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