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 "simgrid/platf_interface.h"    // platform creation API internal interface
   8
   9 #include "surf_routing_private.h"
  10 #include "surf/surf_routing.h"
  11 #include "surf/surfxml_parse_values.h"
  12
  13 /**
  14  * @ingroup SURF_build_api
  15  * @brief A library containing all known workstations
  16  */
  17 xbt_lib_t host_lib;
  18
  19 int ROUTING_HOST_LEVEL;         //Routing level
  20 int SURF_CPU_LEVEL;             //Surf cpu level
  21 int SURF_WKS_LEVEL;             //Surf workstation level
  22 int SIMIX_HOST_LEVEL;           //Simix level
  23 int MSG_HOST_LEVEL;             //Msg level
  24 int SD_HOST_LEVEL;              //Simdag level
  25 int COORD_HOST_LEVEL=0;         //Coordinates level
  26 int NS3_HOST_LEVEL;             //host node for ns3
  27
  28 xbt_dict_t watched_hosts_lib;
  29
  30 /**
  31  * @ingroup SURF_build_api
  32  * @brief A library containing all known links
  33  */
  34 xbt_lib_t link_lib;
  35 int SD_LINK_LEVEL;              //Simdag level
  36 int SURF_LINK_LEVEL;            //Surf level
  37 int NS3_LINK_LEVEL;             //link for ns3
  38
  39 xbt_lib_t as_router_lib;
  40 int ROUTING_ASR_LEVEL;          //Routing level
  41 int COORD_ASR_LEVEL;            //Coordinates level
  42 int NS3_ASR_LEVEL;              //host node for ns3
  43 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  44
  45 static xbt_dict_t random_value = NULL;
  46
  47 /** @brief Retrieve a routing edge from its name
  48  *
  49  * Routing edges are either CPU/workstation and routers, whatever
  50  */
  51 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  52     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  53     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  54   return net_elm;
  55 }
  56
  57 /* Global vars */
  58 routing_platf_t routing_platf = NULL;
  59 AS_t current_routing = NULL;
  60
  61 /* global parse functions */
  62 extern xbt_dynar_t mount_list;
  63
  64 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  65
  66 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  67 static void routing_parse_Srandom(void);        /* random bypass */
  68
  69 static void routing_parse_postparse(void);
  70
  71 /* this lines are only for replace use like index in the model table */
  72 typedef enum {
  73   SURF_MODEL_FULL = 0,
  74   SURF_MODEL_FLOYD,
  75   SURF_MODEL_DIJKSTRA,
  76   SURF_MODEL_DIJKSTRACACHE,
  77   SURF_MODEL_NONE,
  78   SURF_MODEL_RULEBASED,
  79   SURF_MODEL_VIVALDI,
  80   SURF_MODEL_CLUSTER
  81 } e_routing_types;
  82
  83 struct s_model_type routing_models[] = {
  84   {"Full",
  85    "Full routing data (fast, large memory requirements, fully expressive)",
  86    model_full_create, model_full_end},
  87   {"Floyd",
  88    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  89    model_floyd_create, model_floyd_end},
  90   {"Dijkstra",
  91    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  92    model_dijkstra_create, model_dijkstra_both_end},
  93   {"DijkstraCache",
  94    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  95    model_dijkstracache_create, model_dijkstra_both_end},
  96   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  97    model_none_create,  NULL},
  98   {"RuleBased", "Rule-Based routing data (...)",
  99    model_rulebased_create, NULL},
 100   {"Vivaldi", "Vivaldi routing",
 101    model_vivaldi_create, NULL},
 102   {"Cluster", "Cluster routing",
 103    model_cluster_create, NULL},
 104   {NULL, NULL, NULL, NULL}
 105 };
 106
 107 /**
 108  * \brief Add a "host_link" to the network element list
 109  */
 110 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 111 {
 112   sg_routing_edge_t info = NULL;
 113   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 114   xbt_assert(info, "Host '%s' not found!",host->id);
 115   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 116       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 117       "You have to be in model Cluster to use tag host_link!");
 118
 119   s_surf_parsing_link_up_down_t link_up_down;
 120   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 121   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 122
 123   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 124   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 125
 126   if(!current_routing->link_up_down_list)
 127     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 128
 129   // If dynar is is greater than edge id and if the host_link is already defined
 130   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 131       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 132     xbt_die("Host_link for '%s' is already defined!",host->id);
 133
 134   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 135   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 136 }
 137
 138 /**
 139  * \brief Add a "host" to the network element list
 140  */
 141 static void parse_S_host(sg_platf_host_cbarg_t host)
 142 {
 143   sg_routing_edge_t info = NULL;
 144   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 145     current_routing->hierarchy = SURF_ROUTING_BASE;
 146   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 147              "Reading a host, processing unit \"%s\" already exists", host->id);
 148
 149   info = xbt_new0(s_routing_edge_t, 1);
 150   info->rc_component = current_routing;
 151   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 152   info->name = xbt_strdup(host->id);
 153   info->id = current_routing->parse_PU(current_routing, (void *) info);
 154   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 155   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 156
 157   if(mount_list){
 158     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 159     mount_list = NULL;
 160   }
 161
 162   if (host->coord && strcmp(host->coord, "")) {
 163     unsigned int cursor;
 164     char*str;
 165
 166     if (!COORD_HOST_LEVEL)
 167       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 168     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 169     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 170     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 171     xbt_dynar_foreach(ctn_str,cursor, str) {
 172       double val = atof(str);
 173       xbt_dynar_push(ctn,&val);
 174     }
 175     xbt_dynar_shrink(ctn, 0);
 176     xbt_dynar_free(&ctn_str);
 177     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 178     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 179   }
 180 }
 181
 182 /**
 183  * \brief Add a "router" to the network element list
 184  */
 185 static void parse_S_router(sg_platf_router_cbarg_t router)
 186 {
 187   sg_routing_edge_t info = NULL;
 188   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 189     current_routing->hierarchy = SURF_ROUTING_BASE;
 190   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 191              "Reading a router, processing unit \"%s\" already exists",
 192              router->id);
 193
 194   info = xbt_new0(s_routing_edge_t, 1);
 195   info->rc_component = current_routing;
 196   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 197   info->name = xbt_strdup(router->id);
 198   info->id = current_routing->parse_PU(current_routing, (void *) info);
 199   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 200   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 201
 202   if (router->coord && strcmp(router->coord, "")) {
 203     unsigned int cursor;
 204     char*str;
 205
 206     if (!COORD_ASR_LEVEL)
 207       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 208     /* Pre-parse the host coordinates */
 209     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 210     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 211     xbt_dynar_foreach(ctn_str,cursor, str) {
 212       double val = atof(str);
 213       xbt_dynar_push(ctn,&val);
 214     }
 215     xbt_dynar_shrink(ctn, 0);
 216     xbt_dynar_free(&ctn_str);
 217     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 218     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 219   }
 220 }
 221
 222 /**
 223  * \brief Store the route by calling the set_route function of the current routing component
 224  */
 225 static void parse_E_route(sg_platf_route_cbarg_t route)
 226 {
 227   xbt_assert(current_routing->parse_route,
 228              "no defined method \"set_route\" in \"%s\"",
 229              current_routing->name);
 230
 231   current_routing->parse_route(current_routing, route);
 232 }
 233
 234 /**
 235  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 236  */
 237 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 238 {
 239   xbt_assert(current_routing->parse_ASroute,
 240              "no defined method \"set_ASroute\" in \"%s\"",
 241              current_routing->name);
 242   current_routing->parse_ASroute(current_routing, ASroute);
 243 }
 244
 245 /**
 246  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 247  */
 248 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 249 {
 250   xbt_assert(current_routing->parse_bypassroute,
 251              "Bypassing mechanism not implemented by routing '%s'",
 252              current_routing->name);
 253
 254   current_routing->parse_bypassroute(current_routing, route);
 255 }
 256
 257 /**
 258  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 259  */
 260 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 261 {
 262   xbt_assert(current_routing->parse_bypassroute,
 263              "Bypassing mechanism not implemented by routing '%s'",
 264              current_routing->name);
 265   current_routing->parse_bypassroute(current_routing, ASroute);
 266 }
 267
 268 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 269 {
 270   tmgr_trace_t tmgr_trace;
 271   if (!trace->file || strcmp(trace->file, "") != 0) {
 272     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 273   } else if (strcmp(trace->pc_data, "") == 0) {
 274     tmgr_trace = NULL;
 275   } else {
 276     tmgr_trace =
 277           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 278                                      trace->periodicity);
 279   }
 280   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 281 }
 282
 283 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 284 {
 285   xbt_assert(xbt_dict_get_or_null
 286               (traces_set_list, trace_connect->trace),
 287               "Cannot connect trace %s to %s: trace unknown",
 288               trace_connect->trace,
 289               trace_connect->element);
 290
 291   switch (trace_connect->kind) {
 292   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 293     xbt_dict_set(trace_connect_list_host_avail,
 294         trace_connect->trace,
 295         xbt_strdup(trace_connect->element), NULL);
 296     break;
 297   case SURF_TRACE_CONNECT_KIND_POWER:
 298     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 299         xbt_strdup(trace_connect->element), NULL);
 300     break;
 301   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 302     xbt_dict_set(trace_connect_list_link_avail,
 303         trace_connect->trace,
 304         xbt_strdup(trace_connect->element), NULL);
 305     break;
 306   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 307     xbt_dict_set(trace_connect_list_bandwidth,
 308         trace_connect->trace,
 309         xbt_strdup(trace_connect->element), NULL);
 310     break;
 311   case SURF_TRACE_CONNECT_KIND_LATENCY:
 312     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 313         xbt_strdup(trace_connect->element), NULL);
 314     break;
 315   default:
 316     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 317         trace_connect->trace, trace_connect->element);
 318     break;
 319   }
 320 }
 321
 322 extern int _sg_init_status; /* yay, this is an horrible hack */
 323
 324 /**
 325  * \brief Make a new routing component to the platform
 326  *
 327  * Add a new autonomous system to the platform. Any elements (such as host,
 328  * router or sub-AS) added after this call and before the corresponding call
 329  * to sg_platf_new_AS_close() will be added to this AS.
 330  *
 331  * Once this function was called, the configuration concerning the used
 332  * models cannot be changed anymore.
 333  *
 334  * @param AS_id name of this autonomous system. Must be unique in the platform
 335  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 336  */
 337 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 338 {
 339   XBT_DEBUG("routing_AS_begin");
 340   AS_t new_as;
 341   routing_model_description_t model = NULL;
 342
 343   xbt_assert(!xbt_lib_get_or_null
 344              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 345              "The AS \"%s\" already exists", AS->id);
 346
 347   _sg_init_status = 2; /* horrible hack: direct access to the global controlling the level of configuration to prevent any further config */
 348
 349   /* search the routing model */
 350   switch(AS->routing){
 351     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 352     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 353     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 354     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 355     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 356     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 357     case A_surfxml_AS_routing_RuleBased:     model = &routing_models[SURF_MODEL_RULEBASED];break;
 358     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 359     default: xbt_die("Not a valid model!!!");
 360     break;
 361   }
 362
 363   /* make a new routing component */
 364   new_as = (AS_t) model->create();
 365   new_as->model_desc = model;
 366   new_as->hierarchy = SURF_ROUTING_NULL;
 367   new_as->name = xbt_strdup(AS->id);
 368
 369   sg_routing_edge_t info = NULL;
 370   info = xbt_new0(s_routing_edge_t, 1);
 371
 372   if (current_routing == NULL && routing_platf->root == NULL) {
 373
 374     /* it is the first one */
 375     new_as->routing_father = NULL;
 376     routing_platf->root = new_as;
 377     info->id = -1;
 378   } else if (current_routing != NULL && routing_platf->root != NULL) {
 379
 380     xbt_assert(!xbt_dict_get_or_null
 381                (current_routing->routing_sons, AS->id),
 382                "The AS \"%s\" already exists", AS->id);
 383     /* it is a part of the tree */
 384     new_as->routing_father = current_routing;
 385     /* set the father behavior */
 386     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 387       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 388     /* add to the sons dictionary */
 389     xbt_dict_set(current_routing->routing_sons, AS->id,
 390                  (void *) new_as, NULL);
 391     /* add to the father element list */
 392     info->id = current_routing->parse_AS(current_routing, (void *) info);
 393   } else {
 394     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 395   }
 396
 397   info->rc_component = new_as->routing_father;
 398   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 399   info->name = new_as->name;
 400
 401   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 402               (void *) info);
 403   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 404
 405   /* set the new current component of the tree */
 406   current_routing = new_as;
 407   current_routing->net_elem = info;
 408
 409 }
 410
 411 /**
 412  * \brief Specify that the current description of AS is finished
 413  *
 414  * Once you've declared all the content of your AS, you have to close
 415  * it with this call. Your AS is not usable until you call this function.
 416  *
 417  * @fixme: this call is not as robust as wanted: bad things WILL happen
 418  * if you call it twice for the same AS, or if you forget calling it, or
 419  * even if you add stuff to a closed AS
 420  *
 421  */
 422 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 423 {
 424
 425   if (current_routing == NULL) {
 426     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 427   } else {
 428     if (current_routing->model_desc->end)
 429       current_routing->model_desc->end(current_routing);
 430     current_routing = current_routing->routing_father;
 431   }
 432 }
 433
 434 /* Aux Business methods */
 435
 436 /**
 437  * \brief Get the AS father and the first elements of the chain
 438  *
 439  * \param src the source host name
 440  * \param dst the destination host name
 441  *
 442  * Get the common father of the to processing units, and the first different
 443  * father in the chain
 444  */
 445 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 446                             AS_t * res_father,
 447                             AS_t * res_src,
 448                             AS_t * res_dst)
 449 {
 450   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 451 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 452   AS_t src_as, dst_as;
 453   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 454   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 455   int index_src = 0;
 456   int index_dst = 0;
 457   AS_t current;
 458   AS_t current_src;
 459   AS_t current_dst;
 460   AS_t father;
 461
 462   /* (1) find the as where the src and dst are located */
 463   sg_routing_edge_t src_data = src;
 464   sg_routing_edge_t dst_data = dst;
 465   src_as = src_data->rc_component;
 466   dst_as = dst_data->rc_component;
 467 #ifndef NDEBUG
 468   char* src_name = src_data->name;
 469   char* dst_name = dst_data->name;
 470 #endif
 471
 472   xbt_assert(src_as && dst_as,
 473              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 474
 475   /* (2) find the path to the root routing component */
 476   for (current = src_as; current != NULL; current = current->routing_father) {
 477     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 478       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 479     path_src[index_src++] = current;
 480   }
 481   for (current = dst_as; current != NULL; current = current->routing_father) {
 482     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 483       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 484     path_dst[index_dst++] = current;
 485   }
 486
 487   /* (3) find the common father */
 488   do {
 489     current_src = path_src[--index_src];
 490     current_dst = path_dst[--index_dst];
 491   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 492
 493   /* (4) they are not in the same routing component, make the path */
 494   if (current_src == current_dst)
 495     father = current_src;
 496   else
 497     father = path_src[index_src + 1];
 498
 499   /* (5) result generation */
 500   *res_father = father;         /* first the common father of src and dst */
 501   *res_src = current_src;       /* second the first different father of src */
 502   *res_dst = current_dst;       /* three  the first different father of dst */
 503
 504 #undef ELEMENTS_FATHER_MAXDEPTH
 505 }
 506
 507 /* Global Business methods */
 508
 509 /**
 510  * \brief Recursive function for get_route_latency
 511  *
 512  * \param src the source host name
 513  * \param dst the destination host name
 514  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 515  * \param *latency the latency, if needed
 516  *
 517  * This function is called by "get_route" and "get_latency". It allows to walk
 518  * recursively through the ASes tree.
 519  */
 520 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 521                                    xbt_dynar_t * links, double *latency)
 522 {
 523   s_sg_platf_route_cbarg_t route;
 524   memset(&route,0,sizeof(route));
 525
 526   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 527   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 528
 529   /* Find how src and dst are interconnected */
 530   AS_t common_father, src_father, dst_father;
 531   elements_father(src, dst, &common_father, &src_father, &dst_father);
 532   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 533       common_father->name,src_father->name,dst_father->name);
 534
 535   /* Check whether a direct bypass is defined */
 536   sg_platf_route_cbarg_t e_route_bypass = NULL;
 537   if (common_father->get_bypass_route)
 538     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 539
 540   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 541   if (e_route_bypass) {
 542     xbt_dynar_merge(links, &e_route_bypass->link_list);
 543     generic_free_route(e_route_bypass);
 544     return;
 545   }
 546
 547   /* If src and dst are in the same AS, life is good */
 548   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 549     route.link_list = *links;
 550     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 551     // if vivaldi latency+=vivaldi(src,dst)
 552     return;
 553   }
 554
 555   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 556
 557   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 558   // Find the net_card corresponding to father
 559   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 560   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 561
 562   common_father->get_route_and_latency(common_father,
 563                                        src_father_net_elm, dst_father_net_elm,
 564                                        &route, latency);
 565
 566   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 567       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 568
 569   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 570   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 571
 572   /* If source gateway is not our source, we have to recursively find our way up to this point */
 573   if (src != src_gateway_net_elm)
 574     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 575   xbt_dynar_merge(links, &route.link_list);
 576
 577   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 578   if (dst_gateway_net_elm != dst)
 579     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 580
 581   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 582 }
 583
 584 /**
 585  * \brief Find a route between hosts
 586  *
 587  * \param src the network_element_t for src host
 588  * \param dst the network_element_t for dst host
 589  * \param route where to store the list of links.
 590  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 591  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 592  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 593  * \pre route!=NULL
 594  *
 595  * walk through the routing components tree and find a route between hosts
 596  * by calling the differents "get_route" functions in each routing component.
 597  */
 598 void routing_get_route_and_latency(sg_routing_edge_t src,
 599                                    sg_routing_edge_t dst,
 600                                    xbt_dynar_t * route, double *latency)
 601 {
 602   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 603   if (!*route) {
 604     xbt_dynar_reset(routing_platf->last_route);
 605     *route = routing_platf->last_route;
 606   }
 607
 608   _get_route_and_latency(src, dst, route, latency);
 609
 610   xbt_assert(!latency || *latency >= 0.0,
 611              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 612 }
 613
 614 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 615 {
 616   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 617
 618   //adding my one link routes
 619   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 620   if (onelink_mine)
 621     xbt_dynar_merge(&ret,&onelink_mine);
 622
 623   //recursing
 624   char *key;
 625   xbt_dict_cursor_t cursor = NULL;
 626   AS_t rc_child;
 627   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 628     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 629     if (onelink_child)
 630       xbt_dynar_merge(&ret,&onelink_child);
 631   }
 632   return ret;
 633 }
 634
 635 static xbt_dynar_t get_onelink_routes(void)
 636 {
 637   return recursive_get_onelink_routes(routing_platf->root);
 638 }
 639
 640 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 641 {
 642   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 643   if (rc)
 644     return rc->rc_type;
 645
 646   return SURF_NETWORK_ELEMENT_NULL;
 647 }
 648
 649 /**
 650  * \brief Generic method: create the global routing schema
 651  *
 652  * Make a global routing structure and set all the parsing functions.
 653  */
 654 void routing_model_create( void *loopback)
 655 {
 656   /* config the uniq global routing */
 657   routing_platf = xbt_new0(s_routing_platf_t, 1);
 658   routing_platf->root = NULL;
 659   routing_platf->get_onelink_routes = get_onelink_routes;
 660   routing_platf->loopback = loopback;
 661   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 662   /* no current routing at moment */
 663   current_routing = NULL;
 664 }
 665
 666
 667 /* ************************************************** */
 668 /* ********** PATERN FOR NEW ROUTING **************** */
 669
 670 /* The minimal configuration of a new routing model need the next functions,
 671  * also you need to set at the start of the file, the new model in the model
 672  * list. Remember keep the null ending of the list.
 673  */
 674 /*** Routing model structure ***/
 675 // typedef struct {
 676 //   s_routing_component_t generic_routing;
 677 //   /* things that your routing model need */
 678 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 679
 680 /*** Parse routing model functions ***/
 681 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 682 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 683 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 684 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 685 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 686
 687 /*** Business methods ***/
 688 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 689 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 690 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 691
 692 /*** Creation routing model functions ***/
 693 // static void* model_NEW_create(void) {
 694 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 695 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 696 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 697 //   new_component->generic_routing.set_route = model_NEW_set_route;
 698 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 699 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 700 //   new_component->generic_routing.get_route = NEW_get_route;
 701 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 702 //   new_component->generic_routing.finalize = NEW_finalize;
 703 //   /* initialization of internal structures */
 704 //   return new_component;
 705 // } /* mandatory */
 706 // static void  model_NEW_load(void) {}   /* mandatory */
 707 // static void  model_NEW_unload(void) {} /* mandatory */
 708 // static void  model_NEW_end(void) {}    /* mandatory */
 709
 710 /* ************************************************************************** */
 711 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 712
 713 void routing_cluster_add_backbone(void* bb) {
 714   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 715         "You have to be in model Cluster to use tag backbone!");
 716   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 717   ((as_cluster_t)current_routing)->backbone = bb;
 718   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 719 }
 720
 721 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 722 {
 723   int start, end, i;
 724   char *groups , *host_id , *link_id = NULL;
 725   unsigned int iter;
 726   xbt_dynar_t radical_elements;
 727   xbt_dynar_t radical_ends;
 728
 729   //Make all hosts
 730   radical_elements = xbt_str_split(cabinet->radical, ",");
 731   xbt_dynar_foreach(radical_elements, iter, groups) {
 732
 733     radical_ends = xbt_str_split(groups, "-");
 734     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 735
 736     switch (xbt_dynar_length(radical_ends)) {
 737     case 1:
 738       end = start;
 739       break;
 740     case 2:
 741       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 742       break;
 743     default:
 744       surf_parse_error("Malformed radical");
 745       break;
 746     }
 747     s_sg_platf_host_cbarg_t host;
 748     memset(&host, 0, sizeof(host));
 749     host.initial_state = SURF_RESOURCE_ON;
 750     host.power_peak = cabinet->power;
 751     host.power_scale = 1.0;
 752     host.core_amount = 1;
 753
 754     s_sg_platf_link_cbarg_t link;
 755     memset(&link, 0, sizeof(link));
 756     link.state = SURF_RESOURCE_ON;
 757     link.policy = SURF_LINK_FULLDUPLEX;
 758     link.latency = cabinet->lat;
 759     link.bandwidth = cabinet->bw;
 760
 761     s_sg_platf_host_link_cbarg_t host_link;
 762     memset(&host_link, 0, sizeof(host_link));
 763
 764     for (i = start; i <= end; i++) {
 765       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 766       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 767       host.id = host_id;
 768       link.id = link_id;
 769       sg_platf_new_host(&host);
 770       sg_platf_new_link(&link);
 771
 772       char* link_up = bprintf("%s_UP",link_id);
 773       char* link_down = bprintf("%s_DOWN",link_id);
 774       host_link.id = host_id;
 775       host_link.link_up = link_up;
 776       host_link.link_down= link_down;
 777       sg_platf_new_host_link(&host_link);
 778
 779       free(host_id);
 780       free(link_id);
 781       free(link_up);
 782       free(link_down);
 783     }
 784
 785     xbt_dynar_free(&radical_ends);
 786   }
 787   xbt_dynar_free(&radical_elements);
 788 }
 789
 790 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 791 {
 792   char *host_id, *groups, *link_id = NULL;
 793   xbt_dict_t patterns = NULL;
 794
 795   s_sg_platf_host_cbarg_t host;
 796   s_sg_platf_link_cbarg_t link;
 797
 798   unsigned int iter;
 799   int start, end, i;
 800   xbt_dynar_t radical_elements;
 801   xbt_dynar_t radical_ends;
 802
 803   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 804       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 805     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 806     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 807     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 808     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 809   }
 810
 811   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 812   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 813   AS.id = cluster->id;
 814   AS.routing = A_surfxml_AS_routing_Cluster;
 815   sg_platf_new_AS_begin(&AS);
 816
 817   current_routing->link_up_down_list
 818             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 819
 820   //Make all hosts
 821   radical_elements = xbt_str_split(cluster->radical, ",");
 822   xbt_dynar_foreach(radical_elements, iter, groups) {
 823
 824     radical_ends = xbt_str_split(groups, "-");
 825     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 826
 827     switch (xbt_dynar_length(radical_ends)) {
 828     case 1:
 829       end = start;
 830       break;
 831     case 2:
 832       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 833       break;
 834     default:
 835       surf_parse_error("Malformed radical");
 836       break;
 837     }
 838     for (i = start; i <= end; i++) {
 839       host_id =
 840           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 841       link_id = bprintf("%s_link_%d", cluster->id, i);
 842
 843       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 844
 845       memset(&host, 0, sizeof(host));
 846       host.id = host_id;
 847       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 848         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 849         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 850         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 851         host.power_trace = tmgr_trace_new_from_file(avail_file);
 852         xbt_free(avail_file);
 853       } else {
 854         XBT_DEBUG("\tavailability_file=\"\"");
 855       }
 856
 857       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 858         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 859         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 860         host.state_trace = tmgr_trace_new_from_file(avail_file);
 861         xbt_free(avail_file);
 862       } else {
 863         XBT_DEBUG("\tstate_file=\"\"");
 864       }
 865
 866       host.power_peak = cluster->power;
 867       host.power_scale = 1.0;
 868       host.core_amount = cluster->core_amount;
 869       host.initial_state = SURF_RESOURCE_ON;
 870       host.coord = "";
 871       sg_platf_new_host(&host);
 872       XBT_DEBUG("</host>");
 873
 874       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 875                 cluster->bw, cluster->lat);
 876
 877       memset(&link, 0, sizeof(link));
 878       link.id = link_id;
 879       link.bandwidth = cluster->bw;
 880       link.latency = cluster->lat;
 881       link.state = SURF_RESOURCE_ON;
 882       link.policy = cluster->sharing_policy;
 883       sg_platf_new_link(&link);
 884
 885       s_surf_parsing_link_up_down_t info;
 886
 887       if (link.policy == SURF_LINK_FULLDUPLEX) {
 888         char *tmp_link = bprintf("%s_UP", link_id);
 889         info.link_up =
 890             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 891         free(tmp_link);
 892         tmp_link = bprintf("%s_DOWN", link_id);
 893         info.link_down =
 894             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 895         free(tmp_link);
 896       } else {
 897         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 898         info.link_down = info.link_up;
 899       }
 900       xbt_dynar_push(current_routing->link_up_down_list,&info);
 901       xbt_free(link_id);
 902       xbt_free(host_id);
 903     }
 904
 905     xbt_dynar_free(&radical_ends);
 906   }
 907   xbt_dynar_free(&radical_elements);
 908
 909   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 910   // and it's very useful to connect clusters together
 911   XBT_DEBUG(" ");
 912   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 913   char *newid = NULL;
 914   s_sg_platf_router_cbarg_t router;
 915   memset(&router, 0, sizeof(router));
 916   router.id = cluster->router_id;
 917   router.coord = "";
 918   if (!router.id || !strcmp(router.id, ""))
 919     router.id = newid =
 920         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 921                 cluster->suffix);
 922   sg_platf_new_router(&router);
 923   free(newid);
 924
 925   //Make the backbone
 926   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 927     char *link_backbone = bprintf("%s_backbone", cluster->id);
 928     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 929               cluster->bb_bw, cluster->bb_lat);
 930
 931     memset(&link, 0, sizeof(link));
 932     link.id = link_backbone;
 933     link.bandwidth = cluster->bb_bw;
 934     link.latency = cluster->bb_lat;
 935     link.state = SURF_RESOURCE_ON;
 936     link.policy = cluster->bb_sharing_policy;
 937
 938     sg_platf_new_link(&link);
 939
 940     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 941
 942     free(link_backbone);
 943   }
 944
 945   XBT_DEBUG("</AS>");
 946   sg_platf_new_AS_end();
 947   XBT_DEBUG(" ");
 948   xbt_dict_free(&patterns); // no op if it were never set
 949 }
 950
 951 static void routing_parse_postparse(void) {
 952   xbt_dict_free(&random_value);
 953 }
 954
 955 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 956 {
 957   char *host_id = NULL;
 958   char *link_id;
 959
 960   XBT_DEBUG(" ");
 961   host_id = HOST_PEER(peer->id);
 962   link_id = LINK_PEER(peer->id);
 963
 964   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 965   s_sg_platf_host_cbarg_t host;
 966   memset(&host, 0, sizeof(host));
 967   host.initial_state = SURF_RESOURCE_ON;
 968   host.id = host_id;
 969   host.power_peak = peer->power;
 970   host.power_scale = 1.0;
 971   host.power_trace = peer->availability_trace;
 972   host.state_trace = peer->state_trace;
 973   host.core_amount = 1;
 974   host.coord = peer->coord;
 975   sg_platf_new_host(&host);
 976
 977   s_sg_platf_link_cbarg_t link;
 978   memset(&link, 0, sizeof(link));
 979   link.state = SURF_RESOURCE_ON;
 980   link.policy = SURF_LINK_SHARED;
 981   link.latency = peer->lat;
 982
 983   char* link_up = bprintf("%s_UP",link_id);
 984   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
 985             peer->bw_out, peer->lat);
 986   link.id = link_up;
 987   link.bandwidth = peer->bw_out;
 988   sg_platf_new_link(&link);
 989
 990   char* link_down = bprintf("%s_DOWN",link_id);
 991   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
 992             peer->bw_in, peer->lat);
 993   link.id = link_down;
 994   link.bandwidth = peer->bw_in;
 995   sg_platf_new_link(&link);
 996
 997   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 998   s_sg_platf_host_link_cbarg_t host_link;
 999   memset(&host_link, 0, sizeof(host_link));
1000   host_link.id = host_id;
1001   host_link.link_up = link_up;
1002   host_link.link_down= link_down;
1003   sg_platf_new_host_link(&host_link);
1004
1005   XBT_DEBUG(" ");
1006
1007   //xbt_dynar_free(&tab_elements_num);
1008   free(host_id);
1009   free(link_id);
1010   free(link_up);
1011   free(link_down);
1012 }
1013
1014 static void routing_parse_Srandom(void)
1015 {
1016   double mean, std, min, max, seed;
1017   char *random_id = A_surfxml_random_id;
1018   char *random_radical = A_surfxml_random_radical;
1019   char *rd_name = NULL;
1020   char *rd_value;
1021   mean = surf_parse_get_double(A_surfxml_random_mean);
1022   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1023   min = surf_parse_get_double(A_surfxml_random_min);
1024   max = surf_parse_get_double(A_surfxml_random_max);
1025   seed = surf_parse_get_double(A_surfxml_random_seed);
1026
1027   double res = 0;
1028   int i = 0;
1029   random_data_t random = xbt_new0(s_random_data_t, 1);
1030   char *tmpbuf;
1031
1032   xbt_dynar_t radical_elements;
1033   unsigned int iter;
1034   char *groups;
1035   int start, end;
1036   xbt_dynar_t radical_ends;
1037
1038   switch (A_surfxml_random_generator) {
1039   case AU_surfxml_random_generator:
1040   case A_surfxml_random_generator_NONE:
1041     random->generator = NONE;
1042     break;
1043   case A_surfxml_random_generator_DRAND48:
1044     random->generator = DRAND48;
1045     break;
1046   case A_surfxml_random_generator_RAND:
1047     random->generator = RAND;
1048     break;
1049   case A_surfxml_random_generator_RNGSTREAM:
1050     random->generator = RNGSTREAM;
1051     break;
1052   default:
1053     surf_parse_error("Invalid random generator");
1054     break;
1055   }
1056   random->seed = seed;
1057   random->min = min;
1058   random->max = max;
1059
1060   /* Check user stupidities */
1061   if (max < min)
1062     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1063   if (mean < min)
1064     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1065   if (mean > max)
1066     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1067
1068   /* normalize the mean and standard deviation before storing */
1069   random->mean = (mean - min) / (max - min);
1070   random->std = std / (max - min);
1071
1072   if (random->mean * (1 - random->mean) < random->std * random->std)
1073     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1074            random->mean, random->std);
1075
1076   XBT_DEBUG
1077       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1078        random_id, random->min, random->max, random->mean, random->std,
1079        (int)random->generator, random->seed, random_radical);
1080
1081   if (!random_value)
1082     random_value = xbt_dict_new_homogeneous(free);
1083
1084   if (!strcmp(random_radical, "")) {
1085     res = random_generate(random);
1086     rd_value = bprintf("%f", res);
1087     xbt_dict_set(random_value, random_id, rd_value, NULL);
1088   } else {
1089     radical_elements = xbt_str_split(random_radical, ",");
1090     xbt_dynar_foreach(radical_elements, iter, groups) {
1091       radical_ends = xbt_str_split(groups, "-");
1092       switch (xbt_dynar_length(radical_ends)) {
1093       case 1:
1094         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1095                    "Custom Random '%s' already exists !", random_id);
1096         res = random_generate(random);
1097         tmpbuf =
1098             bprintf("%s%d", random_id,
1099                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1100         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1101         xbt_free(tmpbuf);
1102         break;
1103
1104       case 2:
1105         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1106         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1107         for (i = start; i <= end; i++) {
1108           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1109                      "Custom Random '%s' already exists !", bprintf("%s%d",
1110                                                                     random_id,
1111                                                                     i));
1112           res = random_generate(random);
1113           tmpbuf = bprintf("%s%d", random_id, i);
1114           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1115           xbt_free(tmpbuf);
1116         }
1117         break;
1118       default:
1119         XBT_CRITICAL("Malformed radical");
1120         break;
1121       }
1122       res = random_generate(random);
1123       rd_name = bprintf("%s_router", random_id);
1124       rd_value = bprintf("%f", res);
1125       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1126
1127       xbt_dynar_free(&radical_ends);
1128     }
1129     free(rd_name);
1130     xbt_dynar_free(&radical_elements);
1131   }
1132 }
1133
1134 void routing_register_callbacks()
1135 {
1136   sg_platf_host_add_cb(parse_S_host);
1137   sg_platf_router_add_cb(parse_S_router);
1138   sg_platf_host_link_add_cb(parse_S_host_link);
1139   sg_platf_route_add_cb(parse_E_route);
1140   sg_platf_ASroute_add_cb(parse_E_ASroute);
1141   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1142   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1143
1144   sg_platf_cluster_add_cb(routing_parse_cluster);
1145   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1146
1147   sg_platf_peer_add_cb(routing_parse_peer);
1148   sg_platf_postparse_add_cb(routing_parse_postparse);
1149
1150   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1151   sg_platf_AS_end_add_cb(routing_AS_end);
1152   sg_platf_AS_begin_add_cb(routing_AS_begin);
1153
1154   sg_platf_trace_add_cb(routing_parse_trace);
1155   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1156
1157 #ifdef HAVE_TRACING
1158   instr_routing_define_callbacks();
1159 #endif
1160 }
1161
1162 /**
1163  * \brief Recursive function for finalize
1164  *
1165  * \param rc the source host name
1166  *
1167  * This fuction is call by "finalize". It allow to finalize the
1168  * AS or routing components. It delete all the structures.
1169  */
1170 static void finalize_rec(AS_t as) {
1171   xbt_dict_cursor_t cursor = NULL;
1172   char *key;
1173   AS_t elem;
1174
1175   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1176     finalize_rec(elem);
1177   }
1178
1179   as->finalize(as);
1180 }
1181
1182 /** \brief Frees all memory allocated by the routing module */
1183 void routing_exit(void) {
1184   if (!routing_platf)
1185     return;
1186   xbt_dynar_free(&routing_platf->last_route);
1187   finalize_rec(routing_platf->root);
1188   xbt_free(routing_platf);
1189 }