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