File: ags_task.h

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/* GSequencer - Advanced GTK Sequencer
 * Copyright (C) 2005-2023 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_TASK_H__
#define __AGS_TASK_H__

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

G_BEGIN_DECLS

#define AGS_TYPE_TASK                (ags_task_get_type())
#define AGS_TYPE_TASK_FLAGS                (ags_task_flags_get_type())
#define AGS_TASK(obj)                (G_TYPE_CHECK_INSTANCE_CAST((obj), AGS_TYPE_TASK, AgsTask))
#define AGS_TASK_CLASS(class)        (G_TYPE_CHECK_CLASS_CAST((class), AGS_TYPE_TASK, AgsTaskClass))
#define AGS_IS_TASK(obj)             (G_TYPE_CHECK_INSTANCE_TYPE((obj), AGS_TYPE_TASK))
#define AGS_IS_TASK_CLASS(class)     (G_TYPE_CHECK_CLASS_TYPE((class), AGS_TYPE_TASK))
#define AGS_TASK_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS((obj), AGS_TYPE_TASK, AgsTaskClass))

#define AGS_TASK_GET_OBJ_MUTEX(obj) (&(((AgsTask *) obj)->obj_mutex))

typedef struct _AgsTask AgsTask;
typedef struct _AgsTaskClass AgsTaskClass;

/**
 * AgsTaskFlags:
 * @AGS_TASK_LOCKED: the task is locked
 * @AGS_TASK_CYCLIC: call task repeatedly
 * 
 * Enum values to control the behavior or indicate internal state of #AgsTask by
 * enable/disable as flags.
 */
typedef enum{
  AGS_TASK_LOCKED   = 1,
  AGS_TASK_CYCLIC   = 1 <<  1,
}AgsTaskFlags;

struct _AgsTask
{
  GObject gobject;

  guint flags;

  GRecMutex obj_mutex;

  gchar *task_name;

  GObject *task_launcher;
};

struct _AgsTaskClass
{
  GObjectClass gobject;

  void (*launch)(AgsTask *task);

  void (*failure)(AgsTask *task, GError *error);
};

GType ags_task_get_type();

gboolean ags_task_test_flags(AgsTask *task,
			     AgsTaskFlags flags);
void ags_task_set_flags(AgsTask *task,
			AgsTaskFlags flags);
void ags_task_unset_flags(AgsTask *task,
			  AgsTaskFlags flags);

void ags_task_launch(AgsTask *task);
void ags_task_failure(AgsTask *task, GError *error);

AgsTask* ags_task_new();

G_END_DECLS

#endif /*__AGS_TASK_H__*/