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96 lines
2.3 KiB
C
96 lines
2.3 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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*/
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#ifndef _NGX_PALLOC_H_INCLUDED_
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#define _NGX_PALLOC_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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/*
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* NGX_MAX_ALLOC_FROM_POOL should be (ngx_pagesize - 1), i.e. 4095 on x86.
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* On Windows NT it decreases a number of locked pages in a kernel.
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*/
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#define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1)
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#define NGX_DEFAULT_POOL_SIZE (16 * 1024)
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#define NGX_POOL_ALIGNMENT 16
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#define NGX_MIN_POOL_SIZE \
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ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \
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NGX_POOL_ALIGNMENT)
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typedef void (*ngx_pool_cleanup_pt)(void *data);
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typedef struct ngx_pool_cleanup_s ngx_pool_cleanup_t;
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struct ngx_pool_cleanup_s {
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ngx_pool_cleanup_pt handler;
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void *data;
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ngx_pool_cleanup_t *next;
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};
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typedef struct ngx_pool_large_s ngx_pool_large_t;
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struct ngx_pool_large_s {
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ngx_pool_large_t *next;
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void *alloc;
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};
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typedef struct {
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u_char *last;
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u_char *end;
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ngx_pool_t *next;
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ngx_uint_t failed;
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} ngx_pool_data_t;
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struct ngx_pool_s {
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ngx_pool_data_t d;
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size_t max;
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ngx_pool_t *current;
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ngx_chain_t *chain;
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ngx_pool_large_t *large;
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ngx_pool_cleanup_t *cleanup;
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ngx_log_t *log;
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};
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typedef struct {
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ngx_fd_t fd;
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u_char *name;
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ngx_log_t *log;
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} ngx_pool_cleanup_file_t;
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void *ngx_alloc(size_t size, ngx_log_t *log);
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void *ngx_calloc(size_t size, ngx_log_t *log);
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ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log);
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void ngx_destroy_pool(ngx_pool_t *pool);
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void ngx_reset_pool(ngx_pool_t *pool);
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void *ngx_palloc(ngx_pool_t *pool, size_t size);
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void *ngx_pnalloc(ngx_pool_t *pool, size_t size);
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void *ngx_pcalloc(ngx_pool_t *pool, size_t size);
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void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment);
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ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p);
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ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size);
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void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd);
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void ngx_pool_cleanup_file(void *data);
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void ngx_pool_delete_file(void *data);
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#endif /* _NGX_PALLOC_H_INCLUDED_ */
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