Mercurial > hg > nginx
annotate src/http/ngx_http_cache.h @ 6031:c8acea7c7041
Removed ngx_connection_t.lock.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Fri, 20 Mar 2015 06:43:19 +0300 |
parents | 99639bfdfa2a |
children | d698c300b9ff |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_HTTP_CACHE_H_INCLUDED_ |
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9 #define _NGX_HTTP_CACHE_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 #include <ngx_http.h> |
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16 |
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18 #define NGX_HTTP_CACHE_BYPASS 2 |
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19 #define NGX_HTTP_CACHE_EXPIRED 3 |
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20 #define NGX_HTTP_CACHE_STALE 4 |
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21 #define NGX_HTTP_CACHE_UPDATING 5 |
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22 #define NGX_HTTP_CACHE_REVALIDATED 6 |
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23 #define NGX_HTTP_CACHE_HIT 7 |
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24 #define NGX_HTTP_CACHE_SCARCE 8 |
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25 |
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26 #define NGX_HTTP_CACHE_KEY_LEN 16 |
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27 #define NGX_HTTP_CACHE_ETAG_LEN 42 |
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28 #define NGX_HTTP_CACHE_VARY_LEN 42 |
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29 |
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30 #define NGX_HTTP_CACHE_VERSION 3 |
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31 |
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32 |
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33 typedef struct { |
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34 ngx_uint_t status; |
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35 time_t valid; |
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36 } ngx_http_cache_valid_t; |
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37 |
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38 |
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39 typedef struct { |
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40 ngx_rbtree_node_t node; |
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41 ngx_queue_t queue; |
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42 |
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43 u_char key[NGX_HTTP_CACHE_KEY_LEN |
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44 - sizeof(ngx_rbtree_key_t)]; |
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45 |
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46 unsigned count:20; |
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47 unsigned uses:10; |
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48 unsigned valid_msec:10; |
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49 unsigned error:10; |
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50 unsigned exists:1; |
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51 unsigned updating:1; |
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52 unsigned deleting:1; |
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53 /* 11 unused bits */ |
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54 |
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55 ngx_file_uniq_t uniq; |
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56 time_t expire; |
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57 time_t valid_sec; |
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58 size_t body_start; |
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59 off_t fs_size; |
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60 ngx_msec_t lock_time; |
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61 } ngx_http_file_cache_node_t; |
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62 |
469 | 63 |
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64 struct ngx_http_cache_s { |
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65 ngx_file_t file; |
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66 ngx_array_t keys; |
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67 uint32_t crc32; |
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68 u_char key[NGX_HTTP_CACHE_KEY_LEN]; |
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69 u_char main[NGX_HTTP_CACHE_KEY_LEN]; |
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70 |
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71 ngx_file_uniq_t uniq; |
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72 time_t valid_sec; |
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73 time_t last_modified; |
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74 time_t date; |
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75 |
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76 ngx_str_t etag; |
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77 ngx_str_t vary; |
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78 u_char variant[NGX_HTTP_CACHE_KEY_LEN]; |
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79 |
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80 size_t header_start; |
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81 size_t body_start; |
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82 off_t length; |
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83 off_t fs_size; |
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84 |
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85 ngx_uint_t min_uses; |
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86 ngx_uint_t error; |
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87 ngx_uint_t valid_msec; |
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88 |
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89 ngx_buf_t *buf; |
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90 |
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91 ngx_http_file_cache_t *file_cache; |
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92 ngx_http_file_cache_node_t *node; |
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93 |
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94 ngx_msec_t lock_timeout; |
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95 ngx_msec_t lock_age; |
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96 ngx_msec_t lock_time; |
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97 ngx_msec_t wait_time; |
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98 |
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99 ngx_event_t wait_event; |
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100 |
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101 unsigned lock:1; |
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102 unsigned waiting:1; |
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103 |
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104 unsigned updated:1; |
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105 unsigned updating:1; |
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106 unsigned exists:1; |
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107 unsigned temp_file:1; |
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108 unsigned reading:1; |
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109 unsigned secondary:1; |
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110 }; |
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111 |
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112 |
473 | 113 typedef struct { |
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114 ngx_uint_t version; |
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115 time_t valid_sec; |
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116 time_t last_modified; |
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117 time_t date; |
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118 uint32_t crc32; |
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119 u_short valid_msec; |
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120 u_short header_start; |
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121 u_short body_start; |
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122 u_char etag_len; |
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123 u_char etag[NGX_HTTP_CACHE_ETAG_LEN]; |
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124 u_char vary_len; |
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125 u_char vary[NGX_HTTP_CACHE_VARY_LEN]; |
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126 u_char variant[NGX_HTTP_CACHE_KEY_LEN]; |
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127 } ngx_http_file_cache_header_t; |
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129 | |
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130 typedef struct { |
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131 ngx_rbtree_t rbtree; |
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132 ngx_rbtree_node_t sentinel; |
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133 ngx_queue_t queue; |
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134 ngx_atomic_t cold; |
3018 | 135 ngx_atomic_t loading; |
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136 off_t size; |
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137 } ngx_http_file_cache_sh_t; |
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138 |
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139 |
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140 struct ngx_http_file_cache_s { |
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141 ngx_http_file_cache_sh_t *sh; |
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142 ngx_slab_pool_t *shpool; |
469 | 143 |
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144 ngx_path_t *path; |
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145 ngx_path_t *temp_path; |
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146 |
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147 off_t max_size; |
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148 size_t bsize; |
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149 |
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150 time_t inactive; |
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151 |
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152 ngx_uint_t files; |
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153 ngx_uint_t loader_files; |
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154 ngx_msec_t last; |
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155 ngx_msec_t loader_sleep; |
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156 ngx_msec_t loader_threshold; |
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157 |
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158 ngx_shm_zone_t *shm_zone; |
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159 }; |
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160 |
197
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161 |
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162 ngx_int_t ngx_http_file_cache_new(ngx_http_request_t *r); |
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163 ngx_int_t ngx_http_file_cache_create(ngx_http_request_t *r); |
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164 void ngx_http_file_cache_create_key(ngx_http_request_t *r); |
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165 ngx_int_t ngx_http_file_cache_open(ngx_http_request_t *r); |
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166 ngx_int_t ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf); |
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167 void ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf); |
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168 void ngx_http_file_cache_update_header(ngx_http_request_t *r); |
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169 ngx_int_t ngx_http_cache_send(ngx_http_request_t *); |
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170 void ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf); |
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171 time_t ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status); |
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172 |
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173 char *ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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174 void *conf); |
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175 char *ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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176 void *conf); |
469 | 177 |
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178 |
2952 | 179 extern ngx_str_t ngx_http_cache_status[]; |
180 | |
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181 |
170
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182 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */ |