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annotate src/core/ngx_slab.h @ 2720:b3b8c66bd520

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support attaching to an existent Win32 shared memory
author Igor Sysoev <igor@sysoev.ru>
date Sat, 18 Apr 2009 19:27:28 +0000
parents 2bce3f6416c6
children 5ff1ae0eada7
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_SLAB_H_INCLUDED_
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8 #define _NGX_SLAB_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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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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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
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38 u_char *log_ctx;
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39 u_char zero;
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41 void *data;
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42 } ngx_slab_pool_t;
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44
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45 void ngx_slab_init(ngx_slab_pool_t *pool);
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46 void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
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47 void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size);
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48 void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
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49 void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p);
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52 #endif /* _NGX_SLAB_H_INCLUDED_ */