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/s4u/NetZone.hpp>
21 /** @brief Simulation engine
23 * This is a singleton containing all the main functions of the simulation.
25 class XBT_PUBLIC Engine {
26 friend simgrid::kernel::EngineImpl;
29 /** Constructor, taking the command line parameters of your main function */
30 explicit Engine(int* argc, char** argv);
31 /* Currently, only one instance is allowed to exist. This is why you can't copy or move it */
33 Engine(const Engine&) = delete;
34 Engine(Engine&&) = delete;
38 /** Finalize the default engine and all its dependencies */
39 static void shutdown();
41 /** Run the simulation after initialization */
44 /** @brief Retrieve the simulation time (in seconds) */
45 static double get_clock();
46 /** @brief Retrieve the engine singleton */
47 static s4u::Engine* get_instance();
49 void load_platform(const std::string& platf) const;
52 XBT_ATTRIB_DEPRECATED_v330("Please change the return code of your actors to void") void register_function(
53 const std::string& name, int (*code)(int, char**));
54 XBT_ATTRIB_DEPRECATED_v330("Please change the return code of your actors to void") void register_default(
55 int (*code)(int, char**));
58 void register_function(const std::string& name, const std::function<void(int, char**)>& code);
59 void register_function(const std::string& name, const std::function<void(std::vector<std::string>)>& code);
60 void register_function(const std::string& name, const kernel::actor::ActorCodeFactory& factory);
62 void register_default(const std::function<void(int, char**)>& code);
63 void register_default(const kernel::actor::ActorCodeFactory& factory);
65 template <class F> void register_actor(const std::string& name)
67 kernel::actor::ActorCodeFactory code_factory = [](std::vector<std::string> args) {
68 return kernel::actor::ActorCode([args = std::move(args)]() mutable {
69 F code(std::move(args));
73 register_function(name, code_factory);
75 template <class F> void register_actor(const std::string& name, F code)
77 kernel::actor::ActorCodeFactory code_factory = [code](std::vector<std::string> args) {
78 return kernel::actor::ActorCode([code, args = std::move(args)]() mutable { code(std::move(args)); });
80 register_function(name, code_factory);
83 void load_deployment(const std::string& deploy) const;
90 friend kernel::routing::NetPoint;
91 friend kernel::routing::NetZoneImpl;
92 friend kernel::resource::LinkImpl;
93 void host_register(const std::string& name, Host* host);
94 void host_unregister(const std::string& name);
95 void link_register(const std::string& name, const Link* link);
96 void link_unregister(const std::string& name);
97 void netpoint_register(simgrid::kernel::routing::NetPoint* card);
98 void netpoint_unregister(simgrid::kernel::routing::NetPoint* card);
102 /** Returns the amount of hosts existing in the platform. */
103 size_t get_host_count() const;
104 /** Returns a vector of all hosts found in the platform.
106 * The order is generally different from the creation/declaration order in the XML platform because we use a hash
109 std::vector<Host*> get_all_hosts() const;
110 std::vector<Host*> get_filtered_hosts(const std::function<bool(Host*)>& filter) const;
111 Host* host_by_name(const std::string& name) const;
112 Host* host_by_name_or_null(const std::string& name) const;
114 size_t get_link_count() const;
115 std::vector<Link*> get_all_links() const;
116 std::vector<Link*> get_filtered_links(const std::function<bool(Link*)>& filter) const;
117 Link* link_by_name(const std::string& name) const;
118 Link* link_by_name_or_null(const std::string& name) const;
120 size_t get_actor_count() const;
121 std::vector<ActorPtr> get_all_actors() const;
122 std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter) const;
124 std::vector<kernel::routing::NetPoint*> get_all_netpoints() const;
125 kernel::routing::NetPoint* netpoint_by_name_or_null(const std::string& name) const;
127 NetZone* get_netzone_root() const;
128 void set_netzone_root(const NetZone* netzone);
130 NetZone* netzone_by_name_or_null(const std::string& name) const;
132 /** @brief Retrieves all netzones of the type indicated by the template argument */
133 template <class T> std::vector<T*> get_filtered_netzones() const
135 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
136 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
138 get_filtered_netzones_recursive(get_netzone_root(), &res);
142 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
143 static bool is_initialized();
144 /** @brief set a configuration variable
147 * Do --help on any simgrid binary to see the list of currently existing configuration variables
148 * (see also :ref:`options`).
152 * simgrid::s4u::Engine::set_config("host/model:ptask_L07");
154 static void set_config(const std::string& str);
155 static void set_config(const std::string& name, int value);
156 static void set_config(const std::string& name, bool value);
157 static void set_config(const std::string& name, double value);
158 static void set_config(const std::string& name, const std::string& value);
160 /** Callback fired when the platform is created (ie, the xml file parsed),
161 * right before the actual simulation starts. */
162 static xbt::signal<void()> on_platform_created;
164 /** Callback fired when the platform is about to be created
165 * (ie, after any configuration change and just before the resource creation) */
166 static xbt::signal<void()> on_platform_creation;
168 /** Callback fired when the main simulation loop ends, just before the end of Engine::run() */
169 static xbt::signal<void()> on_simulation_end;
171 /** Callback fired when the time jumps into the future */
172 static xbt::signal<void(double)> on_time_advance;
174 /** Callback fired when the time cannot advance because of inter-actors deadlock. Note that the on_exit of each actor
175 * is also executed on deadlock. */
176 static xbt::signal<void(void)> on_deadlock;
179 kernel::EngineImpl* const pimpl;
180 static Engine* instance_;
183 #ifndef DOXYGEN /* Internal use only, no need to expose it */
185 XBT_PRIVATE void get_filtered_netzones_recursive(const s4u::NetZone* current, std::vector<T*>* whereto)
187 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
188 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
189 for (auto const& elem : current->get_children()) {
190 get_filtered_netzones_recursive(elem, whereto);
191 auto* elem_impl = dynamic_cast<T*>(elem->get_impl());
192 if (elem_impl != nullptr)
193 whereto->push_back(elem_impl);
198 } // namespace simgrid
200 #endif /* SIMGRID_S4U_ENGINE_HPP */