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 /**
  16  * @ingroup SURF_build_api
  17  * @brief A library containing all known workstations
  18  */
  19 xbt_lib_t host_lib;
  20
  21 int ROUTING_HOST_LEVEL;         //Routing level
  22 int SURF_CPU_LEVEL;             //Surf cpu level
  23 int SURF_WKS_LEVEL;             //Surf workstation level
  24 int SIMIX_HOST_LEVEL;           //Simix level
  25 int MSG_HOST_LEVEL;             //Msg level
  26 int SD_HOST_LEVEL;              //Simdag level
  27 int COORD_HOST_LEVEL=0;         //Coordinates level
  28 int NS3_HOST_LEVEL;             //host node for ns3
  29
  30 xbt_dict_t watched_hosts_lib;
  31
  32 /**
  33  * @ingroup SURF_build_api
  34  * @brief A library containing all known links
  35  */
  36 xbt_lib_t link_lib;
  37 int SD_LINK_LEVEL;              //Simdag level
  38 int SURF_LINK_LEVEL;            //Surf level
  39 int NS3_LINK_LEVEL;             //link for ns3
  40
  41 xbt_lib_t as_router_lib;
  42 int ROUTING_ASR_LEVEL;          //Routing level
  43 int COORD_ASR_LEVEL;            //Coordinates level
  44 int NS3_ASR_LEVEL;              //host node for ns3
  45
  46 static xbt_dict_t random_value = NULL;
  47
  48 /** @brief Retrieve a routing edge from its name
  49  *
  50  * Routing edges are either CPU/workstation and routers, whatever
  51  */
  52 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  53     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  54     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  55   return net_elm;
  56 }
  57
  58 /* Global vars */
  59 routing_platf_t routing_platf = NULL;
  60 AS_t current_routing = NULL;
  61
  62 /* global parse functions */
  63 xbt_dynar_t parsed_link_list = NULL;   /* temporary store of current list link of a route */
  64 extern xbt_dynar_t mount_list;
  65
  66 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  67
  68 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  69 static void routing_parse_Srandom(void);        /* random bypass */
  70
  71 static void routing_parse_postparse(void);
  72
  73 /* this lines are only for replace use like index in the model table */
  74 typedef enum {
  75   SURF_MODEL_FULL = 0,
  76   SURF_MODEL_FLOYD,
  77   SURF_MODEL_DIJKSTRA,
  78   SURF_MODEL_DIJKSTRACACHE,
  79   SURF_MODEL_NONE,
  80   SURF_MODEL_RULEBASED,
  81   SURF_MODEL_VIVALDI,
  82   SURF_MODEL_CLUSTER
  83 } e_routing_types;
  84
  85 struct s_model_type routing_models[] = {
  86   {"Full",
  87    "Full routing data (fast, large memory requirements, fully expressive)",
  88    model_full_create, model_full_end},
  89   {"Floyd",
  90    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  91    model_floyd_create, model_floyd_end},
  92   {"Dijkstra",
  93    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  94    model_dijkstra_create, model_dijkstra_both_end},
  95   {"DijkstraCache",
  96    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  97    model_dijkstracache_create, model_dijkstra_both_end},
  98   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  99    model_none_create,  NULL},
 100   {"RuleBased", "Rule-Based routing data (...)",
 101    model_rulebased_create, NULL},
 102   {"Vivaldi", "Vivaldi routing",
 103    model_vivaldi_create, NULL},
 104   {"Cluster", "Cluster routing",
 105    model_cluster_create, NULL},
 106   {NULL, NULL, NULL, NULL}
 107 };
 108
 109 /**
 110  * \brief Add a "host_link" to the network element list
 111  */
 112 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 113 {
 114   sg_routing_edge_t info = NULL;
 115   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 116   xbt_assert(info, "Host '%s' not found!",host->id);
 117   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 118       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 119       "You have to be in model Cluster to use tag host_link!");
 120
 121   s_surf_parsing_link_up_down_t link_up_down;
 122   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 123   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 124
 125   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 126   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 127
 128   if(!current_routing->link_up_down_list)
 129     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 130
 131   // If dynar is is greater than edge id and if the host_link is already defined
 132   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 133       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 134     xbt_die("Host_link for '%s' is already defined!",host->id);
 135
 136   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 137   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 138 }
 139
 140 /**
 141  * \brief Add a "host" to the network element list
 142  */
 143 static void parse_S_host(sg_platf_host_cbarg_t host)
 144 {
 145   sg_routing_edge_t info = NULL;
 146   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 147     current_routing->hierarchy = SURF_ROUTING_BASE;
 148   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 149              "Reading a host, processing unit \"%s\" already exists", host->id);
 150
 151   info = xbt_new0(s_network_element_t, 1);
 152   info->rc_component = current_routing;
 153   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 154   info->name = xbt_strdup(host->id);
 155   info->id = current_routing->parse_PU(current_routing, (void *) info);
 156   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 157   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 158
 159   if(mount_list){
 160     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 161     mount_list = NULL;
 162   }
 163
 164   if (host->coord && strcmp(host->coord, "")) {
 165     unsigned int cursor;
 166     char*str;
 167
 168     if (!COORD_HOST_LEVEL)
 169       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 170     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 171     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 172     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 173     xbt_dynar_foreach(ctn_str,cursor, str) {
 174       double val = atof(str);
 175       xbt_dynar_push(ctn,&val);
 176     }
 177     xbt_dynar_shrink(ctn, 0);
 178     xbt_dynar_free(&ctn_str);
 179     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 180     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 181   }
 182 }
 183
 184 /**
 185  * \brief Add a "router" to the network element list
 186  */
 187 static void parse_S_router(sg_platf_router_cbarg_t router)
 188 {
 189   sg_routing_edge_t info = NULL;
 190   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 191     current_routing->hierarchy = SURF_ROUTING_BASE;
 192   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 193              "Reading a router, processing unit \"%s\" already exists",
 194              router->id);
 195
 196   info = xbt_new0(s_network_element_t, 1);
 197   info->rc_component = current_routing;
 198   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 199   info->name = xbt_strdup(router->id);
 200   info->id = current_routing->parse_PU(current_routing, (void *) info);
 201   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 202   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 203
 204   if (router->coord && strcmp(router->coord, "")) {
 205     unsigned int cursor;
 206     char*str;
 207
 208     if (!COORD_ASR_LEVEL)
 209       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 210     /* Pre-parse the host coordinates */
 211     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 212     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 213     xbt_dynar_foreach(ctn_str,cursor, str) {
 214       double val = atof(str);
 215       xbt_dynar_push(ctn,&val);
 216     }
 217     xbt_dynar_shrink(ctn, 0);
 218     xbt_dynar_free(&ctn_str);
 219     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 220     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 221   }
 222 }
 223
 224 /**
 225  * \brief Store the route by calling the set_route function of the current routing component
 226  */
 227 static void parse_E_route(sg_platf_route_cbarg_t route)
 228 {
 229   route_t created_route = xbt_new0(s_route_t, 1);
 230   created_route->link_list = parsed_link_list;
 231
 232   xbt_assert(current_routing->parse_route,
 233              "no defined method \"set_route\" in \"%s\"",
 234              current_routing->name);
 235
 236   current_routing->parse_route(current_routing,
 237       route->src, route->dst, created_route);
 238   generic_free_route(created_route);
 239   parsed_link_list = NULL;
 240 }
 241
 242 /**
 243  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 244  */
 245 static void parse_E_ASroute(sg_platf_ASroute_cbarg_t ASroute)
 246 {
 247   route_t e_route = xbt_new0(s_route_t, 1);
 248   e_route->link_list = parsed_link_list;
 249
 250   if (!strcmp(current_routing->model_desc->name,"RuleBased")) {
 251     // DIRTY PERL HACK AHEAD: with the rulebased routing, the {src,dst}_gateway fields
 252     // store the provided name instead of the entity directly (model_rulebased_parse_ASroute knows)
 253     //
 254     // This is because the user will provide something like "^AS_(.*)$" instead of the proper name of a given entity
 255     e_route->src_gateway = (sg_routing_edge_t) ASroute->gw_src;
 256     e_route->dst_gateway = (sg_routing_edge_t) ASroute->gw_dst;
 257   } else {
 258     e_route->src_gateway = sg_routing_edge_by_name_or_null(ASroute->gw_src);
 259     e_route->dst_gateway = sg_routing_edge_by_name_or_null(ASroute->gw_dst);
 260   }
 261   xbt_assert(current_routing->parse_ASroute,
 262              "no defined method \"set_ASroute\" in \"%s\"",
 263              current_routing->name);
 264   current_routing->parse_ASroute(current_routing, ASroute->src, ASroute->dst, e_route);
 265   generic_free_route(e_route);
 266   parsed_link_list = NULL;
 267 }
 268
 269 /**
 270  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 271  */
 272 static void parse_E_bypassRoute(sg_platf_bypassRoute_cbarg_t route)
 273 {
 274   route_t e_route = xbt_new0(s_route_t, 1);
 275   e_route->link_list = parsed_link_list;
 276
 277   xbt_assert(current_routing->parse_bypassroute,
 278              "Bypassing mechanism not implemented by routing '%s'",
 279              current_routing->name);
 280
 281   current_routing->parse_bypassroute(current_routing, route->src, route->dst, e_route);
 282   parsed_link_list = NULL;
 283 }
 284
 285 /**
 286  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 287  */
 288 static void parse_E_bypassASroute(sg_platf_bypassASroute_cbarg_t ASroute)
 289 {
 290   route_t e_route = xbt_new0(s_route_t, 1);
 291   e_route->link_list = parsed_link_list;
 292   e_route->src_gateway = sg_routing_edge_by_name_or_null(ASroute->gw_src);
 293   e_route->dst_gateway = sg_routing_edge_by_name_or_null(ASroute->gw_dst);
 294   xbt_assert(current_routing->parse_bypassroute,
 295              "Bypassing mechanism not implemented by routing '%s'",
 296              current_routing->name);
 297   current_routing->parse_bypassroute(current_routing, ASroute->src, ASroute->dst, e_route);
 298   parsed_link_list = NULL;
 299 }
 300
 301 /**
 302  * \brief Set a new link on the actual list of link for a route or ASroute from XML
 303  */
 304
 305 static void routing_parse_link_ctn(sg_platf_linkctn_cbarg_t linkctn)
 306 {
 307   char *link_id;
 308   switch (linkctn->direction) {
 309   case SURF_LINK_DIRECTION_NONE:
 310     link_id = xbt_strdup(linkctn->id);
 311     break;
 312   case SURF_LINK_DIRECTION_UP:
 313     link_id = bprintf("%s_UP", linkctn->id);
 314     break;
 315   case SURF_LINK_DIRECTION_DOWN:
 316     link_id = bprintf("%s_DOWN", linkctn->id);
 317     break;
 318   }
 319
 320   if(parsed_link_list == NULL)
 321     parsed_link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 322
 323   xbt_dynar_push(parsed_link_list, &link_id);
 324 }
 325
 326 /**
 327  * \brief Make a new routing component to the platform
 328  *
 329  * Add a new autonomous system to the platform. Any elements (such as host,
 330  * router or sub-AS) added after this call and before the corresponding call
 331  * to sg_platf_new_AS_close() will be added to this AS.
 332  *
 333  * Once this function was called, the configuration concerning the used
 334  * models cannot be changed anymore.
 335  *
 336  * @param AS_id name of this autonomous system. Must be unique in the platform
 337  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 338  */
 339 void routing_AS_begin(const char *AS_id, int wanted_routing_type)
 340 {
 341   AS_t new_as;
 342   routing_model_description_t model = NULL;
 343
 344   xbt_assert(!xbt_lib_get_or_null
 345              (as_router_lib, AS_id, ROUTING_ASR_LEVEL),
 346              "The AS \"%s\" already exists", AS_id);
 347
 348   /* search the routing model */
 349   switch(wanted_routing_type){
 350     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 351     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 352     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 353     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 354     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 355     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 356     case A_surfxml_AS_routing_RuleBased:     model = &routing_models[SURF_MODEL_RULEBASED];break;
 357     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 358   }
 359
 360   /* make a new routing component */
 361   new_as = (AS_t) model->create();
 362   new_as->model_desc = model;
 363   new_as->hierarchy = SURF_ROUTING_NULL;
 364   new_as->name = xbt_strdup(AS_id);
 365
 366   sg_routing_edge_t info = NULL;
 367   info = xbt_new0(s_network_element_t, 1);
 368
 369   if (current_routing == NULL && routing_platf->root == NULL) {
 370
 371     /* it is the first one */
 372     new_as->routing_father = NULL;
 373     routing_platf->root = new_as;
 374     info->id = -1;
 375   } else if (current_routing != NULL && routing_platf->root != NULL) {
 376
 377     xbt_assert(!xbt_dict_get_or_null
 378                (current_routing->routing_sons, AS_id),
 379                "The AS \"%s\" already exists", AS_id);
 380     /* it is a part of the tree */
 381     new_as->routing_father = current_routing;
 382     /* set the father behavior */
 383     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 384       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 385     /* add to the sons dictionary */
 386     xbt_dict_set(current_routing->routing_sons, AS_id,
 387                  (void *) new_as, NULL);
 388     /* add to the father element list */
 389     info->id = current_routing->parse_AS(current_routing, (void *) info);
 390   } else {
 391     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 392   }
 393
 394   info->rc_component = new_as->routing_father;
 395   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 396   info->name = new_as->name;
 397
 398   xbt_lib_set(as_router_lib, new_as->name, ROUTING_ASR_LEVEL,
 399               (void *) info);
 400   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 401
 402   /* set the new current component of the tree */
 403   current_routing = new_as;
 404   current_routing->net_elem = info;
 405
 406 }
 407
 408 /**
 409  * \brief Specify that the current description of AS is finished
 410  *
 411  * Once you've declared all the content of your AS, you have to close
 412  * it with this call. Your AS is not usable until you call this function.
 413  *
 414  * @fixme: this call is not as robust as wanted: bad things WILL happen
 415  * if you call it twice for the same AS, or if you forget calling it, or
 416  * even if you add stuff to a closed AS
 417  *
 418  */
 419 void routing_AS_end()
 420 {
 421
 422   if (current_routing == NULL) {
 423     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 424   } else {
 425     if (current_routing->model_desc->end)
 426       current_routing->model_desc->end(current_routing);
 427     current_routing = current_routing->routing_father;
 428   }
 429 }
 430
 431 /* Aux Business methods */
 432
 433 /**
 434  * \brief Get the AS father and the first elements of the chain
 435  *
 436  * \param src the source host name
 437  * \param dst the destination host name
 438  *
 439  * Get the common father of the to processing units, and the first different
 440  * father in the chain
 441  */
 442 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 443                             AS_t * res_father,
 444                             AS_t * res_src,
 445                             AS_t * res_dst)
 446 {
 447   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 448 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 449   AS_t src_as, dst_as;
 450   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 451   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 452   int index_src = 0;
 453   int index_dst = 0;
 454   AS_t current;
 455   AS_t current_src;
 456   AS_t current_dst;
 457   AS_t father;
 458
 459   /* (1) find the as where the src and dst are located */
 460   sg_routing_edge_t src_data = src;
 461   sg_routing_edge_t dst_data = dst;
 462   src_as = src_data->rc_component;
 463   dst_as = dst_data->rc_component;
 464 #ifndef NDEBUG
 465   char* src_name = src_data->name;
 466   char* dst_name = dst_data->name;
 467 #endif
 468
 469   xbt_assert(src_as && dst_as,
 470              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 471
 472   /* (2) find the path to the root routing component */
 473   for (current = src_as; current != NULL; current = current->routing_father) {
 474     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 475       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 476     path_src[index_src++] = current;
 477   }
 478   for (current = dst_as; current != NULL; current = current->routing_father) {
 479     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 480       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 481     path_dst[index_dst++] = current;
 482   }
 483
 484   /* (3) find the common father */
 485   do {
 486     current_src = path_src[--index_src];
 487     current_dst = path_dst[--index_dst];
 488   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 489
 490   /* (4) they are not in the same routing component, make the path */
 491   if (current_src == current_dst)
 492     father = current_src;
 493   else
 494     father = path_src[index_src + 1];
 495
 496   /* (5) result generation */
 497   *res_father = father;         /* first the common father of src and dst */
 498   *res_src = current_src;       /* second the first different father of src */
 499   *res_dst = current_dst;       /* three  the first different father of dst */
 500
 501 #undef ELEMENTS_FATHER_MAXDEPTH
 502 }
 503
 504 /* Global Business methods */
 505
 506 /**
 507  * \brief Recursive function for get_route_latency
 508  *
 509  * \param src the source host name
 510  * \param dst the destination host name
 511  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 512  * \param *latency the latency, if needed
 513  *
 514  * This function is called by "get_route" and "get_latency". It allows to walk
 515  * recursively through the ASes tree.
 516  */
 517 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 518                                    xbt_dynar_t * links, double *latency)
 519 {
 520   s_route_t route;
 521   memset(&route,0,sizeof(route));
 522
 523   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 524   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 525
 526   /* Find how src and dst are interconnected */
 527   AS_t common_father, src_father, dst_father;
 528   elements_father(src, dst, &common_father, &src_father, &dst_father);
 529   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 530       common_father->name,src_father->name,dst_father->name);
 531
 532   /* Check whether a direct bypass is defined */
 533   route_t e_route_bypass = NULL;
 534   if (common_father->get_bypass_route)
 535     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 536
 537   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 538   if (e_route_bypass) {
 539     xbt_dynar_merge(links, &e_route_bypass->link_list);
 540     generic_free_route(e_route_bypass);
 541     return;
 542   }
 543
 544   /* If src and dst are in the same AS, life is good */
 545   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 546     route.link_list = *links;
 547     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 548     // if vivaldi latency+=vivaldi(src,dst)
 549     return;
 550   }
 551
 552   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 553
 554   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 555   // Find the net_card corresponding to father
 556   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 557   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 558
 559   common_father->get_route_and_latency(common_father,
 560                                        src_father_net_elm, dst_father_net_elm,
 561                                        &route, latency);
 562
 563   xbt_assert((route.src_gateway != NULL) && (route.dst_gateway != NULL),
 564       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 565
 566   sg_routing_edge_t src_gateway_net_elm = route.src_gateway;
 567   sg_routing_edge_t dst_gateway_net_elm = route.dst_gateway;
 568
 569   /* If source gateway is not our source, we have to recursively find our way up to this point */
 570   if (src != src_gateway_net_elm)
 571     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 572   xbt_dynar_merge(links, &route.link_list);
 573
 574   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 575   if (dst_gateway_net_elm != dst)
 576     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 577
 578   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 579 }
 580
 581 /**
 582  * \brief Find a route between hosts
 583  *
 584  * \param src the network_element_t for src host
 585  * \param dst the network_element_t for dst host
 586  * \param route where to store the list of links.
 587  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 588  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 589  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 590  * \pre route!=NULL
 591  *
 592  * walk through the routing components tree and find a route between hosts
 593  * by calling the differents "get_route" functions in each routing component.
 594  */
 595 void routing_get_route_and_latency(sg_routing_edge_t src,
 596                                    sg_routing_edge_t dst,
 597                                    xbt_dynar_t * route, double *latency)
 598 {
 599   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 600   if (!*route) {
 601     xbt_dynar_reset(routing_platf->last_route);
 602     *route = routing_platf->last_route;
 603   }
 604
 605   _get_route_and_latency(src, dst, route, latency);
 606
 607   xbt_assert(!latency || *latency >= 0.0,
 608              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 609 }
 610
 611 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 612 {
 613   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 614
 615   //adding my one link routes
 616   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 617   if (onelink_mine)
 618     xbt_dynar_merge(&ret,&onelink_mine);
 619
 620   //recursing
 621   char *key;
 622   xbt_dict_cursor_t cursor = NULL;
 623   AS_t rc_child;
 624   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 625     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 626     if (onelink_child)
 627       xbt_dynar_merge(&ret,&onelink_child);
 628   }
 629   return ret;
 630 }
 631
 632 static xbt_dynar_t get_onelink_routes(void)
 633 {
 634   return recursive_get_onelink_routes(routing_platf->root);
 635 }
 636
 637 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 638 {
 639   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 640   if (rc)
 641     return rc->rc_type;
 642
 643   return SURF_NETWORK_ELEMENT_NULL;
 644 }
 645
 646 /**
 647  * \brief Generic method: create the global routing schema
 648  *
 649  * Make a global routing structure and set all the parsing functions.
 650  */
 651 void routing_model_create( void *loopback)
 652 {
 653   /* config the uniq global routing */
 654   routing_platf = xbt_new0(s_routing_platf_t, 1);
 655   routing_platf->root = NULL;
 656   routing_platf->get_onelink_routes = get_onelink_routes;
 657   routing_platf->loopback = loopback;
 658   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 659   /* no current routing at moment */
 660   current_routing = NULL;
 661 }
 662
 663
 664 /* ************************************************** */
 665 /* ********** PATERN FOR NEW ROUTING **************** */
 666
 667 /* The minimal configuration of a new routing model need the next functions,
 668  * also you need to set at the start of the file, the new model in the model
 669  * list. Remember keep the null ending of the list.
 670  */
 671 /*** Routing model structure ***/
 672 // typedef struct {
 673 //   s_routing_component_t generic_routing;
 674 //   /* things that your routing model need */
 675 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 676
 677 /*** Parse routing model functions ***/
 678 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 679 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 680 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 681 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 682 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 683
 684 /*** Business methods ***/
 685 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 686 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 687 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 688
 689 /*** Creation routing model functions ***/
 690 // static void* model_NEW_create(void) {
 691 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 692 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 693 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 694 //   new_component->generic_routing.set_route = model_NEW_set_route;
 695 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 696 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 697 //   new_component->generic_routing.get_route = NEW_get_route;
 698 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 699 //   new_component->generic_routing.finalize = NEW_finalize;
 700 //   /* initialization of internal structures */
 701 //   return new_component;
 702 // } /* mandatory */
 703 // static void  model_NEW_load(void) {}   /* mandatory */
 704 // static void  model_NEW_unload(void) {} /* mandatory */
 705 // static void  model_NEW_end(void) {}    /* mandatory */
 706
 707 /* ************************************************************************** */
 708 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 709
 710 void routing_cluster_add_backbone(void* bb) {
 711   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 712         "You have to be in model Cluster to use tag backbone!");
 713   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 714   ((as_cluster_t)current_routing)->backbone = bb;
 715   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 716 }
 717
 718 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 719 {
 720   int start, end, i;
 721   char *groups , *host_id , *link_id = NULL;
 722   unsigned int iter;
 723   xbt_dynar_t radical_elements;
 724   xbt_dynar_t radical_ends;
 725
 726   //Make all hosts
 727   radical_elements = xbt_str_split(cabinet->radical, ",");
 728   xbt_dynar_foreach(radical_elements, iter, groups) {
 729
 730     radical_ends = xbt_str_split(groups, "-");
 731     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 732
 733     switch (xbt_dynar_length(radical_ends)) {
 734     case 1:
 735       end = start;
 736       break;
 737     case 2:
 738       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 739       break;
 740     default:
 741       surf_parse_error("Malformed radical");
 742       break;
 743     }
 744     s_sg_platf_host_cbarg_t host;
 745     memset(&host, 0, sizeof(host));
 746     host.initial_state = SURF_RESOURCE_ON;
 747     host.power_peak = cabinet->power;
 748     host.power_scale = 1.0;
 749     host.core_amount = 1;
 750
 751     s_sg_platf_link_cbarg_t link;
 752     memset(&link, 0, sizeof(link));
 753     link.state = SURF_RESOURCE_ON;
 754     link.policy = SURF_LINK_FULLDUPLEX;
 755     link.latency = cabinet->lat;
 756     link.bandwidth = cabinet->bw;
 757
 758     s_sg_platf_host_link_cbarg_t host_link;
 759     memset(&host_link, 0, sizeof(host_link));
 760
 761     for (i = start; i <= end; i++) {
 762       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 763       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 764       host.id = host_id;
 765       link.id = link_id;
 766       sg_platf_new_host(&host);
 767       sg_platf_new_link(&link);
 768
 769       char* link_up = bprintf("%s_UP",link_id);
 770       char* link_down = bprintf("%s_DOWN",link_id);
 771       host_link.id = host_id;
 772       host_link.link_up = link_up;
 773       host_link.link_down= link_down;
 774       sg_platf_new_host_link(&host_link);
 775
 776       free(host_id);
 777       free(link_id);
 778       free(link_up);
 779       free(link_down);
 780     }
 781
 782     xbt_dynar_free(&radical_ends);
 783   }
 784   xbt_dynar_free(&radical_elements);
 785 }
 786
 787 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 788 {
 789   char *host_id, *groups, *link_id = NULL;
 790   xbt_dict_t patterns = NULL;
 791
 792   s_sg_platf_host_cbarg_t host;
 793   s_sg_platf_link_cbarg_t link;
 794
 795   unsigned int iter;
 796   int start, end, i;
 797   xbt_dynar_t radical_elements;
 798   xbt_dynar_t radical_ends;
 799
 800   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 801       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 802     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 803     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 804     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 805     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 806   }
 807
 808   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 809   sg_platf_new_AS_begin(cluster->id, A_surfxml_AS_routing_Cluster);
 810
 811   current_routing->link_up_down_list
 812             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 813
 814   //Make all hosts
 815   radical_elements = xbt_str_split(cluster->radical, ",");
 816   xbt_dynar_foreach(radical_elements, iter, groups) {
 817
 818     radical_ends = xbt_str_split(groups, "-");
 819     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 820
 821     switch (xbt_dynar_length(radical_ends)) {
 822     case 1:
 823       end = start;
 824       break;
 825     case 2:
 826       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 827       break;
 828     default:
 829       surf_parse_error("Malformed radical");
 830       break;
 831     }
 832     for (i = start; i <= end; i++) {
 833       host_id =
 834           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 835       link_id = bprintf("%s_link_%d", cluster->id, i);
 836
 837       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 838
 839       memset(&host, 0, sizeof(host));
 840       host.id = host_id;
 841       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 842         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 843         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 844         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 845         host.power_trace = tmgr_trace_new_from_file(avail_file);
 846         xbt_free(avail_file);
 847       } else {
 848         XBT_DEBUG("\tavailability_file=\"\"");
 849       }
 850
 851       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 852         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 853         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 854         host.state_trace = tmgr_trace_new_from_file(avail_file);
 855         xbt_free(avail_file);
 856       } else {
 857         XBT_DEBUG("\tstate_file=\"\"");
 858       }
 859
 860       host.power_peak = cluster->power;
 861       host.power_scale = 1.0;
 862       host.core_amount = cluster->core_amount;
 863       host.initial_state = SURF_RESOURCE_ON;
 864       host.coord = "";
 865       sg_platf_new_host(&host);
 866       XBT_DEBUG("</host>");
 867
 868       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 869                 cluster->bw, cluster->lat);
 870
 871       memset(&link, 0, sizeof(link));
 872       link.id = link_id;
 873       link.bandwidth = cluster->bw;
 874       link.latency = cluster->lat;
 875       link.state = SURF_RESOURCE_ON;
 876       link.policy = cluster->sharing_policy;
 877       sg_platf_new_link(&link);
 878
 879       s_surf_parsing_link_up_down_t info;
 880
 881       if (link.policy == SURF_LINK_FULLDUPLEX) {
 882         char *tmp_link = bprintf("%s_UP", link_id);
 883         info.link_up =
 884             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 885         free(tmp_link);
 886         tmp_link = bprintf("%s_DOWN", link_id);
 887         info.link_down =
 888             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 889         free(tmp_link);
 890       } else {
 891         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 892         info.link_down = info.link_up;
 893       }
 894       xbt_dynar_push(current_routing->link_up_down_list,&info);
 895       xbt_free(link_id);
 896       xbt_free(host_id);
 897     }
 898
 899     xbt_dynar_free(&radical_ends);
 900   }
 901   xbt_dynar_free(&radical_elements);
 902
 903   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 904   // and it's very useful to connect clusters together
 905   XBT_DEBUG(" ");
 906   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 907   char *newid = NULL;
 908   s_sg_platf_router_cbarg_t router;
 909   memset(&router, 0, sizeof(router));
 910   router.id = cluster->router_id;
 911   router.coord = "";
 912   if (!router.id || !strcmp(router.id, ""))
 913     router.id = newid =
 914         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 915                 cluster->suffix);
 916   sg_platf_new_router(&router);
 917   free(newid);
 918
 919   //Make the backbone
 920   if ((cluster->bb_bw != 0) && (cluster->bb_lat != 0)) {
 921     char *link_backbone = bprintf("%s_backbone", cluster->id);
 922     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 923               cluster->bb_bw, cluster->bb_lat);
 924
 925     memset(&link, 0, sizeof(link));
 926     link.id = link_backbone;
 927     link.bandwidth = cluster->bb_bw;
 928     link.latency = cluster->bb_lat;
 929     link.state = SURF_RESOURCE_ON;
 930     link.policy = cluster->bb_sharing_policy;
 931
 932     sg_platf_new_link(&link);
 933
 934     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 935
 936     free(link_backbone);
 937   }
 938
 939   XBT_DEBUG("</AS>");
 940   sg_platf_new_AS_end();
 941   XBT_DEBUG(" ");
 942   xbt_dict_free(&patterns); // no op if it were never set
 943 }
 944
 945 static void routing_parse_postparse(void) {
 946   xbt_dict_free(&random_value);
 947 }
 948
 949 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 950 {
 951   char *host_id = NULL;
 952   char *link_id;
 953
 954   XBT_DEBUG(" ");
 955   host_id = HOST_PEER(peer->id);
 956   link_id = LINK_PEER(peer->id);
 957
 958   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 959   s_sg_platf_host_cbarg_t host;
 960   memset(&host, 0, sizeof(host));
 961   host.initial_state = SURF_RESOURCE_ON;
 962   host.id = host_id;
 963   host.power_peak = peer->power;
 964   host.power_scale = 1.0;
 965   host.power_trace = peer->availability_trace;
 966   host.state_trace = peer->state_trace;
 967   host.core_amount = 1;
 968   host.coord = peer->coord;
 969   sg_platf_new_host(&host);
 970
 971   s_sg_platf_link_cbarg_t link;
 972   memset(&link, 0, sizeof(link));
 973   link.state = SURF_RESOURCE_ON;
 974   link.policy = SURF_LINK_SHARED;
 975   link.latency = peer->lat;
 976
 977   char* link_up = bprintf("%s_UP",link_id);
 978   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
 979             peer->bw_out, peer->lat);
 980   link.id = link_up;
 981   link.bandwidth = peer->bw_out;
 982   sg_platf_new_link(&link);
 983
 984   char* link_down = bprintf("%s_DOWN",link_id);
 985   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
 986             peer->bw_in, peer->lat);
 987   link.id = link_down;
 988   link.bandwidth = peer->bw_in;
 989   sg_platf_new_link(&link);
 990
 991   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 992   s_sg_platf_host_link_cbarg_t host_link;
 993   memset(&host_link, 0, sizeof(host_link));
 994   host_link.id = host_id;
 995   host_link.link_up = link_up;
 996   host_link.link_down= link_down;
 997   sg_platf_new_host_link(&host_link);
 998
 999   XBT_DEBUG(" ");
1000
1001   //xbt_dynar_free(&tab_elements_num);
1002   free(host_id);
1003   free(link_id);
1004   free(link_up);
1005   free(link_down);
1006 }
1007
1008 static void routing_parse_Srandom(void)
1009 {
1010   double mean, std, min, max, seed;
1011   char *random_id = A_surfxml_random_id;
1012   char *random_radical = A_surfxml_random_radical;
1013   char *rd_name = NULL;
1014   char *rd_value;
1015   mean = surf_parse_get_double(A_surfxml_random_mean);
1016   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1017   min = surf_parse_get_double(A_surfxml_random_min);
1018   max = surf_parse_get_double(A_surfxml_random_max);
1019   seed = surf_parse_get_double(A_surfxml_random_seed);
1020
1021   double res = 0;
1022   int i = 0;
1023   random_data_t random = xbt_new0(s_random_data_t, 1);
1024   char *tmpbuf;
1025
1026   xbt_dynar_t radical_elements;
1027   unsigned int iter;
1028   char *groups;
1029   int start, end;
1030   xbt_dynar_t radical_ends;
1031
1032   switch (A_surfxml_random_generator) {
1033   case AU_surfxml_random_generator:
1034   case A_surfxml_random_generator_NONE:
1035     random->generator = NONE;
1036     break;
1037   case A_surfxml_random_generator_DRAND48:
1038     random->generator = DRAND48;
1039     break;
1040   case A_surfxml_random_generator_RAND:
1041     random->generator = RAND;
1042     break;
1043   case A_surfxml_random_generator_RNGSTREAM:
1044     random->generator = RNGSTREAM;
1045     break;
1046   default:
1047     surf_parse_error("Invalid random generator");
1048     break;
1049   }
1050   random->seed = seed;
1051   random->min = min;
1052   random->max = max;
1053
1054   /* Check user stupidities */
1055   if (max < min)
1056     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1057   if (mean < min)
1058     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1059   if (mean > max)
1060     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1061
1062   /* normalize the mean and standard deviation before storing */
1063   random->mean = (mean - min) / (max - min);
1064   random->std = std / (max - min);
1065
1066   if (random->mean * (1 - random->mean) < random->std * random->std)
1067     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1068            random->mean, random->std);
1069
1070   XBT_DEBUG
1071       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1072        random_id, random->min, random->max, random->mean, random->std,
1073        (int)random->generator, random->seed, random_radical);
1074
1075   if (!random_value)
1076     random_value = xbt_dict_new_homogeneous(free);
1077
1078   if (!strcmp(random_radical, "")) {
1079     res = random_generate(random);
1080     rd_value = bprintf("%f", res);
1081     xbt_dict_set(random_value, random_id, rd_value, NULL);
1082   } else {
1083     radical_elements = xbt_str_split(random_radical, ",");
1084     xbt_dynar_foreach(radical_elements, iter, groups) {
1085       radical_ends = xbt_str_split(groups, "-");
1086       switch (xbt_dynar_length(radical_ends)) {
1087       case 1:
1088         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1089                    "Custom Random '%s' already exists !", random_id);
1090         res = random_generate(random);
1091         tmpbuf =
1092             bprintf("%s%d", random_id,
1093                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1094         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1095         xbt_free(tmpbuf);
1096         break;
1097
1098       case 2:
1099         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1100         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1101         for (i = start; i <= end; i++) {
1102           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1103                      "Custom Random '%s' already exists !", bprintf("%s%d",
1104                                                                     random_id,
1105                                                                     i));
1106           res = random_generate(random);
1107           tmpbuf = bprintf("%s%d", random_id, i);
1108           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1109           xbt_free(tmpbuf);
1110         }
1111         break;
1112       default:
1113         XBT_CRITICAL("Malformed radical");
1114         break;
1115       }
1116       res = random_generate(random);
1117       rd_name = bprintf("%s_router", random_id);
1118       rd_value = bprintf("%f", res);
1119       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1120
1121       xbt_dynar_free(&radical_ends);
1122     }
1123     free(rd_name);
1124     xbt_dynar_free(&radical_elements);
1125   }
1126 }
1127
1128 void routing_register_callbacks()
1129 {
1130   sg_platf_host_add_cb(parse_S_host);
1131   sg_platf_router_add_cb(parse_S_router);
1132   sg_platf_host_link_add_cb(parse_S_host_link);
1133   sg_platf_route_add_cb(parse_E_route);
1134   sg_platf_ASroute_add_cb(parse_E_ASroute);
1135   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1136   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1137
1138   sg_platf_cluster_add_cb(routing_parse_cluster);
1139   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1140
1141   sg_platf_peer_add_cb(routing_parse_peer);
1142   sg_platf_postparse_add_cb(routing_parse_postparse);
1143
1144   sg_platf_linkctn_add_cb(routing_parse_link_ctn);
1145
1146   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1147   sg_platf_AS_end_add_cb(routing_AS_end);
1148   sg_platf_AS_begin_add_cb(routing_AS_begin);
1149
1150
1151
1152 #ifdef HAVE_TRACING
1153   instr_routing_define_callbacks();
1154 #endif
1155 }
1156
1157 /**
1158  * \brief Recursive function for finalize
1159  *
1160  * \param rc the source host name
1161  *
1162  * This fuction is call by "finalize". It allow to finalize the
1163  * AS or routing components. It delete all the structures.
1164  */
1165 static void finalize_rec(AS_t as) {
1166   xbt_dict_cursor_t cursor = NULL;
1167   char *key;
1168   AS_t elem;
1169
1170   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1171     finalize_rec(elem);
1172   }
1173
1174   as->finalize(as);
1175 }
1176
1177 /** \brief Frees all memory allocated by the routing module */
1178 void routing_exit(void) {
1179   if (!routing_platf)
1180     return;
1181   xbt_dynar_free(&routing_platf->last_route);
1182   finalize_rec(routing_platf->root);
1183   xbt_free(routing_platf);
1184 }