1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/*
Copyright (C) 2012-2020 Carl Hetherington <cth@carlh.net>
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.
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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file src/job_manager.h
* @brief A simple scheduler for jobs.
*/
#include "signaller.h"
#include <boost/thread/mutex.hpp>
#include <boost/thread.hpp>
#include <boost/signals2.hpp>
#include <boost/thread/condition.hpp>
#include <list>
class Job;
class Film;
class Playlist;
class Content;
struct threed_test7;
extern bool wait_for_jobs ();
/** @class JobManager
* @brief A simple scheduler for jobs.
*/
class JobManager : public Signaller, public boost::noncopyable
{
public:
boost::shared_ptr<Job> add (boost::shared_ptr<Job>);
boost::shared_ptr<Job> add_after (boost::shared_ptr<Job> after, boost::shared_ptr<Job> j);
std::list<boost::shared_ptr<Job> > get () const;
bool work_to_do () const;
bool errors () const;
void increase_priority (boost::shared_ptr<Job>);
void decrease_priority (boost::shared_ptr<Job>);
void pause ();
void resume ();
bool paused () const {
boost::mutex::scoped_lock lm (_mutex);
return _paused;
}
void analyse_audio (
boost::shared_ptr<const Film> film,
boost::shared_ptr<const Playlist> playlist,
bool from_zero,
boost::signals2::connection& connection,
boost::function<void()> ready
);
void analyse_subtitles (
boost::shared_ptr<const Film> film,
boost::shared_ptr<Content> content,
boost::signals2::connection& connection,
boost::function<void()> ready
);
boost::signals2::signal<void (boost::weak_ptr<Job>)> JobAdded;
boost::signals2::signal<void ()> JobsReordered;
boost::signals2::signal<void (boost::optional<std::string>, boost::optional<std::string>)> ActiveJobsChanged;
static JobManager* instance ();
static void drop ();
private:
/* This function is part of the test suite */
friend bool ::wait_for_jobs ();
friend struct threed_test7;
JobManager ();
~JobManager ();
void scheduler ();
void start ();
void priority_changed ();
void job_finished ();
mutable boost::mutex _mutex;
boost::condition _empty_condition;
/** List of jobs in the order that they will be executed */
std::list<boost::shared_ptr<Job> > _jobs;
std::list<boost::signals2::connection> _connections;
bool _terminate;
bool _paused;
boost::shared_ptr<Job> _paused_job;
boost::optional<std::string> _last_active_job;
boost::thread _scheduler;
static JobManager* _instance;
};
|
