annotate src/core/ngx_palloc.h @ 558:2da4537168f8 NGINX_0_8_31

nginx 0.8.31 *) Feature: now the "error_page" directive may redirect the 301 and 302 responses. *) Feature: the $geoip_city_continent_code, $geoip_latitude, and $geoip_longitude variables. Thanks to Arvind Sundararajan. *) Feature: now the ngx_http_image_filter_module deletes always EXIF and other application specific data if the data consume more than 5% of a JPEG file. *) Bugfix: nginx closed a connection if a cached response had an empty body. Thanks to Piotr Sikora. *) Bugfix: nginx might not be built by gcc 4.x if the -O2 or higher optimization option was used. Thanks to Maxim Dounin and Denis F. Latypoff. *) Bugfix: regular expressions in location were always tested in case-sensitive mode; the bug had appeared in 0.8.25. *) Bugfix: nginx cached a 304 response if there was the "If-None-Match" header line in a proxied request. Thanks to Tim Dettrick and David Kostal. *) Bugfix: nginx/Windows tried to delete a temporary file twice if the file should replace an already existent file.
author Igor Sysoev <http://sysoev.ru>
date Wed, 23 Dec 2009 00:00:00 +0300
parents 207ae3ff0444
children d0f7a625f27c
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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_PALLOC_H_INCLUDED_
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8 #define _NGX_PALLOC_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 /*
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16 * NGX_MAX_ALLOC_FROM_POOL should be (ngx_pagesize - 1), i.e. 4095 on x86.
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17 * On Windows NT it decreases a number of locked pages in a kernel.
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18 */
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19 #define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1)
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21 #define NGX_DEFAULT_POOL_SIZE (16 * 1024)
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23 #define NGX_POOL_ALIGNMENT 16
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24 #define NGX_MIN_POOL_SIZE \
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25 ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \
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26 NGX_POOL_ALIGNMENT)
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29 typedef void (*ngx_pool_cleanup_pt)(void *data);
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30
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31 typedef struct ngx_pool_cleanup_s ngx_pool_cleanup_t;
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32
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33 struct ngx_pool_cleanup_s {
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34 ngx_pool_cleanup_pt handler;
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35 void *data;
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36 ngx_pool_cleanup_t *next;
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37 };
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39
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40 typedef struct ngx_pool_large_s ngx_pool_large_t;
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42 struct ngx_pool_large_s {
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43 ngx_pool_large_t *next;
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44 void *alloc;
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45 };
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48 typedef struct {
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49 u_char *last;
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50 u_char *end;
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51 ngx_pool_t *next;
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52 ngx_uint_t failed;
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53 } ngx_pool_data_t;
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56 struct ngx_pool_s {
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57 ngx_pool_data_t d;
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58 size_t max;
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59 ngx_pool_t *current;
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60 ngx_chain_t *chain;
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61 ngx_pool_large_t *large;
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62 ngx_pool_cleanup_t *cleanup;
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63 ngx_log_t *log;
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64 };
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67 typedef struct {
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68 ngx_fd_t fd;
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69 u_char *name;
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70 ngx_log_t *log;
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71 } ngx_pool_cleanup_file_t;
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74 void *ngx_alloc(size_t size, ngx_log_t *log);
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75 void *ngx_calloc(size_t size, ngx_log_t *log);
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77 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log);
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78 void ngx_destroy_pool(ngx_pool_t *pool);
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79 void ngx_reset_pool(ngx_pool_t *pool);
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81 void *ngx_palloc(ngx_pool_t *pool, size_t size);
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82 void *ngx_pnalloc(ngx_pool_t *pool, size_t size);
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83 void *ngx_pcalloc(ngx_pool_t *pool, size_t size);
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84 void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment);
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85 ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p);
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88 ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size);
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89 void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd);
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90 void ngx_pool_cleanup_file(void *data);
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91 void ngx_pool_delete_file(void *data);
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94 #endif /* _NGX_PALLOC_H_INCLUDED_ */