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, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Alexander Larsson <alexl@redhat.com>
  19  */
  20
  21 #ifndef __G_ASYNC_INITABLE_H__
  22 #define __G_ASYNC_INITABLE_H__
  23
  24 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
  25 #error "Only <gio/gio.h> can be included directly."
  26 #endif
  27
  28 #include <gio/giotypes.h>
  29 #include <gio/ginitable.h>
  30
  31 G_BEGIN_DECLS
  32
  33 #define G_TYPE_ASYNC_INITABLE            (g_async_initable_get_type ())
  34 #define G_ASYNC_INITABLE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_ASYNC_INITABLE, GAsyncInitable))
  35 #define G_IS_ASYNC_INITABLE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_ASYNC_INITABLE))
  36 #define G_ASYNC_INITABLE_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_ASYNC_INITABLE, GAsyncInitableIface))
  37 #define G_TYPE_IS_ASYNC_INITABLE(type)   (g_type_is_a ((type), G_TYPE_ASYNC_INITABLE))
  38
  39 /**
  40  * GAsyncInitable:
  41  *
  42  * Interface for asynchronously initializable objects.
  43  *
  44  * Since: 2.22
  45  **/
  46 typedef struct _GAsyncInitableIface GAsyncInitableIface;
  47
  48 /**
  49  * GAsyncInitableIface:
  50  * @g_iface: The parent interface.
  51  * @init_async: Starts initialization of the object.
  52  * @init_finish: Finishes initialization of the object.
  53  *
  54  * Provides an interface for asynchronous initializing object such that
  55  * initialization may fail.
  56  *
  57  * Since: 2.22
  58  **/
  59 struct _GAsyncInitableIface
  60 {
  61   GTypeInterface g_iface;
  62
  63   /* Virtual Table */
  64
  65   void     (* init_async)  (GAsyncInitable      *initable,
  66                             int                  io_priority,
  67                             GCancellable        *cancellable,
  68                             GAsyncReadyCallback  callback,
  69                             gpointer             user_data);
  70   gboolean (* init_finish) (GAsyncInitable      *initable,
  71                             GAsyncResult        *res,
  72                             GError             **error);
  73 };
  74
  75 GLIB_AVAILABLE_IN_ALL
  76 GType    g_async_initable_get_type    (void) G_GNUC_CONST;
  77
  78
  79 GLIB_AVAILABLE_IN_ALL
  80 void     g_async_initable_init_async       (GAsyncInitable       *initable,
  81                                             int                   io_priority,
  82                                             GCancellable         *cancellable,
  83                                             GAsyncReadyCallback   callback,
  84                                             gpointer              user_data);
  85 GLIB_AVAILABLE_IN_ALL
  86 gboolean g_async_initable_init_finish      (GAsyncInitable       *initable,
  87                                             GAsyncResult         *res,
  88                                             GError              **error);
  89
  90 GLIB_AVAILABLE_IN_ALL
  91 void     g_async_initable_new_async        (GType                 object_type,
  92                                             int                   io_priority,
  93                                             GCancellable         *cancellable,
  94                                             GAsyncReadyCallback   callback,
  95                                             gpointer              user_data,
  96                                             const gchar          *first_property_name,
  97                                             ...);
  98 GLIB_AVAILABLE_IN_ALL
  99 void     g_async_initable_newv_async       (GType                 object_type,
 100                                             guint                 n_parameters,
 101                                             GParameter           *parameters,
 102                                             int                   io_priority,
 103                                             GCancellable         *cancellable,
 104                                             GAsyncReadyCallback   callback,
 105                                             gpointer              user_data);
 106 GLIB_AVAILABLE_IN_ALL
 107 void     g_async_initable_new_valist_async (GType                 object_type,
 108                                             const gchar          *first_property_name,
 109                                             va_list               var_args,
 110                                             int                   io_priority,
 111                                             GCancellable         *cancellable,
 112                                             GAsyncReadyCallback   callback,
 113                                             gpointer              user_data);
 114 GLIB_AVAILABLE_IN_ALL
 115 GObject *g_async_initable_new_finish       (GAsyncInitable       *initable,
 116                                             GAsyncResult         *res,
 117                                             GError              **error);
 118
 119
 120
 121 G_END_DECLS
 122
 123
 124 #endif /* __G_ASYNC_INITABLE_H__ */