src/surf/surf_routing.cpp

   1 /* Copyright (c) 2009-2011, 2013-2015. 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 "surf_routing.hpp"
   8 #include "surf_routing_private.hpp"
   9 #include "surf_routing_cluster.hpp"
  10 #include "surf_routing_cluster_torus.hpp"
  11 #include "surf_routing_cluster_fat_tree.hpp"
  12
  13 #include "simgrid/platf_interface.h"    // platform creation API internal interface
  14 #include "simgrid/sg_config.h"
  15 #include "storage_interface.hpp"
  16 #include "src/surf/platform.hpp"
  17 #include "surf/surfxml_parse_values.h"
  18
  19 /*************
  20  * Callbacks *
  21  *************/
  22
  23 namespace simgrid {
  24 namespace surf {
  25
  26 simgrid::xbt::signal<void(simgrid::surf::NetCard*)> netcardCreatedCallbacks;
  27 simgrid::xbt::signal<void(simgrid::surf::As*)> asCreatedCallbacks;
  28
  29 }
  30 }
  31
  32 /**
  33  * @ingroup SURF_build_api
  34  * @brief A library containing all known hosts
  35  */
  36 xbt_dict_t host_list;
  37
  38 int COORD_HOST_LEVEL=0;         //Coordinates level
  39
  40 int MSG_FILE_LEVEL;             //Msg file level
  41
  42 int SIMIX_STORAGE_LEVEL;        //Simix storage level
  43 int MSG_STORAGE_LEVEL;          //Msg storage level
  44 int SD_STORAGE_LEVEL;           //Simdag storage level
  45
  46 xbt_lib_t as_router_lib;
  47 int ROUTING_ASR_LEVEL;          //Routing level
  48 int COORD_ASR_LEVEL;            //Coordinates level
  49 int NS3_ASR_LEVEL;              //host node for ns3
  50 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  51
  52 static xbt_dict_t random_value = NULL;
  53
  54
  55 /** @brief Retrieve a netcard from its name
  56  *
  57  * Netcards are the thing that connect host or routers to the network
  58  */
  59 simgrid::surf::NetCard *sg_netcard_by_name_or_null(const char *name)
  60 {
  61   sg_host_t h = sg_host_by_name(name);
  62   simgrid::surf::NetCard *net_elm = h==NULL?NULL: h->pimpl_netcard;
  63   if (!net_elm)
  64     net_elm = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  65   return net_elm;
  66 }
  67
  68 /* Global vars */
  69 simgrid::surf::RoutingPlatf *routing_platf = NULL;
  70
  71 /* global parse functions */
  72 extern xbt_dynar_t mount_list;
  73
  74 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  75
  76 /** The current AS in the parsing */
  77 static simgrid::surf::As *current_routing = NULL;
  78 simgrid::surf::As* routing_get_current()
  79 {
  80   return current_routing;
  81 }
  82
  83 static void routing_parse_postparse(void);
  84
  85 /* this lines are only for replace use like index in the model table */
  86 typedef enum {
  87   SURF_MODEL_FULL = 0,
  88   SURF_MODEL_FLOYD,
  89   SURF_MODEL_DIJKSTRA,
  90   SURF_MODEL_DIJKSTRACACHE,
  91   SURF_MODEL_NONE,
  92   SURF_MODEL_VIVALDI,
  93   SURF_MODEL_CLUSTER,
  94   SURF_MODEL_TORUS_CLUSTER,
  95   SURF_MODEL_FAT_TREE_CLUSTER,
  96 } e_routing_types;
  97
  98 struct s_model_type routing_models[] = {
  99   {"Full",
 100    "Full routing data (fast, large memory requirements, fully expressive)",
 101    model_full_create, model_full_end},
 102   {"Floyd",
 103    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
 104    model_floyd_create, model_floyd_end},
 105   {"Dijkstra",
 106    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
 107    model_dijkstra_create, model_dijkstra_both_end},
 108   {"DijkstraCache",
 109    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
 110    model_dijkstracache_create, model_dijkstra_both_end},
 111   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
 112    model_none_create,  NULL},
 113   {"Vivaldi", "Vivaldi routing",
 114    model_vivaldi_create, NULL},
 115   {"Cluster", "Cluster routing",
 116    model_cluster_create, NULL},
 117   {"Torus_Cluster", "Torus Cluster routing",
 118    model_torus_cluster_create, NULL},
 119   {"Fat_Tree_Cluster", "Fat Tree Cluster routing",
 120    model_fat_tree_cluster_create, NULL},
 121   {NULL, NULL, NULL, NULL}
 122 };
 123
 124 /**
 125  * \brief Add a netcard connecting an host to the network element list
 126  * FIXME: integrate into host constructor
 127  */
 128 void sg_platf_new_netcard(sg_platf_host_link_cbarg_t netcard)
 129 {
 130   simgrid::surf::NetCard *info = sg_host_by_name(netcard->id)->pimpl_netcard;
 131   xbt_assert(info, "Host '%s' not found!", netcard->id);
 132   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER] ||
 133       current_routing->p_modelDesc == &routing_models[SURF_MODEL_VIVALDI],
 134       "You have to be in model Cluster to use tag host_link!");
 135
 136   s_surf_parsing_link_up_down_t link_up_down;
 137   link_up_down.link_up = Link::byName(netcard->link_up);
 138   link_up_down.link_down = Link::byName(netcard->link_down);
 139
 140   xbt_assert(link_up_down.link_up, "Link '%s' not found!",netcard->link_up);
 141   xbt_assert(link_up_down.link_down, "Link '%s' not found!",netcard->link_down);
 142
 143   if(!current_routing->p_linkUpDownList)
 144     current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 145
 146   // If dynar is is greater than netcard id and if the host_link is already defined
 147   if((int)xbt_dynar_length(current_routing->p_linkUpDownList) > info->getId() &&
 148       xbt_dynar_get_as(current_routing->p_linkUpDownList, info->getId(), void*))
 149         surf_parse_error("Host_link for '%s' is already defined!",netcard->id);
 150
 151   XBT_DEBUG("Push Host_link for host '%s' to position %d", info->getName(), info->getId());
 152   xbt_dynar_set_as(current_routing->p_linkUpDownList, info->getId(), s_surf_parsing_link_up_down_t, link_up_down);
 153 }
 154
 155 /**
 156  * \brief Add a "host" to the network element list
 157  */
 158 simgrid::surf::NetCard *routing_add_host(
 159   simgrid::surf::As* current_routing, sg_platf_host_cbarg_t host)
 160 {
 161   if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 162     current_routing->p_hierarchy = SURF_ROUTING_BASE;
 163   xbt_assert(!sg_host_by_name(host->id),
 164                      "Reading a host, processing unit \"%s\" already exists", host->id);
 165
 166   simgrid::surf::NetCard *netcard =
 167     new simgrid::surf::NetCardImpl(xbt_strdup(host->id),
 168                                                     -1,
 169                                                     SURF_NETWORK_ELEMENT_HOST,
 170                                                     current_routing);
 171   netcard->setId(current_routing->parsePU(netcard));
 172   sg_host_t h = sg_host_by_name_or_create(host->id);
 173   h->pimpl_netcard = netcard;
 174   XBT_DEBUG("Having set name '%s' id '%d'", host->id, netcard->getId());
 175   simgrid::surf::netcardCreatedCallbacks(netcard);
 176
 177   if(mount_list){
 178     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 179     mount_list = NULL;
 180   }
 181
 182   if (host->coord && strcmp(host->coord, "")) {
 183     unsigned int cursor;
 184     char*str;
 185
 186     if (!COORD_HOST_LEVEL)
 187       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 188     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 189     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 190     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 191     xbt_dynar_foreach(ctn_str,cursor, str) {
 192       double val = atof(str);
 193       xbt_dynar_push(ctn,&val);
 194     }
 195     xbt_dynar_shrink(ctn, 0);
 196     xbt_dynar_free(&ctn_str);
 197     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
 198     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 199   }
 200
 201   return netcard;
 202 }
 203
 204 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 205 {
 206   tmgr_trace_t tmgr_trace;
 207   if (!trace->file || strcmp(trace->file, "") != 0) {
 208     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 209   } else {
 210     xbt_assert(strcmp(trace->pc_data, ""),
 211         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 212     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 213   }
 214   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 215 }
 216
 217 void sg_platf_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 218 {
 219   xbt_assert(xbt_dict_get_or_null(traces_set_list, trace_connect->trace),
 220               "Cannot connect trace %s to %s: trace unknown",
 221               trace_connect->trace,
 222               trace_connect->element);
 223
 224   switch (trace_connect->kind) {
 225   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 226     xbt_dict_set(trace_connect_list_host_avail,
 227         trace_connect->trace,
 228         xbt_strdup(trace_connect->element), NULL);
 229     break;
 230   case SURF_TRACE_CONNECT_KIND_POWER:
 231     xbt_dict_set(trace_connect_list_power, trace_connect->trace,
 232         xbt_strdup(trace_connect->element), NULL);
 233     break;
 234   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 235     xbt_dict_set(trace_connect_list_link_avail,
 236         trace_connect->trace,
 237         xbt_strdup(trace_connect->element), NULL);
 238     break;
 239   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 240     xbt_dict_set(trace_connect_list_bandwidth,
 241         trace_connect->trace,
 242         xbt_strdup(trace_connect->element), NULL);
 243     break;
 244   case SURF_TRACE_CONNECT_KIND_LATENCY:
 245     xbt_dict_set(trace_connect_list_latency, trace_connect->trace,
 246         xbt_strdup(trace_connect->element), NULL);
 247     break;
 248   default:
 249         surf_parse_error("Cannot connect trace %s to %s: kind of trace unknown",
 250         trace_connect->trace, trace_connect->element);
 251     break;
 252   }
 253 }
 254
 255 /**
 256  * \brief Make a new routing component to the platform
 257  *
 258  * Add a new autonomous system to the platform. Any elements (such as host,
 259  * router or sub-AS) added after this call and before the corresponding call
 260  * to sg_platf_new_AS_close() will be added to this AS.
 261  *
 262  * Once this function was called, the configuration concerning the used
 263  * models cannot be changed anymore.
 264  *
 265  * @param AS_id name of this autonomous system. Must be unique in the platform
 266  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 267  */
 268 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 269 {
 270   XBT_DEBUG("routing_AS_begin");
 271   routing_model_description_t model = NULL;
 272
 273   xbt_assert(!xbt_lib_get_or_null
 274              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 275              "The AS \"%s\" already exists", AS->id);
 276
 277   _sg_cfg_init_status = 2; /* horrible hack: direct access to the global
 278                             * controlling the level of configuration to prevent
 279                             * any further config */
 280
 281   /* search the routing model */
 282   switch(AS->routing){
 283     case A_surfxml_AS_routing_Cluster:               model = &routing_models[SURF_MODEL_CLUSTER];break;
 284     case A_surfxml_AS_routing_Cluster___torus:       model = &routing_models[SURF_MODEL_TORUS_CLUSTER];break;
 285     case A_surfxml_AS_routing_Cluster___fat___tree:  model = &routing_models[SURF_MODEL_FAT_TREE_CLUSTER];break;
 286     case A_surfxml_AS_routing_Dijkstra:              model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 287     case A_surfxml_AS_routing_DijkstraCache:         model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 288     case A_surfxml_AS_routing_Floyd:                 model = &routing_models[SURF_MODEL_FLOYD];break;
 289     case A_surfxml_AS_routing_Full:                  model = &routing_models[SURF_MODEL_FULL];break;
 290     case A_surfxml_AS_routing_None:                  model = &routing_models[SURF_MODEL_NONE];break;
 291     case A_surfxml_AS_routing_Vivaldi:               model = &routing_models[SURF_MODEL_VIVALDI];break;
 292     default: xbt_die("Not a valid model!!!");
 293     break;
 294   }
 295
 296   /* make a new routing component */
 297   simgrid::surf::As *new_as = model->create();
 298
 299   new_as->p_modelDesc = model;
 300   new_as->p_hierarchy = SURF_ROUTING_NULL;
 301   new_as->p_name = xbt_strdup(AS->id);
 302
 303   simgrid::surf::NetCard *info =
 304     new simgrid::surf::NetCardImpl(xbt_strdup(new_as->p_name),
 305                                             -1,
 306                                             SURF_NETWORK_ELEMENT_AS,
 307                                             current_routing);
 308   if (current_routing == NULL && routing_platf->p_root == NULL) {
 309
 310     /* it is the first one */
 311     new_as->p_routingFather = NULL;
 312     routing_platf->p_root = new_as;
 313     info->setId(-1);
 314   } else if (current_routing != NULL && routing_platf->p_root != NULL) {
 315
 316     xbt_assert(!xbt_dict_get_or_null
 317                (current_routing->p_routingSons, AS->id),
 318                "The AS \"%s\" already exists", AS->id);
 319     /* it is a part of the tree */
 320     new_as->p_routingFather = current_routing;
 321     /* set the father behavior */
 322     if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 323       current_routing->p_hierarchy = SURF_ROUTING_RECURSIVE;
 324     /* add to the sons dictionary */
 325     xbt_dict_set(current_routing->p_routingSons, AS->id,
 326                  (void *) new_as, NULL);
 327     /* add to the father element list */
 328     info->setId(current_routing->parseAS(info));
 329   } else {
 330     THROWF(arg_error, 0, "All defined components must belong to a AS");
 331   }
 332
 333   xbt_lib_set(as_router_lib, info->getName(), ROUTING_ASR_LEVEL,
 334               (void *) info);
 335   XBT_DEBUG("Having set name '%s' id '%d'", new_as->p_name, info->getId());
 336
 337   /* set the new current component of the tree */
 338   current_routing = new_as;
 339   current_routing->p_netcard = info;
 340
 341   simgrid::surf::netcardCreatedCallbacks(info);
 342   simgrid::surf::asCreatedCallbacks(new_as);
 343 }
 344
 345 /**
 346  * \brief Specify that the current description of AS is finished
 347  *
 348  * Once you've declared all the content of your AS, you have to close
 349  * it with this call. Your AS is not usable until you call this function.
 350  *
 351  * @fixme: this call is not as robust as wanted: bad things WILL happen
 352  * if you call it twice for the same AS, or if you forget calling it, or
 353  * even if you add stuff to a closed AS
 354  *
 355  */
 356 void routing_AS_end()
 357 {
 358
 359   if (current_routing == NULL) {
 360     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 361   } else {
 362     if (current_routing->p_modelDesc->end)
 363       current_routing->p_modelDesc->end(current_routing);
 364     current_routing = current_routing->p_routingFather;
 365   }
 366 }
 367
 368 /* Aux Business methods */
 369
 370 /**
 371  * \brief Get the AS father and the first elements of the chain
 372  *
 373  * \param src the source host name
 374  * \param dst the destination host name
 375  *
 376  * Get the common father of the to processing units, and the first different
 377  * father in the chain
 378  */
 379 static void elements_father(sg_netcard_t src, sg_netcard_t dst,
 380                             AS_t * res_father,
 381                             AS_t * res_src,
 382                             AS_t * res_dst)
 383 {
 384   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 385 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 386   simgrid::surf::As *src_as, *dst_as;
 387   simgrid::surf::As *path_src[ELEMENTS_FATHER_MAXDEPTH];
 388   simgrid::surf::As *path_dst[ELEMENTS_FATHER_MAXDEPTH];
 389   int index_src = 0;
 390   int index_dst = 0;
 391   simgrid::surf::As *current;
 392   simgrid::surf::As *current_src;
 393   simgrid::surf::As *current_dst;
 394   simgrid::surf::As *father;
 395
 396   /* (1) find the as where the src and dst are located */
 397   sg_netcard_t src_data = src;
 398   sg_netcard_t dst_data = dst;
 399   src_as = src_data->getRcComponent();
 400   dst_as = dst_data->getRcComponent();
 401 #ifndef NDEBUG
 402   char* src_name = src_data->getName();
 403   char* dst_name = dst_data->getName();
 404 #endif
 405
 406   xbt_assert(src_as && dst_as,
 407              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 408
 409   /* (2) find the path to the root routing component */
 410   for (current = src_as; current != NULL; current = current->p_routingFather) {
 411     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 412       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 413     path_src[index_src++] = current;
 414   }
 415   for (current = dst_as; current != NULL; current = current->p_routingFather) {
 416     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 417       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 418     path_dst[index_dst++] = current;
 419   }
 420
 421   /* (3) find the common father */
 422   do {
 423     current_src = path_src[--index_src];
 424     current_dst = path_dst[--index_dst];
 425   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 426
 427   /* (4) they are not in the same routing component, make the path */
 428   if (current_src == current_dst)
 429     father = current_src;
 430   else
 431     father = path_src[index_src + 1];
 432
 433   /* (5) result generation */
 434   *res_father = father;         /* first the common father of src and dst */
 435   *res_src = current_src;       /* second the first different father of src */
 436   *res_dst = current_dst;       /* three  the first different father of dst */
 437
 438 #undef ELEMENTS_FATHER_MAXDEPTH
 439 }
 440
 441 /* Global Business methods */
 442
 443 /**
 444  * \brief Recursive function for get_route_latency
 445  *
 446  * \param src the source host name
 447  * \param dst the destination host name
 448  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 449  * \param *latency the latency, if needed
 450  *
 451  * This function is called by "get_route" and "get_latency". It allows to walk
 452  * recursively through the ASes tree.
 453  */
 454 static void _get_route_and_latency(
 455   simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst,
 456   xbt_dynar_t * links, double *latency)
 457 {
 458   s_sg_platf_route_cbarg_t route = SG_PLATF_ROUTE_INITIALIZER;
 459   memset(&route,0,sizeof(route));
 460
 461   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 462   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->getName(), dst->getName());
 463
 464   /* Find how src and dst are interconnected */
 465   simgrid::surf::As *common_father, *src_father, *dst_father;
 466   elements_father(src, dst, &common_father, &src_father, &dst_father);
 467   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 468       common_father->p_name, src_father->p_name, dst_father->p_name);
 469
 470   /* Check whether a direct bypass is defined */
 471   sg_platf_route_cbarg_t e_route_bypass = NULL;
 472   //FIXME:REMOVE:if (common_father->get_bypass_route)
 473
 474   e_route_bypass = common_father->getBypassRoute(src, dst, latency);
 475
 476   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 477   if (e_route_bypass) {
 478     xbt_dynar_merge(links, &e_route_bypass->link_list);
 479     generic_free_route(e_route_bypass);
 480     return;
 481   }
 482
 483   /* If src and dst are in the same AS, life is good */
 484   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 485     route.link_list = *links;
 486     common_father->getRouteAndLatency(src, dst, &route, latency);
 487     // if vivaldi latency+=vivaldi(src,dst)
 488     return;
 489   }
 490
 491   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 492
 493   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 494   // Find the net_card corresponding to father
 495   simgrid::surf::NetCard *src_father_netcard = src_father->p_netcard;
 496   simgrid::surf::NetCard *dst_father_netcard = dst_father->p_netcard;
 497
 498   common_father->getRouteAndLatency(src_father_netcard, dst_father_netcard,
 499                                     &route, latency);
 500
 501   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 502       "bad gateways for route from \"%s\" to \"%s\"", src->getName(), dst->getName());
 503
 504   sg_netcard_t src_gateway_net_elm = route.gw_src;
 505   sg_netcard_t dst_gateway_net_elm = route.gw_dst;
 506
 507   /* If source gateway is not our source, we have to recursively find our way up to this point */
 508   if (src != src_gateway_net_elm)
 509     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 510   xbt_dynar_merge(links, &route.link_list);
 511
 512   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 513   if (dst_gateway_net_elm != dst)
 514     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 515
 516 }
 517
 518 AS_t surf_platf_get_root(routing_platf_t platf){
 519   return platf->p_root;
 520 }
 521
 522 e_surf_network_element_type_t surf_routing_edge_get_rc_type(sg_netcard_t netcard){
 523   return netcard->getRcType();
 524 }
 525
 526 namespace simgrid {
 527 namespace surf {
 528
 529 /**
 530  * \brief Find a route between hosts
 531  *
 532  * \param src the network_element_t for src host
 533  * \param dst the network_element_t for dst host
 534  * \param route where to store the list of links.
 535  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 536  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 537  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 538  * \pre route!=NULL
 539  *
 540  * walk through the routing components tree and find a route between hosts
 541  * by calling each "get_route" function in each routing component.
 542  */
 543 void RoutingPlatf::getRouteAndLatency(NetCard *src, NetCard *dst, xbt_dynar_t* route, double *latency)
 544 {
 545   XBT_DEBUG("routing_get_route_and_latency from %s to %s", src->getName(), dst->getName());
 546   if (NULL == *route) {
 547     xbt_dynar_reset(routing_platf->p_lastRoute);
 548     *route = routing_platf->p_lastRoute;
 549   }
 550
 551   _get_route_and_latency(src, dst, route, latency);
 552
 553   xbt_assert(!latency || *latency >= 0.0,
 554              "negative latency on route between \"%s\" and \"%s\"", src->getName(), dst->getName());
 555 }
 556
 557 xbt_dynar_t RoutingPlatf::getOneLinkRoutes(){
 558   return recursiveGetOneLinkRoutes(p_root);
 559 }
 560
 561 xbt_dynar_t RoutingPlatf::recursiveGetOneLinkRoutes(As *rc)
 562 {
 563   xbt_dynar_t ret = xbt_dynar_new(sizeof(Onelink*), xbt_free_f);
 564
 565   //adding my one link routes
 566   xbt_dynar_t onelink_mine = rc->getOneLinkRoutes();
 567   if (onelink_mine)
 568     xbt_dynar_merge(&ret,&onelink_mine);
 569
 570   //recursing
 571   char *key;
 572   xbt_dict_cursor_t cursor = NULL;
 573   AS_t rc_child;
 574   xbt_dict_foreach(rc->p_routingSons, cursor, key, rc_child) {
 575     xbt_dynar_t onelink_child = recursiveGetOneLinkRoutes(rc_child);
 576     if (onelink_child)
 577       xbt_dynar_merge(&ret,&onelink_child);
 578   }
 579   return ret;
 580 }
 581
 582 }
 583 }
 584
 585 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 586 {
 587   simgrid::surf::NetCard *rc = sg_netcard_by_name_or_null(name);
 588   if (rc)
 589     return rc->getRcType();
 590
 591   return SURF_NETWORK_ELEMENT_NULL;
 592 }
 593
 594 /**
 595  * \brief Generic method: create the global routing schema
 596  *
 597  * Make a global routing structure and set all the parsing functions.
 598  */
 599 void routing_model_create( void *loopback)
 600 {
 601   /* config the uniq global routing */
 602   routing_platf = new simgrid::surf::RoutingPlatf();
 603   routing_platf->p_root = NULL;
 604   routing_platf->p_loopback = loopback;
 605   routing_platf->p_lastRoute = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 606   /* no current routing at moment */
 607   current_routing = NULL;
 608 }
 609
 610
 611 /* ************************************************** */
 612 /* ********** PATERN FOR NEW ROUTING **************** */
 613
 614 /* The minimal configuration of a new routing model need the next functions,
 615  * also you need to set at the start of the file, the new model in the model
 616  * list. Remember keep the null ending of the list.
 617  */
 618 /*** Routing model structure ***/
 619 // typedef struct {
 620 //   s_routing_component_t generic_routing;
 621 //   /* things that your routing model need */
 622 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 623
 624 /*** Parse routing model functions ***/
 625 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 626 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 627 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 628 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 629 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 630
 631 /*** Business methods ***/
 632 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 633 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 634 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 635
 636 /*** Creation routing model functions ***/
 637 // static void* model_NEW_create(void) {
 638 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 639 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 640 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 641 //   new_component->generic_routing.set_route = model_NEW_set_route;
 642 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 643 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 644 //   new_component->generic_routing.get_route = NEW_get_route;
 645 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 646 //   new_component->generic_routing.finalize = NEW_finalize;
 647 //   /* initialization of internal structures */
 648 //   return new_component;
 649 // } /* mandatory */
 650 // static void  model_NEW_load(void) {}   /* mandatory */
 651 // static void  model_NEW_unload(void) {} /* mandatory */
 652 // static void  model_NEW_end(void) {}    /* mandatory */
 653
 654 /* ************************************************************************** */
 655 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 656
 657 void routing_cluster_add_backbone(void* bb) {
 658   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER],
 659         "You have to be in model Cluster to use tag backbone!");
 660   xbt_assert(!static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone, "The backbone link is already defined!");
 661   static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone =
 662     static_cast<simgrid::surf::Link*>(bb);
 663   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->p_name);
 664 }
 665
 666 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 667 {
 668   int start, end, i;
 669   char *groups , *host_id , *link_id = NULL;
 670   unsigned int iter;
 671   xbt_dynar_t radical_elements;
 672   xbt_dynar_t radical_ends;
 673
 674   //Make all hosts
 675   radical_elements = xbt_str_split(cabinet->radical, ",");
 676   xbt_dynar_foreach(radical_elements, iter, groups) {
 677
 678     radical_ends = xbt_str_split(groups, "-");
 679     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 680
 681     switch (xbt_dynar_length(radical_ends)) {
 682     case 1:
 683       end = start;
 684       break;
 685     case 2:
 686       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 687       break;
 688     default:
 689       surf_parse_error("Malformed radical");
 690       break;
 691     }
 692     s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 693     memset(&host, 0, sizeof(host));
 694     host.initiallyOn   = 1;
 695     host.pstate        = 0;
 696     host.speed_scale   = 1.0;
 697     host.core_amount   = 1;
 698
 699     s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 700     memset(&link, 0, sizeof(link));
 701     link.initiallyOn = 1;
 702     link.policy    = SURF_LINK_FULLDUPLEX;
 703     link.latency   = cabinet->lat;
 704     link.bandwidth = cabinet->bw;
 705
 706     s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
 707     memset(&host_link, 0, sizeof(host_link));
 708
 709     for (i = start; i <= end; i++) {
 710       host_id                      = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 711       link_id                      = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 712       host.id                      = host_id;
 713       link.id                      = link_id;
 714       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 715       xbt_dynar_push(host.speed_peak,&cabinet->speed);
 716       sg_platf_new_host(&host);
 717       xbt_dynar_free(&host.speed_peak);
 718       sg_platf_new_link(&link);
 719
 720       char* link_up       = bprintf("%s_UP",link_id);
 721       char* link_down     = bprintf("%s_DOWN",link_id);
 722       host_link.id        = host_id;
 723       host_link.link_up   = link_up;
 724       host_link.link_down = link_down;
 725       sg_platf_new_netcard(&host_link);
 726
 727       free(host_id);
 728       free(link_id);
 729       free(link_up);
 730       free(link_down);
 731     }
 732
 733     xbt_dynar_free(&radical_ends);
 734   }
 735   xbt_dynar_free(&radical_elements);
 736 }
 737
 738 void routing_new_cluster(sg_platf_cluster_cbarg_t cluster)
 739 {
 740   using simgrid::surf::AsCluster;
 741   using simgrid::surf::AsClusterTorus;
 742   using simgrid::surf::AsClusterFatTree;
 743
 744   char *host_id, *groups, *link_id = NULL;
 745   xbt_dict_t patterns = NULL;
 746   int rankId=0;
 747
 748   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 749   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 750
 751   unsigned int iter;
 752   int start, end, i;
 753   xbt_dynar_t radical_elements;
 754   xbt_dynar_t radical_ends;
 755
 756   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 757       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 758     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 759     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 760     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 761     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 762   }
 763
 764   /* parse the topology attribute. If we are not in a flat cluster,
 765    * switch to the right mode and initialize the routing with
 766    * the parameters in topo_parameters attribute
 767    */
 768   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 769   AS.id = cluster->id;
 770
 771   if(cluster->topology == SURF_CLUSTER_TORUS){
 772     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Torus_Cluster\">", cluster->id);
 773     AS.routing = A_surfxml_AS_routing_Cluster___torus;
 774     sg_platf_new_AS_begin(&AS);
 775     ((AsClusterTorus*)current_routing)->parse_specific_arguments(cluster);
 776   }
 777   else if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 778     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Fat_Tree_Cluster\">", cluster->id);
 779     AS.routing = A_surfxml_AS_routing_Cluster___fat___tree;
 780     sg_platf_new_AS_begin(&AS);
 781     ((AsClusterFatTree*)current_routing)->parse_specific_arguments(cluster);
 782   }
 783
 784   else{
 785     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 786     AS.routing = A_surfxml_AS_routing_Cluster;
 787     sg_platf_new_AS_begin(&AS);
 788   }
 789
 790   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 791       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 792       ((AsCluster*)current_routing)->p_has_loopback=1;
 793   }
 794
 795   if(cluster->limiter_link!=0){
 796       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 797       ((AsCluster*)current_routing)->p_has_limiter=1;
 798   }
 799
 800
 801
 802   current_routing->p_linkUpDownList
 803             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 804
 805   //Make all hosts
 806   radical_elements = xbt_str_split(cluster->radical, ",");
 807   xbt_dynar_foreach(radical_elements, iter, groups) {
 808
 809     radical_ends = xbt_str_split(groups, "-");
 810     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 811
 812     switch (xbt_dynar_length(radical_ends)) {
 813     case 1:
 814       end = start;
 815       break;
 816     case 2:
 817       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 818       break;
 819     default:
 820       surf_parse_error("Malformed radical");
 821       break;
 822     }
 823     for (i = start; i <= end; i++) {
 824       host_id =
 825           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 826       link_id = bprintf("%s_link_%d", cluster->id, i);
 827
 828       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 829
 830       memset(&host, 0, sizeof(host));
 831       host.id = host_id;
 832       if ((cluster->properties != NULL) && (!xbt_dict_is_empty(cluster->properties))) {
 833           xbt_dict_cursor_t cursor=NULL;
 834           char *key,*data;
 835           host.properties = xbt_dict_new();
 836
 837           xbt_dict_foreach(cluster->properties,cursor,key,data) {
 838                   xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 839           }
 840       }
 841       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 842         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 843         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 844         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 845         host.speed_trace = tmgr_trace_new_from_file(avail_file);
 846         xbt_free(avail_file);
 847       } else {
 848         XBT_DEBUG("\tavailability_file=\"\"");
 849       }
 850
 851       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 852         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 853         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 854         host.state_trace = tmgr_trace_new_from_file(avail_file);
 855         xbt_free(avail_file);
 856       } else {
 857         XBT_DEBUG("\tstate_file=\"\"");
 858       }
 859
 860       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 861       xbt_dynar_push(host.speed_peak,&cluster->speed);
 862       host.pstate = 0;
 863
 864       //host.power_peak = cluster->power;
 865       host.speed_scale = 1.0;
 866       host.core_amount = cluster->core_amount;
 867       host.initiallyOn = 1;
 868       host.coord = "";
 869       sg_platf_new_host(&host);
 870       xbt_dynar_free(&host.speed_peak);
 871       XBT_DEBUG("</host>");
 872
 873       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 874                 cluster->bw, cluster->lat);
 875
 876
 877       s_surf_parsing_link_up_down_t info_lim, info_loop;
 878       // All links are saved in a matrix;
 879       // every row describes a single node; every node
 880       // may have multiple links.
 881       // the first column may store a link from x to x if p_has_loopback is set
 882       // the second column may store a limiter link if p_has_limiter is set
 883       // other columns are to store one or more link for the node
 884
 885       //add a loopback link
 886       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 887         char *tmp_link = bprintf("%s_loopback", link_id);
 888         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 889                 cluster->limiter_link);
 890
 891
 892         memset(&link, 0, sizeof(link));
 893         link.id        = tmp_link;
 894         link.bandwidth = cluster->loopback_bw;
 895         link.latency   = cluster->loopback_lat;
 896         link.initiallyOn = 1;
 897         link.policy    = SURF_LINK_FATPIPE;
 898         sg_platf_new_link(&link);
 899         info_loop.link_up   = Link::byName(tmp_link);
 900         info_loop.link_down = info_loop.link_up;
 901         free(tmp_link);
 902         xbt_dynar_set(current_routing->p_linkUpDownList,
 903           rankId*(static_cast<AsCluster*>(current_routing))->p_nb_links_per_node, &info_loop);
 904       }
 905
 906       //add a limiter link (shared link to account for maximal bandwidth of the node)
 907       if(cluster->limiter_link!=0){
 908         char *tmp_link = bprintf("%s_limiter", link_id);
 909         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 910                 cluster->limiter_link);
 911
 912
 913         memset(&link, 0, sizeof(link));
 914         link.id = tmp_link;
 915         link.bandwidth = cluster->limiter_link;
 916         link.latency = 0;
 917         link.initiallyOn = 1;
 918         link.policy = SURF_LINK_SHARED;
 919         sg_platf_new_link(&link);
 920         info_lim.link_up = Link::byName(tmp_link);
 921         info_lim.link_down = info_lim.link_up;
 922         free(tmp_link);
 923         auto as_cluster = static_cast<AsCluster*>(current_routing);
 924         xbt_dynar_set(current_routing->p_linkUpDownList,
 925             rankId*(as_cluster)->p_nb_links_per_node + as_cluster->p_has_loopback ,
 926             &info_lim);
 927
 928       }
 929
 930
 931       //call the cluster function that adds the others links
 932       if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 933         ((AsClusterFatTree*) current_routing)->addProcessingNode(i);
 934       }
 935       else {
 936       static_cast<AsCluster*>(current_routing)->create_links_for_node(cluster, i, rankId, rankId*
 937                   static_cast<AsCluster*>(current_routing)->p_nb_links_per_node
 938           + static_cast<AsCluster*>(current_routing)->p_has_loopback
 939           + static_cast<AsCluster*>(current_routing)->p_has_limiter );
 940       }
 941       xbt_free(link_id);
 942       xbt_free(host_id);
 943       rankId++;
 944     }
 945
 946     xbt_dynar_free(&radical_ends);
 947   }
 948   xbt_dynar_free(&radical_elements);
 949
 950   // For fat trees, the links must be created once all nodes have been added
 951   if(cluster->topology == SURF_CLUSTER_FAT_TREE) {
 952     static_cast<simgrid::surf::AsClusterFatTree*>(current_routing)->create_links();
 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 = SG_PLATF_ROUTER_INITIALIZER;
 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   ((AsCluster*)current_routing)->p_router = (simgrid::surf::NetCard*) 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.initiallyOn = 1;
 982     link.policy    = cluster->bb_sharing_policy;
 983
 984     sg_platf_new_link(&link);
 985
 986     routing_cluster_add_backbone(Link::byName(link_backbone));
 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 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
1002 {
1003   using simgrid::surf::NetCard;
1004   using simgrid::surf::AsCluster;
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->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
1022
1023   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
1024   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
1025   memset(&host, 0, sizeof(host));
1026   host.initiallyOn = 1;
1027   host.id = host_id;
1028
1029   host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
1030   xbt_dynar_push(host.speed_peak,&peer->speed);
1031   host.pstate = 0;
1032   //host.power_peak = peer->power;
1033   host.speed_scale = 1.0;
1034   host.speed_trace = peer->availability_trace;
1035   host.state_trace = peer->state_trace;
1036   host.core_amount = 1;
1037   sg_platf_new_host(&host);
1038   xbt_dynar_free(&host.speed_peak);
1039
1040   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
1041   memset(&link, 0, sizeof(link));
1042   link.initiallyOn = 1;
1043   link.policy  = SURF_LINK_SHARED;
1044   link.latency = peer->lat;
1045
1046   char* link_up = bprintf("%s_UP",link_id);
1047   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1048             peer->bw_out, peer->lat);
1049   link.id = link_up;
1050   link.bandwidth = peer->bw_out;
1051   sg_platf_new_link(&link);
1052
1053   char* link_down = bprintf("%s_DOWN",link_id);
1054   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1055             peer->bw_in, peer->lat);
1056   link.id = link_down;
1057   link.bandwidth = peer->bw_in;
1058   sg_platf_new_link(&link);
1059
1060   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1061   s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
1062   memset(&host_link, 0, sizeof(host_link));
1063   host_link.id        = host_id;
1064   host_link.link_up   = link_up;
1065   host_link.link_down = link_down;
1066   sg_platf_new_netcard(&host_link);
1067
1068   XBT_DEBUG("<router id=\"%s\"/>", router_id);
1069   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
1070   memset(&router, 0, sizeof(router));
1071   router.id = router_id;
1072   router.coord = peer->coord;
1073   sg_platf_new_router(&router);
1074   static_cast<AsCluster*>(current_routing)->p_router = static_cast<NetCard*>(xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL));
1075
1076   XBT_DEBUG("</AS>");
1077   sg_platf_new_AS_end();
1078   XBT_DEBUG(" ");
1079
1080   //xbt_dynar_free(&tab_elements_num);
1081   free(router_id);
1082   free(host_id);
1083   free(link_id);
1084   free(link_up);
1085   free(link_down);
1086 }
1087
1088 // static void routing_parse_Srandom(void)
1089 // {
1090 //   double mean, std, min, max, seed;
1091 //   char *random_id = A_surfxml_random_id;
1092 //   char *random_radical = A_surfxml_random_radical;
1093 //   char *rd_name = NULL;
1094 //   char *rd_value;
1095 //   mean = surf_parse_get_double(A_surfxml_random_mean);
1096 //   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1097 //   min = surf_parse_get_double(A_surfxml_random_min);
1098 //   max = surf_parse_get_double(A_surfxml_random_max);
1099 //   seed = surf_parse_get_double(A_surfxml_random_seed);
1100
1101 //   double res = 0;
1102 //   int i = 0;
1103 //   random_data_t random = xbt_new0(s_random_data_t, 1);
1104 //   char *tmpbuf;
1105
1106 //   xbt_dynar_t radical_elements;
1107 //   unsigned int iter;
1108 //   char *groups;
1109 //   int start, end;
1110 //   xbt_dynar_t radical_ends;
1111
1112 //   switch (A_surfxml_random_generator) {
1113 //   case AU_surfxml_random_generator:
1114 //   case A_surfxml_random_generator_NONE:
1115 //     random->generator = NONE;
1116 //     break;
1117 //   case A_surfxml_random_generator_DRAND48:
1118 //     random->generator = DRAND48;
1119 //     break;
1120 //   case A_surfxml_random_generator_RAND:
1121 //     random->generator = RAND;
1122 //     break;
1123 //   case A_surfxml_random_generator_RNGSTREAM:
1124 //     random->generator = RNGSTREAM;
1125 //     break;
1126 //   default:
1127 //     surf_parse_error("Invalid random generator");
1128 //     break;
1129 //   }
1130 //   random->seed = seed;
1131 //   random->min = min;
1132 //   random->max = max;
1133
1134 //   /* Check user stupidities */
1135 //   if (max < min)
1136 //     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1137 //   if (mean < min)
1138 //     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1139 //   if (mean > max)
1140 //     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1141
1142 //   /* normalize the mean and standard deviation before storing */
1143 //   random->mean = (mean - min) / (max - min);
1144 //   random->std = std / (max - min);
1145
1146 //   if (random->mean * (1 - random->mean) < random->std * random->std)
1147 //     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1148 //            random->mean, random->std);
1149
1150 //   XBT_DEBUG
1151 //       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1152 //        random_id, random->min, random->max, random->mean, random->std,
1153 //        (int)random->generator, random->seed, random_radical);
1154
1155 //   if (!random_value)
1156 //     random_value = xbt_dict_new_homogeneous(free);
1157
1158 //   if (!strcmp(random_radical, "")) {
1159 //     res = random_generate(random);
1160 //     rd_value = bprintf("%f", res);
1161 //     xbt_dict_set(random_value, random_id, rd_value, NULL);
1162 //   } else {
1163 //     radical_elements = xbt_str_split(random_radical, ",");
1164 //     xbt_dynar_foreach(radical_elements, iter, groups) {
1165 //       radical_ends = xbt_str_split(groups, "-");
1166 //       switch (xbt_dynar_length(radical_ends)) {
1167 //       case 1:
1168 //         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1169 //                    "Custom Random '%s' already exists !", random_id);
1170 //         res = random_generate(random);
1171 //         tmpbuf =
1172 //             bprintf("%s%d", random_id,
1173 //                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1174 //         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1175 //         xbt_free(tmpbuf);
1176 //         break;
1177
1178 //       case 2:
1179 //         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1180 //         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1181 //         for (i = start; i <= end; i++) {
1182 //           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1183 //                      "Custom Random '%s' already exists !", bprintf("%s%d",
1184 //                                                                     random_id,
1185 //                                                                     i));
1186 //           res = random_generate(random);
1187 //           tmpbuf = bprintf("%s%d", random_id, i);
1188 //           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1189 //           xbt_free(tmpbuf);
1190 //         }
1191 //         break;
1192 //       default:
1193 //         XBT_CRITICAL("Malformed radical");
1194 //         break;
1195 //       }
1196 //       res = random_generate(random);
1197 //       rd_name = bprintf("%s_router", random_id);
1198 //       rd_value = bprintf("%f", res);
1199 //       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1200
1201 //       xbt_dynar_free(&radical_ends);
1202 //     }
1203 //     free(rd_name);
1204 //     xbt_dynar_free(&radical_elements);
1205 //   }
1206 // }
1207
1208 static void check_disk_attachment()
1209 {
1210   xbt_lib_cursor_t cursor;
1211   char *key;
1212   void **data;
1213   simgrid::surf::NetCard *host_elm;
1214   xbt_lib_foreach(storage_lib, cursor, key, data) {
1215     if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
1216           simgrid::surf::Storage *storage = static_cast<simgrid::surf::Storage*>(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL));
1217           host_elm = sg_netcard_by_name_or_null(storage->p_attach);
1218           if(!host_elm)
1219                   surf_parse_error("Unable to attach storage %s: host %s doesn't exist.", storage->getName(), storage->p_attach);
1220     }
1221   }
1222 }
1223
1224 void routing_register_callbacks()
1225 {
1226   simgrid::surf::on_postparse.connect(routing_parse_postparse);
1227   simgrid::surf::on_postparse.connect(check_disk_attachment);
1228
1229   instr_routing_define_callbacks();
1230 }
1231
1232 /**
1233  * \brief Recursive function for finalize
1234  *
1235  * \param rc the source host name
1236  *
1237  * This fuction is call by "finalize". It allow to finalize the
1238  * AS or routing components. It delete all the structures.
1239  */
1240 static void finalize_rec(simgrid::surf::As *as) {
1241   xbt_dict_cursor_t cursor = NULL;
1242   char *key;
1243   AS_t elem;
1244
1245   xbt_dict_foreach(as->p_routingSons, cursor, key, elem) {
1246     finalize_rec(elem);
1247   }
1248
1249   delete as;;
1250 }
1251
1252 /** \brief Frees all memory allocated by the routing module */
1253 void routing_exit(void) {
1254   delete routing_platf;
1255 }
1256
1257 namespace simgrid {
1258 namespace surf {
1259
1260 RoutingPlatf::~RoutingPlatf()
1261 {
1262         xbt_dynar_free(&p_lastRoute);
1263         finalize_rec(p_root);
1264 }
1265
1266 }
1267 }
1268
1269 AS_t surf_AS_get_routing_root() {
1270   return routing_platf->p_root;
1271 }
1272
1273 const char *surf_AS_get_name(simgrid::surf::As *as) {
1274   return as->p_name;
1275 }
1276
1277 static simgrid::surf::As *surf_AS_recursive_get_by_name(
1278   simgrid::surf::As *current, const char * name)
1279 {
1280   xbt_dict_cursor_t cursor = NULL;
1281   char *key;
1282   AS_t elem;
1283   simgrid::surf::As *tmp = NULL;
1284
1285   if(!strcmp(current->p_name, name))
1286     return current;
1287
1288   xbt_dict_foreach(current->p_routingSons, cursor, key, elem) {
1289     tmp = surf_AS_recursive_get_by_name(elem, name);
1290     if(tmp != NULL ) {
1291         break;
1292     }
1293   }
1294   return tmp;
1295 }
1296
1297 simgrid::surf::As *surf_AS_get_by_name(const char * name)
1298 {
1299   simgrid::surf::As *as = surf_AS_recursive_get_by_name(routing_platf->p_root, name);
1300   if(as == NULL)
1301     XBT_WARN("Impossible to find an AS with name %s, please check your input", name);
1302   return as;
1303 }
1304
1305 xbt_dict_t surf_AS_get_routing_sons(simgrid::surf::As *as)
1306 {
1307   return as->p_routingSons;
1308 }
1309
1310 const char *surf_AS_get_model(simgrid::surf::As *as)
1311 {
1312   return as->p_modelDesc->name;
1313 }
1314
1315 xbt_dynar_t surf_AS_get_hosts(simgrid::surf::As *as)
1316 {
1317   xbt_dynar_t elms = as->p_indexNetworkElm;
1318   int count = xbt_dynar_length(elms);
1319   xbt_dynar_t res =  xbt_dynar_new(sizeof(sg_host_t), NULL);
1320   for (int index = 0; index < count; index++) {
1321      sg_netcard_t relm =
1322       xbt_dynar_get_as(elms, index, simgrid::surf::NetCard*);
1323      sg_host_t delm = simgrid::s4u::Host::by_name_or_null(relm->getName());
1324      if (delm!=NULL) {
1325        xbt_dynar_push(res, &delm);
1326      }
1327   }
1328   return res;
1329 }
1330
1331 void surf_AS_get_graph(AS_t as, xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges) {
1332   as->getGraph(graph, nodes, edges);
1333 }