nginx/src/core/ngx_slab.h

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/*
* Copyright (C) Igor Sysoev
*/
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#ifndef _NGX_SLAB_H_INCLUDED_
#define _NGX_SLAB_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
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typedef struct ngx_slab_page_s ngx_slab_page_t;
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struct ngx_slab_page_s {
uintptr_t slab;
ngx_slab_page_t *next;
uintptr_t prev;
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};
typedef struct {
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ngx_atomic_t lock;
size_t min_size;
size_t min_shift;
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ngx_slab_page_t *pages;
ngx_slab_page_t free;
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u_char *start;
u_char *end;
ngx_shmtx_t mutex;
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} ngx_slab_pool_t;
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void ngx_slab_init(ngx_slab_pool_t *pool);
void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size);
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void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p);
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#endif /* _NGX_SLAB_H_INCLUDED_ */