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82d914d808
Rather than doing a two step first-check-the-GAsyncResult-subtype-then- check-the-tag, add a GAsyncResult-level method so that you can do them both at once, simplifying the code for "short-circuit" async return values where the vmethod never gets called. https://bugzilla.gnome.org/show_bug.cgi?id=661767
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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*/
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#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
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#error "Only <gio/gio.h> can be included directly."
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#endif
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#ifndef __G_ASYNC_RESULT_H__
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#define __G_ASYNC_RESULT_H__
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#include <gio/giotypes.h>
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G_BEGIN_DECLS
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#define G_TYPE_ASYNC_RESULT (g_async_result_get_type ())
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#define G_ASYNC_RESULT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_ASYNC_RESULT, GAsyncResult))
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#define G_IS_ASYNC_RESULT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_ASYNC_RESULT))
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#define G_ASYNC_RESULT_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_ASYNC_RESULT, GAsyncResultIface))
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/**
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* GAsyncResult:
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*
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* Holds results information for an asynchronous operation,
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* usually passed directly to a asynchronous _finish() operation.
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**/
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typedef struct _GAsyncResultIface GAsyncResultIface;
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/**
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* GAsyncResultIface:
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* @g_iface: The parent interface.
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* @get_user_data: Gets the user data passed to the callback.
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* @get_source_object: Gets the source object that issued the asynchronous operation.
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* @is_tagged: Checks if a result is tagged with a particular source.
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*
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* Interface definition for #GAsyncResult.
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**/
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struct _GAsyncResultIface
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{
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GTypeInterface g_iface;
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/* Virtual Table */
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gpointer (* get_user_data) (GAsyncResult *res);
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GObject * (* get_source_object) (GAsyncResult *res);
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gboolean (* is_tagged) (GAsyncResult *res,
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gpointer tag);
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};
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GType g_async_result_get_type (void) G_GNUC_CONST;
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gpointer g_async_result_get_user_data (GAsyncResult *res);
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GObject *g_async_result_get_source_object (GAsyncResult *res);
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GLIB_AVAILABLE_IN_2_34
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gboolean g_async_result_legacy_propagate_error (GAsyncResult *res,
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GError **error);
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GLIB_AVAILABLE_IN_2_34
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gboolean g_async_result_is_tagged (GAsyncResult *res,
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gpointer source_tag);
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G_END_DECLS
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#endif /* __G_ASYNC_RESULT_H__ */
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