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 "simgrid/platf_interface.h"    // platform creation API internal interface
   8
   9 #include "surf_routing_private.h"
  10 #include "surf/surf_routing.h"
  11 #include "surf/surfxml_parse_values.h"
  12
  13 /**
  14  * @ingroup SURF_build_api
  15  * @brief A library containing all known workstations
  16  */
  17 xbt_lib_t host_lib;
  18
  19 int ROUTING_HOST_LEVEL;         //Routing level
  20 int SURF_CPU_LEVEL;             //Surf cpu level
  21 int SURF_WKS_LEVEL;             //Surf workstation level
  22 int SIMIX_HOST_LEVEL;           //Simix level
  23 int MSG_HOST_LEVEL;             //Msg level
  24 int SD_HOST_LEVEL;              //Simdag level
  25 int COORD_HOST_LEVEL=0;         //Coordinates level
  26 int NS3_HOST_LEVEL;             //host node for ns3
  27
  28 /**
  29  * @ingroup SURF_build_api
  30  * @brief A library containing all known links
  31  */
  32 xbt_lib_t link_lib;
  33 int SD_LINK_LEVEL;              //Simdag level
  34 int SURF_LINK_LEVEL;            //Surf level
  35 int NS3_LINK_LEVEL;             //link for ns3
  36
  37 xbt_lib_t as_router_lib;
  38 int ROUTING_ASR_LEVEL;          //Routing level
  39 int COORD_ASR_LEVEL;            //Coordinates level
  40 int NS3_ASR_LEVEL;              //host node for ns3
  41 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  42
  43 static xbt_dict_t random_value = NULL;
  44
  45 /** @brief Retrieve a routing edge from its name
  46  *
  47  * Routing edges are either CPU/workstation and routers, whatever
  48  */
  49 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  50     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  51     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  52   return net_elm;
  53 }
  54
  55 /* Global vars */
  56 routing_platf_t routing_platf = NULL;
  57 AS_t current_routing = NULL;
  58
  59 /* global parse functions */
  60 extern xbt_dynar_t mount_list;
  61
  62 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  63
  64 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  65 static void routing_parse_Srandom(void);        /* random bypass */
  66
  67 static void routing_parse_postparse(void);
  68
  69 /* this lines are only for replace use like index in the model table */
  70 typedef enum {
  71   SURF_MODEL_FULL = 0,
  72   SURF_MODEL_FLOYD,
  73   SURF_MODEL_DIJKSTRA,
  74   SURF_MODEL_DIJKSTRACACHE,
  75   SURF_MODEL_NONE,
  76   SURF_MODEL_VIVALDI,
  77   SURF_MODEL_CLUSTER
  78 } e_routing_types;
  79
  80 struct s_model_type routing_models[] = {
  81   {"Full",
  82    "Full routing data (fast, large memory requirements, fully expressive)",
  83    model_full_create, model_full_end},
  84   {"Floyd",
  85    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  86    model_floyd_create, model_floyd_end},
  87   {"Dijkstra",
  88    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  89    model_dijkstra_create, model_dijkstra_both_end},
  90   {"DijkstraCache",
  91    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  92    model_dijkstracache_create, model_dijkstra_both_end},
  93   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  94    model_none_create,  NULL},
  95   {"Vivaldi", "Vivaldi routing",
  96    model_vivaldi_create, NULL},
  97   {"Cluster", "Cluster routing",
  98    model_cluster_create, NULL},
  99   {NULL, NULL, NULL, NULL}
 100 };
 101
 102 /**
 103  * \brief Add a "host_link" to the network element list
 104  */
 105 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 106 {
 107   sg_routing_edge_t info = NULL;
 108   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 109   xbt_assert(info, "Host '%s' not found!",host->id);
 110   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 111       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 112       "You have to be in model Cluster to use tag host_link!");
 113
 114   s_surf_parsing_link_up_down_t link_up_down;
 115   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 116   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 117   link_up_down.limiter_link = NULL;
 118   link_up_down.loopback_link = NULL;
 119
 120   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 121   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 122
 123   if(!current_routing->link_up_down_list)
 124     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 125
 126   // If dynar is is greater than edge id and if the host_link is already defined
 127   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 128       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 129     xbt_die("Host_link for '%s' is already defined!",host->id);
 130
 131   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 132   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 133 }
 134
 135 /**
 136  * \brief Add a "host" to the network element list
 137  */
 138 static void parse_S_host(sg_platf_host_cbarg_t host)
 139 {
 140   sg_routing_edge_t info = NULL;
 141   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 142     current_routing->hierarchy = SURF_ROUTING_BASE;
 143   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 144              "Reading a host, processing unit \"%s\" already exists", host->id);
 145
 146   info = xbt_new0(s_routing_edge_t, 1);
 147   info->rc_component = current_routing;
 148   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 149   info->name = xbt_strdup(host->id);
 150   info->id = current_routing->parse_PU(current_routing, (void *) info);
 151   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 152   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 153
 154   if(mount_list){
 155     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 156     mount_list = NULL;
 157   }
 158
 159   if (host->coord && strcmp(host->coord, "")) {
 160     unsigned int cursor;
 161     char*str;
 162
 163     if (!COORD_HOST_LEVEL)
 164       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 165     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 166     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 167     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 168     xbt_dynar_foreach(ctn_str,cursor, str) {
 169       double val = atof(str);
 170       xbt_dynar_push(ctn,&val);
 171     }
 172     xbt_dynar_shrink(ctn, 0);
 173     xbt_dynar_free(&ctn_str);
 174     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 175     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 176   }
 177 }
 178
 179 /**
 180  * \brief Add a "router" to the network element list
 181  */
 182 static void parse_S_router(sg_platf_router_cbarg_t router)
 183 {
 184   sg_routing_edge_t info = NULL;
 185   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 186     current_routing->hierarchy = SURF_ROUTING_BASE;
 187   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 188              "Reading a router, processing unit \"%s\" already exists",
 189              router->id);
 190
 191   info = xbt_new0(s_routing_edge_t, 1);
 192   info->rc_component = current_routing;
 193   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 194   info->name = xbt_strdup(router->id);
 195   info->id = current_routing->parse_PU(current_routing, (void *) info);
 196   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 197   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 198
 199   if (router->coord && strcmp(router->coord, "")) {
 200     unsigned int cursor;
 201     char*str;
 202
 203     if (!COORD_ASR_LEVEL)
 204       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 205     /* Pre-parse the host coordinates */
 206     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 207     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 208     xbt_dynar_foreach(ctn_str,cursor, str) {
 209       double val = atof(str);
 210       xbt_dynar_push(ctn,&val);
 211     }
 212     xbt_dynar_shrink(ctn, 0);
 213     xbt_dynar_free(&ctn_str);
 214     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 215     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 216   }
 217 }
 218
 219 /**
 220  * \brief Store the route by calling the set_route function of the current routing component
 221  */
 222 static void parse_E_route(sg_platf_route_cbarg_t route)
 223 {
 224   xbt_assert(current_routing->parse_route,
 225              "no defined method \"set_route\" in \"%s\"",
 226              current_routing->name);
 227
 228   current_routing->parse_route(current_routing, route);
 229 }
 230
 231 /**
 232  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 233  */
 234 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 235 {
 236   xbt_assert(current_routing->parse_ASroute,
 237              "no defined method \"set_ASroute\" in \"%s\"",
 238              current_routing->name);
 239   current_routing->parse_ASroute(current_routing, ASroute);
 240 }
 241
 242 /**
 243  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 244  */
 245 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 246 {
 247   xbt_assert(current_routing->parse_bypassroute,
 248              "Bypassing mechanism not implemented by routing '%s'",
 249              current_routing->name);
 250
 251   current_routing->parse_bypassroute(current_routing, route);
 252 }
 253
 254 /**
 255  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 256  */
 257 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 258 {
 259   xbt_assert(current_routing->parse_bypassroute,
 260              "Bypassing mechanism not implemented by routing '%s'",
 261              current_routing->name);
 262   current_routing->parse_bypassroute(current_routing, ASroute);
 263 }
 264
 265 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 266 {
 267   tmgr_trace_t tmgr_trace;
 268   if (!trace->file || strcmp(trace->file, "") != 0) {
 269     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 270   } else if (strcmp(trace->pc_data, "") == 0) {
 271     tmgr_trace = NULL;
 272   } else {
 273     tmgr_trace =
 274           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 275                                      trace->periodicity);
 276   }
 277   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 278 }
 279
 280 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 281 {
 282   xbt_assert(xbt_dict_get_or_null
 283               (traces_set_list, trace_connect->trace),
 284               "Cannot connect trace %s to %s: trace unknown",
 285               trace_connect->trace,
 286               trace_connect->element);
 287
 288   switch (trace_connect->kind) {
 289   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 290     xbt_dict_set(trace_connect_list_host_avail,
 291         trace_connect->trace,
 292         xbt_strdup(trace_connect->element), NULL);
 293     break;
 294   case SURF_TRACE_CONNECT_KIND_POWER:
 295     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 296         xbt_strdup(trace_connect->element), NULL);
 297     break;
 298   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 299     xbt_dict_set(trace_connect_list_link_avail,
 300         trace_connect->trace,
 301         xbt_strdup(trace_connect->element), NULL);
 302     break;
 303   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 304     xbt_dict_set(trace_connect_list_bandwidth,
 305         trace_connect->trace,
 306         xbt_strdup(trace_connect->element), NULL);
 307     break;
 308   case SURF_TRACE_CONNECT_KIND_LATENCY:
 309     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 310         xbt_strdup(trace_connect->element), NULL);
 311     break;
 312   default:
 313     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 314         trace_connect->trace, trace_connect->element);
 315     break;
 316   }
 317 }
 318
 319 extern int _sg_init_status; /* yay, this is an horrible hack */
 320
 321 /**
 322  * \brief Make a new routing component to the platform
 323  *
 324  * Add a new autonomous system to the platform. Any elements (such as host,
 325  * router or sub-AS) added after this call and before the corresponding call
 326  * to sg_platf_new_AS_close() will be added to this AS.
 327  *
 328  * Once this function was called, the configuration concerning the used
 329  * models cannot be changed anymore.
 330  *
 331  * @param AS_id name of this autonomous system. Must be unique in the platform
 332  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 333  */
 334 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 335 {
 336   XBT_DEBUG("routing_AS_begin");
 337   AS_t new_as;
 338   routing_model_description_t model = NULL;
 339
 340   xbt_assert(!xbt_lib_get_or_null
 341              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 342              "The AS \"%s\" already exists", AS->id);
 343
 344   _sg_init_status = 2; /* horrible hack: direct access to the global controlling the level of configuration to prevent any further config */
 345
 346   /* search the routing model */
 347   switch(AS->routing){
 348     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 349     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 350     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 351     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 352     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 353     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 354     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 355     default: xbt_die("Not a valid model!!!");
 356     break;
 357   }
 358
 359   /* make a new routing component */
 360   new_as = (AS_t) model->create();
 361   new_as->model_desc = model;
 362   new_as->hierarchy = SURF_ROUTING_NULL;
 363   new_as->name = xbt_strdup(AS->id);
 364
 365   sg_routing_edge_t info = NULL;
 366   info = xbt_new0(s_routing_edge_t, 1);
 367
 368   if (current_routing == NULL && routing_platf->root == NULL) {
 369
 370     /* it is the first one */
 371     new_as->routing_father = NULL;
 372     routing_platf->root = new_as;
 373     info->id = -1;
 374   } else if (current_routing != NULL && routing_platf->root != NULL) {
 375
 376     xbt_assert(!xbt_dict_get_or_null
 377                (current_routing->routing_sons, AS->id),
 378                "The AS \"%s\" already exists", AS->id);
 379     /* it is a part of the tree */
 380     new_as->routing_father = current_routing;
 381     /* set the father behavior */
 382     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 383       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 384     /* add to the sons dictionary */
 385     xbt_dict_set(current_routing->routing_sons, AS->id,
 386                  (void *) new_as, NULL);
 387     /* add to the father element list */
 388     info->id = current_routing->parse_AS(current_routing, (void *) info);
 389   } else {
 390     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 391   }
 392
 393   info->rc_component = new_as->routing_father;
 394   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 395   info->name = new_as->name;
 396
 397   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 398               (void *) info);
 399   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 400
 401   /* set the new current component of the tree */
 402   current_routing = new_as;
 403   current_routing->net_elem = info;
 404
 405 }
 406
 407 /**
 408  * \brief Specify that the current description of AS is finished
 409  *
 410  * Once you've declared all the content of your AS, you have to close
 411  * it with this call. Your AS is not usable until you call this function.
 412  *
 413  * @fixme: this call is not as robust as wanted: bad things WILL happen
 414  * if you call it twice for the same AS, or if you forget calling it, or
 415  * even if you add stuff to a closed AS
 416  *
 417  */
 418 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 419 {
 420
 421   if (current_routing == NULL) {
 422     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 423   } else {
 424     if (current_routing->model_desc->end)
 425       current_routing->model_desc->end(current_routing);
 426     current_routing = current_routing->routing_father;
 427   }
 428 }
 429
 430 /* Aux Business methods */
 431
 432 /**
 433  * \brief Get the AS father and the first elements of the chain
 434  *
 435  * \param src the source host name
 436  * \param dst the destination host name
 437  *
 438  * Get the common father of the to processing units, and the first different
 439  * father in the chain
 440  */
 441 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 442                             AS_t * res_father,
 443                             AS_t * res_src,
 444                             AS_t * res_dst)
 445 {
 446   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 447 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 448   AS_t src_as, dst_as;
 449   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 450   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 451   int index_src = 0;
 452   int index_dst = 0;
 453   AS_t current;
 454   AS_t current_src;
 455   AS_t current_dst;
 456   AS_t father;
 457
 458   /* (1) find the as where the src and dst are located */
 459   sg_routing_edge_t src_data = src;
 460   sg_routing_edge_t dst_data = dst;
 461   src_as = src_data->rc_component;
 462   dst_as = dst_data->rc_component;
 463 #ifndef NDEBUG
 464   char* src_name = src_data->name;
 465   char* dst_name = dst_data->name;
 466 #endif
 467
 468   xbt_assert(src_as && dst_as,
 469              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 470
 471   /* (2) find the path to the root routing component */
 472   for (current = src_as; current != NULL; current = current->routing_father) {
 473     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 474       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 475     path_src[index_src++] = current;
 476   }
 477   for (current = dst_as; current != NULL; current = current->routing_father) {
 478     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 479       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 480     path_dst[index_dst++] = current;
 481   }
 482
 483   /* (3) find the common father */
 484   do {
 485     current_src = path_src[--index_src];
 486     current_dst = path_dst[--index_dst];
 487   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 488
 489   /* (4) they are not in the same routing component, make the path */
 490   if (current_src == current_dst)
 491     father = current_src;
 492   else
 493     father = path_src[index_src + 1];
 494
 495   /* (5) result generation */
 496   *res_father = father;         /* first the common father of src and dst */
 497   *res_src = current_src;       /* second the first different father of src */
 498   *res_dst = current_dst;       /* three  the first different father of dst */
 499
 500 #undef ELEMENTS_FATHER_MAXDEPTH
 501 }
 502
 503 /* Global Business methods */
 504
 505 /**
 506  * \brief Recursive function for get_route_latency
 507  *
 508  * \param src the source host name
 509  * \param dst the destination host name
 510  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 511  * \param *latency the latency, if needed
 512  *
 513  * This function is called by "get_route" and "get_latency". It allows to walk
 514  * recursively through the ASes tree.
 515  */
 516 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 517                                    xbt_dynar_t * links, double *latency)
 518 {
 519   s_sg_platf_route_cbarg_t route;
 520   memset(&route,0,sizeof(route));
 521
 522   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 523   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 524
 525   /* Find how src and dst are interconnected */
 526   AS_t common_father, src_father, dst_father;
 527   elements_father(src, dst, &common_father, &src_father, &dst_father);
 528   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 529       common_father->name,src_father->name,dst_father->name);
 530
 531   /* Check whether a direct bypass is defined */
 532   sg_platf_route_cbarg_t e_route_bypass = NULL;
 533   if (common_father->get_bypass_route)
 534     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 535
 536   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 537   if (e_route_bypass) {
 538     xbt_dynar_merge(links, &e_route_bypass->link_list);
 539     generic_free_route(e_route_bypass);
 540     return;
 541   }
 542
 543   /* If src and dst are in the same AS, life is good */
 544   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 545     route.link_list = *links;
 546     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 547     // if vivaldi latency+=vivaldi(src,dst)
 548     return;
 549   }
 550
 551   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 552
 553   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 554   // Find the net_card corresponding to father
 555   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 556   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 557
 558   common_father->get_route_and_latency(common_father,
 559                                        src_father_net_elm, dst_father_net_elm,
 560                                        &route, latency);
 561
 562   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 563       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 564
 565   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 566   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 567
 568   /* If source gateway is not our source, we have to recursively find our way up to this point */
 569   if (src != src_gateway_net_elm)
 570     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 571   xbt_dynar_merge(links, &route.link_list);
 572
 573   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 574   if (dst_gateway_net_elm != dst)
 575     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 576
 577   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 578 }
 579
 580 /**
 581  * \brief Find a route between hosts
 582  *
 583  * \param src the network_element_t for src host
 584  * \param dst the network_element_t for dst host
 585  * \param route where to store the list of links.
 586  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 587  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 588  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 589  * \pre route!=NULL
 590  *
 591  * walk through the routing components tree and find a route between hosts
 592  * by calling the differents "get_route" functions in each routing component.
 593  */
 594 void routing_get_route_and_latency(sg_routing_edge_t src,
 595                                    sg_routing_edge_t dst,
 596                                    xbt_dynar_t * route, double *latency)
 597 {
 598   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 599   if (!*route) {
 600     xbt_dynar_reset(routing_platf->last_route);
 601     *route = routing_platf->last_route;
 602   }
 603
 604   _get_route_and_latency(src, dst, route, latency);
 605
 606   xbt_assert(!latency || *latency >= 0.0,
 607              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 608 }
 609
 610 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 611 {
 612   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 613
 614   //adding my one link routes
 615   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 616   if (onelink_mine)
 617     xbt_dynar_merge(&ret,&onelink_mine);
 618
 619   //recursing
 620   char *key;
 621   xbt_dict_cursor_t cursor = NULL;
 622   AS_t rc_child;
 623   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 624     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 625     if (onelink_child)
 626       xbt_dynar_merge(&ret,&onelink_child);
 627   }
 628   return ret;
 629 }
 630
 631 static xbt_dynar_t get_onelink_routes(void)
 632 {
 633   return recursive_get_onelink_routes(routing_platf->root);
 634 }
 635
 636 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 637 {
 638   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 639   if (rc)
 640     return rc->rc_type;
 641
 642   return SURF_NETWORK_ELEMENT_NULL;
 643 }
 644
 645 /**
 646  * \brief Generic method: create the global routing schema
 647  *
 648  * Make a global routing structure and set all the parsing functions.
 649  */
 650 void routing_model_create( void *loopback)
 651 {
 652   /* config the uniq global routing */
 653   routing_platf = xbt_new0(s_routing_platf_t, 1);
 654   routing_platf->root = NULL;
 655   routing_platf->get_onelink_routes = get_onelink_routes;
 656   routing_platf->loopback = loopback;
 657   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 658   /* no current routing at moment */
 659   current_routing = NULL;
 660 }
 661
 662
 663 /* ************************************************** */
 664 /* ********** PATERN FOR NEW ROUTING **************** */
 665
 666 /* The minimal configuration of a new routing model need the next functions,
 667  * also you need to set at the start of the file, the new model in the model
 668  * list. Remember keep the null ending of the list.
 669  */
 670 /*** Routing model structure ***/
 671 // typedef struct {
 672 //   s_routing_component_t generic_routing;
 673 //   /* things that your routing model need */
 674 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 675
 676 /*** Parse routing model functions ***/
 677 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 678 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 679 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 680 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 681 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 682
 683 /*** Business methods ***/
 684 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 685 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 686 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 687
 688 /*** Creation routing model functions ***/
 689 // static void* model_NEW_create(void) {
 690 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 691 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 692 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 693 //   new_component->generic_routing.set_route = model_NEW_set_route;
 694 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 695 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 696 //   new_component->generic_routing.get_route = NEW_get_route;
 697 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 698 //   new_component->generic_routing.finalize = NEW_finalize;
 699 //   /* initialization of internal structures */
 700 //   return new_component;
 701 // } /* mandatory */
 702 // static void  model_NEW_load(void) {}   /* mandatory */
 703 // static void  model_NEW_unload(void) {} /* mandatory */
 704 // static void  model_NEW_end(void) {}    /* mandatory */
 705
 706 /* ************************************************************************** */
 707 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 708
 709 void routing_cluster_add_backbone(void* bb) {
 710   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 711         "You have to be in model Cluster to use tag backbone!");
 712   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 713   ((as_cluster_t)current_routing)->backbone = bb;
 714   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 715 }
 716
 717 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 718 {
 719   int start, end, i;
 720   char *groups , *host_id , *link_id = NULL;
 721   unsigned int iter;
 722   xbt_dynar_t radical_elements;
 723   xbt_dynar_t radical_ends;
 724
 725   //Make all hosts
 726   radical_elements = xbt_str_split(cabinet->radical, ",");
 727   xbt_dynar_foreach(radical_elements, iter, groups) {
 728
 729     radical_ends = xbt_str_split(groups, "-");
 730     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 731
 732     switch (xbt_dynar_length(radical_ends)) {
 733     case 1:
 734       end = start;
 735       break;
 736     case 2:
 737       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 738       break;
 739     default:
 740       surf_parse_error("Malformed radical");
 741       break;
 742     }
 743     s_sg_platf_host_cbarg_t host;
 744     memset(&host, 0, sizeof(host));
 745     host.initial_state = SURF_RESOURCE_ON;
 746     xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 747     xbt_dynar_push(power_state_list,&cabinet->power);
 748     host.power_peak = power_state_list;
 749     host.pstate = 0;
 750     host.power_scale = 1.0;
 751     host.core_amount = 1;
 752
 753     s_sg_platf_link_cbarg_t link;
 754     memset(&link, 0, sizeof(link));
 755     link.state = SURF_RESOURCE_ON;
 756     link.policy = SURF_LINK_FULLDUPLEX;
 757     link.latency = cabinet->lat;
 758     link.bandwidth = cabinet->bw;
 759
 760     s_sg_platf_host_link_cbarg_t host_link;
 761     memset(&host_link, 0, sizeof(host_link));
 762
 763     for (i = start; i <= end; i++) {
 764       host_id = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 765       link_id = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 766       host.id = host_id;
 767       link.id = link_id;
 768       sg_platf_new_host(&host);
 769       sg_platf_new_link(&link);
 770
 771       char* link_up = bprintf("%s_UP",link_id);
 772       char* link_down = bprintf("%s_DOWN",link_id);
 773       host_link.id = host_id;
 774       host_link.link_up = link_up;
 775       host_link.link_down= link_down;
 776       sg_platf_new_host_link(&host_link);
 777
 778       free(host_id);
 779       free(link_id);
 780       free(link_up);
 781       free(link_down);
 782     }
 783
 784     xbt_dynar_free(&radical_ends);
 785   }
 786   xbt_dynar_free(&radical_elements);
 787 }
 788
 789 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 790 {
 791   char *host_id, *groups, *link_id = NULL;
 792   xbt_dict_t patterns = NULL;
 793
 794   s_sg_platf_host_cbarg_t host;
 795   s_sg_platf_link_cbarg_t link;
 796
 797   unsigned int iter;
 798   int start, end, i;
 799   xbt_dynar_t radical_elements;
 800   xbt_dynar_t radical_ends;
 801
 802   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 803       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 804     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 805     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 806     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 807     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 808   }
 809
 810   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 811   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 812   AS.id = cluster->id;
 813   AS.routing = A_surfxml_AS_routing_Cluster;
 814   sg_platf_new_AS_begin(&AS);
 815
 816   current_routing->link_up_down_list
 817             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 818
 819   //Make all hosts
 820   radical_elements = xbt_str_split(cluster->radical, ",");
 821   xbt_dynar_foreach(radical_elements, iter, groups) {
 822
 823     radical_ends = xbt_str_split(groups, "-");
 824     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 825
 826     switch (xbt_dynar_length(radical_ends)) {
 827     case 1:
 828       end = start;
 829       break;
 830     case 2:
 831       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 832       break;
 833     default:
 834       surf_parse_error("Malformed radical");
 835       break;
 836     }
 837     for (i = start; i <= end; i++) {
 838       host_id =
 839           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 840       link_id = bprintf("%s_link_%d", cluster->id, i);
 841
 842       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 843
 844       memset(&host, 0, sizeof(host));
 845       host.id = host_id;
 846       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 847         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 848         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 849         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 850         host.power_trace = tmgr_trace_new_from_file(avail_file);
 851         xbt_free(avail_file);
 852       } else {
 853         XBT_DEBUG("\tavailability_file=\"\"");
 854       }
 855
 856       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 857         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 858         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 859         host.state_trace = tmgr_trace_new_from_file(avail_file);
 860         xbt_free(avail_file);
 861       } else {
 862         XBT_DEBUG("\tstate_file=\"\"");
 863       }
 864
 865       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 866       xbt_dynar_push(power_state_list,&cluster->power);
 867       host.power_peak = power_state_list;
 868       host.pstate = 0;
 869
 870       //host.power_peak = cluster->power;
 871       host.power_scale = 1.0;
 872       host.core_amount = cluster->core_amount;
 873       host.initial_state = SURF_RESOURCE_ON;
 874       host.coord = "";
 875       sg_platf_new_host(&host);
 876       XBT_DEBUG("</host>");
 877
 878       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 879                 cluster->bw, cluster->lat);
 880
 881       memset(&link, 0, sizeof(link));
 882       link.id = link_id;
 883       link.bandwidth = cluster->bw;
 884       link.latency = cluster->lat;
 885       link.state = SURF_RESOURCE_ON;
 886       link.policy = cluster->sharing_policy;
 887       sg_platf_new_link(&link);
 888
 889       s_surf_parsing_link_up_down_t info;
 890
 891       if (link.policy == SURF_LINK_FULLDUPLEX) {
 892         char *tmp_link = bprintf("%s_UP", link_id);
 893         info.link_up =
 894             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 895         free(tmp_link);
 896         tmp_link = bprintf("%s_DOWN", link_id);
 897         info.link_down =
 898             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 899         free(tmp_link);
 900       } else {
 901         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 902         info.link_down = info.link_up;
 903       }
 904
 905       if(cluster->limiter_link!=0){
 906         char *tmp_link = bprintf("%s_limiter", link_id);
 907         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 908                 cluster->limiter_link);
 909
 910
 911         memset(&link, 0, sizeof(link));
 912         link.id = tmp_link;
 913         link.bandwidth = cluster->limiter_link;
 914         link.latency = 0;
 915         link.state = SURF_RESOURCE_ON;
 916         link.policy = SURF_LINK_SHARED;
 917         sg_platf_new_link(&link);
 918          info.limiter_link =
 919             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 920         free(tmp_link);
 921       }else{
 922         info.limiter_link =NULL;
 923       }
 924
 925       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 926         char *tmp_link = bprintf("%s_loopback", link_id);
 927         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 928                 cluster->limiter_link);
 929
 930
 931         memset(&link, 0, sizeof(link));
 932         link.id = tmp_link;
 933         link.bandwidth = cluster->loopback_bw;
 934         link.latency = cluster->loopback_lat;
 935         link.state = SURF_RESOURCE_ON;
 936         link.policy = SURF_LINK_FATPIPE;
 937         sg_platf_new_link(&link);
 938          info.loopback_link =
 939             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 940         free(tmp_link);
 941       }else{
 942         info.loopback_link =NULL;
 943       }
 944
 945       xbt_dynar_push(current_routing->link_up_down_list,&info);
 946       xbt_free(link_id);
 947       xbt_free(host_id);
 948     }
 949
 950     xbt_dynar_free(&radical_ends);
 951   }
 952   xbt_dynar_free(&radical_elements);
 953
 954   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 955   // and it's very useful to connect clusters together
 956   XBT_DEBUG(" ");
 957   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 958   char *newid = NULL;
 959   s_sg_platf_router_cbarg_t router;
 960   memset(&router, 0, sizeof(router));
 961   router.id = cluster->router_id;
 962   router.coord = "";
 963   if (!router.id || !strcmp(router.id, ""))
 964     router.id = newid =
 965         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 966                 cluster->suffix);
 967   sg_platf_new_router(&router);
 968   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 969   free(newid);
 970
 971   //Make the backbone
 972   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 973     char *link_backbone = bprintf("%s_backbone", cluster->id);
 974     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 975               cluster->bb_bw, cluster->bb_lat);
 976
 977     memset(&link, 0, sizeof(link));
 978     link.id = link_backbone;
 979     link.bandwidth = cluster->bb_bw;
 980     link.latency = cluster->bb_lat;
 981     link.state = SURF_RESOURCE_ON;
 982     link.policy = cluster->bb_sharing_policy;
 983
 984     sg_platf_new_link(&link);
 985
 986     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 987
 988     free(link_backbone);
 989   }
 990
 991   XBT_DEBUG("</AS>");
 992   sg_platf_new_AS_end();
 993   XBT_DEBUG(" ");
 994   xbt_dict_free(&patterns); // no op if it were never set
 995 }
 996
 997 static void routing_parse_postparse(void) {
 998   xbt_dict_free(&random_value);
 999 }
1000
1001 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1002 {
1003   char *host_id = NULL;
1004   char *link_id = NULL;
1005   char *router_id = NULL;
1006
1007   XBT_DEBUG(" ");
1008   host_id = HOST_PEER(peer->id);
1009   link_id = LINK_PEER(peer->id);
1010   router_id = ROUTER_PEER(peer->id);
1011
1012   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
1013   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
1014   AS.id = peer->id;
1015   AS.routing = A_surfxml_AS_routing_Cluster;
1016   sg_platf_new_AS_begin(&AS);
1017
1018   current_routing->link_up_down_list
1019             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
1020
1021   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1022   s_sg_platf_host_cbarg_t host;
1023   memset(&host, 0, sizeof(host));
1024   host.initial_state = SURF_RESOURCE_ON;
1025   host.id = host_id;
1026
1027   xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
1028   xbt_dynar_push(power_state_list,&peer->power);
1029   host.power_peak = power_state_list;
1030   host.pstate = 0;
1031   //host.power_peak = peer->power;
1032   host.power_scale = 1.0;
1033   host.power_trace = peer->availability_trace;
1034   host.state_trace = peer->state_trace;
1035   host.core_amount = 1;
1036   sg_platf_new_host(&host);
1037
1038   s_sg_platf_link_cbarg_t link;
1039   memset(&link, 0, sizeof(link));
1040   link.state = SURF_RESOURCE_ON;
1041   link.policy = SURF_LINK_SHARED;
1042   link.latency = peer->lat;
1043
1044   char* link_up = bprintf("%s_UP",link_id);
1045   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1046             peer->bw_out, peer->lat);
1047   link.id = link_up;
1048   link.bandwidth = peer->bw_out;
1049   sg_platf_new_link(&link);
1050
1051   char* link_down = bprintf("%s_DOWN",link_id);
1052   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1053             peer->bw_in, peer->lat);
1054   link.id = link_down;
1055   link.bandwidth = peer->bw_in;
1056   sg_platf_new_link(&link);
1057
1058   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1059   s_sg_platf_host_link_cbarg_t host_link;
1060   memset(&host_link, 0, sizeof(host_link));
1061   host_link.id = host_id;
1062   host_link.link_up = link_up;
1063   host_link.link_down= link_down;
1064   sg_platf_new_host_link(&host_link);
1065
1066   XBT_DEBUG("<router id=\"%s\"/>", router_id);
1067   s_sg_platf_router_cbarg_t router;
1068   memset(&router, 0, sizeof(router));
1069   router.id = router_id;
1070   router.coord = peer->coord;
1071   sg_platf_new_router(&router);
1072   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
1073
1074   XBT_DEBUG("</AS>");
1075   sg_platf_new_AS_end();
1076   XBT_DEBUG(" ");
1077
1078   //xbt_dynar_free(&tab_elements_num);
1079   free(host_id);
1080   free(link_id);
1081   free(link_up);
1082   free(link_down);
1083 }
1084
1085 static void routing_parse_Srandom(void)
1086 {
1087   double mean, std, min, max, seed;
1088   char *random_id = A_surfxml_random_id;
1089   char *random_radical = A_surfxml_random_radical;
1090   char *rd_name = NULL;
1091   char *rd_value;
1092   mean = surf_parse_get_double(A_surfxml_random_mean);
1093   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1094   min = surf_parse_get_double(A_surfxml_random_min);
1095   max = surf_parse_get_double(A_surfxml_random_max);
1096   seed = surf_parse_get_double(A_surfxml_random_seed);
1097
1098   double res = 0;
1099   int i = 0;
1100   random_data_t random = xbt_new0(s_random_data_t, 1);
1101   char *tmpbuf;
1102
1103   xbt_dynar_t radical_elements;
1104   unsigned int iter;
1105   char *groups;
1106   int start, end;
1107   xbt_dynar_t radical_ends;
1108
1109   switch (A_surfxml_random_generator) {
1110   case AU_surfxml_random_generator:
1111   case A_surfxml_random_generator_NONE:
1112     random->generator = NONE;
1113     break;
1114   case A_surfxml_random_generator_DRAND48:
1115     random->generator = DRAND48;
1116     break;
1117   case A_surfxml_random_generator_RAND:
1118     random->generator = RAND;
1119     break;
1120   case A_surfxml_random_generator_RNGSTREAM:
1121     random->generator = RNGSTREAM;
1122     break;
1123   default:
1124     surf_parse_error("Invalid random generator");
1125     break;
1126   }
1127   random->seed = seed;
1128   random->min = min;
1129   random->max = max;
1130
1131   /* Check user stupidities */
1132   if (max < min)
1133     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1134   if (mean < min)
1135     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1136   if (mean > max)
1137     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1138
1139   /* normalize the mean and standard deviation before storing */
1140   random->mean = (mean - min) / (max - min);
1141   random->std = std / (max - min);
1142
1143   if (random->mean * (1 - random->mean) < random->std * random->std)
1144     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1145            random->mean, random->std);
1146
1147   XBT_DEBUG
1148       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1149        random_id, random->min, random->max, random->mean, random->std,
1150        (int)random->generator, random->seed, random_radical);
1151
1152   if (!random_value)
1153     random_value = xbt_dict_new_homogeneous(free);
1154
1155   if (!strcmp(random_radical, "")) {
1156     res = random_generate(random);
1157     rd_value = bprintf("%f", res);
1158     xbt_dict_set(random_value, random_id, rd_value, NULL);
1159   } else {
1160     radical_elements = xbt_str_split(random_radical, ",");
1161     xbt_dynar_foreach(radical_elements, iter, groups) {
1162       radical_ends = xbt_str_split(groups, "-");
1163       switch (xbt_dynar_length(radical_ends)) {
1164       case 1:
1165         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1166                    "Custom Random '%s' already exists !", random_id);
1167         res = random_generate(random);
1168         tmpbuf =
1169             bprintf("%s%d", random_id,
1170                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1171         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1172         xbt_free(tmpbuf);
1173         break;
1174
1175       case 2:
1176         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1177         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1178         for (i = start; i <= end; i++) {
1179           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1180                      "Custom Random '%s' already exists !", bprintf("%s%d",
1181                                                                     random_id,
1182                                                                     i));
1183           res = random_generate(random);
1184           tmpbuf = bprintf("%s%d", random_id, i);
1185           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1186           xbt_free(tmpbuf);
1187         }
1188         break;
1189       default:
1190         XBT_CRITICAL("Malformed radical");
1191         break;
1192       }
1193       res = random_generate(random);
1194       rd_name = bprintf("%s_router", random_id);
1195       rd_value = bprintf("%f", res);
1196       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1197
1198       xbt_dynar_free(&radical_ends);
1199     }
1200     free(rd_name);
1201     xbt_dynar_free(&radical_elements);
1202   }
1203 }
1204
1205 void routing_register_callbacks()
1206 {
1207   sg_platf_host_add_cb(parse_S_host);
1208   sg_platf_router_add_cb(parse_S_router);
1209   sg_platf_host_link_add_cb(parse_S_host_link);
1210   sg_platf_route_add_cb(parse_E_route);
1211   sg_platf_ASroute_add_cb(parse_E_ASroute);
1212   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1213   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1214
1215   sg_platf_cluster_add_cb(routing_parse_cluster);
1216   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1217
1218   sg_platf_peer_add_cb(routing_parse_peer);
1219   sg_platf_postparse_add_cb(routing_parse_postparse);
1220
1221   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1222   sg_platf_AS_end_add_cb(routing_AS_end);
1223   sg_platf_AS_begin_add_cb(routing_AS_begin);
1224
1225   sg_platf_trace_add_cb(routing_parse_trace);
1226   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1227
1228 #ifdef HAVE_TRACING
1229   instr_routing_define_callbacks();
1230 #endif
1231 }
1232
1233 /**
1234  * \brief Recursive function for finalize
1235  *
1236  * \param rc the source host name
1237  *
1238  * This fuction is call by "finalize". It allow to finalize the
1239  * AS or routing components. It delete all the structures.
1240  */
1241 static void finalize_rec(AS_t as) {
1242   xbt_dict_cursor_t cursor = NULL;
1243   char *key;
1244   AS_t elem;
1245
1246   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1247     finalize_rec(elem);
1248   }
1249
1250   as->finalize(as);
1251 }
1252
1253 /** \brief Frees all memory allocated by the routing module */
1254 void routing_exit(void) {
1255   if (!routing_platf)
1256     return;
1257   xbt_dynar_free(&routing_platf->last_route);
1258   finalize_rec(routing_platf->root);
1259   xbt_free(routing_platf);
1260 }
1261
1262 AS_t surf_AS_get_routing_root() {
1263   return routing_platf->root;
1264 }
1265
1266 const char *surf_AS_get_name(AS_t as) {
1267   return as->name;
1268 }
1269
1270 xbt_dict_t surf_AS_get_routing_sons(AS_t as) {
1271   return as->routing_sons;
1272 }
1273
1274 const char *surf_AS_get_model(AS_t as) {
1275   return as->model_desc->name;
1276 }
1277
1278 xbt_dynar_t surf_AS_get_hosts(AS_t as) {
1279   xbt_dynar_t elms = as->index_network_elm;
1280   sg_routing_edge_t relm;
1281   xbt_dictelm_t delm;
1282   int index;
1283   int count = xbt_dynar_length(elms);
1284   xbt_dynar_t res =  xbt_dynar_new(sizeof(xbt_dictelm_t), NULL);
1285   for (index = 0; index < count; index++) {
1286      relm = xbt_dynar_get_as(elms, index, sg_routing_edge_t);
1287      delm = xbt_lib_get_elm_or_null(host_lib, relm->name);
1288      if (delm!=NULL) {
1289        xbt_dynar_push(res, &delm);
1290      }
1291   }
1292   return res;
1293 }