2 Copyright (C) 2012-2016 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/>.
22 * @brief A parent class to represent long-running tasks which are run in their own thread.
28 #include "exceptions.h"
31 #include "compose.hpp"
32 #include <dcp/exceptions.h>
33 #include <sub/exceptions.h>
34 #include <boost/thread.hpp>
35 #include <boost/filesystem.hpp>
36 #include <boost/foreach.hpp>
37 #include <boost/date_time/posix_time/posix_time.hpp>
45 using boost::shared_ptr;
46 using boost::optional;
47 using boost::function;
49 #define LOG_ERROR_NC(...) if (_film) { _film->log()->log (__VA_ARGS__, LogEntry::TYPE_ERROR); }
50 #define LOG_GENERAL(...) if (_film) { _film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL); }
52 /** @param film Associated film, or 0 */
53 Job::Job (shared_ptr<const Film> film)
68 _thread->interrupt ();
69 /* We can't use DCPOMATIC_ASSERT here as it may throw an exception */
70 if (_thread->joinable ()) {
74 /* Too late to do anything about this */
82 /** Start the job in a separate thread, returning immediately */
87 _start_time = time (0);
88 _sub_start_time = time (0);
89 _thread = new boost::thread (boost::bind (&Job::run_wrapper, this));
92 /** A wrapper for the ::run() method to catch exceptions */
100 } catch (dcp::FileError& e) {
102 string m = String::compose (_("An error occurred whilst handling the file %1."), boost::filesystem::path (e.filename()).leaf());
105 boost::filesystem::space_info const s = boost::filesystem::space (e.filename());
106 if (s.available < pow (1024, 3)) {
108 m += _("The drive that the film is stored on is low in disc space. Free some more space and try again.");
114 set_error (e.what(), m);
116 set_state (FINISHED_ERROR);
118 } catch (OpenFileError& e) {
121 String::compose (_("Could not open %1"), e.file().string()),
123 _("DCP-o-matic could not open the file %1 (%2). Perhaps it does not exist or is in an unexpected format."),
124 boost::filesystem::absolute (e.file()).string(),
130 set_state (FINISHED_ERROR);
132 } catch (boost::filesystem::filesystem_error& e) {
134 if (e.code() == boost::system::errc::no_such_file_or_directory) {
136 String::compose (_("Could not open %1"), e.path1().string ()),
138 _("DCP-o-matic could not open the file %1 (%2). Perhaps it does not exist or is in an unexpected format."),
139 boost::filesystem::absolute (e.path1()).string(),
146 string (_("It is not known what caused this error.")) + " " + REPORT_PROBLEM
151 set_state (FINISHED_ERROR);
153 } catch (boost::thread_interrupted &) {
155 set_state (FINISHED_CANCELLED);
157 } catch (sub::SubripError& e) {
159 string extra = "Error is near:\n";
160 BOOST_FOREACH (string i, e.context()) {
164 set_error (e.what (), extra);
166 set_state (FINISHED_ERROR);
168 } catch (std::bad_alloc& e) {
170 set_error (_("Out of memory"), _("There was not enough memory to do this. If you are running a 32-bit operating system try reducing the number of encoding threads in the General tab of Preferences."));
172 set_state (FINISHED_ERROR);
174 } catch (dcp::DCPReadError& e) {
176 set_error (e.message(), e.detail().get_value_or(""));
178 set_state (FINISHED_ERROR);
180 } catch (std::exception& e) {
184 string (_("It is not known what caused this error.")) + " " + REPORT_PROBLEM
188 set_state (FINISHED_ERROR);
194 string (_("It is not known what caused this error.")) + " " + REPORT_PROBLEM
198 set_state (FINISHED_ERROR);
202 /** @return true if this job is new (ie has not started running) */
206 boost::mutex::scoped_lock lm (_state_mutex);
207 return _state == NEW;
210 /** @return true if the job is running */
212 Job::running () const
214 boost::mutex::scoped_lock lm (_state_mutex);
215 return _state == RUNNING;
218 /** @return true if the job has finished (either successfully or unsuccessfully) */
220 Job::finished () const
222 boost::mutex::scoped_lock lm (_state_mutex);
223 return _state == FINISHED_OK || _state == FINISHED_ERROR || _state == FINISHED_CANCELLED;
226 /** @return true if the job has finished successfully */
228 Job::finished_ok () const
230 boost::mutex::scoped_lock lm (_state_mutex);
231 return _state == FINISHED_OK;
234 /** @return true if the job has finished unsuccessfully */
236 Job::finished_in_error () const
238 boost::mutex::scoped_lock lm (_state_mutex);
239 return _state == FINISHED_ERROR;
243 Job::finished_cancelled () const
245 boost::mutex::scoped_lock lm (_state_mutex);
246 return _state == FINISHED_CANCELLED;
250 Job::paused_by_user () const
252 boost::mutex::scoped_lock lm (_state_mutex);
253 return _state == PAUSED_BY_USER;
257 Job::paused_by_priority () const
259 boost::mutex::scoped_lock lm (_state_mutex);
260 return _state == PAUSED_BY_PRIORITY;
263 /** Set the state of this job.
264 * @param s New state.
267 Job::set_state (State s)
269 bool finished = false;
272 boost::mutex::scoped_lock lm (_state_mutex);
275 if (_state == FINISHED_OK || _state == FINISHED_ERROR || _state == FINISHED_CANCELLED) {
276 _ran_for = time(0) - _start_time;
283 emit (boost::bind (boost::ref (Finished)));
287 /** @return DCPTime (in seconds) that this sub-job has been running */
289 Job::elapsed_sub_time () const
291 if (_sub_start_time == 0) {
295 return time (0) - _sub_start_time;
298 /** Check to see if this job has been interrupted or paused */
300 Job::check_for_interruption_or_pause ()
302 boost::this_thread::interruption_point ();
304 boost::mutex::scoped_lock lm (_state_mutex);
305 while (_state == PAUSED_BY_USER || _state == PAUSED_BY_PRIORITY) {
306 emit (boost::bind (boost::ref (Progress)));
307 _pause_changed.wait (lm);
311 /** Set the progress of the current part of the job.
312 * @param p Progress (from 0 to 1)
313 * @param force Do not ignore this update, even if it hasn't been long since the last one.
316 Job::set_progress (float p, bool force)
318 check_for_interruption_or_pause ();
321 /* Check for excessively frequent progress reporting */
322 boost::mutex::scoped_lock lm (_progress_mutex);
324 gettimeofday (&now, 0);
325 if (_last_progress_update && _last_progress_update->tv_sec > 0) {
326 double const elapsed = (now.tv_sec + now.tv_usec / 1000000.0)
327 - (_last_progress_update->tv_sec + _last_progress_update->tv_usec / 1000000.0);
332 _last_progress_update = now;
335 set_progress_common (p);
339 Job::set_progress_common (optional<float> p)
342 boost::mutex::scoped_lock lm (_progress_mutex);
346 emit (boost::bind (boost::ref (Progress)));
349 /** @return fractional progress of the current sub-job, if known */
351 Job::progress () const
353 boost::mutex::scoped_lock lm (_progress_mutex);
361 boost::mutex::scoped_lock lm (_progress_mutex);
362 LOG_GENERAL ("Sub-job %1 starting", n);
366 set_progress (0, true);
367 _sub_start_time = time (0);
371 Job::error_details () const
373 boost::mutex::scoped_lock lm (_state_mutex);
374 return _error_details;
377 /** @return A summary of any error that the job has generated */
379 Job::error_summary () const
381 boost::mutex::scoped_lock lm (_state_mutex);
382 return _error_summary;
385 /** Set the current error string.
386 * @param s New error string.
387 * @param d New error detail string.
390 Job::set_error (string s, string d)
395 _film->log()->log (String::compose ("Error in job: %1 (%2)", s, d), LogEntry::TYPE_ERROR);
398 boost::mutex::scoped_lock lm (_state_mutex);
403 /** Say that this job's progress will be unknown until further notice */
405 Job::set_progress_unknown ()
407 check_for_interruption_or_pause ();
408 set_progress_common (optional<float> ());
411 /** @return Human-readable status of this job */
415 optional<float> p = progress ();
416 int const t = elapsed_sub_time ();
417 int const r = remaining_time ();
420 if (!finished () && p) {
421 int pc = lrintf (p.get() * 100);
423 /* 100% makes it sound like we've finished when we haven't */
428 snprintf (buffer, sizeof(buffer), "%d%%", pc);
431 if (t > 10 && r > 0) {
432 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
433 boost::posix_time::ptime finish = now + boost::posix_time::seconds(r);
434 char finish_string[16];
435 snprintf (finish_string, sizeof(finish_string), "%02d:%02d", int(finish.time_of_day().hours()), int(finish.time_of_day().minutes()));
437 if (now.date() != finish.date()) {
438 /// TRANSLATORS: the %1 in this string will be filled in with a day of the week
439 /// to say what day a job will finish.
440 day = String::compose (_(" on %1"), finish.date().day_of_week().as_long_string());
442 /// TRANSLATORS: "remaining; finishing at" here follows an amount of time that is remaining
443 /// on an operation; after it is an estimated wall-clock completion time.
444 s += String::compose(
445 _("; %1 remaining; finishing at %2%3"),
446 seconds_to_approximate_hms(r), finish_string, day
449 } else if (finished_ok ()) {
450 s = String::compose (_("OK (ran for %1)"), seconds_to_hms (_ran_for));
451 } else if (finished_in_error ()) {
452 s = String::compose (_("Error: %1"), error_summary ());
453 } else if (finished_cancelled ()) {
461 Job::json_status () const
463 boost::mutex::scoped_lock lm (_state_mutex);
469 return N_("running");
471 case PAUSED_BY_PRIORITY:
474 return N_("finished_ok");
476 return N_("finished_error");
477 case FINISHED_CANCELLED:
478 return N_("finished_cancelled");
484 /** @return An estimate of the remaining time for this sub-job, in seconds */
486 Job::remaining_time () const
488 if (progress().get_value_or(0) == 0) {
489 return elapsed_sub_time ();
492 return elapsed_sub_time() / progress().get() - elapsed_sub_time();
502 if (paused_by_user() || paused_by_priority()) {
506 _thread->interrupt ();
507 DCPOMATIC_ASSERT (_thread->joinable ());
514 Job::pause_by_user ()
517 set_state (PAUSED_BY_USER);
518 _pause_changed.notify_all ();
523 Job::pause_by_priority ()
526 set_state (PAUSED_BY_PRIORITY);
527 _pause_changed.notify_all ();
534 if (paused_by_user() || paused_by_priority()) {
536 _pause_changed.notify_all ();
541 Job::when_finished (boost::signals2::connection& connection, function<void()> finished)
543 boost::mutex::scoped_lock lm (_state_mutex);
544 if (_state == FINISHED_OK || _state == FINISHED_ERROR || _state == FINISHED_CANCELLED) {
547 connection = Finished.connect (finished);