+XBT_PUBLIC_CLASS AttachContext : public Context {
+public:
+
+ AttachContext(std::function<void()> code,
+ void_pfn_smxprocess_t cleanup_func,
+ smx_process_t process)
+ : Context(std::move(code), cleanup_func, process)
+ {}
+
+ ~AttachContext() override;
+
+ /** Called by the context when it is ready to give control
+ * to the maestro.
+ */
+ virtual void attach_start() = 0;
+
+ /** Called by the context when it has finished its job */
+ virtual void attach_stop() = 0;
+};
+
+XBT_PUBLIC(void) set_maestro(std::function<void()> code);
+XBT_PUBLIC(void) create_maestro(std::function<void()> code);
+
+// What's executed as SIMIX actor code:
+typedef std::function<void()> ActorCode;
+
+// Create ActorCode based on argv:
+typedef std::function<ActorCode(simgrid::xbt::args args)> ActorCodeFactory;
+
+XBT_PUBLIC(void) registerFunction(const char* name, ActorCodeFactory factory);
+
+}
+}
+
+/*
+ * Type of function that creates a process.
+ * The function must accept the following parameters:
+ * void* process: the process created will be stored there
+ * const char *name: a name for the object. It is for user-level information and can be NULL
+ * xbt_main_func_t code: is a function describing the behavior of the process
+ * void *data: data a pointer to any data one may want to attach to the new object.
+ * sg_host_t host: the location where the new process is executed
+ * int argc, char **argv: parameters passed to code
+ * xbt_dict_t pros: properties
+ */
+typedef smx_process_t (*smx_creation_func_t) (
+ /* name */ const char*,
+ std::function<void()> code,
+ /* userdata */ void*,
+ /* hostname */ const char*,
+ /* kill_time */ double,
+ /* props */ xbt_dict_t,
+ /* auto_restart */ int,
+ /* parent_process */ smx_process_t);
+
+extern "C"
+XBT_PUBLIC(void) SIMIX_function_register_process_create(smx_creation_func_t function);
+
+XBT_PUBLIC(smx_process_t) simcall_process_create(const char *name,
+ std::function<void()> code,
+ void *data,
+ const char *hostname,
+ double kill_time,
+ xbt_dict_t properties,
+ int auto_restart);
+
+XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, std::packaged_task<void()> callback);
+
+template<class F> inline
+XBT_PUBLIC(smx_timer_t) SIMIX_timer_set(double date, F callback)
+{
+ return SIMIX_timer_set(date, std::packaged_task<void()>(std::move(callback)));