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/*
Copyright (C) 2000-2009 Paul Davis
This program 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,
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.
*/
#ifndef __ardour_butler_h__
#define __ardour_butler_h__
#include <pthread.h>
#include <glibmm/threads.h>
#include "pbd/crossthread.h"
#include "pbd/ringbuffer.h"
#include "pbd/pool.h"
#include "ardour/libardour_visibility.h"
#include "ardour/types.h"
#include "ardour/session_handle.h"
namespace ARDOUR {
/**
* One of the Butler's functions is to clean up (ie delete) unused CrossThreadPools.
* When a thread with a CrossThreadPool terminates, its CTP is added to pool_trash.
* When the Butler thread wakes up, we check this trash buffer for CTPs, and if they
* are empty they are deleted.
*/
class LIBARDOUR_API Butler : public SessionHandleRef
{
public:
Butler (Session& session);
~Butler();
int start_thread();
void terminate_thread();
void schedule_transport_work();
void summon();
void stop();
void wait_until_finished();
bool transport_work_requested() const;
void drop_references ();
void map_parameters ();
framecnt_t audio_diskstream_capture_buffer_size() const { return audio_dstream_capture_buffer_size; }
framecnt_t audio_diskstream_playback_buffer_size() const { return audio_dstream_playback_buffer_size; }
uint32_t midi_diskstream_buffer_size() const { return midi_dstream_buffer_size; }
bool flush_tracks_to_disk_after_locate (boost::shared_ptr<RouteList>, uint32_t& errors);
static void* _thread_work(void *arg);
void* thread_work();
struct Request {
enum Type {
Run,
Pause,
Quit
};
};
pthread_t thread;
bool have_thread;
Glib::Threads::Mutex request_lock;
Glib::Threads::Cond paused;
bool should_run;
mutable gint should_do_transport_work;
framecnt_t audio_dstream_capture_buffer_size;
framecnt_t audio_dstream_playback_buffer_size;
uint32_t midi_dstream_buffer_size;
RingBuffer<CrossThreadPool*> pool_trash;
private:
void empty_pool_trash ();
void config_changed (std::string);
bool flush_tracks_to_disk_normal (boost::shared_ptr<RouteList>, uint32_t& errors);
/**
* Add request to butler thread request queue
*/
void queue_request (Request::Type r);
CrossThreadChannel _xthread;
};
} // namespace ARDOUR
#endif // __ardour_butler_h__
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