src/surf/surf_routing_generic.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 <pcre.h>               /* regular expression library */
   8
   9 #include "simgrid/platf_interface.h"    // platform creation API internal interface
  10
  11 #include "surf_routing_private.h"
  12 #include "surf/surf_routing.h"
  13 #include "surf/surfxml_parse_values.h"
  14
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_routing_generic, surf_route, "Generic implementation of the surf routing");
  16
  17 extern routing_component_t current_routing;
  18
  19
  20 void generic_set_processing_unit(routing_component_t rc, const char *name)
  21 {
  22   XBT_DEBUG("Load process unit \"%s\"", name);
  23   int *id = xbt_new0(int, 1);
  24   xbt_dict_t _to_index;
  25   _to_index = current_routing->to_index;
  26   *id = xbt_dict_length(_to_index);
  27   xbt_dict_set(_to_index, name, id, xbt_free);
  28 }
  29
  30 void generic_set_autonomous_system(routing_component_t rc, const char *name)
  31 {
  32   XBT_DEBUG("Load Autonomous system \"%s\"", name);
  33   int *id = xbt_new0(int, 1);
  34   xbt_dict_t _to_index;
  35   _to_index = current_routing->to_index;
  36   *id = xbt_dict_length(_to_index);
  37   xbt_dict_set(_to_index, name, id, xbt_free);
  38 }
  39
  40 void generic_set_bypassroute(routing_component_t rc,
  41                              const char *src, const char *dst,
  42                              route_extended_t e_route)
  43 {
  44   XBT_DEBUG("Load bypassRoute from \"%s\" to \"%s\"", src, dst);
  45   xbt_dict_t dict_bypassRoutes = rc->bypassRoutes;
  46   char *route_name;
  47
  48   route_name = bprintf("%s#%s", src, dst);
  49   xbt_assert(xbt_dynar_length(e_route->generic_route.link_list) > 0,
  50              "Invalid count of links, must be greater than zero (%s,%s)",
  51              src, dst);
  52   xbt_assert(!xbt_dict_get_or_null(dict_bypassRoutes, route_name),
  53              "The bypass route between \"%s\"(\"%s\") and \"%s\"(\"%s\") already exists",
  54              src, e_route->src_gateway, dst, e_route->dst_gateway);
  55
  56   route_extended_t new_e_route =
  57       generic_new_extended_route(SURF_ROUTING_RECURSIVE, e_route, 0);
  58   xbt_dynar_free(&(e_route->generic_route.link_list));
  59   xbt_free(e_route);
  60
  61   xbt_dict_set(dict_bypassRoutes, route_name, new_e_route,
  62                (void (*)(void *)) generic_free_extended_route);
  63   xbt_free(route_name);
  64 }
  65
  66 /* ************************************************************************** */
  67 /* *********************** GENERIC BUSINESS METHODS ************************* */
  68
  69 double generic_get_link_latency(routing_component_t rc,
  70                                 const char *src, const char *dst,
  71                                 route_extended_t route)
  72 {
  73   int need_to_clean = route ? 0 : 1;
  74   void *link;
  75   unsigned int i;
  76   double latency = 0.0;
  77
  78   route = route ? route : rc->get_route(rc, src, dst);
  79
  80   xbt_dynar_foreach(route->generic_route.link_list, i, link) {
  81     latency += surf_network_model->extension.network.get_link_latency(link);
  82   }
  83   if (need_to_clean)
  84     generic_free_extended_route(route);
  85   return latency;
  86 }
  87
  88 xbt_dynar_t generic_get_onelink_routes(routing_component_t rc)
  89 {
  90   xbt_die("\"generic_get_onelink_routes\" not implemented yet");
  91 }
  92
  93 route_extended_t generic_get_bypassroute(routing_component_t rc,
  94                                          const char *src, const char *dst)
  95 {
  96   xbt_dict_t dict_bypassRoutes = rc->bypassRoutes;
  97   routing_component_t src_as, dst_as;
  98   int index_src, index_dst;
  99   xbt_dynar_t path_src = NULL;
 100   xbt_dynar_t path_dst = NULL;
 101   routing_component_t current = NULL;
 102   routing_component_t *current_src = NULL;
 103   routing_component_t *current_dst = NULL;
 104
 105   /* (1) find the as where the src and dst are located */
 106   void *src_data = xbt_lib_get_or_null(host_lib, src, ROUTING_HOST_LEVEL);
 107   void *dst_data = xbt_lib_get_or_null(host_lib, dst, ROUTING_HOST_LEVEL);
 108   if (!src_data)
 109     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 110   if (!dst_data)
 111     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 112
 113   if (src_data == NULL || dst_data == NULL)
 114     xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found at AS \"%s\"",
 115             src, dst, rc->name);
 116
 117   src_as = ((network_element_info_t) src_data)->rc_component;
 118   dst_as = ((network_element_info_t) dst_data)->rc_component;
 119
 120   /* (2) find the path to the root routing component */
 121   path_src = xbt_dynar_new(sizeof(routing_component_t), NULL);
 122   current = src_as;
 123   while (current != NULL) {
 124     xbt_dynar_push(path_src, &current);
 125     current = current->routing_father;
 126   }
 127   path_dst = xbt_dynar_new(sizeof(routing_component_t), NULL);
 128   current = dst_as;
 129   while (current != NULL) {
 130     xbt_dynar_push(path_dst, &current);
 131     current = current->routing_father;
 132   }
 133
 134   /* (3) find the common father */
 135   index_src = path_src->used - 1;
 136   index_dst = path_dst->used - 1;
 137   current_src = xbt_dynar_get_ptr(path_src, index_src);
 138   current_dst = xbt_dynar_get_ptr(path_dst, index_dst);
 139   while (index_src >= 0 && index_dst >= 0 && *current_src == *current_dst) {
 140     xbt_dynar_pop_ptr(path_src);
 141     xbt_dynar_pop_ptr(path_dst);
 142     index_src--;
 143     index_dst--;
 144     current_src = xbt_dynar_get_ptr(path_src, index_src);
 145     current_dst = xbt_dynar_get_ptr(path_dst, index_dst);
 146   }
 147
 148   int max_index_src = path_src->used - 1;
 149   int max_index_dst = path_dst->used - 1;
 150
 151   int max_index = max(max_index_src, max_index_dst);
 152   int i, max;
 153
 154   route_extended_t e_route_bypass = NULL;
 155
 156   for (max = 0; max <= max_index; max++) {
 157     for (i = 0; i < max; i++) {
 158       if (i <= max_index_src && max <= max_index_dst) {
 159         char *route_name = bprintf("%s#%s",
 160                                    (*(routing_component_t *)
 161                                     (xbt_dynar_get_ptr(path_src, i)))->name,
 162                                    (*(routing_component_t *)
 163                                     (xbt_dynar_get_ptr(path_dst, max)))->name);
 164         e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
 165         xbt_free(route_name);
 166       }
 167       if (e_route_bypass)
 168         break;
 169       if (max <= max_index_src && i <= max_index_dst) {
 170         char *route_name = bprintf("%s#%s",
 171                                    (*(routing_component_t *)
 172                                     (xbt_dynar_get_ptr(path_src, max)))->name,
 173                                    (*(routing_component_t *)
 174                                     (xbt_dynar_get_ptr(path_dst, i)))->name);
 175         e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
 176         xbt_free(route_name);
 177       }
 178       if (e_route_bypass)
 179         break;
 180     }
 181
 182     if (e_route_bypass)
 183       break;
 184
 185     if (max <= max_index_src && max <= max_index_dst) {
 186       char *route_name = bprintf("%s#%s",
 187                                  (*(routing_component_t *)
 188                                   (xbt_dynar_get_ptr(path_src, max)))->name,
 189                                  (*(routing_component_t *)
 190                                   (xbt_dynar_get_ptr(path_dst, max)))->name);
 191       e_route_bypass = xbt_dict_get_or_null(dict_bypassRoutes, route_name);
 192       xbt_free(route_name);
 193     }
 194     if (e_route_bypass)
 195       break;
 196   }
 197
 198   xbt_dynar_free(&path_src);
 199   xbt_dynar_free(&path_dst);
 200
 201   route_extended_t new_e_route = NULL;
 202
 203   if (e_route_bypass) {
 204     void *link;
 205     unsigned int cpt = 0;
 206     new_e_route = xbt_new0(s_route_extended_t, 1);
 207     new_e_route->src_gateway = xbt_strdup(e_route_bypass->src_gateway);
 208     new_e_route->dst_gateway = xbt_strdup(e_route_bypass->dst_gateway);
 209     new_e_route->generic_route.link_list =
 210         xbt_dynar_new(global_routing->size_of_link, NULL);
 211     xbt_dynar_foreach(e_route_bypass->generic_route.link_list, cpt, link) {
 212       xbt_dynar_push(new_e_route->generic_route.link_list, &link);
 213     }
 214   }
 215
 216   return new_e_route;
 217 }
 218
 219 /* ************************************************************************** */
 220 /* ************************* GENERIC AUX FUNCTIONS ************************** */
 221
 222 route_t
 223 generic_new_route(e_surf_routing_hierarchy_t hierarchy, void *data, int order)
 224 {
 225
 226   char *link_name;
 227   route_t new_route;
 228   unsigned int cpt;
 229   xbt_dynar_t links = NULL, links_id = NULL;
 230
 231   new_route = xbt_new0(s_route_t, 1);
 232   new_route->link_list = xbt_dynar_new(global_routing->size_of_link, NULL);
 233
 234   xbt_assert(hierarchy == SURF_ROUTING_BASE,
 235              "the hierarchy type is not SURF_ROUTING_BASE");
 236
 237   links = ((route_t) data)->link_list;
 238
 239
 240   links_id = new_route->link_list;
 241
 242   xbt_dynar_foreach(links, cpt, link_name) {
 243
 244     void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 245     if (link) {
 246       if (order)
 247         xbt_dynar_push(links_id, &link);
 248       else
 249         xbt_dynar_unshift(links_id, &link);
 250     } else
 251       THROWF(mismatch_error, 0, "Link %s not found", link_name);
 252   }
 253
 254   return new_route;
 255 }
 256
 257 route_extended_t
 258 generic_new_extended_route(e_surf_routing_hierarchy_t hierarchy,
 259                            void *data, int order)
 260 {
 261
 262   char *link_name;
 263   route_extended_t e_route, new_e_route;
 264   route_t route;
 265   unsigned int cpt;
 266   xbt_dynar_t links = NULL, links_id = NULL;
 267
 268   new_e_route = xbt_new0(s_route_extended_t, 1);
 269   new_e_route->generic_route.link_list =
 270       xbt_dynar_new(global_routing->size_of_link, NULL);
 271   new_e_route->src_gateway = NULL;
 272   new_e_route->dst_gateway = NULL;
 273
 274   xbt_assert(hierarchy == SURF_ROUTING_BASE
 275              || hierarchy == SURF_ROUTING_RECURSIVE,
 276              "the hierarchy type is not defined");
 277
 278   if (hierarchy == SURF_ROUTING_BASE) {
 279
 280     route = (route_t) data;
 281     links = route->link_list;
 282
 283   } else if (hierarchy == SURF_ROUTING_RECURSIVE) {
 284
 285     e_route = (route_extended_t) data;
 286     xbt_assert(e_route->src_gateway
 287                && e_route->dst_gateway, "bad gateway, is null");
 288     links = e_route->generic_route.link_list;
 289
 290     /* remeber not erase the gateway names */
 291     new_e_route->src_gateway = strdup(e_route->src_gateway);
 292     new_e_route->dst_gateway = strdup(e_route->dst_gateway);
 293   }
 294
 295   links_id = new_e_route->generic_route.link_list;
 296
 297   xbt_dynar_foreach(links, cpt, link_name) {
 298
 299     void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
 300     if (link) {
 301       if (order)
 302         xbt_dynar_push(links_id, &link);
 303       else
 304         xbt_dynar_unshift(links_id, &link);
 305     } else
 306       THROWF(mismatch_error, 0, "Link %s not found", link_name);
 307   }
 308
 309   return new_e_route;
 310 }
 311
 312 void generic_free_route(route_t route)
 313 {
 314   if (route) {
 315     xbt_dynar_free(&(route->link_list));
 316     xbt_free(route);
 317   }
 318 }
 319
 320 void generic_free_extended_route(route_extended_t e_route)
 321 {
 322   if (e_route) {
 323     xbt_dynar_free(&(e_route->generic_route.link_list));
 324     xbt_free(e_route->src_gateway);
 325     xbt_free(e_route->dst_gateway);
 326     xbt_free(e_route);
 327   }
 328 }
 329
 330 static routing_component_t generic_as_exist(routing_component_t find_from,
 331                                             routing_component_t to_find)
 332 {
 333   //return to_find; // FIXME: BYPASSERROR OF FOREACH WITH BREAK
 334   xbt_dict_cursor_t cursor = NULL;
 335   char *key;
 336   int found = 0;
 337   routing_component_t elem;
 338   xbt_dict_foreach(find_from->routing_sons, cursor, key, elem) {
 339     if (to_find == elem || generic_as_exist(elem, to_find)) {
 340       found = 1;
 341       break;
 342     }
 343   }
 344   if (found)
 345     return to_find;
 346   return NULL;
 347 }
 348
 349 routing_component_t
 350 generic_autonomous_system_exist(routing_component_t rc, char *element)
 351 {
 352   //return rc; // FIXME: BYPASSERROR OF FOREACH WITH BREAK
 353   routing_component_t element_as, result, elem;
 354   xbt_dict_cursor_t cursor = NULL;
 355   char *key;
 356   element_as = ((network_element_info_t)
 357                 xbt_lib_get_or_null(as_router_lib, element,
 358                                     ROUTING_ASR_LEVEL))->rc_component;
 359   result = ((routing_component_t) - 1);
 360   if (element_as != rc)
 361     result = generic_as_exist(rc, element_as);
 362
 363   int found = 0;
 364   if (result) {
 365     xbt_dict_foreach(element_as->routing_sons, cursor, key, elem) {
 366       found = !strcmp(elem->name, element);
 367       if (found)
 368         break;
 369     }
 370     if (found)
 371       return element_as;
 372   }
 373   return NULL;
 374 }
 375
 376 routing_component_t
 377 generic_processing_units_exist(routing_component_t rc, char *element)
 378 {
 379   routing_component_t element_as;
 380   element_as = ((network_element_info_t)
 381                 xbt_lib_get_or_null(host_lib,
 382                                     element, ROUTING_HOST_LEVEL))->rc_component;
 383   if (element_as == rc)
 384     return element_as;
 385   return generic_as_exist(rc, element_as);
 386 }
 387
 388 void generic_src_dst_check(routing_component_t rc, const char *src,
 389                            const char *dst)
 390 {
 391
 392   void *src_data = xbt_lib_get_or_null(host_lib, src, ROUTING_HOST_LEVEL);
 393   void *dst_data = xbt_lib_get_or_null(host_lib, dst, ROUTING_HOST_LEVEL);
 394   if (!src_data)
 395     src_data = xbt_lib_get_or_null(as_router_lib, src, ROUTING_ASR_LEVEL);
 396   if (!dst_data)
 397     dst_data = xbt_lib_get_or_null(as_router_lib, dst, ROUTING_ASR_LEVEL);
 398
 399   if (src_data == NULL || dst_data == NULL)
 400     xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found at AS \"%s\"",
 401             src, dst, rc->name);
 402
 403   routing_component_t src_as =
 404       ((network_element_info_t) src_data)->rc_component;
 405   routing_component_t dst_as =
 406       ((network_element_info_t) dst_data)->rc_component;
 407
 408   if (src_as != dst_as)
 409     xbt_die("The src(%s in %s) and dst(%s in %s) are in differents AS",
 410             src, src_as->name, dst, dst_as->name);
 411   if (rc != dst_as)
 412     xbt_die
 413         ("The routing component of src'%s' and dst'%s' is not the same as the network elements belong (%s?=%s?=%s)",
 414          src, dst, src_as->name, dst_as->name, rc->name);
 415 }