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 xbt_lib_t host_lib;
  16 int ROUTING_HOST_LEVEL;         //Routing level
  17 int SURF_CPU_LEVEL;             //Surf cpu level
  18 int SURF_WKS_LEVEL;             //Surf workstation level
  19 int SIMIX_HOST_LEVEL;           //Simix level
  20 int MSG_HOST_LEVEL;             //Msg level
  21 int SD_HOST_LEVEL;              //Simdag level
  22 int COORD_HOST_LEVEL;           //Coordinates level
  23 int NS3_HOST_LEVEL;             //host node for ns3
  24
  25 xbt_lib_t link_lib;
  26 int SD_LINK_LEVEL;              //Simdag level
  27 int SURF_LINK_LEVEL;            //Surf level
  28 int NS3_LINK_LEVEL;             //link for ns3
  29
  30 xbt_lib_t as_router_lib;
  31 int ROUTING_ASR_LEVEL;          //Routing level
  32 int COORD_ASR_LEVEL;            //Coordinates level
  33 int NS3_ASR_LEVEL;              //host node for ns3
  34
  35 static xbt_dict_t random_value = NULL;
  36
  37 /* Global vars */
  38 routing_global_t global_routing = NULL;
  39 AS_t current_routing = NULL;
  40
  41 /* global parse functions */
  42 xbt_dynar_t link_list = NULL;   /* temporary store of current list link of a route */
  43 static const char *src = NULL;  /* temporary store the source name of a route */
  44 static const char *dst = NULL;  /* temporary store the destination name of a route */
  45 static char *gw_src = NULL;     /* temporary store the gateway source name of a route */
  46 static char *gw_dst = NULL;     /* temporary store the gateway destination name of a route */
  47
  48 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  49
  50 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  51 static void routing_parse_Srandom(void);        /* random bypass */
  52
  53 static char *replace_random_parameter(char *chaine);
  54 static void routing_parse_postparse(void);
  55
  56 /* this lines are only for replace use like index in the model table */
  57 typedef enum {
  58   SURF_MODEL_FULL = 0,
  59   SURF_MODEL_FLOYD,
  60   SURF_MODEL_DIJKSTRA,
  61   SURF_MODEL_DIJKSTRACACHE,
  62   SURF_MODEL_NONE,
  63   SURF_MODEL_RULEBASED,
  64   SURF_MODEL_VIVALDI,
  65   SURF_MODEL_CLUSTER
  66 } e_routing_types;
  67
  68 struct s_model_type routing_models[] = {
  69   {"Full",
  70    "Full routing data (fast, large memory requirements, fully expressive)",
  71    model_full_create, model_full_end},
  72   {"Floyd",
  73    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  74    model_floyd_create, model_floyd_end},
  75   {"Dijkstra",
  76    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  77    model_dijkstra_create, model_dijkstra_both_end},
  78   {"DijkstraCache",
  79    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  80    model_dijkstracache_create, model_dijkstra_both_end},
  81   {"none", "No routing (usable with Constant network only)",
  82    model_none_create,  NULL},
  83   {"RuleBased", "Rule-Based routing data (...)",
  84    model_rulebased_create, NULL},
  85   {"Vivaldi", "Vivaldi routing",
  86    model_vivaldi_create, NULL},
  87   {"Cluster", "Cluster routing",
  88    model_cluster_create, NULL},
  89   {NULL, NULL, NULL, NULL}
  90 };
  91
  92 /**
  93  * \brief Add a "host" to the network element list
  94  */
  95 static void parse_S_host(sg_platf_host_cbarg_t host)
  96 {
  97   network_element_info_t info = NULL;
  98   if (current_routing->hierarchy == SURF_ROUTING_NULL)
  99     current_routing->hierarchy = SURF_ROUTING_BASE;
 100   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 101              "Reading a host, processing unit \"%s\" already exists", host->id);
 102
 103   (*(current_routing->parse_PU)) (current_routing, host->id);
 104   info = xbt_new0(s_network_element_info_t, 1);
 105   info->rc_component = current_routing;
 106   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 107   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 108   if (host->coord && strcmp(host->coord, "")) {
 109     if (!COORD_HOST_LEVEL)
 110       xbt_die
 111           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 112     xbt_dynar_t ctn = xbt_str_split_str(host->coord, " ");
 113     xbt_dynar_shrink(ctn, 0);
 114     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 115   }
 116 }
 117
 118 /**
 119  * \brief Add a "router" to the network element list
 120  */
 121 static void parse_S_router(sg_platf_router_cbarg_t router)
 122 {
 123   network_element_info_t info = NULL;
 124   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 125     current_routing->hierarchy = SURF_ROUTING_BASE;
 126   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 127              "Reading a router, processing unit \"%s\" already exists",
 128              router->id);
 129
 130   (*(current_routing->parse_PU)) (current_routing, router->id);
 131   info = xbt_new0(s_network_element_info_t, 1);
 132   info->rc_component = current_routing;
 133   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 134
 135   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 136   if (strcmp(router->coord, "")) {
 137     if (!COORD_ASR_LEVEL)
 138       xbt_die
 139           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 140     xbt_dynar_t ctn = xbt_str_split_str(router->coord, " ");
 141     xbt_dynar_shrink(ctn, 0);
 142     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 143   }
 144 }
 145
 146
 147 /**
 148  * \brief Set the end points for a route
 149  */
 150 static void routing_parse_S_route(void)
 151 {
 152   if (src != NULL && dst != NULL && link_list != NULL)
 153     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 154            A_surfxml_route_src, A_surfxml_route_dst);
 155   src = A_surfxml_route_src;
 156   dst = A_surfxml_route_dst;
 157   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
 158              "Some limits are null in the route between \"%s\" and \"%s\"",
 159              src, dst);
 160   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 161 }
 162
 163 /**
 164  * \brief Set the end points and gateways for a ASroute
 165  */
 166 static void routing_parse_S_ASroute(void)
 167 {
 168   if (src != NULL && dst != NULL && link_list != NULL)
 169     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 170            A_surfxml_ASroute_src, A_surfxml_ASroute_dst);
 171   src = A_surfxml_ASroute_src;
 172   dst = A_surfxml_ASroute_dst;
 173   gw_src = A_surfxml_ASroute_gw_src;
 174   gw_dst = A_surfxml_ASroute_gw_dst;
 175   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 176              || strlen(gw_dst) > 0,
 177              "Some limits are null in the route between \"%s\" and \"%s\"",
 178              src, dst);
 179   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 180 }
 181
 182 /**
 183  * \brief Set the end points for a bypassRoute
 184  */
 185 static void routing_parse_S_bypassRoute(void)
 186 {
 187   if (src != NULL && dst != NULL && link_list != NULL)
 188     THROWF(arg_error, 0,
 189            "Bypass Route between %s to %s can not be defined",
 190            A_surfxml_bypassRoute_src, A_surfxml_bypassRoute_dst);
 191   src = A_surfxml_bypassRoute_src;
 192   dst = A_surfxml_bypassRoute_dst;
 193   gw_src = A_surfxml_bypassRoute_gw_src;
 194   gw_dst = A_surfxml_bypassRoute_gw_dst;
 195   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 196              || strlen(gw_dst) > 0,
 197              "Some limits are null in the route between \"%s\" and \"%s\"",
 198              src, dst);
 199   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 200 }
 201
 202 /**
 203  * \brief Set a new link on the actual list of link for a route or ASroute from XML
 204  */
 205
 206 static void routing_parse_link_ctn(void)
 207 {
 208   char *link_id;
 209   switch (A_surfxml_link_ctn_direction) {
 210   case AU_surfxml_link_ctn_direction:
 211   case A_surfxml_link_ctn_direction_NONE:
 212     link_id = xbt_strdup(A_surfxml_link_ctn_id);
 213     break;
 214   case A_surfxml_link_ctn_direction_UP:
 215     link_id = bprintf("%s_UP", A_surfxml_link_ctn_id);
 216     break;
 217   case A_surfxml_link_ctn_direction_DOWN:
 218     link_id = bprintf("%s_DOWN", A_surfxml_link_ctn_id);
 219     break;
 220   }
 221   xbt_dynar_push(link_list, &link_id);
 222 }
 223
 224 /**
 225  * \brief Store the route by calling the set_route function of the current routing component
 226  */
 227 static void routing_parse_E_route(void)
 228 {
 229   route_extended_t route = xbt_new0(s_route_extended_t, 1);
 230   route->generic_route.link_list = link_list;
 231   xbt_assert(current_routing->parse_route,
 232              "no defined method \"set_route\" in \"%s\"",
 233              current_routing->name);
 234   (*(current_routing->parse_route)) (current_routing, src, dst, route);
 235   link_list = NULL;
 236   src = NULL;
 237   dst = NULL;
 238 }
 239
 240 /**
 241  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 242  */
 243 static void routing_parse_E_ASroute(void)
 244 {
 245   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 246   e_route->generic_route.link_list = link_list;
 247   e_route->src_gateway = xbt_strdup(gw_src);
 248   e_route->dst_gateway = xbt_strdup(gw_dst);
 249   xbt_assert(current_routing->parse_ASroute,
 250              "no defined method \"set_ASroute\" in \"%s\"",
 251              current_routing->name);
 252   (*(current_routing->parse_ASroute)) (current_routing, src, dst, e_route);
 253   link_list = NULL;
 254   src = NULL;
 255   dst = NULL;
 256   gw_src = NULL;
 257   gw_dst = NULL;
 258 }
 259
 260 /**
 261  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 262  */
 263 static void routing_parse_E_bypassRoute(void)
 264 {
 265   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 266   e_route->generic_route.link_list = link_list;
 267   e_route->src_gateway = xbt_strdup(gw_src);
 268   e_route->dst_gateway = xbt_strdup(gw_dst);
 269   xbt_assert(current_routing->parse_bypassroute,
 270              "Bypassing mechanism not implemented by routing '%s'",
 271              current_routing->name);
 272   (*(current_routing->parse_bypassroute)) (current_routing, src, dst, e_route);
 273   link_list = NULL;
 274   src = NULL;
 275   dst = NULL;
 276   gw_src = NULL;
 277   gw_dst = NULL;
 278 }
 279
 280 /**
 281  * \brief Make a new routing component to the platform
 282  *
 283  * Add a new autonomous system to the platform. Any elements (such as host,
 284  * router or sub-AS) added after this call and before the corresponding call
 285  * to sg_platf_new_AS_close() will be added to this AS.
 286  *
 287  * Once this function was called, the configuration concerning the used
 288  * models cannot be changed anymore.
 289  *
 290  * @param AS_id name of this autonomous system. Must be unique in the platform
 291  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 292  */
 293 void routing_AS_begin(const char *AS_id, const char *wanted_routing_type)
 294 {
 295   AS_t new_routing;
 296   routing_model_description_t model = NULL;
 297   int cpt;
 298
 299   /* search the routing model */
 300   for (cpt = 0; routing_models[cpt].name; cpt++)
 301     if (!strcmp(wanted_routing_type, routing_models[cpt].name))
 302       model = &routing_models[cpt];
 303   /* if its not exist, error */
 304   if (model == NULL) {
 305     fprintf(stderr, "Routing model %s not found. Existing models:\n",
 306             wanted_routing_type);
 307     for (cpt = 0; routing_models[cpt].name; cpt++)
 308       fprintf(stderr, "   %s: %s\n", routing_models[cpt].name,
 309               routing_models[cpt].desc);
 310     xbt_die(NULL);
 311   }
 312
 313   /* make a new routing component */
 314   new_routing = (AS_t) (*(model->create)) ();
 315   new_routing->routing = model;
 316   new_routing->hierarchy = SURF_ROUTING_NULL;
 317   new_routing->name = xbt_strdup(AS_id);
 318   new_routing->routing_sons = xbt_dict_new();
 319
 320   if (current_routing == NULL && global_routing->root == NULL) {
 321
 322     /* it is the first one */
 323     new_routing->routing_father = NULL;
 324     global_routing->root = new_routing;
 325
 326   } else if (current_routing != NULL && global_routing->root != NULL) {
 327
 328     xbt_assert(!xbt_dict_get_or_null
 329                (current_routing->routing_sons, AS_id),
 330                "The AS \"%s\" already exists", AS_id);
 331     /* it is a part of the tree */
 332     new_routing->routing_father = current_routing;
 333     /* set the father behavior */
 334     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 335       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 336     /* add to the sons dictionary */
 337     xbt_dict_set(current_routing->routing_sons, AS_id,
 338                  (void *) new_routing, NULL);
 339     /* add to the father element list */
 340     (*(current_routing->parse_AS)) (current_routing, AS_id);
 341   } else {
 342     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 343   }
 344   /* set the new current component of the tree */
 345   current_routing = new_routing;
 346 }
 347
 348 /**
 349  * \brief Specify that the current description of AS is finished
 350  *
 351  * Once you've declared all the content of your AS, you have to close
 352  * it with this call. Your AS is not usable until you call this function.
 353  *
 354  * @fixme: this call is not as robust as wanted: bad things WILL happen
 355  * if you call it twice for the same AS, or if you forget calling it, or
 356  * even if you add stuff to a closed AS
 357  *
 358  */
 359 void routing_AS_end()
 360 {
 361
 362   if (current_routing == NULL) {
 363     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 364   } else {
 365     network_element_info_t info = NULL;
 366     xbt_assert(!xbt_lib_get_or_null
 367                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
 368                "The AS \"%s\" already exists", current_routing->name);
 369     info = xbt_new0(s_network_element_info_t, 1);
 370     info->rc_component = current_routing->routing_father;
 371     info->rc_type = SURF_NETWORK_ELEMENT_AS;
 372     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
 373                 (void *) info);
 374
 375     if (current_routing->routing->end)
 376       (*(current_routing->routing->end)) (current_routing);
 377     current_routing = current_routing->routing_father;
 378   }
 379 }
 380
 381 /* Aux Business methods */
 382
 383 /**
 384  * \brief Get the AS father and the first elements of the chain
 385  *
 386  * \param src the source host name
 387  * \param dst the destination host name
 388  *
 389  * Get the common father of the to processing units, and the first different
 390  * father in the chain
 391  */
 392 static void elements_father(const char *src, const char *dst,
 393                             AS_t * res_father,
 394                             AS_t * res_src,
 395                             AS_t * res_dst)
 396 {
 397   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 398 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 399   AS_t src_as, dst_as;
 400   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 401   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 402   int index_src = 0;
 403   int index_dst = 0;
 404   AS_t current;
 405   AS_t current_src;
 406   AS_t current_dst;
 407   AS_t father;
 408
 409   /* (1) find the as where the src and dst are located */
 410   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
 411                                                         ROUTING_HOST_LEVEL);
 412   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
 413                                                         ROUTING_HOST_LEVEL);
 414   if (!src_data)
 415     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 416   if (!dst_data)
 417     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 418   src_as = src_data->rc_component;
 419   dst_as = dst_data->rc_component;
 420
 421   xbt_assert(src_as && dst_as,
 422              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
 423
 424   /* (2) find the path to the root routing component */
 425   for (current = src_as; current != NULL; current = current->routing_father) {
 426     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 427       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 428     path_src[index_src++] = current;
 429   }
 430   for (current = dst_as; current != NULL; current = current->routing_father) {
 431     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 432       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 433     path_dst[index_dst++] = current;
 434   }
 435
 436   /* (3) find the common father */
 437   do {
 438     current_src = path_src[--index_src];
 439     current_dst = path_dst[--index_dst];
 440   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 441
 442   /* (4) they are not in the same routing component, make the path */
 443   if (current_src == current_dst)
 444     father = current_src;
 445   else
 446     father = path_src[index_src + 1];
 447
 448   /* (5) result generation */
 449   *res_father = father;         /* first the common father of src and dst */
 450   *res_src = current_src;       /* second the first different father of src */
 451   *res_dst = current_dst;       /* three  the first different father of dst */
 452
 453 #undef ELEMENTS_FATHER_MAXDEPTH
 454 }
 455
 456 /* Global Business methods */
 457
 458 /**
 459  * \brief Recursive function for get_route_latency
 460  *
 461  * \param src the source host name
 462  * \param dst the destination host name
 463  * \param *e_route the route where the links are stored
 464  * \param *latency the latency, if needed
 465  *
 466  * This function is called by "get_route" and "get_latency". It allows to walk
 467  * recursively through the routing components tree.
 468  */
 469 static void _get_route_latency(const char *src, const char *dst,
 470                                xbt_dynar_t * route, double *latency)
 471 {
 472   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
 473   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 474
 475   AS_t common_father;
 476   AS_t src_father;
 477   AS_t dst_father;
 478   elements_father(src, dst, &common_father, &src_father, &dst_father);
 479
 480   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 481
 482     route_extended_t e_route = NULL;
 483     if (route) {
 484       e_route = common_father->get_route(common_father, src, dst);
 485       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
 486       *route = e_route->generic_route.link_list;
 487     }
 488     if (latency) {
 489       *latency = common_father->get_latency(common_father, src, dst, e_route);
 490       xbt_assert(*latency >= 0.0,
 491                  "latency error on route between \"%s\" and \"%s\"", src, dst);
 492     }
 493     if (e_route) {
 494       xbt_free(e_route->src_gateway);
 495       xbt_free(e_route->dst_gateway);
 496       xbt_free(e_route);
 497     }
 498
 499   } else {                      /* SURF_ROUTING_RECURSIVE */
 500
 501     route_extended_t e_route_bypass = NULL;
 502     if (common_father->get_bypass_route)
 503       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
 504
 505     xbt_assert(!latency || !e_route_bypass,
 506                "Bypass cannot work yet with get_latency");
 507
 508     route_extended_t e_route_cnt = e_route_bypass
 509         ? e_route_bypass : common_father->get_route(common_father,
 510                                                     src_father->name,
 511                                                     dst_father->name);
 512
 513     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
 514                src_father->name, dst_father->name);
 515
 516     xbt_assert((e_route_cnt->src_gateway == NULL) ==
 517                (e_route_cnt->dst_gateway == NULL),
 518                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
 519
 520     if (route) {
 521       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
 522     }
 523     if (latency) {
 524       *latency = common_father->get_latency(common_father,
 525                                             src_father->name, dst_father->name,
 526                                             e_route_cnt);
 527       xbt_assert(*latency >= 0.0,
 528                  "latency error on route between \"%s\" and \"%s\"",
 529                  src_father->name, dst_father->name);
 530     }
 531
 532     void *link;
 533     unsigned int cpt;
 534
 535     if (strcmp(src, e_route_cnt->src_gateway)) {
 536       double latency_src;
 537       xbt_dynar_t route_src;
 538
 539       _get_route_latency(src, e_route_cnt->src_gateway,
 540                          (route ? &route_src : NULL),
 541                          (latency ? &latency_src : NULL));
 542       if (route) {
 543         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
 544                    src, e_route_cnt->src_gateway);
 545         xbt_dynar_foreach(route_src, cpt, link) {
 546           xbt_dynar_push(*route, &link);
 547         }
 548         xbt_dynar_free(&route_src);
 549       }
 550       if (latency) {
 551         xbt_assert(latency_src >= 0.0,
 552                    "latency error on route between \"%s\" and \"%s\"",
 553                    src, e_route_cnt->src_gateway);
 554         *latency += latency_src;
 555       }
 556     }
 557
 558     if (route) {
 559       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
 560         xbt_dynar_push(*route, &link);
 561       }
 562     }
 563
 564     if (strcmp(e_route_cnt->dst_gateway, dst)) {
 565       double latency_dst;
 566       xbt_dynar_t route_dst;
 567
 568       _get_route_latency(e_route_cnt->dst_gateway, dst,
 569                          (route ? &route_dst : NULL),
 570                          (latency ? &latency_dst : NULL));
 571       if (route) {
 572         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
 573                    e_route_cnt->dst_gateway, dst);
 574         xbt_dynar_foreach(route_dst, cpt, link) {
 575           xbt_dynar_push(*route, &link);
 576         }
 577         xbt_dynar_free(&route_dst);
 578       }
 579       if (latency) {
 580         xbt_assert(latency_dst >= 0.0,
 581                    "latency error on route between \"%s\" and \"%s\"",
 582                    e_route_cnt->dst_gateway, dst);
 583         *latency += latency_dst;
 584       }
 585     }
 586
 587     generic_free_extended_route(e_route_cnt);
 588   }
 589 }
 590
 591 /**
 592  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
 593  */
 594 static void get_route_latency(const char *src, const char *dst,
 595                               xbt_dynar_t * route, double *latency, int cleanup)
 596 {
 597   _get_route_latency(src, dst, route, latency);
 598   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
 599   xbt_assert(!latency || *latency >= 0.0,
 600              "latency error on route between \"%s\" and \"%s\"", src, dst);
 601   if (route) {
 602     xbt_dynar_free(&global_routing->last_route);
 603     global_routing->last_route = cleanup ? *route : NULL;
 604   }
 605 }
 606
 607 /**
 608  * \brief Generic method: find a route between hosts
 609  *
 610  * \param src the source host name
 611  * \param dst the destination host name
 612  *
 613  * walk through the routing components tree and find a route between hosts
 614  * by calling the differents "get_route" functions in each routing component.
 615  * No need to free the returned dynar. It will be freed at the next call.
 616  */
 617 static xbt_dynar_t get_route(const char *src, const char *dst)
 618 {
 619   xbt_dynar_t route = NULL;
 620   get_route_latency(src, dst, &route, NULL, 1);
 621   return route;
 622 }
 623
 624 /**
 625  * \brief Generic method: find a route between hosts
 626  *
 627  * \param src the source host name
 628  * \param dst the destination host name
 629  *
 630  * same as get_route, but return NULL if any exception is raised.
 631  */
 632 static xbt_dynar_t get_route_or_null(const char *src, const char *dst)
 633 {
 634   xbt_dynar_t route = NULL;
 635   xbt_ex_t exception;
 636   TRY {
 637     get_route_latency(src, dst, &route, NULL, 1);
 638   } CATCH(exception) {
 639     xbt_ex_free(exception);
 640     return NULL;
 641   }
 642   return route;
 643 }
 644
 645 /**
 646  * \brief Generic method: find a route between hosts
 647  *
 648  * \param src the source host name
 649  * \param dst the destination host name
 650  *
 651  * walk through the routing components tree and find a route between hosts
 652  * by calling the differents "get_route" functions in each routing component.
 653  * Leaves the caller the responsability to clean the returned dynar.
 654  */
 655 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
 656 {
 657   xbt_dynar_t route = NULL;
 658   get_route_latency(src, dst, &route, NULL, 0);
 659   return route;
 660 }
 661
 662 static double get_latency(const char *src, const char *dst) {
 663   double latency = -1.0;
 664   get_route_latency(src, dst, NULL, &latency, 0);
 665   return latency;
 666 }
 667
 668
 669 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 670 {
 671   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 672
 673   //adding my one link routes
 674   unsigned int cpt;
 675   void *link;
 676   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 677   if (onelink_mine) {
 678     xbt_dynar_foreach(onelink_mine, cpt, link) {
 679       xbt_dynar_push(ret, &link);
 680     }
 681   }
 682   //recursing
 683   char *key;
 684   xbt_dict_cursor_t cursor = NULL;
 685   AS_t rc_child;
 686   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 687     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 688     if (onelink_child) {
 689       xbt_dynar_foreach(onelink_child, cpt, link) {
 690         xbt_dynar_push(ret, &link);
 691       }
 692     }
 693   }
 694   return ret;
 695 }
 696
 697 static xbt_dynar_t get_onelink_routes(void)
 698 {
 699   return recursive_get_onelink_routes(global_routing->root);
 700 }
 701
 702 e_surf_network_element_type_t get_network_element_type(const char *name)
 703 {
 704   network_element_info_t rc = NULL;
 705
 706   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 707   if (rc)
 708     return rc->rc_type;
 709
 710   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 711   if (rc)
 712     return rc->rc_type;
 713
 714   return SURF_NETWORK_ELEMENT_NULL;
 715 }
 716
 717 /**
 718  * \brief Generic method: create the global routing schema
 719  *
 720  * Make a global routing structure and set all the parsing functions.
 721  */
 722 void routing_model_create(size_t size_of_links, void *loopback)
 723 {
 724   /* config the uniq global routing */
 725   global_routing = xbt_new0(s_routing_global_t, 1);
 726   global_routing->root = NULL;
 727   global_routing->get_route = get_route;
 728   global_routing->get_route_or_null = get_route_or_null;
 729   global_routing->get_latency = get_latency;
 730   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 731   global_routing->get_onelink_routes = get_onelink_routes;
 732   global_routing->get_route_latency = get_route_latency;
 733   global_routing->get_network_element_type = get_network_element_type;
 734   global_routing->loopback = loopback;
 735   global_routing->size_of_link = size_of_links;
 736   global_routing->last_route = NULL;
 737   /* no current routing at moment */
 738   current_routing = NULL;
 739 }
 740
 741
 742 /* ************************************************** */
 743 /* ********** PATERN FOR NEW ROUTING **************** */
 744
 745 /* The minimal configuration of a new routing model need the next functions,
 746  * also you need to set at the start of the file, the new model in the model
 747  * list. Remember keep the null ending of the list.
 748  */
 749 /*** Routing model structure ***/
 750 // typedef struct {
 751 //   s_routing_component_t generic_routing;
 752 //   /* things that your routing model need */
 753 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 754
 755 /*** Parse routing model functions ***/
 756 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 757 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 758 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 759 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 760 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 761
 762 /*** Business methods ***/
 763 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 764 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 765 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 766
 767 /*** Creation routing model functions ***/
 768 // static void* model_NEW_create(void) {
 769 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 770 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 771 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 772 //   new_component->generic_routing.set_route = model_NEW_set_route;
 773 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 774 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 775 //   new_component->generic_routing.get_route = NEW_get_route;
 776 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 777 //   new_component->generic_routing.finalize = NEW_finalize;
 778 //   /* initialization of internal structures */
 779 //   return new_component;
 780 // } /* mandatory */
 781 // static void  model_NEW_load(void) {}   /* mandatory */
 782 // static void  model_NEW_unload(void) {} /* mandatory */
 783 // static void  model_NEW_end(void) {}    /* mandatory */
 784
 785 /* ************************************************************************** */
 786 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 787
 788
 789 static void routing_parse_cluster(void)
 790 {
 791   char *host_id, *groups, *link_id = NULL;
 792   xbt_dict_t patterns = NULL;
 793
 794   s_sg_platf_host_cbarg_t host;
 795   s_sg_platf_link_cbarg_t link;
 796
 797   if (strcmp(struct_cluster->availability_trace, "")
 798       || strcmp(struct_cluster->state_trace, "")) {
 799     patterns = xbt_dict_new();
 800     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
 801     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
 802     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
 803   }
 804
 805   unsigned int iter;
 806   int start, end, i;
 807   xbt_dynar_t radical_elements;
 808   xbt_dynar_t radical_ends;
 809
 810   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
 811   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
 812
 813   //Make all hosts
 814   radical_elements = xbt_str_split(struct_cluster->radical, ",");
 815   xbt_dynar_foreach(radical_elements, iter, groups) {
 816     memset(&host, 0, sizeof(host));
 817
 818     radical_ends = xbt_str_split(groups, "-");
 819     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 820
 821     switch (xbt_dynar_length(radical_ends)) {
 822     case 1:
 823       end = start;
 824       break;
 825     case 2:
 826       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 827       break;
 828     default:
 829       surf_parse_error("Malformed radical");
 830       break;
 831     }
 832     for (i = start; i <= end; i++) {
 833       host_id =
 834           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
 835       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
 836
 837       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
 838                 struct_cluster->power);
 839       host.id = host_id;
 840       if (strcmp(struct_cluster->availability_trace, "")) {
 841         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 842         char *tmp_availability_file =
 843             xbt_str_varsubst(struct_cluster->availability_trace, patterns);
 844         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
 845         host.power_trace = tmgr_trace_new(tmp_availability_file);
 846         xbt_free(tmp_availability_file);
 847       } else {
 848         XBT_DEBUG("\tavailability_file=\"\"");
 849       }
 850       if (strcmp(struct_cluster->state_trace, "")) {
 851         char *tmp_state_file =
 852             xbt_str_varsubst(struct_cluster->state_trace, patterns);
 853         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
 854         host.state_trace = tmgr_trace_new(tmp_state_file);
 855         xbt_free(tmp_state_file);
 856       } else {
 857         XBT_DEBUG("\tstate_file=\"\"");
 858       }
 859
 860       host.power_peak = struct_cluster->power;
 861       host.power_scale = 1.0;
 862       host.core_amount = struct_cluster->core_amount;
 863       host.initial_state = SURF_RESOURCE_ON;
 864       host.coord = "";
 865       sg_platf_new_host(&host);
 866       XBT_DEBUG("</host>");
 867
 868       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 869                 struct_cluster->bw, struct_cluster->lat);
 870
 871       memset(&link, 0, sizeof(link));
 872       link.id = link_id;
 873       link.bandwidth = struct_cluster->bw;
 874       link.latency = struct_cluster->lat;
 875       link.state = SURF_RESOURCE_ON;
 876
 877       switch (struct_cluster->sharing_policy) {
 878       case A_surfxml_cluster_sharing_policy_SHARED:
 879         link.policy = SURF_LINK_SHARED;
 880         break;
 881       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
 882         link.policy = SURF_LINK_FULLDUPLEX;
 883         break;
 884       case A_surfxml_cluster_sharing_policy_FATPIPE:
 885         link.policy = SURF_LINK_FATPIPE;
 886         break;
 887       default:
 888         surf_parse_error(bprintf
 889                          ("Invalid cluster sharing policy for cluster %s",
 890                           struct_cluster->id));
 891         break;
 892       }
 893       sg_platf_new_link(&link);
 894
 895       surf_parsing_link_up_down_t info =
 896           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 897       if (link.policy == SURF_LINK_FULLDUPLEX) {
 898         char *tmp_link = bprintf("%s_UP", link_id);
 899         info->link_up =
 900             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 901         free(tmp_link);
 902         tmp_link = bprintf("%s_DOWN", link_id);
 903         info->link_down =
 904             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 905         free(tmp_link);
 906       } else {
 907         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 908         info->link_down = info->link_up;
 909       }
 910       surf_routing_cluster_add_link(host_id, info);
 911
 912       xbt_free(link_id);
 913       xbt_free(host_id);
 914     }
 915
 916     xbt_dynar_free(&radical_ends);
 917   }
 918   xbt_dynar_free(&radical_elements);
 919
 920   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written, and it's very useful to connect clusters together
 921   XBT_DEBUG(" ");
 922   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
 923   s_sg_platf_router_cbarg_t router;
 924   char *newid = NULL;
 925   memset(&router, 0, sizeof(router));
 926   router.id = struct_cluster->router_id;
 927   router.coord = "";
 928   if (!router.id || !strcmp(router.id, ""))
 929     router.id = newid =
 930         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
 931                 struct_cluster->suffix);
 932   sg_platf_new_router(&router);
 933   free(newid);
 934
 935   //Make the backbone
 936   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
 937     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
 938     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 939               struct_cluster->bb_bw, struct_cluster->bb_lat);
 940
 941     memset(&link, 0, sizeof(link));
 942     link.id = link_backbone;
 943     link.bandwidth = struct_cluster->bb_bw;
 944     link.latency = struct_cluster->bb_lat;
 945     link.state = SURF_RESOURCE_ON;
 946
 947     switch (struct_cluster->bb_sharing_policy) {
 948     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
 949       link.policy = SURF_LINK_FATPIPE;
 950       break;
 951     case A_surfxml_cluster_bb_sharing_policy_SHARED:
 952       link.policy = SURF_LINK_SHARED;
 953       break;
 954     default:
 955       surf_parse_error(bprintf
 956                        ("Invalid bb sharing policy in cluster %s",
 957                         struct_cluster->id));
 958       break;
 959     }
 960
 961     sg_platf_new_link(&link);
 962
 963     surf_parsing_link_up_down_t info =
 964         xbt_new0(s_surf_parsing_link_up_down_t, 1);
 965     info->link_up =
 966         xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL);
 967     info->link_down = info->link_up;
 968     surf_routing_cluster_add_link(struct_cluster->id, info);
 969
 970     free(link_backbone);
 971   }
 972
 973   XBT_DEBUG(" ");
 974
 975   char *new_suffix = xbt_strdup("");
 976
 977   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
 978   xbt_dynar_foreach(radical_elements, iter, groups) {
 979     if (strcmp(groups, "")) {
 980       char *old_suffix = new_suffix;
 981       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
 982       free(old_suffix);
 983     }
 984   }
 985
 986   xbt_dynar_free(&radical_elements);
 987   xbt_free(new_suffix);
 988
 989   XBT_DEBUG("</AS>");
 990   sg_platf_new_AS_end();
 991   XBT_DEBUG(" ");
 992   xbt_dict_free(&patterns); // no op if it were never set
 993 }
 994
 995 static void routing_parse_postparse(void) {
 996   xbt_dict_free(&random_value);
 997 }
 998
 999 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1000 {
1001   static int AX_ptr = 0;
1002   char *host_id = NULL;
1003   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
1004
1005   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
1006   static unsigned int surfxml_buffer_stack_stack[1024];
1007
1008   surfxml_buffer_stack_stack[0] = 0;
1009
1010   surfxml_bufferstack_push(1);
1011
1012   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
1013   sg_platf_new_AS_begin(peer->id, "Full");
1014
1015   XBT_DEBUG(" ");
1016   host_id = HOST_PEER(peer->id);
1017   router_id = ROUTER_PEER(peer->id);
1018   link_id_up = LINK_UP_PEER(peer->id);
1019   link_id_down = LINK_DOWN_PEER(peer->id);
1020
1021   link_router = bprintf("%s_link_router", peer->id);
1022   link_backbone = bprintf("%s_backbone", peer->id);
1023
1024   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1025   s_sg_platf_host_cbarg_t host;
1026   memset(&host, 0, sizeof(host));
1027   host.initial_state = SURF_RESOURCE_ON;
1028   host.id = host_id;
1029   host.power_peak = peer->power;
1030   host.power_scale = 1.0;
1031   host.power_trace = peer->availability_trace;
1032   host.state_trace = peer->state_trace;
1033   host.core_amount = 1;
1034   sg_platf_new_host(&host);
1035
1036
1037   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1038   s_sg_platf_router_cbarg_t router;
1039   memset(&router, 0, sizeof(router));
1040   router.id = router_id;
1041   router.coord = peer->coord;
1042   sg_platf_new_router(&router);
1043
1044   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1045             peer->bw_in, peer->lat);
1046   s_sg_platf_link_cbarg_t link;
1047   memset(&link, 0, sizeof(link));
1048   link.state = SURF_RESOURCE_ON;
1049   link.policy = SURF_LINK_SHARED;
1050   link.id = link_id_up;
1051   link.bandwidth = peer->bw_in;
1052   link.latency = peer->lat;
1053   sg_platf_new_link(&link);
1054
1055   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1056   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1057   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1058             peer->bw_out, peer->lat);
1059   link.id = link_id_down;
1060   sg_platf_new_link(&link);
1061
1062   XBT_DEBUG(" ");
1063
1064   // begin here
1065   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1066   XBT_DEBUG("symmetrical=\"NO\">");
1067   SURFXML_BUFFER_SET(route_src, host_id);
1068   SURFXML_BUFFER_SET(route_dst, router_id);
1069   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1070   SURFXML_START_TAG(route);
1071
1072   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1073   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1074   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1075   SURFXML_START_TAG(link_ctn);
1076   SURFXML_END_TAG(link_ctn);
1077
1078   XBT_DEBUG("</route>");
1079   SURFXML_END_TAG(route);
1080
1081   //Opposite Route
1082   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1083   XBT_DEBUG("symmetrical=\"NO\">");
1084   SURFXML_BUFFER_SET(route_src, router_id);
1085   SURFXML_BUFFER_SET(route_dst, host_id);
1086   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1087   SURFXML_START_TAG(route);
1088
1089   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1090   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1091   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1092   SURFXML_START_TAG(link_ctn);
1093   SURFXML_END_TAG(link_ctn);
1094
1095   XBT_DEBUG("</route>");
1096   SURFXML_END_TAG(route);
1097
1098   XBT_DEBUG("</AS>");
1099   sg_platf_new_AS_end();
1100   XBT_DEBUG(" ");
1101
1102   //xbt_dynar_free(&tab_elements_num);
1103   free(host_id);
1104   free(router_id);
1105   free(link_router);
1106   free(link_backbone);
1107   free(link_id_up);
1108   free(link_id_down);
1109   surfxml_bufferstack_pop(1);
1110 }
1111
1112 static void routing_parse_Srandom(void)
1113 {
1114   double mean, std, min, max, seed;
1115   char *random_id = A_surfxml_random_id;
1116   char *random_radical = A_surfxml_random_radical;
1117   char *rd_name = NULL;
1118   char *rd_value;
1119   mean = surf_parse_get_double(A_surfxml_random_mean);
1120   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1121   min = surf_parse_get_double(A_surfxml_random_min);
1122   max = surf_parse_get_double(A_surfxml_random_max);
1123   seed = surf_parse_get_double(A_surfxml_random_seed);
1124
1125   double res = 0;
1126   int i = 0;
1127   random_data_t random = xbt_new0(s_random_data_t, 1);
1128   char *tmpbuf;
1129
1130   xbt_dynar_t radical_elements;
1131   unsigned int iter;
1132   char *groups;
1133   int start, end;
1134   xbt_dynar_t radical_ends;
1135
1136   random->generator = A_surfxml_random_generator;
1137   random->seed = seed;
1138   random->min = min;
1139   random->max = max;
1140
1141   /* Check user stupidities */
1142   if (max < min)
1143     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1144   if (mean < min)
1145     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1146   if (mean > max)
1147     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1148
1149   /* normalize the mean and standard deviation before storing */
1150   random->mean = (mean - min) / (max - min);
1151   random->std = std / (max - min);
1152
1153   if (random->mean * (1 - random->mean) < random->std * random->std)
1154     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1155            random->mean, random->std);
1156
1157   XBT_DEBUG
1158       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1159        random_id, random->min, random->max, random->mean, random->std,
1160        random->generator, random->seed, random_radical);
1161
1162   if (xbt_dict_size(random_value) == 0)
1163     random_value = xbt_dict_new();
1164
1165   if (!strcmp(random_radical, "")) {
1166     res = random_generate(random);
1167     rd_value = bprintf("%f", res);
1168     xbt_dict_set(random_value, random_id, rd_value, free);
1169   } else {
1170     radical_elements = xbt_str_split(random_radical, ",");
1171     xbt_dynar_foreach(radical_elements, iter, groups) {
1172       radical_ends = xbt_str_split(groups, "-");
1173       switch (xbt_dynar_length(radical_ends)) {
1174       case 1:
1175         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1176                    "Custom Random '%s' already exists !", random_id);
1177         res = random_generate(random);
1178         tmpbuf =
1179             bprintf("%s%d", random_id,
1180                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1181         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1182         xbt_free(tmpbuf);
1183         break;
1184
1185       case 2:
1186         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1187         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1188         for (i = start; i <= end; i++) {
1189           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1190                      "Custom Random '%s' already exists !", bprintf("%s%d",
1191                                                                     random_id,
1192                                                                     i));
1193           res = random_generate(random);
1194           tmpbuf = bprintf("%s%d", random_id, i);
1195           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1196           xbt_free(tmpbuf);
1197         }
1198         break;
1199       default:
1200         XBT_INFO("Malformed radical");
1201         break;
1202       }
1203       res = random_generate(random);
1204       rd_name = bprintf("%s_router", random_id);
1205       rd_value = bprintf("%f", res);
1206       xbt_dict_set(random_value, rd_name, rd_value, free);
1207
1208       xbt_dynar_free(&radical_ends);
1209     }
1210     free(rd_name);
1211     xbt_dynar_free(&radical_elements);
1212   }
1213 }
1214
1215 void routing_register_callbacks()
1216 {
1217   sg_platf_host_add_cb(parse_S_host);
1218   sg_platf_router_add_cb(parse_S_router);
1219
1220   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1221
1222   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1223   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1224   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1225                        &routing_parse_S_bypassRoute);
1226
1227   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1228
1229   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1230   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1231   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1232                        &routing_parse_E_bypassRoute);
1233
1234   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1235
1236   sg_platf_peer_add_cb(routing_parse_peer);
1237   sg_platf_postparse_add_cb(routing_parse_postparse);
1238
1239 #ifdef HAVE_TRACING
1240   instr_routing_define_callbacks();
1241 #endif
1242 }
1243
1244 /**
1245  * \brief Recursive function for finalize
1246  *
1247  * \param rc the source host name
1248  *
1249  * This fuction is call by "finalize". It allow to finalize the
1250  * AS or routing components. It delete all the structures.
1251  */
1252 static void finalize_rec(AS_t as) {
1253   xbt_dict_cursor_t cursor = NULL;
1254   char *key;
1255   AS_t elem;
1256
1257   xbt_dict_foreach(as->routing_sons, cursor, key, elem)
1258   finalize_rec(elem);
1259
1260   xbt_dict_free(&as->routing_sons);
1261   xbt_free(as->name);
1262   as->finalize(as);
1263 }
1264
1265 /** \brief Frees all memory allocated by the routing module */
1266 void routing_exit(void) {
1267   if (!global_routing)
1268     return;
1269   finalize_rec(global_routing->root);
1270   xbt_dynar_free(&global_routing->last_route);
1271   xbt_free(global_routing);
1272 }