Add Chromium-only Blender WebEngine parity work

blender-5.2.0/source/blender/blenlib/BLI_memblock.h

@@ -0,0 +1,55 @@
+/* SPDX-FileCopyrightText: 2008 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+/** \file
+ * \ingroup bli
+ */
+
+#include "BLI_compiler_attrs.h"
+#include "BLI_sys_types.h"
+
+namespace blender {
+
+#define BLI_MEM_BLOCK_CHUNK_SIZE (1 << 15) /* 32KiB */
+
+struct BLI_memblock;
+
+struct BLI_memblock;
+typedef void (*MemblockValFreeFP)(void *val);
+
+BLI_memblock *BLI_memblock_create_ex(uint elem_size, uint chunk_size) ATTR_WARN_UNUSED_RESULT;
+void *BLI_memblock_alloc(BLI_memblock *mblk) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL(1);
+/**
+ * Reset elem count to 0 but keep as much memory allocated needed
+ * for at least the previous elem count.
+ */
+void BLI_memblock_clear(BLI_memblock *mblk, MemblockValFreeFP free_callback) ATTR_NONNULL(1);
+void BLI_memblock_destroy(BLI_memblock *mblk, MemblockValFreeFP free_callback) ATTR_NONNULL(1);
+
+#define BLI_memblock_create(elem_size) BLI_memblock_create_ex(elem_size, BLI_MEM_BLOCK_CHUNK_SIZE)
+
+struct BLI_memblock_iter {
+  void **chunk_list;
+  int cur_index;
+  int end_index;
+  int chunk_max_ofs;
+  int chunk_idx;
+  int elem_size;
+  int elem_ofs;
+};
+
+void BLI_memblock_iternew(BLI_memblock *mblk, BLI_memblock_iter *iter) ATTR_NONNULL();
+void *BLI_memblock_iterstep(BLI_memblock_iter *iter) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
+
+/**
+ * Direct access. elem is element index inside the chosen chunk.
+ * Double usage: You can set chunk to 0 and set the absolute elem index.
+ * The correct chunk will be retrieve.
+ */
+void *BLI_memblock_elem_get(BLI_memblock *mblk, int chunk, int elem) ATTR_WARN_UNUSED_RESULT
+    ATTR_NONNULL();
+
+}  // namespace blender