using boost::optional;
using dcp::Data;
-int const Encoder::_history_size = 25;
+int const Encoder::_history_size = 200;
/** @param f Film that we are encoding */
Encoder::Encoder (shared_ptr<const Film> film, shared_ptr<Writer> writer)
void
Encoder::begin ()
{
- if (!EncodeServerFinder::instance()->disabled ()) {
- weak_ptr<Encoder> wp = shared_from_this ();
- _server_found_connection = EncodeServerFinder::instance()->ServersListChanged.connect (
- boost::bind (&Encoder::call_servers_list_changed, wp)
- );
- }
+ weak_ptr<Encoder> wp = shared_from_this ();
+ _server_found_connection = EncodeServerFinder::instance()->ServersListChanged.connect (
+ boost::bind (&Encoder::call_servers_list_changed, wp)
+ );
}
/* We don't want the servers-list-changed callback trying to do things
boost::mutex::scoped_lock queue_lock (_queue_mutex);
- /* Wait until the queue has gone down a bit */
- while (_queue.size() >= threads * 2) {
- LOG_TIMING ("decoder-sleep queue=%1", _queue.size());
+ /* Wait until the queue has gone down a bit. Allow one thing in the queue even
+ when there are no threads.
+ */
+ while (_queue.size() >= (threads * 2) + 1) {
+ LOG_TIMING ("decoder-sleep queue=%1 threads=%2", _queue.size(), threads);
_full_condition.wait (queue_lock);
- LOG_TIMING ("decoder-wake queue=%1", _queue.size());
+ LOG_TIMING ("decoder-wake queue=%1 threads=%2", _queue.size(), threads);
}
_writer->rethrow ();
try
{
if (server) {
- LOG_TIMING ("start-encoder-thread thread=%1 server=%2", boost::this_thread::get_id (), server->host_name ());
+ LOG_TIMING ("start-encoder-thread thread=%1 server=%2", thread_id (), server->host_name ());
} else {
- LOG_TIMING ("start-encoder-thread thread=%1 server=localhost", boost::this_thread::get_id ());
+ LOG_TIMING ("start-encoder-thread thread=%1 server=localhost", thread_id ());
}
/* Number of seconds that we currently wait between attempts
while (true) {
- LOG_TIMING ("encoder-sleep thread=%1", boost::this_thread::get_id());
+ LOG_TIMING ("encoder-sleep thread=%1", thread_id ());
boost::mutex::scoped_lock lock (_queue_mutex);
while (_queue.empty ()) {
_empty_condition.wait (lock);
}
- LOG_TIMING ("encoder-wake thread=%1 queue=%2", boost::this_thread::get_id(), _queue.size());
+ LOG_TIMING ("encoder-wake thread=%1 queue=%2", thread_id(), _queue.size());
shared_ptr<DCPVideo> vf = _queue.front ();
- LOG_TIMING ("encoder-pop thread=%1 frame=%2 eyes=%3", boost::this_thread::get_id(), vf->index(), vf->eyes ());
- _queue.pop_front ();
- lock.unlock ();
+ /* We're about to commit to either encoding this frame or putting it back onto the queue,
+ so we must not be interrupted until one or other of these things have happened. This
+ block has thread interruption disabled.
+ */
+ {
+ boost::this_thread::disable_interruption dis;
- optional<Data> encoded;
+ LOG_TIMING ("encoder-pop thread=%1 frame=%2 eyes=%3", thread_id(), vf->index(), (int) vf->eyes ());
+ _queue.pop_front ();
- /* We need to encode this input */
- if (server) {
- try {
- encoded = vf->encode_remotely (server.get ());
+ lock.unlock ();
- if (remote_backoff > 0) {
- LOG_GENERAL ("%1 was lost, but now she is found; removing backoff", server->host_name ());
+ optional<Data> encoded;
+
+ /* We need to encode this input */
+ if (server) {
+ try {
+ encoded = vf->encode_remotely (server.get ());
+
+ if (remote_backoff > 0) {
+ LOG_GENERAL ("%1 was lost, but now she is found; removing backoff", server->host_name ());
+ }
+
+ /* This job succeeded, so remove any backoff */
+ remote_backoff = 0;
+
+ } catch (std::exception& e) {
+ if (remote_backoff < 60) {
+ /* back off more */
+ remote_backoff += 10;
+ }
+ LOG_ERROR (
+ N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"),
+ vf->index(), server->host_name(), e.what(), remote_backoff
+ );
}
- /* This job succeeded, so remove any backoff */
- remote_backoff = 0;
-
- } catch (std::exception& e) {
- if (remote_backoff < 60) {
- /* back off more */
- remote_backoff += 10;
+ } else {
+ try {
+ LOG_TIMING ("start-local-encode thread=%1 frame=%2", thread_id(), vf->index());
+ encoded = vf->encode_locally (boost::bind (&Log::dcp_log, _film->log().get(), _1, _2));
+ LOG_TIMING ("finish-local-encode thread=%1 frame=%2", thread_id(), vf->index());
+ } catch (std::exception& e) {
+ /* This is very bad, so don't cope with it, just pass it on */
+ LOG_ERROR (N_("Local encode failed (%1)"), e.what ());
+ throw;
}
- LOG_ERROR (
- N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"),
- vf->index(), server->host_name(), e.what(), remote_backoff
- );
}
- } else {
- try {
- LOG_TIMING ("start-local-encode thread=%1 frame=%2", boost::this_thread::get_id(), vf->index());
- encoded = vf->encode_locally (boost::bind (&Log::dcp_log, _film->log().get(), _1, _2));
- LOG_TIMING ("finish-local-encode thread=%1 frame=%2", boost::this_thread::get_id(), vf->index());
- } catch (std::exception& e) {
- LOG_ERROR (N_("Local encode failed (%1)"), e.what ());
- throw;
+ if (encoded) {
+ _writer->write (encoded.get(), vf->index (), vf->eyes ());
+ frame_done ();
+ } else {
+ lock.lock ();
+ LOG_GENERAL (N_("[%1] Encoder thread pushes frame %2 back onto queue after failure"), thread_id(), vf->index());
+ _queue.push_front (vf);
+ lock.unlock ();
}
}
- if (encoded) {
- _writer->write (encoded.get(), vf->index (), vf->eyes ());
- frame_done ();
- } else {
- lock.lock ();
- LOG_GENERAL (N_("[%1] Encoder thread pushes frame %2 back onto queue after failure"), boost::this_thread::get_id(), vf->index());
- _queue.push_front (vf);
- lock.unlock ();
- }
-
if (remote_backoff > 0) {
boost::this_thread::sleep (boost::posix_time::seconds (remote_backoff));
}