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;
55 priv->affinity_mask_db = xbt_dict_new_homogeneous(NULL);
57 xbt_lib_set(host_lib, name, MSG_HOST_LEVEL, priv);
59 return xbt_lib_get_elm_or_null(host_lib, name);
63 /** \ingroup msg_host_management
64 * \brief Finds a msg_host_t using its name.
66 * This is a name directory service
67 * \param name the name of an host.
68 * \return the corresponding host
70 msg_host_t MSG_get_host_by_name(const char *name)
72 return (msg_host_t) xbt_lib_get_elm_or_null(host_lib,name);
75 /** \ingroup m_host_management
77 * \brief Return the name of the #msg_host_t.
79 * This functions checks whether \a host is a valid pointer or not and return
82 const char *MSG_host_get_name(msg_host_t host) {
83 return SIMIX_host_get_name(host);
86 /** \ingroup m_host_management
88 * \brief Return the location on which the current process is executed.
90 msg_host_t MSG_host_self(void)
92 return MSG_process_get_host(NULL);
97 * \brief Start the host if it is off
99 void MSG_host_on(msg_host_t host)
101 simcall_host_on(host);
105 * \brief Stop the host if it is on
107 void MSG_host_off(msg_host_t host)
109 simcall_host_off(host);
113 * \brief Frees private data of a host (internal call only)
115 void __MSG_host_priv_free(msg_host_priv_t priv)
117 unsigned int size = xbt_dict_size(priv->dp_objs);
119 XBT_WARN("dp_objs: %u pending task?", size);
120 xbt_dict_free(&priv->dp_objs);
121 xbt_dict_free(&priv->affinity_mask_db);
123 #ifdef MSG_USE_DEPRECATED
124 free(priv->mailboxes);
131 * \brief Destroys a host (internal call only)
133 void __MSG_host_destroy(msg_host_t host)
135 const char *name = MSG_host_get_name(host);
137 * What happens if VMs still remain on this host?
138 * Revisit here after the surf layer gets stable.
141 xbt_lib_unset(host_lib, name, MSG_HOST_LEVEL, 1);
144 /** \ingroup m_host_management
145 * \brief Return the current number MSG hosts.
147 int MSG_get_host_number(void)
149 return xbt_lib_length(host_lib);
152 #ifdef MSG_USE_DEPRECATED
153 msg_host_t *MSG_get_host_table(void)
157 xbt_lib_cursor_t cursor;
161 if (xbt_lib_length(host_lib) == 0)
164 array = xbt_new0(void *, xbt_lib_length(host_lib));
166 xbt_lib_foreach(host_lib, cursor, key, data) {
167 if(routing_get_network_element_type(key) == SURF_NETWORK_ELEMENT_HOST)
168 array[i++] = data[MSG_HOST_LEVEL];
171 return (msg_host_t *)array;
175 /** \ingroup m_host_management
176 * \brief Return a dynar containing all the hosts declared at a given point of time
178 xbt_dynar_t MSG_hosts_as_dynar(void) {
179 xbt_lib_cursor_t cursor;
182 xbt_dynar_t res = xbt_dynar_new(sizeof(msg_host_t),NULL);
184 xbt_lib_foreach(host_lib, cursor, key, data) {
185 if(routing_get_network_element_type(key) == SURF_NETWORK_ELEMENT_HOST) {
186 xbt_dictelm_t elm = xbt_dict_cursor_get_elm(cursor);
187 xbt_dynar_push(res, &elm);
193 /** \ingroup m_host_management
194 * \brief Return the number of MSG tasks currently running on a
195 * #msg_host_t. The external load is not taken in account.
197 int MSG_get_host_msgload(msg_host_t h)
199 xbt_assert((h != NULL), "Invalid parameters");
200 xbt_die( "Not implemented yet");
205 /** \ingroup m_host_management
206 * \brief Return the speed of the processor (in flop/s), regardless of
207 the current load on the machine.
209 double MSG_get_host_speed(msg_host_t h)
211 xbt_assert((h != NULL), "Invalid parameters");
213 return (simcall_host_get_speed(h));
217 /** \ingroup m_host_management
218 * \brief Return the number of cores.
221 * \return the number of cores
223 int MSG_host_get_core_number(msg_host_t host)
225 xbt_assert((host != NULL), "Invalid parameters");
227 return (simcall_host_get_core(host));
230 /** \ingroup m_host_management
231 * \brief Return the list of processes attached to an host.
234 * \return a swag with the attached processes
236 xbt_swag_t MSG_host_get_process_list(msg_host_t host)
238 xbt_assert((host != NULL), "Invalid parameters");
240 return (simcall_host_get_process_list(host));
244 /** \ingroup m_host_management
245 * \brief Returns the value of a given host property
248 * \param name a property name
249 * \return value of a property (or NULL if property not set)
251 const char *MSG_host_get_property_value(msg_host_t host, const char *name)
253 return xbt_dict_get_or_null(MSG_host_get_properties(host), name);
256 /** \ingroup m_host_management
257 * \brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
260 * \return a dict containing the properties
262 xbt_dict_t MSG_host_get_properties(msg_host_t host)
264 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
266 return (simcall_host_get_properties(host));
269 /** \ingroup m_host_management
270 * \brief Change the value of a given host property
273 * \param name a property name
274 * \param value what to change the property to
275 * \param free_ctn the freeing function to use to kill the value on need
277 void MSG_host_set_property_value(msg_host_t host, const char *name, char *value,void_f_pvoid_t free_ctn) {
279 xbt_dict_set(MSG_host_get_properties(host), name, value,free_ctn);
283 /** \ingroup msg_gos_functions
284 * \brief Determine if a host is available.
286 * \param host host to test
287 * \return Returns 1 if host is available, 0 otherwise
289 int MSG_host_is_avail(msg_host_t host)
291 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
292 return (simcall_host_get_state(host));
295 /** \ingroup m_host_management
296 * \brief Set the parameters of a given host
299 * \param params a prameter object
301 void MSG_host_set_params(msg_host_t host, ws_params_t params)
303 simcall_host_set_params(host, params);
306 /** \ingroup m_host_management
307 * \brief Get the parameters of a given host
310 * \param params a prameter object
312 void MSG_host_get_params(msg_host_t host, ws_params_t params)
314 simcall_host_get_params(host, params);
317 /** \ingroup m_host_management
318 * \brief Return the speed of the processor (in flop/s) at a given pstate
320 * \param host host to test
321 * \param pstate_index pstate to test
322 * \return Returns the processor speed associated with pstate_index
324 double MSG_get_host_power_peak_at(msg_host_t host, int pstate_index) {
325 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
326 return (simcall_host_get_power_peak_at(host, pstate_index));
329 /** \ingroup m_host_management
330 * \brief Return the current speed of the processor (in flop/s)
332 * \param host host to test
333 * \return Returns the current processor speed
335 double MSG_get_host_current_power_peak(msg_host_t host) {
336 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
337 return simcall_host_get_current_power_peak(host);
340 /** \ingroup m_host_management
341 * \brief Return the number of pstates defined for a host
343 * \param host host to test
345 int MSG_get_host_nb_pstates(msg_host_t host) {
347 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
348 return (simcall_host_get_nb_pstates(host));
351 /** \ingroup m_host_management
352 * \brief Sets the speed of the processor (in flop/s) at a given pstate
354 * \param host host to test
355 * \param pstate_index pstate to switch to
357 void MSG_set_host_power_peak_at(msg_host_t host, int pstate_index) {
358 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
360 simcall_host_set_power_peak_at(host, pstate_index);
363 /** \ingroup m_host_management
364 * \brief Return the total energy consumed by a host (in Joules)
366 * \param host host to test
367 * \return Returns the consumed energy
369 double MSG_get_host_consumed_energy(msg_host_t host) {
370 xbt_assert((host != NULL), "Invalid parameters (host is NULL)");
371 return simcall_host_get_consumed_energy(host);
374 /** \ingroup m_host_management
375 * \brief Return the list of mount point names on an host.
377 * \return a dict containing all mount point on the host (mount_name => msg_storage_t)
379 xbt_dict_t MSG_host_get_storage_list(msg_host_t host)
381 xbt_assert((host != NULL), "Invalid parameters");
382 return (simcall_host_get_storage_list(host));
385 /** \ingroup msg_host_management
386 * \brief Return the content of mounted storages on an host.
388 * \return a dict containing content (as a dict) of all storages mounted on the host
390 xbt_dict_t MSG_host_get_storage_content(msg_host_t host)
392 xbt_assert((host != NULL), "Invalid parameters");
393 xbt_dict_t contents = xbt_dict_new_homogeneous(NULL);
394 msg_storage_t storage;
397 xbt_dict_cursor_t cursor = NULL;
399 xbt_dict_t storage_list = simcall_host_get_storage_list(host);
401 xbt_dict_foreach(storage_list,cursor,mount_name,storage_name){
402 storage = (msg_storage_t)xbt_lib_get_elm_or_null(storage_lib,storage_name);
403 xbt_dict_t content = simcall_storage_get_content(storage);
404 xbt_dict_set(contents,mount_name, content,NULL);
406 xbt_dict_free(&storage_list);