glib/gquark.h

   1 /* GLIB - Library of useful routines for C programming
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*
  19  * Modified by the GLib Team and others 1997-2000.  See the AUTHORS
  20  * file for a list of people on the GLib Team.  See the ChangeLog
  21  * files for a list of changes.  These files are distributed with
  22  * GLib at ftp://ftp.gtk.org/pub/gtk/.
  23  */
  24
  25 #ifndef __G_QUARK_H__
  26 #define __G_QUARK_H__
  27
  28 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  29 #error "Only <glib.h> can be included directly."
  30 #endif
  31
  32 #include <glib/gtypes.h>
  33
  34 G_BEGIN_DECLS
  35
  36 typedef guint32 GQuark;
  37
  38 /* Quarks (string<->id association)
  39  */
  40 GLIB_AVAILABLE_IN_ALL
  41 GQuark                g_quark_try_string         (const gchar *string);
  42 GLIB_AVAILABLE_IN_ALL
  43 GQuark                g_quark_from_static_string (const gchar *string);
  44 GLIB_AVAILABLE_IN_ALL
  45 GQuark                g_quark_from_string        (const gchar *string);
  46 GLIB_AVAILABLE_IN_ALL
  47 const gchar *         g_quark_to_string          (GQuark       quark) G_GNUC_CONST;
  48
  49 #define G_DEFINE_QUARK(QN, q_n)                                         \
  50 GQuark                                                                  \
  51 q_n##_quark (void)                                                      \
  52 {                                                                       \
  53   static GQuark q;                                                      \
  54                                                                         \
  55   if G_UNLIKELY (q == 0)                                                \
  56     q = g_quark_from_static_string (#QN);                               \
  57                                                                         \
  58   return q;                                                             \
  59 }
  60
  61 GLIB_AVAILABLE_IN_ALL
  62 const gchar *         g_intern_string            (const gchar *string);
  63 GLIB_AVAILABLE_IN_ALL
  64 const gchar *         g_intern_static_string     (const gchar *string);
  65
  66 G_END_DECLS
  67
  68 #endif /* __G_QUARK_H__ */