Import Upstream version 2.72.4

glib/grcboxprivate.h

@@ -0,0 +1,71 @@
+/* grcboxprivate.h: Reference counted data
+ *
+ * Copyright 2018  Emmanuele Bassi
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "gtypes.h"
+#include "grcbox.h"
+
+G_BEGIN_DECLS
+
+typedef struct {
+  grefcount ref_count;
+
+  gsize mem_size;
+  gsize private_offset;
+
+#ifndef G_DISABLE_ASSERT
+  /* A "magic" number, used to perform additional integrity
+   * checks on the allocated data
+   */
+  guint32 magic;
+#endif
+} GRcBox;
+
+typedef struct {
+  gatomicrefcount ref_count;
+
+  gsize mem_size;
+  gsize private_offset;
+
+#ifndef G_DISABLE_ASSERT
+  guint32 magic;
+#endif
+} GArcBox;
+
+#define G_BOX_MAGIC             0x44ae2bf0
+
+/* Keep the two refcounted boxes identical in size */
+G_STATIC_ASSERT (sizeof (GRcBox) == sizeof (GArcBox));
+
+/* This is the default alignment we use when allocating the
+ * refcounted memory blocks; it's similar to the alignment
+ * guaranteed by the malloc() in GNU's libc and by the GSlice
+ * allocator
+ */
+#define STRUCT_ALIGNMENT (2 * sizeof (gsize))
+
+#define G_RC_BOX_SIZE sizeof (GRcBox)
+#define G_ARC_BOX_SIZE sizeof (GArcBox)
+
+gpointer        g_rc_box_alloc_full     (gsize    block_size,
+                                         gsize    alignment,
+                                         gboolean atomic,
+                                         gboolean clear);
+
+G_END_DECLS