1 /* Copyright (c) 2006-2014. 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. */
8 #include "simgrid/simdag.h"
10 #include "xbt/sysdep.h"
11 #include "surf/surf.h"
12 #include "surf/surf_resource.h"
15 /* Creates a link and registers it in SD.
17 SD_link_t __SD_link_create(void *surf_link, void *data)
23 link = xbt_new(s_SD_link_t, 1);
24 link->surf_link = surf_link;
25 link->data = data; /* user data */
26 if (surf_network_link_is_shared(surf_link))
27 link->sharing_policy = SD_LINK_SHARED;
29 link->sharing_policy = SD_LINK_FATPIPE;
31 name = SD_link_get_name(link);
32 xbt_lib_set(link_lib,name,SD_LINK_LEVEL,link);
38 * \brief Returns the link list
40 * Use SD_link_get_number() to know the array size.
42 * \return an array of \ref SD_link_t containing all links
43 * \see SD_link_get_number()
45 const SD_link_t *SD_link_get_list(void)
48 xbt_lib_cursor_t cursor;
53 if (sd_global->link_list == NULL) { /* this is the first time the function is called */
54 sd_global->link_list = xbt_new(SD_link_t, xbt_lib_length(link_lib));
57 xbt_lib_foreach(link_lib, cursor, key, data) {
58 sd_global->link_list[i++] = (SD_link_t) data[SD_LINK_LEVEL];
61 return sd_global->link_list;
65 * \brief Returns the number of links
67 * \return the number of existing links
68 * \see SD_link_get_list()
70 int SD_link_get_number(void)
72 return xbt_lib_length(link_lib);
76 * \brief Returns the user data of a link
79 * \return the user data associated with this link (can be \c NULL)
80 * \see SD_link_set_data()
82 void *SD_link_get_data(SD_link_t link)
88 * \brief Sets the user data of a link
90 * The new data can be \c NULL. The old data should have been freed first
91 * if it was not \c NULL.
94 * \param data the new data you want to associate with this link
95 * \see SD_link_get_data()
97 void SD_link_set_data(SD_link_t link, void *data)
103 * \brief Returns the name of a link
106 * \return the name of this link (cannot be \c NULL)
108 const char *SD_link_get_name(SD_link_t link)
110 return surf_resource_name(link->surf_link);
114 * \brief Returns the current bandwidth of a link
117 * \return the current bandwidth of this link, in bytes per second
119 double SD_link_get_current_bandwidth(SD_link_t link)
121 return surf_network_link_get_bandwidth(link->surf_link);
125 * \brief Returns the current latency of a link
128 * \return the current latency of this link, in seconds
130 double SD_link_get_current_latency(SD_link_t link)
132 return surf_network_link_get_latency(link->surf_link);
136 * \brief Returns the sharing policy of this workstation.
139 * \return the sharing policyfor the flows going through this link:
140 * SD_LINK_SHARED or SD_LINK_FATPIPE
143 e_SD_link_sharing_policy_t SD_link_get_sharing_policy(SD_link_t link)
145 return link->sharing_policy;