1  /* GLIB - Library of useful routines for C programming
       2   * gdataset-private.h: Internal macros for accessing dataset values
       3   * Copyright (C) 2005  Red Hat
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   *
       7   * This library is free software; you can redistribute it and/or
       8   * modify it under the terms of the GNU Lesser General Public
       9   * License as published by the Free Software Foundation; either
      10   * version 2.1 of the License, or (at your option) any later version.
      11   *
      12   * This library is distributed in the hope that it will be useful,
      13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
      15   * Lesser General Public License for more details.
      16   *
      17   * You should have received a copy of the GNU Lesser General Public
      18   * License along with this library; if not, see <http://www.gnu.org/licenses/>.
      19   */
      20  
      21  /*
      22   * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
      23   * file for a list of people on the GLib Team.  See the ChangeLog
      24   * files for a list of changes.  These files are distributed with
      25   * GLib at ftp://ftp.gtk.org/pub/gtk/. 
      26   */
      27  
      28  #ifndef __G_DATASETPRIVATE_H__
      29  #define __G_DATASETPRIVATE_H__
      30  
      31  #include <gatomic.h>
      32  
      33  G_BEGIN_DECLS
      34  
      35  /* GET_FLAGS is implemented via atomic pointer access, to allow memory
      36   * barriers to take effect without acquiring the global dataset mutex.
      37   */
      38  #define G_DATALIST_GET_FLAGS(datalist)				\
      39    ((gsize) g_atomic_pointer_get (datalist) & G_DATALIST_FLAGS_MASK)
      40  
      41  
      42  G_END_DECLS
      43  
      44  #endif /* __G_DATASETPRIVATE_H__ */