1 /* s4u::Engine Simulation Engine and global functions. */
3 /* Copyright (c) 2006-2022. 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>
12 #define SIMIX_H_NO_DEPRECATED_WARNING // avoid deprecation warning on include (remove with XBT_ATTRIB_DEPRECATED_v333)
13 #include <simgrid/simix.h>
16 #include "src/instr/instr_private.hpp"
17 #include "src/kernel/EngineImpl.hpp"
18 #include "src/mc/mc_replay.hpp"
19 #include "xbt/config.hpp"
24 XBT_LOG_NEW_CATEGORY(s4u, "Log channels of the S4U (Simgrid for you) interface");
25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_engine, s4u, "Logging specific to S4U (engine)");
27 static simgrid::kernel::actor::ActorCode maestro_code;
31 xbt::signal<void()> Engine::on_platform_creation;
32 xbt::signal<void()> Engine::on_platform_created;
33 xbt::signal<void()> Engine::on_simulation_start;
34 xbt::signal<void()> Engine::on_simulation_end;
35 xbt::signal<void(double)> Engine::on_time_advance;
36 xbt::signal<void(void)> Engine::on_deadlock;
38 Engine* Engine::instance_ = nullptr; /* This singleton is awful, but I don't see no other solution right now. */
40 void Engine::initialize(int* argc, char** argv)
42 xbt_assert(Engine::instance_ == nullptr, "It is currently forbidden to create more than one instance of s4u::Engine");
43 Engine::instance_ = this;
45 pimpl->initialize(argc, argv);
46 // Either create a new context with maestro or create
47 // a context object with the current context maestro):
48 kernel::actor::create_maestro(maestro_code);
51 Engine::Engine(std::string name) : pimpl(new kernel::EngineImpl())
54 char* argv = &name[0];
55 initialize(&argc, &argv);
58 Engine::Engine(int* argc, char** argv) : pimpl(new kernel::EngineImpl())
60 initialize(argc, argv);
65 kernel::EngineImpl::shutdown();
66 Engine::instance_ = nullptr;
69 /** @brief Retrieve the engine singleton */
70 Engine* Engine::get_instance()
74 return get_instance(&argc, &argv);
76 Engine* Engine::get_instance(int* argc, char** argv)
78 if (Engine::instance_ == nullptr) {
79 auto e = new Engine(argc, argv);
80 xbt_assert(Engine::instance_ == e);
82 return Engine::instance_;
85 void Engine::shutdown() // XBT_ATTRIB_DEPRECATED_v335
87 delete Engine::instance_;
90 double Engine::get_clock()
92 if (MC_is_active() || MC_record_replay_is_active()) {
93 return MC_process_clock_get(kernel::actor::ActorImpl::self());
95 return kernel::EngineImpl::get_clock();
99 void Engine::add_model(std::shared_ptr<kernel::resource::Model> model,
100 const std::vector<kernel::resource::Model*>& dependencies)
102 kernel::actor::simcall_answered([this, &model, &dependencies] { pimpl->add_model(std::move(model), dependencies); });
105 const std::vector<simgrid::kernel::resource::Model*>& Engine::get_all_models() const
107 return pimpl->get_all_models();
111 * Creates a new platform, including hosts, links, and the routing table.
114 * See also: :ref:`platform`.
117 void Engine::load_platform(const std::string& platf) const
119 pimpl->load_platform(platf);
123 * @brief Seals the platform, finishing the creation of its resources.
125 * This method is optional. The seal() is done automatically when you call Engine::run.
127 void Engine::seal_platform() const
129 pimpl->seal_platform();
132 /** Registers the main function of an actor that will be launched from the deployment file */
133 void Engine::register_function(const std::string& name, const std::function<void(int, char**)>& code)
135 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
136 return xbt::wrap_main(code, std::move(args));
138 register_function(name, code_factory);
141 /** Registers the main function of an actor that will be launched from the deployment file */
142 void Engine::register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code)
144 kernel::actor::ActorCodeFactory code_factory = [code{code}](std::vector<std::string> args) mutable {
145 return std::bind(std::move(code), std::move(args));
147 register_function(name, code_factory);
149 /** Registers a function as the default main function of actors
151 * It will be used as fallback when the function requested from the deployment file was not registered.
152 * It is used for trace-based simulations (see examples/cpp/replay-comms and similar).
154 void Engine::register_default(const std::function<void(int, char**)>& code)
156 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
158 void Engine::register_default(const kernel::actor::ActorCodeFactory& code)
160 simgrid::kernel::actor::simcall_answered([this, &code]() { pimpl->register_default(code); });
163 void Engine::register_function(const std::string& name, const kernel::actor::ActorCodeFactory& code)
165 simgrid::kernel::actor::simcall_answered([this, name, &code]() { pimpl->register_function(name, code); });
168 /** Load a deployment file and launch the actors that it contains
171 * See also: :ref:`deploy`.
174 void Engine::load_deployment(const std::string& deploy) const
176 pimpl->load_deployment(deploy);
179 /** Returns the amount of hosts in the platform */
180 size_t Engine::get_host_count() const
182 return pimpl->hosts_.size();
185 std::vector<Host*> Engine::get_all_hosts() const
187 std::vector<Host*> res;
188 for (auto const& kv : pimpl->hosts_)
189 res.push_back(kv.second);
193 std::vector<Host*> Engine::get_filtered_hosts(const std::function<bool(Host*)>& filter) const
195 std::vector<Host*> hosts;
196 for (auto const& kv : pimpl->hosts_) {
197 if (filter(kv.second))
198 hosts.push_back(kv.second);
204 void Engine::host_register(const std::string& name, Host* host)
206 pimpl->hosts_[name] = host;
209 void Engine::host_unregister(const std::string& name)
211 pimpl->hosts_.erase(name);
214 /** @brief Find a host from its name.
216 * @throw std::invalid_argument if the searched host does not exist.
218 Host* Engine::host_by_name(const std::string& name) const
220 auto host = pimpl->hosts_.find(name);
221 if (host == pimpl->hosts_.end())
222 throw std::invalid_argument(std::string("Host not found: '") + name + std::string("'"));
226 /** @brief Find a host from its name (or nullptr if that host does not exist) */
227 Host* Engine::host_by_name_or_null(const std::string& name) const
229 auto host = pimpl->hosts_.find(name);
230 return host == pimpl->hosts_.end() ? nullptr : host->second;
233 /** @brief Find a link from its name.
235 * @throw std::invalid_argument if the searched link does not exist.
237 Link* Engine::link_by_name(const std::string& name) const
239 auto link = pimpl->links_.find(name);
240 if (link == pimpl->links_.end())
241 throw std::invalid_argument(std::string("Link not found: ") + name);
242 return link->second->get_iface();
245 SplitDuplexLink* Engine::split_duplex_link_by_name(const std::string& name) const
247 auto link = pimpl->split_duplex_links_.find(name);
248 if (link == pimpl->split_duplex_links_.end())
249 throw std::invalid_argument(std::string("Link not found: ") + name);
250 return link->second->get_iface();
253 /** @brief Find a link from its name (or nullptr if that link does not exist) */
254 Link* Engine::link_by_name_or_null(const std::string& name) const
256 auto link = pimpl->links_.find(name);
257 return link == pimpl->links_.end() ? nullptr : link->second->get_iface();
260 /** @brief Find a mailox from its name or create one if it does not exist) */
261 Mailbox* Engine::mailbox_by_name_or_create(const std::string& name) const
263 /* two actors may have pushed the same mbox_create simcall at the same time */
264 kernel::activity::MailboxImpl* mbox = kernel::actor::simcall_answered([&name, this] {
265 auto m = pimpl->mailboxes_.emplace(name, nullptr);
267 m.first->second = new kernel::activity::MailboxImpl(name);
268 XBT_DEBUG("Creating a mailbox at %p with name %s", m.first->second, name.c_str());
270 return m.first->second;
272 return mbox->get_iface();
275 void Engine::link_register(const std::string& name, const Link* link)
277 pimpl->links_[name] = link->get_impl();
280 void Engine::link_unregister(const std::string& name)
282 pimpl->links_.erase(name);
285 /** @brief Returns the amount of links in the platform */
286 size_t Engine::get_link_count() const
288 return pimpl->links_.size();
291 /** @brief Returns the list of all links found in the platform */
292 std::vector<Link*> Engine::get_all_links() const
294 std::vector<Link*> res;
295 for (auto const& kv : pimpl->links_)
296 res.push_back(kv.second->get_iface());
300 std::vector<Link*> Engine::get_filtered_links(const std::function<bool(Link*)>& filter) const
302 std::vector<Link*> filtered_list;
303 for (auto const& kv : pimpl->links_) {
304 Link* l = kv.second->get_iface();
306 filtered_list.push_back(l);
308 return filtered_list;
311 size_t Engine::get_actor_count() const
313 return pimpl->get_actor_count();
316 std::vector<ActorPtr> Engine::get_all_actors() const
318 std::vector<ActorPtr> actor_list;
319 for (auto const& kv : pimpl->get_actor_list()) {
320 actor_list.push_back(kv.second->get_iface());
325 std::vector<ActorPtr> Engine::get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const
327 std::vector<ActorPtr> actor_list;
328 for (auto const& kv : pimpl->get_actor_list()) {
329 if (filter(kv.second->get_iface()))
330 actor_list.push_back(kv.second->get_iface());
335 void Engine::run() const
339 void Engine::run_until(double max_date) const
341 static bool callback_called = false;
342 if (not callback_called) {
343 on_simulation_start();
344 callback_called = true;
346 /* Clean IO before the run */
350 pimpl->run(max_date);
353 void Engine::track_vetoed_activities(std::set<Activity*>* vetoed_activities) const
355 Activity::set_vetoed_activities(vetoed_activities);
358 /** @brief Retrieve the root netzone, containing all others */
359 s4u::NetZone* Engine::get_netzone_root() const
361 if (pimpl->netzone_root_)
362 return pimpl->netzone_root_->get_iface();
365 /** @brief Set the root netzone, containing all others. Once set, it cannot be changed. */
366 void Engine::set_netzone_root(const s4u::NetZone* netzone)
368 xbt_assert(pimpl->netzone_root_ == nullptr, "The root NetZone cannot be changed once set");
369 pimpl->netzone_root_ = netzone->get_impl();
372 static NetZone* netzone_by_name_recursive(NetZone* current, const std::string& name)
374 if (current->get_name() == name)
377 for (auto const& elem : current->get_children()) {
378 NetZone* tmp = netzone_by_name_recursive(elem, name);
379 if (tmp != nullptr) {
386 /** @brief Retrieve the NetZone of the given name (or nullptr if not found) */
387 NetZone* Engine::netzone_by_name_or_null(const std::string& name) const
389 return netzone_by_name_recursive(get_netzone_root(), name);
392 /** @brief Retrieve the netpoint of the given name (or nullptr if not found) */
393 kernel::routing::NetPoint* Engine::netpoint_by_name_or_null(const std::string& name) const
395 auto netp = pimpl->netpoints_.find(name);
396 return netp == pimpl->netpoints_.end() ? nullptr : netp->second;
399 kernel::routing::NetPoint* Engine::netpoint_by_name(const std::string& name) const
401 auto netp = netpoint_by_name_or_null(name);
402 if (netp == nullptr) {
403 throw std::invalid_argument(std::string("Netpoint not found: %s") + name);
408 std::vector<kernel::routing::NetPoint*> Engine::get_all_netpoints() const
410 std::vector<kernel::routing::NetPoint*> res;
411 for (auto const& kv : pimpl->netpoints_)
412 res.push_back(kv.second);
416 /** @brief Register a new netpoint to the system */
417 void Engine::netpoint_register(kernel::routing::NetPoint* point)
419 simgrid::kernel::actor::simcall_answered([this, point] { pimpl->netpoints_[point->get_name()] = point; });
422 /** @brief Unregister a given netpoint */
423 void Engine::netpoint_unregister(kernel::routing::NetPoint* point)
425 kernel::actor::simcall_answered([this, point] {
426 pimpl->netpoints_.erase(point->get_name());
431 bool Engine::is_initialized()
433 return Engine::instance_ != nullptr;
435 void Engine::set_config(const std::string& str)
437 config::set_parse(str);
439 void Engine::set_config(const std::string& name, int value)
441 config::set_value(name.c_str(), value);
443 void Engine::set_config(const std::string& name, double value)
445 config::set_value(name.c_str(), value);
447 void Engine::set_config(const std::string& name, bool value)
449 config::set_value(name.c_str(), value);
451 void Engine::set_config(const std::string& name, const std::string& value)
453 config::set_value(name.c_str(), value);
456 Engine* Engine::set_default_comm_data_copy_callback(
457 const std::function<void(kernel::activity::CommImpl*, void*, size_t)>& callback)
459 kernel::activity::CommImpl::set_copy_data_callback(callback);
464 } // namespace simgrid
466 /* **************************** Public C interface *************************** */
467 void simgrid_init(int* argc, char** argv)
469 static simgrid::s4u::Engine e(argc, argv);
471 void simgrid_load_platform(const char* file)
473 simgrid::s4u::Engine::get_instance()->load_platform(file);
476 void simgrid_load_deployment(const char* file)
478 simgrid::s4u::Engine::get_instance()->load_deployment(file);
482 simgrid::s4u::Engine::get_instance()->run();
484 void simgrid_run_until(double max_date)
486 simgrid::s4u::Engine::get_instance()->run_until(max_date);
488 void simgrid_register_function(const char* name, void (*code)(int, char**))
490 simgrid::s4u::Engine::get_instance()->register_function(name, code);
492 void simgrid_register_default(void (*code)(int, char**))
494 simgrid::s4u::Engine::get_instance()->register_default(code);
496 double simgrid_get_clock()
498 return simgrid::s4u::Engine::get_clock();
501 void simgrid_set_maestro(void (*code)(void*), void* data)
504 XBT_WARN("simgrid_set_maestro is believed to not work on windows. Please help us investigating this issue if "
505 "you need that feature");
507 maestro_code = std::bind(code, data);
509 void SIMIX_set_maestro(void (*code)(void*), void* data) // XBT_ATTRIB_DEPRECATED_v333
511 simgrid_set_maestro(code, data);