src/s4u/s4u_host.cpp

   1 /* Copyright (c) 2006-2014. 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 <string>
   8 #include <functional>
   9 #include <stdexcept>
  10
  11 #include <unordered_map>
  12
  13 #include <simgrid/simix.hpp>
  14
  15 #include "xbt/log.h"
  16 #include "src/msg/msg_private.h"
  17 #include "src/simix/smx_process_private.h"
  18 #include "src/simix/smx_private.hpp"
  19 #include "src/surf/cpu_interface.hpp"
  20 #include "src/surf/host_interface.hpp"
  21
  22 #include "simgrid/s4u/host.hpp"
  23 #include "simgrid/s4u/storage.hpp"
  24
  25 int MSG_HOST_LEVEL;
  26 int SD_HOST_LEVEL;
  27 int SIMIX_HOST_LEVEL;
  28 int ROUTING_HOST_LEVEL;
  29 int USER_HOST_LEVEL;
  30
  31 namespace simgrid {
  32 namespace s4u {
  33
  34 simgrid::xbt::signal<void(Host&)> Host::onCreation;
  35 simgrid::xbt::signal<void(Host&)> Host::onDestruction;
  36 simgrid::xbt::signal<void(Host&)> Host::onStateChange;
  37
  38 Host::Host(const char* name)
  39   : name_(name)
  40 {
  41 }
  42
  43 Host::~Host() {
  44         delete pimpl_cpu;
  45         if (mounts != NULL)
  46                 delete mounts;
  47 }
  48
  49 Host *Host::by_name(std::string name) {
  50         Host* host = Host::by_name_or_null(name.c_str());
  51         // TODO, raise an exception instead?
  52         if (host == nullptr)
  53                 xbt_die("No such host: %s", name.c_str());
  54         return host;
  55 }
  56
  57 Host *Host::current(){
  58         smx_process_t smx_proc = SIMIX_process_self();
  59         if (smx_proc == NULL)
  60                 xbt_die("Cannot call Host::current() from the maestro context");
  61         return SIMIX_process_get_host(smx_proc);
  62 }
  63
  64 void Host::turn_on() {
  65         simgrid::simix::kernel(std::bind(SIMIX_host_on, this));
  66 }
  67
  68 void Host::turn_off() {
  69   simgrid::simix::kernel(std::bind(SIMIX_host_off, this, SIMIX_process_self()));
  70 }
  71
  72 bool Host::is_on() {
  73         return this->pimpl_cpu->isOn();
  74 }
  75
  76 int Host::pstates_count() const {
  77         return this->pimpl_cpu->getNbPStates();
  78 }
  79
  80 boost::unordered_map<std::string, Storage*> const& Host::mounted_storages() {
  81         if (mounts == NULL) {
  82                 mounts = new boost::unordered_map<std::string, Storage*> ();
  83
  84                 xbt_dict_t dict = this->mounted_storages_as_dict();
  85
  86                 xbt_dict_cursor_t cursor;
  87                 char *mountname;
  88                 char *storagename;
  89                 xbt_dict_foreach(dict, cursor, mountname, storagename) {
  90                         mounts->insert({mountname, &Storage::byName(storagename)});
  91                 }
  92                 xbt_dict_free(&dict);
  93         }
  94
  95         return *mounts;
  96 }
  97
  98 /** Get the properties assigned to a host */
  99 xbt_dict_t Host::properties() {
 100   return simgrid::simix::kernel([&] {
 101                 simgrid::surf::Host* surf_host = this->extension<simgrid::surf::Host>();
 102                 return surf_host->getProperties();
 103         });
 104 }
 105
 106 /** Get the processes attached to the host */
 107 xbt_swag_t Host::processes()
 108 {
 109   return simgrid::simix::kernel([&]() {
 110     return ((smx_host_priv_t)this->extension(SIMIX_HOST_LEVEL))->process_list;
 111   });
 112 }
 113
 114 /** Get the peak power of a host */
 115 double Host::current_power_peak()
 116 {
 117   return simgrid::simix::kernel([&] {
 118     return this->pimpl_cpu->getCurrentPowerPeak();
 119   });
 120 }
 121
 122 /** Get one power peak (in flops/s) of a host at a given pstate */
 123 double Host::power_peak_at(int pstate_index)
 124 {
 125   return simgrid::simix::kernel([&] {
 126     return this->pimpl_cpu->getPowerPeakAt(pstate_index);
 127   });
 128 }
 129
 130 /** @brief Get the speed of the cpu associated to a host */
 131 double Host::speed() {
 132         return pimpl_cpu->getSpeed(1.0);
 133 }
 134 /** @brief Returns the number of core of the processor. */
 135 int Host::core_count() {
 136         return pimpl_cpu->getCore();
 137 }
 138
 139 Host* Host::by_name_or_null(const char* name)
 140 {
 141   return (Host*) xbt_dict_get_or_null(host_list, name);
 142 }
 143
 144 Host* Host::by_name_or_create(const char* name)
 145 {
 146   Host* host = by_name_or_null(name);
 147   if (host == nullptr) {
 148     host = new Host(name);
 149     xbt_dict_set(host_list, name, host, NULL);
 150   }
 151   return host;
 152 }
 153
 154 /** @brief Set the pstate at which the host should run */
 155 void Host::set_pstate(int pstate_index)
 156 {
 157   simgrid::simix::kernel(std::bind(
 158       &simgrid::surf::Cpu::setPState, pimpl_cpu, pstate_index
 159   ));
 160 }
 161 /** @brief Retrieve the pstate at which the host is currently running */
 162 int Host::pstate()
 163 {
 164   return pimpl_cpu->getPState();
 165 }
 166
 167 void Host::get_parameters(vm_params_t params)
 168 {
 169   simgrid::simix::kernel([&]() {
 170     this->extension<simgrid::surf::Host>()->getParams(params);
 171   });
 172 }
 173
 174 void Host::set_parameters(vm_params_t params)
 175 {
 176   simgrid::simix::kernel([&]() {
 177     this->extension<simgrid::surf::Host>()->setParams(params);
 178   });
 179 }
 180
 181 /**
 182  * \ingroup simix_storage_management
 183  * \brief Returns the list of storages mounted on an host.
 184  * \return a dict containing all storages mounted on the host
 185  */
 186 xbt_dict_t Host::mounted_storages_as_dict()
 187 {
 188   return simgrid::simix::kernel([&] {
 189     return this->extension<simgrid::surf::Host>()->getMountedStorageList();
 190   });
 191 }
 192
 193 /**
 194  * \ingroup simix_storage_management
 195  * \brief Returns the list of storages attached to an host.
 196  * \return a dict containing all storages attached to the host
 197  */
 198 xbt_dynar_t Host::attached_storages()
 199 {
 200   return simgrid::simix::kernel([&] {
 201     return this->extension<simgrid::surf::Host>()->getAttachedStorageList();
 202   });
 203 }
 204
 205 } // namespace simgrid
 206 } // namespace s4u