src/surf/surf_routing.cpp

   1 /* Copyright (c) 2009, 2010, 2011, 2013. 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 "surf_routing.hpp"
   8 #include "surf_routing_private.hpp"
   9 #include "surf_routing_cluster.hpp"
  10
  11 #include "simgrid/platf_interface.h"    // platform creation API internal interface
  12 #include "simgrid/sg_config.h"
  13
  14 #include "surf/surfxml_parse_values.h"
  15
  16 /**
  17  * @ingroup SURF_build_api
  18  * @brief A library containing all known workstations
  19  */
  20 xbt_lib_t host_lib;
  21
  22 int ROUTING_HOST_LEVEL;         //Routing level
  23 int SURF_CPU_LEVEL;             //Surf cpu level
  24 int SURF_WKS_LEVEL;             //Surf workstation level
  25 int SIMIX_HOST_LEVEL;           //Simix host level
  26 int SIMIX_STORAGE_LEVEL;        //Simix storage level
  27 int MSG_HOST_LEVEL;             //Msg host level
  28 int MSG_STORAGE_LEVEL;          //Msg storage level
  29 int SD_HOST_LEVEL;              //Simdag host level
  30 int SD_STORAGE_LEVEL;           //Simdag storage level
  31 int COORD_HOST_LEVEL=0;         //Coordinates level
  32 int NS3_HOST_LEVEL;             //host node for ns3
  33
  34 /**
  35  * @ingroup SURF_build_api
  36  * @brief A library containing all known links
  37  */
  38 xbt_lib_t link_lib;
  39 int SD_LINK_LEVEL;              //Simdag level
  40 int SURF_LINK_LEVEL;            //Surf level
  41 int NS3_LINK_LEVEL;             //link for ns3
  42
  43 xbt_lib_t as_router_lib;
  44 int ROUTING_ASR_LEVEL;          //Routing level
  45 int COORD_ASR_LEVEL;            //Coordinates level
  46 int NS3_ASR_LEVEL;              //host node for ns3
  47 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  48
  49 static xbt_dict_t random_value = NULL;
  50
  51
  52 /** @brief Retrieve a routing edge from its name
  53  *
  54  * Routing edges are either CPU/workstation and routers, whatever
  55  */
  56 RoutingEdgePtr sg_routing_edge_by_name_or_null(const char *name) {
  57   RoutingEdgePtr net_elm = (RoutingEdgePtr) xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  58   if (!net_elm)
  59         net_elm = (RoutingEdgePtr) xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  60   return net_elm;
  61 }
  62
  63 /* Global vars */
  64 RoutingPlatfPtr routing_platf = NULL;
  65 AsPtr current_routing = NULL;
  66
  67 /* global parse functions */
  68 extern xbt_dynar_t mount_list;
  69
  70 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  71
  72 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  73 // static void routing_parse_Srandom(void);        /* random bypass */
  74
  75 static void routing_parse_postparse(void);
  76
  77 /* this lines are only for replace use like index in the model table */
  78 typedef enum {
  79   SURF_MODEL_FULL = 0,
  80   SURF_MODEL_FLOYD,
  81   SURF_MODEL_DIJKSTRA,
  82   SURF_MODEL_DIJKSTRACACHE,
  83   SURF_MODEL_NONE,
  84   SURF_MODEL_VIVALDI,
  85   SURF_MODEL_CLUSTER
  86 } e_routing_types;
  87
  88 struct s_model_type routing_models[] = {
  89   {"Full",
  90    "Full routing data (fast, large memory requirements, fully expressive)",
  91    model_full_create, model_full_end},
  92   {"Floyd",
  93    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  94    model_floyd_create, model_floyd_end},
  95   {"Dijkstra",
  96    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  97    model_dijkstra_create, model_dijkstra_both_end},
  98   {"DijkstraCache",
  99    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
 100    model_dijkstracache_create, model_dijkstra_both_end},
 101   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
 102    model_none_create,  NULL},
 103   {"Vivaldi", "Vivaldi routing",
 104    model_vivaldi_create, NULL},
 105   {"Cluster", "Cluster routing",
 106    model_cluster_create, NULL},
 107   {NULL, NULL, NULL, NULL}
 108 };
 109
 110 /**
 111  * \brief Add a "host_link" to the network element list
 112  */
 113 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 114 {
 115   RoutingEdgePtr info = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL));
 116   xbt_assert(info, "Host '%s' not found!", host->id);
 117   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER] ||
 118       current_routing->p_modelDesc == &routing_models[SURF_MODEL_VIVALDI],
 119       "You have to be in model Cluster to use tag host_link!");
 120
 121   s_surf_parsing_link_up_down_t link_up_down;
 122   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 123   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 124
 125   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 126   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 127
 128   if(!current_routing->p_linkUpDownList)
 129     current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 130
 131   // If dynar is is greater than edge id and if the host_link is already defined
 132   if((int)xbt_dynar_length(current_routing->p_linkUpDownList) > info->m_id &&
 133       xbt_dynar_get_as(current_routing->p_linkUpDownList, info->m_id, void*))
 134     xbt_die("Host_link for '%s' is already defined!",host->id);
 135
 136   XBT_DEBUG("Push Host_link for host '%s' to position %d", info->p_name, info->m_id);
 137   xbt_dynar_set_as(current_routing->p_linkUpDownList, info->m_id, s_surf_parsing_link_up_down_t, link_up_down);
 138 }
 139
 140 /**
 141  * \brief Add a "host" to the network element list
 142  */
 143 static void parse_S_host(sg_platf_host_cbarg_t host)
 144 {
 145   if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 146     current_routing->p_hierarchy = SURF_ROUTING_BASE;
 147   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 148              "Reading a host, processing unit \"%s\" already exists", host->id);
 149
 150   RoutingEdgePtr info = new RoutingEdge();
 151   info->p_rcComponent = current_routing;
 152   info->p_rcType = SURF_NETWORK_ELEMENT_HOST;
 153   info->p_name = xbt_strdup(host->id);
 154   info->m_id = current_routing->parsePU(info);
 155   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 156   XBT_DEBUG("Having set name '%s' id '%d'", host->id, info->m_id);
 157
 158   if(mount_list){
 159     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 160     mount_list = NULL;
 161   }
 162
 163   if (host->coord && strcmp(host->coord, "")) {
 164     unsigned int cursor;
 165     char*str;
 166
 167     if (!COORD_HOST_LEVEL)
 168       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 169     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 170     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 171     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 172     xbt_dynar_foreach(ctn_str,cursor, str) {
 173       double val = atof(str);
 174       xbt_dynar_push(ctn,&val);
 175     }
 176     xbt_dynar_shrink(ctn, 0);
 177     xbt_dynar_free(&ctn_str);
 178     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 179     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 180   }
 181 }
 182
 183 /**
 184  * \brief Add a "router" to the network element list
 185  */
 186 static void parse_S_router(sg_platf_router_cbarg_t router)
 187 {
 188   if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 189     current_routing->p_hierarchy = SURF_ROUTING_BASE;
 190   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 191              "Reading a router, processing unit \"%s\" already exists",
 192              router->id);
 193
 194   RoutingEdgePtr info = new RoutingEdge();
 195   info->p_rcComponent = current_routing;
 196   info->p_rcType = SURF_NETWORK_ELEMENT_ROUTER;
 197   info->p_name = xbt_strdup(router->id);
 198   info->m_id = current_routing->parsePU(info);
 199   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 200   XBT_DEBUG("Having set name '%s' id '%d'", router->id, info->m_id);
 201
 202   if (router->coord && strcmp(router->coord, "")) {
 203     unsigned int cursor;
 204     char*str;
 205
 206     if (!COORD_ASR_LEVEL)
 207       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 208     /* Pre-parse the host coordinates */
 209     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 210     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 211     xbt_dynar_foreach(ctn_str,cursor, str) {
 212       double val = atof(str);
 213       xbt_dynar_push(ctn,&val);
 214     }
 215     xbt_dynar_shrink(ctn, 0);
 216     xbt_dynar_free(&ctn_str);
 217     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 218     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 219   }
 220 }
 221
 222 /**
 223  * \brief Store the route by calling the set_route function of the current routing component
 224  */
 225 static void parse_E_route(sg_platf_route_cbarg_t route)
 226 {
 227   /*FIXME:REMOVE:xbt_assert(current_routing->parse_route,
 228              "no defined method \"set_route\" in \"%s\"",
 229              current_routing->name);*/
 230
 231   current_routing->parseRoute(route);
 232 }
 233
 234 /**
 235  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 236  */
 237 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 238 {
 239   /*FIXME:REMOVE:xbt_assert(current_routing->parse_ASroute,
 240              "no defined method \"set_ASroute\" in \"%s\"",
 241              current_routing->name);*/
 242   current_routing->parseASroute(ASroute);
 243 }
 244
 245 /**
 246  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 247  */
 248 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 249 {
 250   /*FIXME:REMOVE:xbt_assert(current_routing->parse_bypassroute,
 251              "Bypassing mechanism not implemented by routing '%s'",
 252              current_routing->name);*/
 253
 254   current_routing->parseBypassroute(route);
 255 }
 256
 257 /**
 258  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 259  */
 260 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 261 {
 262   /*FIXME:REMOVE:xbt_assert(current_routing->parse_bypassroute,
 263              "Bypassing mechanism not implemented by routing '%s'",
 264              current_routing->name);*/
 265   current_routing->parseBypassroute(ASroute);
 266 }
 267
 268 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 269 {
 270   tmgr_trace_t tmgr_trace;
 271   if (!trace->file || strcmp(trace->file, "") != 0) {
 272     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 273   } else if (strcmp(trace->pc_data, "") == 0) {
 274     tmgr_trace = NULL;
 275   } else {
 276     tmgr_trace =
 277           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 278                                      trace->periodicity);
 279   }
 280   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 281 }
 282
 283 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 284 {
 285   xbt_assert(xbt_dict_get_or_null
 286               (traces_set_list, trace_connect->trace),
 287               "Cannot connect trace %s to %s: trace unknown",
 288               trace_connect->trace,
 289               trace_connect->element);
 290
 291   switch (trace_connect->kind) {
 292   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 293     xbt_dict_set(trace_connect_list_host_avail,
 294         trace_connect->trace,
 295         xbt_strdup(trace_connect->element), NULL);
 296     break;
 297   case SURF_TRACE_CONNECT_KIND_POWER:
 298     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 299         xbt_strdup(trace_connect->element), NULL);
 300     break;
 301   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 302     xbt_dict_set(trace_connect_list_link_avail,
 303         trace_connect->trace,
 304         xbt_strdup(trace_connect->element), NULL);
 305     break;
 306   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 307     xbt_dict_set(trace_connect_list_bandwidth,
 308         trace_connect->trace,
 309         xbt_strdup(trace_connect->element), NULL);
 310     break;
 311   case SURF_TRACE_CONNECT_KIND_LATENCY:
 312     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 313         xbt_strdup(trace_connect->element), NULL);
 314     break;
 315   default:
 316     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 317         trace_connect->trace, trace_connect->element);
 318     break;
 319   }
 320 }
 321
 322 /**
 323  * \brief Make a new routing component to the platform
 324  *
 325  * Add a new autonomous system to the platform. Any elements (such as host,
 326  * router or sub-AS) added after this call and before the corresponding call
 327  * to sg_platf_new_AS_close() will be added to this AS.
 328  *
 329  * Once this function was called, the configuration concerning the used
 330  * models cannot be changed anymore.
 331  *
 332  * @param AS_id name of this autonomous system. Must be unique in the platform
 333  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 334  */
 335 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 336 {
 337   XBT_DEBUG("routing_AS_begin");
 338   routing_model_description_t model = NULL;
 339
 340   xbt_assert(!xbt_lib_get_or_null
 341              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 342              "The AS \"%s\" already exists", AS->id);
 343
 344   _sg_cfg_init_status = 2; /* horrible hack: direct access to the global
 345                             * controlling the level of configuration to prevent
 346                             * 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   AsPtr new_as = model->create();
 363
 364   new_as->p_modelDesc = model;
 365   new_as->p_hierarchy = SURF_ROUTING_NULL;
 366   new_as->p_name = xbt_strdup(AS->id);
 367
 368   RoutingEdgePtr info = new RoutingEdge();
 369
 370   if (current_routing == NULL && routing_platf->p_root == NULL) {
 371
 372     /* it is the first one */
 373     new_as->p_routingFather = NULL;
 374     routing_platf->p_root = new_as;
 375     info->m_id = -1;
 376   } else if (current_routing != NULL && routing_platf->p_root != NULL) {
 377
 378     xbt_assert(!xbt_dict_get_or_null
 379                (current_routing->p_routingSons, AS->id),
 380                "The AS \"%s\" already exists", AS->id);
 381     /* it is a part of the tree */
 382     new_as->p_routingFather = current_routing;
 383     /* set the father behavior */
 384     if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 385       current_routing->p_hierarchy = SURF_ROUTING_RECURSIVE;
 386     /* add to the sons dictionary */
 387     xbt_dict_set(current_routing->p_routingSons, AS->id,
 388                  (void *) new_as, NULL);
 389     /* add to the father element list */
 390     info->m_id = current_routing->parseAS(info);
 391   } else {
 392     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 393   }
 394
 395   info->p_rcComponent = new_as->p_routingFather;
 396   info->p_rcType = SURF_NETWORK_ELEMENT_AS;
 397   info->p_name = xbt_strdup(new_as->p_name);
 398
 399   xbt_lib_set(as_router_lib, info->p_name, ROUTING_ASR_LEVEL,
 400               (void *) info);
 401   XBT_DEBUG("Having set name '%s' id '%d'", new_as->p_name, info->m_id);
 402
 403   /* set the new current component of the tree */
 404   current_routing = new_as;
 405   current_routing->p_netElem = 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->p_modelDesc->end)
 427       current_routing->p_modelDesc->end(current_routing);
 428     current_routing = current_routing->p_routingFather;
 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   AsPtr src_as, dst_as;
 451   AsPtr path_src[ELEMENTS_FATHER_MAXDEPTH];
 452   AsPtr path_dst[ELEMENTS_FATHER_MAXDEPTH];
 453   int index_src = 0;
 454   int index_dst = 0;
 455   AsPtr current;
 456   AsPtr current_src;
 457   AsPtr current_dst;
 458   AsPtr 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->p_rcComponent;
 464   dst_as = dst_data->p_rcComponent;
 465 #ifndef NDEBUG
 466   char* src_name = src_data->p_name;
 467   char* dst_name = dst_data->p_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->p_routingFather) {
 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->p_routingFather) {
 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(RoutingEdgePtr src, RoutingEdgePtr 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->p_name, dst->p_name);
 526
 527   /* Find how src and dst are interconnected */
 528   AsPtr 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->p_name, src_father->p_name, dst_father->p_name);
 532
 533   /* Check whether a direct bypass is defined */
 534   sg_platf_route_cbarg_t e_route_bypass = NULL;
 535   //FIXME:REMOVE:if (common_father->get_bypass_route)
 536
 537   e_route_bypass = common_father->getBypassRoute(src, dst, latency);
 538
 539   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 540   if (e_route_bypass) {
 541     xbt_dynar_merge(links, &e_route_bypass->link_list);
 542     generic_free_route(e_route_bypass);
 543     return;
 544   }
 545
 546   /* If src and dst are in the same AS, life is good */
 547   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 548     route.link_list = *links;
 549     common_father->getRouteAndLatency(src, dst, &route, latency);
 550     // if vivaldi latency+=vivaldi(src,dst)
 551     return;
 552   }
 553
 554   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 555
 556   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 557   // Find the net_card corresponding to father
 558   RoutingEdgePtr src_father_net_elm = src_father->p_netElem;
 559   RoutingEdgePtr dst_father_net_elm = dst_father->p_netElem;
 560
 561   common_father->getRouteAndLatency(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->p_name, dst->p_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 AS_t surf_platf_get_root(routing_platf_t platf){
 583   return platf->p_root;
 584 }
 585
 586 e_surf_network_element_type_t surf_routing_edge_get_rc_type(sg_routing_edge_t edge){
 587   return edge->p_rcType;
 588 }
 589
 590
 591 /**
 592  * \brief Find a route between hosts
 593  *
 594  * \param src the network_element_t for src host
 595  * \param dst the network_element_t for dst host
 596  * \param route where to store the list of links.
 597  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 598  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 599  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 600  * \pre route!=NULL
 601  *
 602  * walk through the routing components tree and find a route between hosts
 603  * by calling the differents "get_route" functions in each routing component.
 604  */
 605 void RoutingPlatf::getRouteAndLatency(RoutingEdgePtr src, RoutingEdgePtr dst,
 606                                    xbt_dynar_t* route, double *latency)
 607 {
 608   XBT_DEBUG("routing_get_route_and_latency from %s to %s", src->p_name, dst->p_name);
 609   if (!*route) {
 610     xbt_dynar_reset(routing_platf->p_lastRoute);
 611     *route = routing_platf->p_lastRoute;
 612   }
 613
 614   _get_route_and_latency(src, dst, route, latency);
 615
 616   xbt_assert(!latency || *latency >= 0.0,
 617              "negative latency on route between \"%s\" and \"%s\"", src->p_name, dst->p_name);
 618 }
 619
 620 xbt_dynar_t RoutingPlatf::getOneLinkRoutes(){
 621   return recursiveGetOneLinkRoutes(p_root);
 622 }
 623
 624 xbt_dynar_t RoutingPlatf::recursiveGetOneLinkRoutes(AsPtr rc)
 625 {
 626   xbt_dynar_t ret = xbt_dynar_new(sizeof(OnelinkPtr), xbt_free);
 627
 628   //adding my one link routes
 629   xbt_dynar_t onelink_mine = rc->getOneLinkRoutes();
 630   if (onelink_mine)
 631     xbt_dynar_merge(&ret,&onelink_mine);
 632
 633   //recursing
 634   char *key;
 635   xbt_dict_cursor_t cursor = NULL;
 636   AS_t rc_child;
 637   xbt_dict_foreach(rc->p_routingSons, cursor, key, rc_child) {
 638     xbt_dynar_t onelink_child = recursiveGetOneLinkRoutes(rc_child);
 639     if (onelink_child)
 640       xbt_dynar_merge(&ret,&onelink_child);
 641   }
 642   return ret;
 643 }
 644
 645 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 646 {
 647   RoutingEdgePtr rc = sg_routing_edge_by_name_or_null(name);
 648   if (rc)
 649     return rc->p_rcType;
 650
 651   return SURF_NETWORK_ELEMENT_NULL;
 652 }
 653
 654 /**
 655  * \brief Generic method: create the global routing schema
 656  *
 657  * Make a global routing structure and set all the parsing functions.
 658  */
 659 void routing_model_create( void *loopback)
 660 {
 661   /* config the uniq global routing */
 662   routing_platf = new RoutingPlatf();
 663   routing_platf->p_root = NULL;
 664   routing_platf->p_loopback = loopback;
 665   routing_platf->p_lastRoute = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 666   /* no current routing at moment */
 667   current_routing = NULL;
 668 }
 669
 670
 671 /* ************************************************** */
 672 /* ********** PATERN FOR NEW ROUTING **************** */
 673
 674 /* The minimal configuration of a new routing model need the next functions,
 675  * also you need to set at the start of the file, the new model in the model
 676  * list. Remember keep the null ending of the list.
 677  */
 678 /*** Routing model structure ***/
 679 // typedef struct {
 680 //   s_routing_component_t generic_routing;
 681 //   /* things that your routing model need */
 682 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 683
 684 /*** Parse routing model functions ***/
 685 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 686 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 687 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 688 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 689 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 690
 691 /*** Business methods ***/
 692 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 693 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 694 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 695
 696 /*** Creation routing model functions ***/
 697 // static void* model_NEW_create(void) {
 698 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 699 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 700 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 701 //   new_component->generic_routing.set_route = model_NEW_set_route;
 702 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 703 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 704 //   new_component->generic_routing.get_route = NEW_get_route;
 705 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 706 //   new_component->generic_routing.finalize = NEW_finalize;
 707 //   /* initialization of internal structures */
 708 //   return new_component;
 709 // } /* mandatory */
 710 // static void  model_NEW_load(void) {}   /* mandatory */
 711 // static void  model_NEW_unload(void) {} /* mandatory */
 712 // static void  model_NEW_end(void) {}    /* mandatory */
 713
 714 /* ************************************************************************** */
 715 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 716
 717 void routing_cluster_add_backbone(void* bb) {
 718   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER],
 719         "You have to be in model Cluster to use tag backbone!");
 720   xbt_assert(!surf_as_cluster_get_backbone(current_routing), "The backbone link is already defined!");
 721   surf_as_cluster_set_backbone(current_routing, bb);
 722   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->p_name);
 723 }
 724
 725 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 726 {
 727   int start, end, i;
 728   char *groups , *host_id , *link_id = NULL;
 729   unsigned int iter;
 730   xbt_dynar_t radical_elements;
 731   xbt_dynar_t radical_ends;
 732
 733   //Make all hosts
 734   radical_elements = xbt_str_split(cabinet->radical, ",");
 735   xbt_dynar_foreach(radical_elements, iter, groups) {
 736
 737     radical_ends = xbt_str_split(groups, "-");
 738     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 739
 740     switch (xbt_dynar_length(radical_ends)) {
 741     case 1:
 742       end = start;
 743       break;
 744     case 2:
 745       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 746       break;
 747     default:
 748       surf_parse_error("Malformed radical");
 749       break;
 750     }
 751     s_sg_platf_host_cbarg_t host;
 752     memset(&host, 0, sizeof(host));
 753     host.initial_state = SURF_RESOURCE_ON;
 754     host.pstate = 0;
 755     host.power_scale = 1.0;
 756     host.core_amount = 1;
 757
 758     s_sg_platf_link_cbarg_t link;
 759     memset(&link, 0, sizeof(link));
 760     link.state = SURF_RESOURCE_ON;
 761     link.policy = SURF_LINK_FULLDUPLEX;
 762     link.latency = cabinet->lat;
 763     link.bandwidth = cabinet->bw;
 764
 765     s_sg_platf_host_link_cbarg_t host_link;
 766     memset(&host_link, 0, sizeof(host_link));
 767
 768     for (i = start; i <= end; i++) {
 769       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 770       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 771       host.id = host_id;
 772       link.id = link_id;
 773       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 774       xbt_dynar_push(power_state_list,&cabinet->power);
 775       host.power_peak = power_state_list;
 776       sg_platf_new_host(&host);
 777       sg_platf_new_link(&link);
 778
 779       char* link_up = bprintf("%s_UP",link_id);
 780       char* link_down = bprintf("%s_DOWN",link_id);
 781       host_link.id = host_id;
 782       host_link.link_up = link_up;
 783       host_link.link_down= link_down;
 784       sg_platf_new_host_link(&host_link);
 785
 786       free(host_id);
 787       free(link_id);
 788       free(link_up);
 789       free(link_down);
 790     }
 791
 792     xbt_dynar_free(&radical_ends);
 793   }
 794   xbt_dynar_free(&radical_elements);
 795 }
 796
 797 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 798 {
 799   char *host_id, *groups, *link_id = NULL;
 800   xbt_dict_t patterns = NULL;
 801   xbt_dynar_t dimensions;
 802   int rankId=0;
 803
 804   s_sg_platf_host_cbarg_t host;
 805   s_sg_platf_link_cbarg_t link;
 806
 807   unsigned int iter, totalRanks=0;
 808   int start, end, i;
 809   xbt_dynar_t radical_elements;
 810   xbt_dynar_t radical_ends;
 811
 812   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 813       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 814     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 815     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 816     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 817     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 818   }
 819
 820   dimensions = xbt_str_split(cluster->torus_dimensions, ",");
 821
 822
 823   int nb_links_per_node = 1;
 824
 825   if (!xbt_dynar_is_empty(dimensions)) {
 826     /**
 827      * We are in a torus cluster
 828      * Parse attribute dimensions="dim1,dim2,dim3,...,dimN"
 829      * and safe it in a dynarray.
 830      * Additionally, we need to know how many ranks we have in total
 831      */
 832     xbt_dynar_foreach(dimensions, iter, groups) {
 833         int tmp = surf_parse_get_int(xbt_dynar_get_as(dimensions, iter, char *));
 834         xbt_dynar_set_as(dimensions, iter, int, tmp);
 835
 836         if (totalRanks == 0)
 837             totalRanks = tmp;
 838         else
 839             totalRanks *= tmp;
 840     }
 841
 842     nb_links_per_node = xbt_dynar_length(dimensions);
 843     ((AsClusterPtr)current_routing)-> p_dimensions = dimensions;
 844
 845   }
 846
 847   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 848       nb_links_per_node++;
 849       ((AsClusterPtr)current_routing)->p_has_loopback=1;
 850   }
 851
 852   if(cluster->limiter_link!=0){
 853       nb_links_per_node++;
 854       ((AsClusterPtr)current_routing)->p_has_limiter=1;
 855   }
 856
 857   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 858   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 859   AS.id = cluster->id;
 860   AS.routing = A_surfxml_AS_routing_Cluster;
 861   sg_platf_new_AS_begin(&AS);
 862
 863   current_routing->p_linkUpDownList
 864             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 865
 866   //Make all hosts
 867   radical_elements = xbt_str_split(cluster->radical, ",");
 868   xbt_dynar_foreach(radical_elements, iter, groups) {
 869
 870     radical_ends = xbt_str_split(groups, "-");
 871     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 872
 873     switch (xbt_dynar_length(radical_ends)) {
 874     case 1:
 875       end = start;
 876       break;
 877     case 2:
 878       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 879       break;
 880     default:
 881       surf_parse_error("Malformed radical");
 882       break;
 883     }
 884     for (i = start; i <= end; i++) {
 885       host_id =
 886           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 887       link_id = bprintf("%s_link_%d", cluster->id, i);
 888
 889       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 890
 891       memset(&host, 0, sizeof(host));
 892       host.id = host_id;
 893       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 894         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 895         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 896         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 897         host.power_trace = tmgr_trace_new_from_file(avail_file);
 898         xbt_free(avail_file);
 899       } else {
 900         XBT_DEBUG("\tavailability_file=\"\"");
 901       }
 902
 903       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 904         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 905         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 906         host.state_trace = tmgr_trace_new_from_file(avail_file);
 907         xbt_free(avail_file);
 908       } else {
 909         XBT_DEBUG("\tstate_file=\"\"");
 910       }
 911
 912       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 913       xbt_dynar_push(power_state_list,&cluster->power);
 914       host.power_peak = power_state_list;
 915       host.pstate = 0;
 916
 917       //host.power_peak = cluster->power;
 918       host.power_scale = 1.0;
 919       host.core_amount = cluster->core_amount;
 920       host.initial_state = SURF_RESOURCE_ON;
 921       host.coord = "";
 922       sg_platf_new_host(&host);
 923       XBT_DEBUG("</host>");
 924
 925       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 926                 cluster->bw, cluster->lat);
 927
 928
 929       s_surf_parsing_link_up_down_t info, info_lim, info_loop;
 930       // All links are saved in a matrix;
 931       // every row describes a single node; every node
 932       // may have multiple links.
 933       // the first column may store a link from x to x if p_has_loopback is set
 934       // the second column may store a limiter link if p_has_limiter is set
 935       // other columns are to store one or more link, if we are in a torus
 936
 937       //add a loopback link
 938       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 939         char *tmp_link = bprintf("%s_loopback", link_id);
 940         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 941                 cluster->limiter_link);
 942
 943
 944         memset(&link, 0, sizeof(link));
 945         link.id = tmp_link;
 946         link.bandwidth = cluster->loopback_bw;
 947         link.latency = cluster->loopback_lat;
 948         link.state = SURF_RESOURCE_ON;
 949         link.policy = SURF_LINK_FATPIPE;
 950         sg_platf_new_link(&link);
 951         info_loop.link_up =
 952             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 953         info_loop.link_down = info.link_up;
 954         free(tmp_link);
 955         xbt_dynar_set(current_routing->p_linkUpDownList, rankId*nb_links_per_node, &info_loop);
 956       }
 957
 958       //add a limiter link (shared link to account for maximal bandwidth of the node)
 959       if(cluster->limiter_link!=0){
 960         char *tmp_link = bprintf("%s_limiter", link_id);
 961         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 962                 cluster->limiter_link);
 963
 964
 965         memset(&link, 0, sizeof(link));
 966         link.id = tmp_link;
 967         link.bandwidth = cluster->limiter_link;
 968         link.latency = 0;
 969         link.state = SURF_RESOURCE_ON;
 970         link.policy = SURF_LINK_SHARED;
 971         sg_platf_new_link(&link);
 972         info_lim.link_up =
 973             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 974         info_lim.link_down = info.link_up;
 975         free(tmp_link);
 976         xbt_dynar_set(current_routing->p_linkUpDownList,
 977             rankId*nb_links_per_node + ((AsClusterPtr)current_routing)->p_has_loopback ,
 978             &info_lim);
 979
 980       }
 981
 982
 983
 984       if(xbt_dynar_length(dimensions) == 0 ) {
 985         /**
 986          * If torus is not specified, generate one link by node
 987          */
 988
 989         memset(&link, 0, sizeof(link));
 990         link.id = link_id;
 991         link.bandwidth = cluster->bw;
 992         link.latency = cluster->lat;
 993         link.state = SURF_RESOURCE_ON;
 994         link.policy = cluster->sharing_policy;
 995         sg_platf_new_link(&link);
 996
 997         if (link.policy == SURF_LINK_FULLDUPLEX) {
 998           char *tmp_link = bprintf("%s_UP", link_id);
 999           info.link_up =
1000               xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
1001           free(tmp_link);
1002           tmp_link = bprintf("%s_DOWN", link_id);
1003           info.link_down =
1004               xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
1005           free(tmp_link);
1006         } else {
1007           info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
1008           info.link_down = info.link_up;
1009         }
1010         xbt_dynar_set(current_routing->p_linkUpDownList, rankId*nb_links_per_node
1011             + ((AsClusterPtr)current_routing)->p_has_loopback
1012             + ((AsClusterPtr)current_routing)->p_has_limiter,
1013             &info);
1014       }else{
1015
1016         unsigned int j = 0;
1017         /**
1018          * Create all links that exist in the torus.
1019          * Each rank creates #dimensions-1 links
1020          */
1021         int neighbour_rank_id = 0; // The other node the link connects
1022         int current_dimension = 0, // which dimension are we currently in?
1023                                    // we need to iterate over all dimensions
1024                                    // and create all links there
1025             dim_product       = 1; // Needed to calculate the next neighbour_id
1026         for (j = 0; j < xbt_dynar_length(dimensions); j++) {
1027
1028           memset(&link, 0, sizeof(link));
1029           current_dimension = xbt_dynar_get_as(dimensions, j, int);
1030           neighbour_rank_id = ( ((int) i / dim_product) % current_dimension == current_dimension-1) ? i - (current_dimension-1)*dim_product : i + dim_product;
1031           link_id           = bprintf("link_from_%i_to_%i", i, neighbour_rank_id);
1032           link.id           = link_id;
1033           link.bandwidth    = cluster->bw;
1034           link.latency      = cluster->lat;
1035           link.state        = SURF_RESOURCE_ON;
1036           link.policy       = cluster->sharing_policy;
1037           sg_platf_new_link(&link);
1038           s_surf_parsing_link_up_down_t info;
1039           if (link.policy == SURF_LINK_FULLDUPLEX) {
1040             char *tmp_link = bprintf("%s_UP", link_id);
1041             info.link_up =
1042               xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
1043             free(tmp_link);
1044             tmp_link = bprintf("%s_DOWN", link_id);
1045             info.link_down =
1046               xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
1047             free(tmp_link);
1048           } else {
1049             info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
1050             info.link_down = info.link_up;
1051           }
1052           /**
1053            * Add the link to its appropriate position;
1054            * note that position rankId*(xbt_dynar_length(dimensions)+has_loopack?+has_limiter?)
1055            * holds the link "rankId->rankId"
1056            */
1057           xbt_dynar_set(current_routing->p_linkUpDownList, rankId*nb_links_per_node
1058               + ((AsClusterPtr)current_routing)->p_has_loopback
1059               + ((AsClusterPtr)current_routing)->p_has_limiter
1060               + j,
1061               &info);
1062           dim_product   *= current_dimension;
1063           xbt_free(link_id);
1064
1065         }
1066       }
1067       xbt_free(link_id);
1068       xbt_free(host_id);
1069       rankId++;
1070     }
1071
1072     xbt_dynar_free(&radical_ends);
1073   }
1074   xbt_dynar_free(&radical_elements);
1075
1076   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
1077   // and it's very useful to connect clusters together
1078   XBT_DEBUG(" ");
1079   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
1080   char *newid = NULL;
1081   s_sg_platf_router_cbarg_t router;
1082   memset(&router, 0, sizeof(router));
1083   router.id = cluster->router_id;
1084   router.coord = "";
1085   if (!router.id || !strcmp(router.id, ""))
1086     router.id = newid =
1087         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
1088                 cluster->suffix);
1089   sg_platf_new_router(&router);
1090   ((AsClusterPtr)current_routing)->p_router = (RoutingEdgePtr) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
1091   free(newid);
1092
1093   //Make the backbone
1094   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
1095     char *link_backbone = bprintf("%s_backbone", cluster->id);
1096     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
1097               cluster->bb_bw, cluster->bb_lat);
1098
1099     memset(&link, 0, sizeof(link));
1100     link.id = link_backbone;
1101     link.bandwidth = cluster->bb_bw;
1102     link.latency = cluster->bb_lat;
1103     link.state = SURF_RESOURCE_ON;
1104     link.policy = cluster->bb_sharing_policy;
1105
1106     sg_platf_new_link(&link);
1107
1108     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
1109
1110     free(link_backbone);
1111   }
1112
1113   XBT_DEBUG("</AS>");
1114   sg_platf_new_AS_end();
1115   XBT_DEBUG(" ");
1116   xbt_dict_free(&patterns); // no op if it were never set
1117 }
1118
1119 static void routing_parse_postparse(void) {
1120   xbt_dict_free(&random_value);
1121 }
1122
1123 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1124 {
1125   char *host_id = NULL;
1126   char *link_id = NULL;
1127   char *router_id = NULL;
1128
1129   XBT_DEBUG(" ");
1130   host_id = HOST_PEER(peer->id);
1131   link_id = LINK_PEER(peer->id);
1132   router_id = ROUTER_PEER(peer->id);
1133
1134   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
1135   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
1136   AS.id = peer->id;
1137   AS.routing = A_surfxml_AS_routing_Cluster;
1138   sg_platf_new_AS_begin(&AS);
1139
1140   current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
1141
1142   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1143   s_sg_platf_host_cbarg_t host;
1144   memset(&host, 0, sizeof(host));
1145   host.initial_state = SURF_RESOURCE_ON;
1146   host.id = host_id;
1147
1148   xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
1149   xbt_dynar_push(power_state_list,&peer->power);
1150   host.power_peak = power_state_list;
1151   host.pstate = 0;
1152   //host.power_peak = peer->power;
1153   host.power_scale = 1.0;
1154   host.power_trace = peer->availability_trace;
1155   host.state_trace = peer->state_trace;
1156   host.core_amount = 1;
1157   sg_platf_new_host(&host);
1158
1159   s_sg_platf_link_cbarg_t link;
1160   memset(&link, 0, sizeof(link));
1161   link.state = SURF_RESOURCE_ON;
1162   link.policy = SURF_LINK_SHARED;
1163   link.latency = peer->lat;
1164
1165   char* link_up = bprintf("%s_UP",link_id);
1166   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1167             peer->bw_out, peer->lat);
1168   link.id = link_up;
1169   link.bandwidth = peer->bw_out;
1170   sg_platf_new_link(&link);
1171
1172   char* link_down = bprintf("%s_DOWN",link_id);
1173   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1174             peer->bw_in, peer->lat);
1175   link.id = link_down;
1176   link.bandwidth = peer->bw_in;
1177   sg_platf_new_link(&link);
1178
1179   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1180   s_sg_platf_host_link_cbarg_t host_link;
1181   memset(&host_link, 0, sizeof(host_link));
1182   host_link.id = host_id;
1183   host_link.link_up = link_up;
1184   host_link.link_down= link_down;
1185   sg_platf_new_host_link(&host_link);
1186
1187   XBT_DEBUG("<router id=\"%s\"/>", router_id);
1188   s_sg_platf_router_cbarg_t router;
1189   memset(&router, 0, sizeof(router));
1190   router.id = router_id;
1191   router.coord = peer->coord;
1192   sg_platf_new_router(&router);
1193   static_cast<AsClusterPtr>(current_routing)->p_router = static_cast<RoutingEdgePtr>(xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL));
1194
1195   XBT_DEBUG("</AS>");
1196   sg_platf_new_AS_end();
1197   XBT_DEBUG(" ");
1198
1199   //xbt_dynar_free(&tab_elements_num);
1200   free(router_id);
1201   free(host_id);
1202   free(link_id);
1203   free(link_up);
1204   free(link_down);
1205 }
1206
1207 // static void routing_parse_Srandom(void)
1208 // {
1209 //   double mean, std, min, max, seed;
1210 //   char *random_id = A_surfxml_random_id;
1211 //   char *random_radical = A_surfxml_random_radical;
1212 //   char *rd_name = NULL;
1213 //   char *rd_value;
1214 //   mean = surf_parse_get_double(A_surfxml_random_mean);
1215 //   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1216 //   min = surf_parse_get_double(A_surfxml_random_min);
1217 //   max = surf_parse_get_double(A_surfxml_random_max);
1218 //   seed = surf_parse_get_double(A_surfxml_random_seed);
1219
1220 //   double res = 0;
1221 //   int i = 0;
1222 //   random_data_t random = xbt_new0(s_random_data_t, 1);
1223 //   char *tmpbuf;
1224
1225 //   xbt_dynar_t radical_elements;
1226 //   unsigned int iter;
1227 //   char *groups;
1228 //   int start, end;
1229 //   xbt_dynar_t radical_ends;
1230
1231 //   switch (A_surfxml_random_generator) {
1232 //   case AU_surfxml_random_generator:
1233 //   case A_surfxml_random_generator_NONE:
1234 //     random->generator = NONE;
1235 //     break;
1236 //   case A_surfxml_random_generator_DRAND48:
1237 //     random->generator = DRAND48;
1238 //     break;
1239 //   case A_surfxml_random_generator_RAND:
1240 //     random->generator = RAND;
1241 //     break;
1242 //   case A_surfxml_random_generator_RNGSTREAM:
1243 //     random->generator = RNGSTREAM;
1244 //     break;
1245 //   default:
1246 //     surf_parse_error("Invalid random generator");
1247 //     break;
1248 //   }
1249 //   random->seed = seed;
1250 //   random->min = min;
1251 //   random->max = max;
1252
1253 //   /* Check user stupidities */
1254 //   if (max < min)
1255 //     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1256 //   if (mean < min)
1257 //     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1258 //   if (mean > max)
1259 //     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1260
1261 //   /* normalize the mean and standard deviation before storing */
1262 //   random->mean = (mean - min) / (max - min);
1263 //   random->std = std / (max - min);
1264
1265 //   if (random->mean * (1 - random->mean) < random->std * random->std)
1266 //     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1267 //            random->mean, random->std);
1268
1269 //   XBT_DEBUG
1270 //       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1271 //        random_id, random->min, random->max, random->mean, random->std,
1272 //        (int)random->generator, random->seed, random_radical);
1273
1274 //   if (!random_value)
1275 //     random_value = xbt_dict_new_homogeneous(free);
1276
1277 //   if (!strcmp(random_radical, "")) {
1278 //     res = random_generate(random);
1279 //     rd_value = bprintf("%f", res);
1280 //     xbt_dict_set(random_value, random_id, rd_value, NULL);
1281 //   } else {
1282 //     radical_elements = xbt_str_split(random_radical, ",");
1283 //     xbt_dynar_foreach(radical_elements, iter, groups) {
1284 //       radical_ends = xbt_str_split(groups, "-");
1285 //       switch (xbt_dynar_length(radical_ends)) {
1286 //       case 1:
1287 //         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1288 //                    "Custom Random '%s' already exists !", random_id);
1289 //         res = random_generate(random);
1290 //         tmpbuf =
1291 //             bprintf("%s%d", random_id,
1292 //                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1293 //         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1294 //         xbt_free(tmpbuf);
1295 //         break;
1296
1297 //       case 2:
1298 //         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1299 //         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1300 //         for (i = start; i <= end; i++) {
1301 //           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1302 //                      "Custom Random '%s' already exists !", bprintf("%s%d",
1303 //                                                                     random_id,
1304 //                                                                     i));
1305 //           res = random_generate(random);
1306 //           tmpbuf = bprintf("%s%d", random_id, i);
1307 //           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1308 //           xbt_free(tmpbuf);
1309 //         }
1310 //         break;
1311 //       default:
1312 //         XBT_CRITICAL("Malformed radical");
1313 //         break;
1314 //       }
1315 //       res = random_generate(random);
1316 //       rd_name = bprintf("%s_router", random_id);
1317 //       rd_value = bprintf("%f", res);
1318 //       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1319
1320 //       xbt_dynar_free(&radical_ends);
1321 //     }
1322 //     free(rd_name);
1323 //     xbt_dynar_free(&radical_elements);
1324 //   }
1325 // }
1326
1327 void routing_register_callbacks()
1328 {
1329   sg_platf_host_add_cb(parse_S_host);
1330   sg_platf_router_add_cb(parse_S_router);
1331   sg_platf_host_link_add_cb(parse_S_host_link);
1332   sg_platf_route_add_cb(parse_E_route);
1333   sg_platf_ASroute_add_cb(parse_E_ASroute);
1334   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1335   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1336
1337   sg_platf_cluster_add_cb(routing_parse_cluster);
1338   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1339
1340   sg_platf_peer_add_cb(routing_parse_peer);
1341   sg_platf_postparse_add_cb(routing_parse_postparse);
1342
1343   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1344   sg_platf_AS_end_add_cb(routing_AS_end);
1345   sg_platf_AS_begin_add_cb(routing_AS_begin);
1346
1347   sg_platf_trace_add_cb(routing_parse_trace);
1348   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1349
1350 #ifdef HAVE_TRACING
1351   instr_routing_define_callbacks();
1352 #endif
1353 }
1354
1355 /**
1356  * \brief Recursive function for finalize
1357  *
1358  * \param rc the source host name
1359  *
1360  * This fuction is call by "finalize". It allow to finalize the
1361  * AS or routing components. It delete all the structures.
1362  */
1363 static void finalize_rec(AsPtr as) {
1364   xbt_dict_cursor_t cursor = NULL;
1365   char *key;
1366   AS_t elem;
1367
1368   xbt_dict_foreach(as->p_routingSons, cursor, key, elem) {
1369     finalize_rec(elem);
1370   }
1371
1372   delete as;;
1373 }
1374
1375 /** \brief Frees all memory allocated by the routing module */
1376 void routing_exit(void) {
1377   delete routing_platf;
1378 }
1379
1380 RoutingPlatf::~RoutingPlatf()
1381 {
1382         xbt_dynar_free(&p_lastRoute);
1383         finalize_rec(p_root);
1384 }
1385
1386 AS_t surf_AS_get_routing_root() {
1387   return routing_platf->p_root;
1388 }
1389
1390 const char *surf_AS_get_name(AsPtr as) {
1391   return as->p_name;
1392 }
1393
1394 xbt_dict_t surf_AS_get_routing_sons(AsPtr as) {
1395   return as->p_routingSons;
1396 }
1397
1398 const char *surf_AS_get_model(AsPtr as) {
1399   return as->p_modelDesc->name;
1400 }
1401
1402 xbt_dynar_t surf_AS_get_hosts(AsPtr as) {
1403   xbt_dynar_t elms = as->p_indexNetworkElm;
1404   sg_routing_edge_t relm;
1405   xbt_dictelm_t delm;
1406   int index;
1407   int count = xbt_dynar_length(elms);
1408   xbt_dynar_t res =  xbt_dynar_new(sizeof(xbt_dictelm_t), NULL);
1409   for (index = 0; index < count; index++) {
1410      relm = xbt_dynar_get_as(elms, index, RoutingEdgePtr);
1411      delm = xbt_lib_get_elm_or_null(host_lib, relm->p_name);
1412      if (delm!=NULL) {
1413        xbt_dynar_push(res, &delm);
1414      }
1415   }
1416   return res;
1417 }
1418
1419 void surf_AS_get_graph(AS_t as, xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges) {
1420   as->getGraph(graph, nodes, edges);
1421 }
1422