126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/*
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* Copyright (C) 2009-2011 David Robillard <d@drobilla.net>
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* Copyright (C) 2009-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2010-2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2013 John Emmas <john@creativepost.co.uk>
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* Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __ardour_butler_h__
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#define __ardour_butler_h__
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#include <atomic>
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#include <pthread.h>
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#include <glibmm/threads.h>
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#include "pbd/crossthread.h"
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#include "pbd/pool.h"
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#include "pbd/ringbuffer.h"
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#include "pbd/mpmc_queue.h"
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#include "ardour/libardour_visibility.h"
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#include "ardour/session_handle.h"
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#include "ardour/types.h"
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namespace ARDOUR
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{
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/**
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* One of the Butler's functions is to clean up (ie delete) unused CrossThreadPools.
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* When a thread with a CrossThreadPool terminates, its CTP is added to pool_trash.
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* When the Butler thread wakes up, we check this trash buffer for CTPs, and if they
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* are empty they are deleted.
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*/
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class LIBARDOUR_API Butler : public SessionHandleRef
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{
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public:
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Butler (Session& session);
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~Butler ();
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int start_thread ();
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void terminate_thread ();
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void schedule_transport_work ();
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void summon ();
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void stop ();
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void wait_until_finished ();
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bool transport_work_requested () const;
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void drop_references ();
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void map_parameters ();
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bool delegate (sigc::slot<void> const& work) {
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bool rv = _delegated_work.push_back (work);
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summon ();
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return rv;
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}
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samplecnt_t audio_capture_buffer_size () const
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{
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return _audio_capture_buffer_size;
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}
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samplecnt_t audio_playback_buffer_size () const
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{
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return _audio_playback_buffer_size;
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}
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uint32_t midi_buffer_size () const
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{
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return _midi_buffer_size;
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}
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mutable std::atomic<int> should_do_transport_work;
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private:
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struct Request {
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enum Type {
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Run,
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Pause,
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Quit
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};
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};
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static void* _thread_work (void* arg);
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void* thread_work ();
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void empty_pool_trash ();
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void process_delegated_work ();
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void config_changed (std::string);
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bool flush_tracks_to_disk_normal (std::shared_ptr<RouteList>, uint32_t& errors);
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void queue_request (Request::Type r);
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pthread_t thread;
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bool have_thread;
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Glib::Threads::Mutex request_lock;
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Glib::Threads::Cond paused;
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bool should_run;
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samplecnt_t _audio_capture_buffer_size;
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samplecnt_t _audio_playback_buffer_size;
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uint32_t _midi_buffer_size;
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PBD::RingBuffer<PBD::CrossThreadPool*> pool_trash;
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CrossThreadChannel _xthread;
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PBD::MPMCQueue<sigc::slot<void> > _delegated_work;
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};
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} // namespace ARDOUR
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#endif // __ardour_butler_h__
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