src/simgrid/host.cpp

   1 /* Copyright (c) 2013-2016. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "xbt/dict.h"
   8 #include "simgrid/host.h"
   9 #include <xbt/Extendable.hpp>
  10 #include <simgrid/s4u/host.hpp>
  11
  12 #include "src/surf/HostImpl.hpp"
  13 #include "surf/surf.h" // routing_get_network_element_type FIXME:killme
  14
  15 #include "src/simix/smx_private.hpp"
  16
  17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(sg_host, sd, "Logging specific to sg_hosts");
  18
  19 size_t sg_host_count()
  20 {
  21   return xbt_dict_length(host_list);
  22 }
  23 /** @brief Returns the host list
  24  *
  25  * Uses sg_host_count() to know the array size.
  26  *
  27  * \return an array of \ref sg_host_t containing all the hosts in the platform.
  28  * \remark The host order in this array is generally different from the
  29  * creation/declaration order in the XML platform (we use a hash table
  30  * internally).
  31  * \see sg_host_count()
  32  */
  33 sg_host_t *sg_host_list(void) {
  34   xbt_assert(sg_host_count() > 0, "There is no host!");
  35   return (sg_host_t*)xbt_dynar_to_array(sg_hosts_as_dynar());
  36 }
  37
  38 const char *sg_host_get_name(sg_host_t host)
  39 {
  40   return host->name().c_str();
  41 }
  42
  43 void* sg_host_extension_get(sg_host_t host, size_t ext)
  44 {
  45   return host->extension(ext);
  46 }
  47
  48 size_t sg_host_extension_create(void(*deleter)(void*))
  49 {
  50   return simgrid::s4u::Host::extension_create(deleter);
  51 }
  52
  53 sg_host_t sg_host_by_name(const char *name)
  54 {
  55   return simgrid::s4u::Host::by_name_or_null(name);
  56 }
  57
  58 sg_host_t sg_host_by_name_or_create(const char *name)
  59 {
  60   return simgrid::s4u::Host::by_name_or_create(name);
  61 }
  62
  63 xbt_dynar_t sg_hosts_as_dynar(void)
  64 {
  65   xbt_dynar_t res = xbt_dynar_new(sizeof(sg_host_t),NULL);
  66
  67   xbt_dict_cursor_t cursor = nullptr;
  68   const char* name = nullptr;
  69   simgrid::s4u::Host* host = nullptr;
  70   xbt_dict_foreach(host_list, cursor, name, host)
  71     if (host && host->pimpl_netcard && host->pimpl_netcard->isHost())
  72        xbt_dynar_push(res, &host);
  73   return res;
  74 }
  75
  76 // ========= Layering madness ==============*
  77
  78 #include "src/surf/cpu_interface.hpp"
  79 #include "src/surf/surf_routing.hpp"
  80
  81 // ========== User data Layer ==========
  82 void *sg_host_user(sg_host_t host) {
  83   return host->extension(USER_HOST_LEVEL);
  84 }
  85 void sg_host_user_set(sg_host_t host, void* userdata) {
  86   host->extension_set(USER_HOST_LEVEL,userdata);
  87 }
  88 void sg_host_user_destroy(sg_host_t host) {
  89   host->extension_set(USER_HOST_LEVEL, nullptr);
  90 }
  91
  92 // ========== MSG Layer ==============
  93 msg_host_priv_t sg_host_msg(sg_host_t host) {
  94   return (msg_host_priv_t) host->extension(MSG_HOST_LEVEL);
  95 }
  96 void sg_host_msg_set(sg_host_t host, msg_host_priv_t smx_host) {
  97   host->extension_set(MSG_HOST_LEVEL, smx_host);
  98 }
  99
 100 // ========== Simix layer =============
 101 smx_host_priv_t sg_host_simix(sg_host_t host){
 102   return (smx_host_priv_t) host->extension(SIMIX_HOST_LEVEL);
 103 }
 104 void sg_host_simix_set(sg_host_t host, smx_host_priv_t smx_host) {
 105   host->extension_set(SIMIX_HOST_LEVEL, smx_host);
 106 }
 107 void sg_host_simix_destroy(sg_host_t host) {
 108   host->extension_set(SIMIX_HOST_LEVEL, nullptr);
 109 }
 110
 111 // ========= storage related functions ============
 112 xbt_dict_t sg_host_get_mounted_storage_list(sg_host_t host){
 113   return host->extension<simgrid::surf::HostImpl>()->getMountedStorageList();
 114 }
 115
 116 xbt_dynar_t sg_host_get_attached_storage_list(sg_host_t host){
 117   return host->extension<simgrid::surf::HostImpl>()->getAttachedStorageList();
 118 }
 119
 120
 121 // =========== user-level functions ===============
 122 // ================================================
 123 /** @brief Returns the total speed of a host */
 124 double sg_host_speed(sg_host_t host)
 125 {
 126   return host->speed();
 127 }
 128
 129 double sg_host_get_available_speed(sg_host_t host)
 130 {
 131   return host->pimpl_cpu->getAvailableSpeed();
 132 }
 133
 134 /** @brief Returns the number of power states for a host.
 135  *
 136  *  See also @ref SURF_plugin_energy.
 137  */
 138 int sg_host_get_nb_pstates(sg_host_t host) {
 139   return host->pstatesCount();
 140 }
 141
 142 /** @brief Gets the pstate at which that host currently runs.
 143  *
 144  *  See also @ref SURF_plugin_energy.
 145  */
 146 int sg_host_get_pstate(sg_host_t host) {
 147   return host->pstate();
 148 }
 149 /** @brief Sets the pstate at which that host should run.
 150  *
 151  *  See also @ref SURF_plugin_energy.
 152  */
 153 void sg_host_set_pstate(sg_host_t host,int pstate) {
 154   host->setPstate(pstate);
 155 }
 156
 157 /** @brief Get the properties of an host */
 158 xbt_dict_t sg_host_get_properties(sg_host_t host) {
 159   return host->properties();
 160 }
 161
 162 /** \ingroup m_host_management
 163  * \brief Returns the value of a given host property
 164  *
 165  * \param host a host
 166  * \param name a property name
 167  * \return value of a property (or NULL if property not set)
 168 */
 169 const char *sg_host_get_property_value(sg_host_t host, const char *name)
 170 {
 171   return (const char*) xbt_dict_get_or_null(sg_host_get_properties(host), name);
 172 }
 173
 174 /** @brief Displays debugging information about a host */
 175 void sg_host_dump(sg_host_t host)
 176 {
 177   xbt_dict_t props;
 178   xbt_dict_cursor_t cursor=NULL;
 179   char *key,*data;
 180
 181   XBT_INFO("Displaying host %s", sg_host_get_name(host));
 182   XBT_INFO("  - speed: %.0f", host->speed());
 183   XBT_INFO("  - available speed: %.2f", sg_host_get_available_speed(host));
 184   props = sg_host_get_properties(host);
 185
 186   if (!xbt_dict_is_empty(props)){
 187     XBT_INFO("  - properties:");
 188
 189     xbt_dict_foreach(props,cursor,key,data) {
 190       XBT_INFO("    %s->%s",key,data);
 191     }
 192   }
 193 }