Signal when streams change and rebuild player pieces when it happens.

[dcpomatic.git] / src / lib / job_manager.cc

diff --git a/src/lib/job_manager.cc b/src/lib/job_manager.cc
index 545fd956c11548bdc409525c93d8bce5454b0fe3..e3b6e257b4f4a9bb05c7b9e3e2815de9570d5d4a 100644 (file)
--- a/src/lib/job_manager.cc
+++ b/src/lib/job_manager.cc
@@ -1,19 +1,20 @@
 /*
-    Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2018 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/>.
 
 */
 
@@ -52,6 +53,9 @@ void
 JobManager::start ()
 {
        _scheduler = new boost::thread (boost::bind (&JobManager::scheduler, this));
+#ifdef DCPOMATIC_LINUX
+       pthread_setname_np (_scheduler->native_handle(), "job-scheduler");
+#endif
 }
 
 JobManager::~JobManager ()
@@ -62,7 +66,12 @@ JobManager::~JobManager ()
        }
 
        if (_scheduler) {
-               _scheduler->join ();
+               /* Ideally this would be a DCPOMATIC_ASSERT(_scheduler->joinable()) but we
+                  can't throw exceptions from a destructor.
+               */
+               if (_scheduler->joinable ()) {
+                       _scheduler->join ();
+               }
        }
 
        delete _scheduler;
@@ -176,6 +185,7 @@ void
 JobManager::analyse_audio (
        shared_ptr<const Film> film,
        shared_ptr<const Playlist> playlist,
+       bool from_zero,
        boost::signals2::connection& connection,
        function<void()> ready
        )
@@ -197,10 +207,79 @@ JobManager::analyse_audio (
        {
                boost::mutex::scoped_lock lm (_mutex);
 
-               job.reset (new AnalyseAudioJob (film, playlist));
+               job.reset (new AnalyseAudioJob (film, playlist, from_zero));
                connection = job->Finished.connect (ready);
                _jobs.push_back (job);
        }
 
        emit (boost::bind (boost::ref (JobAdded), weak_ptr<Job> (job)));
 }
+
+void
+JobManager::increase_priority (shared_ptr<Job> job)
+{
+       bool changed = false;
+
+       {
+               boost::mutex::scoped_lock lm (_mutex);
+               list<shared_ptr<Job> >::iterator last = _jobs.end ();
+               for (list<shared_ptr<Job> >::iterator i = _jobs.begin(); i != _jobs.end(); ++i) {
+                       if (*i == job && last != _jobs.end()) {
+                               swap (*i, *last);
+                               changed = true;
+                               break;
+                       }
+                       last = i;
+               }
+       }
+
+       if (changed) {
+               priority_changed ();
+       }
+}
+
+void
+JobManager::priority_changed ()
+{
+       {
+               boost::mutex::scoped_lock lm (_mutex);
+
+               bool first = true;
+               BOOST_FOREACH (shared_ptr<Job> i, _jobs) {
+                       if (first) {
+                               if (i->is_new ()) {
+                                       i->start ();
+                               } else if (i->paused_by_priority ()) {
+                                       i->resume ();
+                               }
+                               first = false;
+                       } else {
+                               if (i->running ()) {
+                                       i->pause_by_priority ();
+                               }
+                       }
+               }
+       }
+
+       emit (boost::bind (boost::ref (JobsReordered)));
+}
+
+void
+JobManager::decrease_priority (shared_ptr<Job> job)
+{
+       bool changed = false;
+
+       for (list<shared_ptr<Job> >::iterator i = _jobs.begin(); i != _jobs.end(); ++i) {
+               list<shared_ptr<Job> >::iterator next = i;
+               ++next;
+               if (*i == job && next != _jobs.end()) {
+                       swap (*i, *next);
+                       changed = true;
+                       break;
+               }
+       }
+
+       if (changed) {
+               priority_changed ();
+       }
+}