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_routing;
 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_routing = (AS_t) (*(model->create)) ();
 315   new_routing->routing = model;
 316   new_routing->hierarchy = SURF_ROUTING_NULL;
 317   new_routing->name = xbt_strdup(AS_id);
 318   new_routing->routing_sons = xbt_dict_new();
 319
 320   if (current_routing == NULL && global_routing->root == NULL) {
 321
 322     /* it is the first one */
 323     new_routing->routing_father = NULL;
 324     global_routing->root = new_routing;
 325
 326   } else if (current_routing != NULL && global_routing->root != NULL) {
 327
 328     xbt_assert(!xbt_dict_get_or_null
 329                (current_routing->routing_sons, AS_id),
 330                "The AS \"%s\" already exists", AS_id);
 331     /* it is a part of the tree */
 332     new_routing->routing_father = current_routing;
 333     /* set the father behavior */
 334     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 335       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 336     /* add to the sons dictionary */
 337     xbt_dict_set(current_routing->routing_sons, AS_id,
 338                  (void *) new_routing, NULL);
 339     /* add to the father element list */
 340     (*(current_routing->parse_AS)) (current_routing, AS_id);
 341   } else {
 342     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 343   }
 344   /* set the new current component of the tree */
 345   current_routing = new_routing;
 346 }
 347
 348 /**
 349  * \brief Specify that the current description of AS is finished
 350  *
 351  * Once you've declared all the content of your AS, you have to close
 352  * it with this call. Your AS is not usable until you call this function.
 353  *
 354  * @fixme: this call is not as robust as wanted: bad things WILL happen
 355  * if you call it twice for the same AS, or if you forget calling it, or
 356  * even if you add stuff to a closed AS
 357  *
 358  */
 359 void routing_AS_end()
 360 {
 361
 362   if (current_routing == NULL) {
 363     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 364   } else {
 365     network_element_info_t info = NULL;
 366     xbt_assert(!xbt_lib_get_or_null
 367                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
 368                "The AS \"%s\" already exists", current_routing->name);
 369     info = xbt_new0(s_network_element_info_t, 1);
 370     info->rc_component = current_routing->routing_father;
 371     info->rc_type = SURF_NETWORK_ELEMENT_AS;
 372     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
 373                 (void *) info);
 374
 375     if (current_routing->routing->end)
 376       (*(current_routing->routing->end)) (current_routing);
 377     current_routing = current_routing->routing_father;
 378   }
 379 }
 380
 381 /* Aux Business methods */
 382
 383 /**
 384  * \brief Get the AS father and the first elements of the chain
 385  *
 386  * \param src the source host name
 387  * \param dst the destination host name
 388  *
 389  * Get the common father of the to processing units, and the first different
 390  * father in the chain
 391  */
 392 static void elements_father(const char *src, const char *dst,
 393                             AS_t * res_father,
 394                             AS_t * res_src,
 395                             AS_t * res_dst)
 396 {
 397   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 398 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 399   AS_t src_as, dst_as;
 400   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 401   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 402   int index_src = 0;
 403   int index_dst = 0;
 404   AS_t current;
 405   AS_t current_src;
 406   AS_t current_dst;
 407   AS_t father;
 408
 409   /* (1) find the as where the src and dst are located */
 410   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
 411                                                         ROUTING_HOST_LEVEL);
 412   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
 413                                                         ROUTING_HOST_LEVEL);
 414   if (!src_data)
 415     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 416   if (!dst_data)
 417     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 418   src_as = src_data->rc_component;
 419   dst_as = dst_data->rc_component;
 420
 421   xbt_assert(src_as && dst_as,
 422              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
 423
 424   /* (2) find the path to the root routing component */
 425   for (current = src_as; current != NULL; current = current->routing_father) {
 426     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 427       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 428     path_src[index_src++] = current;
 429   }
 430   for (current = dst_as; current != NULL; current = current->routing_father) {
 431     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 432       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 433     path_dst[index_dst++] = current;
 434   }
 435
 436   /* (3) find the common father */
 437   do {
 438     current_src = path_src[--index_src];
 439     current_dst = path_dst[--index_dst];
 440   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 441
 442   /* (4) they are not in the same routing component, make the path */
 443   if (current_src == current_dst)
 444     father = current_src;
 445   else
 446     father = path_src[index_src + 1];
 447
 448   /* (5) result generation */
 449   *res_father = father;         /* first the common father of src and dst */
 450   *res_src = current_src;       /* second the first different father of src */
 451   *res_dst = current_dst;       /* three  the first different father of dst */
 452
 453 #undef ELEMENTS_FATHER_MAXDEPTH
 454 }
 455
 456 /* Global Business methods */
 457
 458 /**
 459  * \brief Recursive function for get_route_latency
 460  *
 461  * \param src the source host name
 462  * \param dst the destination host name
 463  * \param *e_route the route where the links are stored
 464  * \param *latency the latency, if needed
 465  *
 466  * This function is called by "get_route" and "get_latency". It allows to walk
 467  * recursively through the routing components tree.
 468  */
 469 static void _get_route_latency(const char *src, const char *dst,
 470                                xbt_dynar_t * route, double *latency)
 471 {
 472   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
 473   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 474
 475   AS_t common_father;
 476   AS_t src_father;
 477   AS_t dst_father;
 478   elements_father(src, dst, &common_father, &src_father, &dst_father);
 479
 480   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 481
 482     route_extended_t e_route = NULL;
 483     if (route) {
 484       e_route = common_father->get_route(common_father, src, dst);
 485       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
 486       *route = e_route->generic_route.link_list;
 487     }
 488     if (latency) {
 489       *latency = common_father->get_latency(common_father, src, dst, e_route);
 490       xbt_assert(*latency >= 0.0,
 491                  "latency error on route between \"%s\" and \"%s\"", src, dst);
 492     }
 493     if (e_route) {
 494       xbt_free(e_route->src_gateway);
 495       xbt_free(e_route->dst_gateway);
 496       xbt_free(e_route);
 497     }
 498
 499   } else {                      /* SURF_ROUTING_RECURSIVE */
 500
 501     route_extended_t e_route_bypass = NULL;
 502     if (common_father->get_bypass_route)
 503       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
 504
 505     xbt_assert(!latency || !e_route_bypass,
 506                "Bypass cannot work yet with get_latency");
 507
 508     route_extended_t e_route_cnt = e_route_bypass
 509         ? e_route_bypass : common_father->get_route(common_father,
 510                                                     src_father->name,
 511                                                     dst_father->name);
 512
 513     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
 514                src_father->name, dst_father->name);
 515
 516     xbt_assert((e_route_cnt->src_gateway == NULL) ==
 517                (e_route_cnt->dst_gateway == NULL),
 518                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
 519
 520     if (route) {
 521       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
 522     }
 523     if (latency) {
 524       *latency = common_father->get_latency(common_father,
 525                                             src_father->name, dst_father->name,
 526                                             e_route_cnt);
 527       xbt_assert(*latency >= 0.0,
 528                  "latency error on route between \"%s\" and \"%s\"",
 529                  src_father->name, dst_father->name);
 530     }
 531
 532     void *link;
 533     unsigned int cpt;
 534
 535     if (strcmp(src, e_route_cnt->src_gateway)) {
 536       double latency_src;
 537       xbt_dynar_t route_src;
 538
 539       _get_route_latency(src, e_route_cnt->src_gateway,
 540                          (route ? &route_src : NULL),
 541                          (latency ? &latency_src : NULL));
 542       if (route) {
 543         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
 544                    src, e_route_cnt->src_gateway);
 545         xbt_dynar_foreach(route_src, cpt, link) {
 546           xbt_dynar_push(*route, &link);
 547         }
 548         xbt_dynar_free(&route_src);
 549       }
 550       if (latency) {
 551         xbt_assert(latency_src >= 0.0,
 552                    "latency error on route between \"%s\" and \"%s\"",
 553                    src, e_route_cnt->src_gateway);
 554         *latency += latency_src;
 555       }
 556     }
 557
 558     if (route) {
 559       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
 560         xbt_dynar_push(*route, &link);
 561       }
 562     }
 563
 564     if (strcmp(e_route_cnt->dst_gateway, dst)) {
 565       double latency_dst;
 566       xbt_dynar_t route_dst;
 567
 568       _get_route_latency(e_route_cnt->dst_gateway, dst,
 569                          (route ? &route_dst : NULL),
 570                          (latency ? &latency_dst : NULL));
 571       if (route) {
 572         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
 573                    e_route_cnt->dst_gateway, dst);
 574         xbt_dynar_foreach(route_dst, cpt, link) {
 575           xbt_dynar_push(*route, &link);
 576         }
 577         xbt_dynar_free(&route_dst);
 578       }
 579       if (latency) {
 580         xbt_assert(latency_dst >= 0.0,
 581                    "latency error on route between \"%s\" and \"%s\"",
 582                    e_route_cnt->dst_gateway, dst);
 583         *latency += latency_dst;
 584       }
 585     }
 586
 587     generic_free_extended_route(e_route_cnt);
 588   }
 589 }
 590
 591 /**
 592  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
 593  */
 594 static void get_route_latency(const char *src, const char *dst,
 595                               xbt_dynar_t * route, double *latency, int cleanup)
 596 {
 597   static xbt_dynar_t last_route = NULL;
 598
 599   _get_route_latency(src, dst, route, latency);
 600   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
 601   xbt_assert(!latency || *latency >= 0.0,
 602              "latency error on route between \"%s\" and \"%s\"", src, dst);
 603   if (route) {
 604     xbt_dynar_free(&last_route);
 605     last_route = cleanup ? *route : NULL;
 606   }
 607 }
 608
 609 /**
 610  * \brief Find a route between hosts
 611  *
 612  * \param src the source host name
 613  * \param dst the destination host name
 614  *
 615  * walk through the routing components tree and find a route between hosts
 616  * by calling the differents "get_route" functions in each routing component.
 617  * No need to free the returned dynar. It will be freed at the next call.
 618  */
 619 xbt_dynar_t routing_get_route(const char *src, const char *dst) {
 620   xbt_dynar_t route = NULL;
 621   get_route_latency(src, dst, &route, NULL, 1);
 622   return route;
 623 }
 624
 625 /**
 626  * \brief Generic method: find a route between hosts
 627  *
 628  * \param src the source host name
 629  * \param dst the destination host name
 630  *
 631  * walk through the routing components tree and find a route between hosts
 632  * by calling the differents "get_route" functions in each routing component.
 633  * Leaves the caller the responsability to clean the returned dynar.
 634  */
 635 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
 636 {
 637   xbt_dynar_t route = NULL;
 638   get_route_latency(src, dst, &route, NULL, 0);
 639   return route;
 640 }
 641
 642 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 643 {
 644   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 645
 646   //adding my one link routes
 647   unsigned int cpt;
 648   void *link;
 649   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 650   if (onelink_mine) {
 651     xbt_dynar_foreach(onelink_mine, cpt, link) {
 652       xbt_dynar_push(ret, &link);
 653     }
 654   }
 655   //recursing
 656   char *key;
 657   xbt_dict_cursor_t cursor = NULL;
 658   AS_t rc_child;
 659   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 660     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 661     if (onelink_child) {
 662       xbt_dynar_foreach(onelink_child, cpt, link) {
 663         xbt_dynar_push(ret, &link);
 664       }
 665     }
 666   }
 667   return ret;
 668 }
 669
 670 static xbt_dynar_t get_onelink_routes(void)
 671 {
 672   return recursive_get_onelink_routes(global_routing->root);
 673 }
 674
 675 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 676 {
 677   network_element_info_t rc = NULL;
 678
 679   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 680   if (rc)
 681     return rc->rc_type;
 682
 683   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 684   if (rc)
 685     return rc->rc_type;
 686
 687   return SURF_NETWORK_ELEMENT_NULL;
 688 }
 689
 690 /**
 691  * \brief Generic method: create the global routing schema
 692  *
 693  * Make a global routing structure and set all the parsing functions.
 694  */
 695 void routing_model_create(size_t size_of_links, void *loopback)
 696 {
 697   /* config the uniq global routing */
 698   global_routing = xbt_new0(s_routing_global_t, 1);
 699   global_routing->root = NULL;
 700   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 701   global_routing->get_onelink_routes = get_onelink_routes;
 702   global_routing->get_route_latency = get_route_latency;
 703   global_routing->loopback = loopback;
 704   global_routing->size_of_link = size_of_links;
 705   /* no current routing at moment */
 706   current_routing = NULL;
 707 }
 708
 709
 710 /* ************************************************** */
 711 /* ********** PATERN FOR NEW ROUTING **************** */
 712
 713 /* The minimal configuration of a new routing model need the next functions,
 714  * also you need to set at the start of the file, the new model in the model
 715  * list. Remember keep the null ending of the list.
 716  */
 717 /*** Routing model structure ***/
 718 // typedef struct {
 719 //   s_routing_component_t generic_routing;
 720 //   /* things that your routing model need */
 721 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 722
 723 /*** Parse routing model functions ***/
 724 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 725 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 726 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 727 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 728 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 729
 730 /*** Business methods ***/
 731 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 732 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 733 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 734
 735 /*** Creation routing model functions ***/
 736 // static void* model_NEW_create(void) {
 737 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 738 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 739 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 740 //   new_component->generic_routing.set_route = model_NEW_set_route;
 741 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 742 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 743 //   new_component->generic_routing.get_route = NEW_get_route;
 744 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 745 //   new_component->generic_routing.finalize = NEW_finalize;
 746 //   /* initialization of internal structures */
 747 //   return new_component;
 748 // } /* mandatory */
 749 // static void  model_NEW_load(void) {}   /* mandatory */
 750 // static void  model_NEW_unload(void) {} /* mandatory */
 751 // static void  model_NEW_end(void) {}    /* mandatory */
 752
 753 /* ************************************************************************** */
 754 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 755
 756
 757 static void routing_parse_cluster(void)
 758 {
 759   char *host_id, *groups, *link_id = NULL;
 760   xbt_dict_t patterns = NULL;
 761
 762   s_sg_platf_host_cbarg_t host;
 763   s_sg_platf_link_cbarg_t link;
 764
 765   if (strcmp(struct_cluster->availability_trace, "")
 766       || strcmp(struct_cluster->state_trace, "")) {
 767     patterns = xbt_dict_new();
 768     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
 769     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
 770     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
 771   }
 772
 773   unsigned int iter;
 774   int start, end, i;
 775   xbt_dynar_t radical_elements;
 776   xbt_dynar_t radical_ends;
 777
 778   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
 779   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
 780
 781   //Make all hosts
 782   radical_elements = xbt_str_split(struct_cluster->radical, ",");
 783   xbt_dynar_foreach(radical_elements, iter, groups) {
 784     memset(&host, 0, sizeof(host));
 785
 786     radical_ends = xbt_str_split(groups, "-");
 787     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 788
 789     switch (xbt_dynar_length(radical_ends)) {
 790     case 1:
 791       end = start;
 792       break;
 793     case 2:
 794       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 795       break;
 796     default:
 797       surf_parse_error("Malformed radical");
 798       break;
 799     }
 800     for (i = start; i <= end; i++) {
 801       host_id =
 802           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
 803       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
 804
 805       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
 806                 struct_cluster->power);
 807       host.id = host_id;
 808       if (strcmp(struct_cluster->availability_trace, "")) {
 809         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 810         char *tmp_availability_file =
 811             xbt_str_varsubst(struct_cluster->availability_trace, patterns);
 812         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
 813         host.power_trace = tmgr_trace_new(tmp_availability_file);
 814         xbt_free(tmp_availability_file);
 815       } else {
 816         XBT_DEBUG("\tavailability_file=\"\"");
 817       }
 818       if (strcmp(struct_cluster->state_trace, "")) {
 819         char *tmp_state_file =
 820             xbt_str_varsubst(struct_cluster->state_trace, patterns);
 821         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
 822         host.state_trace = tmgr_trace_new(tmp_state_file);
 823         xbt_free(tmp_state_file);
 824       } else {
 825         XBT_DEBUG("\tstate_file=\"\"");
 826       }
 827
 828       host.power_peak = struct_cluster->power;
 829       host.power_scale = 1.0;
 830       host.core_amount = struct_cluster->core_amount;
 831       host.initial_state = SURF_RESOURCE_ON;
 832       host.coord = "";
 833       sg_platf_new_host(&host);
 834       XBT_DEBUG("</host>");
 835
 836       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 837                 struct_cluster->bw, struct_cluster->lat);
 838
 839       memset(&link, 0, sizeof(link));
 840       link.id = link_id;
 841       link.bandwidth = struct_cluster->bw;
 842       link.latency = struct_cluster->lat;
 843       link.state = SURF_RESOURCE_ON;
 844
 845       switch (struct_cluster->sharing_policy) {
 846       case A_surfxml_cluster_sharing_policy_SHARED:
 847         link.policy = SURF_LINK_SHARED;
 848         break;
 849       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
 850         link.policy = SURF_LINK_FULLDUPLEX;
 851         break;
 852       case A_surfxml_cluster_sharing_policy_FATPIPE:
 853         link.policy = SURF_LINK_FATPIPE;
 854         break;
 855       default:
 856         surf_parse_error(bprintf
 857                          ("Invalid cluster sharing policy for cluster %s",
 858                           struct_cluster->id));
 859         break;
 860       }
 861       sg_platf_new_link(&link);
 862
 863       surf_parsing_link_up_down_t info =
 864           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 865       if (link.policy == SURF_LINK_FULLDUPLEX) {
 866         char *tmp_link = bprintf("%s_UP", link_id);
 867         info->link_up =
 868             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 869         free(tmp_link);
 870         tmp_link = bprintf("%s_DOWN", link_id);
 871         info->link_down =
 872             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 873         free(tmp_link);
 874       } else {
 875         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 876         info->link_down = info->link_up;
 877       }
 878       surf_routing_cluster_add_link(host_id, info);
 879
 880       xbt_free(link_id);
 881       xbt_free(host_id);
 882     }
 883
 884     xbt_dynar_free(&radical_ends);
 885   }
 886   xbt_dynar_free(&radical_elements);
 887
 888   // 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
 889   XBT_DEBUG(" ");
 890   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
 891   s_sg_platf_router_cbarg_t router;
 892   char *newid = NULL;
 893   memset(&router, 0, sizeof(router));
 894   router.id = struct_cluster->router_id;
 895   router.coord = "";
 896   if (!router.id || !strcmp(router.id, ""))
 897     router.id = newid =
 898         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
 899                 struct_cluster->suffix);
 900   sg_platf_new_router(&router);
 901   free(newid);
 902
 903   //Make the backbone
 904   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
 905     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
 906     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 907               struct_cluster->bb_bw, struct_cluster->bb_lat);
 908
 909     memset(&link, 0, sizeof(link));
 910     link.id = link_backbone;
 911     link.bandwidth = struct_cluster->bb_bw;
 912     link.latency = struct_cluster->bb_lat;
 913     link.state = SURF_RESOURCE_ON;
 914
 915     switch (struct_cluster->bb_sharing_policy) {
 916     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
 917       link.policy = SURF_LINK_FATPIPE;
 918       break;
 919     case A_surfxml_cluster_bb_sharing_policy_SHARED:
 920       link.policy = SURF_LINK_SHARED;
 921       break;
 922     default:
 923       surf_parse_error(bprintf
 924                        ("Invalid bb sharing policy in cluster %s",
 925                         struct_cluster->id));
 926       break;
 927     }
 928
 929     sg_platf_new_link(&link);
 930
 931     surf_parsing_link_up_down_t info =
 932         xbt_new0(s_surf_parsing_link_up_down_t, 1);
 933     info->link_up =
 934         xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL);
 935     info->link_down = info->link_up;
 936     surf_routing_cluster_add_link(struct_cluster->id, info);
 937
 938     free(link_backbone);
 939   }
 940
 941   XBT_DEBUG(" ");
 942
 943   char *new_suffix = xbt_strdup("");
 944
 945   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
 946   xbt_dynar_foreach(radical_elements, iter, groups) {
 947     if (strcmp(groups, "")) {
 948       char *old_suffix = new_suffix;
 949       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
 950       free(old_suffix);
 951     }
 952   }
 953
 954   xbt_dynar_free(&radical_elements);
 955   xbt_free(new_suffix);
 956
 957   XBT_DEBUG("</AS>");
 958   sg_platf_new_AS_end();
 959   XBT_DEBUG(" ");
 960   xbt_dict_free(&patterns); // no op if it were never set
 961 }
 962
 963 static void routing_parse_postparse(void) {
 964   xbt_dict_free(&random_value);
 965 }
 966
 967 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 968 {
 969   static int AX_ptr = 0;
 970   char *host_id = NULL;
 971   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
 972
 973   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
 974   static unsigned int surfxml_buffer_stack_stack[1024];
 975
 976   surfxml_buffer_stack_stack[0] = 0;
 977
 978   surfxml_bufferstack_push(1);
 979
 980   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
 981   sg_platf_new_AS_begin(peer->id, "Full");
 982
 983   XBT_DEBUG(" ");
 984   host_id = HOST_PEER(peer->id);
 985   router_id = ROUTER_PEER(peer->id);
 986   link_id_up = LINK_UP_PEER(peer->id);
 987   link_id_down = LINK_DOWN_PEER(peer->id);
 988
 989   link_router = bprintf("%s_link_router", peer->id);
 990   link_backbone = bprintf("%s_backbone", peer->id);
 991
 992   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 993   s_sg_platf_host_cbarg_t host;
 994   memset(&host, 0, sizeof(host));
 995   host.initial_state = SURF_RESOURCE_ON;
 996   host.id = host_id;
 997   host.power_peak = peer->power;
 998   host.power_scale = 1.0;
 999   host.power_trace = peer->availability_trace;
1000   host.state_trace = peer->state_trace;
1001   host.core_amount = 1;
1002   sg_platf_new_host(&host);
1003
1004
1005   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1006   s_sg_platf_router_cbarg_t router;
1007   memset(&router, 0, sizeof(router));
1008   router.id = router_id;
1009   router.coord = peer->coord;
1010   sg_platf_new_router(&router);
1011
1012   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1013             peer->bw_in, peer->lat);
1014   s_sg_platf_link_cbarg_t link;
1015   memset(&link, 0, sizeof(link));
1016   link.state = SURF_RESOURCE_ON;
1017   link.policy = SURF_LINK_SHARED;
1018   link.id = link_id_up;
1019   link.bandwidth = peer->bw_in;
1020   link.latency = peer->lat;
1021   sg_platf_new_link(&link);
1022
1023   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1024   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1025   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1026             peer->bw_out, peer->lat);
1027   link.id = link_id_down;
1028   sg_platf_new_link(&link);
1029
1030   XBT_DEBUG(" ");
1031
1032   // begin here
1033   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1034   XBT_DEBUG("symmetrical=\"NO\">");
1035   SURFXML_BUFFER_SET(route_src, host_id);
1036   SURFXML_BUFFER_SET(route_dst, router_id);
1037   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1038   SURFXML_START_TAG(route);
1039
1040   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1041   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1042   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1043   SURFXML_START_TAG(link_ctn);
1044   SURFXML_END_TAG(link_ctn);
1045
1046   XBT_DEBUG("</route>");
1047   SURFXML_END_TAG(route);
1048
1049   //Opposite Route
1050   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1051   XBT_DEBUG("symmetrical=\"NO\">");
1052   SURFXML_BUFFER_SET(route_src, router_id);
1053   SURFXML_BUFFER_SET(route_dst, host_id);
1054   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1055   SURFXML_START_TAG(route);
1056
1057   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1058   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1059   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1060   SURFXML_START_TAG(link_ctn);
1061   SURFXML_END_TAG(link_ctn);
1062
1063   XBT_DEBUG("</route>");
1064   SURFXML_END_TAG(route);
1065
1066   XBT_DEBUG("</AS>");
1067   sg_platf_new_AS_end();
1068   XBT_DEBUG(" ");
1069
1070   //xbt_dynar_free(&tab_elements_num);
1071   free(host_id);
1072   free(router_id);
1073   free(link_router);
1074   free(link_backbone);
1075   free(link_id_up);
1076   free(link_id_down);
1077   surfxml_bufferstack_pop(1);
1078 }
1079
1080 static void routing_parse_Srandom(void)
1081 {
1082   double mean, std, min, max, seed;
1083   char *random_id = A_surfxml_random_id;
1084   char *random_radical = A_surfxml_random_radical;
1085   char *rd_name = NULL;
1086   char *rd_value;
1087   mean = surf_parse_get_double(A_surfxml_random_mean);
1088   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1089   min = surf_parse_get_double(A_surfxml_random_min);
1090   max = surf_parse_get_double(A_surfxml_random_max);
1091   seed = surf_parse_get_double(A_surfxml_random_seed);
1092
1093   double res = 0;
1094   int i = 0;
1095   random_data_t random = xbt_new0(s_random_data_t, 1);
1096   char *tmpbuf;
1097
1098   xbt_dynar_t radical_elements;
1099   unsigned int iter;
1100   char *groups;
1101   int start, end;
1102   xbt_dynar_t radical_ends;
1103
1104   random->generator = A_surfxml_random_generator;
1105   random->seed = seed;
1106   random->min = min;
1107   random->max = max;
1108
1109   /* Check user stupidities */
1110   if (max < min)
1111     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1112   if (mean < min)
1113     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1114   if (mean > max)
1115     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1116
1117   /* normalize the mean and standard deviation before storing */
1118   random->mean = (mean - min) / (max - min);
1119   random->std = std / (max - min);
1120
1121   if (random->mean * (1 - random->mean) < random->std * random->std)
1122     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1123            random->mean, random->std);
1124
1125   XBT_DEBUG
1126       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1127        random_id, random->min, random->max, random->mean, random->std,
1128        random->generator, random->seed, random_radical);
1129
1130   if (xbt_dict_size(random_value) == 0)
1131     random_value = xbt_dict_new();
1132
1133   if (!strcmp(random_radical, "")) {
1134     res = random_generate(random);
1135     rd_value = bprintf("%f", res);
1136     xbt_dict_set(random_value, random_id, rd_value, free);
1137   } else {
1138     radical_elements = xbt_str_split(random_radical, ",");
1139     xbt_dynar_foreach(radical_elements, iter, groups) {
1140       radical_ends = xbt_str_split(groups, "-");
1141       switch (xbt_dynar_length(radical_ends)) {
1142       case 1:
1143         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1144                    "Custom Random '%s' already exists !", random_id);
1145         res = random_generate(random);
1146         tmpbuf =
1147             bprintf("%s%d", random_id,
1148                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1149         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1150         xbt_free(tmpbuf);
1151         break;
1152
1153       case 2:
1154         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1155         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1156         for (i = start; i <= end; i++) {
1157           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1158                      "Custom Random '%s' already exists !", bprintf("%s%d",
1159                                                                     random_id,
1160                                                                     i));
1161           res = random_generate(random);
1162           tmpbuf = bprintf("%s%d", random_id, i);
1163           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1164           xbt_free(tmpbuf);
1165         }
1166         break;
1167       default:
1168         XBT_INFO("Malformed radical");
1169         break;
1170       }
1171       res = random_generate(random);
1172       rd_name = bprintf("%s_router", random_id);
1173       rd_value = bprintf("%f", res);
1174       xbt_dict_set(random_value, rd_name, rd_value, free);
1175
1176       xbt_dynar_free(&radical_ends);
1177     }
1178     free(rd_name);
1179     xbt_dynar_free(&radical_elements);
1180   }
1181 }
1182
1183 void routing_register_callbacks()
1184 {
1185   sg_platf_host_add_cb(parse_S_host);
1186   sg_platf_router_add_cb(parse_S_router);
1187
1188   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1189
1190   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1191   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1192   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1193                        &routing_parse_S_bypassRoute);
1194
1195   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1196
1197   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1198   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1199   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1200                        &routing_parse_E_bypassRoute);
1201
1202   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1203
1204   sg_platf_peer_add_cb(routing_parse_peer);
1205   sg_platf_postparse_add_cb(routing_parse_postparse);
1206
1207 #ifdef HAVE_TRACING
1208   instr_routing_define_callbacks();
1209 #endif
1210 }
1211
1212 /**
1213  * \brief Recursive function for finalize
1214  *
1215  * \param rc the source host name
1216  *
1217  * This fuction is call by "finalize". It allow to finalize the
1218  * AS or routing components. It delete all the structures.
1219  */
1220 static void finalize_rec(AS_t as) {
1221   xbt_dict_cursor_t cursor = NULL;
1222   char *key;
1223   AS_t elem;
1224
1225   xbt_dict_foreach(as->routing_sons, cursor, key, elem)
1226   finalize_rec(elem);
1227
1228   xbt_dict_free(&as->routing_sons);
1229   xbt_free(as->name);
1230   as->finalize(as);
1231 }
1232
1233 /** \brief Frees all memory allocated by the routing module */
1234 void routing_exit(void) {
1235   if (!global_routing)
1236     return;
1237   finalize_rec(global_routing->root);
1238   xbt_free(global_routing);
1239 }