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[simgrid.git] / src / simgrid / host.cpp
1 /* Copyright (c) 2013-2016. 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
7 #include "xbt/dict.h"
8 #include "simgrid/host.h"
9 #include <xbt/Extendable.hpp>
10 #include <simgrid/s4u/host.hpp>
11
12 #include "src/surf/HostImplem.hpp"
13 #include "surf/surf.h" // routing_get_network_element_type FIXME:killme
14
15 #include "src/simix/smx_private.hpp"
16
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sg_host, sd, "Logging specific to sg_hosts");
18
19 size_t sg_host_count()
20 {
21   return xbt_dict_length(host_list);
22 }
23 /** @brief Returns the host list
24  *
25  * Uses sg_host_count() to know the array size.
26  *
27  * \return an array of \ref sg_host_t containing all the hosts in the platform.
28  * \remark The host order in this array is generally different from the
29  * creation/declaration order in the XML platform (we use a hash table
30  * internally).
31  * \see sg_host_count()
32  */
33 sg_host_t *sg_host_list(void) {
34   xbt_assert(sg_host_count() > 0, "There is no host!");
35   return (sg_host_t*)xbt_dynar_to_array(sg_hosts_as_dynar());
36 }
37
38 const char *sg_host_get_name(sg_host_t host)
39 {
40   return host->name().c_str();
41 }
42
43 void* sg_host_extension_get(sg_host_t host, size_t ext)
44 {
45   return host->extension(ext);
46 }
47
48 size_t sg_host_extension_create(void(*deleter)(void*))
49 {
50   return simgrid::s4u::Host::extension_create(deleter);
51 }
52
53 sg_host_t sg_host_by_name(const char *name)
54 {
55   return simgrid::s4u::Host::by_name_or_null(name);
56 }
57
58 sg_host_t sg_host_by_name_or_create(const char *name)
59 {
60   return simgrid::s4u::Host::by_name_or_create(name);
61 }
62
63 xbt_dynar_t sg_hosts_as_dynar(void)
64 {
65   xbt_dynar_t res = xbt_dynar_new(sizeof(sg_host_t),NULL);
66
67   xbt_dict_cursor_t cursor = nullptr;
68   const char* name = nullptr;
69   simgrid::s4u::Host* host = nullptr;
70   xbt_dict_foreach(host_list, cursor, name, host)
71     if (host && host->pimpl_netcard && host->pimpl_netcard->getRcType() == SURF_NETWORK_ELEMENT_HOST)
72        xbt_dynar_push(res, &host);
73   return res;
74 }
75
76 // ========= Layering madness ==============*
77
78 #include "src/msg/msg_private.h" // MSG_host_priv_free. FIXME: killme by initializing that level in msg when used
79 #include "src/simix/smx_host_private.h" // SIMIX_host_destroy. FIXME: killme by initializing that level in simix when used
80 #include "src/surf/cpu_interface.hpp"
81 #include "src/surf/surf_routing.hpp"
82
83 void sg_host_init()
84 {
85   MSG_HOST_LEVEL = simgrid::s4u::Host::extension_create([](void *p) {
86     __MSG_host_priv_free((msg_host_priv_t) p);
87   });
88
89   ROUTING_HOST_LEVEL = simgrid::s4u::Host::extension_create([](void *p) {
90     delete static_cast<simgrid::surf::NetCard*>(p);
91   });
92
93   SD_HOST_LEVEL = simgrid::s4u::Host::extension_create(NULL);
94   SIMIX_HOST_LEVEL = simgrid::s4u::Host::extension_create(SIMIX_host_destroy);
95   USER_HOST_LEVEL = simgrid::s4u::Host::extension_create(NULL);
96 }
97
98 // ========== User data Layer ==========
99 void *sg_host_user(sg_host_t host) {
100   return host->extension(USER_HOST_LEVEL);
101 }
102 void sg_host_user_set(sg_host_t host, void* userdata) {
103   host->extension_set(USER_HOST_LEVEL,userdata);
104 }
105 void sg_host_user_destroy(sg_host_t host) {
106   host->extension_set(USER_HOST_LEVEL, nullptr);
107 }
108
109 // ========== MSG Layer ==============
110 msg_host_priv_t sg_host_msg(sg_host_t host) {
111   return (msg_host_priv_t) host->extension(MSG_HOST_LEVEL);
112 }
113 void sg_host_msg_set(sg_host_t host, msg_host_priv_t smx_host) {
114   host->extension_set(MSG_HOST_LEVEL, smx_host);
115 }
116
117 // ========== Simix layer =============
118 smx_host_priv_t sg_host_simix(sg_host_t host){
119   return (smx_host_priv_t) host->extension(SIMIX_HOST_LEVEL);
120 }
121 void sg_host_simix_set(sg_host_t host, smx_host_priv_t smx_host) {
122   host->extension_set(SIMIX_HOST_LEVEL, smx_host);
123 }
124 void sg_host_simix_destroy(sg_host_t host) {
125   host->extension_set(SIMIX_HOST_LEVEL, nullptr);
126 }
127
128 // ========= storage related functions ============
129 xbt_dict_t sg_host_get_mounted_storage_list(sg_host_t host){
130   return host->extension<simgrid::surf::HostImplem>()->getMountedStorageList();
131 }
132
133 xbt_dynar_t sg_host_get_attached_storage_list(sg_host_t host){
134   return host->extension<simgrid::surf::HostImplem>()->getAttachedStorageList();
135 }
136
137
138 // =========== user-level functions ===============
139 // ================================================
140
141 /** @brief Returns the total speed of a host
142  */
143 double sg_host_speed(sg_host_t host)
144 {
145   return host->speed();
146 }
147
148 double sg_host_get_available_speed(sg_host_t host){
149   return surf_host_get_available_speed(host);
150 }
151 /** @brief Returns the number of cores of a host
152 */
153 int sg_host_core_count(sg_host_t host) {
154   return host->core_count();
155 }
156
157 /** @brief Returns the state of a host.
158  *  @return 1 if the host is active or 0 if it has crashed.
159  */
160 int sg_host_is_on(sg_host_t host) {
161   return host->isOn();
162 }
163
164 /** @brief Returns the number of power states for a host.
165  *
166  *  See also @ref SURF_plugin_energy.
167  */
168 int sg_host_get_nb_pstates(sg_host_t host) {
169   return host->pstatesCount();
170 }
171
172 /** @brief Gets the pstate at which that host currently runs.
173  *
174  *  See also @ref SURF_plugin_energy.
175  */
176 int sg_host_get_pstate(sg_host_t host) {
177   return host->pstate();
178 }
179 /** @brief Sets the pstate at which that host should run.
180  *
181  *  See also @ref SURF_plugin_energy.
182  */
183 void sg_host_set_pstate(sg_host_t host,int pstate) {
184   host->setPstate(pstate);
185 }
186
187 /** @brief Get the properties of an host */
188 xbt_dict_t sg_host_get_properties(sg_host_t host) {
189   return host->properties();
190 }
191
192 /** \ingroup m_host_management
193  * \brief Returns the value of a given host property
194  *
195  * \param host a host
196  * \param name a property name
197  * \return value of a property (or NULL if property not set)
198 */
199 const char *sg_host_get_property_value(sg_host_t host, const char *name)
200 {
201   return (const char*) xbt_dict_get_or_null(sg_host_get_properties(host), name);
202 }
203
204 /** @brief Displays debugging informations about a host */
205 void sg_host_dump(sg_host_t host)
206 {
207   xbt_dict_t props;
208   xbt_dict_cursor_t cursor=NULL;
209   char *key,*data;
210
211   XBT_INFO("Displaying host %s", sg_host_get_name(host));
212   XBT_INFO("  - speed: %.0f", sg_host_speed(host));
213   XBT_INFO("  - available speed: %.2f", sg_host_get_available_speed(host));
214   props = sg_host_get_properties(host);
215
216   if (!xbt_dict_is_empty(props)){
217     XBT_INFO("  - properties:");
218
219     xbt_dict_foreach(props,cursor,key,data) {
220       XBT_INFO("    %s->%s",key,data);
221     }
222   }
223 }