src/surf/surf_routing.c

   1 /* Copyright (c) 2009-2013. 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 host level
  23 int SIMIX_STORAGE_LEVEL;        //Simix storage level
  24 int MSG_HOST_LEVEL;             //Msg host level
  25 int MSG_STORAGE_LEVEL;          //Msg storage level
  26 int SD_HOST_LEVEL;              //Simdag host level
  27 int SD_STORAGE_LEVEL;           //Simdag storage level
  28 int COORD_HOST_LEVEL=0;         //Coordinates level
  29 int NS3_HOST_LEVEL;             //host node for ns3
  30
  31 /**
  32  * @ingroup SURF_build_api
  33  * @brief A library containing all known links
  34  */
  35 xbt_lib_t link_lib;
  36 int SD_LINK_LEVEL;              //Simdag level
  37 int SURF_LINK_LEVEL;            //Surf level
  38 int NS3_LINK_LEVEL;             //link for ns3
  39
  40 xbt_lib_t as_router_lib;
  41 int ROUTING_ASR_LEVEL;          //Routing level
  42 int COORD_ASR_LEVEL;            //Coordinates level
  43 int NS3_ASR_LEVEL;              //host node for ns3
  44 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  45
  46 static xbt_dict_t random_value = NULL;
  47
  48 /** @brief Retrieve a routing edge from its name
  49  *
  50  * Routing edges are either CPU/workstation and routers, whatever
  51  */
  52 sg_routing_edge_t sg_routing_edge_by_name_or_null(const char *name) {
  53     sg_routing_edge_t net_elm = xbt_lib_get_or_null(host_lib, name, ROUTING_HOST_LEVEL);
  54     if(!net_elm) net_elm = xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  55   return net_elm;
  56 }
  57
  58 /* Global vars */
  59 routing_platf_t routing_platf = NULL;
  60 AS_t current_routing = NULL;
  61
  62 /* global parse functions */
  63 extern xbt_dynar_t mount_list;
  64
  65 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  66
  67 static void routing_parse_peer(sg_platf_peer_cbarg_t peer);     /* peer bypass */
  68 static void routing_parse_Srandom(void);        /* random bypass */
  69
  70 static void routing_parse_postparse(void);
  71
  72 /* this lines are only for replace use like index in the model table */
  73 typedef enum {
  74   SURF_MODEL_FULL = 0,
  75   SURF_MODEL_FLOYD,
  76   SURF_MODEL_DIJKSTRA,
  77   SURF_MODEL_DIJKSTRACACHE,
  78   SURF_MODEL_NONE,
  79   SURF_MODEL_VIVALDI,
  80   SURF_MODEL_CLUSTER
  81 } e_routing_types;
  82
  83 struct s_model_type routing_models[] = {
  84   {"Full",
  85    "Full routing data (fast, large memory requirements, fully expressive)",
  86    model_full_create, model_full_end},
  87   {"Floyd",
  88    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
  89    model_floyd_create, model_floyd_end},
  90   {"Dijkstra",
  91    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
  92    model_dijkstra_create, model_dijkstra_both_end},
  93   {"DijkstraCache",
  94    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
  95    model_dijkstracache_create, model_dijkstra_both_end},
  96   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
  97    model_none_create,  NULL},
  98   {"Vivaldi", "Vivaldi routing",
  99    model_vivaldi_create, NULL},
 100   {"Cluster", "Cluster routing",
 101    model_cluster_create, NULL},
 102   {NULL, NULL, NULL, NULL}
 103 };
 104
 105 /**
 106  * \brief Add a "host_link" to the network element list
 107  */
 108 static void parse_S_host_link(sg_platf_host_link_cbarg_t host)
 109 {
 110   sg_routing_edge_t info = NULL;
 111   info = xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL);
 112   xbt_assert(info, "Host '%s' not found!",host->id);
 113   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER] ||
 114       current_routing->model_desc == &routing_models[SURF_MODEL_VIVALDI],
 115       "You have to be in model Cluster to use tag host_link!");
 116
 117   s_surf_parsing_link_up_down_t link_up_down;
 118   link_up_down.link_up = xbt_lib_get_or_null(link_lib, host->link_up, SURF_LINK_LEVEL);
 119   link_up_down.link_down = xbt_lib_get_or_null(link_lib, host->link_down, SURF_LINK_LEVEL);
 120   link_up_down.limiter_link = NULL;
 121   link_up_down.loopback_link = NULL;
 122
 123   xbt_assert(link_up_down.link_up, "Link '%s' not found!",host->link_up);
 124   xbt_assert(link_up_down.link_down, "Link '%s' not found!",host->link_down);
 125
 126   if(!current_routing->link_up_down_list)
 127     current_routing->link_up_down_list = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 128
 129   // If dynar is is greater than edge id and if the host_link is already defined
 130   if(xbt_dynar_length(current_routing->link_up_down_list) > info->id &&
 131       xbt_dynar_get_as(current_routing->link_up_down_list,info->id,void*))
 132     xbt_die("Host_link for '%s' is already defined!",host->id);
 133
 134   XBT_DEBUG("Push Host_link for host '%s' to position %d",info->name,info->id);
 135   xbt_dynar_set_as(current_routing->link_up_down_list,info->id,s_surf_parsing_link_up_down_t,link_up_down);
 136 }
 137
 138 /**
 139  * \brief Add a "host" to the network element list
 140  */
 141 static void parse_S_host(sg_platf_host_cbarg_t host)
 142 {
 143   sg_routing_edge_t info = NULL;
 144   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 145     current_routing->hierarchy = SURF_ROUTING_BASE;
 146   xbt_assert(!xbt_lib_get_or_null(host_lib, host->id, ROUTING_HOST_LEVEL),
 147              "Reading a host, processing unit \"%s\" already exists", host->id);
 148
 149   info = xbt_new0(s_routing_edge_t, 1);
 150   info->rc_component = current_routing;
 151   info->rc_type = SURF_NETWORK_ELEMENT_HOST;
 152   info->name = xbt_strdup(host->id);
 153   info->id = current_routing->parse_PU(current_routing, (void *) info);
 154   xbt_lib_set(host_lib, host->id, ROUTING_HOST_LEVEL, (void *) info);
 155   XBT_DEBUG("Having set name '%s' id '%d'",host->id,info->id);
 156
 157   if(mount_list){
 158     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 159     mount_list = NULL;
 160   }
 161
 162   if (host->coord && strcmp(host->coord, "")) {
 163     unsigned int cursor;
 164     char*str;
 165
 166     if (!COORD_HOST_LEVEL)
 167       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 168     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 169     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 170     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 171     xbt_dynar_foreach(ctn_str,cursor, str) {
 172       double val = atof(str);
 173       xbt_dynar_push(ctn,&val);
 174     }
 175     xbt_dynar_shrink(ctn, 0);
 176     xbt_dynar_free(&ctn_str);
 177     xbt_lib_set(host_lib, host->id, COORD_HOST_LEVEL, (void *) ctn);
 178     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 179   }
 180 }
 181
 182 /**
 183  * \brief Add a "router" to the network element list
 184  */
 185 static void parse_S_router(sg_platf_router_cbarg_t router)
 186 {
 187   sg_routing_edge_t info = NULL;
 188   if (current_routing->hierarchy == SURF_ROUTING_NULL)
 189     current_routing->hierarchy = SURF_ROUTING_BASE;
 190   xbt_assert(!xbt_lib_get_or_null(as_router_lib, router->id, ROUTING_ASR_LEVEL),
 191              "Reading a router, processing unit \"%s\" already exists",
 192              router->id);
 193
 194   info = xbt_new0(s_routing_edge_t, 1);
 195   info->rc_component = current_routing;
 196   info->rc_type = SURF_NETWORK_ELEMENT_ROUTER;
 197   info->name = xbt_strdup(router->id);
 198   info->id = current_routing->parse_PU(current_routing, (void *) info);
 199   xbt_lib_set(as_router_lib, router->id, ROUTING_ASR_LEVEL, (void *) info);
 200   XBT_DEBUG("Having set name '%s' id '%d'",router->id,info->id);
 201
 202   if (router->coord && strcmp(router->coord, "")) {
 203     unsigned int cursor;
 204     char*str;
 205
 206     if (!COORD_ASR_LEVEL)
 207       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 208     /* Pre-parse the host coordinates */
 209     xbt_dynar_t ctn_str = xbt_str_split_str(router->coord, " ");
 210     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 211     xbt_dynar_foreach(ctn_str,cursor, str) {
 212       double val = atof(str);
 213       xbt_dynar_push(ctn,&val);
 214     }
 215     xbt_dynar_shrink(ctn, 0);
 216     xbt_dynar_free(&ctn_str);
 217     xbt_lib_set(as_router_lib, router->id, COORD_ASR_LEVEL, (void *) ctn);
 218     XBT_DEBUG("Having set router coordinates for '%s'",router->id);
 219   }
 220 }
 221
 222 /**
 223  * \brief Store the route by calling the set_route function of the current routing component
 224  */
 225 static void parse_E_route(sg_platf_route_cbarg_t route)
 226 {
 227   xbt_assert(current_routing->parse_route,
 228              "no defined method \"set_route\" in \"%s\"",
 229              current_routing->name);
 230
 231   current_routing->parse_route(current_routing, route);
 232 }
 233
 234 /**
 235  * \brief Store the ASroute by calling the set_ASroute function of the current routing component
 236  */
 237 static void parse_E_ASroute(sg_platf_route_cbarg_t ASroute)
 238 {
 239   xbt_assert(current_routing->parse_ASroute,
 240              "no defined method \"set_ASroute\" in \"%s\"",
 241              current_routing->name);
 242   current_routing->parse_ASroute(current_routing, ASroute);
 243 }
 244
 245 /**
 246  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 247  */
 248 static void parse_E_bypassRoute(sg_platf_route_cbarg_t route)
 249 {
 250   xbt_assert(current_routing->parse_bypassroute,
 251              "Bypassing mechanism not implemented by routing '%s'",
 252              current_routing->name);
 253
 254   current_routing->parse_bypassroute(current_routing, route);
 255 }
 256
 257 /**
 258  * \brief Store the bypass route by calling the set_bypassroute function of the current routing component
 259  */
 260 static void parse_E_bypassASroute(sg_platf_route_cbarg_t ASroute)
 261 {
 262   xbt_assert(current_routing->parse_bypassroute,
 263              "Bypassing mechanism not implemented by routing '%s'",
 264              current_routing->name);
 265   current_routing->parse_bypassroute(current_routing, ASroute);
 266 }
 267
 268 static void routing_parse_trace(sg_platf_trace_cbarg_t trace)
 269 {
 270   tmgr_trace_t tmgr_trace;
 271   if (!trace->file || strcmp(trace->file, "") != 0) {
 272     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 273   } else if (strcmp(trace->pc_data, "") == 0) {
 274     tmgr_trace = NULL;
 275   } else {
 276     tmgr_trace =
 277           tmgr_trace_new_from_string(trace->id, trace->pc_data,
 278                                      trace->periodicity);
 279   }
 280   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 281 }
 282
 283 static void routing_parse_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 284 {
 285   xbt_assert(xbt_dict_get_or_null
 286               (traces_set_list, trace_connect->trace),
 287               "Cannot connect trace %s to %s: trace unknown",
 288               trace_connect->trace,
 289               trace_connect->element);
 290
 291   switch (trace_connect->kind) {
 292   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 293     xbt_dict_set(trace_connect_list_host_avail,
 294         trace_connect->trace,
 295         xbt_strdup(trace_connect->element), NULL);
 296     break;
 297   case SURF_TRACE_CONNECT_KIND_POWER:
 298     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 299         xbt_strdup(trace_connect->element), NULL);
 300     break;
 301   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 302     xbt_dict_set(trace_connect_list_link_avail,
 303         trace_connect->trace,
 304         xbt_strdup(trace_connect->element), NULL);
 305     break;
 306   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 307     xbt_dict_set(trace_connect_list_bandwidth,
 308         trace_connect->trace,
 309         xbt_strdup(trace_connect->element), NULL);
 310     break;
 311   case SURF_TRACE_CONNECT_KIND_LATENCY:
 312     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 313         xbt_strdup(trace_connect->element), NULL);
 314     break;
 315   default:
 316     xbt_die("Cannot connect trace %s to %s: kind of trace unknown",
 317         trace_connect->trace, trace_connect->element);
 318     break;
 319   }
 320 }
 321
 322 extern int _sg_init_status; /* yay, this is an horrible hack */
 323
 324 /**
 325  * \brief Make a new routing component to the platform
 326  *
 327  * Add a new autonomous system to the platform. Any elements (such as host,
 328  * router or sub-AS) added after this call and before the corresponding call
 329  * to sg_platf_new_AS_close() will be added to this AS.
 330  *
 331  * Once this function was called, the configuration concerning the used
 332  * models cannot be changed anymore.
 333  *
 334  * @param AS_id name of this autonomous system. Must be unique in the platform
 335  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 336  */
 337 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 338 {
 339   XBT_DEBUG("routing_AS_begin");
 340   AS_t new_as;
 341   routing_model_description_t model = NULL;
 342
 343   xbt_assert(!xbt_lib_get_or_null
 344              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 345              "The AS \"%s\" already exists", AS->id);
 346
 347   _sg_init_status = 2; /* horrible hack: direct access to the global controlling the level of configuration to prevent any further config */
 348
 349   /* search the routing model */
 350   switch(AS->routing){
 351     case A_surfxml_AS_routing_Cluster:       model = &routing_models[SURF_MODEL_CLUSTER];break;
 352     case A_surfxml_AS_routing_Dijkstra:      model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 353     case A_surfxml_AS_routing_DijkstraCache: model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 354     case A_surfxml_AS_routing_Floyd:         model = &routing_models[SURF_MODEL_FLOYD];break;
 355     case A_surfxml_AS_routing_Full:          model = &routing_models[SURF_MODEL_FULL];break;
 356     case A_surfxml_AS_routing_None:          model = &routing_models[SURF_MODEL_NONE];break;
 357     case A_surfxml_AS_routing_Vivaldi:       model = &routing_models[SURF_MODEL_VIVALDI];break;
 358     default: xbt_die("Not a valid model!!!");
 359     break;
 360   }
 361
 362   /* make a new routing component */
 363   new_as = (AS_t) model->create();
 364   new_as->model_desc = model;
 365   new_as->hierarchy = SURF_ROUTING_NULL;
 366   new_as->name = xbt_strdup(AS->id);
 367
 368   sg_routing_edge_t info = NULL;
 369   info = xbt_new0(s_routing_edge_t, 1);
 370
 371   if (current_routing == NULL && routing_platf->root == NULL) {
 372
 373     /* it is the first one */
 374     new_as->routing_father = NULL;
 375     routing_platf->root = new_as;
 376     info->id = -1;
 377   } else if (current_routing != NULL && routing_platf->root != NULL) {
 378
 379     xbt_assert(!xbt_dict_get_or_null
 380                (current_routing->routing_sons, AS->id),
 381                "The AS \"%s\" already exists", AS->id);
 382     /* it is a part of the tree */
 383     new_as->routing_father = current_routing;
 384     /* set the father behavior */
 385     if (current_routing->hierarchy == SURF_ROUTING_NULL)
 386       current_routing->hierarchy = SURF_ROUTING_RECURSIVE;
 387     /* add to the sons dictionary */
 388     xbt_dict_set(current_routing->routing_sons, AS->id,
 389                  (void *) new_as, NULL);
 390     /* add to the father element list */
 391     info->id = current_routing->parse_AS(current_routing, (void *) info);
 392   } else {
 393     THROWF(arg_error, 0, "All defined components must be belong to a AS");
 394   }
 395
 396   info->rc_component = new_as->routing_father;
 397   info->rc_type = SURF_NETWORK_ELEMENT_AS;
 398   info->name = new_as->name;
 399
 400   xbt_lib_set(as_router_lib, info->name, ROUTING_ASR_LEVEL,
 401               (void *) info);
 402   XBT_DEBUG("Having set name '%s' id '%d'",new_as->name,info->id);
 403
 404   /* set the new current component of the tree */
 405   current_routing = new_as;
 406   current_routing->net_elem = info;
 407
 408 }
 409
 410 /**
 411  * \brief Specify that the current description of AS is finished
 412  *
 413  * Once you've declared all the content of your AS, you have to close
 414  * it with this call. Your AS is not usable until you call this function.
 415  *
 416  * @fixme: this call is not as robust as wanted: bad things WILL happen
 417  * if you call it twice for the same AS, or if you forget calling it, or
 418  * even if you add stuff to a closed AS
 419  *
 420  */
 421 void routing_AS_end(sg_platf_AS_cbarg_t AS)
 422 {
 423
 424   if (current_routing == NULL) {
 425     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 426   } else {
 427     if (current_routing->model_desc->end)
 428       current_routing->model_desc->end(current_routing);
 429     current_routing = current_routing->routing_father;
 430   }
 431 }
 432
 433 /* Aux Business methods */
 434
 435 /**
 436  * \brief Get the AS father and the first elements of the chain
 437  *
 438  * \param src the source host name
 439  * \param dst the destination host name
 440  *
 441  * Get the common father of the to processing units, and the first different
 442  * father in the chain
 443  */
 444 static void elements_father(sg_routing_edge_t src, sg_routing_edge_t dst,
 445                             AS_t * res_father,
 446                             AS_t * res_src,
 447                             AS_t * res_dst)
 448 {
 449   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 450 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 451   AS_t src_as, dst_as;
 452   AS_t path_src[ELEMENTS_FATHER_MAXDEPTH];
 453   AS_t path_dst[ELEMENTS_FATHER_MAXDEPTH];
 454   int index_src = 0;
 455   int index_dst = 0;
 456   AS_t current;
 457   AS_t current_src;
 458   AS_t current_dst;
 459   AS_t father;
 460
 461   /* (1) find the as where the src and dst are located */
 462   sg_routing_edge_t src_data = src;
 463   sg_routing_edge_t dst_data = dst;
 464   src_as = src_data->rc_component;
 465   dst_as = dst_data->rc_component;
 466 #ifndef NDEBUG
 467   char* src_name = src_data->name;
 468   char* dst_name = dst_data->name;
 469 #endif
 470
 471   xbt_assert(src_as && dst_as,
 472              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 473
 474   /* (2) find the path to the root routing component */
 475   for (current = src_as; current != NULL; current = current->routing_father) {
 476     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 477       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 478     path_src[index_src++] = current;
 479   }
 480   for (current = dst_as; current != NULL; current = current->routing_father) {
 481     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 482       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 483     path_dst[index_dst++] = current;
 484   }
 485
 486   /* (3) find the common father */
 487   do {
 488     current_src = path_src[--index_src];
 489     current_dst = path_dst[--index_dst];
 490   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 491
 492   /* (4) they are not in the same routing component, make the path */
 493   if (current_src == current_dst)
 494     father = current_src;
 495   else
 496     father = path_src[index_src + 1];
 497
 498   /* (5) result generation */
 499   *res_father = father;         /* first the common father of src and dst */
 500   *res_src = current_src;       /* second the first different father of src */
 501   *res_dst = current_dst;       /* three  the first different father of dst */
 502
 503 #undef ELEMENTS_FATHER_MAXDEPTH
 504 }
 505
 506 /* Global Business methods */
 507
 508 /**
 509  * \brief Recursive function for get_route_latency
 510  *
 511  * \param src the source host name
 512  * \param dst the destination host name
 513  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 514  * \param *latency the latency, if needed
 515  *
 516  * This function is called by "get_route" and "get_latency". It allows to walk
 517  * recursively through the ASes tree.
 518  */
 519 static void _get_route_and_latency(sg_routing_edge_t src, sg_routing_edge_t dst,
 520                                    xbt_dynar_t * links, double *latency)
 521 {
 522   s_sg_platf_route_cbarg_t route;
 523   memset(&route,0,sizeof(route));
 524
 525   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 526   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->name, dst->name);
 527
 528   /* Find how src and dst are interconnected */
 529   AS_t common_father, src_father, dst_father;
 530   elements_father(src, dst, &common_father, &src_father, &dst_father);
 531   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 532       common_father->name,src_father->name,dst_father->name);
 533
 534   /* Check whether a direct bypass is defined */
 535   sg_platf_route_cbarg_t e_route_bypass = NULL;
 536   if (common_father->get_bypass_route)
 537     e_route_bypass = common_father->get_bypass_route(common_father, src, dst, latency);
 538
 539   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 540   if (e_route_bypass) {
 541     xbt_dynar_merge(links, &e_route_bypass->link_list);
 542     generic_free_route(e_route_bypass);
 543     return;
 544   }
 545
 546   /* If src and dst are in the same AS, life is good */
 547   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 548     route.link_list = *links;
 549     common_father->get_route_and_latency(common_father, src, dst, &route,latency);
 550     // if vivaldi latency+=vivaldi(src,dst)
 551     return;
 552   }
 553
 554   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 555
 556   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 557   // Find the net_card corresponding to father
 558   sg_routing_edge_t src_father_net_elm = src_father->net_elem;
 559   sg_routing_edge_t dst_father_net_elm = dst_father->net_elem;
 560
 561   common_father->get_route_and_latency(common_father,
 562                                        src_father_net_elm, dst_father_net_elm,
 563                                        &route, latency);
 564
 565   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 566       "bad gateways for route from \"%s\" to \"%s\"", src->name, dst->name);
 567
 568   sg_routing_edge_t src_gateway_net_elm = route.gw_src;
 569   sg_routing_edge_t dst_gateway_net_elm = route.gw_dst;
 570
 571   /* If source gateway is not our source, we have to recursively find our way up to this point */
 572   if (src != src_gateway_net_elm)
 573     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 574   xbt_dynar_merge(links, &route.link_list);
 575
 576   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 577   if (dst_gateway_net_elm != dst)
 578     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 579
 580   // if vivaldi latency+=vivaldi(src_gateway,dst_gateway)
 581 }
 582
 583 /**
 584  * \brief Find a route between hosts
 585  *
 586  * \param src the network_element_t for src host
 587  * \param dst the network_element_t for dst host
 588  * \param route where to store the list of links.
 589  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 590  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 591  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 592  * \pre route!=NULL
 593  *
 594  * walk through the routing components tree and find a route between hosts
 595  * by calling the differents "get_route" functions in each routing component.
 596  */
 597 void routing_get_route_and_latency(sg_routing_edge_t src,
 598                                    sg_routing_edge_t dst,
 599                                    xbt_dynar_t * route, double *latency)
 600 {
 601   XBT_DEBUG("routing_get_route_and_latency from %s to %s",src->name,dst->name);
 602   if (!*route) {
 603     xbt_dynar_reset(routing_platf->last_route);
 604     *route = routing_platf->last_route;
 605   }
 606
 607   _get_route_and_latency(src, dst, route, latency);
 608
 609   xbt_assert(!latency || *latency >= 0.0,
 610              "negative latency on route between \"%s\" and \"%s\"", src->name, dst->name);
 611 }
 612
 613 static xbt_dynar_t recursive_get_onelink_routes(AS_t rc)
 614 {
 615   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
 616
 617   //adding my one link routes
 618   xbt_dynar_t onelink_mine = rc->get_onelink_routes(rc);
 619   if (onelink_mine)
 620     xbt_dynar_merge(&ret,&onelink_mine);
 621
 622   //recursing
 623   char *key;
 624   xbt_dict_cursor_t cursor = NULL;
 625   AS_t rc_child;
 626   xbt_dict_foreach(rc->routing_sons, cursor, key, rc_child) {
 627     xbt_dynar_t onelink_child = recursive_get_onelink_routes(rc_child);
 628     if (onelink_child)
 629       xbt_dynar_merge(&ret,&onelink_child);
 630   }
 631   return ret;
 632 }
 633
 634 static xbt_dynar_t get_onelink_routes(void)
 635 {
 636   return recursive_get_onelink_routes(routing_platf->root);
 637 }
 638
 639 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 640 {
 641   sg_routing_edge_t rc = sg_routing_edge_by_name_or_null(name);
 642   if (rc)
 643     return rc->rc_type;
 644
 645   return SURF_NETWORK_ELEMENT_NULL;
 646 }
 647
 648 /**
 649  * \brief Generic method: create the global routing schema
 650  *
 651  * Make a global routing structure and set all the parsing functions.
 652  */
 653 void routing_model_create( void *loopback)
 654 {
 655   /* config the uniq global routing */
 656   routing_platf = xbt_new0(s_routing_platf_t, 1);
 657   routing_platf->root = NULL;
 658   routing_platf->get_onelink_routes = get_onelink_routes;
 659   routing_platf->loopback = loopback;
 660   routing_platf->last_route = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 661   /* no current routing at moment */
 662   current_routing = NULL;
 663 }
 664
 665
 666 /* ************************************************** */
 667 /* ********** PATERN FOR NEW ROUTING **************** */
 668
 669 /* The minimal configuration of a new routing model need the next functions,
 670  * also you need to set at the start of the file, the new model in the model
 671  * list. Remember keep the null ending of the list.
 672  */
 673 /*** Routing model structure ***/
 674 // typedef struct {
 675 //   s_routing_component_t generic_routing;
 676 //   /* things that your routing model need */
 677 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 678
 679 /*** Parse routing model functions ***/
 680 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 681 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 682 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 683 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 684 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 685
 686 /*** Business methods ***/
 687 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 688 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 689 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 690
 691 /*** Creation routing model functions ***/
 692 // static void* model_NEW_create(void) {
 693 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 694 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 695 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 696 //   new_component->generic_routing.set_route = model_NEW_set_route;
 697 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 698 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 699 //   new_component->generic_routing.get_route = NEW_get_route;
 700 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 701 //   new_component->generic_routing.finalize = NEW_finalize;
 702 //   /* initialization of internal structures */
 703 //   return new_component;
 704 // } /* mandatory */
 705 // static void  model_NEW_load(void) {}   /* mandatory */
 706 // static void  model_NEW_unload(void) {} /* mandatory */
 707 // static void  model_NEW_end(void) {}    /* mandatory */
 708
 709 /* ************************************************************************** */
 710 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 711
 712 void routing_cluster_add_backbone(void* bb) {
 713   xbt_assert(current_routing->model_desc == &routing_models[SURF_MODEL_CLUSTER],
 714         "You have to be in model Cluster to use tag backbone!");
 715   xbt_assert(!((as_cluster_t)current_routing)->backbone,"The backbone link is already defined!");
 716   ((as_cluster_t)current_routing)->backbone = bb;
 717   XBT_DEBUG("Add a backbone to AS '%s'",current_routing->name);
 718 }
 719
 720 static void routing_parse_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 721 {
 722   int start, end, i;
 723   char *groups , *host_id , *link_id = NULL;
 724   unsigned int iter;
 725   xbt_dynar_t radical_elements;
 726   xbt_dynar_t radical_ends;
 727
 728   //Make all hosts
 729   radical_elements = xbt_str_split(cabinet->radical, ",");
 730   xbt_dynar_foreach(radical_elements, iter, groups) {
 731
 732     radical_ends = xbt_str_split(groups, "-");
 733     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 734
 735     switch (xbt_dynar_length(radical_ends)) {
 736     case 1:
 737       end = start;
 738       break;
 739     case 2:
 740       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 741       break;
 742     default:
 743       surf_parse_error("Malformed radical");
 744       break;
 745     }
 746     s_sg_platf_host_cbarg_t host;
 747     memset(&host, 0, sizeof(host));
 748     host.initial_state = SURF_RESOURCE_ON;
 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       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 769       xbt_dynar_push(power_state_list,&cabinet->power);
 770       host.power_peak = power_state_list;
 771       sg_platf_new_host(&host);
 772       sg_platf_new_link(&link);
 773
 774       char* link_up = bprintf("%s_UP",link_id);
 775       char* link_down = bprintf("%s_DOWN",link_id);
 776       host_link.id = host_id;
 777       host_link.link_up = link_up;
 778       host_link.link_down= link_down;
 779       sg_platf_new_host_link(&host_link);
 780
 781       free(host_id);
 782       free(link_id);
 783       free(link_up);
 784       free(link_down);
 785     }
 786
 787     xbt_dynar_free(&radical_ends);
 788   }
 789   xbt_dynar_free(&radical_elements);
 790 }
 791
 792 static void routing_parse_cluster(sg_platf_cluster_cbarg_t cluster)
 793 {
 794   char *host_id, *groups, *link_id = NULL;
 795   xbt_dict_t patterns = NULL;
 796
 797   s_sg_platf_host_cbarg_t host;
 798   s_sg_platf_link_cbarg_t link;
 799
 800   unsigned int iter;
 801   int start, end, i;
 802   xbt_dynar_t radical_elements;
 803   xbt_dynar_t radical_ends;
 804
 805   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 806       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 807     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 808     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 809     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 810     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 811   }
 812
 813   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 814   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 815   AS.id = cluster->id;
 816   AS.routing = A_surfxml_AS_routing_Cluster;
 817   sg_platf_new_AS_begin(&AS);
 818
 819   current_routing->link_up_down_list
 820             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 821
 822   //Make all hosts
 823   radical_elements = xbt_str_split(cluster->radical, ",");
 824   xbt_dynar_foreach(radical_elements, iter, groups) {
 825
 826     radical_ends = xbt_str_split(groups, "-");
 827     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 828
 829     switch (xbt_dynar_length(radical_ends)) {
 830     case 1:
 831       end = start;
 832       break;
 833     case 2:
 834       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 835       break;
 836     default:
 837       surf_parse_error("Malformed radical");
 838       break;
 839     }
 840     for (i = start; i <= end; i++) {
 841       host_id =
 842           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 843       link_id = bprintf("%s_link_%d", cluster->id, i);
 844
 845       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->power);
 846
 847       memset(&host, 0, sizeof(host));
 848       host.id = host_id;
 849       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 850         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 851         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 852         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 853         host.power_trace = tmgr_trace_new_from_file(avail_file);
 854         xbt_free(avail_file);
 855       } else {
 856         XBT_DEBUG("\tavailability_file=\"\"");
 857       }
 858
 859       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 860         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 861         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 862         host.state_trace = tmgr_trace_new_from_file(avail_file);
 863         xbt_free(avail_file);
 864       } else {
 865         XBT_DEBUG("\tstate_file=\"\"");
 866       }
 867
 868       xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
 869       xbt_dynar_push(power_state_list,&cluster->power);
 870       host.power_peak = power_state_list;
 871       host.pstate = 0;
 872
 873       //host.power_peak = cluster->power;
 874       host.power_scale = 1.0;
 875       host.core_amount = cluster->core_amount;
 876       host.initial_state = SURF_RESOURCE_ON;
 877       host.coord = "";
 878       sg_platf_new_host(&host);
 879       XBT_DEBUG("</host>");
 880
 881       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 882                 cluster->bw, cluster->lat);
 883
 884       memset(&link, 0, sizeof(link));
 885       link.id = link_id;
 886       link.bandwidth = cluster->bw;
 887       link.latency = cluster->lat;
 888       link.state = SURF_RESOURCE_ON;
 889       link.policy = cluster->sharing_policy;
 890       sg_platf_new_link(&link);
 891
 892       s_surf_parsing_link_up_down_t info;
 893
 894       if (link.policy == SURF_LINK_FULLDUPLEX) {
 895         char *tmp_link = bprintf("%s_UP", link_id);
 896         info.link_up =
 897             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 898         free(tmp_link);
 899         tmp_link = bprintf("%s_DOWN", link_id);
 900         info.link_down =
 901             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 902         free(tmp_link);
 903       } else {
 904         info.link_up = xbt_lib_get_or_null(link_lib, link_id, SURF_LINK_LEVEL);
 905         info.link_down = info.link_up;
 906       }
 907
 908       if(cluster->limiter_link!=0){
 909         char *tmp_link = bprintf("%s_limiter", link_id);
 910         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 911                 cluster->limiter_link);
 912
 913
 914         memset(&link, 0, sizeof(link));
 915         link.id = tmp_link;
 916         link.bandwidth = cluster->limiter_link;
 917         link.latency = 0;
 918         link.state = SURF_RESOURCE_ON;
 919         link.policy = SURF_LINK_SHARED;
 920         sg_platf_new_link(&link);
 921          info.limiter_link =
 922             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 923         free(tmp_link);
 924       }else{
 925         info.limiter_link =NULL;
 926       }
 927
 928       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 929         char *tmp_link = bprintf("%s_loopback", link_id);
 930         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 931                 cluster->limiter_link);
 932
 933
 934         memset(&link, 0, sizeof(link));
 935         link.id = tmp_link;
 936         link.bandwidth = cluster->loopback_bw;
 937         link.latency = cluster->loopback_lat;
 938         link.state = SURF_RESOURCE_ON;
 939         link.policy = SURF_LINK_FATPIPE;
 940         sg_platf_new_link(&link);
 941          info.loopback_link =
 942             xbt_lib_get_or_null(link_lib, tmp_link, SURF_LINK_LEVEL);
 943         free(tmp_link);
 944       }else{
 945         info.loopback_link =NULL;
 946       }
 947
 948       xbt_dynar_push(current_routing->link_up_down_list,&info);
 949       xbt_free(link_id);
 950       xbt_free(host_id);
 951     }
 952
 953     xbt_dynar_free(&radical_ends);
 954   }
 955   xbt_dynar_free(&radical_elements);
 956
 957   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 958   // and it's very useful to connect clusters together
 959   XBT_DEBUG(" ");
 960   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 961   char *newid = NULL;
 962   s_sg_platf_router_cbarg_t router;
 963   memset(&router, 0, sizeof(router));
 964   router.id = cluster->router_id;
 965   router.coord = "";
 966   if (!router.id || !strcmp(router.id, ""))
 967     router.id = newid =
 968         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 969                 cluster->suffix);
 970   sg_platf_new_router(&router);
 971   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 972   free(newid);
 973
 974   //Make the backbone
 975   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 976     char *link_backbone = bprintf("%s_backbone", cluster->id);
 977     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 978               cluster->bb_bw, cluster->bb_lat);
 979
 980     memset(&link, 0, sizeof(link));
 981     link.id = link_backbone;
 982     link.bandwidth = cluster->bb_bw;
 983     link.latency = cluster->bb_lat;
 984     link.state = SURF_RESOURCE_ON;
 985     link.policy = cluster->bb_sharing_policy;
 986
 987     sg_platf_new_link(&link);
 988
 989     routing_cluster_add_backbone(xbt_lib_get_or_null(link_lib, link_backbone, SURF_LINK_LEVEL));
 990
 991     free(link_backbone);
 992   }
 993
 994   XBT_DEBUG("</AS>");
 995   sg_platf_new_AS_end();
 996   XBT_DEBUG(" ");
 997   xbt_dict_free(&patterns); // no op if it were never set
 998 }
 999
1000 static void routing_parse_postparse(void) {
1001   xbt_dict_free(&random_value);
1002 }
1003
1004 static void routing_parse_peer(sg_platf_peer_cbarg_t peer)
1005 {
1006   char *host_id = NULL;
1007   char *link_id = NULL;
1008   char *router_id = NULL;
1009
1010   XBT_DEBUG(" ");
1011   host_id = HOST_PEER(peer->id);
1012   link_id = LINK_PEER(peer->id);
1013   router_id = ROUTER_PEER(peer->id);
1014
1015   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
1016   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
1017   AS.id = peer->id;
1018   AS.routing = A_surfxml_AS_routing_Cluster;
1019   sg_platf_new_AS_begin(&AS);
1020
1021   current_routing->link_up_down_list
1022             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
1023
1024   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->power);
1025   s_sg_platf_host_cbarg_t host;
1026   memset(&host, 0, sizeof(host));
1027   host.initial_state = SURF_RESOURCE_ON;
1028   host.id = host_id;
1029
1030   xbt_dynar_t power_state_list = xbt_dynar_new(sizeof(double), NULL);
1031   xbt_dynar_push(power_state_list,&peer->power);
1032   host.power_peak = power_state_list;
1033   host.pstate = 0;
1034   //host.power_peak = peer->power;
1035   host.power_scale = 1.0;
1036   host.power_trace = peer->availability_trace;
1037   host.state_trace = peer->state_trace;
1038   host.core_amount = 1;
1039   sg_platf_new_host(&host);
1040
1041   s_sg_platf_link_cbarg_t link;
1042   memset(&link, 0, sizeof(link));
1043   link.state = SURF_RESOURCE_ON;
1044   link.policy = SURF_LINK_SHARED;
1045   link.latency = peer->lat;
1046
1047   char* link_up = bprintf("%s_UP",link_id);
1048   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1049             peer->bw_out, peer->lat);
1050   link.id = link_up;
1051   link.bandwidth = peer->bw_out;
1052   sg_platf_new_link(&link);
1053
1054   char* link_down = bprintf("%s_DOWN",link_id);
1055   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1056             peer->bw_in, peer->lat);
1057   link.id = link_down;
1058   link.bandwidth = peer->bw_in;
1059   sg_platf_new_link(&link);
1060
1061   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1062   s_sg_platf_host_link_cbarg_t host_link;
1063   memset(&host_link, 0, sizeof(host_link));
1064   host_link.id = host_id;
1065   host_link.link_up = link_up;
1066   host_link.link_down= link_down;
1067   sg_platf_new_host_link(&host_link);
1068
1069   XBT_DEBUG("<router id=\"%s\"/>", router_id);
1070   s_sg_platf_router_cbarg_t router;
1071   memset(&router, 0, sizeof(router));
1072   router.id = router_id;
1073   router.coord = peer->coord;
1074   sg_platf_new_router(&router);
1075   ((as_cluster_t)current_routing)->router = xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
1076
1077   XBT_DEBUG("</AS>");
1078   sg_platf_new_AS_end();
1079   XBT_DEBUG(" ");
1080
1081   //xbt_dynar_free(&tab_elements_num);
1082   free(router_id);
1083   free(host_id);
1084   free(link_id);
1085   free(link_up);
1086   free(link_down);
1087 }
1088
1089 static void routing_parse_Srandom(void)
1090 {
1091   double mean, std, min, max, seed;
1092   char *random_id = A_surfxml_random_id;
1093   char *random_radical = A_surfxml_random_radical;
1094   char *rd_name = NULL;
1095   char *rd_value;
1096   mean = surf_parse_get_double(A_surfxml_random_mean);
1097   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1098   min = surf_parse_get_double(A_surfxml_random_min);
1099   max = surf_parse_get_double(A_surfxml_random_max);
1100   seed = surf_parse_get_double(A_surfxml_random_seed);
1101
1102   double res = 0;
1103   int i = 0;
1104   random_data_t random = xbt_new0(s_random_data_t, 1);
1105   char *tmpbuf;
1106
1107   xbt_dynar_t radical_elements;
1108   unsigned int iter;
1109   char *groups;
1110   int start, end;
1111   xbt_dynar_t radical_ends;
1112
1113   switch (A_surfxml_random_generator) {
1114   case AU_surfxml_random_generator:
1115   case A_surfxml_random_generator_NONE:
1116     random->generator = NONE;
1117     break;
1118   case A_surfxml_random_generator_DRAND48:
1119     random->generator = DRAND48;
1120     break;
1121   case A_surfxml_random_generator_RAND:
1122     random->generator = RAND;
1123     break;
1124   case A_surfxml_random_generator_RNGSTREAM:
1125     random->generator = RNGSTREAM;
1126     break;
1127   default:
1128     surf_parse_error("Invalid random generator");
1129     break;
1130   }
1131   random->seed = seed;
1132   random->min = min;
1133   random->max = max;
1134
1135   /* Check user stupidities */
1136   if (max < min)
1137     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1138   if (mean < min)
1139     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1140   if (mean > max)
1141     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1142
1143   /* normalize the mean and standard deviation before storing */
1144   random->mean = (mean - min) / (max - min);
1145   random->std = std / (max - min);
1146
1147   if (random->mean * (1 - random->mean) < random->std * random->std)
1148     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1149            random->mean, random->std);
1150
1151   XBT_DEBUG
1152       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1153        random_id, random->min, random->max, random->mean, random->std,
1154        (int)random->generator, random->seed, random_radical);
1155
1156   if (!random_value)
1157     random_value = xbt_dict_new_homogeneous(free);
1158
1159   if (!strcmp(random_radical, "")) {
1160     res = random_generate(random);
1161     rd_value = bprintf("%f", res);
1162     xbt_dict_set(random_value, random_id, rd_value, NULL);
1163   } else {
1164     radical_elements = xbt_str_split(random_radical, ",");
1165     xbt_dynar_foreach(radical_elements, iter, groups) {
1166       radical_ends = xbt_str_split(groups, "-");
1167       switch (xbt_dynar_length(radical_ends)) {
1168       case 1:
1169         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1170                    "Custom Random '%s' already exists !", random_id);
1171         res = random_generate(random);
1172         tmpbuf =
1173             bprintf("%s%d", random_id,
1174                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1175         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1176         xbt_free(tmpbuf);
1177         break;
1178
1179       case 2:
1180         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1181         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1182         for (i = start; i <= end; i++) {
1183           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1184                      "Custom Random '%s' already exists !", bprintf("%s%d",
1185                                                                     random_id,
1186                                                                     i));
1187           res = random_generate(random);
1188           tmpbuf = bprintf("%s%d", random_id, i);
1189           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1190           xbt_free(tmpbuf);
1191         }
1192         break;
1193       default:
1194         XBT_CRITICAL("Malformed radical");
1195         break;
1196       }
1197       res = random_generate(random);
1198       rd_name = bprintf("%s_router", random_id);
1199       rd_value = bprintf("%f", res);
1200       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1201
1202       xbt_dynar_free(&radical_ends);
1203     }
1204     free(rd_name);
1205     xbt_dynar_free(&radical_elements);
1206   }
1207 }
1208
1209 void routing_register_callbacks()
1210 {
1211   sg_platf_host_add_cb(parse_S_host);
1212   sg_platf_router_add_cb(parse_S_router);
1213   sg_platf_host_link_add_cb(parse_S_host_link);
1214   sg_platf_route_add_cb(parse_E_route);
1215   sg_platf_ASroute_add_cb(parse_E_ASroute);
1216   sg_platf_bypassRoute_add_cb(parse_E_bypassRoute);
1217   sg_platf_bypassASroute_add_cb(parse_E_bypassASroute);
1218
1219   sg_platf_cluster_add_cb(routing_parse_cluster);
1220   sg_platf_cabinet_add_cb(routing_parse_cabinet);
1221
1222   sg_platf_peer_add_cb(routing_parse_peer);
1223   sg_platf_postparse_add_cb(routing_parse_postparse);
1224
1225   /* we care about the ASes while parsing the platf. Incredible, isnt it? */
1226   sg_platf_AS_end_add_cb(routing_AS_end);
1227   sg_platf_AS_begin_add_cb(routing_AS_begin);
1228
1229   sg_platf_trace_add_cb(routing_parse_trace);
1230   sg_platf_trace_connect_add_cb(routing_parse_trace_connect);
1231
1232 #ifdef HAVE_TRACING
1233   instr_routing_define_callbacks();
1234 #endif
1235 }
1236
1237 /**
1238  * \brief Recursive function for finalize
1239  *
1240  * \param rc the source host name
1241  *
1242  * This fuction is call by "finalize". It allow to finalize the
1243  * AS or routing components. It delete all the structures.
1244  */
1245 static void finalize_rec(AS_t as) {
1246   xbt_dict_cursor_t cursor = NULL;
1247   char *key;
1248   AS_t elem;
1249
1250   xbt_dict_foreach(as->routing_sons, cursor, key, elem) {
1251     finalize_rec(elem);
1252   }
1253
1254   as->finalize(as);
1255 }
1256
1257 /** \brief Frees all memory allocated by the routing module */
1258 void routing_exit(void) {
1259   if (!routing_platf)
1260     return;
1261   xbt_dynar_free(&routing_platf->last_route);
1262   finalize_rec(routing_platf->root);
1263   xbt_free(routing_platf);
1264 }
1265
1266 AS_t surf_AS_get_routing_root() {
1267   return routing_platf->root;
1268 }
1269
1270 const char *surf_AS_get_name(AS_t as) {
1271   return as->name;
1272 }
1273
1274 xbt_dict_t surf_AS_get_routing_sons(AS_t as) {
1275   return as->routing_sons;
1276 }
1277
1278 const char *surf_AS_get_model(AS_t as) {
1279   return as->model_desc->name;
1280 }
1281
1282 xbt_dynar_t surf_AS_get_hosts(AS_t as) {
1283   xbt_dynar_t elms = as->index_network_elm;
1284   sg_routing_edge_t relm;
1285   xbt_dictelm_t delm;
1286   int index;
1287   int count = xbt_dynar_length(elms);
1288   xbt_dynar_t res =  xbt_dynar_new(sizeof(xbt_dictelm_t), NULL);
1289   for (index = 0; index < count; index++) {
1290      relm = xbt_dynar_get_as(elms, index, sg_routing_edge_t);
1291      delm = xbt_lib_get_elm_or_null(host_lib, relm->name);
1292      if (delm!=NULL) {
1293        xbt_dynar_push(res, &delm);
1294      }
1295   }
1296   return res;
1297 }