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 host level
  23 int SIMIX_STORAGE_LEVEL;        //Simix storage level
  24 int MSG_HOST_LEVEL;             //Msg host level
  25 int MSG_STORAGE_LEVEL;          //Msg storage level
  26 int SD_HOST_LEVEL;              //Simdag host level
  27 int SD_STORAGE_LEVEL;           //Simdag storage level
  28 int COORD_HOST_LEVEL=0;         //Coordinates level
  29 int NS3_HOST_LEVEL;             //host node for ns3
  30
  31 xbt_dict_t watched_hosts_lib;
  32
  33 /**
  34  * @ingroup SURF_build_api
  35  * @brief A library containing all known links
  36  */
  37 xbt_lib_t link_lib;
  38 int SD_LINK_LEVEL;              //Simdag level
  39 int SURF_LINK_LEVEL;            //Surf level
  40 int NS3_LINK_LEVEL;             //link for ns3
  41
  42 xbt_lib_t as_router_lib;
  43 int ROUTING_ASR_LEVEL;          //Routing level
  44 int COORD_ASR_LEVEL;            //Coordinates level
  45 int NS3_ASR_LEVEL;              //host node for ns3
  46 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  47
  48 static xbt_dict_t random_value = NULL;
  49
  50 /** @brief Retrieve a routing edge from its name
  51  *
  52  * Routing edges are either CPU/workstation and routers, whatever
  53  */
  54 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  55     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  56     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  57   return net_elm;
  58 }
  59
  60 /* Global vars */
  61 routing_platf_t routing_platf = NULL;
  62 AS_t current_routing = NULL;
  63
  64 /* global parse functions */
  65 extern xbt_dynar_t mount_list;
  66
  67 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  68
  69 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  70 static void routing_parse_Srandom(void);        /* random bypass */
  71
  72 static void routing_parse_postparse(void);
  73
  74 /* this lines are only for replace use like index in the model table */
  75 typedef enum {
  76   SURF_MODEL_FULL = 0,
  77   SURF_MODEL_FLOYD,
  78   SURF_MODEL_DIJKSTRA,
  79   SURF_MODEL_DIJKSTRACACHE,
  80   SURF_MODEL_NONE,
  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   {"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   link_up_down.limiter_link = NULL;
 123   link_up_down.loopback_link = NULL;
 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 _sg_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   _sg_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_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 360     default: xbt_die("Not a valid model!!!");
 361     break;
 362   }
 363
 364   /* make a new routing component */
 365   new_as = (AS_t) model->create();
 366   new_as->model_desc = model;
 367   new_as->hierarchy = SURF_ROUTING_NULL;
 368   new_as->name = xbt_strdup(AS->id);
 369
 370   sg_routing_edge_t info = NULL;
 371   info = xbt_new0(s_routing_edge_t, 1);
 372
 373   if (current_routing == NULL && routing_platf->root == NULL) {
 374
 375     /* it is the first one */
 376     new_as->routing_father = NULL;
 377     routing_platf->root = new_as;
 378     info->id = -1;
 379   } else if (current_routing != NULL && routing_platf->root != NULL) {
 380
 381     xbt_assert(!xbt_dict_get_or_null
 382                (current_routing->routing_sons, AS->id),
 383                "The AS \"%s\" already exists", AS->id);
 384     /* it is a part of the tree */
 385     new_as->routing_father = current_routing;
 386     /* set the father behavior */
 387     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 388       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 389     /* add to the sons dictionary */
 390     xbt_dict_set(current_routing->routing_sons, AS->id,
 391                  (void *) new_as, NULL);
 392     /* add to the father element list */
 393     info->id = current_routing->parse_AS(current_routing, (void *) info);
 394   } else {
 395     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 396   }
 397
 398   info->rc_component = new_as->routing_father;
 399   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 400   info->name = new_as->name;
 401
 402   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 403               (void *) info);
 404   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 405
 406   /* set the new current component of the tree */
 407   current_routing = new_as;
 408   current_routing->net_elem = info;
 409
 410 }
 411
 412 /**
 413  * \brief Specify that the current description of AS is finished
 414  *
 415  * Once you've declared all the content of your AS, you have to close
 416  * it with this call. Your AS is not usable until you call this function.
 417  *
 418  * @fixme: this call is not as robust as wanted: bad things WILL happen
 419  * if you call it twice for the same AS, or if you forget calling it, or
 420  * even if you add stuff to a closed AS
 421  *
 422  */
 423 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 424 {
 425
 426   if (current_routing == NULL) {
 427     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 428   } else {
 429     if (current_routing->model_desc->end)
 430       current_routing->model_desc->end(current_routing);
 431     current_routing = current_routing->routing_father;
 432   }
 433 }
 434
 435 /* Aux Business methods */
 436
 437 /**
 438  * \brief Get the AS father and the first elements of the chain
 439  *
 440  * \param src the source host name
 441  * \param dst the destination host name
 442  *
 443  * Get the common father of the to processing units, and the first different
 444  * father in the chain
 445  */
 446 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 447                             AS_t * res_father,
 448                             AS_t * res_src,
 449                             AS_t * res_dst)
 450 {
 451   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 452 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 453   AS_t src_as, dst_as;
 454   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 455   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 456   int index_src = 0;
 457   int index_dst = 0;
 458   AS_t current;
 459   AS_t current_src;
 460   AS_t current_dst;
 461   AS_t father;
 462
 463   /* (1) find the as where the src and dst are located */
 464   sg_routing_edge_t src_data = src;
 465   sg_routing_edge_t dst_data = dst;
 466   src_as = src_data->rc_component;
 467   dst_as = dst_data->rc_component;
 468 #ifndef NDEBUG
 469   char* src_name = src_data->name;
 470   char* dst_name = dst_data->name;
 471 #endif
 472
 473   xbt_assert(src_as && dst_as,
 474              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 475
 476   /* (2) find the path to the root routing component */
 477   for (current = src_as; current != NULL; current = current->routing_father) {
 478     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 479       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 480     path_src[index_src++] = current;
 481   }
 482   for (current = dst_as; current != NULL; current = current->routing_father) {
 483     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 484       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 485     path_dst[index_dst++] = current;
 486   }
 487
 488   /* (3) find the common father */
 489   do {
 490     current_src = path_src[--index_src];
 491     current_dst = path_dst[--index_dst];
 492   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 493
 494   /* (4) they are not in the same routing component, make the path */
 495   if (current_src == current_dst)
 496     father = current_src;
 497   else
 498     father = path_src[index_src + 1];
 499
 500   /* (5) result generation */
 501   *res_father = father;         /* first the common father of src and dst */
 502   *res_src = current_src;       /* second the first different father of src */
 503   *res_dst = current_dst;       /* three  the first different father of dst */
 504
 505 #undef ELEMENTS_FATHER_MAXDEPTH
 506 }
 507
 508 /* Global Business methods */
 509
 510 /**
 511  * \brief Recursive function for get_route_latency
 512  *
 513  * \param src the source host name
 514  * \param dst the destination host name
 515  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 516  * \param *latency the latency, if needed
 517  *
 518  * This function is called by "get_route" and "get_latency". It allows to walk
 519  * recursively through the ASes tree.
 520  */
 521 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 522                                    xbt_dynar_t * links, double *latency)
 523 {
 524   s_sg_platf_route_cbarg_t route;
 525   memset(&route,0,sizeof(route));
 526
 527   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 528   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 529
 530   /* Find how src and dst are interconnected */
 531   AS_t common_father, src_father, dst_father;
 532   elements_father(src, dst, &common_father, &src_father, &dst_father);
 533   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 534       common_father->name,src_father->name,dst_father->name);
 535
 536   /* Check whether a direct bypass is defined */
 537   sg_platf_route_cbarg_t e_route_bypass = NULL;
 538   if (common_father->get_bypass_route)
 539     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 540
 541   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 542   if (e_route_bypass) {
 543     xbt_dynar_merge(links, &e_route_bypass->link_list);
 544     generic_free_route(e_route_bypass);
 545     return;
 546   }
 547
 548   /* If src and dst are in the same AS, life is good */
 549   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 550     route.link_list = *links;
 551     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 552     // if vivaldi latency+=vivaldi(src,dst)
 553     return;
 554   }
 555
 556   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 557
 558   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 559   // Find the net_card corresponding to father
 560   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 561   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 562
 563   common_father->get_route_and_latency(common_father,
 564                                        src_father_net_elm, dst_father_net_elm,
 565                                        &route, latency);
 566
 567   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 568       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 569
 570   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 571   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 572
 573   /* If source gateway is not our source, we have to recursively find our way up to this point */
 574   if (src != src_gateway_net_elm)
 575     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 576   xbt_dynar_merge(links, &route.link_list);
 577
 578   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 579   if (dst_gateway_net_elm != dst)
 580     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 581
 582   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 583 }
 584
 585 /**
 586  * \brief Find a route between hosts
 587  *
 588  * \param src the network_element_t for src host
 589  * \param dst the network_element_t for dst host
 590  * \param route where to store the list of links.
 591  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 592  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 593  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 594  * \pre route!=NULL
 595  *
 596  * walk through the routing components tree and find a route between hosts
 597  * by calling the differents "get_route" functions in each routing component.
 598  */
 599 void routing_get_route_and_latency(sg_routing_edge_t src,
 600                                    sg_routing_edge_t dst,
 601                                    xbt_dynar_t * route, double *latency)
 602 {
 603   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 604   if (!*route) {
 605     xbt_dynar_reset(routing_platf->last_route);
 606     *route = routing_platf->last_route;
 607   }
 608
 609   _get_route_and_latency(src, dst, route, latency);
 610
 611   xbt_assert(!latency || *latency >= 0.0,
 612              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 613 }
 614
 615 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 616 {
 617   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 618
 619   //adding my one link routes
 620   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 621   if (onelink_mine)
 622     xbt_dynar_merge(&ret,&onelink_mine);
 623
 624   //recursing
 625   char *key;
 626   xbt_dict_cursor_t cursor = NULL;
 627   AS_t rc_child;
 628   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 629     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 630     if (onelink_child)
 631       xbt_dynar_merge(&ret,&onelink_child);
 632   }
 633   return ret;
 634 }
 635
 636 static xbt_dynar_t get_onelink_routes(void)
 637 {
 638   return recursive_get_onelink_routes(routing_platf->root);
 639 }
 640
 641 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 642 {
 643   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 644   if (rc)
 645     return rc->rc_type;
 646
 647   return SURF_NETWORK_ELEMENT_NULL;
 648 }
 649
 650 /**
 651  * \brief Generic method: create the global routing schema
 652  *
 653  * Make a global routing structure and set all the parsing functions.
 654  */
 655 void routing_model_create( void *loopback)
 656 {
 657   /* config the uniq global routing */
 658   routing_platf = xbt_new0(s_routing_platf_t, 1);
 659   routing_platf->root = NULL;
 660   routing_platf->get_onelink_routes = get_onelink_routes;
 661   routing_platf->loopback = loopback;
 662   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 663   /* no current routing at moment */
 664   current_routing = NULL;
 665 }
 666
 667
 668 /* ************************************************** */
 669 /* ********** PATERN FOR NEW ROUTING **************** */
 670
 671 /* The minimal configuration of a new routing model need the next functions,
 672  * also you need to set at the start of the file, the new model in the model
 673  * list. Remember keep the null ending of the list.
 674  */
 675 /*** Routing model structure ***/
 676 // typedef struct {
 677 //   s_routing_component_t generic_routing;
 678 //   /* things that your routing model need */
 679 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 680
 681 /*** Parse routing model functions ***/
 682 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 683 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 684 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 685 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 686 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 687
 688 /*** Business methods ***/
 689 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 690 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 691 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 692
 693 /*** Creation routing model functions ***/
 694 // static void* model_NEW_create(void) {
 695 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 696 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 697 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 698 //   new_component->generic_routing.set_route = model_NEW_set_route;
 699 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 700 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 701 //   new_component->generic_routing.get_route = NEW_get_route;
 702 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 703 //   new_component->generic_routing.finalize = NEW_finalize;
 704 //   /* initialization of internal structures */
 705 //   return new_component;
 706 // } /* mandatory */
 707 // static void  model_NEW_load(void) {}   /* mandatory */
 708 // static void  model_NEW_unload(void) {} /* mandatory */
 709 // static void  model_NEW_end(void) {}    /* mandatory */
 710
 711 /* ************************************************************************** */
 712 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 713
 714 void routing_cluster_add_backbone(void* bb) {
 715   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 716         "You have to be in model Cluster to use tag backbone!");
 717   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 718   ((as_cluster_t)current_routing)->backbone = bb;
 719   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 720 }
 721
 722 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 723 {
 724   int start, end, i;
 725   char *groups , *host_id , *link_id = NULL;
 726   unsigned int iter;
 727   xbt_dynar_t radical_elements;
 728   xbt_dynar_t radical_ends;
 729
 730   //Make all hosts
 731   radical_elements = xbt_str_split(cabinet->radical, ",");
 732   xbt_dynar_foreach(radical_elements, iter, groups) {
 733
 734     radical_ends = xbt_str_split(groups, "-");
 735     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 736
 737     switch (xbt_dynar_length(radical_ends)) {
 738     case 1:
 739       end = start;
 740       break;
 741     case 2:
 742       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 743       break;
 744     default:
 745       surf_parse_error("Malformed radical");
 746       break;
 747     }
 748     s_sg_platf_host_cbarg_t host;
 749     memset(&host, 0, sizeof(host));
 750     host.initial_state = SURF_RESOURCE_ON;
 751     xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 752     xbt_dynar_push(power_state_list,&cabinet->power);
 753     host.power_peak = power_state_list;
 754     host.pstate = 0;
 755     host.power_scale = 1.0;
 756     host.core_amount = 1;
 757
 758     s_sg_platf_link_cbarg_t link;
 759     memset(&link, 0, sizeof(link));
 760     link.state = SURF_RESOURCE_ON;
 761     link.policy = SURF_LINK_FULLDUPLEX;
 762     link.latency = cabinet->lat;
 763     link.bandwidth = cabinet->bw;
 764
 765     s_sg_platf_host_link_cbarg_t host_link;
 766     memset(&host_link, 0, sizeof(host_link));
 767
 768     for (i = start; i <= end; i++) {
 769       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 770       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 771       host.id = host_id;
 772       link.id = link_id;
 773       sg_platf_new_host(&host);
 774       sg_platf_new_link(&link);
 775
 776       char* link_up = bprintf("%s_UP",link_id);
 777       char* link_down = bprintf("%s_DOWN",link_id);
 778       host_link.id = host_id;
 779       host_link.link_up = link_up;
 780       host_link.link_down= link_down;
 781       sg_platf_new_host_link(&host_link);
 782
 783       free(host_id);
 784       free(link_id);
 785       free(link_up);
 786       free(link_down);
 787     }
 788
 789     xbt_dynar_free(&radical_ends);
 790   }
 791   xbt_dynar_free(&radical_elements);
 792 }
 793
 794 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 795 {
 796   char *host_id, *groups, *link_id = NULL;
 797   xbt_dict_t patterns = NULL;
 798
 799   s_sg_platf_host_cbarg_t host;
 800   s_sg_platf_link_cbarg_t link;
 801
 802   unsigned int iter;
 803   int start, end, i;
 804   xbt_dynar_t radical_elements;
 805   xbt_dynar_t radical_ends;
 806
 807   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 808       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 809     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 810     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 811     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 812     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 813   }
 814
 815   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 816   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 817   AS.id = cluster->id;
 818   AS.routing = A_surfxml_AS_routing_Cluster;
 819   sg_platf_new_AS_begin(&AS);
 820
 821   current_routing->link_up_down_list
 822             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 823
 824   //Make all hosts
 825   radical_elements = xbt_str_split(cluster->radical, ",");
 826   xbt_dynar_foreach(radical_elements, iter, groups) {
 827
 828     radical_ends = xbt_str_split(groups, "-");
 829     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 830
 831     switch (xbt_dynar_length(radical_ends)) {
 832     case 1:
 833       end = start;
 834       break;
 835     case 2:
 836       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 837       break;
 838     default:
 839       surf_parse_error("Malformed radical");
 840       break;
 841     }
 842     for (i = start; i <= end; i++) {
 843       host_id =
 844           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 845       link_id = bprintf("%s_link_%d", cluster->id, i);
 846
 847       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 848
 849       memset(&host, 0, sizeof(host));
 850       host.id = host_id;
 851       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 852         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 853         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 854         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 855         host.power_trace = tmgr_trace_new_from_file(avail_file);
 856         xbt_free(avail_file);
 857       } else {
 858         XBT_DEBUG("\tavailability_file=\"\"");
 859       }
 860
 861       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 862         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 863         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 864         host.state_trace = tmgr_trace_new_from_file(avail_file);
 865         xbt_free(avail_file);
 866       } else {
 867         XBT_DEBUG("\tstate_file=\"\"");
 868       }
 869
 870       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 871       xbt_dynar_push(power_state_list,&cluster->power);
 872       host.power_peak = power_state_list;
 873       host.pstate = 0;
 874
 875       //host.power_peak = cluster->power;
 876       host.power_scale = 1.0;
 877       host.core_amount = cluster->core_amount;
 878       host.initial_state = SURF_RESOURCE_ON;
 879       host.coord = "";
 880       sg_platf_new_host(&host);
 881       XBT_DEBUG("</host>");
 882
 883       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 884                 cluster->bw, cluster->lat);
 885
 886       memset(&link, 0, sizeof(link));
 887       link.id = link_id;
 888       link.bandwidth = cluster->bw;
 889       link.latency = cluster->lat;
 890       link.state = SURF_RESOURCE_ON;
 891       link.policy = cluster->sharing_policy;
 892       sg_platf_new_link(&link);
 893
 894       s_surf_parsing_link_up_down_t info;
 895
 896       if (link.policy == SURF_LINK_FULLDUPLEX) {
 897         char *tmp_link = bprintf("%s_UP", link_id);
 898         info.link_up =
 899             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 900         free(tmp_link);
 901         tmp_link = bprintf("%s_DOWN", link_id);
 902         info.link_down =
 903             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 904         free(tmp_link);
 905       } else {
 906         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 907         info.link_down = info.link_up;
 908       }
 909
 910       if(cluster->limiter_link!=0){
 911         char *tmp_link = bprintf("%s_limiter", link_id);
 912         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 913                 cluster->limiter_link);
 914
 915
 916         memset(&link, 0, sizeof(link));
 917         link.id = tmp_link;
 918         link.bandwidth = cluster->limiter_link;
 919         link.latency = 0;
 920         link.state = SURF_RESOURCE_ON;
 921         link.policy = SURF_LINK_SHARED;
 922         sg_platf_new_link(&link);
 923          info.limiter_link =
 924             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 925         free(tmp_link);
 926       }else{
 927         info.limiter_link =NULL;
 928       }
 929
 930       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 931         char *tmp_link = bprintf("%s_loopback", link_id);
 932         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 933                 cluster->limiter_link);
 934
 935
 936         memset(&link, 0, sizeof(link));
 937         link.id = tmp_link;
 938         link.bandwidth = cluster->loopback_bw;
 939         link.latency = cluster->loopback_lat;
 940         link.state = SURF_RESOURCE_ON;
 941         link.policy = SURF_LINK_FATPIPE;
 942         sg_platf_new_link(&link);
 943          info.loopback_link =
 944             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 945         free(tmp_link);
 946       }else{
 947         info.loopback_link =NULL;
 948       }
 949
 950       xbt_dynar_push(current_routing->link_up_down_list,&info);
 951       xbt_free(link_id);
 952       xbt_free(host_id);
 953     }
 954
 955     xbt_dynar_free(&radical_ends);
 956   }
 957   xbt_dynar_free(&radical_elements);
 958
 959   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 960   // and it's very useful to connect clusters together
 961   XBT_DEBUG(" ");
 962   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 963   char *newid = NULL;
 964   s_sg_platf_router_cbarg_t router;
 965   memset(&router, 0, sizeof(router));
 966   router.id = cluster->router_id;
 967   router.coord = "";
 968   if (!router.id || !strcmp(router.id, ""))
 969     router.id = newid =
 970         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 971                 cluster->suffix);
 972   sg_platf_new_router(&router);
 973   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 974   free(newid);
 975
 976   //Make the backbone
 977   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 978     char *link_backbone = bprintf("%s_backbone", cluster->id);
 979     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 980               cluster->bb_bw, cluster->bb_lat);
 981
 982     memset(&link, 0, sizeof(link));
 983     link.id = link_backbone;
 984     link.bandwidth = cluster->bb_bw;
 985     link.latency = cluster->bb_lat;
 986     link.state = SURF_RESOURCE_ON;
 987     link.policy = cluster->bb_sharing_policy;
 988
 989     sg_platf_new_link(&link);
 990
 991     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 992
 993     free(link_backbone);
 994   }
 995
 996   XBT_DEBUG("</AS>");
 997   sg_platf_new_AS_end();
 998   XBT_DEBUG(" ");
 999   xbt_dict_free(&patterns); // no op if it were never set
1000 }
1001
1002 static void routing_parse_postparse(void) {
1003   xbt_dict_free(&random_value);
1004 }
1005
1006 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1007 {
1008   char *host_id = NULL;
1009   char *link_id;
1010
1011   XBT_DEBUG(" ");
1012   host_id = HOST_PEER(peer->id);
1013   link_id = LINK_PEER(peer->id);
1014
1015   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1016   s_sg_platf_host_cbarg_t host;
1017   memset(&host, 0, sizeof(host));
1018   host.initial_state = SURF_RESOURCE_ON;
1019   host.id = host_id;
1020
1021   xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
1022   xbt_dynar_push(power_state_list,&peer->power);
1023   host.power_peak = power_state_list;
1024   host.pstate = 0;
1025   //host.power_peak = peer->power;
1026   host.power_scale = 1.0;
1027   host.power_trace = peer->availability_trace;
1028   host.state_trace = peer->state_trace;
1029   host.core_amount = 1;
1030   host.coord = peer->coord;
1031   sg_platf_new_host(&host);
1032
1033   s_sg_platf_link_cbarg_t link;
1034   memset(&link, 0, sizeof(link));
1035   link.state = SURF_RESOURCE_ON;
1036   link.policy = SURF_LINK_SHARED;
1037   link.latency = peer->lat;
1038
1039   char* link_up = bprintf("%s_UP",link_id);
1040   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1041             peer->bw_out, peer->lat);
1042   link.id = link_up;
1043   link.bandwidth = peer->bw_out;
1044   sg_platf_new_link(&link);
1045
1046   char* link_down = bprintf("%s_DOWN",link_id);
1047   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1048             peer->bw_in, peer->lat);
1049   link.id = link_down;
1050   link.bandwidth = peer->bw_in;
1051   sg_platf_new_link(&link);
1052
1053   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1054   s_sg_platf_host_link_cbarg_t host_link;
1055   memset(&host_link, 0, sizeof(host_link));
1056   host_link.id = host_id;
1057   host_link.link_up = link_up;
1058   host_link.link_down= link_down;
1059   sg_platf_new_host_link(&host_link);
1060
1061   XBT_DEBUG(" ");
1062
1063   //xbt_dynar_free(&tab_elements_num);
1064   free(host_id);
1065   free(link_id);
1066   free(link_up);
1067   free(link_down);
1068 }
1069
1070 static void routing_parse_Srandom(void)
1071 {
1072   double mean, std, min, max, seed;
1073   char *random_id = A_surfxml_random_id;
1074   char *random_radical = A_surfxml_random_radical;
1075   char *rd_name = NULL;
1076   char *rd_value;
1077   mean = surf_parse_get_double(A_surfxml_random_mean);
1078   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1079   min = surf_parse_get_double(A_surfxml_random_min);
1080   max = surf_parse_get_double(A_surfxml_random_max);
1081   seed = surf_parse_get_double(A_surfxml_random_seed);
1082
1083   double res = 0;
1084   int i = 0;
1085   random_data_t random = xbt_new0(s_random_data_t, 1);
1086   char *tmpbuf;
1087
1088   xbt_dynar_t radical_elements;
1089   unsigned int iter;
1090   char *groups;
1091   int start, end;
1092   xbt_dynar_t radical_ends;
1093
1094   switch (A_surfxml_random_generator) {
1095   case AU_surfxml_random_generator:
1096   case A_surfxml_random_generator_NONE:
1097     random->generator = NONE;
1098     break;
1099   case A_surfxml_random_generator_DRAND48:
1100     random->generator = DRAND48;
1101     break;
1102   case A_surfxml_random_generator_RAND:
1103     random->generator = RAND;
1104     break;
1105   case A_surfxml_random_generator_RNGSTREAM:
1106     random->generator = RNGSTREAM;
1107     break;
1108   default:
1109     surf_parse_error("Invalid random generator");
1110     break;
1111   }
1112   random->seed = seed;
1113   random->min = min;
1114   random->max = max;
1115
1116   /* Check user stupidities */
1117   if (max < min)
1118     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1119   if (mean < min)
1120     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1121   if (mean > max)
1122     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1123
1124   /* normalize the mean and standard deviation before storing */
1125   random->mean = (mean - min) / (max - min);
1126   random->std = std / (max - min);
1127
1128   if (random->mean * (1 - random->mean) < random->std * random->std)
1129     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1130            random->mean, random->std);
1131
1132   XBT_DEBUG
1133       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1134        random_id, random->min, random->max, random->mean, random->std,
1135        (int)random->generator, random->seed, random_radical);
1136
1137   if (!random_value)
1138     random_value = xbt_dict_new_homogeneous(free);
1139
1140   if (!strcmp(random_radical, "")) {
1141     res = random_generate(random);
1142     rd_value = bprintf("%f", res);
1143     xbt_dict_set(random_value, random_id, rd_value, NULL);
1144   } else {
1145     radical_elements = xbt_str_split(random_radical, ",");
1146     xbt_dynar_foreach(radical_elements, iter, groups) {
1147       radical_ends = xbt_str_split(groups, "-");
1148       switch (xbt_dynar_length(radical_ends)) {
1149       case 1:
1150         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1151                    "Custom Random '%s' already exists !", random_id);
1152         res = random_generate(random);
1153         tmpbuf =
1154             bprintf("%s%d", random_id,
1155                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1156         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1157         xbt_free(tmpbuf);
1158         break;
1159
1160       case 2:
1161         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1162         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1163         for (i = start; i <= end; i++) {
1164           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1165                      "Custom Random '%s' already exists !", bprintf("%s%d",
1166                                                                     random_id,
1167                                                                     i));
1168           res = random_generate(random);
1169           tmpbuf = bprintf("%s%d", random_id, i);
1170           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1171           xbt_free(tmpbuf);
1172         }
1173         break;
1174       default:
1175         XBT_CRITICAL("Malformed radical");
1176         break;
1177       }
1178       res = random_generate(random);
1179       rd_name = bprintf("%s_router", random_id);
1180       rd_value = bprintf("%f", res);
1181       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1182
1183       xbt_dynar_free(&radical_ends);
1184     }
1185     free(rd_name);
1186     xbt_dynar_free(&radical_elements);
1187   }
1188 }
1189
1190 void routing_register_callbacks()
1191 {
1192   sg_platf_host_add_cb(parse_S_host);
1193   sg_platf_router_add_cb(parse_S_router);
1194   sg_platf_host_link_add_cb(parse_S_host_link);
1195   sg_platf_route_add_cb(parse_E_route);
1196   sg_platf_ASroute_add_cb(parse_E_ASroute);
1197   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1198   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1199
1200   sg_platf_cluster_add_cb(routing_parse_cluster);
1201   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1202
1203   sg_platf_peer_add_cb(routing_parse_peer);
1204   sg_platf_postparse_add_cb(routing_parse_postparse);
1205
1206   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1207   sg_platf_AS_end_add_cb(routing_AS_end);
1208   sg_platf_AS_begin_add_cb(routing_AS_begin);
1209
1210   sg_platf_trace_add_cb(routing_parse_trace);
1211   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1212
1213 #ifdef HAVE_TRACING
1214   instr_routing_define_callbacks();
1215 #endif
1216 }
1217
1218 /**
1219  * \brief Recursive function for finalize
1220  *
1221  * \param rc the source host name
1222  *
1223  * This fuction is call by "finalize". It allow to finalize the
1224  * AS or routing components. It delete all the structures.
1225  */
1226 static void finalize_rec(AS_t as) {
1227   xbt_dict_cursor_t cursor = NULL;
1228   char *key;
1229   AS_t elem;
1230
1231   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1232     finalize_rec(elem);
1233   }
1234
1235   as->finalize(as);
1236 }
1237
1238 /** \brief Frees all memory allocated by the routing module */
1239 void routing_exit(void) {
1240   if (!routing_platf)
1241     return;
1242   xbt_dynar_free(&routing_platf->last_route);
1243   finalize_rec(routing_platf->root);
1244   xbt_free(routing_platf);
1245 }
1246
1247 AS_t surf_AS_get_routing_root() {
1248   return routing_platf->root;
1249 }
1250
1251 const char *surf_AS_get_name(AS_t as) {
1252   return as->name;
1253 }
1254
1255 xbt_dict_t surf_AS_get_routing_sons(AS_t as) {
1256   return as->routing_sons;
1257 }
1258
1259 const char *surf_AS_get_model(AS_t as) {
1260   return as->model_desc->name;
1261 }
1262
1263 xbt_dynar_t surf_AS_get_hosts(AS_t as) {
1264   xbt_dynar_t elms = as->index_network_elm;
1265   sg_routing_edge_t relm;
1266   xbt_dictelm_t delm;
1267   int index;
1268   int count = xbt_dynar_length(elms);
1269   xbt_dynar_t res =  xbt_dynar_new(sizeof(xbt_dictelm_t), NULL);
1270   for (index = 0; index < count; index++) {
1271      relm = xbt_dynar_get_as(elms, index, sg_routing_edge_t);
1272      delm = xbt_lib_get_elm_or_null(host_lib, relm->name);
1273      if (delm!=NULL) {
1274        xbt_dynar_push(res, &delm);
1275      }
1276   }
1277   return res;
1278 }