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 patterns = NULL;
  36 static xbt_dict_t random_value = NULL;
  37
  38 /* Global vars */
  39 routing_global_t global_routing = NULL;
  40 routing_component_t current_routing = NULL;
  41 routing_model_description_t current_routing_model = NULL;
  42
  43 /* global parse functions */
  44 xbt_dynar_t link_list = NULL;   /* temporary store of current list link of a route */
  45 static const char *src = NULL;  /* temporary store the source name of a route */
  46 static const char *dst = NULL;  /* temporary store the destination name of a route */
  47 static char *gw_src = NULL;     /* temporary store the gateway source name of a route */
  48 static char *gw_dst = NULL;     /* temporary store the gateway destination name of a route */
  49
  50 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  51
  52 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  53 static void routing_parse_Srandom(void);        /* random bypass */
  54
  55 static char *replace_random_parameter(char *chaine);
  56 static void routing_parse_postparse(void);
  57
  58 /* this lines are only for replace use like index in the model table */
  59 typedef enum {
  60   SURF_MODEL_FULL = 0,
  61   SURF_MODEL_FLOYD,
  62   SURF_MODEL_DIJKSTRA,
  63   SURF_MODEL_DIJKSTRACACHE,
  64   SURF_MODEL_NONE,
  65   SURF_MODEL_RULEBASED,
  66   SURF_MODEL_VIVALDI,
  67   SURF_MODEL_CLUSTER
  68 } e_routing_types;
  69
  70 struct s_model_type routing_models[] = {
  71   {"Full",
  72    "Full routing data (fast, large memory requirements, fully expressive)",
  73    model_full_create, model_full_end},
  74   {"Floyd",
  75    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  76    model_floyd_create, model_floyd_end},
  77   {"Dijkstra",
  78    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  79    model_dijkstra_create, model_dijkstra_both_end},
  80   {"DijkstraCache",
  81    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  82    model_dijkstracache_create, model_dijkstra_both_end},
  83   {"none", "No routing (usable with Constant network only)",
  84    model_none_create,  NULL},
  85   {"RuleBased", "Rule-Based routing data (...)",
  86    model_rulebased_create, NULL},
  87   {"Vivaldi", "Vivaldi routing",
  88    model_vivaldi_create, NULL},
  89   {"Cluster", "Cluster routing",
  90    model_cluster_create, NULL},
  91   {NULL, NULL, NULL, NULL}
  92 };
  93
  94 /**
  95  * \brief Add a "host" to the network element list
  96  */
  97 static void parse_S_host(sg_platf_host_cbarg_t host)
  98 {
  99   network_element_info_t info = NULL;
 100   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 101     current_routing->hierarchy = SURF_ROUTING_BASE;
 102   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 103              "Reading a host, processing unit \"%s\" already exists", host->id);
 104
 105   (*(current_routing->parse_PU)) (current_routing, host->id);
 106   info = xbt_new0(s_network_element_info_t, 1);
 107   info->rc_component = current_routing;
 108   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 109   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 110   if (host->coord && strcmp(host->coord, "")) {
 111     if (!COORD_HOST_LEVEL)
 112       xbt_die
 113           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 114     xbt_dynar_t ctn = xbt_str_split_str(host->coord, " ");
 115     xbt_dynar_shrink(ctn, 0);
 116     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 117   }
 118 }
 119
 120 /**
 121  * \brief Add a "router" to the network element list
 122  */
 123 static void parse_S_router(sg_platf_router_cbarg_t router)
 124 {
 125   network_element_info_t info = NULL;
 126   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 127     current_routing->hierarchy = SURF_ROUTING_BASE;
 128   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 129              "Reading a router, processing unit \"%s\" already exists",
 130              router->id);
 131
 132   (*(current_routing->parse_PU)) (current_routing, router->id);
 133   info = xbt_new0(s_network_element_info_t, 1);
 134   info->rc_component = current_routing;
 135   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 136
 137   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 138   if (strcmp(router->coord, "")) {
 139     if (!COORD_ASR_LEVEL)
 140       xbt_die
 141           ("To use coordinates, you must set configuration 'coordinates' to 'yes'");
 142     xbt_dynar_t ctn = xbt_str_split_str(router->coord, " ");
 143     xbt_dynar_shrink(ctn, 0);
 144     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 145   }
 146 }
 147
 148
 149 /**
 150  * \brief Set the end points for a route
 151  */
 152 static void routing_parse_S_route(void)
 153 {
 154   if (src != NULL && dst != NULL && link_list != NULL)
 155     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 156            A_surfxml_route_src, A_surfxml_route_dst);
 157   src = A_surfxml_route_src;
 158   dst = A_surfxml_route_dst;
 159   xbt_assert(strlen(src) > 0 || strlen(dst) > 0,
 160              "Some limits are null in the route between \"%s\" and \"%s\"",
 161              src, dst);
 162   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 163 }
 164
 165 /**
 166  * \brief Set the end points and gateways for a ASroute
 167  */
 168 static void routing_parse_S_ASroute(void)
 169 {
 170   if (src != NULL && dst != NULL && link_list != NULL)
 171     THROWF(arg_error, 0, "Route between %s to %s can not be defined",
 172            A_surfxml_ASroute_src, A_surfxml_ASroute_dst);
 173   src = A_surfxml_ASroute_src;
 174   dst = A_surfxml_ASroute_dst;
 175   gw_src = A_surfxml_ASroute_gw_src;
 176   gw_dst = A_surfxml_ASroute_gw_dst;
 177   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 178              || strlen(gw_dst) > 0,
 179              "Some limits are null in the route between \"%s\" and \"%s\"",
 180              src, dst);
 181   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 182 }
 183
 184 /**
 185  * \brief Set the end points for a bypassRoute
 186  */
 187 static void routing_parse_S_bypassRoute(void)
 188 {
 189   if (src != NULL && dst != NULL && link_list != NULL)
 190     THROWF(arg_error, 0,
 191            "Bypass Route between %s to %s can not be defined",
 192            A_surfxml_bypassRoute_src, A_surfxml_bypassRoute_dst);
 193   src = A_surfxml_bypassRoute_src;
 194   dst = A_surfxml_bypassRoute_dst;
 195   gw_src = A_surfxml_bypassRoute_gw_src;
 196   gw_dst = A_surfxml_bypassRoute_gw_dst;
 197   xbt_assert(strlen(src) > 0 || strlen(dst) > 0 || strlen(gw_src) > 0
 198              || strlen(gw_dst) > 0,
 199              "Some limits are null in the route between \"%s\" and \"%s\"",
 200              src, dst);
 201   link_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 202 }
 203
 204 /**
 205  * \brief Set a new link on the actual list of link for a route or ASroute from XML
 206  */
 207
 208 static void routing_parse_link_ctn(void)
 209 {
 210   char *link_id;
 211   switch (A_surfxml_link_ctn_direction) {
 212   case AU_surfxml_link_ctn_direction:
 213   case A_surfxml_link_ctn_direction_NONE:
 214     link_id = xbt_strdup(A_surfxml_link_ctn_id);
 215     break;
 216   case A_surfxml_link_ctn_direction_UP:
 217     link_id = bprintf("%s_UP", A_surfxml_link_ctn_id);
 218     break;
 219   case A_surfxml_link_ctn_direction_DOWN:
 220     link_id = bprintf("%s_DOWN", A_surfxml_link_ctn_id);
 221     break;
 222   }
 223   xbt_dynar_push(link_list, &link_id);
 224 }
 225
 226 /**
 227  * \brief Store the route by calling the set_route function of the current routing component
 228  */
 229 static void routing_parse_E_route(void)
 230 {
 231   route_extended_t route = xbt_new0(s_route_extended_t, 1);
 232   route->generic_route.link_list = link_list;
 233   xbt_assert(current_routing->parse_route,
 234              "no defined method \"set_route\" in \"%s\"",
 235              current_routing->name);
 236   (*(current_routing->parse_route)) (current_routing, src, dst, route);
 237   link_list = NULL;
 238   src = NULL;
 239   dst = NULL;
 240 }
 241
 242 /**
 243  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 244  */
 245 static void routing_parse_E_ASroute(void)
 246 {
 247   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 248   e_route->generic_route.link_list = link_list;
 249   e_route->src_gateway = xbt_strdup(gw_src);
 250   e_route->dst_gateway = xbt_strdup(gw_dst);
 251   xbt_assert(current_routing->parse_ASroute,
 252              "no defined method \"set_ASroute\" in \"%s\"",
 253              current_routing->name);
 254   (*(current_routing->parse_ASroute)) (current_routing, src, dst, e_route);
 255   link_list = NULL;
 256   src = NULL;
 257   dst = NULL;
 258   gw_src = NULL;
 259   gw_dst = NULL;
 260 }
 261
 262 /**
 263  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 264  */
 265 static void routing_parse_E_bypassRoute(void)
 266 {
 267   route_extended_t e_route = xbt_new0(s_route_extended_t, 1);
 268   e_route->generic_route.link_list = link_list;
 269   e_route->src_gateway = xbt_strdup(gw_src);
 270   e_route->dst_gateway = xbt_strdup(gw_dst);
 271   xbt_assert(current_routing->parse_bypassroute,
 272              "Bypassing mechanism not implemented by routing '%s'",
 273              current_routing->name);
 274   (*(current_routing->parse_bypassroute)) (current_routing, src, dst, e_route);
 275   link_list = NULL;
 276   src = NULL;
 277   dst = NULL;
 278   gw_src = NULL;
 279   gw_dst = NULL;
 280 }
 281
 282 /**
 283  * \brief Make a new routing component to the platform
 284  *
 285  * Add a new autonomous system to the platform. Any elements (such as host,
 286  * router or sub-AS) added after this call and before the corresponding call
 287  * to sg_platf_new_AS_close() will be added to this AS.
 288  *
 289  * Once this function was called, the configuration concerning the used
 290  * models cannot be changed anymore.
 291  *
 292  * @param AS_id name of this autonomous system. Must be unique in the platform
 293  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 294  */
 295 void routing_AS_begin(const char *AS_id, const char *wanted_routing_type)
 296 {
 297   routing_component_t new_routing;
 298   routing_model_description_t model = NULL;
 299   int cpt;
 300
 301   /* search the routing model */
 302   for (cpt = 0; routing_models[cpt].name; cpt++)
 303     if (!strcmp(wanted_routing_type, routing_models[cpt].name))
 304       model = &routing_models[cpt];
 305   /* if its not exist, error */
 306   if (model == NULL) {
 307     fprintf(stderr, "Routing model %s not found. Existing models:\n",
 308             wanted_routing_type);
 309     for (cpt = 0; routing_models[cpt].name; cpt++)
 310       fprintf(stderr, "   %s: %s\n", routing_models[cpt].name,
 311               routing_models[cpt].desc);
 312     xbt_die(NULL);
 313   }
 314
 315   /* make a new routing component */
 316   new_routing = (routing_component_t) (*(model->create)) ();
 317   new_routing->routing = model;
 318   new_routing->hierarchy = SURF_ROUTING_NULL;
 319   new_routing->name = xbt_strdup(AS_id);
 320   new_routing->routing_sons = xbt_dict_new();
 321
 322   if (current_routing == NULL && global_routing->root == NULL) {
 323
 324     /* it is the first one */
 325     new_routing->routing_father = NULL;
 326     global_routing->root = new_routing;
 327
 328   } else if (current_routing != NULL && global_routing->root != NULL) {
 329
 330     xbt_assert(!xbt_dict_get_or_null
 331                (current_routing->routing_sons, AS_id),
 332                "The AS \"%s\" already exists", AS_id);
 333     /* it is a part of the tree */
 334     new_routing->routing_father = current_routing;
 335     /* set the father behavior */
 336     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 337       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 338     /* add to the sons dictionary */
 339     xbt_dict_set(current_routing->routing_sons, AS_id,
 340                  (void *) new_routing, NULL);
 341     /* add to the father element list */
 342     (*(current_routing->parse_AS)) (current_routing, AS_id);
 343   } else {
 344     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 345   }
 346   /* set the new current component of the tree */
 347   current_routing = new_routing;
 348 }
 349
 350 /**
 351  * \brief Specify that the current description of AS is finished
 352  *
 353  * Once you've declared all the content of your AS, you have to close
 354  * it with this call. Your AS is not usable until you call this function.
 355  *
 356  * @fixme: this call is not as robust as wanted: bad things WILL happen
 357  * if you call it twice for the same AS, or if you forget calling it, or
 358  * even if you add stuff to a closed AS
 359  *
 360  */
 361 void routing_AS_end()
 362 {
 363
 364   if (current_routing == NULL) {
 365     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 366   } else {
 367     network_element_info_t info = NULL;
 368     xbt_assert(!xbt_lib_get_or_null
 369                (as_router_lib, current_routing->name, ROUTING_ASR_LEVEL),
 370                "The AS \"%s\" already exists", current_routing->name);
 371     info = xbt_new0(s_network_element_info_t, 1);
 372     info->rc_component = current_routing->routing_father;
 373     info->rc_type = SURF_NETWORK_ELEMENT_AS;
 374     xbt_lib_set(as_router_lib, current_routing->name, ROUTING_ASR_LEVEL,
 375                 (void *) info);
 376
 377     if (current_routing->routing->end)
 378       (*(current_routing->routing->end)) ();
 379     current_routing = current_routing->routing_father;
 380   }
 381 }
 382
 383 /* Aux Business methods */
 384
 385 /**
 386  * \brief Get the AS father and the first elements of the chain
 387  *
 388  * \param src the source host name
 389  * \param dst the destination host name
 390  *
 391  * Get the common father of the to processing units, and the first different
 392  * father in the chain
 393  */
 394 static void elements_father(const char *src, const char *dst,
 395                             routing_component_t * res_father,
 396                             routing_component_t * res_src,
 397                             routing_component_t * res_dst)
 398 {
 399   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 400 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 401   routing_component_t src_as, dst_as;
 402   routing_component_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 403   routing_component_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 404   int index_src = 0;
 405   int index_dst = 0;
 406   routing_component_t current;
 407   routing_component_t current_src;
 408   routing_component_t current_dst;
 409   routing_component_t father;
 410
 411   /* (1) find the as where the src and dst are located */
 412   network_element_info_t src_data = xbt_lib_get_or_null(host_lib, src,
 413                                                         ROUTING_HOST_LEVEL);
 414   network_element_info_t dst_data = xbt_lib_get_or_null(host_lib, dst,
 415                                                         ROUTING_HOST_LEVEL);
 416   if (!src_data)
 417     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 418   if (!dst_data)
 419     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 420   src_as = src_data->rc_component;
 421   dst_as = dst_data->rc_component;
 422
 423   xbt_assert(src_as && dst_as,
 424              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src, dst);
 425
 426   /* (2) find the path to the root routing component */
 427   for (current = src_as; current != NULL; current = current->routing_father) {
 428     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 429       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 430     path_src[index_src++] = current;
 431   }
 432   for (current = dst_as; current != NULL; current = current->routing_father) {
 433     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 434       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 435     path_dst[index_dst++] = current;
 436   }
 437
 438   /* (3) find the common father */
 439   do {
 440     current_src = path_src[--index_src];
 441     current_dst = path_dst[--index_dst];
 442   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 443
 444   /* (4) they are not in the same routing component, make the path */
 445   if (current_src == current_dst)
 446     father = current_src;
 447   else
 448     father = path_src[index_src + 1];
 449
 450   /* (5) result generation */
 451   *res_father = father;         /* first the common father of src and dst */
 452   *res_src = current_src;       /* second the first different father of src */
 453   *res_dst = current_dst;       /* three  the first different father of dst */
 454
 455 #undef ELEMENTS_FATHER_MAXDEPTH
 456 }
 457
 458 /* Global Business methods */
 459
 460 /**
 461  * \brief Recursive function for get_route_latency
 462  *
 463  * \param src the source host name
 464  * \param dst the destination host name
 465  * \param *e_route the route where the links are stored
 466  * \param *latency the latency, if needed
 467  *
 468  * This function is called by "get_route" and "get_latency". It allows to walk
 469  * recursively through the routing components tree.
 470  */
 471 static void _get_route_latency(const char *src, const char *dst,
 472                                xbt_dynar_t * route, double *latency)
 473 {
 474   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src, dst);
 475   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 476
 477   routing_component_t common_father;
 478   routing_component_t src_father;
 479   routing_component_t dst_father;
 480   elements_father(src, dst, &common_father, &src_father, &dst_father);
 481
 482   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 483
 484     route_extended_t e_route = NULL;
 485     if (route) {
 486       e_route = common_father->get_route(common_father, src, dst);
 487       xbt_assert(e_route, "no route between \"%s\" and \"%s\"", src, dst);
 488       *route = e_route->generic_route.link_list;
 489     }
 490     if (latency) {
 491       *latency = common_father->get_latency(common_father, src, dst, e_route);
 492       xbt_assert(*latency >= 0.0,
 493                  "latency error on route between \"%s\" and \"%s\"", src, dst);
 494     }
 495     if (e_route) {
 496       xbt_free(e_route->src_gateway);
 497       xbt_free(e_route->dst_gateway);
 498       xbt_free(e_route);
 499     }
 500
 501   } else {                      /* SURF_ROUTING_RECURSIVE */
 502
 503     route_extended_t e_route_bypass = NULL;
 504     if (common_father->get_bypass_route)
 505       e_route_bypass = common_father->get_bypass_route(common_father, src, dst);
 506
 507     xbt_assert(!latency || !e_route_bypass,
 508                "Bypass cannot work yet with get_latency");
 509
 510     route_extended_t e_route_cnt = e_route_bypass
 511         ? e_route_bypass : common_father->get_route(common_father,
 512                                                     src_father->name,
 513                                                     dst_father->name);
 514
 515     xbt_assert(e_route_cnt, "no route between \"%s\" and \"%s\"",
 516                src_father->name, dst_father->name);
 517
 518     xbt_assert((e_route_cnt->src_gateway == NULL) ==
 519                (e_route_cnt->dst_gateway == NULL),
 520                "bad gateway for route between \"%s\" and \"%s\"", src, dst);
 521
 522     if (route) {
 523       *route = xbt_dynar_new(global_routing->size_of_link, NULL);
 524     }
 525     if (latency) {
 526       *latency = common_father->get_latency(common_father,
 527                                             src_father->name, dst_father->name,
 528                                             e_route_cnt);
 529       xbt_assert(*latency >= 0.0,
 530                  "latency error on route between \"%s\" and \"%s\"",
 531                  src_father->name, dst_father->name);
 532     }
 533
 534     void *link;
 535     unsigned int cpt;
 536
 537     if (strcmp(src, e_route_cnt->src_gateway)) {
 538       double latency_src;
 539       xbt_dynar_t route_src;
 540
 541       _get_route_latency(src, e_route_cnt->src_gateway,
 542                          (route ? &route_src : NULL),
 543                          (latency ? &latency_src : NULL));
 544       if (route) {
 545         xbt_assert(route_src, "no route between \"%s\" and \"%s\"",
 546                    src, e_route_cnt->src_gateway);
 547         xbt_dynar_foreach(route_src, cpt, link) {
 548           xbt_dynar_push(*route, &link);
 549         }
 550         xbt_dynar_free(&route_src);
 551       }
 552       if (latency) {
 553         xbt_assert(latency_src >= 0.0,
 554                    "latency error on route between \"%s\" and \"%s\"",
 555                    src, e_route_cnt->src_gateway);
 556         *latency += latency_src;
 557       }
 558     }
 559
 560     if (route) {
 561       xbt_dynar_foreach(e_route_cnt->generic_route.link_list, cpt, link) {
 562         xbt_dynar_push(*route, &link);
 563       }
 564     }
 565
 566     if (strcmp(e_route_cnt->dst_gateway, dst)) {
 567       double latency_dst;
 568       xbt_dynar_t route_dst;
 569
 570       _get_route_latency(e_route_cnt->dst_gateway, dst,
 571                          (route ? &route_dst : NULL),
 572                          (latency ? &latency_dst : NULL));
 573       if (route) {
 574         xbt_assert(route_dst, "no route between \"%s\" and \"%s\"",
 575                    e_route_cnt->dst_gateway, dst);
 576         xbt_dynar_foreach(route_dst, cpt, link) {
 577           xbt_dynar_push(*route, &link);
 578         }
 579         xbt_dynar_free(&route_dst);
 580       }
 581       if (latency) {
 582         xbt_assert(latency_dst >= 0.0,
 583                    "latency error on route between \"%s\" and \"%s\"",
 584                    e_route_cnt->dst_gateway, dst);
 585         *latency += latency_dst;
 586       }
 587     }
 588
 589     generic_free_extended_route(e_route_cnt);
 590   }
 591 }
 592
 593 /**
 594  * \brief Generic function for get_route, get_route_no_cleanup, and get_latency
 595  */
 596 static void get_route_latency(const char *src, const char *dst,
 597                               xbt_dynar_t * route, double *latency, int cleanup)
 598 {
 599   _get_route_latency(src, dst, route, latency);
 600   xbt_assert(!route || *route, "no route between \"%s\" and \"%s\"", src, dst);
 601   xbt_assert(!latency || *latency >= 0.0,
 602              "latency error on route between \"%s\" and \"%s\"", src, dst);
 603   if (route) {
 604     xbt_dynar_free(&global_routing->last_route);
 605     global_routing->last_route = cleanup ? *route : NULL;
 606   }
 607 }
 608
 609 /**
 610  * \brief Generic method: find a route between hosts
 611  *
 612  * \param src the source host name
 613  * \param dst the destination host name
 614  *
 615  * walk through the routing components tree and find a route between hosts
 616  * by calling the differents "get_route" functions in each routing component.
 617  * No need to free the returned dynar. It will be freed at the next call.
 618  */
 619 static xbt_dynar_t get_route(const char *src, const char *dst)
 620 {
 621   xbt_dynar_t route = NULL;
 622   get_route_latency(src, dst, &route, NULL, 1);
 623   return route;
 624 }
 625
 626 /**
 627  * \brief Generic method: find a route between hosts
 628  *
 629  * \param src the source host name
 630  * \param dst the destination host name
 631  *
 632  * same as get_route, but return NULL if any exception is raised.
 633  */
 634 static xbt_dynar_t get_route_or_null(const char *src, const char *dst)
 635 {
 636   xbt_dynar_t route = NULL;
 637   xbt_ex_t exception;
 638   TRY {
 639     get_route_latency(src, dst, &route, NULL, 1);
 640   } CATCH(exception) {
 641     xbt_ex_free(exception);
 642     return NULL;
 643   }
 644   return route;
 645 }
 646
 647 /**
 648  * \brief Generic method: find a route between hosts
 649  *
 650  * \param src the source host name
 651  * \param dst the destination host name
 652  *
 653  * walk through the routing components tree and find a route between hosts
 654  * by calling the differents "get_route" functions in each routing component.
 655  * Leaves the caller the responsability to clean the returned dynar.
 656  */
 657 static xbt_dynar_t get_route_no_cleanup(const char *src, const char *dst)
 658 {
 659   xbt_dynar_t route = NULL;
 660   get_route_latency(src, dst, &route, NULL, 0);
 661   return route;
 662 }
 663
 664 /*Get Latency*/
 665 static double get_latency(const char *src, const char *dst)
 666 {
 667   double latency = -1.0;
 668   get_route_latency(src, dst, NULL, &latency, 0);
 669   return latency;
 670 }
 671
 672 /**
 673  * \brief Recursive function for finalize
 674  *
 675  * \param rc the source host name
 676  *
 677  * This fuction is call by "finalize". It allow to finalize the
 678  * AS or routing components. It delete all the structures.
 679  */
 680 static void _finalize(routing_component_t rc)
 681 {
 682   if (rc) {
 683     xbt_dict_cursor_t cursor = NULL;
 684     char *key;
 685     routing_component_t elem;
 686     xbt_dict_foreach(rc->routing_sons, cursor, key, elem) {
 687       _finalize(elem);
 688     }
 689     xbt_dict_t tmp_sons = rc->routing_sons;
 690     char *tmp_name = rc->name;
 691     xbt_dict_free(&tmp_sons);
 692     xbt_free(tmp_name);
 693     xbt_assert(rc->finalize, "no defined method \"finalize\" in \"%s\"",
 694                current_routing->name);
 695     (*(rc->finalize)) (rc);
 696   }
 697 }
 698
 699 /**
 700  * \brief Generic method: delete all the routing structures
 701  *
 702  * walk through the routing components tree and delete the structures
 703  * by calling the different "finalize" functions in each routing component
 704  */
 705 static void finalize(void)
 706 {
 707   /* delete recursively all the tree */
 708   _finalize(global_routing->root);
 709   /* delete last_route */
 710   xbt_dynar_free(&(global_routing->last_route));
 711   /* delete global routing structure */
 712   xbt_free(global_routing);
 713 }
 714
 715 static xbt_dynar_t recursive_get_onelink_routes(routing_component_t rc)
 716 {
 717   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 718
 719   //adding my one link routes
 720   unsigned int cpt;
 721   void *link;
 722   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 723   if (onelink_mine) {
 724     xbt_dynar_foreach(onelink_mine, cpt, link) {
 725       xbt_dynar_push(ret, &link);
 726     }
 727   }
 728   //recursing
 729   char *key;
 730   xbt_dict_cursor_t cursor = NULL;
 731   routing_component_t rc_child;
 732   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 733     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 734     if (onelink_child) {
 735       xbt_dynar_foreach(onelink_child, cpt, link) {
 736         xbt_dynar_push(ret, &link);
 737       }
 738     }
 739   }
 740   return ret;
 741 }
 742
 743 static xbt_dynar_t get_onelink_routes(void)
 744 {
 745   return recursive_get_onelink_routes(global_routing->root);
 746 }
 747
 748 e_surf_network_element_type_t get_network_element_type(const char *name)
 749 {
 750   network_element_info_t rc = NULL;
 751
 752   rc = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
 753   if (rc)
 754     return rc->rc_type;
 755
 756   rc = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
 757   if (rc)
 758     return rc->rc_type;
 759
 760   return SURF_NETWORK_ELEMENT_NULL;
 761 }
 762
 763 /**
 764  * \brief Generic method: create the global routing schema
 765  *
 766  * Make a global routing structure and set all the parsing functions.
 767  */
 768 void routing_model_create(size_t size_of_links, void *loopback)
 769 {
 770   /* config the uniq global routing */
 771   global_routing = xbt_new0(s_routing_global_t, 1);
 772   global_routing->root = NULL;
 773   global_routing->get_route = get_route;
 774   global_routing->get_route_or_null = get_route_or_null;
 775   global_routing->get_latency = get_latency;
 776   global_routing->get_route_no_cleanup = get_route_no_cleanup;
 777   global_routing->get_onelink_routes = get_onelink_routes;
 778   global_routing->get_route_latency = get_route_latency;
 779   global_routing->get_network_element_type = get_network_element_type;
 780   global_routing->finalize = finalize;
 781   global_routing->loopback = loopback;
 782   global_routing->size_of_link = size_of_links;
 783   global_routing->last_route = NULL;
 784   /* no current routing at moment */
 785   current_routing = NULL;
 786 }
 787
 788
 789 /* ************************************************** */
 790 /* ********** PATERN FOR NEW ROUTING **************** */
 791
 792 /* The minimal configuration of a new routing model need the next functions,
 793  * also you need to set at the start of the file, the new model in the model
 794  * list. Remember keep the null ending of the list.
 795  */
 796 /*** Routing model structure ***/
 797 // typedef struct {
 798 //   s_routing_component_t generic_routing;
 799 //   /* things that your routing model need */
 800 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 801
 802 /*** Parse routing model functions ***/
 803 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 804 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 805 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 806 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 807 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 808
 809 /*** Business methods ***/
 810 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 811 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 812 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 813
 814 /*** Creation routing model functions ***/
 815 // static void* model_NEW_create(void) {
 816 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 817 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 818 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 819 //   new_component->generic_routing.set_route = model_NEW_set_route;
 820 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 821 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 822 //   new_component->generic_routing.get_route = NEW_get_route;
 823 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 824 //   new_component->generic_routing.finalize = NEW_finalize;
 825 //   /* initialization of internal structures */
 826 //   return new_component;
 827 // } /* mandatory */
 828 // static void  model_NEW_load(void) {}   /* mandatory */
 829 // static void  model_NEW_unload(void) {} /* mandatory */
 830 // static void  model_NEW_end(void) {}    /* mandatory */
 831
 832 /* ************************************************************************** */
 833 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 834
 835
 836 static void routing_parse_cluster(void)
 837 {
 838   char *host_id, *groups, *link_id = NULL;
 839
 840   s_sg_platf_host_cbarg_t host;
 841   s_sg_platf_link_cbarg_t link;
 842
 843   if (strcmp(struct_cluster->availability_trace, "")
 844       || strcmp(struct_cluster->state_trace, "")) {
 845     if (xbt_dict_size(patterns) == 0)
 846       patterns = xbt_dict_new();
 847     xbt_dict_set(patterns, "id", xbt_strdup(struct_cluster->id), free);
 848     xbt_dict_set(patterns, "prefix", xbt_strdup(struct_cluster->prefix), free);
 849     xbt_dict_set(patterns, "suffix", xbt_strdup(struct_cluster->suffix), free);
 850   }
 851
 852   unsigned int iter;
 853   int start, end, i;
 854   xbt_dynar_t radical_elements;
 855   xbt_dynar_t radical_ends;
 856
 857   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", struct_cluster->id);
 858   sg_platf_new_AS_begin(struct_cluster->id, "Cluster");
 859
 860   //Make all hosts
 861   radical_elements = xbt_str_split(struct_cluster->radical, ",");
 862   xbt_dynar_foreach(radical_elements, iter, groups) {
 863     memset(&host, 0, sizeof(host));
 864
 865     radical_ends = xbt_str_split(groups, "-");
 866     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 867
 868     switch (xbt_dynar_length(radical_ends)) {
 869     case 1:
 870       end = start;
 871       break;
 872     case 2:
 873       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 874       break;
 875     default:
 876       surf_parse_error("Malformed radical");
 877       break;
 878     }
 879     for (i = start; i <= end; i++) {
 880       host_id =
 881           bprintf("%s%d%s", struct_cluster->prefix, i, struct_cluster->suffix);
 882       link_id = bprintf("%s_link_%d", struct_cluster->id, i);
 883
 884       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id,
 885                 struct_cluster->power);
 886       host.id = host_id;
 887       if (strcmp(struct_cluster->availability_trace, "")) {
 888         xbt_dict_set(patterns, "radical", bprintf("%d", i), xbt_free);
 889         char *tmp_availability_file =
 890             xbt_strdup(struct_cluster->availability_trace);
 891         xbt_str_varsubst(tmp_availability_file, patterns);
 892         XBT_DEBUG("\tavailability_file=\"%s\"", tmp_availability_file);
 893         host.power_trace = tmgr_trace_new(tmp_availability_file);
 894         xbt_free(tmp_availability_file);
 895       } else {
 896         XBT_DEBUG("\tavailability_file=\"\"");
 897       }
 898       if (strcmp(struct_cluster->state_trace, "")) {
 899         char *tmp_state_file = xbt_strdup(struct_cluster->state_trace);
 900         xbt_str_varsubst(tmp_state_file, patterns);
 901         XBT_DEBUG("\tstate_file=\"%s\"", tmp_state_file);
 902         host.state_trace = tmgr_trace_new(tmp_state_file);
 903         xbt_free(tmp_state_file);
 904       } else {
 905         XBT_DEBUG("\tstate_file=\"\"");
 906       }
 907
 908       host.power_peak = struct_cluster->power;
 909       host.power_scale = 1.0;
 910       host.core_amount = struct_cluster->core_amount;
 911       host.initial_state = SURF_RESOURCE_ON;
 912       host.coord = "";
 913       sg_platf_new_host(&host);
 914       XBT_DEBUG("</host>");
 915
 916       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 917                 struct_cluster->bw, struct_cluster->lat);
 918
 919       memset(&link, 0, sizeof(link));
 920       link.id = link_id;
 921       link.bandwidth = struct_cluster->bw;
 922       link.latency = struct_cluster->lat;
 923       link.state = SURF_RESOURCE_ON;
 924
 925       switch (struct_cluster->sharing_policy) {
 926       case A_surfxml_cluster_sharing_policy_SHARED:
 927         link.policy = SURF_LINK_SHARED;
 928         break;
 929       case A_surfxml_cluster_sharing_policy_FULLDUPLEX:
 930         link.policy = SURF_LINK_FULLDUPLEX;
 931         break;
 932       case A_surfxml_cluster_sharing_policy_FATPIPE:
 933         link.policy = SURF_LINK_FATPIPE;
 934         break;
 935       default:
 936         surf_parse_error(bprintf
 937                          ("Invalid cluster sharing policy for cluster %s",
 938                           struct_cluster->id));
 939         break;
 940       }
 941       sg_platf_new_link(&link);
 942
 943       surf_parsing_link_up_down_t info =
 944           xbt_new0(s_surf_parsing_link_up_down_t, 1);
 945       if (link.policy == SURF_LINK_FULLDUPLEX) {
 946         char *tmp_link = bprintf("%s_UP", link_id);
 947         info->link_up =
 948             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 949         free(tmp_link);
 950         tmp_link = bprintf("%s_DOWN", link_id);
 951         info->link_down =
 952             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 953         free(tmp_link);
 954       } else {
 955         info->link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 956         info->link_down = info->link_up;
 957       }
 958       surf_routing_cluster_add_link(host_id, info);
 959
 960       xbt_free(link_id);
 961       xbt_free(host_id);
 962     }
 963
 964     xbt_dynar_free(&radical_ends);
 965   }
 966   xbt_dynar_free(&radical_elements);
 967
 968   // 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
 969   XBT_DEBUG(" ");
 970   XBT_DEBUG("<router id=\"%s\"/>", struct_cluster->router_id);
 971   s_sg_platf_router_cbarg_t router;
 972   char *newid = NULL;
 973   memset(&router, 0, sizeof(router));
 974   router.id = struct_cluster->router_id;
 975   router.coord = "";
 976   if (!router.id || !strcmp(router.id, ""))
 977     router.id = newid =
 978         bprintf("%s%s_router%s", struct_cluster->prefix, struct_cluster->id,
 979                 struct_cluster->suffix);
 980   sg_platf_new_router(&router);
 981   free(newid);
 982
 983   //Make the backbone
 984   if ((struct_cluster->bb_bw != 0) && (struct_cluster->bb_lat != 0)) {
 985     char *link_backbone = bprintf("%s_backbone", struct_cluster->id);
 986     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 987               struct_cluster->bb_bw, struct_cluster->bb_lat);
 988
 989     memset(&link, 0, sizeof(link));
 990     link.id = link_backbone;
 991     link.bandwidth = struct_cluster->bb_bw;
 992     link.latency = struct_cluster->bb_lat;
 993     link.state = SURF_RESOURCE_ON;
 994
 995     switch (struct_cluster->bb_sharing_policy) {
 996     case A_surfxml_cluster_bb_sharing_policy_FATPIPE:
 997       link.policy = SURF_LINK_FATPIPE;
 998       break;
 999     case A_surfxml_cluster_bb_sharing_policy_SHARED:
1000       link.policy = SURF_LINK_SHARED;
1001       break;
1002     default:
1003       surf_parse_error(bprintf
1004                        ("Invalid bb sharing policy in cluster %s",
1005                         struct_cluster->id));
1006       break;
1007     }
1008
1009     sg_platf_new_link(&link);
1010
1011     surf_parsing_link_up_down_t info =
1012         xbt_new0(s_surf_parsing_link_up_down_t, 1);
1013     info->link_up =
1014         xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL);
1015     info->link_down = info->link_up;
1016     surf_routing_cluster_add_link(struct_cluster->id, info);
1017
1018     free(link_backbone);
1019   }
1020
1021   XBT_DEBUG(" ");
1022
1023   char *new_suffix = xbt_strdup("");
1024
1025   radical_elements = xbt_str_split(struct_cluster->suffix, ".");
1026   xbt_dynar_foreach(radical_elements, iter, groups) {
1027     if (strcmp(groups, "")) {
1028       char *old_suffix = new_suffix;
1029       new_suffix = bprintf("%s\\.%s", old_suffix, groups);
1030       free(old_suffix);
1031     }
1032   }
1033
1034   xbt_dynar_free(&radical_elements);
1035   xbt_free(new_suffix);
1036
1037   if (strcmp(struct_cluster->availability_trace, "")
1038       || strcmp(struct_cluster->state_trace, ""))
1039     xbt_dict_free(&patterns);
1040
1041   XBT_DEBUG("</AS>");
1042   sg_platf_new_AS_end();
1043   XBT_DEBUG(" ");
1044 }
1045
1046 static void routing_parse_postparse(void)
1047 {
1048   xbt_dict_free(&random_value);
1049   xbt_dict_free(&patterns);
1050 }
1051
1052 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1053 {
1054   static int AX_ptr = 0;
1055   char *host_id = NULL;
1056   char *router_id, *link_router, *link_backbone, *link_id_up, *link_id_down;
1057
1058   static unsigned int surfxml_buffer_stack_stack_ptr = 1;
1059   static unsigned int surfxml_buffer_stack_stack[1024];
1060
1061   surfxml_buffer_stack_stack[0] = 0;
1062
1063   surfxml_bufferstack_push(1);
1064
1065   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Full\">", peer->id);
1066   sg_platf_new_AS_begin(peer->id, "Full");
1067
1068   XBT_DEBUG(" ");
1069   host_id = HOST_PEER(peer->id);
1070   router_id = ROUTER_PEER(peer->id);
1071   link_id_up = LINK_UP_PEER(peer->id);
1072   link_id_down = LINK_DOWN_PEER(peer->id);
1073
1074   link_router = bprintf("%s_link_router", peer->id);
1075   link_backbone = bprintf("%s_backbone", peer->id);
1076
1077   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1078   s_sg_platf_host_cbarg_t host;
1079   memset(&host, 0, sizeof(host));
1080   host.initial_state = SURF_RESOURCE_ON;
1081   host.id = host_id;
1082   host.power_peak = peer->power;
1083   host.power_scale = 1.0;
1084   host.power_trace = peer->availability_trace;
1085   host.state_trace = peer->state_trace;
1086   host.core_amount = 1;
1087   sg_platf_new_host(&host);
1088
1089
1090   XBT_DEBUG("<router id=\"%s\"\tcoordinates=\"%s\"/>", router_id, peer->coord);
1091   s_sg_platf_router_cbarg_t router;
1092   memset(&router, 0, sizeof(router));
1093   router.id = router_id;
1094   router.coord = peer->coord;
1095   sg_platf_new_router(&router);
1096
1097   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_up,
1098             peer->bw_in, peer->lat);
1099   s_sg_platf_link_cbarg_t link;
1100   memset(&link, 0, sizeof(link));
1101   link.state = SURF_RESOURCE_ON;
1102   link.policy = SURF_LINK_SHARED;
1103   link.id = link_id_up;
1104   link.bandwidth = peer->bw_in;
1105   link.latency = peer->lat;
1106   sg_platf_new_link(&link);
1107
1108   // FIXME: dealing with full duplex is not the role of this piece of code, I'd say [Mt]
1109   // Instead, it should be created fullduplex, and the models will do what's needed in this case
1110   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id_down,
1111             peer->bw_out, peer->lat);
1112   link.id = link_id_down;
1113   sg_platf_new_link(&link);
1114
1115   XBT_DEBUG(" ");
1116
1117   // begin here
1118   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", host_id, router_id);
1119   XBT_DEBUG("symmetrical=\"NO\">");
1120   SURFXML_BUFFER_SET(route_src, host_id);
1121   SURFXML_BUFFER_SET(route_dst, router_id);
1122   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1123   SURFXML_START_TAG(route);
1124
1125   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_up);
1126   SURFXML_BUFFER_SET(link_ctn_id, link_id_up);
1127   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1128   SURFXML_START_TAG(link_ctn);
1129   SURFXML_END_TAG(link_ctn);
1130
1131   XBT_DEBUG("</route>");
1132   SURFXML_END_TAG(route);
1133
1134   //Opposite Route
1135   XBT_DEBUG("<route\tsrc=\"%s\"\tdst=\"%s\"", router_id, host_id);
1136   XBT_DEBUG("symmetrical=\"NO\">");
1137   SURFXML_BUFFER_SET(route_src, router_id);
1138   SURFXML_BUFFER_SET(route_dst, host_id);
1139   A_surfxml_route_symmetrical = A_surfxml_route_symmetrical_NO;
1140   SURFXML_START_TAG(route);
1141
1142   XBT_DEBUG("<link_ctn\tid=\"%s\"/>", link_id_down);
1143   SURFXML_BUFFER_SET(link_ctn_id, link_id_down);
1144   A_surfxml_link_ctn_direction = A_surfxml_link_ctn_direction_NONE;
1145   SURFXML_START_TAG(link_ctn);
1146   SURFXML_END_TAG(link_ctn);
1147
1148   XBT_DEBUG("</route>");
1149   SURFXML_END_TAG(route);
1150
1151   XBT_DEBUG("</AS>");
1152   sg_platf_new_AS_end();
1153   XBT_DEBUG(" ");
1154
1155   //xbt_dynar_free(&tab_elements_num);
1156   free(host_id);
1157   free(router_id);
1158   free(link_router);
1159   free(link_backbone);
1160   free(link_id_up);
1161   free(link_id_down);
1162   surfxml_bufferstack_pop(1);
1163 }
1164
1165 static void routing_parse_Srandom(void)
1166 {
1167   double mean, std, min, max, seed;
1168   char *random_id = A_surfxml_random_id;
1169   char *random_radical = A_surfxml_random_radical;
1170   char *rd_name = NULL;
1171   char *rd_value;
1172   mean = surf_parse_get_double(A_surfxml_random_mean);
1173   std = surf_parse_get_double(A_surfxml_random_std_deviation);
1174   min = surf_parse_get_double(A_surfxml_random_min);
1175   max = surf_parse_get_double(A_surfxml_random_max);
1176   seed = surf_parse_get_double(A_surfxml_random_seed);
1177
1178   double res = 0;
1179   int i = 0;
1180   random_data_t random = xbt_new0(s_random_data_t, 1);
1181   char *tmpbuf;
1182
1183   xbt_dynar_t radical_elements;
1184   unsigned int iter;
1185   char *groups;
1186   int start, end;
1187   xbt_dynar_t radical_ends;
1188
1189   random->generator = A_surfxml_random_generator;
1190   random->seed = seed;
1191   random->min = min;
1192   random->max = max;
1193
1194   /* Check user stupidities */
1195   if (max < min)
1196     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1197   if (mean < min)
1198     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1199   if (mean > max)
1200     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1201
1202   /* normalize the mean and standard deviation before storing */
1203   random->mean = (mean - min) / (max - min);
1204   random->std = std / (max - min);
1205
1206   if (random->mean * (1 - random->mean) < random->std * random->std)
1207     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1208            random->mean, random->std);
1209
1210   XBT_DEBUG
1211       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1212        random_id, random->min, random->max, random->mean, random->std,
1213        random->generator, random->seed, random_radical);
1214
1215   if (xbt_dict_size(random_value) == 0)
1216     random_value = xbt_dict_new();
1217
1218   if (!strcmp(random_radical, "")) {
1219     res = random_generate(random);
1220     rd_value = bprintf("%f", res);
1221     xbt_dict_set(random_value, random_id, rd_value, free);
1222   } else {
1223     radical_elements = xbt_str_split(random_radical, ",");
1224     xbt_dynar_foreach(radical_elements, iter, groups) {
1225       radical_ends = xbt_str_split(groups, "-");
1226       switch (xbt_dynar_length(radical_ends)) {
1227       case 1:
1228         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1229                    "Custom Random '%s' already exists !", random_id);
1230         res = random_generate(random);
1231         tmpbuf =
1232             bprintf("%s%d", random_id,
1233                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1234         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1235         xbt_free(tmpbuf);
1236         break;
1237
1238       case 2:
1239         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1240         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1241         for (i = start; i <= end; i++) {
1242           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1243                      "Custom Random '%s' already exists !", bprintf("%s%d",
1244                                                                     random_id,
1245                                                                     i));
1246           res = random_generate(random);
1247           tmpbuf = bprintf("%s%d", random_id, i);
1248           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), free);
1249           xbt_free(tmpbuf);
1250         }
1251         break;
1252       default:
1253         XBT_INFO("Malformed radical");
1254         break;
1255       }
1256       res = random_generate(random);
1257       rd_name = bprintf("%s_router", random_id);
1258       rd_value = bprintf("%f", res);
1259       xbt_dict_set(random_value, rd_name, rd_value, free);
1260
1261       xbt_dynar_free(&radical_ends);
1262     }
1263     free(rd_name);
1264     xbt_dynar_free(&radical_elements);
1265   }
1266 }
1267
1268 void routing_register_callbacks()
1269 {
1270   sg_platf_host_add_cb(parse_S_host);
1271   sg_platf_router_add_cb(parse_S_router);
1272
1273   surfxml_add_callback(STag_surfxml_random_cb_list, &routing_parse_Srandom);
1274
1275   surfxml_add_callback(STag_surfxml_route_cb_list, &routing_parse_S_route);
1276   surfxml_add_callback(STag_surfxml_ASroute_cb_list, &routing_parse_S_ASroute);
1277   surfxml_add_callback(STag_surfxml_bypassRoute_cb_list,
1278                        &routing_parse_S_bypassRoute);
1279
1280   surfxml_add_callback(ETag_surfxml_link_ctn_cb_list, &routing_parse_link_ctn);
1281
1282   surfxml_add_callback(ETag_surfxml_route_cb_list, &routing_parse_E_route);
1283   surfxml_add_callback(ETag_surfxml_ASroute_cb_list, &routing_parse_E_ASroute);
1284   surfxml_add_callback(ETag_surfxml_bypassRoute_cb_list,
1285                        &routing_parse_E_bypassRoute);
1286
1287   surfxml_add_callback(STag_surfxml_cluster_cb_list, &routing_parse_cluster);
1288
1289   sg_platf_peer_add_cb(routing_parse_peer);
1290   sg_platf_postparse_add_cb(routing_parse_postparse);
1291
1292 #ifdef HAVE_TRACING
1293   instr_routing_define_callbacks();
1294 #endif
1295 }