1 /* Copyright (c) 2016-2021. 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_KERNEL_ENGINEIMPL_HPP
7 #define SIMGRID_KERNEL_ENGINEIMPL_HPP
9 #include <simgrid/kernel/resource/Model.hpp>
10 #include <simgrid/s4u/Engine.hpp>
11 #include <simgrid/s4u/NetZone.hpp>
12 #include <simgrid/simix.hpp>
13 #include <xbt/dynar.h>
14 #include <xbt/functional.hpp>
16 #include "src/kernel/activity/ExecImpl.hpp"
17 #include "src/kernel/activity/IoImpl.hpp"
18 #include "src/kernel/activity/MailboxImpl.hpp"
19 #include "src/kernel/activity/SleepImpl.hpp"
20 #include "src/kernel/activity/SynchroRaw.hpp"
21 #include "src/kernel/actor/ActorImpl.hpp"
22 #include "src/surf/SplitDuplexLinkImpl.hpp"
24 #include <boost/intrusive/list.hpp>
29 #include <unordered_map>
34 // In MC mode, the application sends these pointers to the MC
35 xbt_dynar_t get_actors_addr();
36 xbt_dynar_t get_dead_actors_addr();
39 std::map<std::string, s4u::Host*, std::less<>> hosts_;
40 std::map<std::string, resource::LinkImpl*, std::less<>> links_;
41 /* save split-duplex links separately, keep links_ with only LinkImpl* seen by the user
42 * members of a split-duplex are saved in the links_ */
43 std::map<std::string, std::unique_ptr<resource::SplitDuplexLinkImpl>, std::less<>> split_duplex_links_;
44 std::unordered_map<std::string, routing::NetPoint*> netpoints_;
45 std::unordered_map<std::string, activity::MailboxImpl*> mailboxes_;
47 std::unordered_map<std::string, actor::ActorCodeFactory> registered_functions; // Maps function names to actor code
48 actor::ActorCodeFactory default_function; // Function to use as a fallback when the provided name matches nothing
49 std::vector<resource::Model*> models_;
50 std::unordered_map<std::string, std::shared_ptr<resource::Model>> models_prio_;
51 routing::NetZoneImpl* netzone_root_ = nullptr;
52 std::set<actor::ActorImpl*> daemons_;
53 std::vector<actor::ActorImpl*> actors_to_run_;
54 std::vector<actor::ActorImpl*> actors_that_ran_;
55 std::map<aid_t, actor::ActorImpl*> actor_list_;
56 boost::intrusive::list<actor::ActorImpl,
57 boost::intrusive::member_hook<actor::ActorImpl, boost::intrusive::list_member_hook<>,
58 &actor::ActorImpl::kernel_destroy_list_hook>>
61 /* MCer cannot read members actor_list_ and actors_to_destroy_ above in the remote process, so we copy the info it
63 * FIXME: This is supposed to be a temporary hack.
64 * A better solution would be to change the split between MCer and MCed, where the responsibility
65 * to compute the list of the enabled transitions goes to the MCed.
66 * That way, the MCer would not need to have the list of actors on its side.
67 * These info could be published by the MCed to the MCer in a way inspired of vd.so
69 xbt_dynar_t actors_vector_ = xbt_dynar_new(sizeof(actor::ActorImpl*), nullptr);
70 xbt_dynar_t dead_actors_vector_ = xbt_dynar_new(sizeof(actor::ActorImpl*), nullptr);
73 std::vector<xbt::Task<void()>> tasks;
76 static EngineImpl* instance_;
77 actor::ActorImpl* maestro_ = nullptr;
78 context::ContextFactory* context_factory_ = nullptr;
80 std::unique_ptr<void, std::function<int(void*)>> platf_handle_; //!< handle for platform library
84 EngineImpl() = default;
86 /* Currently, only one instance is allowed to exist. This is why you can't copy or move it */
88 EngineImpl(const EngineImpl&) = delete;
89 EngineImpl& operator=(const EngineImpl&) = delete;
90 virtual ~EngineImpl();
91 static void shutdown();
94 void initialize(int* argc, char** argv);
95 void load_platform(const std::string& platf);
96 void load_deployment(const std::string& file) const;
97 void register_function(const std::string& name, const actor::ActorCodeFactory& code);
98 void register_default(const actor::ActorCodeFactory& code);
100 bool is_maestro(const actor::ActorImpl* actor) const { return actor == maestro_; }
101 void set_maestro(actor::ActorImpl* actor) { maestro_ = actor; }
102 actor::ActorImpl* get_maestro() const { return maestro_; }
103 void destroy_maestro()
109 context::ContextFactory* get_context_factory() const { return context_factory_; }
110 void set_context_factory(context::ContextFactory* factory) { context_factory_ = factory; }
111 bool has_context_factory() const { return context_factory_ != nullptr; }
112 void destroy_context_factory()
114 delete context_factory_;
115 context_factory_ = nullptr;
118 void context_mod_init() const;
120 * @brief Add a model to engine list
122 * @param model Pointer to model
123 * @param list List of dependencies for this model
125 void add_model(std::shared_ptr<simgrid::kernel::resource::Model> model,
126 const std::vector<resource::Model*>& dep_models = {});
128 /** @brief Get list of all models managed by this engine */
129 const std::vector<resource::Model*>& get_all_models() const { return models_; }
131 static bool has_instance() { return s4u::Engine::has_instance(); }
132 static EngineImpl* get_instance() { return s4u::Engine::get_instance()->pimpl; }
133 static EngineImpl* get_instance(int* argc, char** argv) { return s4u::Engine::get_instance(argc, argv)->pimpl; }
135 actor::ActorCodeFactory get_function(const std::string& name)
137 auto res = registered_functions.find(name);
138 if (res == registered_functions.end())
139 return default_function;
144 routing::NetZoneImpl* get_netzone_root() const { return netzone_root_; }
146 void add_daemon(actor::ActorImpl* d) { daemons_.insert(d); }
147 void remove_daemon(actor::ActorImpl* d);
148 void add_actor_to_run_list(actor::ActorImpl* actor);
149 void add_actor_to_run_list_no_check(actor::ActorImpl* actor);
150 void add_actor_to_destroy_list(actor::ActorImpl& actor) { actors_to_destroy_.push_back(actor); }
152 bool has_actors_to_run() const { return not actors_to_run_.empty(); }
153 const actor::ActorImpl* get_first_actor_to_run() const { return actors_to_run_.front(); }
154 const actor::ActorImpl* get_actor_to_run_at(unsigned long int i) const { return actors_to_run_[i]; }
155 unsigned long int get_actor_to_run_count() const { return actors_to_run_.size(); }
156 size_t get_actor_count() const { return actor_list_.size(); }
157 actor::ActorImpl* get_actor_by_pid(aid_t pid);
158 void add_actor(aid_t pid, actor::ActorImpl* actor) { actor_list_[pid] = actor; }
159 void remove_actor(aid_t pid) { actor_list_.erase(pid); }
160 void add_split_duplex_link(const std::string& name, std::unique_ptr<resource::SplitDuplexLinkImpl> link);
163 xbt_dynar_t get_actors_vector() const { return actors_vector_; }
164 xbt_dynar_t get_dead_actors_vector() const { return dead_actors_vector_; }
165 void reset_actor_dynar() { xbt_dynar_reset(actors_vector_); }
166 void add_actor_to_dynar(actor::ActorImpl* actor) { xbt_dynar_push_as(actors_vector_, actor::ActorImpl*, actor); }
167 void add_dead_actor_to_dynar(actor::ActorImpl* actor)
169 xbt_dynar_push_as(dead_actors_vector_, actor::ActorImpl*, actor);
173 const std::map<aid_t, actor::ActorImpl*>& get_actor_list() const { return actor_list_; }
174 const std::vector<actor::ActorImpl*>& get_actors_to_run() const { return actors_to_run_; }
175 const std::vector<actor::ActorImpl*>& get_actors_that_ran() const { return actors_that_ran_; }
177 std::mutex& get_mutex() { return mutex_; }
178 bool execute_tasks();
179 void add_task(xbt::Task<void()>&& t) { tasks.push_back(std::move(t)); }
180 void wake_all_waiting_actors() const;
184 * Should be called some time to time to free the memory allocated for actors that have finished (or killed).
187 void display_all_actor_status() const;
188 void run_all_actors();
190 /* @brief Finish simulation initialization
191 * This function must be called before the first call to solve()
193 void presolve() const;
194 /** @brief Performs a part of the simulation
195 * @param max_date Maximum date to update the simulation to, or -1
196 * @return the elapsed time, or -1.0 if no event could be executed
198 * This function execute all possible events, update the action states and returns the time elapsed.
199 * When you call execute or communicate on a model, the corresponding actions are not executed immediately but only
200 * when you call solve().
201 * Note that the returned elapsed time can be zero.
203 double solve(double max_date) const;
205 /** @brief Run the main simulation loop. */
208 /** @brief Return the current time in milliseconds. */
209 static double get_clock();
212 } // namespace kernel
213 } // namespace simgrid