mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-09-20 17:26:14 +02:00
3a7b44c007
_gio_module_get_default() is a very convenient function for modules implementing a singleton -- it finds the default module by priority subject to override by a given environment variable name, instantiates it, and caches the instance for future calls. It also has the ability to query instances for being 'active' using a callback. It doesn't work very well for non-singletons (like file monitors). Add a new function _gio_module_get_default_type() that skips the instantiation, returning the GType instead. As a replacement for the 'active' callback, a vtable offset can be given for a virtual function to use to query if a particular backend is supported. https://bugzilla.gnome.org/show_bug.cgi?id=592211
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* GIO - GLib Input, Output and Streaming Library
|
|
*
|
|
* Copyright (C) 2006-2007 Red Hat, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General
|
|
* Public License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*
|
|
* Author: Alexander Larsson <alexl@redhat.com>
|
|
*/
|
|
|
|
#ifndef __G_IO_MODULE_PRIV_H__
|
|
#define __G_IO_MODULE_PRIV_H__
|
|
|
|
#include "giomodule.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
void _g_io_modules_ensure_extension_points_registered (void);
|
|
void _g_io_modules_ensure_loaded (void);
|
|
|
|
typedef gboolean (*GIOModuleVerifyFunc) (gpointer);
|
|
gpointer _g_io_module_get_default (const gchar *extension_point,
|
|
const gchar *envvar,
|
|
GIOModuleVerifyFunc verify_func);
|
|
|
|
GType _g_io_module_get_default_type (const gchar *extension_point,
|
|
const gchar *envvar,
|
|
guint is_supported_offset);
|
|
|
|
#ifdef G_PLATFORM_WIN32
|
|
void *_g_io_win32_get_module (void);
|
|
#endif
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __G_IO_MODULE_PRIV_H__ */
|