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/Exception.hpp>
9 #include <simgrid/kernel/routing/NetPoint.hpp>
10 #include <simgrid/kernel/routing/NetZoneImpl.hpp>
11 #include <simgrid/s4u/Disk.hpp>
12 #include <simgrid/s4u/Engine.hpp>
13 #include <simgrid/s4u/Host.hpp>
14 #include <simgrid/s4u/Mailbox.hpp>
15 #include <simgrid/s4u/NetZone.hpp>
16 #include <simgrid/simix.h>
19 #include "src/instr/instr_private.hpp"
20 #include "src/kernel/EngineImpl.hpp"
21 #include "src/kernel/activity/CommImpl.hpp"
22 #include "src/kernel/actor/ActorImpl.hpp"
23 #include "src/mc/mc_replay.hpp"
24 #include "src/surf/network_interface.hpp"
25 #include "surf/surf.hpp"
30 XBT_LOG_NEW_CATEGORY(s4u, "Log channels of the S4U (Simgrid for you) interface");
31 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_engine, s4u, "Logging specific to S4U (engine)");
33 static simgrid::kernel::actor::ActorCode maestro_code;
37 xbt::signal<void()> Engine::on_platform_creation;
38 xbt::signal<void()> Engine::on_platform_created;
39 xbt::signal<void()> Engine::on_simulation_end;
40 xbt::signal<void(double)> Engine::on_time_advance;
41 xbt::signal<void(void)> Engine::on_deadlock;
43 Engine* Engine::instance_ = nullptr; /* This singleton is awful, but I don't see no other solution right now. */
45 void Engine::initialize(int* argc, char** argv)
47 xbt_assert(Engine::instance_ == nullptr, "It is currently forbidden to create more than one instance of s4u::Engine");
48 Engine::instance_ = this;
50 pimpl->initialize(argc, argv);
51 // Either create a new context with maestro or create
52 // a context object with the current context maestro):
53 kernel::actor::create_maestro(maestro_code);
56 Engine::Engine(std::string name) : pimpl(new kernel::EngineImpl())
59 char* argv = &name[0];
60 initialize(&argc, &argv);
63 Engine::Engine(int* argc, char** argv) : pimpl(new kernel::EngineImpl())
65 initialize(argc, argv);
70 kernel::EngineImpl::shutdown();
71 Engine::instance_ = nullptr;
74 /** @brief Retrieve the engine singleton */
75 Engine* Engine::get_instance()
77 return get_instance(nullptr, nullptr);
79 Engine* Engine::get_instance(int* argc, char** argv)
81 if (Engine::instance_ == nullptr) {
82 auto e = new Engine(argc, argv);
83 xbt_assert(Engine::instance_ == e);
85 return Engine::instance_;
88 void Engine::shutdown()
90 delete Engine::instance_;
93 double Engine::get_clock()
95 if (MC_is_active() || MC_record_replay_is_active()) {
96 return MC_process_clock_get(kernel::actor::ActorImpl::self());
98 return surf_get_clock();
102 void Engine::add_model(std::shared_ptr<kernel::resource::Model> model,
103 const std::vector<kernel::resource::Model*>& dependencies)
105 kernel::actor::simcall([this, &model, &dependencies] { pimpl->add_model(std::move(model), dependencies); });
108 const std::vector<simgrid::kernel::resource::Model*>& Engine::get_all_models() const
110 return pimpl->get_all_models();
114 * Creates a new platform, including hosts, links, and the routing table.
117 * See also: :ref:`platform`.
120 void Engine::load_platform(const std::string& platf) const
122 pimpl->load_platform(platf);
125 void Engine::register_function(const std::string& name, int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v330
127 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
128 return xbt::wrap_main(code, std::move(args));
130 register_function(name, code_factory);
132 void Engine::register_default(int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v330
134 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
137 /** Registers the main function of an actor that will be launched from the deployment file */
138 void Engine::register_function(const std::string& name, const std::function<void(int, char**)>& code)
140 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
141 return xbt::wrap_main(code, std::move(args));
143 register_function(name, code_factory);
146 /** Registers the main function of an actor that will be launched from the deployment file */
147 void Engine::register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code)
149 kernel::actor::ActorCodeFactory code_factory = [code{code}](std::vector<std::string> args) mutable {
150 return std::bind(std::move(code), std::move(args));
152 register_function(name, code_factory);
154 /** Registers a function as the default main function of actors
156 * It will be used as fallback when the function requested from the deployment file was not registered.
157 * It is used for trace-based simulations (see examples/cpp/replay-comms and similar).
159 void Engine::register_default(const std::function<void(int, char**)>& code)
161 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
163 void Engine::register_default(const kernel::actor::ActorCodeFactory& code)
165 simgrid::kernel::actor::simcall([this, &code]() { pimpl->register_default(code); });
168 void Engine::register_function(const std::string& name, const kernel::actor::ActorCodeFactory& code)
170 simgrid::kernel::actor::simcall([this, name, &code]() { pimpl->register_function(name, code); });
173 /** Load a deployment file and launch the actors that it contains
176 * See also: :ref:`deploy`.
179 void Engine::load_deployment(const std::string& deploy) const
181 pimpl->load_deployment(deploy);
184 /** Returns the amount of hosts in the platform */
185 size_t Engine::get_host_count() const
187 return pimpl->hosts_.size();
190 std::vector<Host*> Engine::get_all_hosts() const
192 std::vector<Host*> res;
193 for (auto const& kv : pimpl->hosts_)
194 res.push_back(kv.second);
198 std::vector<Host*> Engine::get_filtered_hosts(const std::function<bool(Host*)>& filter) const
200 std::vector<Host*> hosts;
201 for (auto const& kv : pimpl->hosts_) {
202 if (filter(kv.second))
203 hosts.push_back(kv.second);
209 void Engine::host_register(const std::string& name, Host* host)
211 pimpl->hosts_[name] = host;
214 void Engine::host_unregister(const std::string& name)
216 pimpl->hosts_.erase(name);
219 /** @brief Find a host from its name.
221 * @throw std::invalid_argument if the searched host does not exist.
223 Host* Engine::host_by_name(const std::string& name) const
225 auto host = pimpl->hosts_.find(name);
226 if (host == pimpl->hosts_.end())
227 throw std::invalid_argument(std::string("Host not found: '") + name + std::string("'"));
231 /** @brief Find a host from its name (or nullptr if that host does not exist) */
232 Host* Engine::host_by_name_or_null(const std::string& name) const
234 auto host = pimpl->hosts_.find(name);
235 return host == pimpl->hosts_.end() ? nullptr : host->second;
238 /** @brief Find a link from its name.
240 * @throw std::invalid_argument if the searched link does not exist.
242 Link* Engine::link_by_name(const std::string& name) const
244 auto link = pimpl->links_.find(name);
245 if (link == pimpl->links_.end())
246 throw std::invalid_argument(std::string("Link not found: ") + name);
247 return link->second->get_iface();
250 SplitDuplexLink* Engine::split_duplex_link_by_name(const std::string& name) const
252 auto link = pimpl->split_duplex_links_.find(name);
253 if (link == pimpl->split_duplex_links_.end())
254 throw std::invalid_argument(std::string("Link not found: ") + name);
255 return link->second->get_iface();
258 /** @brief Find a link from its name (or nullptr if that link does not exist) */
259 Link* Engine::link_by_name_or_null(const std::string& name) const
261 auto link = pimpl->links_.find(name);
262 return link == pimpl->links_.end() ? nullptr : link->second->get_iface();
265 /** @brief Find a mailox from its name or create one if it does not exist) */
266 Mailbox* Engine::mailbox_by_name_or_create(const std::string& name) const
268 /* two actors may have pushed the same mbox_create simcall at the same time */
269 kernel::activity::MailboxImpl* mbox = kernel::actor::simcall([&name, this] {
270 auto m = pimpl->mailboxes_.emplace(name, nullptr);
272 m.first->second = new kernel::activity::MailboxImpl(name);
273 XBT_DEBUG("Creating a mailbox at %p with name %s", m.first->second, name.c_str());
275 return m.first->second;
277 return mbox->get_iface();
280 void Engine::link_register(const std::string& name, const Link* link)
282 pimpl->links_[name] = link->get_impl();
285 void Engine::link_unregister(const std::string& name)
287 pimpl->links_.erase(name);
290 /** @brief Returns the amount of links in the platform */
291 size_t Engine::get_link_count() const
293 return pimpl->links_.size();
296 /** @brief Returns the list of all links found in the platform */
297 std::vector<Link*> Engine::get_all_links() const
299 std::vector<Link*> res;
300 for (auto const& kv : pimpl->links_)
301 res.push_back(kv.second->get_iface());
305 std::vector<Link*> Engine::get_filtered_links(const std::function<bool(Link*)>& filter) const
307 std::vector<Link*> filtered_list;
308 for (auto const& kv : pimpl->links_) {
309 Link* l = kv.second->get_iface();
311 filtered_list.push_back(l);
313 return filtered_list;
316 size_t Engine::get_actor_count() const
318 return pimpl->get_actor_count();
321 std::vector<ActorPtr> Engine::get_all_actors() const
323 std::vector<ActorPtr> actor_list;
324 for (auto const& kv : pimpl->get_actor_list()) {
325 actor_list.push_back(kv.second->get_iface());
330 std::vector<ActorPtr> Engine::get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const
332 std::vector<ActorPtr> actor_list;
333 for (auto const& kv : pimpl->get_actor_list()) {
334 if (filter(kv.second->get_iface()))
335 actor_list.push_back(kv.second->get_iface());
340 void Engine::run() const
342 /* sealing resources before run: links */
343 for (auto* link : get_all_links())
345 /* seal netzone root, recursively seal children netzones, hosts and disks */
346 get_netzone_root()->seal();
348 /* Clean IO before the run */
352 if (MC_is_active()) {
359 /** @brief Retrieve the root netzone, containing all others */
360 s4u::NetZone* Engine::get_netzone_root() const
362 if (pimpl->netzone_root_)
363 return pimpl->netzone_root_->get_iface();
366 /** @brief Set the root netzone, containing all others. Once set, it cannot be changed. */
367 void Engine::set_netzone_root(const s4u::NetZone* netzone)
369 xbt_assert(pimpl->netzone_root_ == nullptr, "The root NetZone cannot be changed once set");
370 pimpl->netzone_root_ = netzone->get_impl();
373 static NetZone* netzone_by_name_recursive(NetZone* current, const std::string& name)
375 if (current->get_name() == name)
378 for (auto const& elem : current->get_children()) {
379 NetZone* tmp = netzone_by_name_recursive(elem, name);
380 if (tmp != nullptr) {
387 /** @brief Retrieve the NetZone of the given name (or nullptr if not found) */
388 NetZone* Engine::netzone_by_name_or_null(const std::string& name) const
390 return netzone_by_name_recursive(get_netzone_root(), name);
393 /** @brief Retrieve the netpoint of the given name (or nullptr if not found) */
394 kernel::routing::NetPoint* Engine::netpoint_by_name_or_null(const std::string& name) const
396 auto netp = pimpl->netpoints_.find(name);
397 return netp == pimpl->netpoints_.end() ? nullptr : netp->second;
400 kernel::routing::NetPoint* Engine::netpoint_by_name(const std::string& name) const
402 auto netp = netpoint_by_name_or_null(name);
403 if (netp == nullptr) {
404 throw std::invalid_argument(std::string("Netpoint not found: %s") + name);
409 std::vector<kernel::routing::NetPoint*> Engine::get_all_netpoints() const
411 std::vector<kernel::routing::NetPoint*> res;
412 for (auto const& kv : pimpl->netpoints_)
413 res.push_back(kv.second);
417 /** @brief Register a new netpoint to the system */
418 void Engine::netpoint_register(kernel::routing::NetPoint* point)
420 simgrid::kernel::actor::simcall([this, point] { pimpl->netpoints_[point->get_name()] = point; });
423 /** @brief Unregister a given netpoint */
424 void Engine::netpoint_unregister(kernel::routing::NetPoint* point)
426 kernel::actor::simcall([this, point] {
427 pimpl->netpoints_.erase(point->get_name());
432 bool Engine::is_initialized()
434 return Engine::instance_ != nullptr;
436 void Engine::set_config(const std::string& str)
438 config::set_parse(str);
440 void Engine::set_config(const std::string& name, int value)
442 config::set_value(name.c_str(), value);
444 void Engine::set_config(const std::string& name, double value)
446 config::set_value(name.c_str(), value);
448 void Engine::set_config(const std::string& name, bool value)
450 config::set_value(name.c_str(), value);
452 void Engine::set_config(const std::string& name, const std::string& value)
454 config::set_value(name.c_str(), value);
457 Engine* Engine::set_default_comm_data_copy_callback(void (*callback)(kernel::activity::CommImpl*, void*, size_t))
459 kernel::activity::CommImpl::set_copy_data_callback(callback);
463 } // namespace simgrid
465 double SIMIX_get_clock() // XBT_ATTRIB_DEPRECATED_v332
467 return simgrid::s4u::Engine::get_clock();
470 /* **************************** Public C interface *************************** */
471 void simgrid_init(int* argc, char** argv)
473 static simgrid::s4u::Engine e(argc, argv);
475 void simgrid_load_platform(const char* file)
477 simgrid::s4u::Engine::get_instance()->load_platform(file);
480 void simgrid_load_deployment(const char* file)
482 simgrid::s4u::Engine::get_instance()->load_deployment(file);
486 simgrid::s4u::Engine::get_instance()->run();
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 int simgrid_get_actor_count() // XBT_ATTRIB_DEPRECATED_v330
503 return simgrid::s4u::Engine::get_instance()->get_actor_count();
506 void simgrid_set_maestro(void (*code)(void*), void* data)
509 XBT_WARN("simgrid_set_maestro is believed to not work on windows. Please help us investigating this issue if "
510 "you need that feature");
512 maestro_code = std::bind(code, data);
514 void SIMIX_set_maestro(void (*code)(void*), void* data) // XBT_ATTRIB_DEPRECATED_v333
516 simgrid_set_maestro(code, data);