BLI_memblock.h

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/* SPDX-FileCopyrightText: 2008 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once

 
#include "BLI_compiler_attrs.h"
#include "BLI_sys_types.h"
 
#define BLI_MEM_BLOCK_CHUNK_SIZE (1 << 15) /* 32KiB */
 
struct BLI_memblock;
 
typedef struct BLI_memblock 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);
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)
 
typedef 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;
} BLI_memblock_iter;
 
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();

void *BLI_memblock_elem_get(BLI_memblock *mblk, int chunk, int elem) ATTR_WARN_UNUSED_RESULT
    ATTR_NONNULL();