src/surf/surf_routing.c

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