1 /* Copyright (c) 2006-2014. 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. */
11 #include <unordered_map>
13 #include "simgrid/s4u/engine.hpp"
14 #include "simgrid/s4u/host.hpp"
15 #include "simgrid/s4u/storage.hpp"
16 #include "simgrid/simix.hpp"
17 #include "src/kernel/routing/NetPoint.hpp"
18 #include "src/msg/msg_private.h"
19 #include "src/simix/ActorImpl.hpp"
20 #include "src/simix/smx_private.h"
21 #include "src/surf/HostImpl.hpp"
22 #include "src/surf/cpu_interface.hpp"
25 XBT_LOG_EXTERNAL_CATEGORY(surf_route);
27 std::unordered_map<std::string, simgrid::s4u::Host*> host_list; // FIXME: move it to Engine
29 int MSG_HOST_LEVEL = -1;
30 int USER_HOST_LEVEL = -1;
35 template class Extendable<simgrid::s4u::Host>;
40 simgrid::xbt::signal<void(Host&)> Host::onCreation;
41 simgrid::xbt::signal<void(Host&)> Host::onDestruction;
42 simgrid::xbt::signal<void(Host&)> Host::onStateChange;
43 simgrid::xbt::signal<void(Host&)> Host::onSpeedChange;
45 Host::Host(const char* name)
48 xbt_assert(Host::by_name_or_null(name) == nullptr, "Refusing to create a second host named '%s'.", name);
49 host_list[name_] = this;
50 new simgrid::surf::HostImpl(this);
55 xbt_assert(currentlyDestroying_, "Please call h->destroy() instead of manually deleting it.");
58 if (pimpl_netpoint != nullptr) // not removed yet by a children class
59 simgrid::s4u::Engine::instance()->netpointUnregister(pimpl_netpoint);
64 /** @brief Fire the required callbacks and destroy the object
66 * Don't delete directly an Host, call h->destroy() instead.
68 * This is cumbersome but this is the simplest solution to ensure that the
69 * onDestruction() callback receives a valid object (because of the destructor
70 * order in a class hierarchy).
74 if (!currentlyDestroying_) {
75 currentlyDestroying_ = true;
77 host_list.erase(name_);
82 Host* Host::by_name(std::string name)
84 return host_list.at(name); // Will raise a std::out_of_range if the host does not exist
86 Host* Host::by_name_or_null(const char* name)
88 return by_name_or_null(std::string(name));
90 Host* Host::by_name_or_null(std::string name)
92 if (host_list.find(name) == host_list.end())
94 return host_list.at(name);
97 Host *Host::current(){
98 smx_actor_t smx_proc = SIMIX_process_self();
99 if (smx_proc == nullptr)
100 xbt_die("Cannot call Host::current() from the maestro context");
101 return smx_proc->host;
104 void Host::turnOn() {
106 simgrid::simix::kernelImmediate([this] {
107 this->extension<simgrid::simix::Host>()->turnOn();
108 this->pimpl_cpu->turnOn();
109 onStateChange(*this);
114 void Host::turnOff() {
116 smx_actor_t self = SIMIX_process_self();
117 simgrid::simix::kernelImmediate([this, self] {
118 SIMIX_host_off(this, self);
119 onStateChange(*this);
125 return this->pimpl_cpu->isOn();
128 int Host::pstatesCount() const {
129 return this->pimpl_cpu->getNbPStates();
133 * \brief Find a route toward another host
135 * \param dest [IN] where to
136 * \param links [OUT] where to store the list of links (must exist, cannot be nullptr).
137 * \param latency [OUT] where to store the latency experienced on the path (or nullptr if not interested)
138 * It is the caller responsibility to initialize latency to 0 (we add to provided route)
139 * \pre links!=nullptr
141 * walk through the routing components tree and find a route between hosts
142 * by calling each "get_route" function in each routing component.
144 void Host::routeTo(Host* dest, std::vector<Link*>* links, double* latency)
146 std::vector<surf::LinkImpl*> linkImpls;
147 this->routeTo(dest, &linkImpls, latency);
148 for (surf::LinkImpl* l : linkImpls)
149 links->push_back(&l->piface_);
151 /** @brief Just like Host::routeTo, but filling an array of link implementations */
152 void Host::routeTo(Host* dest, std::vector<surf::LinkImpl*>* links, double* latency)
154 simgrid::kernel::routing::NetZoneImpl::getGlobalRoute(pimpl_netpoint, dest->pimpl_netpoint, links, latency);
155 if (XBT_LOG_ISENABLED(surf_route, xbt_log_priority_debug)) {
156 XBT_CDEBUG(surf_route, "Route from '%s' to '%s' (latency: %f):", cname(), dest->cname(),
157 (latency == nullptr ? -1 : *latency));
158 for (auto link : *links)
159 XBT_CDEBUG(surf_route, "Link %s", link->cname());
163 boost::unordered_map<std::string, Storage*> const& Host::mountedStorages() {
164 if (mounts == nullptr) {
165 mounts = new boost::unordered_map<std::string, Storage*> ();
167 xbt_dict_t dict = this->mountedStoragesAsDict();
169 xbt_dict_cursor_t cursor;
172 xbt_dict_foreach(dict, cursor, mountname, storagename) {
173 mounts->insert({mountname, &Storage::byName(storagename)});
175 xbt_dict_free(&dict);
181 /** Get the properties assigned to a host */
182 xbt_dict_t Host::properties() {
183 return simgrid::simix::kernelImmediate([this] {
184 return this->pimpl_->getProperties();
188 /** Retrieve the property value (or nullptr if not set) */
189 const char*Host::property(const char*key) {
190 return this->pimpl_->getProperty(key);
192 void Host::setProperty(const char*key, const char *value){
193 simgrid::simix::kernelImmediate([this, key, value] {
194 this->pimpl_->setProperty(key, value);
198 /** Get the processes attached to the host */
199 xbt_swag_t Host::processes()
201 return simgrid::simix::kernelImmediate([this] {
202 return this->extension<simgrid::simix::Host>()->process_list;
206 /** Get the peak power of a host */
207 double Host::getPstateSpeedCurrent()
209 return simgrid::simix::kernelImmediate([this] {
210 return this->pimpl_cpu->getPstateSpeedCurrent();
214 /** Get one power peak (in flops/s) of a host at a given pstate */
215 double Host::getPstateSpeed(int pstate_index)
217 return simgrid::simix::kernelImmediate([this, pstate_index] {
218 return this->pimpl_cpu->getPstateSpeed(pstate_index);
222 /** @brief Get the speed of the cpu associated to a host */
223 double Host::speed() {
224 return pimpl_cpu->getSpeed(1.0);
226 /** @brief Returns the number of core of the processor. */
227 int Host::coreCount() {
228 return pimpl_cpu->coreCount();
231 /** @brief Set the pstate at which the host should run */
232 void Host::setPstate(int pstate_index)
234 simgrid::simix::kernelImmediate([this, pstate_index] {
235 this->pimpl_cpu->setPState(pstate_index);
238 /** @brief Retrieve the pstate at which the host is currently running */
241 return this->pimpl_cpu->getPState();
245 * \ingroup simix_storage_management
246 * \brief Returns the list of storages mounted on an host.
247 * \return a dict containing all storages mounted on the host
249 xbt_dict_t Host::mountedStoragesAsDict()
251 return simgrid::simix::kernelImmediate([this] {
252 return this->pimpl_->getMountedStorageList();
257 * \ingroup simix_storage_management
258 * \brief Returns the list of storages attached to an host.
259 * \return a dict containing all storages attached to the host
261 xbt_dynar_t Host::attachedStorages()
263 return simgrid::simix::kernelImmediate([this] {
264 return this->pimpl_->getAttachedStorageList();
268 } // namespace simgrid