/* GSequencer - Advanced GTK Sequencer
 * Copyright (C) 2005-2020 Joël Krähemann
 *
 * This file is part of GSequencer.
 *
 * GSequencer 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 3 of the License, or
 * (at your option) any later version.
 *
 * GSequencer 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 GSequencer.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __AGS_WORKER_THREAD_H__
#define __AGS_WORKER_THREAD_H__

#include <glib.h>
#include <glib-object.h>

#include <ags/thread/ags_thread.h>

G_BEGIN_DECLS

#define AGS_TYPE_WORKER_THREAD                (ags_worker_thread_get_type())
#define AGS_TYPE_WORKER_THREAD_STATUS_FLAGS   (ags_worker_thread_status_flags_get_type())
#define AGS_WORKER_THREAD(obj)                (G_TYPE_CHECK_INSTANCE_CAST((obj), AGS_TYPE_WORKER_THREAD, AgsWorkerThread))
#define AGS_WORKER_THREAD_CLASS(class)        (G_TYPE_CHECK_CLASS_CAST(class, AGS_TYPE_WORKER_THREAD, AgsWorkerThreadClass))
#define AGS_IS_WORKER_THREAD(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), AGS_TYPE_WORKER_THREAD))
#define AGS_IS_WORKER_THREAD_CLASS(class)     (G_TYPE_CHECK_CLASS_TYPE ((class), AGS_TYPE_WORKER_THREAD))
#define AGS_WORKER_THREAD_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS(obj, AGS_TYPE_WORKER_THREAD, AgsWorkerThreadClass))

#define AGS_WORKER_THREAD_DEFAULT_JIFFIE (AGS_THREAD_DEFAULT_MAX_PRECISION)

typedef struct _AgsWorkerThread AgsWorkerThread;
typedef struct _AgsWorkerThreadClass AgsWorkerThreadClass;

/**
 * AgsWorkerThreadStatusFlags:
 * @AGS_WORKER_THREAD_STATUS_RUNNING: the worker is running
 * @AGS_WORKER_THREAD_STATUS_RUN_WAIT: sync wait
 * @AGS_WORKER_THREAD_STATUS_RUN_DONE: sync done
 * @AGS_WORKER_THREAD_STATUS_RUN_SYNC: do sync
 *
 * Enum values to control the behavior or indicate internal state of #AgsWorkerThread by
 * enable/disable as status flags.
 */
typedef enum{
  AGS_WORKER_THREAD_STATUS_RUNNING    = 1,
  AGS_WORKER_THREAD_STATUS_RUN_WAIT   = 1 <<  1,
  AGS_WORKER_THREAD_STATUS_RUN_DONE   = 1 <<  2,
  AGS_WORKER_THREAD_STATUS_RUN_SYNC   = 1 <<  3,
}AgsWorkerThreadStatusFlags;

struct _AgsWorkerThread
{
  AgsThread thread;

  _Atomic guint status_flags;

  GMutex run_mutex;
  GCond run_cond;

  GThread *worker_thread;
};

struct _AgsWorkerThreadClass
{
  AgsThreadClass thread;

  void (*do_poll)(AgsWorkerThread *worker_thread);
};

GType ags_worker_thread_get_type();
GType ags_worker_thread_status_flags_get_type();

gboolean ags_worker_thread_test_status_flags(AgsWorkerThread *worker_thread, AgsWorkerThreadStatusFlags status_flags);
void ags_worker_thread_set_status_flags(AgsWorkerThread *worker_thread, AgsWorkerThreadStatusFlags status_flags);
void ags_worker_thread_unset_status_flags(AgsWorkerThread *worker_thread, AgsWorkerThreadStatusFlags status_flags);

void* ags_woker_thread_do_poll_loop(void *ptr);

void ags_worker_thread_do_poll(AgsWorkerThread *worker_thread);

AgsWorkerThread* ags_worker_thread_new();

G_END_DECLS

#endif /*__AGS_WORKER_THREAD_H__*/
