src/surf/surf_routing_cluster.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 #include "surf_routing_private.h"
   7
   8 /* Global vars */
   9 extern routing_global_t global_routing;
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_cluster, surf, "Routing part of surf");
  12
  13 /* This routing is specifically setup to represent clusters, aka homogeneous sets of machines
  14  * Note that a router is created, easing the interconnexion with the rest of the world.
  15  */
  16
  17 typedef struct {
  18   s_as_t generic_routing;
  19   void *backbone;
  20 } s_as_cluster_t, *as_cluster_t;
  21
  22
  23 static xbt_dict_t cluster_host_link = NULL;
  24
  25 /* Business methods */
  26 static route_t cluster_get_route(AS_t as,
  27                                           const char *src,
  28                                           const char *dst) {
  29
  30           xbt_dynar_t links_list = xbt_dynar_new(global_routing->size_of_link, NULL);
  31
  32           surf_parsing_link_up_down_t info;
  33
  34           info = xbt_dict_get_or_null(cluster_host_link,src);
  35           if(info) xbt_dynar_push_as(links_list,void*,info->link_up); //link_up
  36
  37           if ( ((as_cluster_t)as)->backbone )
  38             xbt_dynar_push_as(links_list,void*, ((as_cluster_t)as)->backbone) ;
  39
  40           info = xbt_dict_get_or_null(cluster_host_link,dst);
  41           if(info) xbt_dynar_push_as(links_list,void*,info->link_down); //link_down
  42
  43           route_t new_e_route = NULL;
  44           new_e_route = xbt_new0(s_route_t, 1);
  45           new_e_route->link_list = links_list;
  46
  47           return new_e_route;
  48 }
  49
  50 static void model_cluster_finalize(AS_t as) {
  51   xbt_dict_free(&cluster_host_link);
  52   model_none_finalize(as);
  53 }
  54 /* Creation routing model functions */
  55 AS_t model_cluster_create(void)
  56 {
  57   AS_t result = model_none_create_sized(sizeof(s_as_cluster_t));
  58   result->get_route = cluster_get_route;
  59   result->get_latency = generic_get_link_latency;
  60   result->finalize = model_cluster_finalize;
  61
  62   return (AS_t) result;
  63 }
  64
  65 void surf_routing_cluster_add_link(const char* host_id,surf_parsing_link_up_down_t info) {
  66   if(!cluster_host_link)
  67     cluster_host_link = xbt_dict_new();
  68
  69  xbt_dict_set(cluster_host_link,host_id,info,xbt_free);
  70 }
  71
  72 void surf_routing_cluster_add_backbone(AS_t as, void* bb) {
  73   ((as_cluster_t)as)->backbone = bb;
  74 }