annotate src/http/ngx_http_cache.h @ 473:8e8f3af115b5 release-0.1.11

nginx-0.1.11-RELEASE import *) Feature: the worker_priority directive. *) Change: both tcp_nopush and tcp_nodelay directives affect the transferred response. *) Bugfix: nginx did not call initgroups(). Thanks to Andrew Sitnikov and Andrei Nigmatulin. *) Change: now the ngx_http_autoindex_module shows the file size in the bytes. *) Bugfix: the ngx_http_autoindex_module returned the 500 error if the broken symlink was in a directory. *) Bugfix: the files bigger than 4G could not be transferred using sendfile. *) Bugfix: if the backend was resolved to several backends and there was an error while the response waiting then process may got caught in an endless loop. *) Bugfix: the worker process may exit with the "unknown cycle" message when the /dev/poll method was used. *) Bugfix: "close() channel failed" errors. *) Bugfix: the autodetection of the "nobody" and "nogroup" groups. *) Bugfix: the send_lowat directive did not work on Linux. *) Bugfix: the segmentation fault occurred if there was no events section in configuration. *) Bugfix: nginx could not be built on OpenBSD. *) Bugfix: the double slashes in "://" in the URI were converted to ":/".
author Igor Sysoev <igor@sysoev.ru>
date Thu, 02 Dec 2004 18:40:46 +0000
parents 2ff194b74f1e
children ad1e9ebf93bb
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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6
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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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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 /*
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17 * The 3 bits allows the 7 uses before the cache entry allocation.
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18 * We can use maximum 7 bits, i.e up to the 127 uses.
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19 */
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20 #define NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS 3
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21
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23 typedef struct {
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24 uint32_t crc;
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25 ngx_str_t key;
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
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26 time_t accessed;
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27
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
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28 unsigned refs:20; /* 1048576 references */
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29
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30 unsigned count:NGX_HTTP_CACHE_LAZY_ALLOCATION_BITS;
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32 unsigned deleted:1;
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33 unsigned expired:1;
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34 unsigned memory:1;
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35 unsigned mmap:1;
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
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36 unsigned notify:1;
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37
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38 ngx_fd_t fd;
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39 #if (NGX_USE_HTTP_FILE_CACHE_UNIQ)
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40 ngx_file_uniq_t uniq; /* no needed with kqueue */
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41 #endif
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42 time_t last_modified;
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43 time_t updated;
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44
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45 union {
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46 off_t size;
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47 ngx_str_t value;
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48 } data;
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49 } ngx_http_cache_entry_t;
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50
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51
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52 typedef struct {
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53 time_t expires;
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54 time_t last_modified;
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55 time_t date;
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56 off_t length;
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57 size_t key_len;
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58 char key[1];
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59 } ngx_http_cache_header_t;
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61
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62 #define NGX_HTTP_CACHE_HASH 7
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63 #define NGX_HTTP_CACHE_NELTS 4
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64
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65 typedef struct {
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66 ngx_http_cache_entry_t *elts;
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67 size_t hash;
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68 size_t nelts;
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69 time_t life;
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70 time_t update;
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71 #if (NGX_THREADS)
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72 ngx_mutex_t mutex;
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73 #endif
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74 ngx_pool_t *pool;
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75 } ngx_http_cache_hash_t;
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76
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78 typedef struct {
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79 ngx_http_cache_hash_t *hash;
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80 ngx_http_cache_entry_t *cache;
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81 ngx_file_t file;
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82 ngx_array_t key;
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83 uint32_t crc;
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84 u_char md5[16];
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85 ngx_path_t *path;
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86 ngx_buf_t *buf;
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87 time_t expires;
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88 time_t last_modified;
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89 time_t date;
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90 off_t length;
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91 ssize_t header_size;
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92 size_t file_start;
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93 ngx_log_t *log;
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94
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95 /* STUB */
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96 ngx_str_t key0;
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97 } ngx_http_cache_t;
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99
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100 typedef struct {
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101 ngx_path_t path;
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102 ngx_str_t key;
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103 } ngx_http_cache_ctx_t;
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104
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105
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106 #define NGX_HTTP_CACHE_STALE 1
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107 #define NGX_HTTP_CACHE_AGED 2
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108 #define NGX_HTTP_CACHE_THE_SAME 3
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109
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110
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111 #if 0
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112
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113 ngx_http_cache_t *ngx_http_cache_get(ngx_http_cache_hash_t *cache,
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114 ngx_http_cleanup_t *cleanup,
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115 ngx_str_t *key, uint32_t *crc);
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116
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117 ngx_http_cache_t *ngx_http_cache_alloc(ngx_http_cache_hash_t *hash,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
118 ngx_http_cache_t *cache,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
119 ngx_http_cleanup_t *cleanup,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
120 ngx_str_t *key, uint32_t crc,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
121 ngx_str_t *value, ngx_log_t *log);
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
122 void ngx_http_cache_free(ngx_http_cache_t *cache,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
123 ngx_str_t *key, ngx_str_t *value, ngx_log_t *log);
203
c9da5900c79e nginx-0.0.1-2003-12-02-08:47:29 import
Igor Sysoev <igor@sysoev.ru>
parents: 202
diff changeset
124 void ngx_http_cache_lock(ngx_http_cache_hash_t *hash, ngx_http_cache_t *cache);
201
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
125 void ngx_http_cache_unlock(ngx_http_cache_hash_t *hash,
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
126 ngx_http_cache_t *cache, ngx_log_t *log);
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
127
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
128 int ngx_http_cache_get_file(ngx_http_request_t *r, ngx_http_cache_ctx_t *ctx);
190
02a715e85df1 nginx-0.0.1-2003-11-19-00:34:08 import
Igor Sysoev <igor@sysoev.ru>
parents: 176
diff changeset
129 int ngx_http_cache_open_file(ngx_http_cache_ctx_t *ctx, ngx_file_uniq_t uniq);
197
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
130 int ngx_http_cache_update_file(ngx_http_request_t *r,ngx_http_cache_ctx_t *ctx,
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
131 ngx_str_t *temp_file);
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
132
201
267ea1d98683 nginx-0.0.1-2003-11-30-23:03:18 import
Igor Sysoev <igor@sysoev.ru>
parents: 200
diff changeset
133 int ngx_http_send_cached(ngx_http_request_t *r);
200
abeaebe0a33c nginx-0.0.1-2003-11-28-20:41:47 import
Igor Sysoev <igor@sysoev.ru>
parents: 199
diff changeset
134
197
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
135
190
02a715e85df1 nginx-0.0.1-2003-11-19-00:34:08 import
Igor Sysoev <igor@sysoev.ru>
parents: 176
diff changeset
136 int ngx_garbage_collector_http_cache_handler(ngx_gc_t *gc, ngx_str_t *name,
02a715e85df1 nginx-0.0.1-2003-11-19-00:34:08 import
Igor Sysoev <igor@sysoev.ru>
parents: 176
diff changeset
137 ngx_dir_t *dir);
197
0b81c7a0b133 nginx-0.0.1-2003-11-27-10:45:22 import
Igor Sysoev <igor@sysoev.ru>
parents: 195
diff changeset
138
199
a65b630b3a66 nginx-0.0.1-2003-11-28-11:40:40 import
Igor Sysoev <igor@sysoev.ru>
parents: 197
diff changeset
139 char *ngx_http_set_cache_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
a65b630b3a66 nginx-0.0.1-2003-11-28-11:40:40 import
Igor Sysoev <igor@sysoev.ru>
parents: 197
diff changeset
140
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
141 #endif
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
142
199
a65b630b3a66 nginx-0.0.1-2003-11-28-11:40:40 import
Igor Sysoev <igor@sysoev.ru>
parents: 197
diff changeset
143
170
c42be4185301 nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
144 #endif /* _NGX_HTTP_CACHE_H_INCLUDED_ */