96 lines
2.0 KiB
C
96 lines
2.0 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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* thread safe
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*/
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#ifndef _NGX_SLAB_H_INCLUDED_
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#define _NGX_SLAB_H_INCLUDED_
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#include <stdint.h>
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#include "hmutex.h"
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#define ngx_memzero(buf, n) (void) memset(buf, 0, n)
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#define ngx_memset(buf, c, n) (void) memset(buf, c, n)
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#define ngx_shmtx_t hmutex_t
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#define ngx_shmtx_lock hmutex_lock
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#define ngx_shmtx_unlock hmutex_unlock
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typedef uint8_t u_char;
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typedef intptr_t ngx_int_t;
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typedef uintptr_t ngx_uint_t;
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typedef intptr_t ngx_flag_t;
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#define ngx_align_ptr(p, a) \
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(u_char *) (((uintptr_t) (p) + ((uintptr_t) a - 1)) & ~((uintptr_t) a - 1))
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typedef struct ngx_slab_page_s ngx_slab_page_t;
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struct ngx_slab_page_s {
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uintptr_t slab;
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ngx_slab_page_t *next;
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uintptr_t prev;
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};
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typedef struct {
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ngx_uint_t total;
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ngx_uint_t used;
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ngx_uint_t reqs;
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ngx_uint_t fails;
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} ngx_slab_stat_t;
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typedef struct {
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size_t min_size;
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size_t min_shift;
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ngx_slab_page_t *pages;
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ngx_slab_page_t *last;
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ngx_slab_page_t free;
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ngx_slab_stat_t *stats;
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ngx_uint_t pfree;
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u_char *start;
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u_char *end;
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ngx_shmtx_t mutex;
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u_char *log_ctx;
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u_char zero;
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unsigned log_nomem:1;
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void *data;
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void *addr;
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} ngx_slab_pool_t;
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void ngx_slab_test();
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ngx_slab_pool_t *ngx_slab_sizes_init(uint32_t pool_size);
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void ngx_slab_init(ngx_slab_pool_t *pool);
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void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size);
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void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size);
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void *ngx_slab_calloc(ngx_slab_pool_t *pool, size_t size);
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void *ngx_slab_calloc_locked(ngx_slab_pool_t *pool, size_t size);
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void ngx_slab_free(ngx_slab_pool_t *pool, void *p);
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void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p);
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#endif /* _NGX_SLAB_H_INCLUDED_ */
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