mirror of https://gitee.com/openkylin/glib2.0.git
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/* GLIB - Library of useful routines for C programming
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* gdataset-private.h: Internal macros for accessing dataset values
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* Copyright (C) 2005 Red Hat
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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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 2.1 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 Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __G_DATASETPRIVATE_H__
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#define __G_DATASETPRIVATE_H__
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#include <gatomic.h>
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G_BEGIN_DECLS
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/* GET_FLAGS is implemented via atomic pointer access, to allow memory
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* barriers to take effect without acquiring the global dataset mutex.
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*/
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#define G_DATALIST_GET_FLAGS(datalist) \
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((gsize) g_atomic_pointer_get (datalist) & G_DATALIST_FLAGS_MASK)
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/*< private >
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* GDataListUpdateAtomicFunc:
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* @key_id: ID of the entry to update
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* @data: (inout) (nullable) (not optional): the existing data corresponding
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* to @key_id, and return location for the new value for it
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* @destroy_notify: (inout) (nullable) (not optional): the existing destroy
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* notify function for @data, and return location for the destroy notify
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* function for the new value for it
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* @user_data: user data passed in to [func@GLib.datalist_id_update_atomic]
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*
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* Callback from [func@GLib.datalist_id_update_atomic].
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*
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* Since: 2.80
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*/
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typedef gpointer (*GDataListUpdateAtomicFunc) (GQuark key_id,
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gpointer *data,
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GDestroyNotify *destroy_notify,
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gpointer user_data);
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gpointer g_datalist_id_update_atomic (GData **datalist,
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GQuark key_id,
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GDataListUpdateAtomicFunc callback,
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gpointer user_data);
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G_END_DECLS
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#endif /* __G_DATASETPRIVATE_H__ */
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