annotate src/http/ngx_http_cache.h @ 656:9d21dad0b5a1 NGINX_1_1_12

nginx 1.1.12 *) Change: a "proxy_pass" directive without URI part now uses changed URI after redirection with the "error_page" directive; Thanks to Lanshun Zhou. *) Feature: the "proxy/fastcgi/scgi/uwsgi_cache_lock", "proxy/fastcgi/scgi/uwsgi_cache_lock_timeout" directives. *) Feature: the "pcre_jit" directive. *) Feature: the "if" SSI command supports captures in regular expressions. *) Bugfix: the "if" SSI command did not work inside the "block" command. *) Bugfix: the "limit_conn_log_level" and "limit_req_log_level" directives might not work. *) Bugfix: the "limit_rate" directive did not allow to use full throughput, even if limit value was very high. *) Bugfix: the "sendfile_max_chunk" directive did not work, if the "limit_rate" directive was used. *) Bugfix: a "proxy_pass" directive without URI part always used original request URI if variables were used. *) Bugfix: a "proxy_pass" directive without URI part might use original request after redirection with the "try_files" directive; Thanks to Lanshun Zhou. *) Bugfix: in the ngx_http_scgi_module. *) Bugfix: in the ngx_http_mp4_module. *) Bugfix: nginx could not be built on Solaris; the bug had appeared in 1.1.9.
author Igor Sysoev <http://sysoev.ru>
date Mon, 26 Dec 2011 00:00:00 +0400
parents 5b73504dd4ba
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_HTTP_CACHE_H_INCLUDED_
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8 #define _NGX_HTTP_CACHE_H_INCLUDED_
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9
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_http.h>
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16 #define NGX_HTTP_CACHE_MISS 1
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17 #define NGX_HTTP_CACHE_BYPASS 2
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18 #define NGX_HTTP_CACHE_EXPIRED 3
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19 #define NGX_HTTP_CACHE_STALE 4
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20 #define NGX_HTTP_CACHE_UPDATING 5
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21 #define NGX_HTTP_CACHE_HIT 6
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22 #define NGX_HTTP_CACHE_SCARCE 7
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24 #define NGX_HTTP_CACHE_KEY_LEN 16
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27 typedef struct {
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28 ngx_uint_t status;
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29 time_t valid;
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30 } ngx_http_cache_valid_t;
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33 typedef struct {
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34 ngx_rbtree_node_t node;
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35 ngx_queue_t queue;
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36
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37 u_char key[NGX_HTTP_CACHE_KEY_LEN
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38 - sizeof(ngx_rbtree_key_t)];
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39
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40 unsigned count:20;
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41 unsigned uses:10;
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42 unsigned valid_msec:10;
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43 unsigned error:10;
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44 unsigned exists:1;
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45 unsigned updating:1;
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46 unsigned deleting:1;
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47 /* 11 unused bits */
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48
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49 ngx_file_uniq_t uniq;
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50 time_t expire;
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51 time_t valid_sec;
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52 size_t body_start;
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53 off_t fs_size;
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54 } ngx_http_file_cache_node_t;
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57 struct ngx_http_cache_s {
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58 ngx_file_t file;
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59 ngx_array_t keys;
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60 uint32_t crc32;
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61 u_char key[NGX_HTTP_CACHE_KEY_LEN];
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62
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63 ngx_file_uniq_t uniq;
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64 time_t valid_sec;
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65 time_t last_modified;
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66 time_t date;
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67
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68 size_t header_start;
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69 size_t body_start;
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70 off_t length;
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71 off_t fs_size;
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73 ngx_uint_t min_uses;
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74 ngx_uint_t error;
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75 ngx_uint_t valid_msec;
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76
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77 ngx_buf_t *buf;
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78
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79 ngx_http_file_cache_t *file_cache;
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80 ngx_http_file_cache_node_t *node;
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81
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82 ngx_msec_t lock_timeout;
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83 ngx_msec_t wait_time;
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84
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85 ngx_event_t wait_event;
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86
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87 unsigned lock:1;
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88 unsigned waiting:1;
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90 unsigned updated:1;
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91 unsigned updating:1;
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92 unsigned exists:1;
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93 unsigned temp_file:1;
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94 };
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97 typedef struct {
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98 time_t valid_sec;
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99 time_t last_modified;
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100 time_t date;
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101 uint32_t crc32;
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102 u_short valid_msec;
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103 u_short header_start;
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104 u_short body_start;
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105 } ngx_http_file_cache_header_t;
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107
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108 typedef struct {
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109 ngx_rbtree_t rbtree;
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110 ngx_rbtree_node_t sentinel;
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111 ngx_queue_t queue;
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112 ngx_atomic_t cold;
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113 ngx_atomic_t loading;
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114 off_t size;
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115 } ngx_http_file_cache_sh_t;
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116
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117
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118 struct ngx_http_file_cache_s {
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119 ngx_http_file_cache_sh_t *sh;
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120 ngx_slab_pool_t *shpool;
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121
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122 ngx_path_t *path;
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123
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124 off_t max_size;
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125 size_t bsize;
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126
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127 time_t inactive;
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128
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129 ngx_uint_t files;
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130 ngx_uint_t loader_files;
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131 ngx_msec_t last;
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132 ngx_msec_t loader_sleep;
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133 ngx_msec_t loader_threshold;
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134
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135 ngx_shm_zone_t *shm_zone;
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136 };
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138
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139 ngx_int_t ngx_http_file_cache_new(ngx_http_request_t *r);
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140 ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r);
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141 void ngx_http_file_cache_create_key(ngx_http_request_t *r);
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142 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r);
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143 void ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf);
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144 void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf);
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145 ngx_int_t ngx_http_cache_send(ngx_http_request_t *);
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146 void ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf);
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147 time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status);
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148
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149 char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
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150 void *conf);
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151 char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
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152 void *conf);
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153
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Igor Sysoev <http://sysoev.ru>
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154
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155 extern ngx_str_t ngx_http_cache_status[];
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Igor Sysoev <http://sysoev.ru>
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156
0
f0b350454894 nginx 0.1.0
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157
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158 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */