+
+double surf_host_get_wattmin_at(sg_host_t host, int pstate){
+ xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
+ std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
+ return hostIt->second->getWattMinAt(pstate);
+}
+double surf_host_get_wattmax_at(sg_host_t host, int pstate){
+ xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
+ std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
+ return hostIt->second->getWattMaxAt(pstate);
+}
+
+double surf_host_get_consumed_energy(sg_host_t host){
+ xbt_assert(surf_energy!=NULL, "The Energy plugin is not active. Please call sg_energy_plugin_init() during initialization.");
+ std::map<simgrid::surf::Host*, HostEnergy*>::iterator hostIt = surf_energy->find(host->extension<simgrid::surf::Host>());
+ return hostIt->second->getConsumedEnergy();
+}
+
+}
+}
+
+/* **************************** Public interface *************************** */
+
+/** \ingroup SURF_plugin_energy
+ * \brief Enable energy plugin
+ * \details Enable energy plugin to get joules consumption of each cpu. You should call this function before #MSG_init().
+ */
+void sg_energy_plugin_init() {
+ if (simgrid::energy::surf_energy == NULL) {
+
+ simgrid::energy::surf_energy = new std::map<simgrid::surf::Host*, simgrid::energy::HostEnergy*>();
+
+ /* The following attaches an anonymous function to the Host::onCreation signal */
+ /* Search for "C++ lambda" for more information on the syntax used here */
+ simgrid::surf::Host::onCreation.connect([](simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ (*simgrid::energy::surf_energy)[host] = new HostEnergy(host);
+ });
+
+ simgrid::surf::Host::onDestruction.connect([](simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ std::map<simgrid::surf::Host*, HostEnergy*>::iterator host_energy_it = simgrid::energy::surf_energy->find(host);
+ xbt_assert(host_energy_it != simgrid::energy::surf_energy->end(), "The host is not in surf_energy.");
+
+ HostEnergy *host_energy = host_energy_it->second;
+ update_consumption(host, host_energy);
+
+ XBT_INFO("Total energy of host %s: %f Joules", host->getName(), host_energy->getConsumedEnergy());
+ host_energy_it->second->unref();
+ simgrid::energy::surf_energy->erase(host_energy_it);
+ });
+
+ simgrid::surf::CpuAction::onStateChange.connect([](simgrid::surf::CpuAction *action,
+ e_surf_action_state_t old,
+ e_surf_action_state_t cur) {
+ const char *name = getActionCpu(action)->getName();
+ simgrid::surf::Host *host = sg_host_by_name(name)->extension<simgrid::surf::Host>();
+ simgrid::surf::VirtualMachine *vm = dynamic_cast<simgrid::surf::VirtualMachine*>(host);
+ if (vm) // If it's a VM, take the corresponding PM
+ host = vm->getPm()->extension<simgrid::surf::Host>();
+
+ HostEnergy *host_energy = (*simgrid::energy::surf_energy)[host];
+
+ if(host_energy->last_updated < surf_get_clock())
+ update_consumption(host, host_energy);
+
+ });
+
+ simgrid::surf::Host::onStateChange.connect([] (simgrid::surf::Host *host) {
+ if (dynamic_cast<simgrid::surf::VirtualMachine*>(host)) // Ignore virtual machines
+ return;
+
+ HostEnergy *host_energy = (*simgrid::energy::surf_energy)[host];
+
+ if(host_energy->last_updated < surf_get_clock())
+ update_consumption(host, host_energy);
+ });
+
+ simgrid::surf::surfExitCallbacks.connect([]() {
+ delete simgrid::energy::surf_energy;
+ simgrid::energy::surf_energy = NULL;
+ });
+ }
+}
+
+/** @brief Returns the total energy consumed by the host so far (in Joules)
+ *
+ * See also @ref SURF_plugin_energy.
+ */
+double sg_host_get_consumed_energy(sg_host_t host) {
+ return simgrid::energy::surf_host_get_consumed_energy(host);
+}
+
+/** @brief Get the amount of watt dissipated at the given pstate when the host is idling */
+double sg_host_get_wattmin_at(sg_host_t host, int pstate) {
+ return simgrid::simix::kernel(std::bind(
+ simgrid::energy::surf_host_get_wattmin_at, host, pstate
+ ));
