1 /* Copyright (c) 2013-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_HOST_H_
7 #define SIMGRID_HOST_H_
10 #include <xbt/dynar.h>
11 #include <simgrid/forward.h>
14 /** Returns an array of all existing hosts (use sg_host_count() to know the array size).
16 * @remark The host order in this array is generally different from the
17 * creation/declaration order in the XML platform (we use a hash table
20 XBT_PUBLIC sg_host_t* sg_host_list();
22 /** Returns the amount of hosts existing in the platform. */
23 XBT_PUBLIC size_t sg_host_count();
26 * @brief Return a dynar containing all the hosts declared at a given point of time (including VMs)
27 * @remark The host order in the returned array is generally different from the host creation/declaration order in the
28 * XML platform (we use a hash table internally)
30 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_list()") XBT_PUBLIC xbt_dynar_t sg_hosts_as_dynar();
32 XBT_PUBLIC size_t sg_host_extension_create(void (*deleter)(void*));
33 XBT_PUBLIC void* sg_host_extension_get(const_sg_host_t host, size_t rank);
35 /** Finds a host from its name */
36 XBT_PUBLIC sg_host_t sg_host_by_name(const char* name);
38 /** @brief Return the name of the sg_host_t. */
39 XBT_PUBLIC const char* sg_host_get_name(const_sg_host_t host);
41 // ========== User Data ==============
42 /** @brief Return the user data of a #sg_host_t.
44 * This functions returns the user data associated to @a host if any.
46 XBT_PUBLIC void* sg_host_get_data(const_sg_host_t host);
48 /** @brief Set the user data of a #sg_host_t.
50 * This functions attach @a data to @a host.
52 XBT_PUBLIC void sg_host_set_data(sg_host_t host, void* userdata);
55 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_data()") XBT_PUBLIC void* sg_host_data(const_sg_host_t host);
56 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_set_data()") XBT_PUBLIC
57 void sg_host_data_set(sg_host_t host, void* userdata);
60 // ========= storage related functions ============
61 XBT_PUBLIC void sg_host_get_disks(const_sg_host_t host, unsigned int* disk_count, sg_disk_t** disks);
63 // =========== user-level functions ===============
64 /** @brief Return the speed of the processor (in flop/s), regardless of the current load on the machine. */
65 XBT_PUBLIC double sg_host_get_speed(const_sg_host_t host);
66 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_speed()") XBT_PUBLIC double sg_host_speed(const_sg_host_t host);
67 XBT_PUBLIC double sg_host_get_pstate_speed(const_sg_host_t host, int pstate_index);
69 XBT_PUBLIC double sg_host_get_available_speed(const_sg_host_t host);
71 XBT_PUBLIC int sg_host_core_count(const_sg_host_t host);
73 /** @brief Returns the current computation load (in flops per second).
76 XBT_PUBLIC double sg_host_get_load(const_sg_host_t host);
77 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_load()") XBT_PUBLIC double sg_host_load(const_sg_host_t host);
79 /** @brief Return the location on which the current process is running. */
80 XBT_PUBLIC sg_host_t sg_host_self();
82 XBT_PUBLIC const char* sg_host_self_get_name();
84 /** @brief Return the total count of pstates defined for a host.
87 * See also :ref:`plugin_host_energy`.
90 * @param host host to test
92 XBT_PUBLIC unsigned long sg_host_get_nb_pstates(const_sg_host_t host);
94 XBT_PUBLIC int sg_host_get_pstate(const_sg_host_t host);
95 XBT_PUBLIC void sg_host_set_pstate(sg_host_t host, int pstate);
97 XBT_PUBLIC void sg_host_turn_on(sg_host_t host);
98 XBT_PUBLIC void sg_host_turn_off(sg_host_t host);
99 XBT_PUBLIC int sg_host_is_on(const_sg_host_t host);
101 /** @ingroup m_host_management
102 * @brief Returns a xbt_dict_t consisting of the list of properties assigned to this host
105 * @return a dict containing the properties
107 XBT_PUBLIC xbt_dict_t sg_host_get_properties(const_sg_host_t host);
109 /** @ingroup m_host_management
110 * @brief Returns the value of a given host property
113 * @param name a property name
114 * @return value of a property (or nullptr if property not set)
116 XBT_PUBLIC const char* sg_host_get_property_value(const_sg_host_t host, const char* name);
118 /** @ingroup m_host_management
119 * @brief Change the value of a given host property
122 * @param name a property name
123 * @param value what to change the property to
125 XBT_PUBLIC void sg_host_set_property_value(sg_host_t host, const char* name, const char* value);
127 XBT_PUBLIC void sg_host_get_route(const_sg_host_t from, const_sg_host_t to, xbt_dynar_t links);
128 XBT_PUBLIC double sg_host_get_route_latency(const_sg_host_t from, const_sg_host_t to);
129 XBT_PUBLIC double sg_host_get_route_bandwidth(const_sg_host_t from, const_sg_host_t to);
130 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_route()") XBT_PUBLIC
131 void sg_host_route(const_sg_host_t from, const_sg_host_t to, xbt_dynar_t links);
132 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_route_latency()") XBT_PUBLIC
133 double sg_host_route_latency(const_sg_host_t from, const_sg_host_t to);
134 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_get_route_bandwidth()") XBT_PUBLIC
135 double sg_host_route_bandwidth(const_sg_host_t from, const_sg_host_t to);
136 XBT_PUBLIC void sg_host_sendto(sg_host_t from, sg_host_t to, double byte_amount);
139 XBT_ATTRIB_DEPRECATED_v330("Please use sg_host_sendto") inline void sg_host_send_to(sg_host_t from, sg_host_t to,
142 sg_host_sendto(from, to, byte_amount);
146 XBT_PUBLIC void sg_host_dump(const_sg_host_t ws);
148 XBT_PUBLIC void sg_host_get_actor_list(const_sg_host_t host, xbt_dynar_t whereto);
151 #endif /* SIMGRID_HOST_H_ */