glib/gdatasetprivate.h

   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  * 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 Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  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__ */