1 /* s4u::Engine Simulation Engine and global functions. */
3 /* Copyright (c) 2006-2021. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include <simgrid/kernel/routing/NetPoint.hpp>
9 #include <simgrid/modelchecker.h>
10 #include <simgrid/s4u/Engine.hpp>
13 #include "src/instr/instr_private.hpp"
14 #include "src/kernel/EngineImpl.hpp"
15 #include "src/mc/mc_replay.hpp"
20 XBT_LOG_NEW_CATEGORY(s4u, "Log channels of the S4U (Simgrid for you) interface");
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_engine, s4u, "Logging specific to S4U (engine)");
23 static simgrid::kernel::actor::ActorCode maestro_code;
27 xbt::signal<void()> Engine::on_platform_creation;
28 xbt::signal<void()> Engine::on_platform_created;
29 xbt::signal<void()> Engine::on_simulation_end;
30 xbt::signal<void(double)> Engine::on_time_advance;
31 xbt::signal<void(void)> Engine::on_deadlock;
33 Engine* Engine::instance_ = nullptr; /* This singleton is awful, but I don't see no other solution right now. */
35 void Engine::initialize(int* argc, char** argv)
37 xbt_assert(Engine::instance_ == nullptr, "It is currently forbidden to create more than one instance of s4u::Engine");
38 Engine::instance_ = this;
40 pimpl->initialize(argc, argv);
41 // Either create a new context with maestro or create
42 // a context object with the current context maestro):
43 kernel::actor::create_maestro(maestro_code);
46 Engine::Engine(std::string name) : pimpl(new kernel::EngineImpl())
49 char* argv = &name[0];
50 initialize(&argc, &argv);
53 Engine::Engine(int* argc, char** argv) : pimpl(new kernel::EngineImpl())
55 initialize(argc, argv);
60 kernel::EngineImpl::shutdown();
61 Engine::instance_ = nullptr;
64 /** @brief Retrieve the engine singleton */
65 Engine* Engine::get_instance()
67 return get_instance(nullptr, nullptr);
69 Engine* Engine::get_instance(int* argc, char** argv)
71 if (Engine::instance_ == nullptr) {
72 auto e = new Engine(argc, argv);
73 xbt_assert(Engine::instance_ == e);
75 return Engine::instance_;
78 void Engine::shutdown()
80 delete Engine::instance_;
83 double Engine::get_clock()
85 if (MC_is_active() || MC_record_replay_is_active()) {
86 return MC_process_clock_get(kernel::actor::ActorImpl::self());
88 return kernel::EngineImpl::get_clock();
92 void Engine::add_model(std::shared_ptr<kernel::resource::Model> model,
93 const std::vector<kernel::resource::Model*>& dependencies)
95 kernel::actor::simcall([this, &model, &dependencies] { pimpl->add_model(std::move(model), dependencies); });
98 const std::vector<simgrid::kernel::resource::Model*>& Engine::get_all_models() const
100 return pimpl->get_all_models();
104 * Creates a new platform, including hosts, links, and the routing table.
107 * See also: :ref:`platform`.
110 void Engine::load_platform(const std::string& platf) const
112 pimpl->load_platform(platf);
116 * @brief Seals the platform, finishing the creation of its resources.
118 * This method is optional. The seal() is done automatically when you call Engine::run.
120 void Engine::seal_platform() const
122 pimpl->seal_platform();
125 /** Registers the main function of an actor that will be launched from the deployment file */
126 void Engine::register_function(const std::string& name, const std::function<void(int, char**)>& code)
128 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
129 return xbt::wrap_main(code, std::move(args));
131 register_function(name, code_factory);
134 /** Registers the main function of an actor that will be launched from the deployment file */
135 void Engine::register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code)
137 kernel::actor::ActorCodeFactory code_factory = [code{code}](std::vector<std::string> args) mutable {
138 return std::bind(std::move(code), std::move(args));
140 register_function(name, code_factory);
142 /** Registers a function as the default main function of actors
144 * It will be used as fallback when the function requested from the deployment file was not registered.
145 * It is used for trace-based simulations (see examples/cpp/replay-comms and similar).
147 void Engine::register_default(const std::function<void(int, char**)>& code)
149 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
151 void Engine::register_default(const kernel::actor::ActorCodeFactory& code)
153 simgrid::kernel::actor::simcall([this, &code]() { pimpl->register_default(code); });
156 void Engine::register_function(const std::string& name, const kernel::actor::ActorCodeFactory& code)
158 simgrid::kernel::actor::simcall([this, name, &code]() { pimpl->register_function(name, code); });
161 /** Load a deployment file and launch the actors that it contains
164 * See also: :ref:`deploy`.
167 void Engine::load_deployment(const std::string& deploy) const
169 pimpl->load_deployment(deploy);
172 /** Returns the amount of hosts in the platform */
173 size_t Engine::get_host_count() const
175 return pimpl->hosts_.size();
178 std::vector<Host*> Engine::get_all_hosts() const
180 std::vector<Host*> res;
181 for (auto const& kv : pimpl->hosts_)
182 res.push_back(kv.second);
186 std::vector<Host*> Engine::get_filtered_hosts(const std::function<bool(Host*)>& filter) const
188 std::vector<Host*> hosts;
189 for (auto const& kv : pimpl->hosts_) {
190 if (filter(kv.second))
191 hosts.push_back(kv.second);
197 void Engine::host_register(const std::string& name, Host* host)
199 pimpl->hosts_[name] = host;
202 void Engine::host_unregister(const std::string& name)
204 pimpl->hosts_.erase(name);
207 /** @brief Find a host from its name.
209 * @throw std::invalid_argument if the searched host does not exist.
211 Host* Engine::host_by_name(const std::string& name) const
213 auto host = pimpl->hosts_.find(name);
214 if (host == pimpl->hosts_.end())
215 throw std::invalid_argument(std::string("Host not found: '") + name + std::string("'"));
219 /** @brief Find a host from its name (or nullptr if that host does not exist) */
220 Host* Engine::host_by_name_or_null(const std::string& name) const
222 auto host = pimpl->hosts_.find(name);
223 return host == pimpl->hosts_.end() ? nullptr : host->second;
226 /** @brief Find a link from its name.
228 * @throw std::invalid_argument if the searched link does not exist.
230 Link* Engine::link_by_name(const std::string& name) const
232 auto link = pimpl->links_.find(name);
233 if (link == pimpl->links_.end())
234 throw std::invalid_argument(std::string("Link not found: ") + name);
235 return link->second->get_iface();
238 SplitDuplexLink* Engine::split_duplex_link_by_name(const std::string& name) const
240 auto link = pimpl->split_duplex_links_.find(name);
241 if (link == pimpl->split_duplex_links_.end())
242 throw std::invalid_argument(std::string("Link not found: ") + name);
243 return link->second->get_iface();
246 /** @brief Find a link from its name (or nullptr if that link does not exist) */
247 Link* Engine::link_by_name_or_null(const std::string& name) const
249 auto link = pimpl->links_.find(name);
250 return link == pimpl->links_.end() ? nullptr : link->second->get_iface();
253 /** @brief Find a mailox from its name or create one if it does not exist) */
254 Mailbox* Engine::mailbox_by_name_or_create(const std::string& name) const
256 /* two actors may have pushed the same mbox_create simcall at the same time */
257 kernel::activity::MailboxImpl* mbox = kernel::actor::simcall([&name, this] {
258 auto m = pimpl->mailboxes_.emplace(name, nullptr);
260 m.first->second = new kernel::activity::MailboxImpl(name);
261 XBT_DEBUG("Creating a mailbox at %p with name %s", m.first->second, name.c_str());
263 return m.first->second;
265 return mbox->get_iface();
268 void Engine::link_register(const std::string& name, const Link* link)
270 pimpl->links_[name] = link->get_impl();
273 void Engine::link_unregister(const std::string& name)
275 pimpl->links_.erase(name);
278 /** @brief Returns the amount of links in the platform */
279 size_t Engine::get_link_count() const
281 return pimpl->links_.size();
284 /** @brief Returns the list of all links found in the platform */
285 std::vector<Link*> Engine::get_all_links() const
287 std::vector<Link*> res;
288 for (auto const& kv : pimpl->links_)
289 res.push_back(kv.second->get_iface());
293 std::vector<Link*> Engine::get_filtered_links(const std::function<bool(Link*)>& filter) const
295 std::vector<Link*> filtered_list;
296 for (auto const& kv : pimpl->links_) {
297 Link* l = kv.second->get_iface();
299 filtered_list.push_back(l);
301 return filtered_list;
304 size_t Engine::get_actor_count() const
306 return pimpl->get_actor_count();
309 std::vector<ActorPtr> Engine::get_all_actors() const
311 std::vector<ActorPtr> actor_list;
312 for (auto const& kv : pimpl->get_actor_list()) {
313 actor_list.push_back(kv.second->get_iface());
318 std::vector<ActorPtr> Engine::get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const
320 std::vector<ActorPtr> actor_list;
321 for (auto const& kv : pimpl->get_actor_list()) {
322 if (filter(kv.second->get_iface()))
323 actor_list.push_back(kv.second->get_iface());
328 void Engine::run() const
332 void Engine::run_until(double max_date) const
334 /* Clean IO before the run */
338 if (MC_is_active()) {
341 pimpl->run(max_date);
345 void Engine::track_vetoed_activities(std::set<Activity*>* vetoed_activities) const
347 Activity::set_vetoed_activities(vetoed_activities);
350 /** @brief Retrieve the root netzone, containing all others */
351 s4u::NetZone* Engine::get_netzone_root() const
353 if (pimpl->netzone_root_)
354 return pimpl->netzone_root_->get_iface();
357 /** @brief Set the root netzone, containing all others. Once set, it cannot be changed. */
358 void Engine::set_netzone_root(const s4u::NetZone* netzone)
360 xbt_assert(pimpl->netzone_root_ == nullptr, "The root NetZone cannot be changed once set");
361 pimpl->netzone_root_ = netzone->get_impl();
364 static NetZone* netzone_by_name_recursive(NetZone* current, const std::string& name)
366 if (current->get_name() == name)
369 for (auto const& elem : current->get_children()) {
370 NetZone* tmp = netzone_by_name_recursive(elem, name);
371 if (tmp != nullptr) {
378 /** @brief Retrieve the NetZone of the given name (or nullptr if not found) */
379 NetZone* Engine::netzone_by_name_or_null(const std::string& name) const
381 return netzone_by_name_recursive(get_netzone_root(), name);
384 /** @brief Retrieve the netpoint of the given name (or nullptr if not found) */
385 kernel::routing::NetPoint* Engine::netpoint_by_name_or_null(const std::string& name) const
387 auto netp = pimpl->netpoints_.find(name);
388 return netp == pimpl->netpoints_.end() ? nullptr : netp->second;
391 kernel::routing::NetPoint* Engine::netpoint_by_name(const std::string& name) const
393 auto netp = netpoint_by_name_or_null(name);
394 if (netp == nullptr) {
395 throw std::invalid_argument(std::string("Netpoint not found: %s") + name);
400 std::vector<kernel::routing::NetPoint*> Engine::get_all_netpoints() const
402 std::vector<kernel::routing::NetPoint*> res;
403 for (auto const& kv : pimpl->netpoints_)
404 res.push_back(kv.second);
408 /** @brief Register a new netpoint to the system */
409 void Engine::netpoint_register(kernel::routing::NetPoint* point)
411 simgrid::kernel::actor::simcall([this, point] { pimpl->netpoints_[point->get_name()] = point; });
414 /** @brief Unregister a given netpoint */
415 void Engine::netpoint_unregister(kernel::routing::NetPoint* point)
417 kernel::actor::simcall([this, point] {
418 pimpl->netpoints_.erase(point->get_name());
423 bool Engine::is_initialized()
425 return Engine::instance_ != nullptr;
427 void Engine::set_config(const std::string& str)
429 config::set_parse(str);
431 void Engine::set_config(const std::string& name, int value)
433 config::set_value(name.c_str(), value);
435 void Engine::set_config(const std::string& name, double value)
437 config::set_value(name.c_str(), value);
439 void Engine::set_config(const std::string& name, bool value)
441 config::set_value(name.c_str(), value);
443 void Engine::set_config(const std::string& name, const std::string& value)
445 config::set_value(name.c_str(), value);
448 Engine* Engine::set_default_comm_data_copy_callback(void (*callback)(kernel::activity::CommImpl*, void*, size_t))
450 kernel::activity::CommImpl::set_copy_data_callback(callback);
455 } // namespace simgrid
457 double SIMIX_get_clock() // XBT_ATTRIB_DEPRECATED_v332
459 return simgrid::s4u::Engine::get_clock();
462 /* **************************** Public C interface *************************** */
463 void simgrid_init(int* argc, char** argv)
465 static simgrid::s4u::Engine e(argc, argv);
467 void simgrid_load_platform(const char* file)
469 simgrid::s4u::Engine::get_instance()->load_platform(file);
472 void simgrid_load_deployment(const char* file)
474 simgrid::s4u::Engine::get_instance()->load_deployment(file);
478 simgrid::s4u::Engine::get_instance()->run();
480 void simgrid_run_until(double max_date)
482 simgrid::s4u::Engine::get_instance()->run_until(max_date);
484 void simgrid_register_function(const char* name, void (*code)(int, char**))
486 simgrid::s4u::Engine::get_instance()->register_function(name, code);
488 void simgrid_register_default(void (*code)(int, char**))
490 simgrid::s4u::Engine::get_instance()->register_default(code);
492 double simgrid_get_clock()
494 return simgrid::s4u::Engine::get_clock();
497 void simgrid_set_maestro(void (*code)(void*), void* data)
500 XBT_WARN("simgrid_set_maestro is believed to not work on windows. Please help us investigating this issue if "
501 "you need that feature");
503 maestro_code = std::bind(code, data);
505 void SIMIX_set_maestro(void (*code)(void*), void* data) // XBT_ATTRIB_DEPRECATED_v333
507 simgrid_set_maestro(code, data);