1 /* Copyright (c) 2006-2016. 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. */
7 #include "src/surf/host_interface.hpp"
8 #include "src/simdag/simdag_private.h"
9 #include "simgrid/simdag.h"
10 #include "simgrid/host.h"
11 #include <simgrid/s4u/host.hpp>
14 #include "xbt/sysdep.h"
15 #include "surf/surf.h"
17 /** @brief Returns the route between two workstations
19 * Use SD_route_get_size() to know the array size.
22 * \param dst another host
23 * \return an array of the \ref SD_link_t composing the route
24 * \see SD_route_get_size(), SD_link_t
26 SD_link_t *SD_route_get_list(sg_host_t src, sg_host_t dst)
30 xbt_dynar_t surf_route = NULL;
31 routing_platf->getRouteAndLatency(src->pimpl_netcard, dst->pimpl_netcard, &surf_route, NULL);
33 SD_link_t *list = xbt_new(SD_link_t, xbt_dynar_length(surf_route));
34 xbt_dynar_foreach(surf_route, cpt, surf_link) {
35 list[cpt] = (SD_link_t)surf_link;
41 * \brief Returns the number of links on the route between two workstations
43 * \param src a workstation
44 * \param dst another workstation
45 * \return the number of links on the route between these two workstations
46 * \see SD_route_get_list()
48 int SD_route_get_size(sg_host_t src, sg_host_t dst)
50 xbt_dynar_t surf_route = NULL;
51 routing_platf->getRouteAndLatency(src->pimpl_netcard, dst->pimpl_netcard, &surf_route, NULL);
52 return xbt_dynar_length(surf_route);
56 * \brief Returns the latency of the route between two workstations.
58 * \param src the first workstation
59 * \param dst the second workstation
60 * \return the latency of the route between the two workstations (in seconds)
61 * \see SD_route_get_bandwidth()
63 double SD_route_get_latency(sg_host_t src, sg_host_t dst)
65 xbt_dynar_t route = NULL;
68 routing_platf->getRouteAndLatency(src->pimpl_netcard, dst->pimpl_netcard, &route, &latency);
74 * \brief Returns the bandwidth of the route between two workstations,
75 * i.e. the minimum link bandwidth of all between the workstations.
77 * \param src the first workstation
78 * \param dst the second workstation
79 * \return the bandwidth of the route between the two workstations (in bytes/second)
80 * \see SD_route_get_latency()
82 double SD_route_get_bandwidth(sg_host_t src, sg_host_t dst)
84 xbt_dynar_t route = NULL;
87 double min_bandwidth = -1.0;
90 routing_platf->getRouteAndLatency(src->pimpl_netcard, dst->pimpl_netcard, &route, &latency);
92 xbt_dynar_foreach(route, cpt, link){
93 double bandwidth = sg_link_bandwidth(link);
94 if (bandwidth < min_bandwidth || min_bandwidth == -1.0)
95 min_bandwidth = bandwidth;