1 /* Copyright (c) 2006-2022. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_S4U_ENGINE_HPP
7 #define SIMGRID_S4U_ENGINE_HPP
11 #include <simgrid/forward.h>
13 #include <simgrid/kernel/resource/Model.hpp>
14 #include <simgrid/s4u/NetZone.hpp>
23 /** @brief Simulation engine
25 * This is a singleton containing all the main functions of the simulation.
27 class XBT_PUBLIC Engine {
29 friend simgrid::kernel::EngineImpl;
33 /** Constructor, taking only the name of your main function */
34 explicit Engine(std::string name);
35 /** Constructor, taking the command line parameters of your main function */
36 explicit Engine(int* argc, char** argv);
37 /* Currently, only one instance is allowed to exist. This is why you can't copy or move it */
39 Engine(const Engine&) = delete;
40 Engine(Engine&&) = delete;
44 /** Finalize the default engine and all its dependencies */
47 /** Run the simulation until its end */
50 /** Run the simulation until the specified date */
51 void run_until(double max_date) const;
53 /** @brief Retrieve the simulation time (in seconds) */
54 static double get_clock();
55 /** @brief Retrieve the engine singleton */
56 static s4u::Engine* get_instance();
57 static s4u::Engine* get_instance(int* argc, char** argv);
58 static bool has_instance() { return instance_ != nullptr; }
60 void load_platform(const std::string& platf) const;
61 void seal_platform() const;
63 void register_function(const std::string& name, const std::function<void(int, char**)>& code);
64 void register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code);
65 void register_function(const std::string& name, const kernel::actor::ActorCodeFactory& factory);
67 void register_default(const std::function<void(int, char**)>& code);
68 void register_default(const kernel::actor::ActorCodeFactory& factory);
70 template <class F> void register_actor(const std::string& name)
72 kernel::actor::ActorCodeFactory code_factory = [](std::vector<std::string> args) {
73 return kernel::actor::ActorCode([args = std::move(args)]() mutable {
74 F code(std::move(args));
78 register_function(name, code_factory);
80 template <class F> void register_actor(const std::string& name, F code)
82 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
83 return kernel::actor::ActorCode([code, args = std::move(args)]() mutable { code(std::move(args)); });
85 register_function(name, code_factory);
88 /** If non-null, the provided set will be filled with all activities that fail to start because of a veto */
89 void track_vetoed_activities(std::set<Activity*>* vetoed_activities) const;
91 void load_deployment(const std::string& deploy) const;
98 friend kernel::routing::NetPoint;
99 friend kernel::routing::NetZoneImpl;
100 friend kernel::resource::HostImpl;
101 friend kernel::resource::StandardLinkImpl;
102 void host_register(const std::string& name, Host* host);
103 void host_unregister(const std::string& name);
104 void link_register(const std::string& name, const Link* link);
105 void link_unregister(const std::string& name);
106 void netpoint_register(simgrid::kernel::routing::NetPoint* card);
107 void netpoint_unregister(simgrid::kernel::routing::NetPoint* card);
111 /** Returns the amount of hosts existing in the platform. */
112 size_t get_host_count() const;
113 /** Returns a vector of all hosts found in the platform.
115 * The order is generally different from the creation/declaration order in the XML platform because we use a hash
118 std::vector<Host*> get_all_hosts() const;
119 std::vector<Host*> get_filtered_hosts(const std::function<bool(Host*)>& filter) const;
120 Host* host_by_name(const std::string& name) const;
121 Host* host_by_name_or_null(const std::string& name) const;
123 size_t get_link_count() const;
124 std::vector<Link*> get_all_links() const;
125 std::vector<Link*> get_filtered_links(const std::function<bool(Link*)>& filter) const;
126 Link* link_by_name(const std::string& name) const;
128 * @brief Find a split-duplex link from its name.
129 * @throw std::invalid_argument if the searched link does not exist.
131 SplitDuplexLink* split_duplex_link_by_name(const std::string& name) const;
132 Link* link_by_name_or_null(const std::string& name) const;
134 Mailbox* mailbox_by_name_or_create(const std::string& name) const;
136 size_t get_actor_count() const;
137 std::vector<ActorPtr> get_all_actors() const;
138 std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const;
140 std::vector<kernel::routing::NetPoint*> get_all_netpoints() const;
141 kernel::routing::NetPoint* netpoint_by_name_or_null(const std::string& name) const;
143 * @brief Get netpoint by its name
145 * @param name Netpoint name
146 * @throw std::invalid_argument if netpoint doesn't exist
148 kernel::routing::NetPoint* netpoint_by_name(const std::string& name) const;
150 NetZone* get_netzone_root() const;
151 void set_netzone_root(const NetZone* netzone);
153 NetZone* netzone_by_name_or_null(const std::string& name) const;
156 * @brief Add a model to engine list
158 * @param model Pointer to model
159 * @param dependencies List of dependencies for this model (optional)
161 void add_model(std::shared_ptr<simgrid::kernel::resource::Model> model,
162 const std::vector<kernel::resource::Model*>& dependencies = {});
164 /** @brief Get list of all models managed by this engine */
165 const std::vector<simgrid::kernel::resource::Model*>& get_all_models() const;
167 /** @brief Retrieves all netzones of the type indicated by the template argument */
168 template <class T> std::vector<T*> get_filtered_netzones() const
170 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
171 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
173 get_filtered_netzones_recursive(get_netzone_root(), &res);
177 kernel::EngineImpl* get_impl() const { return pimpl; }
179 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
180 static bool is_initialized();
181 /** @brief set a configuration variable
184 * Do --help on any simgrid binary to see the list of currently existing configuration variables
185 * (see also :ref:`options`).
189 * simgrid::s4u::Engine::set_config("host/model:ptask_L07");
191 static void set_config(const std::string& str);
192 static void set_config(const std::string& name, int value);
193 static void set_config(const std::string& name, bool value);
194 static void set_config(const std::string& name, double value);
195 static void set_config(const std::string& name, const std::string& value);
197 Engine* set_default_comm_data_copy_callback(void (*callback)(kernel::activity::CommImpl*, void*, size_t));
199 /** Add a callback fired when the platform is created (ie, the xml file parsed),
200 * right before the actual simulation starts. */
201 static void on_platform_created_cb(const std::function<void()>& cb) { on_platform_created.connect(cb); }
202 /** Add a callback fired when the platform is about to be created
203 * (ie, after any configuration change and just before the resource creation) */
204 static void on_platform_creation_cb(const std::function<void()>& cb) { on_platform_creation.connect(cb); }
205 /** Add a callback fired when the main simulation loop ends, just before the end of Engine::run() */
206 static void on_simulation_end_cb(const std::function<void()>& cb) { on_simulation_end.connect(cb); }
208 /** Add a callback fired when the time jumps into the future */
209 static void on_time_advance_cb(const std::function<void(double)>& cb) { on_time_advance.connect(cb); }
211 /** Add a callback fired when the time cannot advance because of inter-actors deadlock. Note that the on_exit of each
212 * actor is also executed on deadlock. */
213 static void on_deadlock_cb(const std::function<void(void)>& cb) { on_deadlock.connect(cb); }
216 /* FIXME signals should be private */
217 static xbt::signal<void()> on_platform_created;
218 static xbt::signal<void()> on_platform_creation;
221 static xbt::signal<void()> on_simulation_end;
222 static xbt::signal<void(double)> on_time_advance;
223 static xbt::signal<void(void)> on_deadlock;
224 kernel::EngineImpl* const pimpl;
225 static Engine* instance_;
226 void initialize(int* argc, char** argv);
229 std::vector<ActivityPtr> create_DAG_from_dot(const std::string& filename);
230 std::vector<ActivityPtr> create_DAG_from_DAX(const std::string& filename);
232 #ifndef DOXYGEN /* Internal use only, no need to expose it */
234 XBT_PRIVATE void get_filtered_netzones_recursive(const s4u::NetZone* current, std::vector<T*>* whereto)
236 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
237 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
238 for (auto const& elem : current->get_children()) {
239 get_filtered_netzones_recursive(elem, whereto);
240 auto* elem_impl = dynamic_cast<T*>(elem->get_impl());
241 if (elem_impl != nullptr)
242 whereto->push_back(elem_impl);
247 } // namespace simgrid
249 #endif /* SIMGRID_S4U_ENGINE_HPP */