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 h)
219 xbt_assert((h != NULL), "Invalid parameters");
221 return sg_host_get_speed(h);
225 /** \ingroup m_host_management
226 * \brief Return the number of cores.
229 * \return the number of cores
231 int MSG_host_get_core_number(msg_host_t host)
233 xbt_assert((host != NULL), "Invalid parameters");
235 return sg_host_get_core(host);
238 /** \ingroup m_host_management
239 * \brief Return the list of processes attached to an host.
242 * \return a swag with the attached processes
244 xbt_swag_t MSG_host_get_process_list(msg_host_t host)
246 xbt_assert((host != NULL), "Invalid parameters");
248 return (simcall_host_get_process_list(host));
252 /** \ingroup m_host_management
253 * \brief Returns the value of a given host property
256 * \param name a property name
257 * \return value of a property (or NULL if property not set)
259 const char *MSG_host_get_property_value(msg_host_t host, const char *name)
261 return (const char*) xbt_dict_get_or_null(MSG_host_get_properties(host), name);
264 /** \ingroup m_host_management
265 * \brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
268 * \return a dict containing the properties
270 xbt_dict_t MSG_host_get_properties(msg_host_t host)
272 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
274 return (simcall_host_get_properties(host));
277 /** \ingroup m_host_management
278 * \brief Change the value of a given host property
281 * \param name a property name
282 * \param value what to change the property to
283 * \param free_ctn the freeing function to use to kill the value on need
285 void MSG_host_set_property_value(msg_host_t host, const char *name, char *value,void_f_pvoid_t free_ctn) {
287 xbt_dict_set(MSG_host_get_properties(host), name, value,free_ctn);
291 /** @ingroup m_host_management
293 * @brief Determine if a host is up and running.
295 * 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.
297 * @param host host to test
298 * @return Returns true if the host is up and running, and false if it's currently down
300 int MSG_host_is_on(msg_host_t host)
302 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
303 return sg_host_get_state(host);
305 /** @ingroup m_host_management
307 * @brief Determine if a host is currently off.
309 * 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.
311 int MSG_host_is_off(msg_host_t host)
313 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
314 return !(sg_host_get_state(host));
317 /** \ingroup m_host_management
318 * \brief Set the parameters of a given host
321 * \param params a prameter object
323 void MSG_host_set_params(msg_host_t host, vm_params_t params)
325 simcall_host_set_params(host, params);
328 /** \ingroup m_host_management
329 * \brief Get the parameters of a given host
332 * \param params a prameter object
334 void MSG_host_get_params(msg_host_t host, vm_params_t params)
336 simcall_host_get_params(host, params);
339 /** \ingroup m_host_management
340 * \brief Return the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
342 * \param host host to test
343 * \param pstate_index pstate to test
344 * \return Returns the processor speed associated with pstate_index
346 double MSG_host_get_power_peak_at(msg_host_t host, int pstate_index) {
347 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
348 return (simcall_host_get_power_peak_at(host, pstate_index));
351 /** \ingroup m_host_management
352 * \brief Return the current speed of the processor (in flop/s)
354 * \param host host to test
355 * \return Returns the current processor speed
357 double MSG_host_get_current_power_peak(msg_host_t host) {
358 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
359 return simcall_host_get_current_power_peak(host);
362 /** \ingroup m_host_management
363 * \brief Return the total count of pstates defined for a host. See also @ref SURF_plugin_energy.
365 * \param host host to test
367 int MSG_host_get_nb_pstates(msg_host_t host) {
368 return sg_host_get_nb_pstates(host);
371 /** \ingroup m_host_management
372 * \brief Sets the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
374 * \param host host to test
375 * \param pstate_index pstate to switch to
377 void MSG_host_set_pstate(msg_host_t host, int pstate_index) {
378 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
380 simcall_host_set_pstate(host, pstate_index);
382 /** \ingroup m_host_management
383 * \brief Gets the pstate at which the given host is currently running. See also @ref SURF_plugin_energy.
385 * \param host host to test
387 int MSG_host_get_pstate(msg_host_t host) {
388 return sg_host_get_pstate(host);
391 /** \ingroup m_host_management
392 * \brief Return the total energy consumed by a host (in Joules). See also @ref SURF_plugin_energy.
394 * \param host host to test
395 * \return Returns the consumed energy
397 double MSG_host_get_consumed_energy(msg_host_t host) {
398 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
399 return sg_host_get_consumed_energy(host);
401 /** \ingroup m_host_management
402 * \brief Returns the amount of watt dissipated at the given pstate when the host is idling
405 double MSG_host_get_wattmin_at(msg_host_t host, int pstate){
406 return simcall_host_get_wattmin_at(host, pstate);
408 /** \ingroup m_host_management
409 * \brief Returns the amount of watt dissipated at the given pstate when the host burns CPU at 100%
412 double MSG_host_get_wattmax_at(msg_host_t host, int pstate){
413 return simcall_host_get_wattmax_at(host, pstate);
416 /** \ingroup m_host_management
417 * \brief Return the list of mount point names on an host.
419 * \return a dict containing all mount point on the host (mount_name => msg_storage_t)
421 xbt_dict_t MSG_host_get_mounted_storage_list(msg_host_t host)
423 xbt_assert((host != NULL), "Invalid parameters");
424 return (simcall_host_get_mounted_storage_list(host));
427 /** \ingroup m_host_management
428 * \brief Return the list of storages attached to an host.
430 * \return a dynar containing all storages (name) attached to the host
432 xbt_dynar_t MSG_host_get_attached_storage_list(msg_host_t host)
434 xbt_assert((host != NULL), "Invalid parameters");
435 return (simcall_host_get_attached_storage_list(host));
438 /** \ingroup m_host_management
439 * \brief Return the content of mounted storages on an host.
441 * \return a dict containing content (as a dict) of all storages mounted on the host
443 xbt_dict_t MSG_host_get_storage_content(msg_host_t host)
445 xbt_assert((host != NULL), "Invalid parameters");
446 xbt_dict_t contents = xbt_dict_new_homogeneous(NULL);
447 msg_storage_t storage;
450 xbt_dict_cursor_t cursor = NULL;
452 xbt_dict_t storage_list = simcall_host_get_mounted_storage_list(host);
454 xbt_dict_foreach(storage_list,cursor,mount_name,storage_name){
455 storage = (msg_storage_t)xbt_lib_get_elm_or_null(storage_lib,storage_name);
456 xbt_dict_t content = simcall_storage_get_content(storage);
457 xbt_dict_set(contents,mount_name, content,NULL);
459 xbt_dict_free(&storage_list);
463 int __MSG_host_get_file_descriptor_id(msg_host_t host){
464 msg_host_priv_t priv = sg_host_msg(host);
465 xbt_assert(!xbt_dynar_is_empty(priv->file_descriptor_table),
466 "Too much files are opened! Some have to be closed.");
467 return xbt_dynar_pop_as(priv->file_descriptor_table, int);
470 void __MSG_host_release_file_descriptor_id(msg_host_t host, int id){
471 msg_host_priv_t priv = sg_host_msg(host);
472 xbt_dynar_push_as(priv->file_descriptor_table, int, id);