Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
f19670f39074f82d9bffad8f6e51d3d3f4df3297
[simgrid.git] / 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 #include "xbt/graph.h"
8
9 /* Global vars */
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 /* Business methods */
18 static void cluster_get_route_and_latency(AS_t as,
19                                           sg_routing_edge_t src,
20                                           sg_routing_edge_t dst,
21                                           sg_platf_route_cbarg_t route,
22                                           double *lat)
23 {
24
25   s_surf_parsing_link_up_down_t info;
26   XBT_DEBUG("cluster_get_route_and_latency from '%s'[%d] to '%s'[%d]",
27             src->name, src->id, dst->name, dst->id);
28
29   if (src->rc_type != SURF_NETWORK_ELEMENT_ROUTER) {    // No specific link for router
30     info =
31         xbt_dynar_get_as(as->link_up_down_list, src->id,
32                          s_surf_parsing_link_up_down_t);
33     if (info.link_up) {         // link up
34       xbt_dynar_push_as(route->link_list, void *, info.link_up);
35       if (lat)
36         *lat +=
37             surf_network_model->extension.network.get_link_latency(info.
38                                                                    link_up);
39     }
40   }
41
42   if (((as_cluster_t) as)->backbone) {
43     xbt_dynar_push_as(route->link_list, void *, ((as_cluster_t) as)->backbone);
44     if (lat)
45       *lat +=
46           surf_network_model->extension.network.
47           get_link_latency(((as_cluster_t) as)->backbone);
48   }
49
50   if (dst->rc_type != SURF_NETWORK_ELEMENT_ROUTER) {    // No specific link for router
51     info =
52         xbt_dynar_get_as(as->link_up_down_list, dst->id,
53                          s_surf_parsing_link_up_down_t);
54     if (info.link_down) {       // link down
55       xbt_dynar_push_as(route->link_list, void *, info.link_down);
56       if (lat)
57         *lat +=
58             surf_network_model->extension.network.get_link_latency(info.
59                                                                    link_down);
60     }
61   }
62 }
63
64 static void cluster_get_graph(xbt_graph_t graph, xbt_dict_t nodes,
65                               xbt_dict_t edges, AS_t rc)
66 {
67   int isrc;
68   int table_size = xbt_dynar_length(rc->index_network_elm);
69
70   sg_routing_edge_t src;
71   xbt_node_t current, previous, backboneNode = NULL, routerNode;
72   s_surf_parsing_link_up_down_t info;
73
74   xbt_assert(((as_cluster_t) rc)->router,"Malformed cluster");
75
76   /* create the router */
77   char *link_name =
78     ((sg_routing_edge_t) ((as_cluster_t) rc)->router)->name;
79   routerNode = new_xbt_graph_node(graph, link_name, nodes);
80
81   if(((as_cluster_t) rc)->backbone) {
82     char *link_nameR =
83       ((surf_resource_t) ((as_cluster_t) rc)->backbone)->name;
84     backboneNode = new_xbt_graph_node(graph, link_nameR, nodes);
85
86     new_xbt_graph_edge(graph, routerNode, backboneNode, edges);
87   }
88
89   for (isrc = 0; isrc < table_size; isrc++) {
90     src = xbt_dynar_get_as(rc->index_network_elm, isrc, sg_routing_edge_t);
91
92     if (src->rc_type != SURF_NETWORK_ELEMENT_ROUTER) {
93       previous = new_xbt_graph_node(graph, src->name, nodes);
94
95       info = xbt_dynar_get_as(rc->link_up_down_list, src->id,
96                               s_surf_parsing_link_up_down_t);
97
98       if (info.link_up) {     // link up
99
100         char *link_name = ((surf_resource_t) info.link_up)->name;
101         current = new_xbt_graph_node(graph, link_name, nodes);
102         new_xbt_graph_edge(graph, previous, current, edges);
103
104         if (((as_cluster_t) rc)->backbone) {
105           new_xbt_graph_edge(graph, current, backboneNode, edges);
106         } else {
107           new_xbt_graph_edge(graph, current, routerNode, edges);
108         }
109
110       }
111
112       if (info.link_down) {    // link down
113         char *link_name = ((surf_resource_t) info.link_down)->name;
114         current = new_xbt_graph_node(graph, link_name, nodes);
115         new_xbt_graph_edge(graph, previous, current, edges);
116
117         if (((as_cluster_t) rc)->backbone) {
118           new_xbt_graph_edge(graph, current, backboneNode, edges);
119         } else {
120           new_xbt_graph_edge(graph, current, routerNode, edges);
121         }
122       }
123     }
124
125   }
126 }
127
128 static void model_cluster_finalize(AS_t as)
129 {
130   model_none_finalize(as);
131 }
132
133 static int cluster_parse_PU(AS_t rc, sg_routing_edge_t elm) {
134   XBT_DEBUG("Load process unit \"%s\"", elm->name);
135   xbt_dynar_push_as(rc->index_network_elm,sg_routing_edge_t,elm);
136   return xbt_dynar_length(rc->index_network_elm)-1;
137 }
138
139 static int cluster_parse_AS(AS_t rc, sg_routing_edge_t elm) {
140   XBT_DEBUG("Load Autonomous system \"%s\"", elm->name);
141   xbt_dynar_push_as(rc->index_network_elm,sg_routing_edge_t,elm);
142   return xbt_dynar_length(rc->index_network_elm)-1;
143 }
144
145 /* Creation routing model functions */
146 AS_t model_cluster_create(void)
147 {
148   AS_t result = model_none_create_sized(sizeof(s_as_cluster_t));
149   result->get_route_and_latency = cluster_get_route_and_latency;
150   result->finalize = model_cluster_finalize;
151   result->get_graph = cluster_get_graph;
152   result->parse_AS = cluster_parse_AS;
153   result->parse_PU = cluster_parse_PU;
154
155   return (AS_t) result;
156 }