src/surf/surf_routing_full.c

   1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "surf_routing_private.h"
   8
   9 /* Global vars */
  10 extern routing_global_t global_routing;
  11 extern int surf_parse_lineno;
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_full, surf, "Routing part of surf");
  14
  15 #define TO_ROUTE_FULL(i,j) routing->routing_table[(i)+(j)*table_size]
  16
  17 /* Routing model structure */
  18
  19 typedef struct s_routing_component_full {
  20   s_as_t generic_routing;
  21   route_t *routing_table;
  22 } s_routing_component_full_t, *routing_component_full_t;
  23
  24 /* Business methods */
  25 static xbt_dynar_t full_get_onelink_routes(AS_t rc)
  26 {
  27   xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
  28
  29   routing_component_full_t routing = (routing_component_full_t) rc;
  30   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  31   xbt_dict_cursor_t c1 = NULL, c2 = NULL;
  32   char *k1, *d1, *k2, *d2;
  33   xbt_dict_foreach(routing->generic_routing.to_index, c1, k1, d1) {
  34     xbt_dict_foreach(routing->generic_routing.to_index, c2, k2, d2) {
  35       int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k1);
  36       int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, k2);
  37       xbt_assert(src_id && dst_id,
  38                  "Ask for route \"from\"(%s)  or \"to\"(%s) "
  39                  "no found in the local table", k1, k2);
  40       route_t route = TO_ROUTE_FULL(*src_id, *dst_id);
  41       if (route) {
  42         if (xbt_dynar_length(route->link_list) == 1) {
  43           void *link = *(void **) xbt_dynar_get_ptr(route->link_list, 0);
  44           onelink_t onelink = xbt_new0(s_onelink_t, 1);
  45           onelink->link_ptr = link;
  46           if (routing->generic_routing.hierarchy == SURF_ROUTING_BASE) {
  47             onelink->src = xbt_strdup(k1);
  48             onelink->dst = xbt_strdup(k2);
  49           } else if (routing->generic_routing.hierarchy ==
  50                      SURF_ROUTING_RECURSIVE) {
  51             onelink->src = xbt_strdup(route->src_gateway);
  52             onelink->dst = xbt_strdup(route->dst_gateway);
  53           }
  54           xbt_dynar_push(ret, &onelink);
  55         }
  56       }
  57     }
  58   }
  59   return ret;
  60 }
  61
  62 static void full_get_route_and_latency(AS_t rc,
  63                                        const char *src, const char *dst,
  64                                        route_t res, double *lat)
  65 {
  66
  67   /* set utils vars */
  68   routing_component_full_t routing = (routing_component_full_t) rc;
  69   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  70
  71   int *src_id = xbt_dict_get_or_null(routing->generic_routing.to_index, src);
  72   int *dst_id = xbt_dict_get_or_null(routing->generic_routing.to_index, dst);
  73
  74   if (!src_id || !dst_id)
  75     THROWF(arg_error, 0, "No route from '%s' to '%s'", src, dst);
  76
  77   route_t e_route = NULL;
  78   void *link;
  79   unsigned int cpt = 0;
  80
  81   e_route = TO_ROUTE_FULL(*src_id, *dst_id);
  82
  83   if (e_route) {
  84     res->src_gateway = xbt_strdup(e_route->src_gateway);
  85     res->dst_gateway = xbt_strdup(e_route->dst_gateway);
  86     xbt_dynar_foreach(e_route->link_list, cpt, link) {
  87       xbt_dynar_push(res->link_list, &link);
  88       if (lat)
  89         *lat += surf_network_model->extension.network.get_link_latency(link);
  90     }
  91   }
  92 }
  93
  94 static void full_finalize(AS_t rc)
  95 {
  96   routing_component_full_t routing = (routing_component_full_t) rc;
  97   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
  98   int i, j;
  99   if (routing) {
 100     /* Delete routing table */
 101     for (i = 0; i < table_size; i++)
 102       for (j = 0; j < table_size; j++)
 103         generic_free_route(TO_ROUTE_FULL(i, j));
 104     xbt_free(routing->routing_table);
 105     model_generic_finalize(rc);
 106   }
 107 }
 108
 109 /* Creation routing model functions */
 110
 111 AS_t model_full_create(void)
 112 {
 113   routing_component_full_t new_component = (routing_component_full_t)
 114       model_generic_create_sized(sizeof(s_routing_component_full_t));
 115
 116   new_component->generic_routing.parse_route = model_full_set_route;
 117   new_component->generic_routing.parse_ASroute = model_full_set_route;
 118   new_component->generic_routing.get_route_and_latency =
 119       full_get_route_and_latency;
 120   new_component->generic_routing.get_onelink_routes = full_get_onelink_routes;
 121   new_component->generic_routing.finalize = full_finalize;
 122
 123   return (AS_t) new_component;
 124 }
 125
 126 void model_full_end(AS_t current_routing)
 127 {
 128   unsigned int i;
 129   route_t e_route;
 130
 131   /* set utils vars */
 132   routing_component_full_t routing =
 133       ((routing_component_full_t) current_routing);
 134   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 135
 136   /* Create table if necessary */
 137   if (!routing->routing_table)
 138     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 139
 140   /* Add the loopback if needed */
 141   if (current_routing->hierarchy == SURF_ROUTING_BASE) {
 142     for (i = 0; i < table_size; i++) {
 143       e_route = TO_ROUTE_FULL(i, i);
 144       if (!e_route) {
 145         e_route = xbt_new0(s_route_t, 1);
 146         e_route->src_gateway = NULL;
 147         e_route->dst_gateway = NULL;
 148         e_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 149         xbt_dynar_push(e_route->link_list, &global_routing->loopback);
 150         TO_ROUTE_FULL(i, i) = e_route;
 151       }
 152     }
 153   }
 154 }
 155
 156 static int full_pointer_resource_cmp(const void *a, const void *b)
 157 {
 158   return a != b;
 159 }
 160
 161 void model_full_set_route(AS_t rc, const char *src,
 162                           const char *dst, route_t route)
 163 {
 164   int *src_id, *dst_id;
 165   src_id = xbt_dict_get_or_null(rc->to_index, src);
 166   dst_id = xbt_dict_get_or_null(rc->to_index, dst);
 167   routing_component_full_t routing = (routing_component_full_t) rc;
 168   size_t table_size = xbt_dict_length(routing->generic_routing.to_index);
 169
 170   xbt_assert(src_id, "Network elements %s not found", src);
 171   xbt_assert(dst_id, "Network elements %s not found", dst);
 172
 173   xbt_assert(!xbt_dynar_is_empty(route->link_list),
 174              "Invalid count of links, must be greater than zero (%s,%s)",
 175              src, dst);
 176
 177   if (!routing->routing_table)
 178     routing->routing_table = xbt_new0(route_t, table_size * table_size);
 179
 180   if (TO_ROUTE_FULL(*src_id, *dst_id)) {
 181     char *link_name;
 182     unsigned int i;
 183     xbt_dynar_t link_route_to_test =
 184         xbt_dynar_new(global_routing->size_of_link, NULL);
 185     xbt_dynar_foreach(route->link_list, i, link_name) {
 186       void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 187       xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 188       xbt_dynar_push(link_route_to_test, &link);
 189     }
 190     if (xbt_dynar_compare(TO_ROUTE_FULL(*src_id, *dst_id)->link_list,
 191                           link_route_to_test, full_pointer_resource_cmp)) {
 192       surf_parse_error("A route between \"%s\" and \"%s\" already exists "
 193                        "with a different content. "
 194                        "If you are trying to define a reverse route, "
 195                        "you must set the symmetrical=no attribute to "
 196                        "your routes tags.", src, dst);
 197     } else {
 198       surf_parse_warn("Ignoring the identical redefinition of the route "
 199                       "between \"%s\" and \"%s\"", src, dst);
 200     }
 201   } else {
 202     if (!route->dst_gateway && !route->src_gateway)
 203       XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
 204     else {
 205       AS_t subas = xbt_dict_get_or_null(rc->routing_sons, src);
 206       if (subas == NULL)
 207         surf_parse_error("The source of an ASroute must be a sub-AS "
 208                          "declared within the current AS, "
 209                          "but '%s' is not an AS within '%s'", src, rc->name);
 210       if (subas->to_index
 211           && xbt_dict_get_or_null(subas->to_index, route->src_gateway) == NULL)
 212         surf_parse_error("In an ASroute, source gateway must be part of "
 213                          "the source sub-AS (in particular, being in a "
 214                          "sub-sub-AS is not allowed), "
 215                          "but '%s' is not in '%s'.",
 216                          route->src_gateway, subas->name);
 217
 218       subas = xbt_dict_get_or_null(rc->routing_sons, dst);
 219       if (subas == NULL)
 220         surf_parse_error("The destination of an ASroute must be a sub-AS "
 221                          "declared within the current AS, "
 222                          "but '%s' is not an AS within '%s'", dst, rc->name);
 223       if (subas->to_index
 224           && xbt_dict_get_or_null(subas->to_index, route->dst_gateway) == NULL)
 225         surf_parse_error("In an ASroute, destination gateway must be "
 226                          "part of the destination sub-AS (in particular, "
 227                          "in a sub-sub-AS is not allowed), "
 228                          "but '%s' is not in '%s'.",
 229                          route->dst_gateway, subas->name);
 230
 231       XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 232                 src, route->src_gateway, dst, route->dst_gateway);
 233       if (routing_get_network_element_type(route->dst_gateway) ==
 234           SURF_NETWORK_ELEMENT_NULL)
 235         xbt_die("The dst_gateway '%s' does not exist!", route->dst_gateway);
 236       if (routing_get_network_element_type(route->src_gateway) ==
 237           SURF_NETWORK_ELEMENT_NULL)
 238         xbt_die("The src_gateway '%s' does not exist!", route->src_gateway);
 239     }
 240     TO_ROUTE_FULL(*src_id, *dst_id) =
 241         generic_new_extended_route(rc->hierarchy, route, 1);
 242     xbt_dynar_shrink(TO_ROUTE_FULL(*src_id, *dst_id)->link_list, 0);
 243   }
 244
 245   if (A_surfxml_route_symmetrical == A_surfxml_route_symmetrical_YES
 246       || A_surfxml_ASroute_symmetrical == A_surfxml_ASroute_symmetrical_YES) {
 247     if (route->dst_gateway && route->src_gateway) {
 248       char *gw_tmp;
 249       gw_tmp = route->src_gateway;
 250       route->src_gateway = route->dst_gateway;
 251       route->dst_gateway = gw_tmp;
 252     }
 253     if (TO_ROUTE_FULL(*dst_id, *src_id)) {
 254       char *link_name;
 255       unsigned int i;
 256       xbt_dynar_t link_route_to_test =
 257           xbt_dynar_new(global_routing->size_of_link, NULL);
 258       for (i = xbt_dynar_length(route->link_list); i > 0; i--) {
 259         link_name = xbt_dynar_get_as(route->link_list, i - 1, void *);
 260         void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 261         xbt_assert(link, "Link : '%s' doesn't exists.", link_name);
 262         xbt_dynar_push(link_route_to_test, &link);
 263       }
 264       xbt_assert(!xbt_dynar_compare(TO_ROUTE_FULL(*dst_id, *src_id)->link_list,
 265                                     link_route_to_test,
 266                                     full_pointer_resource_cmp),
 267                  "The route between \"%s\" and \"%s\" already exists", src,
 268                  dst);
 269     } else {
 270       if (!route->dst_gateway && !route->src_gateway)
 271         XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
 272       else
 273         XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"",
 274                   dst, route->src_gateway, src, route->dst_gateway);
 275       TO_ROUTE_FULL(*dst_id, *src_id) =
 276           generic_new_extended_route(rc->hierarchy, route, 0);
 277       xbt_dynar_shrink(TO_ROUTE_FULL(*dst_id, *src_id)->link_list, 0);
 278     }
 279   }
 280 }