72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
#ifndef __MEMORY_POOL_H__
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#define __MEMORY_POOL_H__
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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// #define MEMPOOL_PAGE_SIZE 4096
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#define MEMPOOL_PAGE_SIZE (4096*2)
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#define MEMPOOL_BLOCK_MAX_SIZE 512
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#define MEMPOOL_ALIGNMENT 8
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#define MEMPOOL_NUM_CLASSES (MEMPOOL_BLOCK_MAX_SIZE / MEMPOOL_ALIGNMENT)
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#define MEMPOOL_CACHE_PAGE 2
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typedef struct mp_page_s mp_page_t;
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typedef struct mp_bucket_s mp_bucket_t;
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typedef struct mp_pool_s mp_pool_t;
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typedef struct mp_large_s mp_large_t;
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typedef enum{
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MEMPOOL_INVALID_INPUT = -1,
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MEMPOOL_MALLOC_ERROR = -2,
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MEMPOOL_DOUBLE_FREE = -3,
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}mp_err_t;
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struct mp_page_s{
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mp_bucket_t *owner;
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mp_page_t *next;
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mp_page_t *prev;
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void *free_list;
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uint16_t free_count;
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uint16_t capacity;
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uint64_t bitmap[16]; // 最多支持 512/1280 个块 (64*20)
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};
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struct mp_bucket_s{
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size_t block_size; // 桶中块大小
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uint32_t page_count; // 桶中页数
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uint32_t empty_count; // 空闲页数
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mp_page_t *empty_pages; // 完全空闲page
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mp_page_t *partial_pages; // 空闲page
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mp_page_t *full_pages; // 满page
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};
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struct mp_large_s{
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mp_large_t *next;
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mp_large_t *prev;
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};
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struct mp_pool_s{
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mp_bucket_t buckets[MEMPOOL_NUM_CLASSES];
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mp_large_t *large_list;
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};
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int mp_create(mp_pool_t *pool);
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int mp_destroy(mp_pool_t *pool);
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void *mp_alloc(mp_pool_t *pool, size_t size);
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int mp_free(mp_pool_t *pool, void *ptr);
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int mp_print(mp_pool_t *pool);
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#endif
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