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/mc/mc_replay.hpp"
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 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 SIMIX_global_init(argc, argv);
48 Engine::Engine(std::string name) : pimpl(new kernel::EngineImpl())
51 char* argv = &name[0];
52 initialize(&argc, &argv);
55 Engine::Engine(int* argc, char** argv) : pimpl(new kernel::EngineImpl())
57 initialize(argc, argv);
63 Engine::instance_ = nullptr;
66 /** @brief Retrieve the engine singleton */
67 Engine* Engine::get_instance()
69 if (Engine::instance_ == nullptr) {
70 auto e = new Engine(nullptr, nullptr);
71 xbt_assert(Engine::instance_ == e);
73 return Engine::instance_;
76 void Engine::shutdown()
78 delete Engine::instance_;
79 Engine::instance_ = nullptr;
82 double Engine::get_clock()
84 if (MC_is_active() || MC_record_replay_is_active()) {
85 return MC_process_clock_get(SIMIX_process_self());
87 return surf_get_clock();
91 void Engine::add_model(std::shared_ptr<kernel::resource::Model> model,
92 const std::vector<kernel::resource::Model*>& dependencies)
94 simgrid::kernel::actor::simcall([this, &model, &dependencies] { pimpl->add_model(std::move(model), dependencies); });
97 const std::vector<simgrid::kernel::resource::Model*>& Engine::get_all_models() const
99 return pimpl->get_all_models();
103 * Creates a new platform, including hosts, links, and the routing table.
106 * See also: :ref:`platform`.
109 void Engine::load_platform(const std::string& platf) const
111 double start = xbt_os_time();
112 parse_platform_file(platf);
114 double end = xbt_os_time();
115 XBT_DEBUG("PARSE TIME: %g", (end - start));
118 void Engine::register_function(const std::string& name, int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v329
120 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
121 return xbt::wrap_main(code, std::move(args));
123 register_function(name, code_factory);
125 void Engine::register_default(int (*code)(int, char**)) // XBT_ATTRIB_DEPRECATED_v329
127 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
130 /** Registers the main function of an actor that will be launched from the deployment file */
131 void Engine::register_function(const std::string& name, const std::function<void(int, char**)>& code)
133 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
134 return xbt::wrap_main(code, std::move(args));
136 register_function(name, code_factory);
139 /** Registers the main function of an actor that will be launched from the deployment file */
140 void Engine::register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code)
142 kernel::actor::ActorCodeFactory code_factory = [code{code}](std::vector<std::string> args) mutable {
143 return std::bind(std::move(code), std::move(args));
145 register_function(name, code_factory);
147 /** Registers a function as the default main function of actors
149 * It will be used as fallback when the function requested from the deployment file was not registered.
150 * It is used for trace-based simulations (see examples/cpp/replay-comms and similar).
152 void Engine::register_default(const std::function<void(int, char**)>& code)
154 register_default([code](std::vector<std::string> args) { return xbt::wrap_main(code, std::move(args)); });
156 void Engine::register_default(const kernel::actor::ActorCodeFactory& code)
158 simgrid::kernel::actor::simcall([this, &code]() { pimpl->register_default(code); });
161 void Engine::register_function(const std::string& name, const kernel::actor::ActorCodeFactory& code)
163 simgrid::kernel::actor::simcall([this, name, &code]() { pimpl->register_function(name, code); });
166 /** Load a deployment file and launch the actors that it contains
169 * See also: :ref:`deploy`.
172 void Engine::load_deployment(const std::string& deploy) const
174 pimpl->load_deployment(deploy);
177 /** Returns the amount of hosts in the platform */
178 size_t Engine::get_host_count() const
180 return pimpl->hosts_.size();
183 std::vector<Host*> Engine::get_all_hosts() const
185 std::vector<Host*> res;
186 for (auto const& kv : pimpl->hosts_)
187 res.push_back(kv.second);
191 std::vector<Host*> Engine::get_filtered_hosts(const std::function<bool(Host*)>& filter) const
193 std::vector<Host*> hosts;
194 for (auto const& kv : pimpl->hosts_) {
195 if (filter(kv.second))
196 hosts.push_back(kv.second);
202 void Engine::host_register(const std::string& name, Host* host)
204 pimpl->hosts_[name] = host;
207 void Engine::host_unregister(const std::string& name)
209 pimpl->hosts_.erase(name);
212 /** @brief Find a host from its name.
214 * @throw std::invalid_argument if the searched host does not exist.
216 Host* Engine::host_by_name(const std::string& name) const
218 auto host = pimpl->hosts_.find(name);
219 if (host == pimpl->hosts_.end())
220 throw std::invalid_argument(std::string("Host not found: '") + name + std::string("'"));
224 /** @brief Find a host from its name (or nullptr if that host does not exist) */
225 Host* Engine::host_by_name_or_null(const std::string& name) const
227 auto host = pimpl->hosts_.find(name);
228 return host == pimpl->hosts_.end() ? nullptr : host->second;
231 /** @brief Find a link from its name.
233 * @throw std::invalid_argument if the searched link does not exist.
235 Link* Engine::link_by_name(const std::string& name) const
237 auto link = pimpl->links_.find(name);
238 if (link == pimpl->links_.end())
239 throw std::invalid_argument(std::string("Link not found: ") + name);
240 return link->second->get_iface();
243 /** @brief Find a link from its name (or nullptr if that link does not exist) */
244 Link* Engine::link_by_name_or_null(const std::string& name) const
246 auto link = pimpl->links_.find(name);
247 return link == pimpl->links_.end() ? nullptr : link->second->get_iface();
250 /** @brief Find a mailox from its name or create one if it does not exist) */
251 Mailbox* Engine::mailbox_by_name_or_create(const std::string& name) const
253 /* two actors may have pushed the same mbox_create simcall at the same time */
254 kernel::activity::MailboxImpl* mbox = kernel::actor::simcall([&name, this] {
255 auto m = pimpl->mailboxes_.emplace(name, nullptr);
257 auto* mbox = new kernel::activity::MailboxImpl(name);
258 XBT_DEBUG("Creating a mailbox at %p with name %s", mbox, name.c_str());
259 m.first->second = mbox;
261 return m.first->second;
263 return mbox->get_iface();
266 void Engine::link_register(const std::string& name, const Link* link)
268 pimpl->links_[name] = link->get_impl();
271 void Engine::link_unregister(const std::string& name)
273 pimpl->links_.erase(name);
276 /** @brief Returns the amount of links in the platform */
277 size_t Engine::get_link_count() const
279 return pimpl->links_.size();
282 /** @brief Returns the list of all links found in the platform */
283 std::vector<Link*> Engine::get_all_links() const
285 std::vector<Link*> res;
286 for (auto const& kv : pimpl->links_)
287 res.push_back(kv.second->get_iface());
291 std::vector<Link*> Engine::get_filtered_links(const std::function<bool(Link*)>& filter) const
293 std::vector<Link*> filtered_list;
294 for (auto const& kv : pimpl->links_) {
295 Link* l = kv.second->get_iface();
297 filtered_list.push_back(l);
299 return filtered_list;
302 size_t Engine::get_actor_count() const
304 return pimpl->get_actor_count();
307 std::vector<ActorPtr> Engine::get_all_actors() const
309 std::vector<ActorPtr> actor_list;
310 for (auto const& kv : pimpl->get_actor_list()) {
311 actor_list.push_back(kv.second->get_iface());
316 std::vector<ActorPtr> Engine::get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const
318 std::vector<ActorPtr> actor_list;
319 for (auto const& kv : pimpl->get_actor_list()) {
320 if (filter(kv.second->get_iface()))
321 actor_list.push_back(kv.second->get_iface());
326 void Engine::run() const
328 /* sealing resources before run: links */
329 for (auto* link : get_all_links())
331 /* seal netzone root, recursively seal children netzones, hosts and disks */
332 get_netzone_root()->seal();
334 /* Clean IO before the run */
338 if (MC_is_active()) {
345 /** @brief Retrieve the root netzone, containing all others */
346 s4u::NetZone* Engine::get_netzone_root() const
348 if (pimpl->netzone_root_)
349 return pimpl->netzone_root_->get_iface();
352 /** @brief Set the root netzone, containing all others. Once set, it cannot be changed. */
353 void Engine::set_netzone_root(const s4u::NetZone* netzone)
355 xbt_assert(pimpl->netzone_root_ == nullptr, "The root NetZone cannot be changed once set");
356 pimpl->netzone_root_ = netzone->get_impl();
359 static NetZone* netzone_by_name_recursive(NetZone* current, const std::string& name)
361 if (current->get_name() == name)
364 for (auto const& elem : current->get_children()) {
365 NetZone* tmp = netzone_by_name_recursive(elem, name);
366 if (tmp != nullptr) {
373 /** @brief Retrieve the NetZone of the given name (or nullptr if not found) */
374 NetZone* Engine::netzone_by_name_or_null(const std::string& name) const
376 return netzone_by_name_recursive(get_netzone_root(), name);
379 /** @brief Retrieve the netpoint of the given name (or nullptr if not found) */
380 kernel::routing::NetPoint* Engine::netpoint_by_name_or_null(const std::string& name) const
382 auto netp = pimpl->netpoints_.find(name);
383 return netp == pimpl->netpoints_.end() ? nullptr : netp->second;
386 kernel::routing::NetPoint* Engine::netpoint_by_name(const std::string& name) const
388 auto netp = netpoint_by_name_or_null(name);
389 if (netp == nullptr) {
390 throw std::invalid_argument(std::string("Netpoint not found: %s") + name);
395 std::vector<kernel::routing::NetPoint*> Engine::get_all_netpoints() const
397 std::vector<kernel::routing::NetPoint*> res;
398 for (auto const& kv : pimpl->netpoints_)
399 res.push_back(kv.second);
403 /** @brief Register a new netpoint to the system */
404 void Engine::netpoint_register(kernel::routing::NetPoint* point)
406 simgrid::kernel::actor::simcall([this, point] { pimpl->netpoints_[point->get_name()] = point; });
409 /** @brief Unregister a given netpoint */
410 void Engine::netpoint_unregister(kernel::routing::NetPoint* point)
412 kernel::actor::simcall([this, point] {
413 pimpl->netpoints_.erase(point->get_name());
418 bool Engine::is_initialized()
420 return Engine::instance_ != nullptr;
422 void Engine::set_config(const std::string& str)
424 config::set_parse(str);
426 void Engine::set_config(const std::string& name, int value)
428 config::set_value(name.c_str(), value);
430 void Engine::set_config(const std::string& name, double value)
432 config::set_value(name.c_str(), value);
434 void Engine::set_config(const std::string& name, bool value)
436 config::set_value(name.c_str(), value);
438 void Engine::set_config(const std::string& name, const std::string& value)
440 config::set_value(name.c_str(), value);
444 } // namespace simgrid
446 /* **************************** Public C interface *************************** */
447 void simgrid_init(int* argc, char** argv)
449 simgrid::s4u::Engine e(argc, argv);
451 void simgrid_load_platform(const char* file)
453 simgrid::s4u::Engine::get_instance()->load_platform(file);
456 void simgrid_load_deployment(const char* file)
458 simgrid::s4u::Engine::get_instance()->load_deployment(file);
462 simgrid::s4u::Engine::get_instance()->run();
464 void simgrid_register_function(const char* name, void (*code)(int, char**))
466 simgrid::s4u::Engine::get_instance()->register_function(name, code);
468 void simgrid_register_default(void (*code)(int, char**))
470 simgrid::s4u::Engine::get_instance()->register_default(code);
472 double simgrid_get_clock()
474 return simgrid::s4u::Engine::get_clock();
477 int simgrid_get_actor_count() // XBT_ATTRIB_DEPRECATED_v330
479 return simgrid::s4u::Engine::get_instance()->get_actor_count();