2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/job_manager.h
21 * @brief A simple scheduler for jobs.
24 #include "signaller.h"
25 #include <boost/thread/mutex.hpp>
26 #include <boost/thread.hpp>
27 #include <boost/signals2.hpp>
34 extern void wait_for_jobs ();
37 * @brief A simple scheduler for jobs.
39 class JobManager : public Signaller, public boost::noncopyable
43 boost::shared_ptr<Job> add (boost::shared_ptr<Job>);
44 std::list<boost::shared_ptr<Job> > get () const;
45 bool work_to_do () const;
49 boost::shared_ptr<const Film> film,
50 boost::shared_ptr<const Playlist> playlist,
51 boost::signals2::connection& connection,
52 boost::function<void()> ready
55 boost::signals2::signal<void (boost::weak_ptr<Job>)> JobAdded;
56 boost::signals2::signal<void (boost::optional<std::string>, boost::optional<std::string>)> ActiveJobsChanged;
58 static JobManager* instance ();
62 /* This function is part of the test suite */
63 friend void ::wait_for_jobs ();
70 mutable boost::mutex _mutex;
71 std::list<boost::shared_ptr<Job> > _jobs;
74 boost::optional<std::string> _last_active_job;
75 boost::thread* _scheduler;
77 static JobManager* _instance;