gio/gasyncinitable.h

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2009 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  *
  20  * Author: Alexander Larsson <alexl@redhat.com>
  21  */
  22
  23 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
  24 #error "Only <gio/gio.h> can be included directly."
  25 #endif
  26
  27 #ifndef __G_ASYNC_INITABLE_H__
  28 #define __G_ASYNC_INITABLE_H__
  29
  30 #include <gio/giotypes.h>
  31 #include <gio/ginitable.h>
  32
  33 G_BEGIN_DECLS
  34
  35 #define G_TYPE_ASYNC_INITABLE            (g_async_initable_get_type ())
  36 #define G_ASYNC_INITABLE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_ASYNC_INITABLE, GAsyncInitable))
  37 #define G_IS_ASYNC_INITABLE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_ASYNC_INITABLE))
  38 #define G_ASYNC_INITABLE_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_ASYNC_INITABLE, GAsyncInitableIface))
  39 #define G_TYPE_IS_ASYNC_INITABLE(type)   (g_type_is_a ((type), G_TYPE_ASYNC_INITABLE))
  40
  41 /**
  42  * GAsyncInitable:
  43  *
  44  * Interface for asynchronously initializable objects.
  45  *
  46  * Since: 2.22
  47  **/
  48 typedef struct _GAsyncInitableIface GAsyncInitableIface;
  49
  50 /**
  51  * GAsyncInitableIface:
  52  * @g_iface: The parent interface.
  53  * @init_async: Starts initialization of the object.
  54  * @init_finish: Finishes initialization of the object.
  55  *
  56  * Provides an interface for asynchronous initializing object such that
  57  * initialization may fail.
  58  *
  59  * Since: 2.22
  60  **/
  61 struct _GAsyncInitableIface
  62 {
  63   GTypeInterface g_iface;
  64
  65   /* Virtual Table */
  66
  67   void     (* init_async)  (GAsyncInitable      *initable,
  68                             int                  io_priority,
  69                             GCancellable        *cancellable,
  70                             GAsyncReadyCallback  callback,
  71                             gpointer             user_data);
  72   gboolean (* init_finish) (GAsyncInitable      *initable,
  73                             GAsyncResult        *res,
  74                             GError             **error);
  75 };
  76
  77 GType    g_async_initable_get_type    (void) G_GNUC_CONST;
  78
  79
  80 void     g_async_initable_init_async       (GAsyncInitable       *initable,
  81                                             int                   io_priority,
  82                                             GCancellable         *cancellable,
  83                                             GAsyncReadyCallback   callback,
  84                                             gpointer              user_data);
  85 gboolean g_async_initable_init_finish      (GAsyncInitable       *initable,
  86                                             GAsyncResult         *res,
  87                                             GError              **error);
  88
  89 void     g_async_initable_new_async        (GType                 object_type,
  90                                             int                   io_priority,
  91                                             GCancellable         *cancellable,
  92                                             GAsyncReadyCallback   callback,
  93                                             gpointer              user_data,
  94                                             const gchar          *first_property_name,
  95                                             ...);
  96 void     g_async_initable_newv_async       (GType                 object_type,
  97                                             guint                 n_parameters,
  98                                             GParameter           *parameters,
  99                                             int                   io_priority,
 100                                             GCancellable         *cancellable,
 101                                             GAsyncReadyCallback   callback,
 102                                             gpointer              user_data);
 103 void     g_async_initable_new_valist_async (GType                 object_type,
 104                                             const gchar          *first_property_name,
 105                                             va_list               var_args,
 106                                             int                   io_priority,
 107                                             GCancellable         *cancellable,
 108                                             GAsyncReadyCallback   callback,
 109                                             gpointer              user_data);
 110 GObject *g_async_initable_new_finish       (GAsyncInitable       *initable,
 111                                             GAsyncResult         *res,
 112                                             GError              **error);
 113
 114
 115
 116 G_END_DECLS
 117
 118
 119 #endif /* __G_ASYNC_INITABLE_H__ */