/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic 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 General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DCPOMATIC_JOB_H
#define DCPOMATIC_JOB_H
-#include <string>
+#include "signaller.h"
#include <boost/thread/mutex.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/signals2.hpp>
#include <boost/thread.hpp>
+#include <string>
class Film;
/** @class Job
* @brief A parent class to represent long-running tasks which are run in their own thread.
*/
-class Job : public boost::enable_shared_from_this<Job>
+class Job : public boost::enable_shared_from_this<Job>, public Signaller, public boost::noncopyable
{
public:
- Job (boost::shared_ptr<Film>);
- virtual ~Job() {}
+ Job (boost::shared_ptr<const Film> film);
+ virtual ~Job ();
/** @return user-readable name of this job */
virtual std::string name () const = 0;
+ virtual std::string json_name () const = 0;
/** Run this job in the current thread. */
virtual void run () = 0;
-
+
void start ();
- void pause ();
+ void pause_by_user ();
+ void pause_by_priority ();
void resume ();
void cancel ();
bool finished_ok () const;
bool finished_in_error () const;
bool finished_cancelled () const;
- bool paused () const;
+ bool paused_by_user () const;
+ bool paused_by_priority () const;
std::string error_summary () const;
std::string error_details () const;
- int elapsed_time () const;
virtual std::string status () const;
+ std::string json_status () const;
+ std::string sub_name () const {
+ return _sub_name;
+ }
void set_progress_unknown ();
- void set_progress (float);
- void ascend ();
- void descend (float);
- float overall_progress () const;
+ void set_progress (float, bool force = false);
+ void sub (std::string);
+ boost::optional<float> progress () const;
+
+ boost::shared_ptr<const Film> film () const {
+ return _film;
+ }
+
+ void when_finished (boost::signals2::connection& connection, boost::function<void()> finished);
- /** Emitted by the JobManagerView from the UI thread */
+ boost::signals2::signal<void()> Progress;
+ /** Emitted from the UI thread when the job is finished */
boost::signals2::signal<void()> Finished;
protected:
/** Description of a job's state */
enum State {
- NEW, ///< the job hasn't been started yet
- RUNNING, ///< the job is running
- PAUSED, ///< the job has been paused
- FINISHED_OK, ///< the job has finished successfully
+ NEW, ///< the job hasn't been started yet
+ RUNNING, ///< the job is running
+ PAUSED_BY_USER, ///< the job has been paused
+ PAUSED_BY_PRIORITY, ///< the job has been paused
+ FINISHED_OK, ///< the job has finished successfully
FINISHED_ERROR, ///< the job has finished in error
FINISHED_CANCELLED ///< the job was cancelled
};
-
+
void set_state (State);
void set_error (std::string s, std::string d);
+ int elapsed_sub_time () const;
+ void check_for_interruption_or_pause ();
- boost::shared_ptr<Film> _film;
+ boost::shared_ptr<const Film> _film;
private:
void run_wrapper ();
+ void set_progress_common (boost::optional<float> p);
boost::thread* _thread;
/** time that this job was started */
time_t _start_time;
+ /** time that this sub-job was started */
+ time_t _sub_start_time;
+ std::string _sub_name;
- /** mutex for _stack and _progress_unknown */
+ /** mutex for _progress and _last_progress_update */
mutable boost::mutex _progress_mutex;
+ boost::optional<float> _progress;
+ boost::optional<struct timeval> _last_progress_update;
- struct Level {
- Level (float a) : allocation (a), normalised (0) {}
-
- float allocation;
- float normalised;
- };
-
- std::list<Level> _stack;
-
- /** true if this job's progress will always be unknown */
- bool _progress_unknown;
+ /** condition to signal changes to pause/resume so that we know when to wake;
+ this could be a general _state_change if it made more sense.
+ */
+ boost::condition_variable _pause_changed;
int _ran_for;
};