (current_routing->model_desc->end)
 375       (*(current_routing->model_desc->end)) (current_routing);
 376     current_routing = current_routing->routing_father;
 377   }
 378 }
 379
 380 /* Aux Business methods */
 381
 382 /**
 383  * \brief Get the AS father and the first elements of the chain
 384  *
 385  * \param src the source host name
 386  * \param dst the destination host name
 387  *
 388  * Get the common father of the to processing units, and the first different
 389  * father in the chain
 390  */
 391 static void elements_father(const char *src, const char *dst,
 392                             AS_t * res_father,
 393                             AS_t * res_src,
 394                             AS_t * res_dst)
 395 {
 396   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 397 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 398   AS_t src_as, dst_as;
 399   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 400   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 401   int index_src = 0;
 402   int index_dst = 0;
 403   AS_t current;
 404   AS_t current_src;
 405   AS_t current_dst;
 406   AS_t father;
 407
 408   /* (1) find the as where the src and dst are located */
 409   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
 410                                                         ROUTING_HOST_LEVEL);
 411   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
 412                                                         ROUTING_HOST_LEVEL);
 413   if (!src_data)
 414     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 415   if (!dst_data)
 416     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 417   src_as = src_data->rc_component;
 418   dst_as = dst_data->rc_component;
 419
 420   xbt_assert(src_as && dst_as,
 421              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
 422
 423   /* (2) find the path to the root routing component */
 424   for (current = src_as; current != NULL; current = current->routing_father) {
 425     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 426       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 427     path_src[index_src++] = current;
 428   }
 429   for (current = dst_as; current != NULL; current = current->routing_father) {
 430     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 431       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 432     path_dst[index_dst++] = current;
 433   }
 434
 435   /* (3) find the common father */
 436   do {
 437     current_src = path_src[--index_src];
 438     current_dst = path_dst[--index_dst];
 439   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 440
 441   /* (4) they are not in the same routing component, make the path */
 442   if (current_src == current_dst)
 443     father = current_src;
 444   else
 445     father = path_src[index_src + 1];
 446
 447   /* (5) result generation */
 448   *res_father = father;         /* first the common father of src and dst */
 449   *res_src = current_src;       /* second the first different father of src */
 450   *res_dst = current_dst;       /* three  the first different father of dst */
 451
 452 #undef ELEMENTS_FATHER_MAXDEPTH
 453 }
 454
 455 /* Global Business methods */
 456
 457 /**
 458  * \brief Recursive function for get_route_latency
 459  *
 460  * \param src the source host name
 461  * \param dst the destination host name
 462  * \param *e_route the route where the links are stored
 463  * \param *latency the latency, if needed
 464  *
 465  * This function is called by "get_route" and "get_latency". It allows to walk
 466  * recursively through the routing components tree.
 467  */
 468 static void _get_route_latency(const char *src, const char *dst,
 469                                xbt_dynar_t * route, double *latency)
 470 {
 471   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
 472   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 473
 474   AS_t common_father;
 475   AS_t src_father;
 476   AS_t dst_father;
 477   elements_father(src, dst, &common_father, &src_father, &dst_father);
 478
 479   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 480
 481     route_extended_t e_route = NULL;
 482     if (route) {
 483       e_route = common_father->get_route(common_father, src, dst);
 484       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
 485       *route = e_route->generic_route.link_list;
 486     }
 487     if (latency) {
 488       *latency = common_father->get_latency(common_father, src, dst, e_route);
 489       xbt_assert(*latency >= 0.0,
 490                  "latency error on route between \"%s\" and \"%s\"", src, dst);
 491     }
 492     if (e_route) {
 493       xbt_free(e_route->src_gateway);
 494       xbt_free(e_route->dst_gateway);
 495       xbt_free(e_route);
 496     }
 497
 498   } else {                      /* SURF_ROUTING_RECURSIVE */
 499
 500     route_extended_t e_route_bypass = NULL;
 501     if (common_father->get_bypass_route)
 502       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
 503
 504     xbt_assert(!latency || !e_route_bypass,
 505                "Bypass cannot work yet with get_latency");
 506
 507     route_extended_t e_route_cnt = e_route_bypass
 508         ? e_route_bypass : common_father->get_route(common_father,
 509                                                     src_father->name,
 510                                                     dst_father->name);
 511
 512     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
 513                src_father->name, dst_father->name);
 514
 515     xbt_assert((e_route_cnt->src_gateway == NULL) ==
 516                (e_route_cnt->dst_gateway == NULL),
 517                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
 518
 519     if (route) {
 520       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
 521     }
 522     if (latency) {
 523       *latency = common_father->get_latency(common_father,
 524                                             src_father->name, dst_father->name,
 525                                             e_route_cnt);
 526       xbt_assert(*latency >= 0.0,
 527                  "latency error on route between \"%s\" and \"%s\"",
 528                  src_father->name, dst_father->name);
 529     }
 530
 531     void *link;
 532     unsigned int cpt;
 533
 534     if (strcmp(src, e_route_cnt->src_gateway)) {
 535       double latency_src;
 536       xbt_dynar_t route_src;
 537
 538       _get_route_latency(src, e_route_cnt->src_gateway,
 539                          (route ? &route_src : NULL),
 540                          (latency ? &latency_src : NULL));
 541       if (route) {
 542         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
 543                    src, e_route_cnt->src_gateway);
 544         xbt_dynar_foreach(route_src, cpt, link) {
 545           xbt_dynar_push(*route, &link);
 546         }
 547         xbt_dynar_free(&route_src);
 548       }
 549       if (latency) {
 550         xbt_assert(latency_src >= 0.0,
 551                    "latency error on route between \"%s\" and \"%s\"",
 552                    src, e_route_cnt->src_gateway);
 553         *latency += latency_src;
 554       }
 555     }
 556
 557     if (route) {
 558       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
 559         xbt_dynar_push(*route, &link);
 560       }
 561     }
 562
 563     if (strcmp(e_route_cnt->dst_gateway, dst)) {
 564       double latency_dst;
 565       xbt_dynar_t route_dst;
 566
 567       _get_route_latency(e_route_cnt->dst_gateway, dst,
 568                          (route ? &route_dst : NULL),
 569                          (latency ? &latency_dst : NULL));
 570       if (route) {
 571         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
 572                    e_route_cnt->dst_gateway, dst);
 573         xbt_dynar_foreach(route_dst, cpt, link) {
 574           xbt_dynar_push(*route, &link);
 575         }
 576         xbt_dynar_free(&route_dst);
 577       }
 578       if (latency) {
 579         xbt_assert(latency_dst >= 0.0,
 580                    "latency error on route between \"%s\" and \"%s\"",
 581                    e_route_cnt->dst_gateway, dst);
 582         *latency += latency_dst;
 583       }
 584     }
 585
 586     generic_free_extended_route(e_route_cnt);
 587   }
 588 }
 589
 590 /**
 591  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
 592  */
 593 static void get_route_latency(const char *src, const char *dst,
 594                               xbt_dynar_t * route, double *latency, int cleanup)
 595 {
 596   static xbt_dynar_t last_route = NULL;
 597
 598   _get_route_latency(src, dst, route, latency);
 599   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
 600   xbt_assert(!latency || *latency >= 0.0,
 601              "latency error on route between \"%s\" and \"%s\"", src, dst);
 602   if (route) {
 603     xbt_dynar_free(&last_route);
 604     last_route = cleanup ? *route : NULL;
 605   }
 606 }
 607
 608 /**
 609  * \brief Find a route between hosts
 610  *
 611  * \param src the source host name
 612  * \param dst the destination host name
 613  *
 614  * walk through the routing components tree and find a route between hosts
 615  * by calling the differents "get_route" functions in each routing component.
 616  * No need to free the returned dynar. It will be freed at the next call.
 617  */
 618 xbt_dynar_t routing_get_route(const char *src, const char *dst) {
 619   xbt_dynar_t route = NULL;
 620   get_route_latency(src, dst, &route, NULL, 1);
 621   return route;
 622 }
 623
 624 /**
 625  * \brief Generic method: find a route between hosts
 626  *
 627  * \param src the source host name
 628  * \param dst the destination host name
 629  *
 630  * walk through the routing components tree and find a route between hosts
 631  * by calling the differents "get_route" functions in each routing component.
 632  * Leaves the caller the responsability to clean the returned dynar.
 633  */
 634 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
 635 {
 636   xbt_dynar_t route = NULL;
 637   get_route_latency(src, dst, &route, NULL, 0);
 638   return route;
 639 }
 640
 641 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 642 {
 643   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 644
 645   //adding my one link routes
 646   unsigned int cpt;
 647   void *link;
 648   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 649   if (onelink_mine) {
 650     xbt_dynar_foreach(onelink_mine, cpt, link) {
 651       xbt_dynar_push(ret, &link);
 652     }
 653   }
 654   //recursing
 655   char *key;
 656   xbt_dict_cursor_t cursor = NULL;
 657   AS_t rc_child;
 658   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 659     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 660     if (onelink_child) {
 661       xbt_dynar_foreach(onelink_child, cpt, link) {
 662         xbt_dynar_push(ret, &link);
 663       }
 664     }
 665   }
 666   return ret;
 667 }
 668
 669 static xbt_dynar_t get_onelink_routes(void)
 670 {
 671   return recursive_get_onelink_routes(global_routing->root);
 672 }
 673
 674 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 675 {
 676   network_element_info_t rc = NULL;
 677
 678   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 679   if (rc)
 680     return rc->rc_type;
 681
 682   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 683   if (rc)
 684     return rc->rc_type;
 685
 686   return SURF_NETWORK_ELEMENT_NULL;
 687 }
 688
 689 /**
 690  * \brief Generic method: create the global routing schema
 691  *
 692  * Make a global routing structure and set all the parsing functions.
 693  */
 694 void routing_model_create(size_t size_of_links, void *loopback)
 695 {
 696   /* config the uniq global routing */
 697   global_routing = xbt_new0(s_routing_global_t, 1);
 698   global_routing->root = NULL;
 699   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 700   global_routing->get_onelink_routes = get_onelink_routes;
 701   global_routing->get_route_latency = get_route_latency;
 702   global_routing->loopback = loopback;
 703   global_routing->size_of_link = size_of_links;
 704   /* no current routing at moment */
 705   current_routing = NULL;
 706 }
 707
 708
 709 /* ************************************************** */
 710 /* ********** PATERN FOR NEW ROUTING **************** */
 711
 712 /* The minimal configuration of a new routing model need the next functions,
 713  * also you need to set at the start of the file, the new model in the model
 714  * list. Remember keep the null ending of the list.
 715  */
 716 /*** Routing model structure ***/
 717 // typedef struct {
 718 //   s_routing_component_t generic_routing;
 719 //   /* things that your routing model need */
 720 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 721
 722 /*** Parse routing model functions ***/
 723 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 724 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 725 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 726 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 727 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 728
 729 /*** Business methods ***/
 730 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 731 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 732 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 733
 734 /*** Creation routing model functions ***/
 735 // static void* model_NEW_create(void) {
 736 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 737 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 738 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 739 //   new_component->generic_routing.set_route = model_NEW_set_route;
 740 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 741 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 742 //   new_component->generic_routing.get_route = NEW_get_route;
 743 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 744 //   new_component->generic_routing.finalize = NEW_finalize;
 745 //   /* initialization of internal structures */
 746 //   return new_component;
 747 // } /* mandatory */
 748 // static void  model_NEW_load(void) {}   /* mandatory */
 749 // static void  model_NEW_unload(void) {} /* mandatory */
 750 // static void  model_NEW_end(void) {}    /* mandatory */
 751
 752 /* ************************************************************************** */
 753 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 754
 755
 756 static void routing_parse_cluster(void)
 757 {
 758   char *host_id, *groups, *link_id = NULL;
 759   xbt_dict_t patterns = NULL;
 760
 761   s_sg_platf_host_cbarg_t host;
 762   s_sg_platf_link_cbarg_t link;
 763
 764   if (strcmp(struct_cluster->availability_trace, "")
 765       || strcmp(struct_cluster->state_trace, "")) {
 766     patterns = xbt_dict_new();
 767     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
 768     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
 769     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
 770   }
 771
 772   unsigned int iter;
 773   int start, end, i;
 774   xbt_dynar_t radical_elements;
 775   xbt_dynar_t radical_ends;
 776
 777   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
 778   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
 779
 780   //Make all hosts
 781   radical_elements = xbt_str_split(struct_cluster->radical, ",");
 782   xbt_dynar_foreach(radical_elements, iter, groups) {
 783     memset(&host, 0, sizeof(host));
 784
 785     radical_ends = xbt_str_split(groups, "-");
 786     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 787
 788     switch (xbt_dynar_length(radical_ends)) {
 789     case 1:
 790       end = start;
 791       break;
 792     case 2:
 793       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 794       break;
 795     default:
 796       surf_parse_error("Malformed radical");
 797       break;
 798     }
 799     for (i = start; i <= end; i++) {
 800       host_id =
 801           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
 802       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
 803
 804       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
 805                 struct_cluster->power);
 806       host.id = host_id;
 807       if (strcmp(struct_cluster->availability_trace, "")) {
 808         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 809         char *tmp_availability_file =
 810             xbt_str_varsubst(struct_cluster->availability_trace, patterns);
 811         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
 812         host.power_trace = tmgr_trace_new(tmp_availability_file);
 813         xbt_free(tmp_availability_file);
 814       } else {
 815         XBT_DEBUG("\tavailability_file=\"\"");
 816       }
 817       if (strcmp(struct_cluster->state_trace, "")) {
 818         char *tmp_state_file =
 819             xbt_str_varsubst(struct_cluster->state_trace, patterns);
 820         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
 821         host.state_trace = tmgr_trace_new(tmp_state_file);
 822         xbt_free(tmp_state_file);
 823       } else {
 824         XBT_DEBUG("\tstate_file=\"\"");
 825       }
 826
 827       host.power_peak = struct_cluster->power;
 828       host.power_scale = 1.0;
 829       host.core_amount = struct_cluster->core_amount;
 830       host.initial_state = SURF_RESOURCE_ON;
 831       host.coord = "";
 832       sg_platf_new_host(&host);
 833       XBT_DEBUG("</host>");
 834
 835       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 836                 struct_cluster->bw, struct_cluster->lat);
 837
 838       memset(&link, 0, sizeof(link));
 839       link.id = link_id;
 840       link.bandwidth = struct_cluster->bw;
 841       link.latency = struct_cluster->lat;
 842       link.state = SURF_RESOURCE_ON;
 843
 844       switch (struct_cluster->sharing_policy) {
 845       case A_surfxml_cluster_sharing_policy_SHARED:
 846         link.policy = SURF_LINK_SHARED;
 847         break;
 848       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
 849         link.policy = SURF_LINK_FULLDUPLEX;
 850         break;
 851       case A_surfxml_cluster_sharing_policy_FATPIPE:
 852         link.policy = SURF_LINK_FATPIPE;
 853         break;
 854       default:
 855         surf_parse_error(bprintf
 856                          ("Invalid cluster sharing policy for cluster %s",
 857                           struct_cluster->id));
 858         break;
 859       }
 860       sg_platf_new_link(&link);
 861
 862       surf_parsing_link_up_down_t info =
 863           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 864       if (link.policy == SURF_LINK_FULLDUPLEX) {
 865         char *tmp_link = bprintf("%s_UP", link_id);
 866         info->link_up =
 867             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 868         free(tmp_link);
 869         tmp_link = bprintf("%s_DOWN", link_id);
 870         info->link_down =
 871             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 872         free(tmp_link);
 873       } else {
 874         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 875         info->link_down = info->link_up;
 876       }
 877       surf_routing_cluster_add_link(host_id, info);
 878
 879       xbt_free(link_id);
 880       xbt_free(host_id);
 881     }
 882
 883     xbt_dynar_free(&radical_ends);
 884   }
 885   xbt_dynar_free(&radical_elements);
 886
 887   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written, and it's very useful to connect clusters together
 888   XBT_DEBUG(" ");
 889   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
 890   s_sg_platf_router_cbarg_t router;
 891   char *newid = NULL;
 892   memset(&router, 0, sizeof(router));
 893   router.id = struct_cluster->router_id;
 894   router.coord = "";
 895   if (!router.id || !strcmp(router.id, ""))
 896     router.id = newid =
 897         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
 898                 struct_cluster->suffix);
 899   sg_platf_new_router(&router);
 900   free(newid);
 901
 902   //Make the backbone
 903   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
 904     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
 905     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 906               struct_cluster->bb_bw, struct_cluster->bb_lat);
 907
 908     memset(&link, 0, sizeof(link));
 909     link.id = link_backbone;
 910     link.bandwidth = struct_cluster->bb_bw;
 911     link.latency = struct_cluster->bb_lat;
 912     link.state = SURF_RESOURCE_ON;
 913
 914     switch (struct_cluster->bb_sharing_policy) {
 915     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
 916       link.policy = SURF_LINK_FATPIPE;
 917       break;
 918     case A_surfxml_cluster_bb_sharing_policy_SHARED:
 919       link.policy = SURF_LINK_SHARED;
 920       break;
 921     default:
 922       surf_parse_error(bprintf
 923                        ("Invalid bb sharing policy in cluster %s",
 924                         struct_cluster->id));
 925       break;
 926     }
 927
 928     sg_platf_new_link(&link);
 929
 930     surf_routing_cluster_add_backbone(current_routing, xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 931
 932     free(link_backbone);
 933   }
 934
 935   XBT_DEBUG(" ");
 936
 937   char *new_suffix = xbt_strdup("");
 938
 939   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
 940   xbt_dynar_foreach(radical_elements, iter, groups) {
 941     if (strcmp(groups, "")) {
 942       char *old_suffix = new_suffix;
 943       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
 944       free(old_suffix);
 945     }
 946   }
 947
 948   xbt_dynar_free(&radical_elements);
 949   xbt_free(new_suffix);
 950
 951   XBT_DEBUG("</AS>");
 952   sg_platf_new_AS_end();
 953   XBT_DEBUG(" ");
 954   xbt_dict_free(&patterns); // no op if it were never set
 955 }
 956
 957 static void routing_parse_postparse(void) {
 958   xbt_dict_free(&random_value);
 959 }
 960
 961 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 962 {
 963   static int AX_ptr = 0;
 964   char *host_id = NULL;
 965   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
 966
 967   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
 968   static unsigned int surfxml_buffer_stack_stack[1024];
 969
 970   surfxml_buffer_stack_stack[0] = 0;
 971
 972   surfxml_bufferstack_push(1);
 973
 974   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
 975   sg_platf_new_AS_begin(peer->id, "Full");
 976
 977   XBT_DEBUG(" ");
 978   host_id = HOST_PEER(peer->id);
 979   router_id = ROUTER_PEER(peer->id);
 980   link_id_up = LINK_UP_PEER(peer->id);
 981   link_id_down = LINK_DOWN_PEER(peer->id);
 982
 983   link_router = bprintf("%s_link_router", peer->id);
 984   link_backbone = bprintf("%s_backbone", peer->id);
 985
 986   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 987   s_sg_platf_host_cbarg_t host;
 988   memset(&host, 0, sizeof(host));
 989   host.initial_state = SURF_RESOURCE_ON;
 990   host.id = host_id;
 991   host.power_peak = peer->power;
 992   host.power_scale = 1.0;
 993   host.power_trace = peer->availability_trace;
 994   host.state_trace = peer->state_trace;
 995   host.core_amount = 1;
 996   sg_platf_new_host(&host);
 997
 998
 999   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1000   s_sg_platf_router_cbarg_t router;
1001   memset(&router, 0, sizeof(router));
1002   router.id = router_id;
1003   router.coord = peer->coord;
1004   sg_platf_new_router(&router);
1005
1006   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1007             peer->bw_in, peer->lat);
1008   s_sg_platf_link_cbarg_t link;
1009   memset(&link, 0, sizeof(link));
1010   link.state = SURF_RESOURCE_ON;
1011   link.policy = SURF_LINK_SHARED;
1012   link.id = link_id_up;
1013   link.bandwidth = peer->bw_in;
1014   link.latency = peer->lat;
1015   sg_platf_new_link(&link);
1016
1017   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1018   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1019   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1020             peer->bw_out, peer->lat);
1021   link.id = link_id_down;
1022   sg_platf_new_link(&link);
1023
1024   XBT_DEBUG(" ");
1025
1026   // begin here
1027   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1028   XBT_DEBUG("symmetrical=\"NO\">");
1029   SURFXML_BUFFER_SET(route_src, host_id);
1030   SURFXML_BUFFER_SET(route_dst, router_id);
1031   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1032   SURFXML_START_TAG(route);
1033
1034   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1035   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1036   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1037   SURFXML_START_TAG(link_ctn);
1038   SURFXML_END_TAG(link_ctn);
1039
1040   XBT_DEBUG("</route>");
1041   SURFXML_END_TAG(route);
1042
1043   //Opposite Route
1044   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1045   XBT_DEBUG("symmetrical=\"NO\">");
1046   SURFXML_BUFFER_SET(route_src, router_id);
1047   SURFXML_BUFFER_SET(route_dst, host_id);
1048   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1049   SURFXML_START_TAG(route);
1050
1051   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1052   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1053   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1054   SURFXML_START_TAG(link_ctn);
1055   SURFXML_END_TAG(link_ctn);
1056
1057   XBT_DEBUG("</route>");
1058   SURFXML_END_TAG(route);
1059
1060   XBT_DEBUG("</AS>");
1061   sg_platf_new_AS_end();
1062   XBT_DEBUG(" ");
1063
1064   //xbt_dynar_free(&tab_elements_num);
1065   free(host_id);
1066   free(router_id);
1067   free(link_router);
1068   free(link_backbone);
1069   free(link_id_up);
1070   free(link_id_down);
1071   surfxml_bufferstack_pop(1);
1072 }
1073
1074 static void routing_parse_Srandom(void)
1075 {
1076   double mean, std, min, max, seed;
1077   char *random_id = A_surfxml_random_id;
1078   char *random_radical = A_surfxml_random_radical;
1079   char *rd_name = NULL;
1080   char *rd_value;
1081   mean = surf_parse_get_double(A_surfxml_random_mean);
1082   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1083   min = surf_parse_get_double(A_surfxml_random_min);
1084   max = surf_parse_get_double(A_surfxml_random_max);
1085   seed = surf_parse_get_double(A_surfxml_random_seed);
1086
1087   double res = 0;
1088   int i = 0;
1089   random_data_t random = xbt_new0(s_random_data_t, 1);
1090   char *tmpbuf;
1091
1092   xbt_dynar_t radical_elements;
1093   unsigned int iter;
1094   char *groups;
1095   int start, end;
1096   xbt_dynar_t radical_ends;
1097
1098   random->generator = A_surfxml_random_generator;
1099   random->seed = seed;
1100   random->min = min;
1101   random->max = max;
1102
1103   /* Check user stupidities */
1104   if (max < min)
1105     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1106   if (mean < min)
1107     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1108   if (mean > max)
1109     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1110
1111   /* normalize the mean and standard deviation before storing */
1112   random->mean = (mean - min) / (max - min);
1113   random->std = std / (max - min);
1114
1115   if (random->mean * (1 - random->mean) < random->std * random->std)
1116     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1117            random->mean, random->std);
1118
1119   XBT_DEBUG
1120       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1121        random_id, random->min, random->max, random->mean, random->std,
1122        random->generator, random->seed, random_radical);
1123
1124   if (xbt_dict_size(random_value) == 0)
1125     random_value = xbt_dict_new();
1126
1127   if (!strcmp(random_radical, "")) {
1128     res = random_generate(random);
1129     rd_value = bprintf("%f", res);
1130     xbt_dict_set(random_value, random_id, rd_value, free);
1131   } else {
1132     radical_elements = xbt_str_split(random_radical, ",");
1133     xbt_dynar_foreach(radical_elements, iter, groups) {
1134       radical_ends = xbt_str_split(groups, "-");
1135       switch (xbt_dynar_length(radical_ends)) {
1136       case 1:
1137         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1138                    "Custom Random '%s' already exists !", random_id);
1139         res = random_generate(random);
1140         tmpbuf =
1141             bprintf("%s%d", random_id,
1142                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1143         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1144         xbt_free(tmpbuf);
1145         break;
1146
1147       case 2:
1148         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1149         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1150         for (i = start; i <= end; i++) {
1151           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1152                      "Custom Random '%s' already exists !", bprintf("%s%d",
1153                                                                     random_id,
1154                                                                     i));
1155           res = random_generate(random);
1156           tmpbuf = bprintf("%s%d", random_id, i);
1157           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1158           xbt_free(tmpbuf);
1159         }
1160         break;
1161       default:
1162         XBT_INFO("Malformed radical");
1163         break;
1164       }
1165       res = random_generate(random);
1166       rd_name = bprintf("%s_router", random_id);
1167       rd_value = bprintf("%f", res);
1168       xbt_dict_set(random_value, rd_name, rd_value, free);
1169
1170       xbt_dynar_free(&radical_ends);
1171     }
1172     free(rd_name);
1173     xbt_dynar_free(&radical_elements);
1174   }
1175 }
1176
1177 void routing_register_callbacks()
1178 {
1179   sg_platf_host_add_cb(parse_S_host);
1180   sg_platf_router_add_cb(parse_S_router);
1181
1182   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1183
1184   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1185   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1186   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1187                        &routing_parse_S_bypassRoute);
1188
1189   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1190
1191   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1192   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1193   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1194                        &routing_parse_E_bypassRoute);
1195
1196   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1197
1198   sg_platf_peer_add_cb(routing_parse_peer);
1199   sg_platf_postparse_add_cb(routing_parse_postparse);
1200
1201 #ifdef HAVE_TRACING
1202   instr_routing_define_callbacks();
1203 #endif
1204 }
1205
1206 /**
1207  * \brief Recursive function for finalize
1208  *
1209  * \param rc the source host name
1210  *
1211  * This fuction is call by "finalize". It allow to finalize the
1212  * AS or routing components. It delete all the structures.
1213  */
1214 static void finalize_rec(AS_t as) {
1215   xbt_dict_cursor_t cursor = NULL;
1216   char *key;
1217   AS_t elem;
1218
1219   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1220     finalize_rec(elem);
1221   }
1222
1223   as->finalize(as);
1224 }
1225
1226 /** \brief Frees all memory allocated by the routing module */
1227 void routing_exit(void) {
1228   if (!global_routing)
1229     return;
1230   finalize_rec(global_routing->root);
1231   xbt_free(global_routing);
1232 }