1 /* Copyright (c) 2004-2015. 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/msg/msg_private.h"
8 #include "src/msg/msg_mailbox.h"
9 #include "xbt/sysdep.h"
11 #include "simgrid/simix.h"
12 #include "simgrid/Host.hpp"
14 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(msg);
16 /** @addtogroup m_host_management
17 * \htmlonly <!-- DOXYGEN_NAVBAR_LABEL="Hosts" --> \endhtmlonly
18 * (#msg_host_t) and the functions for managing it.
20 * A <em>location</em> (or <em>host</em>) is any possible place where
21 * a process may run. Thus it may be represented as a
22 * <em>physical resource with computing capabilities</em>, some
23 * <em>mailboxes</em> to enable running process to communicate with
24 * remote ones, and some <em>private data</em> that can be only
25 * accessed by local process.
29 /********************************* Host **************************************/
30 msg_host_t __MSG_host_create(sg_host_t host) // FIXME: don't return our parameter
32 msg_host_priv_t priv = xbt_new0(s_msg_host_priv_t, 1);
34 #ifdef MSG_USE_DEPRECATED
36 char alias[MAX_ALIAS_NAME + 1] = { 0 }; /* buffer used to build the key of the mailbox */
38 priv->mailboxes = (msg_global->max_channel > 0) ?
39 xbt_new0(msg_mailbox_t, msg_global->max_channel) : NULL;
41 for (i = 0; i < msg_global->max_channel; i++) {
42 sprintf(alias, "%s:%d", name, i);
44 /* the key of the mailbox (in this case) is build from the name of the host and the channel number */
45 priv->mailboxes[i] = MSG_mailbox_new(alias);
46 memset(alias, 0, MAX_ALIAS_NAME + 1);
51 priv->dp_objs = xbt_dict_new();
53 priv->dp_updated_by_deleted_tasks = 0;
54 priv->is_migrating = 0;
56 priv->affinity_mask_db = xbt_dict_new_homogeneous(NULL);
58 priv->file_descriptor_table = xbt_dynar_new(sizeof(int), NULL);
59 for (int i=1023; i>=0;i--)
60 xbt_dynar_push_as(priv->file_descriptor_table, int, i);
62 sg_host_msg_set(host,priv);
67 /** \ingroup m_host_management
68 * \brief Finds a msg_host_t using its name.
70 * This is a name directory service
71 * \param name the name of an host.
72 * \return the corresponding host
74 msg_host_t MSG_host_by_name(const char *name)
76 return simgrid::Host::by_name_or_null(name);
79 /** \ingroup m_host_management
81 * \brief Set the user data of a #msg_host_t.
83 * This functions checks whether some data has already been associated to \a host
84 or not and attach \a data to \a host if it is possible.
86 msg_error_t MSG_host_set_data(msg_host_t host, void *data) {
87 sg_host_user_set(host, data);
91 /** \ingroup m_host_management
93 * \brief Return the user data of a #msg_host_t.
95 * This functions checks whether \a host is a valid pointer or not and return
96 the user data associated to \a host if it is possible.
98 void *MSG_host_get_data(msg_host_t host) {
99 return sg_host_user(host);
102 /** \ingroup m_host_management
104 * \brief Return the name of the #msg_host_t.
106 * This functions checks whether \a host is a valid pointer or not and return
109 const char *MSG_host_get_name(msg_host_t host) {
110 return SIMIX_host_get_name(host);
113 /** \ingroup m_host_management
115 * \brief Return the location on which the current process is executed.
117 msg_host_t MSG_host_self(void)
119 return MSG_process_get_host(NULL);
123 /** \ingroup m_host_management
125 * \brief Start the host if it is off
127 * See also #MSG_host_is_on() and #MSG_host_is_off() to test the current state of the host and @ref SURF_plugin_energy for more info on DVFS.
129 void MSG_host_on(msg_host_t host)
131 simcall_host_on(host);
134 /** \ingroup m_host_management
136 * \brief Stop the host if it is on
138 * See also #MSG_host_is_on() and #MSG_host_is_off() to test the current state of the host and @ref SURF_plugin_energy for more info on DVFS.
140 void MSG_host_off(msg_host_t host)
142 simcall_host_off(host);
146 * \brief Frees private data of a host (internal call only)
148 void __MSG_host_priv_free(msg_host_priv_t priv)
153 unsigned int size = xbt_dict_size(priv->dp_objs);
155 XBT_WARN("dp_objs: %u pending task?", size);
156 xbt_dict_free(&priv->dp_objs);
157 xbt_dict_free(&priv->affinity_mask_db);
158 xbt_dynar_free(&priv->file_descriptor_table);
159 #ifdef MSG_USE_DEPRECATED
160 free(priv->mailboxes);
167 * \brief Destroys a host (internal call only)
169 void __MSG_host_destroy(msg_host_t host) //FIXME: killme?
172 * What happens if VMs still remain on this host?
173 * Revisit here after the surf layer gets stable.
175 sg_host_msg_destroy(host);
178 /** \ingroup m_host_management
179 * \brief Return the current number MSG hosts.
181 int MSG_get_host_number(void)
183 return xbt_dict_length(host_list);
186 #ifdef MSG_USE_DEPRECATED
187 msg_host_t *MSG_get_host_table(void)
189 if (xbt_dict_is_empty(host_list))
192 void **array = xbt_new0(void *, xbt_dict_length(host_list));
194 xbt_lib_cursor_t cursor;
197 xbt_dict_foreach(host_list, cursor, id, host)
198 if(routing_get_network_element_type(key) == SURF_NETWORK_ELEMENT_HOST)
199 array[i++] = host->facet(MSG_HOST_LEVEL);
201 return (msg_host_t *)array;
205 /** \ingroup m_host_management
206 * \brief Return a dynar containing all the hosts declared at a given point of time
207 * \remark The host order in the returned array is generally different from the host creation/declaration order in the XML platform (we use a hash table internally)
209 xbt_dynar_t MSG_hosts_as_dynar(void) {
210 return sg_hosts_as_dynar();
213 /** \ingroup m_host_management
214 * \brief Return the speed of the processor (in flop/s), regardless of
215 the current load on the machine.
217 double MSG_get_host_speed(msg_host_t host) {
218 return host->getSpeed();
222 /** \ingroup m_host_management
223 * \brief Return the number of cores.
226 * \return the number of cores
228 int MSG_host_get_core_number(msg_host_t host) {
229 return host->getCoreAmount();
232 /** \ingroup m_host_management
233 * \brief Return the list of processes attached to an host.
236 * \return a swag with the attached processes
238 xbt_swag_t MSG_host_get_process_list(msg_host_t host)
240 xbt_assert((host != NULL), "Invalid parameters");
242 return (simcall_host_get_process_list(host));
246 /** \ingroup m_host_management
247 * \brief Returns the value of a given host property
250 * \param name a property name
251 * \return value of a property (or NULL if property not set)
253 const char *MSG_host_get_property_value(msg_host_t host, const char *name)
255 return (const char*) xbt_dict_get_or_null(MSG_host_get_properties(host), name);
258 /** \ingroup m_host_management
259 * \brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
262 * \return a dict containing the properties
264 xbt_dict_t MSG_host_get_properties(msg_host_t host)
266 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
268 return (simcall_host_get_properties(host));
271 /** \ingroup m_host_management
272 * \brief Change the value of a given host property
275 * \param name a property name
276 * \param value what to change the property to
277 * \param free_ctn the freeing function to use to kill the value on need
279 void MSG_host_set_property_value(msg_host_t host, const char *name, char *value,void_f_pvoid_t free_ctn) {
281 xbt_dict_set(MSG_host_get_properties(host), name, value,free_ctn);
285 /** @ingroup m_host_management
287 * @brief Determine if a host is up and running.
289 * See also #MSG_host_on() and #MSG_host_off() to switch the host ON and OFF and @ref SURF_plugin_energy for more info on DVFS.
291 * @param host host to test
292 * @return Returns true if the host is up and running, and false if it's currently down
294 int MSG_host_is_on(msg_host_t host)
296 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
297 return sg_host_get_state(host);
299 /** @ingroup m_host_management
301 * @brief Determine if a host is currently off.
303 * See also #MSG_host_on() and #MSG_host_off() to switch the host ON and OFF and @ref SURF_plugin_energy for more info on DVFS.
305 int MSG_host_is_off(msg_host_t host)
307 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
308 return !(sg_host_get_state(host));
311 /** \ingroup m_host_management
312 * \brief Set the parameters of a given host
315 * \param params a prameter object
317 void MSG_host_set_params(msg_host_t host, vm_params_t params)
319 simcall_host_set_params(host, params);
322 /** \ingroup m_host_management
323 * \brief Get the parameters of a given host
326 * \param params a prameter object
328 void MSG_host_get_params(msg_host_t host, vm_params_t params)
330 simcall_host_get_params(host, params);
333 /** \ingroup m_host_management
334 * \brief Return the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
336 * \param host host to test
337 * \param pstate_index pstate to test
338 * \return Returns the processor speed associated with pstate_index
340 double MSG_host_get_power_peak_at(msg_host_t host, int pstate_index) {
341 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
342 return (simcall_host_get_power_peak_at(host, pstate_index));
345 /** \ingroup m_host_management
346 * \brief Return the current speed of the processor (in flop/s)
348 * \param host host to test
349 * \return Returns the current processor speed
351 double MSG_host_get_current_power_peak(msg_host_t host) {
352 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
353 return simcall_host_get_current_power_peak(host);
356 /** \ingroup m_host_management
357 * \brief Return the total count of pstates defined for a host. See also @ref SURF_plugin_energy.
359 * \param host host to test
361 int MSG_host_get_nb_pstates(msg_host_t host) {
362 return sg_host_get_nb_pstates(host);
365 /** \ingroup m_host_management
366 * \brief Sets the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
368 * \param host host to test
369 * \param pstate_index pstate to switch to
371 void MSG_host_set_pstate(msg_host_t host, int pstate_index) {
372 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
374 simcall_host_set_pstate(host, pstate_index);
376 /** \ingroup m_host_management
377 * \brief Gets the pstate at which the given host is currently running. See also @ref SURF_plugin_energy.
379 * \param host host to test
381 int MSG_host_get_pstate(msg_host_t host) {
382 return sg_host_get_pstate(host);
385 /** \ingroup m_host_management
386 * \brief Return the total energy consumed by a host (in Joules). See also @ref SURF_plugin_energy.
388 * \param host host to test
389 * \return Returns the consumed energy
391 double MSG_host_get_consumed_energy(msg_host_t host) {
392 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
393 return sg_host_get_consumed_energy(host);
395 /** \ingroup m_host_management
396 * \brief Returns the amount of watt dissipated at the given pstate when the host is idling
399 double MSG_host_get_wattmin_at(msg_host_t host, int pstate){
400 return simcall_host_get_wattmin_at(host, pstate);
402 /** \ingroup m_host_management
403 * \brief Returns the amount of watt dissipated at the given pstate when the host burns CPU at 100%
406 double MSG_host_get_wattmax_at(msg_host_t host, int pstate){
407 return simcall_host_get_wattmax_at(host, pstate);
410 /** \ingroup m_host_management
411 * \brief Return the list of mount point names on an host.
413 * \return a dict containing all mount point on the host (mount_name => msg_storage_t)
415 xbt_dict_t MSG_host_get_mounted_storage_list(msg_host_t host)
417 xbt_assert((host != NULL), "Invalid parameters");
418 return (simcall_host_get_mounted_storage_list(host));
421 /** \ingroup m_host_management
422 * \brief Return the list of storages attached to an host.
424 * \return a dynar containing all storages (name) attached to the host
426 xbt_dynar_t MSG_host_get_attached_storage_list(msg_host_t host)
428 xbt_assert((host != NULL), "Invalid parameters");
429 return (simcall_host_get_attached_storage_list(host));
432 /** \ingroup m_host_management
433 * \brief Return the content of mounted storages on an host.
435 * \return a dict containing content (as a dict) of all storages mounted on the host
437 xbt_dict_t MSG_host_get_storage_content(msg_host_t host)
439 xbt_assert((host != NULL), "Invalid parameters");
440 xbt_dict_t contents = xbt_dict_new_homogeneous(NULL);
441 msg_storage_t storage;
444 xbt_dict_cursor_t cursor = NULL;
446 xbt_dict_t storage_list = simcall_host_get_mounted_storage_list(host);
448 xbt_dict_foreach(storage_list,cursor,mount_name,storage_name){
449 storage = (msg_storage_t)xbt_lib_get_elm_or_null(storage_lib,storage_name);
450 xbt_dict_t content = simcall_storage_get_content(storage);
451 xbt_dict_set(contents,mount_name, content,NULL);
453 xbt_dict_free(&storage_list);
457 int __MSG_host_get_file_descriptor_id(msg_host_t host){
458 msg_host_priv_t priv = sg_host_msg(host);
459 xbt_assert(!xbt_dynar_is_empty(priv->file_descriptor_table),
460 "Too much files are opened! Some have to be closed.");
461 return xbt_dynar_pop_as(priv->file_descriptor_table, int);
464 void __MSG_host_release_file_descriptor_id(msg_host_t host, int id){
465 msg_host_priv_t priv = sg_host_msg(host);
466 xbt_dynar_push_as(priv->file_descriptor_table, int, id);