+
+ void add_successor(AnyActivity* a)
+ {
+ // XBT_INFO("Adding %s as a successor of %s", get_name(), a->get_name());
+ successors_.push_back(a);
+ a->add_dependency_on(static_cast<AnyActivity*>(this));
+ }
+ void remove_successor() { successors_.pop_back(); }
+ AnyActivity* get_successor() { return successors_.back(); }
+ bool has_successors() { return not successors_.empty(); }
+
+ void add_dependency_on(AnyActivity* a) { dependencies_.insert({a}); }
+ void remove_dependency_on(AnyActivity* a) { dependencies_.erase(a); }
+ bool has_dependencies() { return not dependencies_.empty(); }
+ void on_activity_done()
+ {
+ while (has_successors()) {
+ AnyActivity* b = get_successor();
+ b->remove_dependency_on(static_cast<AnyActivity*>(this));
+ if (not b->has_dependencies()) {
+ // XBT_INFO("Activity is done and a successor can start");
+ b->vetoable_start();
+ }
+ remove_successor();
+ }
+ }
+
+ AnyActivity* vetoable_start()
+ {
+ set_state(State::STARTING);
+ if (has_dependencies())
+ return static_cast<AnyActivity*>(this);
+ // XBT_INFO("No veto, Activity can start");
+ set_state(State::STARTED);
+ static_cast<AnyActivity*>(this)->start();
+ return static_cast<AnyActivity*>(this);
+ }
+
+ virtual AnyActivity* wait()
+ {
+ static_cast<AnyActivity*>(this)->wait();
+ on_activity_done();
+ return static_cast<AnyActivity*>(this);
+ }
+