/* This file is part of Ingen. Copyright 2007-2012 David Robillard <http://drobilla.net/> Ingen is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version. Ingen is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for details. You should have received a copy of the GNU Affero General Public License along with Ingen. If not, see <http://www.gnu.org/licenses/>. */ #ifndef INGEN_GUI_THREADEDLOADER_HPP #define INGEN_GUI_THREADEDLOADER_HPP #include <thread> #include <cassert> #include <list> #include <string> #include <boost/optional/optional.hpp> #include <glibmm/thread.h> #include "ingen/Interface.hpp" #include "ingen/serialisation/Parser.hpp" #include "ingen/serialisation/Serialiser.hpp" #include "raul/Semaphore.hpp" namespace Ingen { namespace GUI { /** Thread for loading graph files. * * This is a seperate thread so it can send all the loading message without * blocking everything else, so the app can respond to the incoming events * caused as a result of the graph loading, while the graph loads. * * Implemented as a slave with a list of closures (events) which processes * all events in the (mutex protected) list each time it's whipped. * * \ingroup GUI */ class ThreadedLoader { public: ThreadedLoader(App& app, SPtr<Interface> engine); ~ThreadedLoader(); void load_graph(bool merge, const Glib::ustring& document_uri, boost::optional<Raul::Path> engine_parent, boost::optional<Raul::Symbol> engine_symbol, boost::optional<Node::Properties> engine_data); void save_graph(SPtr<const Client::GraphModel> model, const std::string& filename); SPtr<Serialisation::Parser> parser(); private: void save_graph_event(SPtr<const Client::GraphModel> model, const std::string& filename); /** Returns nothing and takes no parameters (because they have all been bound) */ typedef sigc::slot<void> Closure; void run(); App& _app; Raul::Semaphore _sem; SPtr<Interface> _engine; Glib::Mutex _mutex; std::list<Closure> _events; bool _exit_flag; std::thread _thread; }; } // namespace GUI } // namespace Ingen #endif // INGEN_GUI_LOADERRTHREAD_HPP