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 */
46 /** Run the simulation until its end */
49 /** Run the simulation until the specified date */
50 void run_until(double max_date) const;
52 /** @brief Retrieve the simulation time (in seconds) */
53 static double get_clock();
54 /** @brief Retrieve the engine singleton */
55 static s4u::Engine* get_instance();
56 static s4u::Engine* get_instance(int* argc, char** argv);
57 static bool has_instance() { return instance_ != nullptr; }
59 void load_platform(const std::string& platf) const;
61 void register_function(const std::string& name, const std::function<void(int, char**)>& code);
62 void register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code);
63 void register_function(const std::string& name, const kernel::actor::ActorCodeFactory& factory);
65 void register_default(const std::function<void(int, char**)>& code);
66 void register_default(const kernel::actor::ActorCodeFactory& factory);
68 template <class F> void register_actor(const std::string& name)
70 kernel::actor::ActorCodeFactory code_factory = [](std::vector<std::string> args) {
71 return kernel::actor::ActorCode([args = std::move(args)]() mutable {
72 F code(std::move(args));
76 register_function(name, code_factory);
78 template <class F> void register_actor(const std::string& name, F code)
80 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
81 return kernel::actor::ActorCode([code, args = std::move(args)]() mutable { code(std::move(args)); });
83 register_function(name, code_factory);
86 void load_deployment(const std::string& deploy) const;
93 friend kernel::routing::NetPoint;
94 friend kernel::routing::NetZoneImpl;
95 friend kernel::resource::HostImpl;
96 friend kernel::resource::LinkImpl;
97 void host_register(const std::string& name, Host* host);
98 void host_unregister(const std::string& name);
99 void link_register(const std::string& name, const Link* link);
100 void link_unregister(const std::string& name);
101 void netpoint_register(simgrid::kernel::routing::NetPoint* card);
102 void netpoint_unregister(simgrid::kernel::routing::NetPoint* card);
106 /** Returns the amount of hosts existing in the platform. */
107 size_t get_host_count() const;
108 /** Returns a vector of all hosts found in the platform.
110 * The order is generally different from the creation/declaration order in the XML platform because we use a hash
113 std::vector<Host*> get_all_hosts() const;
114 std::vector<Host*> get_filtered_hosts(const std::function<bool(Host*)>& filter) const;
115 Host* host_by_name(const std::string& name) const;
116 Host* host_by_name_or_null(const std::string& name) const;
118 size_t get_link_count() const;
119 std::vector<Link*> get_all_links() const;
120 std::vector<Link*> get_filtered_links(const std::function<bool(Link*)>& filter) const;
121 Link* link_by_name(const std::string& name) const;
123 * @brief Find a split-duplex link from its name.
124 * @throw std::invalid_argument if the searched link does not exist.
126 SplitDuplexLink* split_duplex_link_by_name(const std::string& name) const;
127 Link* link_by_name_or_null(const std::string& name) const;
129 Mailbox* mailbox_by_name_or_create(const std::string& name) const;
131 size_t get_actor_count() const;
132 std::vector<ActorPtr> get_all_actors() const;
133 std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const;
135 std::vector<kernel::routing::NetPoint*> get_all_netpoints() const;
136 kernel::routing::NetPoint* netpoint_by_name_or_null(const std::string& name) const;
138 * @brief Get netpoint by its name
140 * @param name Netpoint name
141 * @throw std::invalid_argument if netpoint doesn't exist
143 kernel::routing::NetPoint* netpoint_by_name(const std::string& name) const;
145 NetZone* get_netzone_root() const;
146 void set_netzone_root(const NetZone* netzone);
148 NetZone* netzone_by_name_or_null(const std::string& name) const;
151 * @brief Add a model to engine list
153 * @param model Pointer to model
154 * @param dependencies List of dependencies for this model (optional)
156 void add_model(std::shared_ptr<simgrid::kernel::resource::Model> model,
157 const std::vector<kernel::resource::Model*>& dependencies = {});
159 /** @brief Get list of all models managed by this engine */
160 const std::vector<simgrid::kernel::resource::Model*>& get_all_models() const;
162 /** @brief Retrieves all netzones of the type indicated by the template argument */
163 template <class T> std::vector<T*> get_filtered_netzones() const
165 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
166 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
168 get_filtered_netzones_recursive(get_netzone_root(), &res);
172 kernel::EngineImpl* get_impl() const { return pimpl; }
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 Engine* set_default_comm_data_copy_callback(void (*callback)(kernel::activity::CommImpl*, void*, size_t));
193 /** Callback fired when the platform is created (ie, the xml file parsed),
194 * right before the actual simulation starts. */
195 static xbt::signal<void()> on_platform_created;
197 /** Callback fired when the platform is about to be created
198 * (ie, after any configuration change and just before the resource creation) */
199 static xbt::signal<void()> on_platform_creation;
201 /** Callback fired when the main simulation loop ends, just before the end of Engine::run() */
202 static xbt::signal<void()> on_simulation_end;
204 /** Callback fired when the time jumps into the future */
205 static xbt::signal<void(double)> on_time_advance;
207 /** Callback fired when the time cannot advance because of inter-actors deadlock. Note that the on_exit of each actor
208 * is also executed on deadlock. */
209 static xbt::signal<void(void)> on_deadlock;
212 kernel::EngineImpl* const pimpl;
213 static Engine* instance_;
214 void initialize(int* argc, char** argv);
217 #ifndef DOXYGEN /* Internal use only, no need to expose it */
219 XBT_PRIVATE void get_filtered_netzones_recursive(const s4u::NetZone* current, std::vector<T*>* whereto)
221 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
222 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
223 for (auto const& elem : current->get_children()) {
224 get_filtered_netzones_recursive(elem, whereto);
225 auto* elem_impl = dynamic_cast<T*>(elem->get_impl());
226 if (elem_impl != nullptr)
227 whereto->push_back(elem_impl);
232 } // namespace simgrid
234 #endif /* SIMGRID_S4U_ENGINE_HPP */