1 /* Copyright (c) 2006-2020. 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
10 #include <xbt/functional.hpp>
12 #include <simgrid/forward.h>
13 #include <simgrid/simix.hpp>
15 #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 /** 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);
51 void register_function(const std::string& name, int (*code)(int, char**));
52 void register_function(const std::string& name, void (*code)(std::vector<std::string>));
53 void register_default(int (*code)(int, char**));
55 template <class F> void register_actor(const std::string& name)
57 simix::register_function(name, [](std::vector<std::string> args) {
58 return simix::ActorCode([args] {
59 F code(std::move(args));
65 template <class F> void register_actor(const std::string& name, F code)
67 simix::register_function(name, [code](std::vector<std::string> args) {
68 return simix::ActorCode([code, args] { code(std::move(args)); });
72 void load_deployment(const std::string& deploy);
80 friend kernel::routing::NetPoint;
81 friend kernel::routing::NetZoneImpl;
82 friend kernel::resource::LinkImpl;
83 void host_register(const std::string& name, Host* host);
84 void host_unregister(const std::string& name);
85 void link_register(const std::string& name, const Link* link);
86 void link_unregister(const std::string& name);
87 void storage_register(const std::string& name, const Storage* storage);
88 void storage_unregister(const std::string& name);
89 void netpoint_register(simgrid::kernel::routing::NetPoint* card);
90 void netpoint_unregister(simgrid::kernel::routing::NetPoint* card);
94 /** Returns the amount of hosts existing in the platform. */
95 size_t get_host_count();
96 /** Returns a vector of all hosts found in the platform.
98 * The order is generally different from the creation/declaration order in the XML platform because we use a hash
101 std::vector<Host*> get_all_hosts();
102 std::vector<Host*> get_filtered_hosts(const std::function<bool(Host*)>& filter);
103 Host* host_by_name(const std::string& name);
104 Host* host_by_name_or_null(const std::string& name);
106 size_t get_link_count();
107 std::vector<Link*> get_all_links();
108 std::vector<Link*> get_filtered_links(const std::function<bool(Link*)>& filter);
109 Link* link_by_name(const std::string& name);
110 Link* link_by_name_or_null(const std::string& name);
112 size_t get_actor_count();
113 std::vector<ActorPtr> get_all_actors();
114 std::vector<ActorPtr> get_filtered_actors(const std::function<bool(ActorPtr)>& filter);
117 size_t get_storage_count();
118 std::vector<Storage*> get_all_storages();
119 Storage* storage_by_name(const std::string& name);
120 Storage* storage_by_name_or_null(const std::string& name);
123 std::vector<kernel::routing::NetPoint*> get_all_netpoints();
124 kernel::routing::NetPoint* netpoint_by_name_or_null(const std::string& name);
126 NetZone* get_netzone_root();
127 void set_netzone_root(const NetZone* netzone);
129 NetZone* netzone_by_name_or_null(const std::string& name);
131 /** @brief Retrieves all netzones of the type indicated by the template argument */
132 template <class T> std::vector<T*> get_filtered_netzones()
134 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
135 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
137 get_filtered_netzones_recursive(get_netzone_root(), &res);
141 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
142 static bool is_initialized();
143 /** @brief set a configuration variable
146 * Do --help on any simgrid binary to see the list of currently existing configuration variables
147 * (see also :ref:`options`).
151 * e->set_config("host/model:ptask_L07");
153 void set_config(const std::string& str);
155 /** Callback fired when the platform is created (ie, the xml file parsed),
156 * right before the actual simulation starts. */
157 static xbt::signal<void()> on_platform_created;
159 /** Callback fired when the platform is about to be created
160 * (ie, after any configuration change and just before the resource creation) */
161 static xbt::signal<void()> on_platform_creation;
163 /** Callback fired when the main simulation loop ends, just before the end of Engine::run() */
164 static xbt::signal<void()> on_simulation_end;
166 /** Callback fired when the time jumps into the future */
167 static xbt::signal<void(double)> on_time_advance;
169 /** Callback fired when the time cannot advance because of inter-actors deadlock */
170 static xbt::signal<void(void)> on_deadlock;
173 kernel::EngineImpl* const pimpl;
174 static Engine* instance_;
177 #ifndef DOXYGEN /* Internal use only, no need to expose it */
179 XBT_PRIVATE void get_filtered_netzones_recursive(const s4u::NetZone* current, std::vector<T*>* whereto)
181 static_assert(std::is_base_of<kernel::routing::NetZoneImpl, T>::value,
182 "Filtering netzones is only possible for subclasses of kernel::routing::NetZoneImpl");
183 for (auto const& elem : current->get_children()) {
184 get_filtered_netzones_recursive(elem, whereto);
185 T* elem_impl = dynamic_cast<T*>(elem->get_impl());
186 if (elem_impl != nullptr)
187 whereto->push_back(elem_impl);
192 } // namespace simgrid
194 #endif /* SIMGRID_S4U_ENGINE_HPP */