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  * \brief Recursive function for finalize
 670  *
 671  * \param rc the source host name
 672  *
 673  * This fuction is call by "finalize". It allow to finalize the
 674  * AS or routing components. It delete all the structures.
 675  */
 676 static void finalize_rec(AS_t as) {
 677   xbt_dict_cursor_t cursor = NULL;
 678   char *key;
 679   AS_t elem;
 680
 681   xbt_dict_foreach(as->routing_sons, cursor, key, elem)
 682   finalize_rec(elem);
 683
 684   xbt_dict_free(&as->routing_sons);
 685   xbt_free(as->name);
 686   as->finalize(as);
 687 }
 688
 689 /**
 690  * \brief Generic method: delete all the routing structures
 691  *
 692  * walk through the routing components tree and delete the structures
 693  * by calling the different "finalize" functions in each routing component
 694  */
 695 static void finalize(void) {
 696   finalize_rec(global_routing->root);
 697   xbt_dynar_free(&global_routing->last_route);
 698   xbt_free(global_routing);
 699 }
 700
 701 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 702 {
 703   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 704
 705   //adding my one link routes
 706   unsigned int cpt;
 707   void *link;
 708   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 709   if (onelink_mine) {
 710     xbt_dynar_foreach(onelink_mine, cpt, link) {
 711       xbt_dynar_push(ret, &link);
 712     }
 713   }
 714   //recursing
 715   char *key;
 716   xbt_dict_cursor_t cursor = NULL;
 717   AS_t rc_child;
 718   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 719     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 720     if (onelink_child) {
 721       xbt_dynar_foreach(onelink_child, cpt, link) {
 722         xbt_dynar_push(ret, &link);
 723       }
 724     }
 725   }
 726   return ret;
 727 }
 728
 729 static xbt_dynar_t get_onelink_routes(void)
 730 {
 731   return recursive_get_onelink_routes(global_routing->root);
 732 }
 733
 734 e_surf_network_element_type_t get_network_element_type(const char *name)
 735 {
 736   network_element_info_t rc = NULL;
 737
 738   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 739   if (rc)
 740     return rc->rc_type;
 741
 742   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 743   if (rc)
 744     return rc->rc_type;
 745
 746   return SURF_NETWORK_ELEMENT_NULL;
 747 }
 748
 749 /**
 750  * \brief Generic method: create the global routing schema
 751  *
 752  * Make a global routing structure and set all the parsing functions.
 753  */
 754 void routing_model_create(size_t size_of_links, void *loopback)
 755 {
 756   /* config the uniq global routing */
 757   global_routing = xbt_new0(s_routing_global_t, 1);
 758   global_routing->root = NULL;
 759   global_routing->get_route = get_route;
 760   global_routing->get_route_or_null = get_route_or_null;
 761   global_routing->get_latency = get_latency;
 762   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 763   global_routing->get_onelink_routes = get_onelink_routes;
 764   global_routing->get_route_latency = get_route_latency;
 765   global_routing->get_network_element_type = get_network_element_type;
 766   global_routing->finalize = finalize;
 767   global_routing->loopback = loopback;
 768   global_routing->size_of_link = size_of_links;
 769   global_routing->last_route = NULL;
 770   /* no current routing at moment */
 771   current_routing = NULL;
 772 }
 773
 774
 775 /* ************************************************** */
 776 /* ********** PATERN FOR NEW ROUTING **************** */
 777
 778 /* The minimal configuration of a new routing model need the next functions,
 779  * also you need to set at the start of the file, the new model in the model
 780  * list. Remember keep the null ending of the list.
 781  */
 782 /*** Routing model structure ***/
 783 // typedef struct {
 784 //   s_routing_component_t generic_routing;
 785 //   /* things that your routing model need */
 786 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 787
 788 /*** Parse routing model functions ***/
 789 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 790 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 791 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 792 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 793 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 794
 795 /*** Business methods ***/
 796 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 797 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 798 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 799
 800 /*** Creation routing model functions ***/
 801 // static void* model_NEW_create(void) {
 802 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 803 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 804 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 805 //   new_component->generic_routing.set_route = model_NEW_set_route;
 806 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 807 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 808 //   new_component->generic_routing.get_route = NEW_get_route;
 809 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 810 //   new_component->generic_routing.finalize = NEW_finalize;
 811 //   /* initialization of internal structures */
 812 //   return new_component;
 813 // } /* mandatory */
 814 // static void  model_NEW_load(void) {}   /* mandatory */
 815 // static void  model_NEW_unload(void) {} /* mandatory */
 816 // static void  model_NEW_end(void) {}    /* mandatory */
 817
 818 /* ************************************************************************** */
 819 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 820
 821
 822 static void routing_parse_cluster(void)
 823 {
 824   char *host_id, *groups, *link_id = NULL;
 825   xbt_dict_t patterns = NULL;
 826
 827   s_sg_platf_host_cbarg_t host;
 828   s_sg_platf_link_cbarg_t link;
 829
 830   if (strcmp(struct_cluster->availability_trace, "")
 831       || strcmp(struct_cluster->state_trace, "")) {
 832     patterns = xbt_dict_new();
 833     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
 834     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
 835     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
 836   }
 837
 838   unsigned int iter;
 839   int start, end, i;
 840   xbt_dynar_t radical_elements;
 841   xbt_dynar_t radical_ends;
 842
 843   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
 844   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
 845
 846   //Make all hosts
 847   radical_elements = xbt_str_split(struct_cluster->radical, ",");
 848   xbt_dynar_foreach(radical_elements, iter, groups) {
 849     memset(&host, 0, sizeof(host));
 850
 851     radical_ends = xbt_str_split(groups, "-");
 852     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 853
 854     switch (xbt_dynar_length(radical_ends)) {
 855     case 1:
 856       end = start;
 857       break;
 858     case 2:
 859       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 860       break;
 861     default:
 862       surf_parse_error("Malformed radical");
 863       break;
 864     }
 865     for (i = start; i <= end; i++) {
 866       host_id =
 867           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
 868       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
 869
 870       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
 871                 struct_cluster->power);
 872       host.id = host_id;
 873       if (strcmp(struct_cluster->availability_trace, "")) {
 874         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 875         char *tmp_availability_file =
 876             xbt_str_varsubst(struct_cluster->availability_trace, patterns);
 877         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
 878         host.power_trace = tmgr_trace_new(tmp_availability_file);
 879         xbt_free(tmp_availability_file);
 880       } else {
 881         XBT_DEBUG("\tavailability_file=\"\"");
 882       }
 883       if (strcmp(struct_cluster->state_trace, "")) {
 884         char *tmp_state_file =
 885             xbt_str_varsubst(struct_cluster->state_trace, patterns);
 886         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
 887         host.state_trace = tmgr_trace_new(tmp_state_file);
 888         xbt_free(tmp_state_file);
 889       } else {
 890         XBT_DEBUG("\tstate_file=\"\"");
 891       }
 892
 893       host.power_peak = struct_cluster->power;
 894       host.power_scale = 1.0;
 895       host.core_amount = struct_cluster->core_amount;
 896       host.initial_state = SURF_RESOURCE_ON;
 897       host.coord = "";
 898       sg_platf_new_host(&host);
 899       XBT_DEBUG("</host>");
 900
 901       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 902                 struct_cluster->bw, struct_cluster->lat);
 903
 904       memset(&link, 0, sizeof(link));
 905       link.id = link_id;
 906       link.bandwidth = struct_cluster->bw;
 907       link.latency = struct_cluster->lat;
 908       link.state = SURF_RESOURCE_ON;
 909
 910       switch (struct_cluster->sharing_policy) {
 911       case A_surfxml_cluster_sharing_policy_SHARED:
 912         link.policy = SURF_LINK_SHARED;
 913         break;
 914       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
 915         link.policy = SURF_LINK_FULLDUPLEX;
 916         break;
 917       case A_surfxml_cluster_sharing_policy_FATPIPE:
 918         link.policy = SURF_LINK_FATPIPE;
 919         break;
 920       default:
 921         surf_parse_error(bprintf
 922                          ("Invalid cluster sharing policy for cluster %s",
 923                           struct_cluster->id));
 924         break;
 925       }
 926       sg_platf_new_link(&link);
 927
 928       surf_parsing_link_up_down_t info =
 929           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 930       if (link.policy == SURF_LINK_FULLDUPLEX) {
 931         char *tmp_link = bprintf("%s_UP", link_id);
 932         info->link_up =
 933             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 934         free(tmp_link);
 935         tmp_link = bprintf("%s_DOWN", link_id);
 936         info->link_down =
 937             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 938         free(tmp_link);
 939       } else {
 940         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 941         info->link_down = info->link_up;
 942       }
 943       surf_routing_cluster_add_link(host_id, info);
 944
 945       xbt_free(link_id);
 946       xbt_free(host_id);
 947     }
 948
 949     xbt_dynar_free(&radical_ends);
 950   }
 951   xbt_dynar_free(&radical_elements);
 952
 953   // 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
 954   XBT_DEBUG(" ");
 955   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
 956   s_sg_platf_router_cbarg_t router;
 957   char *newid = NULL;
 958   memset(&router, 0, sizeof(router));
 959   router.id = struct_cluster->router_id;
 960   router.coord = "";
 961   if (!router.id || !strcmp(router.id, ""))
 962     router.id = newid =
 963         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
 964                 struct_cluster->suffix);
 965   sg_platf_new_router(&router);
 966   free(newid);
 967
 968   //Make the backbone
 969   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
 970     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
 971     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 972               struct_cluster->bb_bw, struct_cluster->bb_lat);
 973
 974     memset(&link, 0, sizeof(link));
 975     link.id = link_backbone;
 976     link.bandwidth = struct_cluster->bb_bw;
 977     link.latency = struct_cluster->bb_lat;
 978     link.state = SURF_RESOURCE_ON;
 979
 980     switch (struct_cluster->bb_sharing_policy) {
 981     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
 982       link.policy = SURF_LINK_FATPIPE;
 983       break;
 984     case A_surfxml_cluster_bb_sharing_policy_SHARED:
 985       link.policy = SURF_LINK_SHARED;
 986       break;
 987     default:
 988       surf_parse_error(bprintf
 989                        ("Invalid bb sharing policy in cluster %s",
 990                         struct_cluster->id));
 991       break;
 992     }
 993
 994     sg_platf_new_link(&link);
 995
 996     surf_parsing_link_up_down_t info =
 997         xbt_new0(s_surf_parsing_link_up_down_t, 1);
 998     info->link_up =
 999         xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL);
1000     info->link_down = info->link_up;
1001     surf_routing_cluster_add_link(struct_cluster->id, info);
1002
1003     free(link_backbone);
1004   }
1005
1006   XBT_DEBUG(" ");
1007
1008   char *new_suffix = xbt_strdup("");
1009
1010   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
1011   xbt_dynar_foreach(radical_elements, iter, groups) {
1012     if (strcmp(groups, "")) {
1013       char *old_suffix = new_suffix;
1014       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
1015       free(old_suffix);
1016     }
1017   }
1018
1019   xbt_dynar_free(&radical_elements);
1020   xbt_free(new_suffix);
1021
1022   XBT_DEBUG("</AS>");
1023   sg_platf_new_AS_end();
1024   XBT_DEBUG(" ");
1025   xbt_dict_free(&patterns); // no op if it were never set
1026 }
1027
1028 static void routing_parse_postparse(void) {
1029   xbt_dict_free(&random_value);
1030 }
1031
1032 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1033 {
1034   static int AX_ptr = 0;
1035   char *host_id = NULL;
1036   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
1037
1038   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
1039   static unsigned int surfxml_buffer_stack_stack[1024];
1040
1041   surfxml_buffer_stack_stack[0] = 0;
1042
1043   surfxml_bufferstack_push(1);
1044
1045   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
1046   sg_platf_new_AS_begin(peer->id, "Full");
1047
1048   XBT_DEBUG(" ");
1049   host_id = HOST_PEER(peer->id);
1050   router_id = ROUTER_PEER(peer->id);
1051   link_id_up = LINK_UP_PEER(peer->id);
1052   link_id_down = LINK_DOWN_PEER(peer->id);
1053
1054   link_router = bprintf("%s_link_router", peer->id);
1055   link_backbone = bprintf("%s_backbone", peer->id);
1056
1057   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1058   s_sg_platf_host_cbarg_t host;
1059   memset(&host, 0, sizeof(host));
1060   host.initial_state = SURF_RESOURCE_ON;
1061   host.id = host_id;
1062   host.power_peak = peer->power;
1063   host.power_scale = 1.0;
1064   host.power_trace = peer->availability_trace;
1065   host.state_trace = peer->state_trace;
1066   host.core_amount = 1;
1067   sg_platf_new_host(&host);
1068
1069
1070   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1071   s_sg_platf_router_cbarg_t router;
1072   memset(&router, 0, sizeof(router));
1073   router.id = router_id;
1074   router.coord = peer->coord;
1075   sg_platf_new_router(&router);
1076
1077   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1078             peer->bw_in, peer->lat);
1079   s_sg_platf_link_cbarg_t link;
1080   memset(&link, 0, sizeof(link));
1081   link.state = SURF_RESOURCE_ON;
1082   link.policy = SURF_LINK_SHARED;
1083   link.id = link_id_up;
1084   link.bandwidth = peer->bw_in;
1085   link.latency = peer->lat;
1086   sg_platf_new_link(&link);
1087
1088   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1089   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1090   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1091             peer->bw_out, peer->lat);
1092   link.id = link_id_down;
1093   sg_platf_new_link(&link);
1094
1095   XBT_DEBUG(" ");
1096
1097   // begin here
1098   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1099   XBT_DEBUG("symmetrical=\"NO\">");
1100   SURFXML_BUFFER_SET(route_src, host_id);
1101   SURFXML_BUFFER_SET(route_dst, router_id);
1102   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1103   SURFXML_START_TAG(route);
1104
1105   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1106   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1107   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1108   SURFXML_START_TAG(link_ctn);
1109   SURFXML_END_TAG(link_ctn);
1110
1111   XBT_DEBUG("</route>");
1112   SURFXML_END_TAG(route);
1113
1114   //Opposite Route
1115   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1116   XBT_DEBUG("symmetrical=\"NO\">");
1117   SURFXML_BUFFER_SET(route_src, router_id);
1118   SURFXML_BUFFER_SET(route_dst, host_id);
1119   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1120   SURFXML_START_TAG(route);
1121
1122   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1123   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1124   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1125   SURFXML_START_TAG(link_ctn);
1126   SURFXML_END_TAG(link_ctn);
1127
1128   XBT_DEBUG("</route>");
1129   SURFXML_END_TAG(route);
1130
1131   XBT_DEBUG("</AS>");
1132   sg_platf_new_AS_end();
1133   XBT_DEBUG(" ");
1134
1135   //xbt_dynar_free(&tab_elements_num);
1136   free(host_id);
1137   free(router_id);
1138   free(link_router);
1139   free(link_backbone);
1140   free(link_id_up);
1141   free(link_id_down);
1142   surfxml_bufferstack_pop(1);
1143 }
1144
1145 static void routing_parse_Srandom(void)
1146 {
1147   double mean, std, min, max, seed;
1148   char *random_id = A_surfxml_random_id;
1149   char *random_radical = A_surfxml_random_radical;
1150   char *rd_name = NULL;
1151   char *rd_value;
1152   mean = surf_parse_get_double(A_surfxml_random_mean);
1153   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1154   min = surf_parse_get_double(A_surfxml_random_min);
1155   max = surf_parse_get_double(A_surfxml_random_max);
1156   seed = surf_parse_get_double(A_surfxml_random_seed);
1157
1158   double res = 0;
1159   int i = 0;
1160   random_data_t random = xbt_new0(s_random_data_t, 1);
1161   char *tmpbuf;
1162
1163   xbt_dynar_t radical_elements;
1164   unsigned int iter;
1165   char *groups;
1166   int start, end;
1167   xbt_dynar_t radical_ends;
1168
1169   random->generator = A_surfxml_random_generator;
1170   random->seed = seed;
1171   random->min = min;
1172   random->max = max;
1173
1174   /* Check user stupidities */
1175   if (max < min)
1176     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1177   if (mean < min)
1178     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1179   if (mean > max)
1180     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1181
1182   /* normalize the mean and standard deviation before storing */
1183   random->mean = (mean - min) / (max - min);
1184   random->std = std / (max - min);
1185
1186   if (random->mean * (1 - random->mean) < random->std * random->std)
1187     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1188            random->mean, random->std);
1189
1190   XBT_DEBUG
1191       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1192        random_id, random->min, random->max, random->mean, random->std,
1193        random->generator, random->seed, random_radical);
1194
1195   if (xbt_dict_size(random_value) == 0)
1196     random_value = xbt_dict_new();
1197
1198   if (!strcmp(random_radical, "")) {
1199     res = random_generate(random);
1200     rd_value = bprintf("%f", res);
1201     xbt_dict_set(random_value, random_id, rd_value, free);
1202   } else {
1203     radical_elements = xbt_str_split(random_radical, ",");
1204     xbt_dynar_foreach(radical_elements, iter, groups) {
1205       radical_ends = xbt_str_split(groups, "-");
1206       switch (xbt_dynar_length(radical_ends)) {
1207       case 1:
1208         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1209                    "Custom Random '%s' already exists !", random_id);
1210         res = random_generate(random);
1211         tmpbuf =
1212             bprintf("%s%d", random_id,
1213                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1214         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1215         xbt_free(tmpbuf);
1216         break;
1217
1218       case 2:
1219         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1220         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1221         for (i = start; i <= end; i++) {
1222           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1223                      "Custom Random '%s' already exists !", bprintf("%s%d",
1224                                                                     random_id,
1225                                                                     i));
1226           res = random_generate(random);
1227           tmpbuf = bprintf("%s%d", random_id, i);
1228           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1229           xbt_free(tmpbuf);
1230         }
1231         break;
1232       default:
1233         XBT_INFO("Malformed radical");
1234         break;
1235       }
1236       res = random_generate(random);
1237       rd_name = bprintf("%s_router", random_id);
1238       rd_value = bprintf("%f", res);
1239       xbt_dict_set(random_value, rd_name, rd_value, free);
1240
1241       xbt_dynar_free(&radical_ends);
1242     }
1243     free(rd_name);
1244     xbt_dynar_free(&radical_elements);
1245   }
1246 }
1247
1248 void routing_register_callbacks()
1249 {
1250   sg_platf_host_add_cb(parse_S_host);
1251   sg_platf_router_add_cb(parse_S_router);
1252
1253   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1254
1255   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1256   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1257   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1258                        &routing_parse_S_bypassRoute);
1259
1260   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1261
1262   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1263   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1264   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1265                        &routing_parse_E_bypassRoute);
1266
1267   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1268
1269   sg_platf_peer_add_cb(routing_parse_peer);
1270   sg_platf_postparse_add_cb(routing_parse_postparse);
1271
1272 #ifdef HAVE_TRACING
1273   instr_routing_define_callbacks();
1274 #endif
1275 }