1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
2 * All rights reserved. */
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"
8 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_vivaldi, surf, "Routing part of surf");
10 static XBT_INLINE double euclidean_dist_comp(int index, xbt_dynar_t src, xbt_dynar_t dst) {
11 double src_coord, dst_coord;
13 src_coord = xbt_dynar_get_as(src, index, double);
14 dst_coord = xbt_dynar_get_as(dst, index, double);
16 return (src_coord-dst_coord)*(src_coord-dst_coord);
19 static void vivaldi_get_route_and_latency(
20 AS_t rc, sg_routing_edge_t src_p, sg_routing_edge_t dst_p,
21 route_t route, double *lat)
23 XBT_DEBUG("vivaldi_get_route_and_latency from '%s'[%d] '%s'[%d]",src_p->name,src_p->id,dst_p->name,dst_p->id);
24 char *src = (char*)src_p->name;
25 char *dst = (char*)dst_p->name;
27 if(src_p->rc_type == SURF_NETWORK_ELEMENT_AS) {
28 route->src_gateway = xbt_lib_get_or_null(as_router_lib,ROUTER_PEER(src),ROUTING_ASR_LEVEL);
29 route->dst_gateway = xbt_lib_get_or_null(as_router_lib,ROUTER_PEER(dst),ROUTING_ASR_LEVEL);
32 double euclidean_dist;
33 xbt_dynar_t src_ctn, dst_ctn;
34 char *tmp_src_name, *tmp_dst_name;
36 if(src_p->rc_type == SURF_NETWORK_ELEMENT_HOST){
37 tmp_src_name = HOST_PEER(src);
38 src_ctn = xbt_lib_get_or_null(host_lib, tmp_src_name, COORD_HOST_LEVEL);
39 if(!src_ctn ) src_ctn = xbt_lib_get_or_null(host_lib, src, COORD_HOST_LEVEL);
41 else if(src_p->rc_type == SURF_NETWORK_ELEMENT_ROUTER || src_p->rc_type == SURF_NETWORK_ELEMENT_AS){
42 tmp_src_name = ROUTER_PEER(src);
43 src_ctn = xbt_lib_get_or_null(as_router_lib, tmp_src_name, COORD_ASR_LEVEL);
49 if(dst_p->rc_type == SURF_NETWORK_ELEMENT_HOST){
50 tmp_dst_name = HOST_PEER(dst);
51 dst_ctn = xbt_lib_get_or_null(host_lib, tmp_dst_name, COORD_HOST_LEVEL);
52 if(!dst_ctn ) dst_ctn = xbt_lib_get_or_null(host_lib, dst, COORD_HOST_LEVEL);
54 else if(dst_p->rc_type == SURF_NETWORK_ELEMENT_ROUTER || dst_p->rc_type == SURF_NETWORK_ELEMENT_AS){
55 tmp_dst_name = ROUTER_PEER(dst);
56 dst_ctn = xbt_lib_get_or_null(as_router_lib, tmp_dst_name, COORD_ASR_LEVEL);
62 xbt_assert(src_ctn,"No coordinate found for element '%s'",tmp_src_name);
63 xbt_assert(dst_ctn,"No coordinate found for element '%s'",tmp_dst_name);
67 euclidean_dist = sqrt (euclidean_dist_comp(0,src_ctn,dst_ctn)+euclidean_dist_comp(1,src_ctn,dst_ctn))
68 + fabs(xbt_dynar_get_as(src_ctn, 2, double))+fabs(xbt_dynar_get_as(dst_ctn, 2, double));
71 *lat += euclidean_dist / 1000; //From .ms to .s
75 /* Creation routing model functions */
76 AS_t model_vivaldi_create(void)
78 AS_t new_component = model_rulebased_create();
79 new_component->get_route_and_latency = vivaldi_get_route_and_latency;