+ return &sd_global->return_set;
+}
+}
+}
+
+/**
+ * @brief helper for pretty printing of task state
+ * @param state the state of a task
+ * @return the equivalent as a readable string
+ */
+const char *__get_state_name(e_SD_task_state_t state){
+ static std::string state_names[7] =
+ { "not scheduled", "schedulable", "scheduled", "runnable","running", "done", "failed" };
+ return state_names[static_cast<int>(log2(static_cast<double>(state)))].data();
+}
+
+/**
+ * @brief Initializes SD internal data
+ *
+ * This function must be called before any other SD function. Then you should call SD_create_environment().
+ *
+ * @param argc argument number
+ * @param argv argument list
+ * @see SD_create_environment(), SD_exit()
+ */
+void SD_init_nocheck(int *argc, char **argv)
+{
+ xbt_assert(sd_global == nullptr, "SD_init() already called");
+
+ surf_init(argc, argv);
+
+ sd_global = new simgrid::sd::Global();
+
+ simgrid::config::set_default<std::string>("host/model", "ptask_L07");
+ if (simgrid::config::get_value<bool>("clean-atexit"))
+ atexit(SD_exit);
+}
+
+/** @brief set a configuration variable
+ *
+ * Do --help on any simgrid binary to see the list of currently existing configuration variables, and
+ * see Section @ref options.
+ *
+ * Example: SD_config("host/model","default")
+ */
+void SD_config(const char *key, const char *value){
+ xbt_assert(sd_global,"ERROR: Please call SD_init() before using SD_config()");
+ simgrid::config::set_as_string(key, value);
+}
+
+/**
+ * @brief Creates the environment
+ *
+ * The environment (i.e. the @ref SD_host_api "hosts" and the @ref SD_link_api "links") is created with
+ * the data stored in the given XML platform file.
+ *
+ * @param platform_file name of an XML file describing the environment to create
+ * @see SD_host_api, SD_link_api
+ *
+ * The XML file follows this DTD:
+ *
+ * @include simgrid.dtd
+ *
+ * Here is a small example of such a platform:
+ *
+ * @include small_platform.xml
+ */
+void SD_create_environment(const char *platform_file)
+{
+ simgrid::s4u::Engine::get_instance()->load_platform(platform_file);
+
+ XBT_DEBUG("Host number: %zu, link number: %d", sg_host_count(), sg_link_count());
+#if SIMGRID_HAVE_JEDULE
+ jedule_sd_init();
+#endif
+ XBT_VERB("Starting simulation...");
+ surf_presolve(); /* Takes traces into account */
+}
+
+/**
+ * @brief Launches the simulation.
+ *
+ * The function will execute the @ref SD_RUNNABLE runnable tasks.
+ * If @a how_long is positive, then the simulation will be stopped either when time reaches @a how_long or when a watch
+ * point is reached.
+ * A non-positive value for @a how_long means no time limit, in which case the simulation will be stopped either when a
+ * watch point is reached or when no more task can be executed.
+ * Then you can call SD_simulate() again.
+ *
+ * @param how_long maximum duration of the simulation (a negative value means no time limit)
+ * @return a dynar of @ref SD_task_t whose state has changed.
+ * @see SD_task_schedule(), SD_task_watch()
+ */
+void SD_simulate(double how_long)
+{
+ simgrid::sd::simulate(how_long);
+}
+
+void SD_simulate_with_update(double how_long, xbt_dynar_t changed_tasks_dynar)
+{
+ std::set<SD_task_t> *changed_tasks = simgrid::sd::simulate(how_long);
+ for (auto const& task : *changed_tasks)
+ xbt_dynar_push(changed_tasks_dynar, &task);