1 /* Copyright (c) 2006-2021. 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>
22 /** @brief Simulation engine
24 * This is a singleton containing all the main functions of the simulation.
26 class XBT_PUBLIC Engine {
28 friend simgrid::kernel::EngineImpl;
32 /** Constructor, taking only the name of your main function */
33 explicit Engine(std::string name);
34 /** Constructor, taking the command line parameters of your main function */
35 explicit Engine(int* argc, char** argv);
36 /* Currently, only one instance is allowed to exist. This is why you can't copy or move it */
38 Engine(const Engine&) = delete;
39 Engine(Engine&&) = delete;
43 /** Finalize the default engine and all its dependencies */
44 static void shutdown();
46 /** Run the simulation after initialization */
49 /** @brief Retrieve the simulation time (in seconds) */
50 static double get_clock();
51 /** @brief Retrieve the engine singleton */
52 static s4u::Engine* get_instance();
54 void load_platform(const std::string& platf) const;
57 XBT_ATTRIB_DEPRECATED_v330("Please change the return code of your actors to void") void register_function(
58 const std::string& name, int (*code)(int, char**));
59 XBT_ATTRIB_DEPRECATED_v330("Please change the return code of your actors to void") void register_default(
60 int (*code)(int, char**));
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 void load_deployment(const std::string& deploy) const;
92 friend surf::HostImpl;
96 friend kernel::routing::NetPoint;
97 friend kernel::routing::NetZoneImpl;
98 friend kernel::resource::LinkImpl;
99 void host_register(const std::string& name, Host* host);
100 void host_unregister(const std::string& name);
101 void link_register(const std::string& name, const Link* link);
102 void link_unregister(const std::string& name);
103 void netpoint_register(simgrid::kernel::routing::NetPoint* card);
104 void netpoint_unregister(simgrid::kernel::routing::NetPoint* card);
108 /** Returns the amount of hosts existing in the platform. */
109 size_t get_host_count() const;
110 /** Returns a vector of all hosts found in the platform.
112 * The order is generally different from the creation/declaration order in the XML platform because we use a hash
115 std::vector<Host*> get_all_hosts() const;
116 std::vector<Host*> get_filtered_hosts(const std::function<bool(Host*)>& filter) const;
117 Host* host_by_name(const std::string& name) const;
118 Host* host_by_name_or_null(const std::string& name) const;
120 size_t get_link_count() const;
121 std::vector<Link*> get_all_links() const;
122 std::vector<Link*> get_filtered_links(const std::function<bool(Link*)>& filter) const;
123 Link* link_by_name(const std::string& name) const;
125 * @brief Find a split-duplex link from its name.
126 * @throw std::invalid_argument if the searched link does not exist.
128 SplitDuplexLink* split_duplex_link_by_name(const std::string& name) const;
129 Link* link_by_name_or_null(const std::string& name) const;
131 Mailbox* mailbox_by_name_or_create(const std::string& name) const;
133 size_t get_actor_count() const;
134 std::vector<ActorPtr> get_all_actors() const;
135 std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const;
137 std::vector<kernel::routing::NetPoint*> get_all_netpoints() const;
138 kernel::routing::NetPoint* netpoint_by_name_or_null(const std::string& name) const;
140 * @brief Get netpoint by its name
142 * @param name Netpoint name
143 * @throw std::invalid_argument if netpoint doesn't exist
145 kernel::routing::NetPoint* netpoint_by_name(const std::string& name) const;
147 NetZone* get_netzone_root() const;
148 void set_netzone_root(const NetZone* netzone);
150 NetZone* netzone_by_name_or_null(const std::string& name) const;
153 * @brief Add a model to engine list
155 * @param model Pointer to model
156 * @param dependencies List of dependencies for this model (optional)
158 void add_model(std::shared_ptr<simgrid::kernel::resource::Model> model,
159 const std::vector<kernel::resource::Model*>& dependencies = {});
161 /** @brief Get list of all models managed by this engine */
162 const std::vector<simgrid::kernel::resource::Model*>& get_all_models() const;
164 /** @brief Retrieves all netzones of the type indicated by the template argument */
165 template <class T> std::vector<T*> get_filtered_netzones() const
167 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
168 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
170 get_filtered_netzones_recursive(get_netzone_root(), &res);
174 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
175 static bool is_initialized();
176 /** @brief set a configuration variable
179 * Do --help on any simgrid binary to see the list of currently existing configuration variables
180 * (see also :ref:`options`).
184 * simgrid::s4u::Engine::set_config("host/model:ptask_L07");
186 static void set_config(const std::string& str);
187 static void set_config(const std::string& name, int value);
188 static void set_config(const std::string& name, bool value);
189 static void set_config(const std::string& name, double value);
190 static void set_config(const std::string& name, const std::string& value);
192 /** Callback fired when the platform is created (ie, the xml file parsed),
193 * right before the actual simulation starts. */
194 static xbt::signal<void()> on_platform_created;
196 /** Callback fired when the platform is about to be created
197 * (ie, after any configuration change and just before the resource creation) */
198 static xbt::signal<void()> on_platform_creation;
200 /** Callback fired when the main simulation loop ends, just before the end of Engine::run() */
201 static xbt::signal<void()> on_simulation_end;
203 /** Callback fired when the time jumps into the future */
204 static xbt::signal<void(double)> on_time_advance;
206 /** Callback fired when the time cannot advance because of inter-actors deadlock. Note that the on_exit of each actor
207 * is also executed on deadlock. */
208 static xbt::signal<void(void)> on_deadlock;
211 kernel::EngineImpl* const pimpl;
212 static Engine* instance_;
213 void initialize(int* argc, char** argv);
216 #ifndef DOXYGEN /* Internal use only, no need to expose it */
218 XBT_PRIVATE void get_filtered_netzones_recursive(const s4u::NetZone* current, std::vector<T*>* whereto)
220 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
221 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
222 for (auto const& elem : current->get_children()) {
223 get_filtered_netzones_recursive(elem, whereto);
224 auto* elem_impl = dynamic_cast<T*>(elem->get_impl());
225 if (elem_impl != nullptr)
226 whereto->push_back(elem_impl);
231 } // namespace simgrid
233 #endif /* SIMGRID_S4U_ENGINE_HPP */