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 #include <pcre.h>               /* regular expression library */
  14
  15 /**
  16  * @ingroup SURF_build_api
  17  * @brief A library containing all known workstations
  18  */
  19 xbt_lib_t host_lib;
  20
  21 int ROUTING_HOST_LEVEL;         //Routing level
  22 int SURF_CPU_LEVEL;             //Surf cpu level
  23 int SURF_WKS_LEVEL;             //Surf workstation level
  24 int SIMIX_HOST_LEVEL;           //Simix level
  25 int MSG_HOST_LEVEL;             //Msg level
  26 int SD_HOST_LEVEL;              //Simdag level
  27 int COORD_HOST_LEVEL=0;         //Coordinates level
  28 int NS3_HOST_LEVEL;             //host node for ns3
  29
  30 xbt_dict_t watched_hosts_lib;
  31
  32 /**
  33  * @ingroup SURF_build_api
  34  * @brief A library containing all known links
  35  */
  36 xbt_lib_t link_lib;
  37 int SD_LINK_LEVEL;              //Simdag level
  38 int SURF_LINK_LEVEL;            //Surf level
  39 int NS3_LINK_LEVEL;             //link for ns3
  40
  41 xbt_lib_t as_router_lib;
  42 int ROUTING_ASR_LEVEL;          //Routing level
  43 int COORD_ASR_LEVEL;            //Coordinates level
  44 int NS3_ASR_LEVEL;              //host node for ns3
  45 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  46
  47 static xbt_dict_t random_value = NULL;
  48
  49 /** @brief Retrieve a routing edge from its name
  50  *
  51  * Routing edges are either CPU/workstation and routers, whatever
  52  */
  53 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  54     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  55     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  56   return net_elm;
  57 }
  58
  59 /* Global vars */
  60 routing_platf_t routing_platf = NULL;
  61 AS_t current_routing = NULL;
  62
  63 /* global parse functions */
  64 extern xbt_dynar_t mount_list;
  65
  66 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  67
  68 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  69 static void routing_parse_Srandom(void);        /* random bypass */
  70
  71 static void routing_parse_postparse(void);
  72
  73 /* this lines are only for replace use like index in the model table */
  74 typedef enum {
  75   SURF_MODEL_FULL = 0,
  76   SURF_MODEL_FLOYD,
  77   SURF_MODEL_DIJKSTRA,
  78   SURF_MODEL_DIJKSTRACACHE,
  79   SURF_MODEL_NONE,
  80   SURF_MODEL_RULEBASED,
  81   SURF_MODEL_VIVALDI,
  82   SURF_MODEL_CLUSTER
  83 } e_routing_types;
  84
  85 struct s_model_type routing_models[] = {
  86   {"Full",
  87    "Full routing data (fast, large memory requirements, fully expressive)",
  88    model_full_create, model_full_end},
  89   {"Floyd",
  90    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  91    model_floyd_create, model_floyd_end},
  92   {"Dijkstra",
  93    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  94    model_dijkstra_create, model_dijkstra_both_end},
  95   {"DijkstraCache",
  96    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  97    model_dijkstracache_create, model_dijkstra_both_end},
  98   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  99    model_none_create,  NULL},
 100   {"RuleBased", "Rule-Based routing data (...)",
 101    model_rulebased_create, NULL},
 102   {"Vivaldi", "Vivaldi routing",
 103    model_vivaldi_create, NULL},
 104   {"Cluster", "Cluster routing",
 105    model_cluster_create, NULL},
 106   {NULL, NULL, NULL, NULL}
 107 };
 108
 109 /**
 110  * \brief Add a "host_link" to the network element list
 111  */
 112 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 113 {
 114   sg_routing_edge_t info = NULL;
 115   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 116   xbt_assert(info, "Host '%s' not found!",host->id);
 117   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 118       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 119       "You have to be in model Cluster to use tag host_link!");
 120
 121   s_surf_parsing_link_up_down_t link_up_down;
 122   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 123   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 124
 125   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 126   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 127
 128   if(!current_routing->link_up_down_list)
 129     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 130
 131   // If dynar is is greater than edge id and if the host_link is already defined
 132   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 133       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 134     xbt_die("Host_link for '%s' is already defined!",host->id);
 135
 136   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 137   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 138 }
 139
 140 /**
 141  * \brief Add a "host" to the network element list
 142  */
 143 static void parse_S_host(sg_platf_host_cbarg_t host)
 144 {
 145   sg_routing_edge_t info = NULL;
 146   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 147     current_routing->hierarchy = SURF_ROUTING_BASE;
 148   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 149              "Reading a host, processing unit \"%s\" already exists", host->id);
 150
 151   info = xbt_new0(s_routing_edge_t, 1);
 152   info->rc_component = current_routing;
 153   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 154   info->name = xbt_strdup(host->id);
 155   info->id = current_routing->parse_PU(current_routing, (void *) info);
 156   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 157   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 158
 159   if(mount_list){
 160     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 161     mount_list = NULL;
 162   }
 163
 164   if (host->coord && strcmp(host->coord, "")) {
 165     unsigned int cursor;
 166     char*str;
 167
 168     if (!COORD_HOST_LEVEL)
 169       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 170     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 171     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 172     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 173     xbt_dynar_foreach(ctn_str,cursor, str) {
 174       double val = atof(str);
 175       xbt_dynar_push(ctn,&val);
 176     }
 177     xbt_dynar_shrink(ctn, 0);
 178     xbt_dynar_free(&ctn_str);
 179     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 180     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 181   }
 182 }
 183
 184 /**
 185  * \brief Add a "router" to the network element list
 186  */
 187 static void parse_S_router(sg_platf_router_cbarg_t router)
 188 {
 189   sg_routing_edge_t info = NULL;
 190   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 191     current_routing->hierarchy = SURF_ROUTING_BASE;
 192   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 193              "Reading a router, processing unit \"%s\" already exists",
 194              router->id);
 195
 196   info = xbt_new0(s_routing_edge_t, 1);
 197   info->rc_component = current_routing;
 198   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 199   info->name = xbt_strdup(router->id);
 200   info->id = current_routing->parse_PU(current_routing, (void *) info);
 201   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 202   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 203
 204   if (router->coord && strcmp(router->coord, "")) {
 205     unsigned int cursor;
 206     char*str;
 207
 208     if (!COORD_ASR_LEVEL)
 209       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 210     /* Pre-parse the host coordinates */
 211     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 212     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 213     xbt_dynar_foreach(ctn_str,cursor, str) {
 214       double val = atof(str);
 215       xbt_dynar_push(ctn,&val);
 216     }
 217     xbt_dynar_shrink(ctn, 0);
 218     xbt_dynar_free(&ctn_str);
 219     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 220     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 221   }
 222 }
 223
 224 /**
 225  * \brief Store the route by calling the set_route function of the current routing component
 226  */
 227 static void parse_E_route(sg_platf_route_cbarg_t route)
 228 {
 229   xbt_assert(current_routing->parse_route,
 230              "no defined method \"set_route\" in \"%s\"",
 231              current_routing->name);
 232
 233   current_routing->parse_route(current_routing, route);
 234 }
 235
 236 /**
 237  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 238  */
 239 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 240 {
 241   xbt_assert(current_routing->parse_ASroute,
 242              "no defined method \"set_ASroute\" in \"%s\"",
 243              current_routing->name);
 244   current_routing->parse_ASroute(current_routing, ASroute);
 245 }
 246
 247 /**
 248  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 249  */
 250 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 251 {
 252   xbt_assert(current_routing->parse_bypassroute,
 253              "Bypassing mechanism not implemented by routing '%s'",
 254              current_routing->name);
 255
 256   current_routing->parse_bypassroute(current_routing, route);
 257 }
 258
 259 /**
 260  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 261  */
 262 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 263 {
 264   xbt_assert(current_routing->parse_bypassroute,
 265              "Bypassing mechanism not implemented by routing '%s'",
 266              current_routing->name);
 267   current_routing->parse_bypassroute(current_routing, ASroute);
 268 }
 269
 270 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 271 {
 272   tmgr_trace_t tmgr_trace;
 273   if (!trace->file || strcmp(trace->file, "") != 0) {
 274     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 275   } else if (strcmp(trace->pc_data, "") == 0) {
 276     tmgr_trace = NULL;
 277   } else {
 278     tmgr_trace =
 279           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 280                                      trace->periodicity);
 281   }
 282   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 283 }
 284
 285 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 286 {
 287   xbt_assert(xbt_dict_get_or_null
 288               (traces_set_list, trace_connect->trace),
 289               "Cannot connect trace %s to %s: trace unknown",
 290               trace_connect->trace,
 291               trace_connect->element);
 292
 293   switch (trace_connect->kind) {
 294   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 295     xbt_dict_set(trace_connect_list_host_avail,
 296         trace_connect->trace,
 297         xbt_strdup(trace_connect->element), NULL);
 298     break;
 299   case SURF_TRACE_CONNECT_KIND_POWER:
 300     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 301         xbt_strdup(trace_connect->element), NULL);
 302     break;
 303   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 304     xbt_dict_set(trace_connect_list_link_avail,
 305         trace_connect->trace,
 306         xbt_strdup(trace_connect->element), NULL);
 307     break;
 308   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 309     xbt_dict_set(trace_connect_list_bandwidth,
 310         trace_connect->trace,
 311         xbt_strdup(trace_connect->element), NULL);
 312     break;
 313   case SURF_TRACE_CONNECT_KIND_LATENCY:
 314     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 315         xbt_strdup(trace_connect->element), NULL);
 316     break;
 317   default:
 318     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 319         trace_connect->trace, trace_connect->element);
 320     break;
 321   }
 322 }
 323
 324 extern int _surf_init_status; /* yay, this is an horrible hack */
 325
 326 /**
 327  * \brief Make a new routing component to the platform
 328  *
 329  * Add a new autonomous system to the platform. Any elements (such as host,
 330  * router or sub-AS) added after this call and before the corresponding call
 331  * to sg_platf_new_AS_close() will be added to this AS.
 332  *
 333  * Once this function was called, the configuration concerning the used
 334  * models cannot be changed anymore.
 335  *
 336  * @param AS_id name of this autonomous system. Must be unique in the platform
 337  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 338  */
 339 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 340 {
 341   XBT_DEBUG("routing_AS_begin");
 342   AS_t new_as;
 343   routing_model_description_t model = NULL;
 344
 345   xbt_assert(!xbt_lib_get_or_null
 346              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 347              "The AS \"%s\" already exists", AS->id);
 348
 349   _surf_init_status = 2; /* horrible hack: direct access to the global controlling the level of configuration to prevent any further config */
 350
 351   /* search the routing model */
 352   switch(AS->routing){
 353     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 354     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 355     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 356     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 357     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 358     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 359     case A_surfxml_AS_routing_RuleBased:     model = &routing_models[SURF_MODEL_RULEBASED];break;
 360     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 361     default: xbt_die("Not a valid model!!!");
 362     break;
 363   }
 364
 365   /* make a new routing component */
 366   new_as = (AS_t) model->create();
 367   new_as->model_desc = model;
 368   new_as->hierarchy = SURF_ROUTING_NULL;
 369   new_as->name = xbt_strdup(AS->id);
 370
 371   sg_routing_edge_t info = NULL;
 372   info = xbt_new0(s_routing_edge_t, 1);
 373
 374   if (current_routing == NULL && routing_platf->root == NULL) {
 375
 376     /* it is the first one */
 377     new_as->routing_father = NULL;
 378     routing_platf->root = new_as;
 379     info->id = -1;
 380   } else if (current_routing != NULL && routing_platf->root != NULL) {
 381
 382     xbt_assert(!xbt_dict_get_or_null
 383                (current_routing->routing_sons, AS->id),
 384                "The AS \"%s\" already exists", AS->id);
 385     /* it is a part of the tree */
 386     new_as->routing_father = current_routing;
 387     /* set the father behavior */
 388     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 389       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 390     /* add to the sons dictionary */
 391     xbt_dict_set(current_routing->routing_sons, AS->id,
 392                  (void *) new_as, NULL);
 393     /* add to the father element list */
 394     info->id = current_routing->parse_AS(current_routing, (void *) info);
 395   } else {
 396     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 397   }
 398
 399   info->rc_component = new_as->routing_father;
 400   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 401   info->name = new_as->name;
 402
 403   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 404               (void *) info);
 405   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 406
 407   /* set the new current component of the tree */
 408   current_routing = new_as;
 409   current_routing->net_elem = info;
 410
 411 }
 412
 413 /**
 414  * \brief Specify that the current description of AS is finished
 415  *
 416  * Once you've declared all the content of your AS, you have to close
 417  * it with this call. Your AS is not usable until you call this function.
 418  *
 419  * @fixme: this call is not as robust as wanted: bad things WILL happen
 420  * if you call it twice for the same AS, or if you forget calling it, or
 421  * even if you add stuff to a closed AS
 422  *
 423  */
 424 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 425 {
 426
 427   if (current_routing == NULL) {
 428     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 429   } else {
 430     if (current_routing->model_desc->end)
 431       current_routing->model_desc->end(current_routing);
 432     current_routing = current_routing->routing_father;
 433   }
 434 }
 435
 436 /* Aux Business methods */
 437
 438 /**
 439  * \brief Get the AS father and the first elements of the chain
 440  *
 441  * \param src the source host name
 442  * \param dst the destination host name
 443  *
 444  * Get the common father of the to processing units, and the first different
 445  * father in the chain
 446  */
 447 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 448                             AS_t * res_father,
 449                             AS_t * res_src,
 450                             AS_t * res_dst)
 451 {
 452   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 453 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 454   AS_t src_as, dst_as;
 455   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 456   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 457   int index_src = 0;
 458   int index_dst = 0;
 459   AS_t current;
 460   AS_t current_src;
 461   AS_t current_dst;
 462   AS_t father;
 463
 464   /* (1) find the as where the src and dst are located */
 465   sg_routing_edge_t src_data = src;
 466   sg_routing_edge_t dst_data = dst;
 467   src_as = src_data->rc_component;
 468   dst_as = dst_data->rc_component;
 469 #ifndef NDEBUG
 470   char* src_name = src_data->name;
 471   char* dst_name = dst_data->name;
 472 #endif
 473
 474   xbt_assert(src_as && dst_as,
 475              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 476
 477   /* (2) find the path to the root routing component */
 478   for (current = src_as; current != NULL; current = current->routing_father) {
 479     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 480       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 481     path_src[index_src++] = current;
 482   }
 483   for (current = dst_as; current != NULL; current = current->routing_father) {
 484     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 485       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 486     path_dst[index_dst++] = current;
 487   }
 488
 489   /* (3) find the common father */
 490   do {
 491     current_src = path_src[--index_src];
 492     current_dst = path_dst[--index_dst];
 493   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 494
 495   /* (4) they are not in the same routing component, make the path */
 496   if (current_src == current_dst)
 497     father = current_src;
 498   else
 499     father = path_src[index_src + 1];
 500
 501   /* (5) result generation */
 502   *res_father = father;         /* first the common father of src and dst */
 503   *res_src = current_src;       /* second the first different father of src */
 504   *res_dst = current_dst;       /* three  the first different father of dst */
 505
 506 #undef ELEMENTS_FATHER_MAXDEPTH
 507 }
 508
 509 /* Global Business methods */
 510
 511 /**
 512  * \brief Recursive function for get_route_latency
 513  *
 514  * \param src the source host name
 515  * \param dst the destination host name
 516  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 517  * \param *latency the latency, if needed
 518  *
 519  * This function is called by "get_route" and "get_latency". It allows to walk
 520  * recursively through the ASes tree.
 521  */
 522 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 523                                    xbt_dynar_t * links, double *latency)
 524 {
 525   s_sg_platf_route_cbarg_t route;
 526   memset(&route,0,sizeof(route));
 527
 528   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 529   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 530
 531   /* Find how src and dst are interconnected */
 532   AS_t common_father, src_father, dst_father;
 533   elements_father(src, dst, &common_father, &src_father, &dst_father);
 534   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 535       common_father->name,src_father->name,dst_father->name);
 536
 537   /* Check whether a direct bypass is defined */
 538   sg_platf_route_cbarg_t e_route_bypass = NULL;
 539   if (common_father->get_bypass_route)
 540     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 541
 542   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 543   if (e_route_bypass) {
 544     xbt_dynar_merge(links, &e_route_bypass->link_list);
 545     generic_free_route(e_route_bypass);
 546     return;
 547   }
 548
 549   /* If src and dst are in the same AS, life is good */
 550   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 551     route.link_list = *links;
 552     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 553     // if vivaldi latency+=vivaldi(src,dst)
 554     return;
 555   }
 556
 557   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 558
 559   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 560   // Find the net_card corresponding to father
 561   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 562   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 563
 564   common_father->get_route_and_latency(common_father,
 565                                        src_father_net_elm, dst_father_net_elm,
 566                                        &route, latency);
 567
 568   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 569       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 570
 571   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 572   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 573
 574   /* If source gateway is not our source, we have to recursively find our way up to this point */
 575   if (src != src_gateway_net_elm)
 576     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 577   xbt_dynar_merge(links, &route.link_list);
 578
 579   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 580   if (dst_gateway_net_elm != dst)
 581     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 582
 583   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 584 }
 585
 586 /**
 587  * \brief Find a route between hosts
 588  *
 589  * \param src the network_element_t for src host
 590  * \param dst the network_element_t for dst host
 591  * \param route where to store the list of links.
 592  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 593  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 594  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 595  * \pre route!=NULL
 596  *
 597  * walk through the routing components tree and find a route between hosts
 598  * by calling the differents "get_route" functions in each routing component.
 599  */
 600 void routing_get_route_and_latency(sg_routing_edge_t src,
 601                                    sg_routing_edge_t dst,
 602                                    xbt_dynar_t * route, double *latency)
 603 {
 604   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 605   if (!*route) {
 606     xbt_dynar_reset(routing_platf->last_route);
 607     *route = routing_platf->last_route;
 608   }
 609
 610   _get_route_and_latency(src, dst, route, latency);
 611
 612   xbt_assert(!latency || *latency >= 0.0,
 613              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 614 }
 615
 616 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 617 {
 618   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 619
 620   //adding my one link routes
 621   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 622   if (onelink_mine)
 623     xbt_dynar_merge(&ret,&onelink_mine);
 624
 625   //recursing
 626   char *key;
 627   xbt_dict_cursor_t cursor = NULL;
 628   AS_t rc_child;
 629   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 630     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 631     if (onelink_child)
 632       xbt_dynar_merge(&ret,&onelink_child);
 633   }
 634   return ret;
 635 }
 636
 637 static xbt_dynar_t get_onelink_routes(void)
 638 {
 639   return recursive_get_onelink_routes(routing_platf->root);
 640 }
 641
 642 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 643 {
 644   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 645   if (rc)
 646     return rc->rc_type;
 647
 648   return SURF_NETWORK_ELEMENT_NULL;
 649 }
 650
 651 /**
 652  * \brief Generic method: create the global routing schema
 653  *
 654  * Make a global routing structure and set all the parsing functions.
 655  */
 656 void routing_model_create( void *loopback)
 657 {
 658   /* config the uniq global routing */
 659   routing_platf = xbt_new0(s_routing_platf_t, 1);
 660   routing_platf->root = NULL;
 661   routing_platf->get_onelink_routes = get_onelink_routes;
 662   routing_platf->loopback = loopback;
 663   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 664   /* no current routing at moment */
 665   current_routing = NULL;
 666 }
 667
 668
 669 /* ************************************************** */
 670 /* ********** PATERN FOR NEW ROUTING **************** */
 671
 672 /* The minimal configuration of a new routing model need the next functions,
 673  * also you need to set at the start of the file, the new model in the model
 674  * list. Remember keep the null ending of the list.
 675  */
 676 /*** Routing model structure ***/
 677 // typedef struct {
 678 //   s_routing_component_t generic_routing;
 679 //   /* things that your routing model need */
 680 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 681
 682 /*** Parse routing model functions ***/
 683 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 684 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 685 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 686 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 687 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 688
 689 /*** Business methods ***/
 690 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 691 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 692 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 693
 694 /*** Creation routing model functions ***/
 695 // static void* model_NEW_create(void) {
 696 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 697 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 698 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 699 //   new_component->generic_routing.set_route = model_NEW_set_route;
 700 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 701 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 702 //   new_component->generic_routing.get_route = NEW_get_route;
 703 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 704 //   new_component->generic_routing.finalize = NEW_finalize;
 705 //   /* initialization of internal structures */
 706 //   return new_component;
 707 // } /* mandatory */
 708 // static void  model_NEW_load(void) {}   /* mandatory */
 709 // static void  model_NEW_unload(void) {} /* mandatory */
 710 // static void  model_NEW_end(void) {}    /* mandatory */
 711
 712 /* ************************************************************************** */
 713 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 714
 715 void routing_cluster_add_backbone(void* bb) {
 716   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 717         "You have to be in model Cluster to use tag backbone!");
 718   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 719   ((as_cluster_t)current_routing)->backbone = bb;
 720   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 721 }
 722
 723 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 724 {
 725   int start, end, i;
 726   char *groups , *host_id , *link_id = NULL;
 727   unsigned int iter;
 728   xbt_dynar_t radical_elements;
 729   xbt_dynar_t radical_ends;
 730
 731   //Make all hosts
 732   radical_elements = xbt_str_split(cabinet->radical, ",");
 733   xbt_dynar_foreach(radical_elements, iter, groups) {
 734
 735     radical_ends = xbt_str_split(groups, "-");
 736     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 737
 738     switch (xbt_dynar_length(radical_ends)) {
 739     case 1:
 740       end = start;
 741       break;
 742     case 2:
 743       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 744       break;
 745     default:
 746       surf_parse_error("Malformed radical");
 747       break;
 748     }
 749     s_sg_platf_host_cbarg_t host;
 750     memset(&host, 0, sizeof(host));
 751     host.initial_state = SURF_RESOURCE_ON;
 752     host.power_peak = cabinet->power;
 753     host.power_scale = 1.0;
 754     host.core_amount = 1;
 755
 756     s_sg_platf_link_cbarg_t link;
 757     memset(&link, 0, sizeof(link));
 758     link.state = SURF_RESOURCE_ON;
 759     link.policy = SURF_LINK_FULLDUPLEX;
 760     link.latency = cabinet->lat;
 761     link.bandwidth = cabinet->bw;
 762
 763     s_sg_platf_host_link_cbarg_t host_link;
 764     memset(&host_link, 0, sizeof(host_link));
 765
 766     for (i = start; i <= end; i++) {
 767       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 768       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 769       host.id = host_id;
 770       link.id = link_id;
 771       sg_platf_new_host(&host);
 772       sg_platf_new_link(&link);
 773
 774       char* link_up = bprintf("%s_UP",link_id);
 775       char* link_down = bprintf("%s_DOWN",link_id);
 776       host_link.id = host_id;
 777       host_link.link_up = link_up;
 778       host_link.link_down= link_down;
 779       sg_platf_new_host_link(&host_link);
 780
 781       free(host_id);
 782       free(link_id);
 783       free(link_up);
 784       free(link_down);
 785     }
 786
 787     xbt_dynar_free(&radical_ends);
 788   }
 789   xbt_dynar_free(&radical_elements);
 790 }
 791
 792 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 793 {
 794   char *host_id, *groups, *link_id = NULL;
 795   xbt_dict_t patterns = NULL;
 796
 797   s_sg_platf_host_cbarg_t host;
 798   s_sg_platf_link_cbarg_t link;
 799
 800   unsigned int iter;
 801   int start, end, i;
 802   xbt_dynar_t radical_elements;
 803   xbt_dynar_t radical_ends;
 804
 805   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 806       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 807     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 808     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 809     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 810     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 811   }
 812
 813   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 814   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 815   AS.id = cluster->id;
 816   AS.routing = A_surfxml_AS_routing_Cluster;
 817   sg_platf_new_AS_begin(&AS);
 818
 819   current_routing->link_up_down_list
 820             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 821
 822   //Make all hosts
 823   radical_elements = xbt_str_split(cluster->radical, ",");
 824   xbt_dynar_foreach(radical_elements, iter, groups) {
 825
 826     radical_ends = xbt_str_split(groups, "-");
 827     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 828
 829     switch (xbt_dynar_length(radical_ends)) {
 830     case 1:
 831       end = start;
 832       break;
 833     case 2:
 834       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 835       break;
 836     default:
 837       surf_parse_error("Malformed radical");
 838       break;
 839     }
 840     for (i = start; i <= end; i++) {
 841       host_id =
 842           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 843       link_id = bprintf("%s_link_%d", cluster->id, i);
 844
 845       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 846
 847       memset(&host, 0, sizeof(host));
 848       host.id = host_id;
 849       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 850         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 851         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 852         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 853         host.power_trace = tmgr_trace_new_from_file(avail_file);
 854         xbt_free(avail_file);
 855       } else {
 856         XBT_DEBUG("\tavailability_file=\"\"");
 857       }
 858
 859       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 860         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 861         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 862         host.state_trace = tmgr_trace_new_from_file(avail_file);
 863         xbt_free(avail_file);
 864       } else {
 865         XBT_DEBUG("\tstate_file=\"\"");
 866       }
 867
 868       host.power_peak = cluster->power;
 869       host.power_scale = 1.0;
 870       host.core_amount = cluster->core_amount;
 871       host.initial_state = SURF_RESOURCE_ON;
 872       host.coord = "";
 873       sg_platf_new_host(&host);
 874       XBT_DEBUG("</host>");
 875
 876       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 877                 cluster->bw, cluster->lat);
 878
 879       memset(&link, 0, sizeof(link));
 880       link.id = link_id;
 881       link.bandwidth = cluster->bw;
 882       link.latency = cluster->lat;
 883       link.state = SURF_RESOURCE_ON;
 884       link.policy = cluster->sharing_policy;
 885       sg_platf_new_link(&link);
 886
 887       s_surf_parsing_link_up_down_t info;
 888
 889       if (link.policy == SURF_LINK_FULLDUPLEX) {
 890         char *tmp_link = bprintf("%s_UP", link_id);
 891         info.link_up =
 892             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 893         free(tmp_link);
 894         tmp_link = bprintf("%s_DOWN", link_id);
 895         info.link_down =
 896             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 897         free(tmp_link);
 898       } else {
 899         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 900         info.link_down = info.link_up;
 901       }
 902       xbt_dynar_push(current_routing->link_up_down_list,&info);
 903       xbt_free(link_id);
 904       xbt_free(host_id);
 905     }
 906
 907     xbt_dynar_free(&radical_ends);
 908   }
 909   xbt_dynar_free(&radical_elements);
 910
 911   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 912   // and it's very useful to connect clusters together
 913   XBT_DEBUG(" ");
 914   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 915   char *newid = NULL;
 916   s_sg_platf_router_cbarg_t router;
 917   memset(&router, 0, sizeof(router));
 918   router.id = cluster->router_id;
 919   router.coord = "";
 920   if (!router.id || !strcmp(router.id, ""))
 921     router.id = newid =
 922         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 923                 cluster->suffix);
 924   sg_platf_new_router(&router);
 925   free(newid);
 926
 927   //Make the backbone
 928   if ((cluster->bb_bw != 0) && (cluster->bb_lat != 0)) {
 929     char *link_backbone = bprintf("%s_backbone", cluster->id);
 930     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 931               cluster->bb_bw, cluster->bb_lat);
 932
 933     memset(&link, 0, sizeof(link));
 934     link.id = link_backbone;
 935     link.bandwidth = cluster->bb_bw;
 936     link.latency = cluster->bb_lat;
 937     link.state = SURF_RESOURCE_ON;
 938     link.policy = cluster->bb_sharing_policy;
 939
 940     sg_platf_new_link(&link);
 941
 942     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 943
 944     free(link_backbone);
 945   }
 946
 947   XBT_DEBUG("</AS>");
 948   sg_platf_new_AS_end();
 949   XBT_DEBUG(" ");
 950   xbt_dict_free(&patterns); // no op if it were never set
 951 }
 952
 953 static void routing_parse_postparse(void) {
 954   xbt_dict_free(&random_value);
 955 }
 956
 957 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 958 {
 959   char *host_id = NULL;
 960   char *link_id;
 961
 962   XBT_DEBUG(" ");
 963   host_id = HOST_PEER(peer->id);
 964   link_id = LINK_PEER(peer->id);
 965
 966   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 967   s_sg_platf_host_cbarg_t host;
 968   memset(&host, 0, sizeof(host));
 969   host.initial_state = SURF_RESOURCE_ON;
 970   host.id = host_id;
 971   host.power_peak = peer->power;
 972   host.power_scale = 1.0;
 973   host.power_trace = peer->availability_trace;
 974   host.state_trace = peer->state_trace;
 975   host.core_amount = 1;
 976   host.coord = peer->coord;
 977   sg_platf_new_host(&host);
 978
 979   s_sg_platf_link_cbarg_t link;
 980   memset(&link, 0, sizeof(link));
 981   link.state = SURF_RESOURCE_ON;
 982   link.policy = SURF_LINK_SHARED;
 983   link.latency = peer->lat;
 984
 985   char* link_up = bprintf("%s_UP",link_id);
 986   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
 987             peer->bw_out, peer->lat);
 988   link.id = link_up;
 989   link.bandwidth = peer->bw_out;
 990   sg_platf_new_link(&link);
 991
 992   char* link_down = bprintf("%s_DOWN",link_id);
 993   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
 994             peer->bw_in, peer->lat);
 995   link.id = link_down;
 996   link.bandwidth = peer->bw_in;
 997   sg_platf_new_link(&link);
 998
 999   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1000   s_sg_platf_host_link_cbarg_t host_link;
1001   memset(&host_link, 0, sizeof(host_link));
1002   host_link.id = host_id;
1003   host_link.link_up = link_up;
1004   host_link.link_down= link_down;
1005   sg_platf_new_host_link(&host_link);
1006
1007   XBT_DEBUG(" ");
1008
1009   //xbt_dynar_free(&tab_elements_num);
1010   free(host_id);
1011   free(link_id);
1012   free(link_up);
1013   free(link_down);
1014 }
1015
1016 static void routing_parse_Srandom(void)
1017 {
1018   double mean, std, min, max, seed;
1019   char *random_id = A_surfxml_random_id;
1020   char *random_radical = A_surfxml_random_radical;
1021   char *rd_name = NULL;
1022   char *rd_value;
1023   mean = surf_parse_get_double(A_surfxml_random_mean);
1024   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1025   min = surf_parse_get_double(A_surfxml_random_min);
1026   max = surf_parse_get_double(A_surfxml_random_max);
1027   seed = surf_parse_get_double(A_surfxml_random_seed);
1028
1029   double res = 0;
1030   int i = 0;
1031   random_data_t random = xbt_new0(s_random_data_t, 1);
1032   char *tmpbuf;
1033
1034   xbt_dynar_t radical_elements;
1035   unsigned int iter;
1036   char *groups;
1037   int start, end;
1038   xbt_dynar_t radical_ends;
1039
1040   switch (A_surfxml_random_generator) {
1041   case AU_surfxml_random_generator:
1042   case A_surfxml_random_generator_NONE:
1043     random->generator = NONE;
1044     break;
1045   case A_surfxml_random_generator_DRAND48:
1046     random->generator = DRAND48;
1047     break;
1048   case A_surfxml_random_generator_RAND:
1049     random->generator = RAND;
1050     break;
1051   case A_surfxml_random_generator_RNGSTREAM:
1052     random->generator = RNGSTREAM;
1053     break;
1054   default:
1055     surf_parse_error("Invalid random generator");
1056     break;
1057   }
1058   random->seed = seed;
1059   random->min = min;
1060   random->max = max;
1061
1062   /* Check user stupidities */
1063   if (max < min)
1064     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1065   if (mean < min)
1066     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1067   if (mean > max)
1068     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1069
1070   /* normalize the mean and standard deviation before storing */
1071   random->mean = (mean - min) / (max - min);
1072   random->std = std / (max - min);
1073
1074   if (random->mean * (1 - random->mean) < random->std * random->std)
1075     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1076            random->mean, random->std);
1077
1078   XBT_DEBUG
1079       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1080        random_id, random->min, random->max, random->mean, random->std,
1081        (int)random->generator, random->seed, random_radical);
1082
1083   if (!random_value)
1084     random_value = xbt_dict_new_homogeneous(free);
1085
1086   if (!strcmp(random_radical, "")) {
1087     res = random_generate(random);
1088     rd_value = bprintf("%f", res);
1089     xbt_dict_set(random_value, random_id, rd_value, NULL);
1090   } else {
1091     radical_elements = xbt_str_split(random_radical, ",");
1092     xbt_dynar_foreach(radical_elements, iter, groups) {
1093       radical_ends = xbt_str_split(groups, "-");
1094       switch (xbt_dynar_length(radical_ends)) {
1095       case 1:
1096         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1097                    "Custom Random '%s' already exists !", random_id);
1098         res = random_generate(random);
1099         tmpbuf =
1100             bprintf("%s%d", random_id,
1101                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1102         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1103         xbt_free(tmpbuf);
1104         break;
1105
1106       case 2:
1107         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1108         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1109         for (i = start; i <= end; i++) {
1110           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1111                      "Custom Random '%s' already exists !", bprintf("%s%d",
1112                                                                     random_id,
1113                                                                     i));
1114           res = random_generate(random);
1115           tmpbuf = bprintf("%s%d", random_id, i);
1116           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1117           xbt_free(tmpbuf);
1118         }
1119         break;
1120       default:
1121         XBT_CRITICAL("Malformed radical");
1122         break;
1123       }
1124       res = random_generate(random);
1125       rd_name = bprintf("%s_router", random_id);
1126       rd_value = bprintf("%f", res);
1127       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1128
1129       xbt_dynar_free(&radical_ends);
1130     }
1131     free(rd_name);
1132     xbt_dynar_free(&radical_elements);
1133   }
1134 }
1135
1136 void routing_register_callbacks()
1137 {
1138   sg_platf_host_add_cb(parse_S_host);
1139   sg_platf_router_add_cb(parse_S_router);
1140   sg_platf_host_link_add_cb(parse_S_host_link);
1141   sg_platf_route_add_cb(parse_E_route);
1142   sg_platf_ASroute_add_cb(parse_E_ASroute);
1143   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1144   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1145
1146   sg_platf_cluster_add_cb(routing_parse_cluster);
1147   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1148
1149   sg_platf_peer_add_cb(routing_parse_peer);
1150   sg_platf_postparse_add_cb(routing_parse_postparse);
1151
1152   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1153   sg_platf_AS_end_add_cb(routing_AS_end);
1154   sg_platf_AS_begin_add_cb(routing_AS_begin);
1155
1156   sg_platf_trace_add_cb(routing_parse_trace);
1157   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1158
1159 #ifdef HAVE_TRACING
1160   instr_routing_define_callbacks();
1161 #endif
1162 }
1163
1164 /**
1165  * \brief Recursive function for finalize
1166  *
1167  * \param rc the source host name
1168  *
1169  * This fuction is call by "finalize". It allow to finalize the
1170  * AS or routing components. It delete all the structures.
1171  */
1172 static void finalize_rec(AS_t as) {
1173   xbt_dict_cursor_t cursor = NULL;
1174   char *key;
1175   AS_t elem;
1176
1177   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1178     finalize_rec(elem);
1179   }
1180
1181   as->finalize(as);
1182 }
1183
1184 /** \brief Frees all memory allocated by the routing module */
1185 void routing_exit(void) {
1186   if (!routing_platf)
1187     return;
1188   xbt_dynar_free(&routing_platf->last_route);
1189   finalize_rec(routing_platf->root);
1190   xbt_free(routing_platf);
1191 }