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
  45 xbt_lib_t as_router_lib;
  46 int ROUTING_ASR_LEVEL;          //Routing level
  47 int COORD_ASR_LEVEL;            //Coordinates level
  48 int NS3_ASR_LEVEL;              //host node for ns3
  49 int ROUTING_PROP_ASR_LEVEL;     //Where the properties are stored
  50
  51 static xbt_dict_t random_value = NULL;
  52
  53
  54 /** @brief Retrieve a netcard from its name
  55  *
  56  * Netcards are the thing that connect host or routers to the network
  57  */
  58 simgrid::surf::NetCard *sg_netcard_by_name_or_null(const char *name)
  59 {
  60   sg_host_t h = sg_host_by_name(name);
  61   simgrid::surf::NetCard *net_elm = h==NULL?NULL: h->pimpl_netcard;
  62   if (!net_elm)
  63     net_elm = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, name, ROUTING_ASR_LEVEL);
  64   return net_elm;
  65 }
  66
  67 /* Global vars */
  68 simgrid::surf::RoutingPlatf *routing_platf = NULL;
  69
  70 /* global parse functions */
  71 extern xbt_dynar_t mount_list;
  72
  73 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route, surf, "Routing part of surf");
  74
  75 /** The current AS in the parsing */
  76 static simgrid::surf::As *current_routing = NULL;
  77 simgrid::surf::As* routing_get_current()
  78 {
  79   return current_routing;
  80 }
  81
  82 static void routing_parse_postparse(void);
  83
  84 /* this lines are only for replace use like index in the model table */
  85 typedef enum {
  86   SURF_MODEL_FULL = 0,
  87   SURF_MODEL_FLOYD,
  88   SURF_MODEL_DIJKSTRA,
  89   SURF_MODEL_DIJKSTRACACHE,
  90   SURF_MODEL_NONE,
  91   SURF_MODEL_VIVALDI,
  92   SURF_MODEL_CLUSTER,
  93   SURF_MODEL_TORUS_CLUSTER,
  94   SURF_MODEL_FAT_TREE_CLUSTER,
  95 } e_routing_types;
  96
  97 struct s_model_type routing_models[] = {
  98   {"Full",
  99    "Full routing data (fast, large memory requirements, fully expressive)",
 100    model_full_create, model_full_end},
 101   {"Floyd",
 102    "Floyd routing data (slow initialization, fast lookup, lesser memory requirements, shortest path routing only)",
 103    model_floyd_create, model_floyd_end},
 104   {"Dijkstra",
 105    "Dijkstra routing data (fast initialization, slow lookup, small memory requirements, shortest path routing only)",
 106    model_dijkstra_create, model_dijkstra_both_end},
 107   {"DijkstraCache",
 108    "Dijkstra routing data (fast initialization, fast lookup, small memory requirements, shortest path routing only)",
 109    model_dijkstracache_create, model_dijkstra_both_end},
 110   {"none", "No routing (Unless you know what you are doing, avoid using this mode in combination with a non Constant network model).",
 111    model_none_create,  NULL},
 112   {"Vivaldi", "Vivaldi routing",
 113    model_vivaldi_create, NULL},
 114   {"Cluster", "Cluster routing",
 115    model_cluster_create, NULL},
 116   {"Torus_Cluster", "Torus Cluster routing",
 117    model_torus_cluster_create, NULL},
 118   {"Fat_Tree_Cluster", "Fat Tree Cluster routing",
 119    model_fat_tree_cluster_create, NULL},
 120   {NULL, NULL, NULL, NULL}
 121 };
 122
 123 /**
 124  * \brief Add a netcard connecting an host to the network element list
 125  * FIXME: integrate into host constructor
 126  */
 127 void sg_platf_new_netcard(sg_platf_host_link_cbarg_t netcard)
 128 {
 129   simgrid::surf::NetCard *info = sg_host_by_name(netcard->id)->pimpl_netcard;
 130   xbt_assert(info, "Host '%s' not found!", netcard->id);
 131   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER] ||
 132       current_routing->p_modelDesc == &routing_models[SURF_MODEL_VIVALDI],
 133       "You have to be in model Cluster to use tag host_link!");
 134
 135   s_surf_parsing_link_up_down_t link_up_down;
 136   link_up_down.link_up = Link::byName(netcard->link_up);
 137   link_up_down.link_down = Link::byName(netcard->link_down);
 138
 139   xbt_assert(link_up_down.link_up, "Link '%s' not found!",netcard->link_up);
 140   xbt_assert(link_up_down.link_down, "Link '%s' not found!",netcard->link_down);
 141
 142   if(!current_routing->p_linkUpDownList)
 143     current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 144
 145   // If dynar is is greater than netcard id and if the host_link is already defined
 146   if((int)xbt_dynar_length(current_routing->p_linkUpDownList) > info->getId() &&
 147       xbt_dynar_get_as(current_routing->p_linkUpDownList, info->getId(), void*))
 148         surf_parse_error("Host_link for '%s' is already defined!",netcard->id);
 149
 150   XBT_DEBUG("Push Host_link for host '%s' to position %d", info->getName(), info->getId());
 151   xbt_dynar_set_as(current_routing->p_linkUpDownList, info->getId(), s_surf_parsing_link_up_down_t, link_up_down);
 152 }
 153
 154 /**
 155  * \brief Add a "host" to the network element list
 156  */
 157 simgrid::surf::NetCard *routing_add_host(
 158   simgrid::surf::As* current_routing, sg_platf_host_cbarg_t host)
 159 {
 160   if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 161     current_routing->p_hierarchy = SURF_ROUTING_BASE;
 162   xbt_assert(!sg_host_by_name(host->id),
 163                      "Reading a host, processing unit \"%s\" already exists", host->id);
 164
 165   simgrid::surf::NetCard *netcard =
 166     new simgrid::surf::NetCardImpl(xbt_strdup(host->id),
 167                                                     -1,
 168                                                     SURF_NETWORK_ELEMENT_HOST,
 169                                                     current_routing);
 170   netcard->setId(current_routing->parsePU(netcard));
 171   sg_host_t h = sg_host_by_name_or_create(host->id);
 172   h->pimpl_netcard = netcard;
 173   XBT_DEBUG("Having set name '%s' id '%d'", host->id, netcard->getId());
 174   simgrid::surf::netcardCreatedCallbacks(netcard);
 175
 176   if(mount_list){
 177     xbt_lib_set(storage_lib, host->id, ROUTING_STORAGE_HOST_LEVEL, (void *) mount_list);
 178     mount_list = NULL;
 179   }
 180
 181   if (host->coord && strcmp(host->coord, "")) {
 182     unsigned int cursor;
 183     char*str;
 184
 185     if (!COORD_HOST_LEVEL)
 186       xbt_die ("To use host coordinates, please add --cfg=network/coordinates:yes to your command line");
 187     /* Pre-parse the host coordinates -- FIXME factorize with routers by overloading the routing->parse_PU function*/
 188     xbt_dynar_t ctn_str = xbt_str_split_str(host->coord, " ");
 189     xbt_dynar_t ctn = xbt_dynar_new(sizeof(double),NULL);
 190     xbt_dynar_foreach(ctn_str,cursor, str) {
 191       double val = atof(str);
 192       xbt_dynar_push(ctn,&val);
 193     }
 194     xbt_dynar_shrink(ctn, 0);
 195     xbt_dynar_free(&ctn_str);
 196     h->extension_set(COORD_HOST_LEVEL, (void *) ctn);
 197     XBT_DEBUG("Having set host coordinates for '%s'",host->id);
 198   }
 199
 200   return netcard;
 201 }
 202
 203 void sg_platf_new_trace(sg_platf_trace_cbarg_t trace)
 204 {
 205   tmgr_trace_t tmgr_trace;
 206   if (!trace->file || strcmp(trace->file, "") != 0) {
 207     tmgr_trace = tmgr_trace_new_from_file(trace->file);
 208   } else {
 209     xbt_assert(strcmp(trace->pc_data, ""),
 210         "Trace '%s' must have either a content, or point to a file on disk.",trace->id);
 211     tmgr_trace = tmgr_trace_new_from_string(trace->id, trace->pc_data, trace->periodicity);
 212   }
 213   xbt_dict_set(traces_set_list, trace->id, (void *) tmgr_trace, NULL);
 214 }
 215
 216 void sg_platf_trace_connect(sg_platf_trace_connect_cbarg_t trace_connect)
 217 {
 218   xbt_assert(xbt_dict_get_or_null(traces_set_list, trace_connect->trace),
 219               "Cannot connect trace %s to %s: trace unknown",
 220               trace_connect->trace,
 221               trace_connect->element);
 222
 223   switch (trace_connect->kind) {
 224   case SURF_TRACE_CONNECT_KIND_HOST_AVAIL:
 225     xbt_dict_set(trace_connect_list_host_avail,
 226         trace_connect->trace,
 227         xbt_strdup(trace_connect->element), NULL);
 228     break;
 229   case SURF_TRACE_CONNECT_KIND_POWER:
 230     xbt_dict_set(trace_connect_list_host_speed, trace_connect->trace,
 231         xbt_strdup(trace_connect->element), NULL);
 232     break;
 233   case SURF_TRACE_CONNECT_KIND_LINK_AVAIL:
 234     xbt_dict_set(trace_connect_list_link_avail,
 235         trace_connect->trace,
 236         xbt_strdup(trace_connect->element), NULL);
 237     break;
 238   case SURF_TRACE_CONNECT_KIND_BANDWIDTH:
 239     xbt_dict_set(trace_connect_list_link_bw,
 240         trace_connect->trace,
 241         xbt_strdup(trace_connect->element), NULL);
 242     break;
 243   case SURF_TRACE_CONNECT_KIND_LATENCY:
 244     xbt_dict_set(trace_connect_list_link_lat, trace_connect->trace,
 245         xbt_strdup(trace_connect->element), NULL);
 246     break;
 247   default:
 248         surf_parse_error("Cannot connect trace %s to %s: kind of trace unknown",
 249         trace_connect->trace, trace_connect->element);
 250     break;
 251   }
 252 }
 253
 254 /**
 255  * \brief Make a new routing component to the platform
 256  *
 257  * Add a new autonomous system to the platform. Any elements (such as host,
 258  * router or sub-AS) added after this call and before the corresponding call
 259  * to sg_platf_new_AS_close() will be added to this AS.
 260  *
 261  * Once this function was called, the configuration concerning the used
 262  * models cannot be changed anymore.
 263  *
 264  * @param AS_id name of this autonomous system. Must be unique in the platform
 265  * @param wanted_routing_type one of Full, Floyd, Dijkstra or similar. Full list in the variable routing_models, in src/surf/surf_routing.c
 266  */
 267 void routing_AS_begin(sg_platf_AS_cbarg_t AS)
 268 {
 269   XBT_DEBUG("routing_AS_begin");
 270   routing_model_description_t model = NULL;
 271
 272   xbt_assert(!xbt_lib_get_or_null
 273              (as_router_lib, AS->id, ROUTING_ASR_LEVEL),
 274              "The AS \"%s\" already exists", AS->id);
 275
 276   _sg_cfg_init_status = 2; /* horrible hack: direct access to the global
 277                             * controlling the level of configuration to prevent
 278                             * any further config */
 279
 280   /* search the routing model */
 281   switch(AS->routing){
 282     case A_surfxml_AS_routing_Cluster:               model = &routing_models[SURF_MODEL_CLUSTER];break;
 283     case A_surfxml_AS_routing_Cluster___torus:       model = &routing_models[SURF_MODEL_TORUS_CLUSTER];break;
 284     case A_surfxml_AS_routing_Cluster___fat___tree:  model = &routing_models[SURF_MODEL_FAT_TREE_CLUSTER];break;
 285     case A_surfxml_AS_routing_Dijkstra:              model = &routing_models[SURF_MODEL_DIJKSTRA];break;
 286     case A_surfxml_AS_routing_DijkstraCache:         model = &routing_models[SURF_MODEL_DIJKSTRACACHE];break;
 287     case A_surfxml_AS_routing_Floyd:                 model = &routing_models[SURF_MODEL_FLOYD];break;
 288     case A_surfxml_AS_routing_Full:                  model = &routing_models[SURF_MODEL_FULL];break;
 289     case A_surfxml_AS_routing_None:                  model = &routing_models[SURF_MODEL_NONE];break;
 290     case A_surfxml_AS_routing_Vivaldi:               model = &routing_models[SURF_MODEL_VIVALDI];break;
 291     default: xbt_die("Not a valid model!!!");
 292     break;
 293   }
 294
 295   /* make a new routing component */
 296   simgrid::surf::As *new_as = model->create();
 297
 298   new_as->p_modelDesc = model;
 299   new_as->p_hierarchy = SURF_ROUTING_NULL;
 300   new_as->p_name = xbt_strdup(AS->id);
 301
 302   simgrid::surf::NetCard *info =
 303     new simgrid::surf::NetCardImpl(xbt_strdup(new_as->p_name),
 304                                             -1,
 305                                             SURF_NETWORK_ELEMENT_AS,
 306                                             current_routing);
 307   if (current_routing == NULL && routing_platf->p_root == NULL) {
 308
 309     /* it is the first one */
 310     new_as->p_routingFather = NULL;
 311     routing_platf->p_root = new_as;
 312     info->setId(-1);
 313   } else if (current_routing != NULL && routing_platf->p_root != NULL) {
 314
 315     xbt_assert(!xbt_dict_get_or_null
 316                (current_routing->p_routingSons, AS->id),
 317                "The AS \"%s\" already exists", AS->id);
 318     /* it is a part of the tree */
 319     new_as->p_routingFather = current_routing;
 320     /* set the father behavior */
 321     if (current_routing->p_hierarchy == SURF_ROUTING_NULL)
 322       current_routing->p_hierarchy = SURF_ROUTING_RECURSIVE;
 323     /* add to the sons dictionary */
 324     xbt_dict_set(current_routing->p_routingSons, AS->id,
 325                  (void *) new_as, NULL);
 326     /* add to the father element list */
 327     info->setId(current_routing->parseAS(info));
 328   } else {
 329     THROWF(arg_error, 0, "All defined components must belong to a AS");
 330   }
 331
 332   xbt_lib_set(as_router_lib, info->getName(), ROUTING_ASR_LEVEL,
 333               (void *) info);
 334   XBT_DEBUG("Having set name '%s' id '%d'", new_as->p_name, info->getId());
 335
 336   /* set the new current component of the tree */
 337   current_routing = new_as;
 338   current_routing->p_netcard = info;
 339
 340   simgrid::surf::netcardCreatedCallbacks(info);
 341   simgrid::surf::asCreatedCallbacks(new_as);
 342 }
 343
 344 /**
 345  * \brief Specify that the current description of AS is finished
 346  *
 347  * Once you've declared all the content of your AS, you have to close
 348  * it with this call. Your AS is not usable until you call this function.
 349  *
 350  * @fixme: this call is not as robust as wanted: bad things WILL happen
 351  * if you call it twice for the same AS, or if you forget calling it, or
 352  * even if you add stuff to a closed AS
 353  *
 354  */
 355 void routing_AS_end()
 356 {
 357
 358   if (current_routing == NULL) {
 359     THROWF(arg_error, 0, "Close an AS, but none was under construction");
 360   } else {
 361     if (current_routing->p_modelDesc->end)
 362       current_routing->p_modelDesc->end(current_routing);
 363     current_routing = current_routing->p_routingFather;
 364   }
 365 }
 366
 367 /* Aux Business methods */
 368
 369 /**
 370  * \brief Get the AS father and the first elements of the chain
 371  *
 372  * \param src the source host name
 373  * \param dst the destination host name
 374  *
 375  * Get the common father of the to processing units, and the first different
 376  * father in the chain
 377  */
 378 static void elements_father(sg_netcard_t src, sg_netcard_t dst,
 379                             AS_t * res_father,
 380                             AS_t * res_src,
 381                             AS_t * res_dst)
 382 {
 383   xbt_assert(src && dst, "bad parameters for \"elements_father\" method");
 384 #define ELEMENTS_FATHER_MAXDEPTH 16     /* increase if it is not enough */
 385   simgrid::surf::As *src_as, *dst_as;
 386   simgrid::surf::As *path_src[ELEMENTS_FATHER_MAXDEPTH];
 387   simgrid::surf::As *path_dst[ELEMENTS_FATHER_MAXDEPTH];
 388   int index_src = 0;
 389   int index_dst = 0;
 390   simgrid::surf::As *current;
 391   simgrid::surf::As *current_src;
 392   simgrid::surf::As *current_dst;
 393   simgrid::surf::As *father;
 394
 395   /* (1) find the as where the src and dst are located */
 396   sg_netcard_t src_data = src;
 397   sg_netcard_t dst_data = dst;
 398   src_as = src_data->getRcComponent();
 399   dst_as = dst_data->getRcComponent();
 400 #ifndef NDEBUG
 401   char* src_name = src_data->getName();
 402   char* dst_name = dst_data->getName();
 403 #endif
 404
 405   xbt_assert(src_as && dst_as,
 406              "Ask for route \"from\"(%s) or \"to\"(%s) no found", src_name, dst_name);
 407
 408   /* (2) find the path to the root routing component */
 409   for (current = src_as; current != NULL; current = current->p_routingFather) {
 410     if (index_src >= ELEMENTS_FATHER_MAXDEPTH)
 411       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_src");
 412     path_src[index_src++] = current;
 413   }
 414   for (current = dst_as; current != NULL; current = current->p_routingFather) {
 415     if (index_dst >= ELEMENTS_FATHER_MAXDEPTH)
 416       xbt_die("ELEMENTS_FATHER_MAXDEPTH should be increased for path_dst");
 417     path_dst[index_dst++] = current;
 418   }
 419
 420   /* (3) find the common father */
 421   do {
 422     current_src = path_src[--index_src];
 423     current_dst = path_dst[--index_dst];
 424   } while (index_src > 0 && index_dst > 0 && current_src == current_dst);
 425
 426   /* (4) they are not in the same routing component, make the path */
 427   if (current_src == current_dst)
 428     father = current_src;
 429   else
 430     father = path_src[index_src + 1];
 431
 432   /* (5) result generation */
 433   *res_father = father;         /* first the common father of src and dst */
 434   *res_src = current_src;       /* second the first different father of src */
 435   *res_dst = current_dst;       /* three  the first different father of dst */
 436
 437 #undef ELEMENTS_FATHER_MAXDEPTH
 438 }
 439
 440 /* Global Business methods */
 441
 442 /**
 443  * \brief Recursive function for get_route_latency
 444  *
 445  * \param src the source host name
 446  * \param dst the destination host name
 447  * \param *route the route where the links are stored. It is either NULL or a ready to use dynar
 448  * \param *latency the latency, if needed
 449  *
 450  * This function is called by "get_route" and "get_latency". It allows to walk
 451  * recursively through the ASes tree.
 452  */
 453 static void _get_route_and_latency(
 454   simgrid::surf::NetCard *src, simgrid::surf::NetCard *dst,
 455   xbt_dynar_t * links, double *latency)
 456 {
 457   s_sg_platf_route_cbarg_t route = SG_PLATF_ROUTE_INITIALIZER;
 458   memset(&route,0,sizeof(route));
 459
 460   xbt_assert(src && dst, "bad parameters for \"_get_route_latency\" method");
 461   XBT_DEBUG("Solve route/latency  \"%s\" to \"%s\"", src->getName(), dst->getName());
 462
 463   /* Find how src and dst are interconnected */
 464   simgrid::surf::As *common_father, *src_father, *dst_father;
 465   elements_father(src, dst, &common_father, &src_father, &dst_father);
 466   XBT_DEBUG("elements_father: common father '%s' src_father '%s' dst_father '%s'",
 467       common_father->p_name, src_father->p_name, dst_father->p_name);
 468
 469   /* Check whether a direct bypass is defined */
 470   sg_platf_route_cbarg_t e_route_bypass = NULL;
 471   //FIXME:REMOVE:if (common_father->get_bypass_route)
 472
 473   e_route_bypass = common_father->getBypassRoute(src, dst, latency);
 474
 475   /* Common ancestor is kind enough to declare a bypass route from src to dst -- use it and bail out */
 476   if (e_route_bypass) {
 477     xbt_dynar_merge(links, &e_route_bypass->link_list);
 478     generic_free_route(e_route_bypass);
 479     return;
 480   }
 481
 482   /* If src and dst are in the same AS, life is good */
 483   if (src_father == dst_father) {       /* SURF_ROUTING_BASE */
 484     route.link_list = *links;
 485     common_father->getRouteAndLatency(src, dst, &route, latency);
 486     // if vivaldi latency+=vivaldi(src,dst)
 487     return;
 488   }
 489
 490   /* Not in the same AS, no bypass. We'll have to find our path between the ASes recursively*/
 491
 492   route.link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
 493   // Find the net_card corresponding to father
 494   simgrid::surf::NetCard *src_father_netcard = src_father->p_netcard;
 495   simgrid::surf::NetCard *dst_father_netcard = dst_father->p_netcard;
 496
 497   common_father->getRouteAndLatency(src_father_netcard, dst_father_netcard,
 498                                     &route, latency);
 499
 500   xbt_assert((route.gw_src != NULL) && (route.gw_dst != NULL),
 501       "bad gateways for route from \"%s\" to \"%s\"", src->getName(), dst->getName());
 502
 503   sg_netcard_t src_gateway_net_elm = route.gw_src;
 504   sg_netcard_t dst_gateway_net_elm = route.gw_dst;
 505
 506   /* If source gateway is not our source, we have to recursively find our way up to this point */
 507   if (src != src_gateway_net_elm)
 508     _get_route_and_latency(src, src_gateway_net_elm, links, latency);
 509   xbt_dynar_merge(links, &route.link_list);
 510
 511   /* If dest gateway is not our destination, we have to recursively find our way from this point */
 512   if (dst_gateway_net_elm != dst)
 513     _get_route_and_latency(dst_gateway_net_elm, dst, links, latency);
 514
 515 }
 516
 517 AS_t surf_platf_get_root(routing_platf_t platf){
 518   return platf->p_root;
 519 }
 520
 521 e_surf_network_element_type_t surf_routing_edge_get_rc_type(sg_netcard_t netcard){
 522   return netcard->getRcType();
 523 }
 524
 525 namespace simgrid {
 526 namespace surf {
 527
 528 /**
 529  * \brief Find a route between hosts
 530  *
 531  * \param src the network_element_t for src host
 532  * \param dst the network_element_t for dst host
 533  * \param route where to store the list of links.
 534  *              If *route=NULL, create a short lived dynar. Else, fill the provided dynar
 535  * \param latency where to store the latency experienced on the path (or NULL if not interested)
 536  *                It is the caller responsability to initialize latency to 0 (we add to provided route)
 537  * \pre route!=NULL
 538  *
 539  * walk through the routing components tree and find a route between hosts
 540  * by calling each "get_route" function in each routing component.
 541  */
 542 void RoutingPlatf::getRouteAndLatency(NetCard *src, NetCard *dst, xbt_dynar_t* route, double *latency)
 543 {
 544   XBT_DEBUG("getRouteAndLatency from %s to %s", src->getName(), dst->getName());
 545   if (NULL == *route) {
 546     xbt_dynar_reset(routing_platf->p_lastRoute);
 547     *route = routing_platf->p_lastRoute;
 548   }
 549
 550   _get_route_and_latency(src, dst, route, latency);
 551
 552   xbt_assert(!latency || *latency >= 0.0,
 553              "negative latency on route between \"%s\" and \"%s\"", src->getName(), dst->getName());
 554 }
 555
 556 xbt_dynar_t RoutingPlatf::getOneLinkRoutes(){
 557   return recursiveGetOneLinkRoutes(p_root);
 558 }
 559
 560 xbt_dynar_t RoutingPlatf::recursiveGetOneLinkRoutes(As *rc)
 561 {
 562   xbt_dynar_t ret = xbt_dynar_new(sizeof(Onelink*), xbt_free_f);
 563
 564   //adding my one link routes
 565   xbt_dynar_t onelink_mine = rc->getOneLinkRoutes();
 566   if (onelink_mine)
 567     xbt_dynar_merge(&ret,&onelink_mine);
 568
 569   //recursing
 570   char *key;
 571   xbt_dict_cursor_t cursor = NULL;
 572   AS_t rc_child;
 573   xbt_dict_foreach(rc->p_routingSons, cursor, key, rc_child) {
 574     xbt_dynar_t onelink_child = recursiveGetOneLinkRoutes(rc_child);
 575     if (onelink_child)
 576       xbt_dynar_merge(&ret,&onelink_child);
 577   }
 578   return ret;
 579 }
 580
 581 }
 582 }
 583
 584 e_surf_network_element_type_t routing_get_network_element_type(const char *name)
 585 {
 586   simgrid::surf::NetCard *rc = sg_netcard_by_name_or_null(name);
 587   if (rc)
 588     return rc->getRcType();
 589
 590   return SURF_NETWORK_ELEMENT_NULL;
 591 }
 592
 593 /**
 594  * \brief Generic method: create the global routing schema
 595  *
 596  * Make a global routing structure and set all the parsing functions.
 597  */
 598 void routing_model_create( void *loopback)
 599 {
 600   /* config the uniq global routing */
 601   routing_platf = new simgrid::surf::RoutingPlatf();
 602   routing_platf->p_root = NULL;
 603   routing_platf->p_loopback = loopback;
 604   routing_platf->p_lastRoute = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
 605   /* no current routing at moment */
 606   current_routing = NULL;
 607 }
 608
 609
 610 /* ************************************************** */
 611 /* ********** PATERN FOR NEW ROUTING **************** */
 612
 613 /* The minimal configuration of a new routing model need the next functions,
 614  * also you need to set at the start of the file, the new model in the model
 615  * list. Remember keep the null ending of the list.
 616  */
 617 /*** Routing model structure ***/
 618 // typedef struct {
 619 //   s_routing_component_t generic_routing;
 620 //   /* things that your routing model need */
 621 // } s_routing_component_NEW_t,*routing_component_NEW_t;
 622
 623 /*** Parse routing model functions ***/
 624 // static void model_NEW_set_processing_unit(routing_component_t rc, const char* name) {}
 625 // static void model_NEW_set_autonomous_system(routing_component_t rc, const char* name) {}
 626 // static void model_NEW_set_route(routing_component_t rc, const char* src, const char* dst, route_t route) {}
 627 // static void model_NEW_set_ASroute(routing_component_t rc, const char* src, const char* dst, route_extended_t route) {}
 628 // static void model_NEW_set_bypassroute(routing_component_t rc, const char* src, const char* dst, route_extended_t e_route) {}
 629
 630 /*** Business methods ***/
 631 // static route_extended_t NEW_get_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 632 // static route_extended_t NEW_get_bypass_route(routing_component_t rc, const char* src,const char* dst) {return NULL;}
 633 // static void NEW_finalize(routing_component_t rc) { xbt_free(rc);}
 634
 635 /*** Creation routing model functions ***/
 636 // static void* model_NEW_create(void) {
 637 //   routing_component_NEW_t new_component =  xbt_new0(s_routing_component_NEW_t,1);
 638 //   new_component->generic_routing.set_processing_unit = model_NEW_set_processing_unit;
 639 //   new_component->generic_routing.set_autonomous_system = model_NEW_set_autonomous_system;
 640 //   new_component->generic_routing.set_route = model_NEW_set_route;
 641 //   new_component->generic_routing.set_ASroute = model_NEW_set_ASroute;
 642 //   new_component->generic_routing.set_bypassroute = model_NEW_set_bypassroute;
 643 //   new_component->generic_routing.get_route = NEW_get_route;
 644 //   new_component->generic_routing.get_bypass_route = NEW_get_bypass_route;
 645 //   new_component->generic_routing.finalize = NEW_finalize;
 646 //   /* initialization of internal structures */
 647 //   return new_component;
 648 // } /* mandatory */
 649 // static void  model_NEW_load(void) {}   /* mandatory */
 650 // static void  model_NEW_unload(void) {} /* mandatory */
 651 // static void  model_NEW_end(void) {}    /* mandatory */
 652
 653 /* ************************************************************************** */
 654 /* ************************* GENERIC PARSE FUNCTIONS ************************ */
 655
 656 void routing_cluster_add_backbone(void* bb) {
 657   xbt_assert(current_routing->p_modelDesc == &routing_models[SURF_MODEL_CLUSTER],
 658         "You have to be in model Cluster to use tag backbone!");
 659   xbt_assert(!static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone, "The backbone link is already defined!");
 660   static_cast<simgrid::surf::AsCluster*>(current_routing)->p_backbone =
 661     static_cast<simgrid::surf::Link*>(bb);
 662   XBT_DEBUG("Add a backbone to AS '%s'", current_routing->p_name);
 663 }
 664
 665 void sg_platf_new_cabinet(sg_platf_cabinet_cbarg_t cabinet)
 666 {
 667   int start, end, i;
 668   char *groups , *host_id , *link_id = NULL;
 669   unsigned int iter;
 670   xbt_dynar_t radical_elements;
 671   xbt_dynar_t radical_ends;
 672
 673   //Make all hosts
 674   radical_elements = xbt_str_split(cabinet->radical, ",");
 675   xbt_dynar_foreach(radical_elements, iter, groups) {
 676
 677     radical_ends = xbt_str_split(groups, "-");
 678     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 679
 680     switch (xbt_dynar_length(radical_ends)) {
 681     case 1:
 682       end = start;
 683       break;
 684     case 2:
 685       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 686       break;
 687     default:
 688       surf_parse_error("Malformed radical");
 689       break;
 690     }
 691     s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 692     memset(&host, 0, sizeof(host));
 693     host.initiallyOn   = 1;
 694     host.pstate        = 0;
 695     host.speed_scale   = 1.0;
 696     host.core_amount   = 1;
 697
 698     s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 699     memset(&link, 0, sizeof(link));
 700     link.initiallyOn = 1;
 701     link.policy    = SURF_LINK_FULLDUPLEX;
 702     link.latency   = cabinet->lat;
 703     link.bandwidth = cabinet->bw;
 704
 705     s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
 706     memset(&host_link, 0, sizeof(host_link));
 707
 708     for (i = start; i <= end; i++) {
 709       host_id                      = bprintf("%s%d%s",cabinet->prefix,i,cabinet->suffix);
 710       link_id                      = bprintf("link_%s%d%s",cabinet->prefix,i,cabinet->suffix);
 711       host.id                      = host_id;
 712       link.id                      = link_id;
 713       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 714       xbt_dynar_push(host.speed_peak,&cabinet->speed);
 715       sg_platf_new_host(&host);
 716       xbt_dynar_free(&host.speed_peak);
 717       sg_platf_new_link(&link);
 718
 719       char* link_up       = bprintf("%s_UP",link_id);
 720       char* link_down     = bprintf("%s_DOWN",link_id);
 721       host_link.id        = host_id;
 722       host_link.link_up   = link_up;
 723       host_link.link_down = link_down;
 724       sg_platf_new_netcard(&host_link);
 725
 726       free(host_id);
 727       free(link_id);
 728       free(link_up);
 729       free(link_down);
 730     }
 731
 732     xbt_dynar_free(&radical_ends);
 733   }
 734   xbt_dynar_free(&radical_elements);
 735 }
 736
 737 void routing_new_cluster(sg_platf_cluster_cbarg_t cluster)
 738 {
 739   using simgrid::surf::AsCluster;
 740   using simgrid::surf::AsClusterTorus;
 741   using simgrid::surf::AsClusterFatTree;
 742
 743   char *host_id, *groups, *link_id = NULL;
 744   xbt_dict_t patterns = NULL;
 745   int rankId=0;
 746
 747   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
 748   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
 749
 750   unsigned int iter;
 751   int start, end, i;
 752   xbt_dynar_t radical_elements;
 753   xbt_dynar_t radical_ends;
 754
 755   if ((cluster->availability_trace && strcmp(cluster->availability_trace, ""))
 756       || (cluster->state_trace && strcmp(cluster->state_trace, ""))) {
 757     patterns = xbt_dict_new_homogeneous(xbt_free_f);
 758     xbt_dict_set(patterns, "id", xbt_strdup(cluster->id), NULL);
 759     xbt_dict_set(patterns, "prefix", xbt_strdup(cluster->prefix), NULL);
 760     xbt_dict_set(patterns, "suffix", xbt_strdup(cluster->suffix), NULL);
 761   }
 762
 763   /* parse the topology attribute. If we are not in a flat cluster,
 764    * switch to the right mode and initialize the routing with
 765    * the parameters in topo_parameters attribute
 766    */
 767   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
 768   AS.id = cluster->id;
 769
 770   if(cluster->topology == SURF_CLUSTER_TORUS){
 771     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Torus_Cluster\">", cluster->id);
 772     AS.routing = A_surfxml_AS_routing_Cluster___torus;
 773     sg_platf_new_AS_begin(&AS);
 774     ((AsClusterTorus*)current_routing)->parse_specific_arguments(cluster);
 775   }
 776   else if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 777     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Fat_Tree_Cluster\">", cluster->id);
 778     AS.routing = A_surfxml_AS_routing_Cluster___fat___tree;
 779     sg_platf_new_AS_begin(&AS);
 780     ((AsClusterFatTree*)current_routing)->parse_specific_arguments(cluster);
 781   }
 782
 783   else{
 784     XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", cluster->id);
 785     AS.routing = A_surfxml_AS_routing_Cluster;
 786     sg_platf_new_AS_begin(&AS);
 787   }
 788
 789   if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 790       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 791       ((AsCluster*)current_routing)->p_has_loopback=1;
 792   }
 793
 794   if(cluster->limiter_link!=0){
 795       ((AsCluster*)current_routing)->p_nb_links_per_node++;
 796       ((AsCluster*)current_routing)->p_has_limiter=1;
 797   }
 798
 799
 800
 801   current_routing->p_linkUpDownList
 802             = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
 803
 804   //Make all hosts
 805   radical_elements = xbt_str_split(cluster->radical, ",");
 806   xbt_dynar_foreach(radical_elements, iter, groups) {
 807
 808     radical_ends = xbt_str_split(groups, "-");
 809     start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
 810
 811     switch (xbt_dynar_length(radical_ends)) {
 812     case 1:
 813       end = start;
 814       break;
 815     case 2:
 816       end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
 817       break;
 818     default:
 819       surf_parse_error("Malformed radical");
 820       break;
 821     }
 822     for (i = start; i <= end; i++) {
 823       host_id =
 824           bprintf("%s%d%s", cluster->prefix, i, cluster->suffix);
 825       link_id = bprintf("%s_link_%d", cluster->id, i);
 826
 827       XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\">", host_id, cluster->speed);
 828
 829       memset(&host, 0, sizeof(host));
 830       host.id = host_id;
 831       if ((cluster->properties != NULL) && (!xbt_dict_is_empty(cluster->properties))) {
 832           xbt_dict_cursor_t cursor=NULL;
 833           char *key,*data;
 834           host.properties = xbt_dict_new();
 835
 836           xbt_dict_foreach(cluster->properties,cursor,key,data) {
 837                   xbt_dict_set(host.properties, key, xbt_strdup(data),free);
 838           }
 839       }
 840       if (cluster->availability_trace && strcmp(cluster->availability_trace, "")) {
 841         xbt_dict_set(patterns, "radical", bprintf("%d", i), NULL);
 842         char *avail_file = xbt_str_varsubst(cluster->availability_trace, patterns);
 843         XBT_DEBUG("\tavailability_file=\"%s\"", avail_file);
 844         host.speed_trace = tmgr_trace_new_from_file(avail_file);
 845         xbt_free(avail_file);
 846       } else {
 847         XBT_DEBUG("\tavailability_file=\"\"");
 848       }
 849
 850       if (cluster->state_trace && strcmp(cluster->state_trace, "")) {
 851         char *avail_file = xbt_str_varsubst(cluster->state_trace, patterns);
 852         XBT_DEBUG("\tstate_file=\"%s\"", avail_file);
 853         host.state_trace = tmgr_trace_new_from_file(avail_file);
 854         xbt_free(avail_file);
 855       } else {
 856         XBT_DEBUG("\tstate_file=\"\"");
 857       }
 858
 859       host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
 860       xbt_dynar_push(host.speed_peak,&cluster->speed);
 861       host.pstate = 0;
 862
 863       //host.power_peak = cluster->power;
 864       host.speed_scale = 1.0;
 865       host.core_amount = cluster->core_amount;
 866       host.initiallyOn = 1;
 867       host.coord = "";
 868       sg_platf_new_host(&host);
 869       xbt_dynar_free(&host.speed_peak);
 870       XBT_DEBUG("</host>");
 871
 872       XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_id,
 873                 cluster->bw, cluster->lat);
 874
 875
 876       s_surf_parsing_link_up_down_t info_lim, info_loop;
 877       // All links are saved in a matrix;
 878       // every row describes a single node; every node
 879       // may have multiple links.
 880       // the first column may store a link from x to x if p_has_loopback is set
 881       // the second column may store a limiter link if p_has_limiter is set
 882       // other columns are to store one or more link for the node
 883
 884       //add a loopback link
 885       if(cluster->loopback_bw!=0 || cluster->loopback_lat!=0){
 886         char *tmp_link = bprintf("%s_loopback", link_id);
 887         XBT_DEBUG("<loopback\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 888                 cluster->limiter_link);
 889
 890
 891         memset(&link, 0, sizeof(link));
 892         link.id        = tmp_link;
 893         link.bandwidth = cluster->loopback_bw;
 894         link.latency   = cluster->loopback_lat;
 895         link.initiallyOn = 1;
 896         link.policy    = SURF_LINK_FATPIPE;
 897         sg_platf_new_link(&link);
 898         info_loop.link_up   = Link::byName(tmp_link);
 899         info_loop.link_down = info_loop.link_up;
 900         free(tmp_link);
 901         xbt_dynar_set(current_routing->p_linkUpDownList,
 902           rankId*(static_cast<AsCluster*>(current_routing))->p_nb_links_per_node, &info_loop);
 903       }
 904
 905       //add a limiter link (shared link to account for maximal bandwidth of the node)
 906       if(cluster->limiter_link!=0){
 907         char *tmp_link = bprintf("%s_limiter", link_id);
 908         XBT_DEBUG("<limiter\tid=\"%s\"\tbw=\"%f\"/>", tmp_link,
 909                 cluster->limiter_link);
 910
 911
 912         memset(&link, 0, sizeof(link));
 913         link.id = tmp_link;
 914         link.bandwidth = cluster->limiter_link;
 915         link.latency = 0;
 916         link.initiallyOn = 1;
 917         link.policy = SURF_LINK_SHARED;
 918         sg_platf_new_link(&link);
 919         info_lim.link_up = Link::byName(tmp_link);
 920         info_lim.link_down = info_lim.link_up;
 921         free(tmp_link);
 922         auto as_cluster = static_cast<AsCluster*>(current_routing);
 923         xbt_dynar_set(current_routing->p_linkUpDownList,
 924             rankId*(as_cluster)->p_nb_links_per_node + as_cluster->p_has_loopback ,
 925             &info_lim);
 926
 927       }
 928
 929
 930       //call the cluster function that adds the others links
 931       if (cluster->topology == SURF_CLUSTER_FAT_TREE) {
 932         ((AsClusterFatTree*) current_routing)->addProcessingNode(i);
 933       }
 934       else {
 935       static_cast<AsCluster*>(current_routing)->create_links_for_node(cluster, i, rankId, rankId*
 936                   static_cast<AsCluster*>(current_routing)->p_nb_links_per_node
 937           + static_cast<AsCluster*>(current_routing)->p_has_loopback
 938           + static_cast<AsCluster*>(current_routing)->p_has_limiter );
 939       }
 940       xbt_free(link_id);
 941       xbt_free(host_id);
 942       rankId++;
 943     }
 944
 945     xbt_dynar_free(&radical_ends);
 946   }
 947   xbt_dynar_free(&radical_elements);
 948
 949   // For fat trees, the links must be created once all nodes have been added
 950   if(cluster->topology == SURF_CLUSTER_FAT_TREE) {
 951     static_cast<simgrid::surf::AsClusterFatTree*>(current_routing)->create_links();
 952   }
 953   // Add a router. It is magically used thanks to the way in which surf_routing_cluster is written,
 954   // and it's very useful to connect clusters together
 955   XBT_DEBUG(" ");
 956   XBT_DEBUG("<router id=\"%s\"/>", cluster->router_id);
 957   char *newid = NULL;
 958   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
 959   memset(&router, 0, sizeof(router));
 960   router.id = cluster->router_id;
 961   router.coord = "";
 962   if (!router.id || !strcmp(router.id, ""))
 963     router.id = newid =
 964         bprintf("%s%s_router%s", cluster->prefix, cluster->id,
 965                 cluster->suffix);
 966   sg_platf_new_router(&router);
 967   ((AsCluster*)current_routing)->p_router = (simgrid::surf::NetCard*) xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL);
 968   free(newid);
 969
 970   //Make the backbone
 971   if ((cluster->bb_bw != 0) || (cluster->bb_lat != 0)) {
 972     char *link_backbone = bprintf("%s_backbone", cluster->id);
 973     XBT_DEBUG("<link\tid=\"%s\" bw=\"%f\" lat=\"%f\"/>", link_backbone,
 974               cluster->bb_bw, cluster->bb_lat);
 975
 976     memset(&link, 0, sizeof(link));
 977     link.id        = link_backbone;
 978     link.bandwidth = cluster->bb_bw;
 979     link.latency   = cluster->bb_lat;
 980     link.initiallyOn = 1;
 981     link.policy    = cluster->bb_sharing_policy;
 982
 983     sg_platf_new_link(&link);
 984
 985     routing_cluster_add_backbone(Link::byName(link_backbone));
 986
 987     free(link_backbone);
 988   }
 989
 990   XBT_DEBUG("</AS>");
 991   sg_platf_new_AS_end();
 992   XBT_DEBUG(" ");
 993   xbt_dict_free(&patterns); // no op if it were never set
 994 }
 995
 996 static void routing_parse_postparse(void) {
 997   xbt_dict_free(&random_value);
 998 }
 999
1000 void sg_platf_new_peer(sg_platf_peer_cbarg_t peer)
1001 {
1002   using simgrid::surf::NetCard;
1003   using simgrid::surf::AsCluster;
1004
1005   char *host_id = NULL;
1006   char *link_id = NULL;
1007   char *router_id = NULL;
1008
1009   XBT_DEBUG(" ");
1010   host_id = HOST_PEER(peer->id);
1011   link_id = LINK_PEER(peer->id);
1012   router_id = ROUTER_PEER(peer->id);
1013
1014   XBT_DEBUG("<AS id=\"%s\"\trouting=\"Cluster\">", peer->id);
1015   s_sg_platf_AS_cbarg_t AS = SG_PLATF_AS_INITIALIZER;
1016   AS.id                    = peer->id;
1017   AS.routing               = A_surfxml_AS_routing_Cluster;
1018   sg_platf_new_AS_begin(&AS);
1019
1020   current_routing->p_linkUpDownList = xbt_dynar_new(sizeof(s_surf_parsing_link_up_down_t),NULL);
1021
1022   XBT_DEBUG("<host\tid=\"%s\"\tpower=\"%f\"/>", host_id, peer->speed);
1023   s_sg_platf_host_cbarg_t host = SG_PLATF_HOST_INITIALIZER;
1024   memset(&host, 0, sizeof(host));
1025   host.initiallyOn = 1;
1026   host.id = host_id;
1027
1028   host.speed_peak = xbt_dynar_new(sizeof(double), NULL);
1029   xbt_dynar_push(host.speed_peak,&peer->speed);
1030   host.pstate = 0;
1031   //host.power_peak = peer->power;
1032   host.speed_scale = 1.0;
1033   host.speed_trace = peer->availability_trace;
1034   host.state_trace = peer->state_trace;
1035   host.core_amount = 1;
1036   sg_platf_new_host(&host);
1037   xbt_dynar_free(&host.speed_peak);
1038
1039   s_sg_platf_link_cbarg_t link = SG_PLATF_LINK_INITIALIZER;
1040   memset(&link, 0, sizeof(link));
1041   link.initiallyOn = 1;
1042   link.policy  = SURF_LINK_SHARED;
1043   link.latency = peer->lat;
1044
1045   char* link_up = bprintf("%s_UP",link_id);
1046   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_up,
1047             peer->bw_out, peer->lat);
1048   link.id = link_up;
1049   link.bandwidth = peer->bw_out;
1050   sg_platf_new_link(&link);
1051
1052   char* link_down = bprintf("%s_DOWN",link_id);
1053   XBT_DEBUG("<link\tid=\"%s\"\tbw=\"%f\"\tlat=\"%f\"/>", link_down,
1054             peer->bw_in, peer->lat);
1055   link.id = link_down;
1056   link.bandwidth = peer->bw_in;
1057   sg_platf_new_link(&link);
1058
1059   XBT_DEBUG("<host_link\tid=\"%s\"\tup=\"%s\"\tdown=\"%s\" />", host_id,link_up,link_down);
1060   s_sg_platf_host_link_cbarg_t host_link = SG_PLATF_HOST_LINK_INITIALIZER;
1061   memset(&host_link, 0, sizeof(host_link));
1062   host_link.id        = host_id;
1063   host_link.link_up   = link_up;
1064   host_link.link_down = link_down;
1065   sg_platf_new_netcard(&host_link);
1066
1067   XBT_DEBUG("<router id=\"%s\"/>", router_id);
1068   s_sg_platf_router_cbarg_t router = SG_PLATF_ROUTER_INITIALIZER;
1069   memset(&router, 0, sizeof(router));
1070   router.id = router_id;
1071   router.coord = peer->coord;
1072   sg_platf_new_router(&router);
1073   static_cast<AsCluster*>(current_routing)->p_router = static_cast<NetCard*>(xbt_lib_get_or_null(as_router_lib, router.id, ROUTING_ASR_LEVEL));
1074
1075   XBT_DEBUG("</AS>");
1076   sg_platf_new_AS_end();
1077   XBT_DEBUG(" ");
1078
1079   //xbt_dynar_free(&tab_elements_num);
1080   free(router_id);
1081   free(host_id);
1082   free(link_id);
1083   free(link_up);
1084   free(link_down);
1085 }
1086
1087 // static void routing_parse_Srandom(void)
1088 // {
1089 //   double mean, std, min, max, seed;
1090 //   char *random_id = A_surfxml_random_id;
1091 //   char *random_radical = A_surfxml_random_radical;
1092 //   char *rd_name = NULL;
1093 //   char *rd_value;
1094 //   mean = surf_parse_get_double(A_surfxml_random_mean);
1095 //   std = surf_parse_get_double(A_surfxml_random_std___deviation);
1096 //   min = surf_parse_get_double(A_surfxml_random_min);
1097 //   max = surf_parse_get_double(A_surfxml_random_max);
1098 //   seed = surf_parse_get_double(A_surfxml_random_seed);
1099
1100 //   double res = 0;
1101 //   int i = 0;
1102 //   random_data_t random = xbt_new0(s_random_data_t, 1);
1103 //   char *tmpbuf;
1104
1105 //   xbt_dynar_t radical_elements;
1106 //   unsigned int iter;
1107 //   char *groups;
1108 //   int start, end;
1109 //   xbt_dynar_t radical_ends;
1110
1111 //   switch (A_surfxml_random_generator) {
1112 //   case AU_surfxml_random_generator:
1113 //   case A_surfxml_random_generator_NONE:
1114 //     random->generator = NONE;
1115 //     break;
1116 //   case A_surfxml_random_generator_DRAND48:
1117 //     random->generator = DRAND48;
1118 //     break;
1119 //   case A_surfxml_random_generator_RAND:
1120 //     random->generator = RAND;
1121 //     break;
1122 //   case A_surfxml_random_generator_RNGSTREAM:
1123 //     random->generator = RNGSTREAM;
1124 //     break;
1125 //   default:
1126 //     surf_parse_error("Invalid random generator");
1127 //     break;
1128 //   }
1129 //   random->seed = seed;
1130 //   random->min = min;
1131 //   random->max = max;
1132
1133 //   /* Check user stupidities */
1134 //   if (max < min)
1135 //     THROWF(arg_error, 0, "random->max < random->min (%f < %f)", max, min);
1136 //   if (mean < min)
1137 //     THROWF(arg_error, 0, "random->mean < random->min (%f < %f)", mean, min);
1138 //   if (mean > max)
1139 //     THROWF(arg_error, 0, "random->mean > random->max (%f > %f)", mean, max);
1140
1141 //   /* normalize the mean and standard deviation before storing */
1142 //   random->mean = (mean - min) / (max - min);
1143 //   random->std = std / (max - min);
1144
1145 //   if (random->mean * (1 - random->mean) < random->std * random->std)
1146 //     THROWF(arg_error, 0, "Invalid mean and standard deviation (%f and %f)",
1147 //            random->mean, random->std);
1148
1149 //   XBT_DEBUG
1150 //       ("id = '%s' min = '%f' max = '%f' mean = '%f' std_deviatinon = '%f' generator = '%d' seed = '%ld' radical = '%s'",
1151 //        random_id, random->min, random->max, random->mean, random->std,
1152 //        (int)random->generator, random->seed, random_radical);
1153
1154 //   if (!random_value)
1155 //     random_value = xbt_dict_new_homogeneous(free);
1156
1157 //   if (!strcmp(random_radical, "")) {
1158 //     res = random_generate(random);
1159 //     rd_value = bprintf("%f", res);
1160 //     xbt_dict_set(random_value, random_id, rd_value, NULL);
1161 //   } else {
1162 //     radical_elements = xbt_str_split(random_radical, ",");
1163 //     xbt_dynar_foreach(radical_elements, iter, groups) {
1164 //       radical_ends = xbt_str_split(groups, "-");
1165 //       switch (xbt_dynar_length(radical_ends)) {
1166 //       case 1:
1167 //         xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1168 //                    "Custom Random '%s' already exists !", random_id);
1169 //         res = random_generate(random);
1170 //         tmpbuf =
1171 //             bprintf("%s%d", random_id,
1172 //                     atoi(xbt_dynar_getfirst_as(radical_ends, char *)));
1173 //         xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1174 //         xbt_free(tmpbuf);
1175 //         break;
1176
1177 //       case 2:
1178 //         start = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 0, char *));
1179 //         end = surf_parse_get_int(xbt_dynar_get_as(radical_ends, 1, char *));
1180 //         for (i = start; i <= end; i++) {
1181 //           xbt_assert(!xbt_dict_get_or_null(random_value, random_id),
1182 //                      "Custom Random '%s' already exists !", bprintf("%s%d",
1183 //                                                                     random_id,
1184 //                                                                     i));
1185 //           res = random_generate(random);
1186 //           tmpbuf = bprintf("%s%d", random_id, i);
1187 //           xbt_dict_set(random_value, tmpbuf, bprintf("%f", res), NULL);
1188 //           xbt_free(tmpbuf);
1189 //         }
1190 //         break;
1191 //       default:
1192 //         XBT_CRITICAL("Malformed radical");
1193 //         break;
1194 //       }
1195 //       res = random_generate(random);
1196 //       rd_name = bprintf("%s_router", random_id);
1197 //       rd_value = bprintf("%f", res);
1198 //       xbt_dict_set(random_value, rd_name, rd_value, NULL);
1199
1200 //       xbt_dynar_free(&radical_ends);
1201 //     }
1202 //     free(rd_name);
1203 //     xbt_dynar_free(&radical_elements);
1204 //   }
1205 // }
1206
1207 static void check_disk_attachment()
1208 {
1209   xbt_lib_cursor_t cursor;
1210   char *key;
1211   void **data;
1212   simgrid::surf::NetCard *host_elm;
1213   xbt_lib_foreach(storage_lib, cursor, key, data) {
1214     if(xbt_lib_get_level(xbt_lib_get_elm_or_null(storage_lib, key), SURF_STORAGE_LEVEL) != NULL) {
1215           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));
1216           host_elm = sg_netcard_by_name_or_null(storage->p_attach);
1217           if(!host_elm)
1218                   surf_parse_error("Unable to attach storage %s: host %s doesn't exist.", storage->getName(), storage->p_attach);
1219     }
1220   }
1221 }
1222
1223 void routing_register_callbacks()
1224 {
1225   simgrid::surf::on_postparse.connect(routing_parse_postparse);
1226   simgrid::surf::on_postparse.connect(check_disk_attachment);
1227
1228   instr_routing_define_callbacks();
1229 }
1230
1231 /**
1232  * \brief Recursive function for finalize
1233  *
1234  * \param rc the source host name
1235  *
1236  * This fuction is call by "finalize". It allow to finalize the
1237  * AS or routing components. It delete all the structures.
1238  */
1239 static void finalize_rec(simgrid::surf::As *as) {
1240   xbt_dict_cursor_t cursor = NULL;
1241   char *key;
1242   AS_t elem;
1243
1244   xbt_dict_foreach(as->p_routingSons, cursor, key, elem) {
1245     finalize_rec(elem);
1246   }
1247
1248   delete as;;
1249 }
1250
1251 /** \brief Frees all memory allocated by the routing module */
1252 void routing_exit(void) {
1253   delete routing_platf;
1254 }
1255
1256 namespace simgrid {
1257 namespace surf {
1258
1259 RoutingPlatf::~RoutingPlatf()
1260 {
1261         xbt_dynar_free(&p_lastRoute);
1262         finalize_rec(p_root);
1263 }
1264
1265 }
1266 }
1267
1268 AS_t surf_AS_get_routing_root() {
1269   return routing_platf->p_root;
1270 }
1271
1272 const char *surf_AS_get_name(simgrid::surf::As *as) {
1273   return as->p_name;
1274 }
1275
1276 static simgrid::surf::As *surf_AS_recursive_get_by_name(
1277   simgrid::surf::As *current, const char * name)
1278 {
1279   xbt_dict_cursor_t cursor = NULL;
1280   char *key;
1281   AS_t elem;
1282   simgrid::surf::As *tmp = NULL;
1283
1284   if(!strcmp(current->p_name, name))
1285     return current;
1286
1287   xbt_dict_foreach(current->p_routingSons, cursor, key, elem) {
1288     tmp = surf_AS_recursive_get_by_name(elem, name);
1289     if(tmp != NULL ) {
1290         break;
1291     }
1292   }
1293   return tmp;
1294 }
1295
1296 simgrid::surf::As *surf_AS_get_by_name(const char * name)
1297 {
1298   simgrid::surf::As *as = surf_AS_recursive_get_by_name(routing_platf->p_root, name);
1299   if(as == NULL)
1300     XBT_WARN("Impossible to find an AS with name %s, please check your input", name);
1301   return as;
1302 }
1303
1304 xbt_dict_t surf_AS_get_routing_sons(simgrid::surf::As *as)
1305 {
1306   return as->p_routingSons;
1307 }
1308
1309 const char *surf_AS_get_model(simgrid::surf::As *as)
1310 {
1311   return as->p_modelDesc->name;
1312 }
1313
1314 xbt_dynar_t surf_AS_get_hosts(simgrid::surf::As *as)
1315 {
1316   xbt_dynar_t elms = as->p_indexNetworkElm;
1317   int count = xbt_dynar_length(elms);
1318   xbt_dynar_t res =  xbt_dynar_new(sizeof(sg_host_t), NULL);
1319   for (int index = 0; index < count; index++) {
1320      sg_netcard_t relm =
1321       xbt_dynar_get_as(elms, index, simgrid::surf::NetCard*);
1322      sg_host_t delm = simgrid::s4u::Host::by_name_or_null(relm->getName());
1323      if (delm!=NULL) {
1324        xbt_dynar_push(res, &delm);
1325      }
1326   }
1327   return res;
1328 }
1329
1330 void surf_AS_get_graph(AS_t as, xbt_graph_t graph, xbt_dict_t nodes, xbt_dict_t edges) {
1331   as->getGraph(graph, nodes, edges);
1332 }