src/surf/surf_routing.cpp

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