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. */
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"
17 #include "src/instr/instr_private.hpp"
18 #include "src/kernel/EngineImpl.hpp"
19 #include "src/simix/smx_private.hpp" // For access to simix_global->process_list
20 #include "src/surf/network_interface.hpp"
21 #include "surf/surf.hpp" // routing_platf. FIXME:KILLME. SOON
22 #include <simgrid/Exception.hpp>
27 XBT_LOG_NEW_CATEGORY(s4u, "Log channels of the S4U (Simgrid for you) interface");
28 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_engine, s4u, "Logging specific to S4U (engine)");
32 xbt::signal<void()> Engine::on_platform_creation;
33 xbt::signal<void()> Engine::on_platform_created;
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; /* That singleton is awful, but I don't see no other solution right now. */
40 Engine::Engine(int* argc, char** argv) : pimpl(new kernel::EngineImpl())
42 xbt_assert(Engine::instance_ == nullptr, "It is currently forbidden to create more than one instance of s4u::Engine");
44 SIMIX_global_init(argc, argv);
46 Engine::instance_ = this;
52 Engine::instance_ = nullptr;
55 /** @brief Retrieve the engine singleton */
56 Engine* Engine::get_instance()
58 if (Engine::instance_ == nullptr) {
59 auto e = new Engine(nullptr, nullptr);
60 xbt_assert(Engine::instance_ == e);
62 return Engine::instance_;
65 void Engine::shutdown()
67 delete Engine::instance_;
68 Engine::instance_ = nullptr;
71 double Engine::get_clock()
73 return SIMIX_get_clock();
76 void Engine::add_model(simgrid::kernel::resource::Model::Type type,
77 std::shared_ptr<simgrid::kernel::resource::Model> model)
79 simgrid::kernel::actor::simcall([this, type, &model] { pimpl->add_model(type, std::move(model)); });
82 * Creates a new platform, including hosts, links, and the routing table.
85 * See also: :ref:`platform`.
88 void Engine::load_platform(const std::string& platf) const
90 double start = xbt_os_time();
91 parse_platform_file(platf);
93 double end = xbt_os_time();
94 XBT_DEBUG("PARSE TIME: %g", (end - start));
97 void Engine::register_function(const std::string& name, int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v329
99 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
100 return xbt::wrap_main(code, std::move(args));
102 register_function(name, code_factory);
104 void Engine::register_default(int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v329
106 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
109 /** Registers the main function of an actor that will be launched from the deployment file */
110 void Engine::register_function(const std::string& name, const std::function<void(int, char**)>& code)
112 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
113 return xbt::wrap_main(code, std::move(args));
115 register_function(name, code_factory);
118 /** Registers the main function of an actor that will be launched from the deployment file */
119 void Engine::register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code)
121 kernel::actor::ActorCodeFactory code_factory = [code{code}](std::vector<std::string> args) mutable {
122 return std::bind(std::move(code), std::move(args));
124 register_function(name, code_factory);
126 /** Registers a function as the default main function of actors
128 * It will be used as fallback when the function requested from the deployment file was not registered.
129 * It is used for trace-based simulations (see examples/cpp/replay-comms and similar).
131 void Engine::register_default(const std::function<void(int, char**)>& code)
133 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
135 void Engine::register_default(const kernel::actor::ActorCodeFactory& code)
137 simgrid::kernel::actor::simcall([this, &code]() { pimpl->register_default(code); });
140 void Engine::register_function(const std::string& name, const kernel::actor::ActorCodeFactory& code)
142 simgrid::kernel::actor::simcall([this, name, &code]() { pimpl->register_function(name, code); });
145 /** Load a deployment file and launch the actors that it contains
148 * See also: :ref:`deploy`.
151 void Engine::load_deployment(const std::string& deploy) const
153 pimpl->load_deployment(deploy);
156 /** Returns the amount of hosts in the platform */
157 size_t Engine::get_host_count() const
159 return pimpl->hosts_.size();
162 std::vector<Host*> Engine::get_all_hosts() const
164 std::vector<Host*> res;
165 for (auto const& kv : pimpl->hosts_)
166 res.push_back(kv.second);
170 std::vector<Host*> Engine::get_filtered_hosts(const std::function<bool(Host*)>& filter) const
172 std::vector<Host*> hosts;
173 for (auto const& kv : pimpl->hosts_) {
174 if (filter(kv.second))
175 hosts.push_back(kv.second);
181 void Engine::host_register(const std::string& name, Host* host)
183 pimpl->hosts_[name] = host;
186 void Engine::host_unregister(const std::string& name)
188 pimpl->hosts_.erase(name);
191 /** @brief Find a host from its name.
193 * @throw std::invalid_argument if the searched host does not exist.
195 Host* Engine::host_by_name(const std::string& name) const
197 auto host = pimpl->hosts_.find(name);
198 if (host == pimpl->hosts_.end())
199 throw std::invalid_argument(std::string("Host not found: '") + name + std::string("'"));
203 /** @brief Find a host from its name (or nullptr if that host does not exist) */
204 Host* Engine::host_by_name_or_null(const std::string& name) const
206 auto host = pimpl->hosts_.find(name);
207 return host == pimpl->hosts_.end() ? nullptr : host->second;
210 /** @brief Find a link from its name.
212 * @throw std::invalid_argument if the searched link does not exist.
214 Link* Engine::link_by_name(const std::string& name) const
216 auto link = pimpl->links_.find(name);
217 if (link == pimpl->links_.end())
218 throw std::invalid_argument(std::string("Link not found: ") + name);
219 return link->second->get_iface();
222 /** @brief Find a link from its name (or nullptr if that link does not exist) */
223 Link* Engine::link_by_name_or_null(const std::string& name) const
225 auto link = pimpl->links_.find(name);
226 return link == pimpl->links_.end() ? nullptr : link->second->get_iface();
229 void Engine::link_register(const std::string& name, const Link* link)
231 pimpl->links_[name] = link->get_impl();
234 void Engine::link_unregister(const std::string& name)
236 pimpl->links_.erase(name);
239 /** @brief Returns the amount of links in the platform */
240 size_t Engine::get_link_count() const
242 return pimpl->links_.size();
245 /** @brief Returns the list of all links found in the platform */
246 std::vector<Link*> Engine::get_all_links() const
248 std::vector<Link*> res;
249 for (auto const& kv : pimpl->links_)
250 res.push_back(kv.second->get_iface());
254 std::vector<Link*> Engine::get_filtered_links(const std::function<bool(Link*)>& filter) const
256 std::vector<Link*> filtered_list;
257 for (auto const& kv : pimpl->links_) {
258 Link* l = kv.second->get_iface();
260 filtered_list.push_back(l);
262 return filtered_list;
265 size_t Engine::get_actor_count() const
267 return simix_global->process_list.size();
270 std::vector<ActorPtr> Engine::get_all_actors() const
272 std::vector<ActorPtr> actor_list;
273 for (auto const& kv : simix_global->process_list) {
274 actor_list.push_back(kv.second->get_iface());
279 std::vector<ActorPtr> Engine::get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const
281 std::vector<ActorPtr> actor_list;
282 for (auto const& kv : simix_global->process_list) {
283 if (filter(kv.second->get_iface()))
284 actor_list.push_back(kv.second->get_iface());
289 void Engine::run() const
291 /* Clean IO before the run */
295 if (MC_is_active()) {
302 /** @brief Retrieve the root netzone, containing all others */
303 s4u::NetZone* Engine::get_netzone_root() const
305 return pimpl->netzone_root_->get_iface();
307 /** @brief Set the root netzone, containing all others. Once set, it cannot be changed. */
308 void Engine::set_netzone_root(const s4u::NetZone* netzone)
310 xbt_assert(pimpl->netzone_root_ == nullptr, "The root NetZone cannot be changed once set");
311 pimpl->netzone_root_ = netzone->get_impl();
314 static NetZone* netzone_by_name_recursive(NetZone* current, const std::string& name)
316 if (current->get_name() == name)
319 for (auto const& elem : current->get_children()) {
320 NetZone* tmp = netzone_by_name_recursive(elem, name);
321 if (tmp != nullptr) {
328 /** @brief Retrieve the NetZone of the given name (or nullptr if not found) */
329 NetZone* Engine::netzone_by_name_or_null(const std::string& name) const
331 return netzone_by_name_recursive(get_netzone_root(), name);
334 /** @brief Retrieve the netpoint of the given name (or nullptr if not found) */
335 kernel::routing::NetPoint* Engine::netpoint_by_name_or_null(const std::string& name) const
337 auto netp = pimpl->netpoints_.find(name);
338 return netp == pimpl->netpoints_.end() ? nullptr : netp->second;
341 std::vector<kernel::routing::NetPoint*> Engine::get_all_netpoints() const
343 std::vector<kernel::routing::NetPoint*> res;
344 for (auto const& kv : pimpl->netpoints_)
345 res.push_back(kv.second);
349 /** @brief Register a new netpoint to the system */
350 void Engine::netpoint_register(kernel::routing::NetPoint* point)
352 simgrid::kernel::actor::simcall([this, point] { pimpl->netpoints_[point->get_name()] = point; });
355 /** @brief Unregister a given netpoint */
356 void Engine::netpoint_unregister(kernel::routing::NetPoint* point)
358 kernel::actor::simcall([this, point] {
359 pimpl->netpoints_.erase(point->get_name());
364 bool Engine::is_initialized()
366 return Engine::instance_ != nullptr;
368 void Engine::set_config(const std::string& str)
370 config::set_parse(str);
372 void Engine::set_config(const std::string& name, int value)
374 config::set_value(name.c_str(), value);
376 void Engine::set_config(const std::string& name, double value)
378 config::set_value(name.c_str(), value);
380 void Engine::set_config(const std::string& name, bool value)
382 config::set_value(name.c_str(), value);
384 void Engine::set_config(const std::string& name, const std::string& value)
386 config::set_value(name.c_str(), value);
390 } // namespace simgrid
392 /* **************************** Public C interface *************************** */
393 void simgrid_init(int* argc, char** argv)
395 simgrid::s4u::Engine e(argc, argv);
397 void simgrid_load_platform(const char* file)
399 simgrid::s4u::Engine::get_instance()->load_platform(file);
402 void simgrid_load_deployment(const char* file)
404 simgrid::s4u::Engine::get_instance()->load_deployment(file);
408 simgrid::s4u::Engine::get_instance()->run();
410 void simgrid_register_function(const char* name, void (*code)(int, char**))
412 simgrid::s4u::Engine::get_instance()->register_function(name, code);
414 void simgrid_register_default(void (*code)(int, char**))
416 simgrid::s4u::Engine::get_instance()->register_default(code);
418 double simgrid_get_clock()
420 return simgrid::s4u::Engine::get_clock();
423 int simgrid_get_actor_count() // XBT_ATTRIB_DEPRECATED_v330
425 return simgrid::s4u::Engine::get_instance()->get_actor_count();