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   XBT_DEBUG("routing_AS_begin");
 366   AS_t new_as;
 367   routing_model_description_t model = NULL;
 368
 369   xbt_assert(!xbt_lib_get_or_null
 370              (as_router_lib, AS_id, ROUTING_ASR_LEVEL),
 371              "The AS \"%s\" already exists", AS_id);
 372
 373   /* search the routing model */
 374   switch(wanted_routing_type){
 375     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 376     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 377     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 378     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 379     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 380     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 381     case A_surfxml_AS_routing_RuleBased:     model = &routing_models[SURF_MODEL_RULEBASED];break;
 382     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 383     default: xbt_die("Not a valid model!!!");
 384     break;
 385   }
 386
 387   /* make a new routing component */
 388   new_as = (AS_t) model->create();
 389   new_as->model_desc = model;
 390   new_as->hierarchy = SURF_ROUTING_NULL;
 391   new_as->name = xbt_strdup(AS_id);
 392
 393   sg_routing_edge_t info = NULL;
 394   info = xbt_new0(s_network_element_t, 1);
 395
 396   if (current_routing == NULL && routing_platf->root == NULL) {
 397
 398     /* it is the first one */
 399     new_as->routing_father = NULL;
 400     routing_platf->root = new_as;
 401     info->id = -1;
 402   } else if (current_routing != NULL && routing_platf->root != NULL) {
 403
 404     xbt_assert(!xbt_dict_get_or_null
 405                (current_routing->routing_sons, AS_id),
 406                "The AS \"%s\" already exists", AS_id);
 407     /* it is a part of the tree */
 408     new_as->routing_father = current_routing;
 409     /* set the father behavior */
 410     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 411       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 412     /* add to the sons dictionary */
 413     xbt_dict_set(current_routing->routing_sons, AS_id,
 414                  (void *) new_as, NULL);
 415     /* add to the father element list */
 416     info->id = current_routing->parse_AS(current_routing, (void *) info);
 417   } else {
 418     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 419   }
 420
 421   info->rc_component = new_as->routing_father;
 422   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 423   info->name = new_as->name;
 424
 425   xbt_lib_set(as_router_lib, new_as->name, ROUTING_ASR_LEVEL,
 426               (void *) info);
 427   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 428
 429   /* set the new current component of the tree */
 430   current_routing = new_as;
 431   current_routing->net_elem = info;
 432
 433 }
 434
 435 /**
 436  * \brief Specify that the current description of AS is finished
 437  *
 438  * Once you've declared all the content of your AS, you have to close
 439  * it with this call. Your AS is not usable until you call this function.
 440  *
 441  * @fixme: this call is not as robust as wanted: bad things WILL happen
 442  * if you call it twice for the same AS, or if you forget calling it, or
 443  * even if you add stuff to a closed AS
 444  *
 445  */
 446 void routing_AS_end()
 447 {
 448
 449   if (current_routing == NULL) {
 450     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 451   } else {
 452     if (current_routing->model_desc->end)
 453       current_routing->model_desc->end(current_routing);
 454     current_routing = current_routing->routing_father;
 455   }
 456 }
 457
 458 /* Aux Business methods */
 459
 460 /**
 461  * \brief Get the AS father and the first elements of the chain
 462  *
 463  * \param src the source host name
 464  * \param dst the destination host name
 465  *
 466  * Get the common father of the to processing units, and the first different
 467  * father in the chain
 468  */
 469 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 470                             AS_t * res_father,
 471                             AS_t * res_src,
 472                             AS_t * res_dst)
 473 {
 474   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 475 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 476   AS_t src_as, dst_as;
 477   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 478   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 479   int index_src = 0;
 480   int index_dst = 0;
 481   AS_t current;
 482   AS_t current_src;
 483   AS_t current_dst;
 484   AS_t father;
 485
 486   /* (1) find the as where the src and dst are located */
 487   sg_routing_edge_t src_data = src;
 488   sg_routing_edge_t dst_data = dst;
 489   src_as = src_data->rc_component;
 490   dst_as = dst_data->rc_component;
 491 #ifndef NDEBUG
 492   char* src_name = src_data->name;
 493   char* dst_name = dst_data->name;
 494 #endif
 495
 496   xbt_assert(src_as && dst_as,
 497              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 498
 499   /* (2) find the path to the root routing component */
 500   for (current = src_as; current != NULL; current = current->routing_father) {
 501     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 502       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 503     path_src[index_src++] = current;
 504   }
 505   for (current = dst_as; current != NULL; current = current->routing_father) {
 506     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 507       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 508     path_dst[index_dst++] = current;
 509   }
 510
 511   /* (3) find the common father */
 512   do {
 513     current_src = path_src[--index_src];
 514     current_dst = path_dst[--index_dst];
 515   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 516
 517   /* (4) they are not in the same routing component, make the path */
 518   if (current_src == current_dst)
 519     father = current_src;
 520   else
 521     father = path_src[index_src + 1];
 522
 523   /* (5) result generation */
 524   *res_father = father;         /* first the common father of src and dst */
 525   *res_src = current_src;       /* second the first different father of src */
 526   *res_dst = current_dst;       /* three  the first different father of dst */
 527
 528 #undef ELEMENTS_FATHER_MAXDEPTH
 529 }
 530
 531 /* Global Business methods */
 532
 533 /**
 534  * \brief Recursive function for get_route_latency
 535  *
 536  * \param src the source host name
 537  * \param dst the destination host name
 538  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 539  * \param *latency the latency, if needed
 540  *
 541  * This function is called by "get_route" and "get_latency". It allows to walk
 542  * recursively through the ASes tree.
 543  */
 544 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 545                                    xbt_dynar_t * links, double *latency)
 546 {
 547   s_route_t route;
 548   memset(&route,0,sizeof(route));
 549
 550   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 551   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 552
 553   /* Find how src and dst are interconnected */
 554   AS_t common_father, src_father, dst_father;
 555   elements_father(src, dst, &common_father, &src_father, &dst_father);
 556   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 557       common_father->name,src_father->name,dst_father->name);
 558
 559   /* Check whether a direct bypass is defined */
 560   route_t e_route_bypass = NULL;
 561   if (common_father->get_bypass_route)
 562     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 563
 564   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 565   if (e_route_bypass) {
 566     xbt_dynar_merge(links, &e_route_bypass->link_list);
 567     generic_free_route(e_route_bypass);
 568     return;
 569   }
 570
 571   /* If src and dst are in the same AS, life is good */
 572   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 573     route.link_list = *links;
 574     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 575     // if vivaldi latency+=vivaldi(src,dst)
 576     return;
 577   }
 578
 579   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 580
 581   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 582   // Find the net_card corresponding to father
 583   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 584   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 585
 586   common_father->get_route_and_latency(common_father,
 587                                        src_father_net_elm, dst_father_net_elm,
 588                                        &route, latency);
 589
 590   xbt_assert((route.src_gateway != NULL) && (route.dst_gateway != NULL),
 591       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 592
 593   sg_routing_edge_t src_gateway_net_elm = route.src_gateway;
 594   sg_routing_edge_t dst_gateway_net_elm = route.dst_gateway;
 595
 596   /* If source gateway is not our source, we have to recursively find our way up to this point */
 597   if (src != src_gateway_net_elm)
 598     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 599   xbt_dynar_merge(links, &route.link_list);
 600
 601   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 602   if (dst_gateway_net_elm != dst)
 603     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 604
 605   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 606 }
 607
 608 /**
 609  * \brief Find a route between hosts
 610  *
 611  * \param src the network_element_t for src host
 612  * \param dst the network_element_t for dst host
 613  * \param route where to store the list of links.
 614  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 615  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 616  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 617  * \pre route!=NULL
 618  *
 619  * walk through the routing components tree and find a route between hosts
 620  * by calling the differents "get_route" functions in each routing component.
 621  */
 622 void routing_get_route_and_latency(sg_routing_edge_t src,
 623                                    sg_routing_edge_t dst,
 624                                    xbt_dynar_t * route, double *latency)
 625 {
 626   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 627   if (!*route) {
 628     xbt_dynar_reset(routing_platf->last_route);
 629     *route = routing_platf->last_route;
 630   }
 631
 632   _get_route_and_latency(src, dst, route, latency);
 633
 634   xbt_assert(!latency || *latency >= 0.0,
 635              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 636 }
 637
 638 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 639 {
 640   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 641
 642   //adding my one link routes
 643   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 644   if (onelink_mine)
 645     xbt_dynar_merge(&ret,&onelink_mine);
 646
 647   //recursing
 648   char *key;
 649   xbt_dict_cursor_t cursor = NULL;
 650   AS_t rc_child;
 651   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 652     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 653     if (onelink_child)
 654       xbt_dynar_merge(&ret,&onelink_child);
 655   }
 656   return ret;
 657 }
 658
 659 static xbt_dynar_t get_onelink_routes(void)
 660 {
 661   return recursive_get_onelink_routes(routing_platf->root);
 662 }
 663
 664 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 665 {
 666   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 667   if (rc)
 668     return rc->rc_type;
 669
 670   return SURF_NETWORK_ELEMENT_NULL;
 671 }
 672
 673 /**
 674  * \brief Generic method: create the global routing schema
 675  *
 676  * Make a global routing structure and set all the parsing functions.
 677  */
 678 void routing_model_create( void *loopback)
 679 {
 680   /* config the uniq global routing */
 681   routing_platf = xbt_new0(s_routing_platf_t, 1);
 682   routing_platf->root = NULL;
 683   routing_platf->get_onelink_routes = get_onelink_routes;
 684   routing_platf->loopback = loopback;
 685   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 686   /* no current routing at moment */
 687   current_routing = NULL;
 688 }
 689
 690
 691 /* ************************************************** */
 692 /* ********** PATERN FOR NEW ROUTING **************** */
 693
 694 /* The minimal configuration of a new routing model need the next functions,
 695  * also you need to set at the start of the file, the new model in the model
 696  * list. Remember keep the null ending of the list.
 697  */
 698 /*** Routing model structure ***/
 699 // typedef struct {
 700 //   s_routing_component_t generic_routing;
 701 //   /* things that your routing model need */
 702 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 703
 704 /*** Parse routing model functions ***/
 705 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 706 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 707 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 708 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 709 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 710
 711 /*** Business methods ***/
 712 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 713 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 714 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 715
 716 /*** Creation routing model functions ***/
 717 // static void* model_NEW_create(void) {
 718 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 719 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 720 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 721 //   new_component->generic_routing.set_route = model_NEW_set_route;
 722 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 723 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 724 //   new_component->generic_routing.get_route = NEW_get_route;
 725 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 726 //   new_component->generic_routing.finalize = NEW_finalize;
 727 //   /* initialization of internal structures */
 728 //   return new_component;
 729 // } /* mandatory */
 730 // static void  model_NEW_load(void) {}   /* mandatory */
 731 // static void  model_NEW_unload(void) {} /* mandatory */
 732 // static void  model_NEW_end(void) {}    /* mandatory */
 733
 734 /* ************************************************************************** */
 735 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 736
 737 void routing_cluster_add_backbone(void* bb) {
 738   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 739         "You have to be in model Cluster to use tag backbone!");
 740   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 741   ((as_cluster_t)current_routing)->backbone = bb;
 742   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 743 }
 744
 745 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 746 {
 747   int start, end, i;
 748   char *groups , *host_id , *link_id = NULL;
 749   unsigned int iter;
 750   xbt_dynar_t radical_elements;
 751   xbt_dynar_t radical_ends;
 752
 753   //Make all hosts
 754   radical_elements = xbt_str_split(cabinet->radical, ",");
 755   xbt_dynar_foreach(radical_elements, iter, groups) {
 756
 757     radical_ends = xbt_str_split(groups, "-");
 758     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 759
 760     switch (xbt_dynar_length(radical_ends)) {
 761     case 1:
 762       end = start;
 763       break;
 764     case 2:
 765       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 766       break;
 767     default:
 768       surf_parse_error("Malformed radical");
 769       break;
 770     }
 771     s_sg_platf_host_cbarg_t host;
 772     memset(&host, 0, sizeof(host));
 773     host.initial_state = SURF_RESOURCE_ON;
 774     host.power_peak = cabinet->power;
 775     host.power_scale = 1.0;
 776     host.core_amount = 1;
 777
 778     s_sg_platf_link_cbarg_t link;
 779     memset(&link, 0, sizeof(link));
 780     link.state = SURF_RESOURCE_ON;
 781     link.policy = SURF_LINK_FULLDUPLEX;
 782     link.latency = cabinet->lat;
 783     link.bandwidth = cabinet->bw;
 784
 785     s_sg_platf_host_link_cbarg_t host_link;
 786     memset(&host_link, 0, sizeof(host_link));
 787
 788     for (i = start; i <= end; i++) {
 789       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 790       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 791       host.id = host_id;
 792       link.id = link_id;
 793       sg_platf_new_host(&host);
 794       sg_platf_new_link(&link);
 795
 796       char* link_up = bprintf("%s_UP",link_id);
 797       char* link_down = bprintf("%s_DOWN",link_id);
 798       host_link.id = host_id;
 799       host_link.link_up = link_up;
 800       host_link.link_down= link_down;
 801       sg_platf_new_host_link(&host_link);
 802
 803       free(host_id);
 804       free(link_id);
 805       free(link_up);
 806       free(link_down);
 807     }
 808
 809     xbt_dynar_free(&radical_ends);
 810   }
 811   xbt_dynar_free(&radical_elements);
 812 }
 813
 814 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 815 {
 816   char *host_id, *groups, *link_id = NULL;
 817   xbt_dict_t patterns = NULL;
 818
 819   s_sg_platf_host_cbarg_t host;
 820   s_sg_platf_link_cbarg_t link;
 821
 822   unsigned int iter;
 823   int start, end, i;
 824   xbt_dynar_t radical_elements;
 825   xbt_dynar_t radical_ends;
 826
 827   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 828       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 829     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 830     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 831     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 832     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 833   }
 834
 835   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 836   sg_platf_new_AS_begin(cluster->id, A_surfxml_AS_routing_Cluster);
 837
 838   current_routing->link_up_down_list
 839             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 840
 841   //Make all hosts
 842   radical_elements = xbt_str_split(cluster->radical, ",");
 843   xbt_dynar_foreach(radical_elements, iter, groups) {
 844
 845     radical_ends = xbt_str_split(groups, "-");
 846     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 847
 848     switch (xbt_dynar_length(radical_ends)) {
 849     case 1:
 850       end = start;
 851       break;
 852     case 2:
 853       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 854       break;
 855     default:
 856       surf_parse_error("Malformed radical");
 857       break;
 858     }
 859     for (i = start; i <= end; i++) {
 860       host_id =
 861           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 862       link_id = bprintf("%s_link_%d", cluster->id, i);
 863
 864       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 865
 866       memset(&host, 0, sizeof(host));
 867       host.id = host_id;
 868       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 869         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 870         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 871         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 872         host.power_trace = tmgr_trace_new_from_file(avail_file);
 873         xbt_free(avail_file);
 874       } else {
 875         XBT_DEBUG("\tavailability_file=\"\"");
 876       }
 877
 878       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 879         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 880         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 881         host.state_trace = tmgr_trace_new_from_file(avail_file);
 882         xbt_free(avail_file);
 883       } else {
 884         XBT_DEBUG("\tstate_file=\"\"");
 885       }
 886
 887       host.power_peak = cluster->power;
 888       host.power_scale = 1.0;
 889       host.core_amount = cluster->core_amount;
 890       host.initial_state = SURF_RESOURCE_ON;
 891       host.coord = "";
 892       sg_platf_new_host(&host);
 893       XBT_DEBUG("</host>");
 894
 895       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 896                 cluster->bw, cluster->lat);
 897
 898       memset(&link, 0, sizeof(link));
 899       link.id = link_id;
 900       link.bandwidth = cluster->bw;
 901       link.latency = cluster->lat;
 902       link.state = SURF_RESOURCE_ON;
 903       link.policy = cluster->sharing_policy;
 904       sg_platf_new_link(&link);
 905
 906       s_surf_parsing_link_up_down_t info;
 907
 908       if (link.policy == SURF_LINK_FULLDUPLEX) {
 909         char *tmp_link = bprintf("%s_UP", link_id);
 910         info.link_up =
 911             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 912         free(tmp_link);
 913         tmp_link = bprintf("%s_DOWN", link_id);
 914         info.link_down =
 915             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 916         free(tmp_link);
 917       } else {
 918         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 919         info.link_down = info.link_up;
 920       }
 921       xbt_dynar_push(current_routing->link_up_down_list,&info);
 922       xbt_free(link_id);
 923       xbt_free(host_id);
 924     }
 925
 926     xbt_dynar_free(&radical_ends);
 927   }
 928   xbt_dynar_free(&radical_elements);
 929
 930   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 931   // and it's very useful to connect clusters together
 932   XBT_DEBUG(" ");
 933   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 934   char *newid = NULL;
 935   s_sg_platf_router_cbarg_t router;
 936   memset(&router, 0, sizeof(router));
 937   router.id = cluster->router_id;
 938   router.coord = "";
 939   if (!router.id || !strcmp(router.id, ""))
 940     router.id = newid =
 941         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 942                 cluster->suffix);
 943   sg_platf_new_router(&router);
 944   free(newid);
 945
 946   //Make the backbone
 947   if ((cluster->bb_bw != 0) && (cluster->bb_lat != 0)) {
 948     char *link_backbone = bprintf("%s_backbone", cluster->id);
 949     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 950               cluster->bb_bw, cluster->bb_lat);
 951
 952     memset(&link, 0, sizeof(link));
 953     link.id = link_backbone;
 954     link.bandwidth = cluster->bb_bw;
 955     link.latency = cluster->bb_lat;
 956     link.state = SURF_RESOURCE_ON;
 957     link.policy = cluster->bb_sharing_policy;
 958
 959     sg_platf_new_link(&link);
 960
 961     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 962
 963     free(link_backbone);
 964   }
 965
 966   XBT_DEBUG("</AS>");
 967   sg_platf_new_AS_end();
 968   XBT_DEBUG(" ");
 969   xbt_dict_free(&patterns); // no op if it were never set
 970 }
 971
 972 static void routing_parse_postparse(void) {
 973   xbt_dict_free(&random_value);
 974 }
 975
 976 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
 977 {
 978   char *host_id = NULL;
 979   char *link_id;
 980
 981   XBT_DEBUG(" ");
 982   host_id = HOST_PEER(peer->id);
 983   link_id = LINK_PEER(peer->id);
 984
 985   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
 986   s_sg_platf_host_cbarg_t host;
 987   memset(&host, 0, sizeof(host));
 988   host.initial_state = SURF_RESOURCE_ON;
 989   host.id = host_id;
 990   host.power_peak = peer->power;
 991   host.power_scale = 1.0;
 992   host.power_trace = peer->availability_trace;
 993   host.state_trace = peer->state_trace;
 994   host.core_amount = 1;
 995   host.coord = peer->coord;
 996   sg_platf_new_host(&host);
 997
 998   s_sg_platf_link_cbarg_t link;
 999   memset(&link, 0, sizeof(link));
1000   link.state = SURF_RESOURCE_ON;
1001   link.policy = SURF_LINK_SHARED;
1002   link.latency = peer->lat;
1003
1004   char* link_up = bprintf("%s_UP",link_id);
1005   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1006             peer->bw_out, peer->lat);
1007   link.id = link_up;
1008   link.bandwidth = peer->bw_out;
1009   sg_platf_new_link(&link);
1010
1011   char* link_down = bprintf("%s_DOWN",link_id);
1012   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1013             peer->bw_in, peer->lat);
1014   link.id = link_down;
1015   link.bandwidth = peer->bw_in;
1016   sg_platf_new_link(&link);
1017
1018   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1019   s_sg_platf_host_link_cbarg_t host_link;
1020   memset(&host_link, 0, sizeof(host_link));
1021   host_link.id = host_id;
1022   host_link.link_up = link_up;
1023   host_link.link_down= link_down;
1024   sg_platf_new_host_link(&host_link);
1025
1026   XBT_DEBUG(" ");
1027
1028   //xbt_dynar_free(&tab_elements_num);
1029   free(host_id);
1030   free(link_id);
1031   free(link_up);
1032   free(link_down);
1033 }
1034
1035 static void routing_parse_Srandom(void)
1036 {
1037   double mean, std, min, max, seed;
1038   char *random_id = A_surfxml_random_id;
1039   char *random_radical = A_surfxml_random_radical;
1040   char *rd_name = NULL;
1041   char *rd_value;
1042   mean = surf_parse_get_double(A_surfxml_random_mean);
1043   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1044   min = surf_parse_get_double(A_surfxml_random_min);
1045   max = surf_parse_get_double(A_surfxml_random_max);
1046   seed = surf_parse_get_double(A_surfxml_random_seed);
1047
1048   double res = 0;
1049   int i = 0;
1050   random_data_t random = xbt_new0(s_random_data_t, 1);
1051   char *tmpbuf;
1052
1053   xbt_dynar_t radical_elements;
1054   unsigned int iter;
1055   char *groups;
1056   int start, end;
1057   xbt_dynar_t radical_ends;
1058
1059   switch (A_surfxml_random_generator) {
1060   case AU_surfxml_random_generator:
1061   case A_surfxml_random_generator_NONE:
1062     random->generator = NONE;
1063     break;
1064   case A_surfxml_random_generator_DRAND48:
1065     random->generator = DRAND48;
1066     break;
1067   case A_surfxml_random_generator_RAND:
1068     random->generator = RAND;
1069     break;
1070   case A_surfxml_random_generator_RNGSTREAM:
1071     random->generator = RNGSTREAM;
1072     break;
1073   default:
1074     surf_parse_error("Invalid random generator");
1075     break;
1076   }
1077   random->seed = seed;
1078   random->min = min;
1079   random->max = max;
1080
1081   /* Check user stupidities */
1082   if (max < min)
1083     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1084   if (mean < min)
1085     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1086   if (mean > max)
1087     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1088
1089   /* normalize the mean and standard deviation before storing */
1090   random->mean = (mean - min) / (max - min);
1091   random->std = std / (max - min);
1092
1093   if (random->mean * (1 - random->mean) < random->std * random->std)
1094     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1095            random->mean, random->std);
1096
1097   XBT_DEBUG
1098       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1099        random_id, random->min, random->max, random->mean, random->std,
1100        (int)random->generator, random->seed, random_radical);
1101
1102   if (!random_value)
1103     random_value = xbt_dict_new_homogeneous(free);
1104
1105   if (!strcmp(random_radical, "")) {
1106     res = random_generate(random);
1107     rd_value = bprintf("%f", res);
1108     xbt_dict_set(random_value, random_id, rd_value, NULL);
1109   } else {
1110     radical_elements = xbt_str_split(random_radical, ",");
1111     xbt_dynar_foreach(radical_elements, iter, groups) {
1112       radical_ends = xbt_str_split(groups, "-");
1113       switch (xbt_dynar_length(radical_ends)) {
1114       case 1:
1115         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1116                    "Custom Random '%s' already exists !", random_id);
1117         res = random_generate(random);
1118         tmpbuf =
1119             bprintf("%s%d", random_id,
1120                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1121         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1122         xbt_free(tmpbuf);
1123         break;
1124
1125       case 2:
1126         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1127         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1128         for (i = start; i <= end; i++) {
1129           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1130                      "Custom Random '%s' already exists !", bprintf("%s%d",
1131                                                                     random_id,
1132                                                                     i));
1133           res = random_generate(random);
1134           tmpbuf = bprintf("%s%d", random_id, i);
1135           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1136           xbt_free(tmpbuf);
1137         }
1138         break;
1139       default:
1140         XBT_CRITICAL("Malformed radical");
1141         break;
1142       }
1143       res = random_generate(random);
1144       rd_name = bprintf("%s_router", random_id);
1145       rd_value = bprintf("%f", res);
1146       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1147
1148       xbt_dynar_free(&radical_ends);
1149     }
1150     free(rd_name);
1151     xbt_dynar_free(&radical_elements);
1152   }
1153 }
1154
1155 void routing_register_callbacks()
1156 {
1157   sg_platf_host_add_cb(parse_S_host);
1158   sg_platf_router_add_cb(parse_S_router);
1159   sg_platf_host_link_add_cb(parse_S_host_link);
1160   sg_platf_route_add_cb(parse_E_route);
1161   sg_platf_ASroute_add_cb(parse_E_ASroute);
1162   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1163   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1164
1165   sg_platf_cluster_add_cb(routing_parse_cluster);
1166   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1167
1168   sg_platf_peer_add_cb(routing_parse_peer);
1169   sg_platf_postparse_add_cb(routing_parse_postparse);
1170
1171   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1172   sg_platf_AS_end_add_cb(routing_AS_end);
1173   sg_platf_AS_begin_add_cb(routing_AS_begin);
1174
1175   sg_platf_trace_add_cb(routing_parse_trace);
1176   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1177
1178 #ifdef HAVE_TRACING
1179   instr_routing_define_callbacks();
1180 #endif
1181 }
1182
1183 /**
1184  * \brief Recursive function for finalize
1185  *
1186  * \param rc the source host name
1187  *
1188  * This fuction is call by "finalize". It allow to finalize the
1189  * AS or routing components. It delete all the structures.
1190  */
1191 static void finalize_rec(AS_t as) {
1192   xbt_dict_cursor_t cursor = NULL;
1193   char *key;
1194   AS_t elem;
1195
1196   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1197     finalize_rec(elem);
1198   }
1199
1200   as->finalize(as);
1201 }
1202
1203 /** \brief Frees all memory allocated by the routing module */
1204 void routing_exit(void) {
1205   if (!routing_platf)
1206     return;
1207   xbt_dynar_free(&routing_platf->last_route);
1208   finalize_rec(routing_platf->root);
1209   xbt_free(routing_platf);
1210 }