src/surf/surf_routing.c

   1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "simgrid/platf_interface.h"    // platform creation API internal interface
   8
   9 #include "surf_routing_private.h"
  10 #include "surf/surf_routing.h"
  11 #include "surf/surfxml_parse_values.h"
  12
  13 /**
  14  * @ingroup SURF_build_api
  15  * @brief A library containing all known workstations
  16  */
  17 xbt_lib_t host_lib;
  18
  19 int ROUTING_HOST_LEVEL;         //Routing level
  20 int SURF_CPU_LEVEL;             //Surf cpu level
  21 int SURF_WKS_LEVEL;             //Surf workstation level
  22 int SIMIX_HOST_LEVEL;           //Simix level
  23 int MSG_HOST_LEVEL;             //Msg level
  24 int SD_HOST_LEVEL;              //Simdag level
  25 int COORD_HOST_LEVEL=0;         //Coordinates level
  26 int NS3_HOST_LEVEL;             //host node for ns3
  27
  28 xbt_dict_t watched_hosts_lib;
  29
  30 /**
  31  * @ingroup SURF_build_api
  32  * @brief A library containing all known links
  33  */
  34 xbt_lib_t link_lib;
  35 int SD_LINK_LEVEL;              //Simdag level
  36 int SURF_LINK_LEVEL;            //Surf level
  37 int NS3_LINK_LEVEL;             //link for ns3
  38
  39 xbt_lib_t as_router_lib;
  40 int ROUTING_ASR_LEVEL;          //Routing level
  41 int COORD_ASR_LEVEL;            //Coordinates level
  42 int NS3_ASR_LEVEL;              //host node for ns3
  43 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  44
  45 static xbt_dict_t random_value = NULL;
  46
  47 /** @brief Retrieve a routing edge from its name
  48  *
  49  * Routing edges are either CPU/workstation and routers, whatever
  50  */
  51 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  52     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  53     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  54   return net_elm;
  55 }
  56
  57 /* Global vars */
  58 routing_platf_t routing_platf = NULL;
  59 AS_t current_routing = NULL;
  60
  61 /* global parse functions */
  62 extern xbt_dynar_t mount_list;
  63
  64 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  65
  66 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  67 static void routing_parse_Srandom(void);        /* random bypass */
  68
  69 static void routing_parse_postparse(void);
  70
  71 /* this lines are only for replace use like index in the model table */
  72 typedef enum {
  73   SURF_MODEL_FULL = 0,
  74   SURF_MODEL_FLOYD,
  75   SURF_MODEL_DIJKSTRA,
  76   SURF_MODEL_DIJKSTRACACHE,
  77   SURF_MODEL_NONE,
  78   SURF_MODEL_VIVALDI,
  79   SURF_MODEL_CLUSTER
  80 } e_routing_types;
  81
  82 struct s_model_type routing_models[] = {
  83   {"Full",
  84    "Full routing data (fast, large memory requirements, fully expressive)",
  85    model_full_create, model_full_end},
  86   {"Floyd",
  87    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  88    model_floyd_create, model_floyd_end},
  89   {"Dijkstra",
  90    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  91    model_dijkstra_create, model_dijkstra_both_end},
  92   {"DijkstraCache",
  93    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  94    model_dijkstracache_create, model_dijkstra_both_end},
  95   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  96    model_none_create,  NULL},
  97   {"Vivaldi", "Vivaldi routing",
  98    model_vivaldi_create, NULL},
  99   {"Cluster", "Cluster routing",
 100    model_cluster_create, NULL},
 101   {NULL, NULL, NULL, NULL}
 102 };
 103
 104 /**
 105  * \brief Add a "host_link" to the network element list
 106  */
 107 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 108 {
 109   sg_routing_edge_t info = NULL;
 110   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 111   xbt_assert(info, "Host '%s' not found!",host->id);
 112   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 113       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 114       "You have to be in model Cluster to use tag host_link!");
 115
 116   s_surf_parsing_link_up_down_t link_up_down;
 117   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 118   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 119   link_up_down.limiter_link = NULL;
 120   link_up_down.loopback_link = NULL;
 121
 122   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 123   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 124
 125   if(!current_routing->link_up_down_list)
 126     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 127
 128   // If dynar is is greater than edge id and if the host_link is already defined
 129   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 130       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 131     xbt_die("Host_link for '%s' is already defined!",host->id);
 132
 133   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 134   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 135 }
 136
 137 /**
 138  * \brief Add a "host" to the network element list
 139  */
 140 static void parse_S_host(sg_platf_host_cbarg_t host)
 141 {
 142   sg_routing_edge_t info = NULL;
 143   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 144     current_routing->hierarchy = SURF_ROUTING_BASE;
 145   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 146              "Reading a host, processing unit \"%s\" already exists", host->id);
 147
 148   info = xbt_new0(s_routing_edge_t, 1);
 149   info->rc_component = current_routing;
 150   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 151   info->name = xbt_strdup(host->id);
 152   info->id = current_routing->parse_PU(current_routing, (void *) info);
 153   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 154   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 155
 156   if(mount_list){
 157     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 158     mount_list = NULL;
 159   }
 160
 161   if (host->coord && strcmp(host->coord, "")) {
 162     unsigned int cursor;
 163     char*str;
 164
 165     if (!COORD_HOST_LEVEL)
 166       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 167     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 168     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 169     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 170     xbt_dynar_foreach(ctn_str,cursor, str) {
 171       double val = atof(str);
 172       xbt_dynar_push(ctn,&val);
 173     }
 174     xbt_dynar_shrink(ctn, 0);
 175     xbt_dynar_free(&ctn_str);
 176     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 177     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 178   }
 179 }
 180
 181 /**
 182  * \brief Add a "router" to the network element list
 183  */
 184 static void parse_S_router(sg_platf_router_cbarg_t router)
 185 {
 186   sg_routing_edge_t info = NULL;
 187   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 188     current_routing->hierarchy = SURF_ROUTING_BASE;
 189   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 190              "Reading a router, processing unit \"%s\" already exists",
 191              router->id);
 192
 193   info = xbt_new0(s_routing_edge_t, 1);
 194   info->rc_component = current_routing;
 195   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 196   info->name = xbt_strdup(router->id);
 197   info->id = current_routing->parse_PU(current_routing, (void *) info);
 198   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 199   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 200
 201   if (router->coord && strcmp(router->coord, "")) {
 202     unsigned int cursor;
 203     char*str;
 204
 205     if (!COORD_ASR_LEVEL)
 206       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 207     /* Pre-parse the host coordinates */
 208     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 209     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 210     xbt_dynar_foreach(ctn_str,cursor, str) {
 211       double val = atof(str);
 212       xbt_dynar_push(ctn,&val);
 213     }
 214     xbt_dynar_shrink(ctn, 0);
 215     xbt_dynar_free(&ctn_str);
 216     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 217     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 218   }
 219 }
 220
 221 /**
 222  * \brief Store the route by calling the set_route function of the current routing component
 223  */
 224 static void parse_E_route(sg_platf_route_cbarg_t route)
 225 {
 226   xbt_assert(current_routing->parse_route,
 227              "no defined method \"set_route\" in \"%s\"",
 228              current_routing->name);
 229
 230   current_routing->parse_route(current_routing, route);
 231 }
 232
 233 /**
 234  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 235  */
 236 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 237 {
 238   xbt_assert(current_routing->parse_ASroute,
 239              "no defined method \"set_ASroute\" in \"%s\"",
 240              current_routing->name);
 241   current_routing->parse_ASroute(current_routing, ASroute);
 242 }
 243
 244 /**
 245  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 246  */
 247 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 248 {
 249   xbt_assert(current_routing->parse_bypassroute,
 250              "Bypassing mechanism not implemented by routing '%s'",
 251              current_routing->name);
 252
 253   current_routing->parse_bypassroute(current_routing, route);
 254 }
 255
 256 /**
 257  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 258  */
 259 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 260 {
 261   xbt_assert(current_routing->parse_bypassroute,
 262              "Bypassing mechanism not implemented by routing '%s'",
 263              current_routing->name);
 264   current_routing->parse_bypassroute(current_routing, ASroute);
 265 }
 266
 267 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 268 {
 269   tmgr_trace_t tmgr_trace;
 270   if (!trace->file || strcmp(trace->file, "") != 0) {
 271     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 272   } else if (strcmp(trace->pc_data, "") == 0) {
 273     tmgr_trace = NULL;
 274   } else {
 275     tmgr_trace =
 276           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 277                                      trace->periodicity);
 278   }
 279   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 280 }
 281
 282 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 283 {
 284   xbt_assert(xbt_dict_get_or_null
 285               (traces_set_list, trace_connect->trace),
 286               "Cannot connect trace %s to %s: trace unknown",
 287               trace_connect->trace,
 288               trace_connect->element);
 289
 290   switch (trace_connect->kind) {
 291   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 292     xbt_dict_set(trace_connect_list_host_avail,
 293         trace_connect->trace,
 294         xbt_strdup(trace_connect->element), NULL);
 295     break;
 296   case SURF_TRACE_CONNECT_KIND_POWER:
 297     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 298         xbt_strdup(trace_connect->element), NULL);
 299     break;
 300   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 301     xbt_dict_set(trace_connect_list_link_avail,
 302         trace_connect->trace,
 303         xbt_strdup(trace_connect->element), NULL);
 304     break;
 305   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 306     xbt_dict_set(trace_connect_list_bandwidth,
 307         trace_connect->trace,
 308         xbt_strdup(trace_connect->element), NULL);
 309     break;
 310   case SURF_TRACE_CONNECT_KIND_LATENCY:
 311     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 312         xbt_strdup(trace_connect->element), NULL);
 313     break;
 314   default:
 315     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 316         trace_connect->trace, trace_connect->element);
 317     break;
 318   }
 319 }
 320
 321 extern int _sg_init_status; /* yay, this is an horrible hack */
 322
 323 /**
 324  * \brief Make a new routing component to the platform
 325  *
 326  * Add a new autonomous system to the platform. Any elements (such as host,
 327  * router or sub-AS) added after this call and before the corresponding call
 328  * to sg_platf_new_AS_close() will be added to this AS.
 329  *
 330  * Once this function was called, the configuration concerning the used
 331  * models cannot be changed anymore.
 332  *
 333  * @param AS_id name of this autonomous system. Must be unique in the platform
 334  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 335  */
 336 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 337 {
 338   XBT_DEBUG("routing_AS_begin");
 339   AS_t new_as;
 340   routing_model_description_t model = NULL;
 341
 342   xbt_assert(!xbt_lib_get_or_null
 343              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 344              "The AS \"%s\" already exists", AS->id);
 345
 346   _sg_init_status = 2; /* horrible hack: direct access to the global controlling the level of configuration to prevent any further config */
 347
 348   /* search the routing model */
 349   switch(AS->routing){
 350     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 351     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 352     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 353     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 354     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 355     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 356     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 357     default: xbt_die("Not a valid model!!!");
 358     break;
 359   }
 360
 361   /* make a new routing component */
 362   new_as = (AS_t) model->create();
 363   new_as->model_desc = model;
 364   new_as->hierarchy = SURF_ROUTING_NULL;
 365   new_as->name = xbt_strdup(AS->id);
 366
 367   sg_routing_edge_t info = NULL;
 368   info = xbt_new0(s_routing_edge_t, 1);
 369
 370   if (current_routing == NULL && routing_platf->root == NULL) {
 371
 372     /* it is the first one */
 373     new_as->routing_father = NULL;
 374     routing_platf->root = new_as;
 375     info->id = -1;
 376   } else if (current_routing != NULL && routing_platf->root != NULL) {
 377
 378     xbt_assert(!xbt_dict_get_or_null
 379                (current_routing->routing_sons, AS->id),
 380                "The AS \"%s\" already exists", AS->id);
 381     /* it is a part of the tree */
 382     new_as->routing_father = current_routing;
 383     /* set the father behavior */
 384     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 385       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 386     /* add to the sons dictionary */
 387     xbt_dict_set(current_routing->routing_sons, AS->id,
 388                  (void *) new_as, NULL);
 389     /* add to the father element list */
 390     info->id = current_routing->parse_AS(current_routing, (void *) info);
 391   } else {
 392     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 393   }
 394
 395   info->rc_component = new_as->routing_father;
 396   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 397   info->name = new_as->name;
 398
 399   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 400               (void *) info);
 401   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 402
 403   /* set the new current component of the tree */
 404   current_routing = new_as;
 405   current_routing->net_elem = info;
 406
 407 }
 408
 409 /**
 410  * \brief Specify that the current description of AS is finished
 411  *
 412  * Once you've declared all the content of your AS, you have to close
 413  * it with this call. Your AS is not usable until you call this function.
 414  *
 415  * @fixme: this call is not as robust as wanted: bad things WILL happen
 416  * if you call it twice for the same AS, or if you forget calling it, or
 417  * even if you add stuff to a closed AS
 418  *
 419  */
 420 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 421 {
 422
 423   if (current_routing == NULL) {
 424     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 425   } else {
 426     if (current_routing->model_desc->end)
 427       current_routing->model_desc->end(current_routing);
 428     current_routing = current_routing->routing_father;
 429   }
 430 }
 431
 432 /* Aux Business methods */
 433
 434 /**
 435  * \brief Get the AS father and the first elements of the chain
 436  *
 437  * \param src the source host name
 438  * \param dst the destination host name
 439  *
 440  * Get the common father of the to processing units, and the first different
 441  * father in the chain
 442  */
 443 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 444                             AS_t * res_father,
 445                             AS_t * res_src,
 446                             AS_t * res_dst)
 447 {
 448   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 449 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 450   AS_t src_as, dst_as;
 451   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 452   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 453   int index_src = 0;
 454   int index_dst = 0;
 455   AS_t current;
 456   AS_t current_src;
 457   AS_t current_dst;
 458   AS_t father;
 459
 460   /* (1) find the as where the src and dst are located */
 461   sg_routing_edge_t src_data = src;
 462   sg_routing_edge_t dst_data = dst;
 463   src_as = src_data->rc_component;
 464   dst_as = dst_data->rc_component;
 465 #ifndef NDEBUG
 466   char* src_name = src_data->name;
 467   char* dst_name = dst_data->name;
 468 #endif
 469
 470   xbt_assert(src_as && dst_as,
 471              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 472
 473   /* (2) find the path to the root routing component */
 474   for (current = src_as; current != NULL; current = current->routing_father) {
 475     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 476       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 477     path_src[index_src++] = current;
 478   }
 479   for (current = dst_as; current != NULL; current = current->routing_father) {
 480     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 481       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 482     path_dst[index_dst++] = current;
 483   }
 484
 485   /* (3) find the common father */
 486   do {
 487     current_src = path_src[--index_src];
 488     current_dst = path_dst[--index_dst];
 489   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 490
 491   /* (4) they are not in the same routing component, make the path */
 492   if (current_src == current_dst)
 493     father = current_src;
 494   else
 495     father = path_src[index_src + 1];
 496
 497   /* (5) result generation */
 498   *res_father = father;         /* first the common father of src and dst */
 499   *res_src = current_src;       /* second the first different father of src */
 500   *res_dst = current_dst;       /* three  the first different father of dst */
 501
 502 #undef ELEMENTS_FATHER_MAXDEPTH
 503 }
 504
 505 /* Global Business methods */
 506
 507 /**
 508  * \brief Recursive function for get_route_latency
 509  *
 510  * \param src the source host name
 511  * \param dst the destination host name
 512  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 513  * \param *latency the latency, if needed
 514  *
 515  * This function is called by "get_route" and "get_latency". It allows to walk
 516  * recursively through the ASes tree.
 517  */
 518 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 519                                    xbt_dynar_t * links, double *latency)
 520 {
 521   s_sg_platf_route_cbarg_t route;
 522   memset(&route,0,sizeof(route));
 523
 524   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 525   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 526
 527   /* Find how src and dst are interconnected */
 528   AS_t common_father, src_father, dst_father;
 529   elements_father(src, dst, &common_father, &src_father, &dst_father);
 530   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 531       common_father->name,src_father->name,dst_father->name);
 532
 533   /* Check whether a direct bypass is defined */
 534   sg_platf_route_cbarg_t e_route_bypass = NULL;
 535   if (common_father->get_bypass_route)
 536     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 537
 538   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 539   if (e_route_bypass) {
 540     xbt_dynar_merge(links, &e_route_bypass->link_list);
 541     generic_free_route(e_route_bypass);
 542     return;
 543   }
 544
 545   /* If src and dst are in the same AS, life is good */
 546   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 547     route.link_list = *links;
 548     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 549     // if vivaldi latency+=vivaldi(src,dst)
 550     return;
 551   }
 552
 553   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 554
 555   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 556   // Find the net_card corresponding to father
 557   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 558   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 559
 560   common_father->get_route_and_latency(common_father,
 561                                        src_father_net_elm, dst_father_net_elm,
 562                                        &route, latency);
 563
 564   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 565       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 566
 567   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 568   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 569
 570   /* If source gateway is not our source, we have to recursively find our way up to this point */
 571   if (src != src_gateway_net_elm)
 572     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 573   xbt_dynar_merge(links, &route.link_list);
 574
 575   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 576   if (dst_gateway_net_elm != dst)
 577     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 578
 579   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 580 }
 581
 582 /**
 583  * \brief Find a route between hosts
 584  *
 585  * \param src the network_element_t for src host
 586  * \param dst the network_element_t for dst host
 587  * \param route where to store the list of links.
 588  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 589  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 590  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 591  * \pre route!=NULL
 592  *
 593  * walk through the routing components tree and find a route between hosts
 594  * by calling the differents "get_route" functions in each routing component.
 595  */
 596 void routing_get_route_and_latency(sg_routing_edge_t src,
 597                                    sg_routing_edge_t dst,
 598                                    xbt_dynar_t * route, double *latency)
 599 {
 600   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 601   if (!*route) {
 602     xbt_dynar_reset(routing_platf->last_route);
 603     *route = routing_platf->last_route;
 604   }
 605
 606   _get_route_and_latency(src, dst, route, latency);
 607
 608   xbt_assert(!latency || *latency >= 0.0,
 609              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 610 }
 611
 612 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 613 {
 614   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 615
 616   //adding my one link routes
 617   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 618   if (onelink_mine)
 619     xbt_dynar_merge(&ret,&onelink_mine);
 620
 621   //recursing
 622   char *key;
 623   xbt_dict_cursor_t cursor = NULL;
 624   AS_t rc_child;
 625   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 626     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 627     if (onelink_child)
 628       xbt_dynar_merge(&ret,&onelink_child);
 629   }
 630   return ret;
 631 }
 632
 633 static xbt_dynar_t get_onelink_routes(void)
 634 {
 635   return recursive_get_onelink_routes(routing_platf->root);
 636 }
 637
 638 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 639 {
 640   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 641   if (rc)
 642     return rc->rc_type;
 643
 644   return SURF_NETWORK_ELEMENT_NULL;
 645 }
 646
 647 /**
 648  * \brief Generic method: create the global routing schema
 649  *
 650  * Make a global routing structure and set all the parsing functions.
 651  */
 652 void routing_model_create( void *loopback)
 653 {
 654   /* config the uniq global routing */
 655   routing_platf = xbt_new0(s_routing_platf_t, 1);
 656   routing_platf->root = NULL;
 657   routing_platf->get_onelink_routes = get_onelink_routes;
 658   routing_platf->loopback = loopback;
 659   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 660   /* no current routing at moment */
 661   current_routing = NULL;
 662 }
 663
 664
 665 /* ************************************************** */
 666 /* ********** PATERN FOR NEW ROUTING **************** */
 667
 668 /* The minimal configuration of a new routing model need the next functions,
 669  * also you need to set at the start of the file, the new model in the model
 670  * list. Remember keep the null ending of the list.
 671  */
 672 /*** Routing model structure ***/
 673 // typedef struct {
 674 //   s_routing_component_t generic_routing;
 675 //   /* things that your routing model need */
 676 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 677
 678 /*** Parse routing model functions ***/
 679 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 680 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 681 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 682 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 683 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 684
 685 /*** Business methods ***/
 686 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 687 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 688 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 689
 690 /*** Creation routing model functions ***/
 691 // static void* model_NEW_create(void) {
 692 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 693 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 694 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 695 //   new_component->generic_routing.set_route = model_NEW_set_route;
 696 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 697 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 698 //   new_component->generic_routing.get_route = NEW_get_route;
 699 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 700 //   new_component->generic_routing.finalize = NEW_finalize;
 701 //   /* initialization of internal structures */
 702 //   return new_component;
 703 // } /* mandatory */
 704 // static void  model_NEW_load(void) {}   /* mandatory */
 705 // static void  model_NEW_unload(void) {} /* mandatory */
 706 // static void  model_NEW_end(void) {}    /* mandatory */
 707
 708 /* ************************************************************************** */
 709 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 710
 711 void routing_cluster_add_backbone(void* bb) {
 712   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 713         "You have to be in model Cluster to use tag backbone!");
 714   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 715   ((as_cluster_t)current_routing)->backbone = bb;
 716   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 717 }
 718
 719 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 720 {
 721   int start, end, i;
 722   char *groups , *host_id , *link_id = NULL;
 723   unsigned int iter;
 724   xbt_dynar_t radical_elements;
 725   xbt_dynar_t radical_ends;
 726
 727   //Make all hosts
 728   radical_elements = xbt_str_split(cabinet->radical, ",");
 729   xbt_dynar_foreach(radical_elements, iter, groups) {
 730
 731     radical_ends = xbt_str_split(groups, "-");
 732     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 733
 734     switch (xbt_dynar_length(radical_ends)) {
 735     case 1:
 736       end = start;
 737       break;
 738     case 2:
 739       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 740       break;
 741     default:
 742       surf_parse_error("Malformed radical");
 743       break;
 744     }
 745     s_sg_platf_host_cbarg_t host;
 746     memset(&host, 0, sizeof(host));
 747     host.initial_state = SURF_RESOURCE_ON;
 748     xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 749     xbt_dynar_push(power_state_list,&cabinet->power);
 750     host.power_peak = power_state_list;
 751     host.pstate = 0;
 752     host.power_scale = 1.0;
 753     host.core_amount = 1;
 754
 755     s_sg_platf_link_cbarg_t link;
 756     memset(&link, 0, sizeof(link));
 757     link.state = SURF_RESOURCE_ON;
 758     link.policy = SURF_LINK_FULLDUPLEX;
 759     link.latency = cabinet->lat;
 760     link.bandwidth = cabinet->bw;
 761
 762     s_sg_platf_host_link_cbarg_t host_link;
 763     memset(&host_link, 0, sizeof(host_link));
 764
 765     for (i = start; i <= end; i++) {
 766       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 767       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 768       host.id = host_id;
 769       link.id = link_id;
 770       sg_platf_new_host(&host);
 771       sg_platf_new_link(&link);
 772
 773       char* link_up = bprintf("%s_UP",link_id);
 774       char* link_down = bprintf("%s_DOWN",link_id);
 775       host_link.id = host_id;
 776       host_link.link_up = link_up;
 777       host_link.link_down= link_down;
 778       sg_platf_new_host_link(&host_link);
 779
 780       free(host_id);
 781       free(link_id);
 782       free(link_up);
 783       free(link_down);
 784     }
 785
 786     xbt_dynar_free(&radical_ends);
 787   }
 788   xbt_dynar_free(&radical_elements);
 789 }
 790
 791 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 792 {
 793   char *host_id, *groups, *link_id = NULL;
 794   xbt_dict_t patterns = NULL;
 795
 796   s_sg_platf_host_cbarg_t host;
 797   s_sg_platf_link_cbarg_t link;
 798
 799   unsigned int iter;
 800   int start, end, i;
 801   xbt_dynar_t radical_elements;
 802   xbt_dynar_t radical_ends;
 803
 804   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 805       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 806     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 807     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 808     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 809     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 810   }
 811
 812   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 813   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 814   AS.id = cluster->id;
 815   AS.routing = A_surfxml_AS_routing_Cluster;
 816   sg_platf_new_AS_begin(&AS);
 817
 818   current_routing->link_up_down_list
 819             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 820
 821   //Make all hosts
 822   radical_elements = xbt_str_split(cluster->radical, ",");
 823   xbt_dynar_foreach(radical_elements, iter, groups) {
 824
 825     radical_ends = xbt_str_split(groups, "-");
 826     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 827
 828     switch (xbt_dynar_length(radical_ends)) {
 829     case 1:
 830       end = start;
 831       break;
 832     case 2:
 833       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 834       break;
 835     default:
 836       surf_parse_error("Malformed radical");
 837       break;
 838     }
 839     for (i = start; i <= end; i++) {
 840       host_id =
 841           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 842       link_id = bprintf("%s_link_%d", cluster->id, i);
 843
 844       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 845
 846       memset(&host, 0, sizeof(host));
 847       host.id = host_id;
 848       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 849         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 850         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 851         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 852         host.power_trace = tmgr_trace_new_from_file(avail_file);
 853         xbt_free(avail_file);
 854       } else {
 855         XBT_DEBUG("\tavailability_file=\"\"");
 856       }
 857
 858       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 859         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 860         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 861         host.state_trace = tmgr_trace_new_from_file(avail_file);
 862         xbt_free(avail_file);
 863       } else {
 864         XBT_DEBUG("\tstate_file=\"\"");
 865       }
 866
 867       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 868       xbt_dynar_push(power_state_list,&cluster->power);
 869       host.power_peak = power_state_list;
 870       host.pstate = 0;
 871
 872       //host.power_peak = cluster->power;
 873       host.power_scale = 1.0;
 874       host.core_amount = cluster->core_amount;
 875       host.initial_state = SURF_RESOURCE_ON;
 876       host.coord = "";
 877       sg_platf_new_host(&host);
 878       XBT_DEBUG("</host>");
 879
 880       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 881                 cluster->bw, cluster->lat);
 882
 883       memset(&link, 0, sizeof(link));
 884       link.id = link_id;
 885       link.bandwidth = cluster->bw;
 886       link.latency = cluster->lat;
 887       link.state = SURF_RESOURCE_ON;
 888       link.policy = cluster->sharing_policy;
 889       sg_platf_new_link(&link);
 890
 891       s_surf_parsing_link_up_down_t info;
 892
 893       if (link.policy == SURF_LINK_FULLDUPLEX) {
 894         char *tmp_link = bprintf("%s_UP", link_id);
 895         info.link_up =
 896             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 897         free(tmp_link);
 898         tmp_link = bprintf("%s_DOWN", link_id);
 899         info.link_down =
 900             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 901         free(tmp_link);
 902       } else {
 903         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 904         info.link_down = info.link_up;
 905       }
 906
 907       if(cluster->limiter_link!=0){
 908         char *tmp_link = bprintf("%s_limiter", link_id);
 909         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 910                 cluster->limiter_link);
 911
 912
 913         memset(&link, 0, sizeof(link));
 914         link.id = tmp_link;
 915         link.bandwidth = cluster->limiter_link;
 916         link.latency = 0;
 917         link.state = SURF_RESOURCE_ON;
 918         link.policy = SURF_LINK_SHARED;
 919         sg_platf_new_link(&link);
 920          info.limiter_link =
 921             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 922         free(tmp_link);
 923       }else{
 924         info.limiter_link =NULL;
 925       }
 926
 927       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 928         char *tmp_link = bprintf("%s_loopback", link_id);
 929         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 930                 cluster->limiter_link);
 931
 932
 933         memset(&link, 0, sizeof(link));
 934         link.id = tmp_link;
 935         link.bandwidth = cluster->loopback_bw;
 936         link.latency = cluster->loopback_lat;
 937         link.state = SURF_RESOURCE_ON;
 938         link.policy = SURF_LINK_FATPIPE;
 939         sg_platf_new_link(&link);
 940          info.loopback_link =
 941             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 942         free(tmp_link);
 943       }else{
 944         info.loopback_link =NULL;
 945       }
 946
 947       xbt_dynar_push(current_routing->link_up_down_list,&info);
 948       xbt_free(link_id);
 949       xbt_free(host_id);
 950     }
 951
 952     xbt_dynar_free(&radical_ends);
 953   }
 954   xbt_dynar_free(&radical_elements);
 955
 956   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 957   // and it's very useful to connect clusters together
 958   XBT_DEBUG(" ");
 959   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 960   char *newid = NULL;
 961   s_sg_platf_router_cbarg_t router;
 962   memset(&router, 0, sizeof(router));
 963   router.id = cluster->router_id;
 964   router.coord = "";
 965   if (!router.id || !strcmp(router.id, ""))
 966     router.id = newid =
 967         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 968                 cluster->suffix);
 969   sg_platf_new_router(&router);
 970   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 971   free(newid);
 972
 973   //Make the backbone
 974   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 975     char *link_backbone = bprintf("%s_backbone", cluster->id);
 976     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 977               cluster->bb_bw, cluster->bb_lat);
 978
 979     memset(&link, 0, sizeof(link));
 980     link.id = link_backbone;
 981     link.bandwidth = cluster->bb_bw;
 982     link.latency = cluster->bb_lat;
 983     link.state = SURF_RESOURCE_ON;
 984     link.policy = cluster->bb_sharing_policy;
 985
 986     sg_platf_new_link(&link);
 987
 988     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 989
 990     free(link_backbone);
 991   }
 992
 993   XBT_DEBUG("</AS>");
 994   sg_platf_new_AS_end();
 995   XBT_DEBUG(" ");
 996   xbt_dict_free(&patterns); // no op if it were never set
 997 }
 998
 999 static void routing_parse_postparse(void) {
1000   xbt_dict_free(&random_value);
1001 }
1002
1003 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1004 {
1005   char *host_id = NULL;
1006   char *link_id;
1007
1008   XBT_DEBUG(" ");
1009   host_id = HOST_PEER(peer->id);
1010   link_id = LINK_PEER(peer->id);
1011
1012   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1013   s_sg_platf_host_cbarg_t host;
1014   memset(&host, 0, sizeof(host));
1015   host.initial_state = SURF_RESOURCE_ON;
1016   host.id = host_id;
1017
1018   xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
1019   xbt_dynar_push(power_state_list,&peer->power);
1020   host.power_peak = power_state_list;
1021   host.pstate = 0;
1022   //host.power_peak = peer->power;
1023   host.power_scale = 1.0;
1024   host.power_trace = peer->availability_trace;
1025   host.state_trace = peer->state_trace;
1026   host.core_amount = 1;
1027   host.coord = peer->coord;
1028   sg_platf_new_host(&host);
1029
1030   s_sg_platf_link_cbarg_t link;
1031   memset(&link, 0, sizeof(link));
1032   link.state = SURF_RESOURCE_ON;
1033   link.policy = SURF_LINK_SHARED;
1034   link.latency = peer->lat;
1035
1036   char* link_up = bprintf("%s_UP",link_id);
1037   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1038             peer->bw_out, peer->lat);
1039   link.id = link_up;
1040   link.bandwidth = peer->bw_out;
1041   sg_platf_new_link(&link);
1042
1043   char* link_down = bprintf("%s_DOWN",link_id);
1044   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1045             peer->bw_in, peer->lat);
1046   link.id = link_down;
1047   link.bandwidth = peer->bw_in;
1048   sg_platf_new_link(&link);
1049
1050   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1051   s_sg_platf_host_link_cbarg_t host_link;
1052   memset(&host_link, 0, sizeof(host_link));
1053   host_link.id = host_id;
1054   host_link.link_up = link_up;
1055   host_link.link_down= link_down;
1056   sg_platf_new_host_link(&host_link);
1057
1058   XBT_DEBUG(" ");
1059
1060   //xbt_dynar_free(&tab_elements_num);
1061   free(host_id);
1062   free(link_id);
1063   free(link_up);
1064   free(link_down);
1065 }
1066
1067 static void routing_parse_Srandom(void)
1068 {
1069   double mean, std, min, max, seed;
1070   char *random_id = A_surfxml_random_id;
1071   char *random_radical = A_surfxml_random_radical;
1072   char *rd_name = NULL;
1073   char *rd_value;
1074   mean = surf_parse_get_double(A_surfxml_random_mean);
1075   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1076   min = surf_parse_get_double(A_surfxml_random_min);
1077   max = surf_parse_get_double(A_surfxml_random_max);
1078   seed = surf_parse_get_double(A_surfxml_random_seed);
1079
1080   double res = 0;
1081   int i = 0;
1082   random_data_t random = xbt_new0(s_random_data_t, 1);
1083   char *tmpbuf;
1084
1085   xbt_dynar_t radical_elements;
1086   unsigned int iter;
1087   char *groups;
1088   int start, end;
1089   xbt_dynar_t radical_ends;
1090
1091   switch (A_surfxml_random_generator) {
1092   case AU_surfxml_random_generator:
1093   case A_surfxml_random_generator_NONE:
1094     random->generator = NONE;
1095     break;
1096   case A_surfxml_random_generator_DRAND48:
1097     random->generator = DRAND48;
1098     break;
1099   case A_surfxml_random_generator_RAND:
1100     random->generator = RAND;
1101     break;
1102   case A_surfxml_random_generator_RNGSTREAM:
1103     random->generator = RNGSTREAM;
1104     break;
1105   default:
1106     surf_parse_error("Invalid random generator");
1107     break;
1108   }
1109   random->seed = seed;
1110   random->min = min;
1111   random->max = max;
1112
1113   /* Check user stupidities */
1114   if (max < min)
1115     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1116   if (mean < min)
1117     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1118   if (mean > max)
1119     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1120
1121   /* normalize the mean and standard deviation before storing */
1122   random->mean = (mean - min) / (max - min);
1123   random->std = std / (max - min);
1124
1125   if (random->mean * (1 - random->mean) < random->std * random->std)
1126     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1127            random->mean, random->std);
1128
1129   XBT_DEBUG
1130       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1131        random_id, random->min, random->max, random->mean, random->std,
1132        (int)random->generator, random->seed, random_radical);
1133
1134   if (!random_value)
1135     random_value = xbt_dict_new_homogeneous(free);
1136
1137   if (!strcmp(random_radical, "")) {
1138     res = random_generate(random);
1139     rd_value = bprintf("%f", res);
1140     xbt_dict_set(random_value, random_id, rd_value, NULL);
1141   } else {
1142     radical_elements = xbt_str_split(random_radical, ",");
1143     xbt_dynar_foreach(radical_elements, iter, groups) {
1144       radical_ends = xbt_str_split(groups, "-");
1145       switch (xbt_dynar_length(radical_ends)) {
1146       case 1:
1147         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1148                    "Custom Random '%s' already exists !", random_id);
1149         res = random_generate(random);
1150         tmpbuf =
1151             bprintf("%s%d", random_id,
1152                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1153         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1154         xbt_free(tmpbuf);
1155         break;
1156
1157       case 2:
1158         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1159         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1160         for (i = start; i <= end; i++) {
1161           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1162                      "Custom Random '%s' already exists !", bprintf("%s%d",
1163                                                                     random_id,
1164                                                                     i));
1165           res = random_generate(random);
1166           tmpbuf = bprintf("%s%d", random_id, i);
1167           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1168           xbt_free(tmpbuf);
1169         }
1170         break;
1171       default:
1172         XBT_CRITICAL("Malformed radical");
1173         break;
1174       }
1175       res = random_generate(random);
1176       rd_name = bprintf("%s_router", random_id);
1177       rd_value = bprintf("%f", res);
1178       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1179
1180       xbt_dynar_free(&radical_ends);
1181     }
1182     free(rd_name);
1183     xbt_dynar_free(&radical_elements);
1184   }
1185 }
1186
1187 void routing_register_callbacks()
1188 {
1189   sg_platf_host_add_cb(parse_S_host);
1190   sg_platf_router_add_cb(parse_S_router);
1191   sg_platf_host_link_add_cb(parse_S_host_link);
1192   sg_platf_route_add_cb(parse_E_route);
1193   sg_platf_ASroute_add_cb(parse_E_ASroute);
1194   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1195   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1196
1197   sg_platf_cluster_add_cb(routing_parse_cluster);
1198   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1199
1200   sg_platf_peer_add_cb(routing_parse_peer);
1201   sg_platf_postparse_add_cb(routing_parse_postparse);
1202
1203   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1204   sg_platf_AS_end_add_cb(routing_AS_end);
1205   sg_platf_AS_begin_add_cb(routing_AS_begin);
1206
1207   sg_platf_trace_add_cb(routing_parse_trace);
1208   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1209
1210 #ifdef HAVE_TRACING
1211   instr_routing_define_callbacks();
1212 #endif
1213 }
1214
1215 /**
1216  * \brief Recursive function for finalize
1217  *
1218  * \param rc the source host name
1219  *
1220  * This fuction is call by "finalize". It allow to finalize the
1221  * AS or routing components. It delete all the structures.
1222  */
1223 static void finalize_rec(AS_t as) {
1224   xbt_dict_cursor_t cursor = NULL;
1225   char *key;
1226   AS_t elem;
1227
1228   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1229     finalize_rec(elem);
1230   }
1231
1232   as->finalize(as);
1233 }
1234
1235 /** \brief Frees all memory allocated by the routing module */
1236 void routing_exit(void) {
1237   if (!routing_platf)
1238     return;
1239   xbt_dynar_free(&routing_platf->last_route);
1240   finalize_rec(routing_platf->root);
1241   xbt_free(routing_platf);
1242 }
1243
1244 AS_t surf_AS_get_routing_root() {
1245   return routing_platf->root;
1246 }
1247
1248 const char *surf_AS_get_name(AS_t as) {
1249   return as->name;
1250 }
1251
1252 xbt_dict_t surf_AS_get_routing_sons(AS_t as) {
1253   return as->routing_sons;
1254 }
1255
1256 const char *surf_AS_get_model(AS_t as) {
1257   return as->model_desc->name;
1258 }
1259
1260 xbt_dynar_t surf_AS_get_hosts(AS_t as) {
1261   xbt_dynar_t elms = as->index_network_elm;
1262   sg_routing_edge_t relm;
1263   xbt_dictelm_t delm;
1264   int index;
1265   int count = xbt_dynar_length(elms);
1266   xbt_dynar_t res =  xbt_dynar_new(sizeof(xbt_dictelm_t), NULL);
1267   for (index = 0; index < count; index++) {
1268      relm = xbt_dynar_get_as(elms, index, sg_routing_edge_t);
1269      delm = xbt_lib_get_elm_or_null(host_lib, relm->name);
1270      if (delm!=NULL) {
1271        xbt_dynar_push(res, &delm);
1272      }
1273   }
1274   return res;
1275 }