src/surf/surf_routing.cpp

   1 /* Copyright (c) 2009-2011, 2013-2015. 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 #include "surf_routing_cluster_torus.hpp"
  11 #include "surf_routing_cluster_fat_tree.hpp"
  12
  13 #include "simgrid/platf_interface.h"    // platform creation API internal interface
  14 #include "simgrid/sg_config.h"
  15 #include "storage_interface.hpp"
  16 #include "src/surf/platform.hpp"
  17 #include "surf/surfxml_parse_values.h"
  18
  19 /*************
  20  * Callbacks *
  21  *************/
  22
  23 namespace simgrid {
  24 namespace surf {
  25
  26 simgrid::xbt::signal<void(simgrid::surf::NetCard*)> netcardCreatedCallbacks;
  27 simgrid::xbt::signal<void(simgrid::surf::As*)> asCreatedCallbacks;
  28
  29 }
  30 }
  31
  32 /**
  33  * @ingroup SURF_build_api
  34  * @brief A library containing all known hosts
  35  */
  36 xbt_dict_t host_list;
  37
  38 int COORD_HOST_LEVEL=0;         //Coordinates level
  39
  40 int MSG_FILE_LEVEL;             //Msg file level
  41
  42 int SIMIX_STORAGE_LEVEL;        //Simix storage level
  43 int MSG_STORAGE_LEVEL;          //Msg storage level
  44
  45 xbt_lib_t as_router_lib;
  46 int ROUTING_ASR_LEVEL;          //Routing level
  47 int COORD_ASR_LEVEL;            //Coordinates level
  48 int NS3_ASR_LEVEL;              //host node for ns3
  49 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  50
  51 static xbt_dict_t random_value = NULL;
  52
  53
  54 /** @brief Retrieve a netcard from its name
  55  *
  56  * Netcards are the thing that connect host or routers to the network
  57  */
  58 simgrid::surf::NetCard *sg_netcard_by_name_or_null(const char *name)
  59 {
  60   sg_host_t h = sg_host_by_name(name);
  61   simgrid::surf::NetCard *net_elm = h==NULL?NULL: h->pimpl_netcard;
  62   if (!net_elm)
  63     net_elm = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  64   return net_elm;
  65 }
  66
  67 /* Global vars */
  68 simgrid::surf::RoutingPlatf *routing_platf = NULL;
  69
  70 /* global parse functions */
  71 extern xbt_dynar_t mount_list;
  72
  73 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  74
  75 /** The current AS in the parsing */
  76 static simgrid::surf::As *current_routing = NULL;
  77 simgrid::surf::As* routing_get_current()
  78 {
  79   return current_routing;
  80 }
  81
  82 static void routing_parse_postparse(void);
  83
  84 /* this lines are only for replace use like index in the model table */
  85 typedef enum {
  86   SURF_MODEL_FULL = 0,
  87   SURF_MODEL_FLOYD,
  88   SURF_MODEL_DIJKSTRA,
  89   SURF_MODEL_DIJKSTRACACHE,
  90   SURF_MODEL_NONE,
  91   SURF_MODEL_VIVALDI,
  92   SURF_MODEL_CLUSTER,
  93   SURF_MODEL_TORUS_CLUSTER,
  94   SURF_MODEL_FAT_TREE_CLUSTER,
  95 } e_routing_types;
  96
  97 struct s_model_type routing_models[] = {
  98   {"Full",
  99    "Full routing data (fast, large memory requirements, fully expressive)",
 100    model_full_create, model_full_end},
 101   {"Floyd",
 102    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
 103    model_floyd_create, model_floyd_end},
 104   {"Dijkstra",
 105    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
 106    model_dijkstra_create, model_dijkstra_both_end},
 107   {"DijkstraCache",
 108    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
 109    model_dijkstracache_create, model_dijkstra_both_end},
 110   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
 111    model_none_create,  NULL},
 112   {"Vivaldi", "Vivaldi routing",
 113    model_vivaldi_create, NULL},
 114   {"Cluster", "Cluster routing",
 115    model_cluster_create, NULL},
 116   {"Torus_Cluster", "Torus Cluster routing",
 117    model_torus_cluster_create, NULL},
 118   {"Fat_Tree_Cluster", "Fat Tree Cluster routing",
 119    model_fat_tree_cluster_create, NULL},
 120   {NULL, NULL, NULL, NULL}
 121 };
 122
 123 /**
 124  * \brief Add a netcard connecting an host to the network element list
 125  * FIXME: integrate into host constructor
 126  */
 127 void sg_platf_new_netcard(sg_platf_host_link_cbarg_t netcard)
 128 {
 129   simgrid::surf::NetCard *info = sg_host_by_name(netcard->id)->pimpl_netcard;
 130   xbt_assert(info, "Host '%s' not found!", netcard->id);
 131   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER] ||
 132       current_routing->p_modelDesc == &routing_models[SURF_MODEL_VIVALDI],
 133       "You have to be in model Cluster to use tag host_link!");
 134
 135   s_surf_parsing_link_up_down_t link_up_down;
 136   link_up_down.link_up = Link::byName(netcard->link_up);
 137   link_up_down.link_down = Link::byName(netcard->link_down);
 138
 139   xbt_assert(link_up_down.link_up, "Link '%s' not found!",netcard->link_up);
 140   xbt_assert(link_up_down.link_down, "Link '%s' not found!",netcard->link_down);
 141
 142   if(!current_routing->p_linkUpDownList)
 143     current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 144
 145   // If dynar is is greater than netcard id and if the host_link is already defined
 146   if((int)xbt_dynar_length(current_routing->p_linkUpDownList) > info->getId() &&
 147       xbt_dynar_get_as(current_routing->p_linkUpDownList, info->getId(), void*))
 148   surf_parse_error("Host_link for '%s' is already defined!",netcard->id);
 149
 150   XBT_DEBUG("Push Host_link for host '%s' to position %d", info->getName(), info->getId());
 151   xbt_dynar_set_as(current_routing->p_linkUpDownList, info->getId(), s_surf_parsing_link_up_down_t, link_up_down);
 152 }
 153
 154 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 155 {
 156   tmgr_trace_t tmgr_trace;
 157   if (!trace->file || strcmp(trace->file, "") != 0) {
 158     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 159   } else {
 160     xbt_assert(strcmp(trace->pc_data, ""),
 161         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 162     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 163   }
 164   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 165 }
 166
 167 /**
 168  * \brief Make a new routing component to the platform
 169  *
 170  * Add a new autonomous system to the platform. Any elements (such as host,
 171  * router or sub-AS) added after this call and before the corresponding call
 172  * to sg_platf_new_AS_close() will be added to this AS.
 173  *
 174  * Once this function was called, the configuration concerning the used
 175  * models cannot be changed anymore.
 176  *
 177  * @param AS_id name of this autonomous system. Must be unique in the platform
 178  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 179  */
 180 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 181 {
 182   XBT_DEBUG("routing_AS_begin");
 183   routing_model_description_t model = NULL;
 184
 185   xbt_assert(!xbt_lib_get_or_null
 186              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 187              "The AS \"%s\" already exists", AS->id);
 188
 189   _sg_cfg_init_status = 2; /* horrible hack: direct access to the global
 190                             * controlling the level of configuration to prevent
 191                             * any further config */
 192
 193   /* search the routing model */
 194   switch(AS->routing){
 195     case A_surfxml_AS_routing_Cluster:               model = &routing_models[SURF_MODEL_CLUSTER];break;
 196     case A_surfxml_AS_routing_Cluster___torus:       model = &routing_models[SURF_MODEL_TORUS_CLUSTER];break;
 197     case A_surfxml_AS_routing_Cluster___fat___tree:  model = &routing_models[SURF_MODEL_FAT_TREE_CLUSTER];break;
 198     case A_surfxml_AS_routing_Dijkstra:              model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 199     case A_surfxml_AS_routing_DijkstraCache:         model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 200     case A_surfxml_AS_routing_Floyd:                 model = &routing_models[SURF_MODEL_FLOYD];break;
 201     case A_surfxml_AS_routing_Full:                  model = &routing_models[SURF_MODEL_FULL];break;
 202     case A_surfxml_AS_routing_None:                  model = &routing_models[SURF_MODEL_NONE];break;
 203     case A_surfxml_AS_routing_Vivaldi:               model = &routing_models[SURF_MODEL_VIVALDI];break;
 204     default: xbt_die("Not a valid model!!!");
 205     break;
 206   }
 207
 208   /* make a new routing component */
 209   simgrid::surf::As *new_as = model->create();
 210
 211   new_as->p_modelDesc = model;
 212   new_as->p_hierarchy = SURF_ROUTING_NULL;
 213   new_as->p_name = xbt_strdup(AS->id);
 214
 215   simgrid::surf::NetCard *info =
 216     new simgrid::surf::NetCardImpl(xbt_strdup(new_as->p_name),
 217                                             -1,
 218                                             SURF_NETWORK_ELEMENT_AS,
 219                                             current_routing);
 220   if (current_routing == NULL && routing_platf->p_root == NULL) {
 221
 222     /* it is the first one */
 223     new_as->p_routingFather = NULL;
 224     routing_platf->p_root = new_as;
 225     info->setId(-1);
 226   } else if (current_routing != NULL && routing_platf->p_root != NULL) {
 227
 228     xbt_assert(!xbt_dict_get_or_null
 229                (current_routing->p_routingSons, AS->id),
 230                "The AS \"%s\" already exists", AS->id);
 231     /* it is a part of the tree */
 232     new_as->p_routingFather = current_routing;
 233     /* set the father behavior */
 234     if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 235       current_routing->p_hierarchy = SURF_ROUTING_RECURSIVE;
 236     /* add to the sons dictionary */
 237     xbt_dict_set(current_routing->p_routingSons, AS->id,
 238                  (void *) new_as, NULL);
 239     /* add to the father element list */
 240     info->setId(current_routing->parseAS(info));
 241   } else {
 242     THROWF(arg_error, 0, "All defined components must belong to a AS");
 243   }
 244
 245   xbt_lib_set(as_router_lib, info->getName(), ROUTING_ASR_LEVEL,
 246               (void *) info);
 247   XBT_DEBUG("Having set name '%s' id '%d'", new_as->p_name, info->getId());
 248
 249   /* set the new current component of the tree */
 250   current_routing = new_as;
 251   current_routing->p_netcard = info;
 252
 253   simgrid::surf::netcardCreatedCallbacks(info);
 254   simgrid::surf::asCreatedCallbacks(new_as);
 255 }
 256
 257 /**
 258  * \brief Specify that the current description of AS is finished
 259  *
 260  * Once you've declared all the content of your AS, you have to close
 261  * it with this call. Your AS is not usable until you call this function.
 262  *
 263  * @fixme: this call is not as robust as wanted: bad things WILL happen
 264  * if you call it twice for the same AS, or if you forget calling it, or
 265  * even if you add stuff to a closed AS
 266  *
 267  */
 268 void routing_AS_end()
 269 {
 270
 271   if (current_routing == NULL) {
 272     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 273   } else {
 274     if (current_routing->p_modelDesc->end)
 275       current_routing->p_modelDesc->end(current_routing);
 276     current_routing = current_routing->p_routingFather;
 277   }
 278 }
 279
 280 /* Aux Business methods */
 281
 282 /**
 283  * \brief Get the AS father and the first elements of the chain
 284  *
 285  * \param src the source host name
 286  * \param dst the destination host name
 287  *
 288  * Get the common father of the to processing units, and the first different
 289  * father in the chain
 290  */
 291 static void elements_father(sg_netcard_t src, sg_netcard_t dst,
 292                             AS_t * res_father,
 293                             AS_t * res_src,
 294                             AS_t * res_dst)
 295 {
 296   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 297 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 298   simgrid::surf::As *src_as, *dst_as;
 299   simgrid::surf::As *path_src[ELEMENTS_FATHER_MAXDEPTH];
 300   simgrid::surf::As *path_dst[ELEMENTS_FATHER_MAXDEPTH];
 301   int index_src = 0;
 302   int index_dst = 0;
 303   simgrid::surf::As *current;
 304   simgrid::surf::As *current_src;
 305   simgrid::surf::As *current_dst;
 306   simgrid::surf::As *father;
 307
 308   /* (1) find the as where the src and dst are located */
 309   sg_netcard_t src_data = src;
 310   sg_netcard_t dst_data = dst;
 311   src_as = src_data->getRcComponent();
 312   dst_as = dst_data->getRcComponent();
 313 #ifndef NDEBUG
 314   char* src_name = src_data->getName();
 315   char* dst_name = dst_data->getName();
 316 #endif
 317
 318   xbt_assert(src_as && dst_as,
 319              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 320
 321   /* (2) find the path to the root routing component */
 322   for (current = src_as; current != NULL; current = current->p_routingFather) {
 323     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 324       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 325     path_src[index_src++] = current;
 326   }
 327   for (current = dst_as; current != NULL; current = current->p_routingFather) {
 328     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 329       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 330     path_dst[index_dst++] = current;
 331   }
 332
 333   /* (3) find the common father */
 334   do {
 335     current_src = path_src[--index_src];
 336     current_dst = path_dst[--index_dst];
 337   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 338
 339   /* (4) they are not in the same routing component, make the path */
 340   if (current_src == current_dst)
 341     father = current_src;
 342   else
 343     father = path_src[index_src + 1];
 344
 345   /* (5) result generation */
 346   *res_father = father;         /* first the common father of src and dst */
 347   *res_src = current_src;       /* second the first different father of src */
 348   *res_dst = current_dst;       /* three  the first different father of dst */
 349
 350 #undef ELEMENTS_FATHER_MAXDEPTH
 351 }
 352
 353 /* Global Business methods */
 354
 355 /**
 356  * \brief Recursive function for get_route_latency
 357  *
 358  * \param src the source host name
 359  * \param dst the destination host name
 360  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 361  * \param *latency the latency, if needed
 362  *
 363  * This function is called by "get_route" and "get_latency". It allows to walk
 364  * recursively through the ASes tree.
 365  */
 366 static void _get_route_and_latency(
 367   simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst,
 368   xbt_dynar_t * links, double *latency)
 369 {
 370   s_sg_platf_route_cbarg_t route = SG_PLATF_ROUTE_INITIALIZER;
 371   memset(&route,0,sizeof(route));
 372
 373   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 374   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->getName(), dst->getName());
 375
 376   /* Find how src and dst are interconnected */
 377   simgrid::surf::As *common_father, *src_father, *dst_father;
 378   elements_father(src, dst, &common_father, &src_father, &dst_father);
 379   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 380       common_father->p_name, src_father->p_name, dst_father->p_name);
 381
 382   /* Check whether a direct bypass is defined */
 383   sg_platf_route_cbarg_t e_route_bypass = NULL;
 384   //FIXME:REMOVE:if (common_father->get_bypass_route)
 385
 386   e_route_bypass = common_father->getBypassRoute(src, dst, latency);
 387
 388   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 389   if (e_route_bypass) {
 390     xbt_dynar_merge(links, &e_route_bypass->link_list);
 391     generic_free_route(e_route_bypass);
 392     return;
 393   }
 394
 395   /* If src and dst are in the same AS, life is good */
 396   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 397     route.link_list = *links;
 398     common_father->getRouteAndLatency(src, dst, &route, latency);
 399     // if vivaldi latency+=vivaldi(src,dst)
 400     return;
 401   }
 402
 403   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 404
 405   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 406   // Find the net_card corresponding to father
 407   simgrid::surf::NetCard *src_father_netcard = src_father->p_netcard;
 408   simgrid::surf::NetCard *dst_father_netcard = dst_father->p_netcard;
 409
 410   common_father->getRouteAndLatency(src_father_netcard, dst_father_netcard,
 411                                     &route, latency);
 412
 413   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 414       "bad gateways for route from \"%s\" to \"%s\"", src->getName(), dst->getName());
 415
 416   sg_netcard_t src_gateway_net_elm = route.gw_src;
 417   sg_netcard_t dst_gateway_net_elm = route.gw_dst;
 418
 419   /* If source gateway is not our source, we have to recursively find our way up to this point */
 420   if (src != src_gateway_net_elm)
 421     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 422   xbt_dynar_merge(links, &route.link_list);
 423
 424   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 425   if (dst_gateway_net_elm != dst)
 426     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 427
 428 }
 429
 430 AS_t surf_platf_get_root(routing_platf_t platf){
 431   return platf->p_root;
 432 }
 433
 434 e_surf_network_element_type_t surf_routing_edge_get_rc_type(sg_netcard_t netcard){
 435   return netcard->getRcType();
 436 }
 437
 438 namespace simgrid {
 439 namespace surf {
 440
 441 /**
 442  * \brief Find a route between hosts
 443  *
 444  * \param src the network_element_t for src host
 445  * \param dst the network_element_t for dst host
 446  * \param route where to store the list of links.
 447  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 448  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 449  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 450  * \pre route!=NULL
 451  *
 452  * walk through the routing components tree and find a route between hosts
 453  * by calling each "get_route" function in each routing component.
 454  */
 455 void RoutingPlatf::getRouteAndLatency(NetCard *src, NetCard *dst, xbt_dynar_t* route, double *latency)
 456 {
 457   XBT_DEBUG("getRouteAndLatency from %s to %s", src->getName(), dst->getName());
 458   if (NULL == *route) {
 459     xbt_dynar_reset(routing_platf->p_lastRoute);
 460     *route = routing_platf->p_lastRoute;
 461   }
 462
 463   _get_route_and_latency(src, dst, route, latency);
 464
 465   xbt_assert(!latency || *latency >= 0.0,
 466              "negative latency on route between \"%s\" and \"%s\"", src->getName(), dst->getName());
 467 }
 468
 469 xbt_dynar_t RoutingPlatf::getOneLinkRoutes(){
 470   return recursiveGetOneLinkRoutes(p_root);
 471 }
 472
 473 xbt_dynar_t RoutingPlatf::recursiveGetOneLinkRoutes(As *rc)
 474 {
 475   xbt_dynar_t ret = xbt_dynar_new(sizeof(Onelink*), xbt_free_f);
 476
 477   //adding my one link routes
 478   xbt_dynar_t onelink_mine = rc->getOneLinkRoutes();
 479   if (onelink_mine)
 480     xbt_dynar_merge(&ret,&onelink_mine);
 481
 482   //recursing
 483   char *key;
 484   xbt_dict_cursor_t cursor = NULL;
 485   AS_t rc_child;
 486   xbt_dict_foreach(rc->p_routingSons, cursor, key, rc_child) {
 487     xbt_dynar_t onelink_child = recursiveGetOneLinkRoutes(rc_child);
 488     if (onelink_child)
 489       xbt_dynar_merge(&ret,&onelink_child);
 490   }
 491   return ret;
 492 }
 493
 494 }
 495 }
 496
 497 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 498 {
 499   simgrid::surf::NetCard *rc = sg_netcard_by_name_or_null(name);
 500   if (rc)
 501     return rc->getRcType();
 502
 503   return SURF_NETWORK_ELEMENT_NULL;
 504 }
 505
 506 /**
 507  * \brief Generic method: create the global routing schema
 508  *
 509  * Make a global routing structure and set all the parsing functions.
 510  */
 511 void routing_model_create( void *loopback)
 512 {
 513   /* config the uniq global routing */
 514   routing_platf = new simgrid::surf::RoutingPlatf();
 515   routing_platf->p_root = NULL;
 516   routing_platf->p_loopback = loopback;
 517   routing_platf->p_lastRoute = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 518   /* no current routing at moment */
 519   current_routing = NULL;
 520 }
 521
 522
 523 /* ************************************************** */
 524 /* ********** PATERN FOR NEW ROUTING **************** */
 525
 526 /* The minimal configuration of a new routing model need the next functions,
 527  * also you need to set at the start of the file, the new model in the model
 528  * list. Remember keep the null ending of the list.
 529  */
 530 /*** Routing model structure ***/
 531 // typedef struct {
 532 //   s_routing_component_t generic_routing;
 533 //   /* things that your routing model need */
 534 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 535
 536 /*** Parse routing model functions ***/
 537 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 538 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 539 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 540 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 541 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 542
 543 /*** Business methods ***/
 544 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 545 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 546 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 547
 548 /*** Creation routing model functions ***/
 549 // static void* model_NEW_create(void) {
 550 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 551 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 552 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 553 //   new_component->generic_routing.set_route = model_NEW_set_route;
 554 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 555 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 556 //   new_component->generic_routing.get_route = NEW_get_route;
 557 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 558 //   new_component->generic_routing.finalize = NEW_finalize;
 559 //   /* initialization of internal structures */
 560 //   return new_component;
 561 // } /* mandatory */
 562 // static void  model_NEW_load(void) {}   /* mandatory */
 563 // static void  model_NEW_unload(void) {} /* mandatory */
 564 // static void  model_NEW_end(void) {}    /* mandatory */
 565
 566 /* ************************************************************************** */
 567 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 568
 569 void routing_cluster_add_backbone(void* bb) {
 570   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER],
 571         "You have to be in model Cluster to use tag backbone!");
 572   xbt_assert(!static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone, "The backbone link is already defined!");
 573   static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone =
 574     static_cast<simgrid::surf::Link*>(bb);
 575   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->p_name);
 576 }
 577
 578 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 579 {
 580   int start, end, i;
 581   char *groups , *host_id , *link_id = NULL;
 582   unsigned int iter;
 583   xbt_dynar_t radical_elements;
 584   xbt_dynar_t radical_ends;
 585
 586   //Make all hosts
 587   radical_elements = xbt_str_split(cabinet->radical, ",");
 588   xbt_dynar_foreach(radical_elements, iter, groups) {
 589
 590     radical_ends = xbt_str_split(groups, "-");
 591     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 592
 593     switch (xbt_dynar_length(radical_ends)) {
 594     case 1:
 595       end = start;
 596       break;
 597     case 2:
 598       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 599       break;
 600     default:
 601       surf_parse_error("Malformed radical");
 602       break;
 603     }
 604     s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 605     memset(&host, 0, sizeof(host));
 606     host.initiallyOn   = 1;
 607     host.pstate        = 0;
 608     host.speed_scale   = 1.0;
 609     host.core_amount   = 1;
 610
 611     s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 612     memset(&link, 0, sizeof(link));
 613     link.initiallyOn = 1;
 614     link.policy    = SURF_LINK_FULLDUPLEX;
 615     link.latency   = cabinet->lat;
 616     link.bandwidth = cabinet->bw;
 617
 618     s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
 619     memset(&host_link, 0, sizeof(host_link));
 620
 621     for (i = start; i <= end; i++) {
 622       host_id                      = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 623       link_id                      = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 624       host.id                      = host_id;
 625       link.id                      = link_id;
 626       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 627       xbt_dynar_push(host.speed_peak,&cabinet->speed);
 628       sg_platf_new_host(&host);
 629       xbt_dynar_free(&host.speed_peak);
 630       sg_platf_new_link(&link);
 631
 632       char* link_up       = bprintf("%s_UP",link_id);
 633       char* link_down     = bprintf("%s_DOWN",link_id);
 634       host_link.id        = host_id;
 635       host_link.link_up   = link_up;
 636       host_link.link_down = link_down;
 637       sg_platf_new_netcard(&host_link);
 638
 639       free(host_id);
 640       free(link_id);
 641       free(link_up);
 642       free(link_down);
 643     }
 644
 645     xbt_dynar_free(&radical_ends);
 646   }
 647   xbt_dynar_free(&radical_elements);
 648 }
 649
 650 void routing_new_cluster(sg_platf_cluster_cbarg_t cluster)
 651 {
 652   using simgrid::surf::AsCluster;
 653   using simgrid::surf::AsClusterTorus;
 654   using simgrid::surf::AsClusterFatTree;
 655
 656   char *host_id, *groups, *link_id = NULL;
 657   xbt_dict_t patterns = NULL;
 658   int rankId=0;
 659
 660   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 661   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 662
 663   unsigned int iter;
 664   int start, end, i;
 665   xbt_dynar_t radical_elements;
 666   xbt_dynar_t radical_ends;
 667
 668   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 669       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 670     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 671     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 672     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 673     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 674   }
 675
 676   /* parse the topology attribute. If we are not in a flat cluster,
 677    * switch to the right mode and initialize the routing with
 678    * the parameters in topo_parameters attribute
 679    */
 680   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 681   AS.id = cluster->id;
 682
 683   if(cluster->topology == SURF_CLUSTER_TORUS){
 684     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Torus_Cluster\">", cluster->id);
 685     AS.routing = A_surfxml_AS_routing_Cluster___torus;
 686     sg_platf_new_AS_begin(&AS);
 687     ((AsClusterTorus*)current_routing)->parse_specific_arguments(cluster);
 688   }
 689   else if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 690     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Fat_Tree_Cluster\">", cluster->id);
 691     AS.routing = A_surfxml_AS_routing_Cluster___fat___tree;
 692     sg_platf_new_AS_begin(&AS);
 693     ((AsClusterFatTree*)current_routing)->parse_specific_arguments(cluster);
 694   }
 695
 696   else{
 697     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 698     AS.routing = A_surfxml_AS_routing_Cluster;
 699     sg_platf_new_AS_begin(&AS);
 700   }
 701
 702   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 703       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 704       ((AsCluster*)current_routing)->p_has_loopback=1;
 705   }
 706
 707   if(cluster->limiter_link!=0){
 708       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 709       ((AsCluster*)current_routing)->p_has_limiter=1;
 710   }
 711
 712
 713
 714   current_routing->p_linkUpDownList
 715             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 716
 717   //Make all hosts
 718   radical_elements = xbt_str_split(cluster->radical, ",");
 719   xbt_dynar_foreach(radical_elements, iter, groups) {
 720
 721     radical_ends = xbt_str_split(groups, "-");
 722     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 723
 724     switch (xbt_dynar_length(radical_ends)) {
 725     case 1:
 726       end = start;
 727       break;
 728     case 2:
 729       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 730       break;
 731     default:
 732       surf_parse_error("Malformed radical");
 733       break;
 734     }
 735     for (i = start; i <= end; i++) {
 736       host_id =
 737           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 738       link_id = bprintf("%s_link_%d", cluster->id, i);
 739
 740       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 741
 742       memset(&host, 0, sizeof(host));
 743       host.id = host_id;
 744       if ((cluster->properties != NULL) && (!xbt_dict_is_empty(cluster->properties))) {
 745         xbt_dict_cursor_t cursor=NULL;
 746         char *key,*data;
 747         host.properties = xbt_dict_new();
 748
 749         xbt_dict_foreach(cluster->properties,cursor,key,data) {
 750           xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 751         }
 752       }
 753       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 754         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 755         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 756         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 757         host.speed_trace = tmgr_trace_new_from_file(avail_file);
 758         xbt_free(avail_file);
 759       } else {
 760         XBT_DEBUG("\tavailability_file=\"\"");
 761       }
 762
 763       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 764         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 765         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 766         host.state_trace = tmgr_trace_new_from_file(avail_file);
 767         xbt_free(avail_file);
 768       } else {
 769         XBT_DEBUG("\tstate_file=\"\"");
 770       }
 771
 772       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 773       xbt_dynar_push(host.speed_peak,&cluster->speed);
 774       host.pstate = 0;
 775
 776       //host.power_peak = cluster->power;
 777       host.speed_scale = 1.0;
 778       host.core_amount = cluster->core_amount;
 779       host.initiallyOn = 1;
 780       host.coord = "";
 781       sg_platf_new_host(&host);
 782       xbt_dynar_free(&host.speed_peak);
 783       XBT_DEBUG("</host>");
 784
 785       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 786                 cluster->bw, cluster->lat);
 787
 788
 789       s_surf_parsing_link_up_down_t info_lim, info_loop;
 790       // All links are saved in a matrix;
 791       // every row describes a single node; every node
 792       // may have multiple links.
 793       // the first column may store a link from x to x if p_has_loopback is set
 794       // the second column may store a limiter link if p_has_limiter is set
 795       // other columns are to store one or more link for the node
 796
 797       //add a loopback link
 798       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 799         char *tmp_link = bprintf("%s_loopback", link_id);
 800         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 801                 cluster->limiter_link);
 802
 803
 804         memset(&link, 0, sizeof(link));
 805         link.id        = tmp_link;
 806         link.bandwidth = cluster->loopback_bw;
 807         link.latency   = cluster->loopback_lat;
 808         link.initiallyOn = 1;
 809         link.policy    = SURF_LINK_FATPIPE;
 810         sg_platf_new_link(&link);
 811         info_loop.link_up   = Link::byName(tmp_link);
 812         info_loop.link_down = info_loop.link_up;
 813         free(tmp_link);
 814         xbt_dynar_set(current_routing->p_linkUpDownList,
 815           rankId*(static_cast<AsCluster*>(current_routing))->p_nb_links_per_node, &info_loop);
 816       }
 817
 818       //add a limiter link (shared link to account for maximal bandwidth of the node)
 819       if(cluster->limiter_link!=0){
 820         char *tmp_link = bprintf("%s_limiter", link_id);
 821         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 822                 cluster->limiter_link);
 823
 824
 825         memset(&link, 0, sizeof(link));
 826         link.id = tmp_link;
 827         link.bandwidth = cluster->limiter_link;
 828         link.latency = 0;
 829         link.initiallyOn = 1;
 830         link.policy = SURF_LINK_SHARED;
 831         sg_platf_new_link(&link);
 832         info_lim.link_up = Link::byName(tmp_link);
 833         info_lim.link_down = info_lim.link_up;
 834         free(tmp_link);
 835         auto as_cluster = static_cast<AsCluster*>(current_routing);
 836         xbt_dynar_set(current_routing->p_linkUpDownList,
 837             rankId*(as_cluster)->p_nb_links_per_node + as_cluster->p_has_loopback ,
 838             &info_lim);
 839
 840       }
 841
 842
 843       //call the cluster function that adds the others links
 844       if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 845         ((AsClusterFatTree*) current_routing)->addProcessingNode(i);
 846       }
 847       else {
 848       static_cast<AsCluster*>(current_routing)->create_links_for_node(cluster, i, rankId, rankId*
 849           static_cast<AsCluster*>(current_routing)->p_nb_links_per_node
 850           + static_cast<AsCluster*>(current_routing)->p_has_loopback
 851           + static_cast<AsCluster*>(current_routing)->p_has_limiter );
 852       }
 853       xbt_free(link_id);
 854       xbt_free(host_id);
 855       rankId++;
 856     }
 857
 858     xbt_dynar_free(&radical_ends);
 859   }
 860   xbt_dynar_free(&radical_elements);
 861
 862   // For fat trees, the links must be created once all nodes have been added
 863   if(cluster->topology == SURF_CLUSTER_FAT_TREE) {
 864     static_cast<simgrid::surf::AsClusterFatTree*>(current_routing)->create_links();
 865   }
 866   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 867   // and it's very useful to connect clusters together
 868   XBT_DEBUG(" ");
 869   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 870   char *newid = NULL;
 871   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
 872   memset(&router, 0, sizeof(router));
 873   router.id = cluster->router_id;
 874   router.coord = "";
 875   if (!router.id || !strcmp(router.id, ""))
 876     router.id = newid =
 877         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 878                 cluster->suffix);
 879   sg_platf_new_router(&router);
 880   ((AsCluster*)current_routing)->p_router = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 881   free(newid);
 882
 883   //Make the backbone
 884   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 885     char *link_backbone = bprintf("%s_backbone", cluster->id);
 886     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 887               cluster->bb_bw, cluster->bb_lat);
 888
 889     memset(&link, 0, sizeof(link));
 890     link.id        = link_backbone;
 891     link.bandwidth = cluster->bb_bw;
 892     link.latency   = cluster->bb_lat;
 893     link.initiallyOn = 1;
 894     link.policy    = cluster->bb_sharing_policy;
 895
 896     sg_platf_new_link(&link);
 897
 898     routing_cluster_add_backbone(Link::byName(link_backbone));
 899
 900     free(link_backbone);
 901   }
 902
 903   XBT_DEBUG("</AS>");
 904   sg_platf_new_AS_end();
 905   XBT_DEBUG(" ");
 906   xbt_dict_free(&patterns); // no op if it were never set
 907 }
 908
 909 static void routing_parse_postparse(void) {
 910   xbt_dict_free(&random_value);
 911 }
 912
 913 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
 914 {
 915   using simgrid::surf::NetCard;
 916   using simgrid::surf::AsCluster;
 917
 918   char *host_id = NULL;
 919   char *link_id = NULL;
 920   char *router_id = NULL;
 921
 922   XBT_DEBUG(" ");
 923   host_id = HOST_PEER(peer->id);
 924   link_id = LINK_PEER(peer->id);
 925   router_id = ROUTER_PEER(peer->id);
 926
 927   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
 928   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 929   AS.id                    = peer->id;
 930   AS.routing               = A_surfxml_AS_routing_Cluster;
 931   sg_platf_new_AS_begin(&AS);
 932
 933   current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 934
 935   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
 936   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 937   memset(&host, 0, sizeof(host));
 938   host.initiallyOn = 1;
 939   host.id = host_id;
 940
 941   host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 942   xbt_dynar_push(host.speed_peak,&peer->speed);
 943   host.pstate = 0;
 944   //host.power_peak = peer->power;
 945   host.speed_scale = 1.0;
 946   host.speed_trace = peer->availability_trace;
 947   host.state_trace = peer->state_trace;
 948   host.core_amount = 1;
 949   sg_platf_new_host(&host);
 950   xbt_dynar_free(&host.speed_peak);
 951
 952   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 953   memset(&link, 0, sizeof(link));
 954   link.initiallyOn = 1;
 955   link.policy  = SURF_LINK_SHARED;
 956   link.latency = peer->lat;
 957
 958   char* link_up = bprintf("%s_UP",link_id);
 959   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
 960             peer->bw_out, peer->lat);
 961   link.id = link_up;
 962   link.bandwidth = peer->bw_out;
 963   sg_platf_new_link(&link);
 964
 965   char* link_down = bprintf("%s_DOWN",link_id);
 966   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
 967             peer->bw_in, peer->lat);
 968   link.id = link_down;
 969   link.bandwidth = peer->bw_in;
 970   sg_platf_new_link(&link);
 971
 972   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
 973   s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
 974   memset(&host_link, 0, sizeof(host_link));
 975   host_link.id        = host_id;
 976   host_link.link_up   = link_up;
 977   host_link.link_down = link_down;
 978   sg_platf_new_netcard(&host_link);
 979
 980   XBT_DEBUG("<router id=\"%s\"/>", router_id);
 981   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
 982   memset(&router, 0, sizeof(router));
 983   router.id = router_id;
 984   router.coord = peer->coord;
 985   sg_platf_new_router(&router);
 986   static_cast<AsCluster*>(current_routing)->p_router = static_cast<NetCard*>(xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL));
 987
 988   XBT_DEBUG("</AS>");
 989   sg_platf_new_AS_end();
 990   XBT_DEBUG(" ");
 991
 992   //xbt_dynar_free(&tab_elements_num);
 993   free(router_id);
 994   free(host_id);
 995   free(link_id);
 996   free(link_up);
 997   free(link_down);
 998 }
 999
1000 // static void routing_parse_Srandom(void)
1001 // {
1002 //   double mean, std, min, max, seed;
1003 //   char *random_id = A_surfxml_random_id;
1004 //   char *random_radical = A_surfxml_random_radical;
1005 //   char *rd_name = NULL;
1006 //   char *rd_value;
1007 //   mean = surf_parse_get_double(A_surfxml_random_mean);
1008 //   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1009 //   min = surf_parse_get_double(A_surfxml_random_min);
1010 //   max = surf_parse_get_double(A_surfxml_random_max);
1011 //   seed = surf_parse_get_double(A_surfxml_random_seed);
1012
1013 //   double res = 0;
1014 //   int i = 0;
1015 //   random_data_t random = xbt_new0(s_random_data_t, 1);
1016 //   char *tmpbuf;
1017
1018 //   xbt_dynar_t radical_elements;
1019 //   unsigned int iter;
1020 //   char *groups;
1021 //   int start, end;
1022 //   xbt_dynar_t radical_ends;
1023
1024 //   switch (A_surfxml_random_generator) {
1025 //   case AU_surfxml_random_generator:
1026 //   case A_surfxml_random_generator_NONE:
1027 //     random->generator = NONE;
1028 //     break;
1029 //   case A_surfxml_random_generator_DRAND48:
1030 //     random->generator = DRAND48;
1031 //     break;
1032 //   case A_surfxml_random_generator_RAND:
1033 //     random->generator = RAND;
1034 //     break;
1035 //   case A_surfxml_random_generator_RNGSTREAM:
1036 //     random->generator = RNGSTREAM;
1037 //     break;
1038 //   default:
1039 //     surf_parse_error("Invalid random generator");
1040 //     break;
1041 //   }
1042 //   random->seed = seed;
1043 //   random->min = min;
1044 //   random->max = max;
1045
1046 //   /* Check user stupidities */
1047 //   if (max < min)
1048 //     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1049 //   if (mean < min)
1050 //     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1051 //   if (mean > max)
1052 //     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1053
1054 //   /* normalize the mean and standard deviation before storing */
1055 //   random->mean = (mean - min) / (max - min);
1056 //   random->std = std / (max - min);
1057
1058 //   if (random->mean * (1 - random->mean) < random->std * random->std)
1059 //     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1060 //            random->mean, random->std);
1061
1062 //   XBT_DEBUG
1063 //       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1064 //        random_id, random->min, random->max, random->mean, random->std,
1065 //        (int)random->generator, random->seed, random_radical);
1066
1067 //   if (!random_value)
1068 //     random_value = xbt_dict_new_homogeneous(free);
1069
1070 //   if (!strcmp(random_radical, "")) {
1071 //     res = random_generate(random);
1072 //     rd_value = bprintf("%f", res);
1073 //     xbt_dict_set(random_value, random_id, rd_value, NULL);
1074 //   } else {
1075 //     radical_elements = xbt_str_split(random_radical, ",");
1076 //     xbt_dynar_foreach(radical_elements, iter, groups) {
1077 //       radical_ends = xbt_str_split(groups, "-");
1078 //       switch (xbt_dynar_length(radical_ends)) {
1079 //       case 1:
1080 //         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1081 //                    "Custom Random '%s' already exists !", random_id);
1082 //         res = random_generate(random);
1083 //         tmpbuf =
1084 //             bprintf("%s%d", random_id,
1085 //                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1086 //         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1087 //         xbt_free(tmpbuf);
1088 //         break;
1089
1090 //       case 2:
1091 //         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1092 //         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1093 //         for (i = start; i <= end; i++) {
1094 //           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1095 //                      "Custom Random '%s' already exists !", bprintf("%s%d",
1096 //                                                                     random_id,
1097 //                                                                     i));
1098 //           res = random_generate(random);
1099 //           tmpbuf = bprintf("%s%d", random_id, i);
1100 //           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1101 //           xbt_free(tmpbuf);
1102 //         }
1103 //         break;
1104 //       default:
1105 //         XBT_CRITICAL("Malformed radical");
1106 //         break;
1107 //       }
1108 //       res = random_generate(random);
1109 //       rd_name = bprintf("%s_router", random_id);
1110 //       rd_value = bprintf("%f", res);
1111 //       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1112
1113 //       xbt_dynar_free(&radical_ends);
1114 //     }
1115 //     free(rd_name);
1116 //     xbt_dynar_free(&radical_elements);
1117 //   }
1118 // }
1119
1120 static void check_disk_attachment()
1121 {
1122   xbt_lib_cursor_t cursor;
1123   char *key;
1124   void **data;
1125   simgrid::surf::NetCard *host_elm;
1126   xbt_lib_foreach(storage_lib, cursor, key, data) {
1127     if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
1128     simgrid::surf::Storage *storage = static_cast<simgrid::surf::Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
1129     host_elm = sg_netcard_by_name_or_null(storage->p_attach);
1130     if(!host_elm)
1131       surf_parse_error("Unable to attach storage %s: host %s doesn't exist.", storage->getName(), storage->p_attach);
1132     }
1133   }
1134 }
1135
1136 void routing_register_callbacks()
1137 {
1138   simgrid::surf::on_postparse.connect(routing_parse_postparse);
1139   simgrid::surf::on_postparse.connect(check_disk_attachment);
1140
1141   instr_routing_define_callbacks();
1142 }
1143
1144 /**
1145  * \brief Recursive function for finalize
1146  *
1147  * \param rc the source host name
1148  *
1149  * This fuction is call by "finalize". It allow to finalize the
1150  * AS or routing components. It delete all the structures.
1151  */
1152 static void finalize_rec(simgrid::surf::As *as) {
1153   xbt_dict_cursor_t cursor = NULL;
1154   char *key;
1155   AS_t elem;
1156
1157   xbt_dict_foreach(as->p_routingSons, cursor, key, elem) {
1158     finalize_rec(elem);
1159   }
1160
1161   delete as;;
1162 }
1163
1164 /** \brief Frees all memory allocated by the routing module */
1165 void routing_exit(void) {
1166   delete routing_platf;
1167 }
1168
1169 namespace simgrid {
1170 namespace surf {
1171
1172 RoutingPlatf::~RoutingPlatf()
1173 {
1174   xbt_dynar_free(&p_lastRoute);
1175   finalize_rec(p_root);
1176 }
1177
1178 }
1179 }
1180
1181 AS_t surf_AS_get_routing_root() {
1182   return routing_platf->p_root;
1183 }
1184
1185 const char *surf_AS_get_name(simgrid::surf::As *as) {
1186   return as->p_name;
1187 }
1188
1189 static simgrid::surf::As *surf_AS_recursive_get_by_name(
1190   simgrid::surf::As *current, const char * name)
1191 {
1192   xbt_dict_cursor_t cursor = NULL;
1193   char *key;
1194   AS_t elem;
1195   simgrid::surf::As *tmp = NULL;
1196
1197   if(!strcmp(current->p_name, name))
1198     return current;
1199
1200   xbt_dict_foreach(current->p_routingSons, cursor, key, elem) {
1201     tmp = surf_AS_recursive_get_by_name(elem, name);
1202     if(tmp != NULL ) {
1203         break;
1204     }
1205   }
1206   return tmp;
1207 }
1208
1209 simgrid::surf::As *surf_AS_get_by_name(const char * name)
1210 {
1211   simgrid::surf::As *as = surf_AS_recursive_get_by_name(routing_platf->p_root, name);
1212   if(as == NULL)
1213     XBT_WARN("Impossible to find an AS with name %s, please check your input", name);
1214   return as;
1215 }
1216
1217 xbt_dict_t surf_AS_get_routing_sons(simgrid::surf::As *as)
1218 {
1219   return as->p_routingSons;
1220 }
1221
1222 const char *surf_AS_get_model(simgrid::surf::As *as)
1223 {
1224   return as->p_modelDesc->name;
1225 }
1226
1227 xbt_dynar_t surf_AS_get_hosts(simgrid::surf::As *as)
1228 {
1229   xbt_dynar_t elms = as->p_indexNetworkElm;
1230   int count = xbt_dynar_length(elms);
1231   xbt_dynar_t res =  xbt_dynar_new(sizeof(sg_host_t), NULL);
1232   for (int index = 0; index < count; index++) {
1233      sg_netcard_t relm =
1234       xbt_dynar_get_as(elms, index, simgrid::surf::NetCard*);
1235      sg_host_t delm = simgrid::s4u::Host::by_name_or_null(relm->getName());
1236      if (delm!=NULL) {
1237        xbt_dynar_push(res, &delm);
1238      }
1239   }
1240   return res;
1241 }
1242
1243 void surf_AS_get_graph(AS_t as, xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges) {
1244   as->getGraph(graph, nodes, edges);
1245 }