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258
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_SLAB_H_INCLUDED_
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8 #define _NGX_SLAB_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 typedef struct ngx_slab_page_s ngx_slab_page_t;
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16
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17 struct ngx_slab_page_s {
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18 uintptr_t slab;
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19 ngx_slab_page_t *next;
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20 uintptr_t prev;
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21 };
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22
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23
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24 typedef struct {
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25 ngx_atomic_t lock;
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26
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27 size_t min_size;
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28 size_t min_shift;
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29
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30 ngx_slab_page_t *pages;
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31 ngx_slab_page_t free;
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32
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33 u_char *start;
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34 u_char *end;
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35
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36 ngx_shmtx_t mutex;
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37 } ngx_slab_pool_t;
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38
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39
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40 void ngx_slab_init(ngx_slab_pool_t *pool);
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41 void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
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272
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42 void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size);
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258
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43 void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
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272
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44 void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p);
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258
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45
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46
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47 #endif /* _NGX_SLAB_H_INCLUDED_ */
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