glib/grcboxprivate.h

   1 /* grcboxprivate.h: Reference counted data
   2  *
   3  * Copyright 2018  Emmanuele Bassi
   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 2.1 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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #pragma once
  20
  21 #include "gtypes.h"
  22 #include "grcbox.h"
  23
  24 G_BEGIN_DECLS
  25
  26 typedef struct {
  27   grefcount ref_count;
  28
  29   gsize mem_size;
  30
  31 #ifndef G_DISABLE_ASSERT
  32   /* A "magic" number, used to perform additional integrity
  33    * checks on the allocated data
  34    */
  35   guint32 magic;
  36 #endif
  37 } GRcBox;
  38
  39 typedef struct {
  40   gatomicrefcount ref_count;
  41
  42   gsize mem_size;
  43
  44 #ifndef G_DISABLE_ASSERT
  45   guint32 magic;
  46 #endif
  47 } GArcBox;
  48
  49 #define G_BOX_MAGIC             0x44ae2bf0
  50
  51 /* Keep the two refcounted boxes identical in size */
  52 G_STATIC_ASSERT (sizeof (GRcBox) == sizeof (GArcBox));
  53
  54 #define G_RC_BOX_SIZE sizeof (GRcBox)
  55 #define G_ARC_BOX_SIZE sizeof (GArcBox)
  56
  57 gpointer        g_rc_box_alloc_full     (gsize    block_size,
  58                                          gboolean atomic,
  59                                          gboolean clear);
  60
  61 G_END_DECLS