2 Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 /** @file src/job_manager.cc
22 * @brief A simple scheduler for jobs.
25 #include "job_manager.h"
28 #include "analyse_audio_job.h"
30 #include <boost/thread.hpp>
31 #include <boost/foreach.hpp>
37 using boost::shared_ptr;
38 using boost::weak_ptr;
39 using boost::function;
40 using boost::dynamic_pointer_cast;
41 using boost::optional;
43 JobManager* JobManager::_instance = 0;
45 JobManager::JobManager ()
55 _scheduler = new boost::thread (boost::bind (&JobManager::scheduler, this));
56 #ifdef DCPOMATIC_LINUX
57 pthread_setname_np (_scheduler->native_handle(), "job-scheduler");
61 JobManager::~JobManager ()
64 boost::mutex::scoped_lock lm (_mutex);
69 /* Ideally this would be a DCPOMATIC_ASSERT(_scheduler->joinable()) but we
70 can't throw exceptions from a destructor.
72 if (_scheduler->joinable ()) {
81 JobManager::add (shared_ptr<Job> j)
84 boost::mutex::scoped_lock lm (_mutex);
88 emit (boost::bind (boost::ref (JobAdded), weak_ptr<Job> (j)));
93 list<shared_ptr<Job> >
94 JobManager::get () const
96 boost::mutex::scoped_lock lm (_mutex);
101 JobManager::work_to_do () const
103 boost::mutex::scoped_lock lm (_mutex);
104 list<shared_ptr<Job> >::const_iterator i = _jobs.begin();
105 while (i != _jobs.end() && (*i)->finished()) {
109 return i != _jobs.end ();
113 JobManager::errors () const
115 boost::mutex::scoped_lock lm (_mutex);
116 for (list<shared_ptr<Job> >::const_iterator i = _jobs.begin(); i != _jobs.end(); ++i) {
117 if ((*i)->finished_in_error ()) {
126 JobManager::scheduler ()
130 optional<string> active_job;
133 boost::mutex::scoped_lock lm (_mutex);
138 BOOST_FOREACH (shared_ptr<Job> i, _jobs) {
140 if (!i->finished ()) {
141 active_job = i->json_name ();
145 /* Something is already happening */
151 /* Only start one job at once */
157 if (active_job != _last_active_job) {
158 emit (boost::bind (boost::ref (ActiveJobsChanged), _last_active_job, active_job));
159 _last_active_job = active_job;
167 JobManager::instance ()
169 if (_instance == 0) {
170 _instance = new JobManager ();
185 JobManager::analyse_audio (
186 shared_ptr<const Film> film,
187 shared_ptr<const Playlist> playlist,
189 boost::signals2::connection& connection,
190 function<void()> ready
194 boost::mutex::scoped_lock lm (_mutex);
196 BOOST_FOREACH (shared_ptr<Job> i, _jobs) {
197 shared_ptr<AnalyseAudioJob> a = dynamic_pointer_cast<AnalyseAudioJob> (i);
198 if (a && a->playlist () == playlist) {
199 i->when_finished (connection, ready);
205 shared_ptr<AnalyseAudioJob> job;
208 boost::mutex::scoped_lock lm (_mutex);
210 job.reset (new AnalyseAudioJob (film, playlist, from_zero));
211 connection = job->Finished.connect (ready);
212 _jobs.push_back (job);
215 emit (boost::bind (boost::ref (JobAdded), weak_ptr<Job> (job)));
219 JobManager::increase_priority (shared_ptr<Job> job)
221 bool changed = false;
224 boost::mutex::scoped_lock lm (_mutex);
225 list<shared_ptr<Job> >::iterator last = _jobs.end ();
226 for (list<shared_ptr<Job> >::iterator i = _jobs.begin(); i != _jobs.end(); ++i) {
227 if (*i == job && last != _jobs.end()) {
242 JobManager::priority_changed ()
245 boost::mutex::scoped_lock lm (_mutex);
248 BOOST_FOREACH (shared_ptr<Job> i, _jobs) {
252 } else if (i->paused_by_priority ()) {
258 i->pause_by_priority ();
264 emit (boost::bind (boost::ref (JobsReordered)));
268 JobManager::decrease_priority (shared_ptr<Job> job)
270 bool changed = false;
272 for (list<shared_ptr<Job> >::iterator i = _jobs.begin(); i != _jobs.end(); ++i) {
273 list<shared_ptr<Job> >::iterator next = i;
275 if (*i == job && next != _jobs.end()) {