1 /* Copyright (c) 2004-2014. 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. */
7 #include "msg/msg_private.h"
8 #include "msg/msg_mailbox.h"
9 #include "xbt/sysdep.h"
11 #include "simgrid/simix.h"
13 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(msg);
15 /** @addtogroup m_host_management
16 * \htmlonly <!-- DOXYGEN_NAVBAR_LABEL="Hosts" --> \endhtmlonly
17 * (#msg_host_t) and the functions for managing it.
19 * A <em>location</em> (or <em>host</em>) is any possible place where
20 * a process may run. Thus it may be represented as a
21 * <em>physical resource with computing capabilities</em>, some
22 * <em>mailboxes</em> to enable running process to communicate with
23 * remote ones, and some <em>private data</em> that can be only
24 * accessed by local process.
28 /********************************* Host **************************************/
29 msg_host_t __MSG_host_create(smx_host_t workstation)
31 const char *name = SIMIX_host_get_name(workstation);
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 xbt_lib_set(host_lib, name, MSG_HOST_LEVEL, priv);
60 return xbt_lib_get_elm_or_null(host_lib, name);
64 /** \ingroup msg_host_management
65 * \brief Finds a msg_host_t using its name.
67 * This is a name directory service
68 * \param name the name of an host.
69 * \return the corresponding host
71 msg_host_t MSG_get_host_by_name(const char *name)
73 return (msg_host_t) xbt_lib_get_elm_or_null(host_lib,name);
76 static const char *msg_data = "data";
77 /** \ingroup m_host_management
79 * \brief Set the user data of a #msg_host_t.
81 * This functions checks whether some data has already been associated to \a host
82 or not and attach \a data to \a host if it is possible.
84 msg_error_t MSG_host_set_data(msg_host_t host, void *data)
86 MSG_host_set_property_value(host, msg_data, data, NULL);
90 /** \ingroup m_host_management
92 * \brief Return the user data of a #msg_host_t.
94 * This functions checks whether \a host is a valid pointer or not and return
95 the user data associated to \a host if it is possible.
97 void *MSG_host_get_data(msg_host_t host)
99 return (void *)MSG_host_get_property_value(host, msg_data);
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)
150 unsigned int size = xbt_dict_size(priv->dp_objs);
152 XBT_WARN("dp_objs: %u pending task?", size);
153 xbt_dict_free(&priv->dp_objs);
154 xbt_dict_free(&priv->affinity_mask_db);
156 #ifdef MSG_USE_DEPRECATED
157 free(priv->mailboxes);
164 * \brief Destroys a host (internal call only)
166 void __MSG_host_destroy(msg_host_t host)
168 const char *name = MSG_host_get_name(host);
170 * What happens if VMs still remain on this host?
171 * Revisit here after the surf layer gets stable.
174 xbt_lib_unset(host_lib, name, MSG_HOST_LEVEL, 1);
177 /** \ingroup m_host_management
178 * \brief Return the current number MSG hosts.
180 int MSG_get_host_number(void)
182 return xbt_lib_length(host_lib);
185 #ifdef MSG_USE_DEPRECATED
186 msg_host_t *MSG_get_host_table(void)
190 xbt_lib_cursor_t cursor;
194 if (xbt_lib_length(host_lib) == 0)
197 array = xbt_new0(void *, xbt_lib_length(host_lib));
199 xbt_lib_foreach(host_lib, cursor, key, data) {
200 if(routing_get_network_element_type(key) == SURF_NETWORK_ELEMENT_HOST)
201 array[i++] = data[MSG_HOST_LEVEL];
204 return (msg_host_t *)array;
208 /** \ingroup m_host_management
209 * \brief Return a dynar containing all the hosts declared at a given point of time
211 xbt_dynar_t MSG_hosts_as_dynar(void) {
212 xbt_lib_cursor_t cursor;
215 xbt_dynar_t res = xbt_dynar_new(sizeof(msg_host_t),NULL);
217 xbt_lib_foreach(host_lib, cursor, key, data) {
218 if(routing_get_network_element_type(key) == SURF_NETWORK_ELEMENT_HOST) {
219 xbt_dictelm_t elm = xbt_dict_cursor_get_elm(cursor);
220 xbt_dynar_push(res, &elm);
226 /** \ingroup m_host_management
227 * \brief Return the number of MSG tasks currently running on a
228 * #msg_host_t. The external load is not taken in account.
230 int MSG_get_host_msgload(msg_host_t h)
232 xbt_assert((h != NULL), "Invalid parameters");
233 xbt_die( "Not implemented yet");
238 /** \ingroup m_host_management
239 * \brief Return the speed of the processor (in flop/s), regardless of
240 the current load on the machine.
242 double MSG_get_host_speed(msg_host_t h)
244 xbt_assert((h != NULL), "Invalid parameters");
246 return (simcall_host_get_speed(h));
250 /** \ingroup m_host_management
251 * \brief Return the number of cores.
254 * \return the number of cores
256 int MSG_host_get_core_number(msg_host_t host)
258 xbt_assert((host != NULL), "Invalid parameters");
260 return (simcall_host_get_core(host));
263 /** \ingroup m_host_management
264 * \brief Return the list of processes attached to an host.
267 * \return a swag with the attached processes
269 xbt_swag_t MSG_host_get_process_list(msg_host_t host)
271 xbt_assert((host != NULL), "Invalid parameters");
273 return (simcall_host_get_process_list(host));
277 /** \ingroup m_host_management
278 * \brief Returns the value of a given host property
281 * \param name a property name
282 * \return value of a property (or NULL if property not set)
284 const char *MSG_host_get_property_value(msg_host_t host, const char *name)
286 return xbt_dict_get_or_null(MSG_host_get_properties(host), name);
289 /** \ingroup m_host_management
290 * \brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
293 * \return a dict containing the properties
295 xbt_dict_t MSG_host_get_properties(msg_host_t host)
297 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
299 return (simcall_host_get_properties(host));
302 /** \ingroup m_host_management
303 * \brief Change the value of a given host property
306 * \param name a property name
307 * \param value what to change the property to
308 * \param free_ctn the freeing function to use to kill the value on need
310 void MSG_host_set_property_value(msg_host_t host, const char *name, char *value,void_f_pvoid_t free_ctn) {
312 xbt_dict_set(MSG_host_get_properties(host), name, value,free_ctn);
316 /** @ingroup m_host_management
318 * @brief Determine if a host is up and running.
320 * 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.
322 * @param host host to test
323 * @return Returns true if the host is up and running, and false if it's currently down
325 int MSG_host_is_on(msg_host_t host)
327 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
328 return (simcall_host_get_state(host));
330 /** @ingroup m_host_management
332 * @brief Determine if a host is currently off.
334 * 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.
336 int MSG_host_is_off(msg_host_t host)
338 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
339 return !(simcall_host_get_state(host));
342 /** \ingroup m_host_management
343 * \brief Set the parameters of a given host
346 * \param params a prameter object
348 void MSG_host_set_params(msg_host_t host, ws_params_t params)
350 simcall_host_set_params(host, params);
353 /** \ingroup m_host_management
354 * \brief Get the parameters of a given host
357 * \param params a prameter object
359 void MSG_host_get_params(msg_host_t host, ws_params_t params)
361 simcall_host_get_params(host, params);
364 /** \ingroup m_host_management
365 * \brief Return the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
367 * \param host host to test
368 * \param pstate_index pstate to test
369 * \return Returns the processor speed associated with pstate_index
371 double MSG_host_get_power_peak_at(msg_host_t host, int pstate_index) {
372 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
373 return (simcall_host_get_power_peak_at(host, pstate_index));
376 /** \ingroup m_host_management
377 * \brief Return the current speed of the processor (in flop/s)
379 * \param host host to test
380 * \return Returns the current processor speed
382 double MSG_host_get_current_power_peak(msg_host_t host) {
383 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
384 return simcall_host_get_current_power_peak(host);
387 /** \ingroup m_host_management
388 * \brief Return the total count of pstates defined for a host. See also @ref SURF_plugin_energy.
390 * \param host host to test
392 int MSG_host_get_nb_pstates(msg_host_t host) {
394 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
395 return (simcall_host_get_nb_pstates(host));
398 /** \ingroup m_host_management
399 * \brief Sets the speed of the processor (in flop/s) at a given pstate. See also @ref SURF_plugin_energy.
401 * \param host host to test
402 * \param pstate_index pstate to switch to
404 void MSG_host_set_pstate(msg_host_t host, int pstate_index) {
405 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
407 simcall_host_set_pstate(host, pstate_index);
409 /** \ingroup m_host_management
410 * \brief Gets the pstate at which the given host is currently running. See also @ref SURF_plugin_energy.
412 * \param host host to test
414 int MSG_host_get_pstate(msg_host_t host) {
415 return simcall_host_get_pstate(host);
418 /** \ingroup m_host_management
419 * \brief Return the total energy consumed by a host (in Joules). See also @ref SURF_plugin_energy.
421 * \param host host to test
422 * \return Returns the consumed energy
424 double MSG_host_get_consumed_energy(msg_host_t host) {
425 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
426 return simcall_host_get_consumed_energy(host);
429 /** \ingroup m_host_management
430 * \brief Return the list of mount point names on an host.
432 * \return a dict containing all mount point on the host (mount_name => msg_storage_t)
434 xbt_dict_t MSG_host_get_mounted_storage_list(msg_host_t host)
436 xbt_assert((host != NULL), "Invalid parameters");
437 return (simcall_host_get_mounted_storage_list(host));
440 /** \ingroup m_host_management
441 * \brief Return the list of storages attached to an host.
443 * \return a dynar containing all storages (name) attached to the host
445 xbt_dynar_t MSG_host_get_attached_storage_list(msg_host_t host)
447 xbt_assert((host != NULL), "Invalid parameters");
448 return (simcall_host_get_attached_storage_list(host));
451 /** \ingroup msg_host_management
452 * \brief Return the content of mounted storages on an host.
454 * \return a dict containing content (as a dict) of all storages mounted on the host
456 xbt_dict_t MSG_host_get_storage_content(msg_host_t host)
458 xbt_assert((host != NULL), "Invalid parameters");
459 xbt_dict_t contents = xbt_dict_new_homogeneous(NULL);
460 msg_storage_t storage;
463 xbt_dict_cursor_t cursor = NULL;
465 xbt_dict_t storage_list = simcall_host_get_mounted_storage_list(host);
467 xbt_dict_foreach(storage_list,cursor,mount_name,storage_name){
468 storage = (msg_storage_t)xbt_lib_get_elm_or_null(storage_lib,storage_name);
469 xbt_dict_t content = simcall_storage_get_content(storage);
470 xbt_dict_set(contents,mount_name, content,NULL);
472 xbt_dict_free(&storage_list);